From christian.1.schmidt@nsn.com Mon Sep 7 04:43:28 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 4E0353A69B4 for ; Mon, 7 Sep 2009 04:43:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4 X-Spam-Level: X-Spam-Status: No, score=-4 tagged_above=-999 required=5 tests=[AWL=2.599, BAYES_00=-2.599, RCVD_IN_DNSWL_MED=-4] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LAKSExKLG1Gw for ; Mon, 7 Sep 2009 04:43:27 -0700 (PDT) Received: from demumfd001.nsn-inter.net (demumfd001.nsn-inter.net [217.115.75.233]) by core3.amsl.com (Postfix) with ESMTP id DAB7E3A696A for ; Mon, 7 Sep 2009 04:43:26 -0700 (PDT) Received: from demuprx016.emea.nsn-intra.net ([10.150.129.55]) by demumfd001.nsn-inter.net (8.12.11.20060308/8.12.11) with ESMTP id n87BhnVi018692 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Mon, 7 Sep 2009 13:43:49 +0200 Received: from demuexc023.nsn-intra.net (demuexc023.nsn-intra.net [10.150.128.36]) by demuprx016.emea.nsn-intra.net (8.12.11.20060308/8.12.11) with ESMTP id n87Bhn15030884; Mon, 7 Sep 2009 13:43:49 +0200 Received: from DEMUEXC013.nsn-intra.net ([10.150.128.24]) by demuexc023.nsn-intra.net with Microsoft SMTPSVC(6.0.3790.3959); Mon, 7 Sep 2009 13:43:49 +0200 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Date: Mon, 7 Sep 2009 13:43:47 +0200 Message-ID: In-Reply-To: <37BD2B3C-3835-4697-BA5C-E7BA6644C96C@americafree.tv> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: BOF at IETF76 Hiroschima Thread-Index: AcohQJmZEVNjF3PhSfe7bHlmFjZdYQOb4NPw References: <200908181651196872784@chinamobile.com><"B846208195B11F4EA16E16BE9DC8A9CC018E35D5"@DEMUEXC013.nsn-intra.net><8b2769930908180733q275636capb2919ae642f82aa6@mail.gmail.com><"200908191221165003989"@chinamobile.com><5D84FDD8D5DC8646B9F73CF1EFD1BFA4A681F9@CNBEEXC007.nsn-intra.net><200908191616502038210@chinamobile.com><5D84FDD8D5DC8646B9F73CF1EFD1BFA4A6845D@CNBEEXC007.nsn-intra.net><452C09DD-C9B9-41DE-A2BD-9064EFDA98A2@americafr <37BD2B3C-3835-4697-BA5C-E7BA6644C96C@americafree.tv> From: "Schmidt, Christian 1. (NSN - DE/Munich)" To: "zhangyunfei" X-OriginalArrivalTime: 07 Sep 2009 11:43:49.0727 (UTC) FILETIME=[7763F6F0:01CA2FB0] Cc: ppsp@ietf.org Subject: [ppsp] BOF at IETF76 Hiroschima X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Sep 2009 11:43:28 -0000 Hi Related to the planning for the next IETF, you shlould be aware of 2009-09-07 (Monday): Cutoff date for BOF proposal requests to Area Directors at 17:00 PDT (24:00 UTC/GMT). To request a BOF, please see instructions on Requesting a BOF.=20 Regards Christian Schmidt From zongning@huawei.com Mon Sep 7 06:51:15 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id E903628C15F for ; Mon, 7 Sep 2009 06:51:15 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -98.636 X-Spam-Level: X-Spam-Status: No, score=-98.636 tagged_above=-999 required=5 tests=[BAYES_20=-0.74, FH_RELAY_NODNS=1.451, HELO_MISMATCH_COM=0.553, RDNS_NONE=0.1, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9G2oq44vVxAd for ; Mon, 7 Sep 2009 06:51:15 -0700 (PDT) Received: from szxga04-in.huawei.com (unknown [119.145.14.67]) by core3.amsl.com (Postfix) with ESMTP id CC48A28C15E for ; Mon, 7 Sep 2009 06:51:14 -0700 (PDT) Received: from huawei.com (szxga04-in [172.24.2.12]) by szxga04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPL00C8JT5WO7@szxga04-in.huawei.com> for ppsp@ietf.org; Mon, 07 Sep 2009 21:51:32 +0800 (CST) Received: from huawei.com ([172.24.1.3]) by szxga04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPL002F7T5WJZ@szxga04-in.huawei.com> for ppsp@ietf.org; Mon, 07 Sep 2009 21:51:32 +0800 (CST) Received: from z-20684ca876cc4 ([200.5.112.178]) by szxml01-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPL000MNT5RID@szxml01-in.huawei.com>; Mon, 07 Sep 2009 21:51:32 +0800 (CST) Date: Mon, 07 Sep 2009 10:51:33 -0300 From: Ning Zong To: "Schmidt, Christian 1. (NSN - DE/" , zhangyunfei Message-id: <0KPL000MPT5TID@szxml01-in.huawei.com> MIME-version: 1.0 X-Mailer: Foxmail 5.0 [en] Content-type: text/plain; charset=gb2312 Content-transfer-encoding: 7BIT Cc: "ppsp@ietf.org" Subject: Re: [ppsp] BOF at IETF76 Hiroschima X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Sep 2009 13:51:16 -0000 Hi, Schmidt, Thank you for reminding. A PPSP BoF proposal has been sent to ADs. BR, Ning Zong From zhangyunfei@chinamobile.com Mon Sep 7 18:35:24 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 10A793A6814 for ; Mon, 7 Sep 2009 18:35:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -96.99 X-Spam-Level: X-Spam-Status: No, score=-96.99 tagged_above=-999 required=5 tests=[AWL=1.625, BAYES_00=-2.599, MISSING_SUBJECT=1.762, RELAY_IS_221=2.222, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5Vfht-lr29NS for ; Mon, 7 Sep 2009 18:35:23 -0700 (PDT) Received: from cmccmta.chinamobile.com (cmccmta.chinamobile.com [221.130.253.133]) by core3.amsl.com (Postfix) with ESMTP id D33113A67ED for ; Mon, 7 Sep 2009 18:35:22 -0700 (PDT) Received: from LENOVO-917FFE55 ([10.1.4.30]) by mail.chinamobile.com (Lotus Domino Release 6.5.5FP1) with SMTP id 2009090809354278-2389 ; Tue, 8 Sep 2009 09:35:42 +0800 Date: Tue, 8 Sep 2009 09:35:43 +0800 From: "zhangyunfei" To: "Schmidt, Christian 1. (NSN - DE/" References: <200908181651196872784@chinamobile.com><"B846208195B11F4EA16E16B E9DC8A9CC018E35D5"@DEMUEXC013.nsn-intra.net><8b2769930908180733q275636capb2 919ae642f82aa6@mail.gmail.com><"200908191221165003989"@chinamobile.com><5D8 4FDD8D5DC8646B9F73CF1EFD1BFA4A681F9@CNBEEXC007.nsn-intra.net><200908191616502038210 @chinamobile.com><5D84FDD8D5DC8646B9F73CF1EFD1BFA4A6845D@CNBEEXC007.nsn-int ra.net><452C09DD-C9B9-41DE-A2BD-9064EFDA98A2@americafr< X-MIMETrack: Itemize by SMTP Server on jtgsml01/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2009-09-08 09:35:42, Serialize by Router on cmccmta/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2009-09-08 09:35:52, Serialize complete at 2009-09-08 09:35:52 Message-ID: Cc: "ppsp@ietf.org" Subject: [ppsp] (no subject) X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Sep 2009 01:35:24 -0000 OFA662D389.17DF7C94- ON48257618.000B3500@china.mobile> <37BD2B3C-3835-4697-BA5C-E7BA6644C96C@americafree.tv> Subject: Re: BOF at IETF76 Hiroschima Message-ID: <200909080935431714191@chinamobile.com> X-mailer: Foxmail 6, 2, 103, 20 [cn] Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="=====003_Dragon838562668757_=====" This is a multi-part message in MIME format. --=====003_Dragon838562668757_===== Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 VGhhbmtzIGZvciBDaHJpc3RpYW4ncyByZW1pbmRpbmcuV2UgaGF2ZSBzZW50IHRoZSBCT0YgcmVx dWVzdCB0byBMYXJzIGZvciB0aGUgZGVjaXNpb24uDQoNCiAgICAgICAgICAgICAgIFl1bmZlaQ0K DQoNCg0KDQp6aGFuZ3l1bmZlaQ0KMjAwOS0wOS0wOA0KDQoNCg0Kt6K8/sjLo7ogU2NobWlkdCwg Q2hyaXN0aWFuIDEuIChOU04gLSBERS9NdW5pY2gpDQq3osvNyrG85KO6IDIwMDktMDktMDcgMTk6 NDM6NTMNCsrVvP7Iy6O6IHpoYW5neXVuZmVpDQqzrcvNo7ogcHBzcEBpZXRmLm9yZw0K1vfM4qO6 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--=====003_Dragon838562668757_=====-- From zhangyunfei@chinamobile.com Wed Sep 9 23:23:24 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 69D063A688D for ; Wed, 9 Sep 2009 23:23:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -96.756 X-Spam-Level: X-Spam-Status: No, score=-96.756 tagged_above=-999 required=5 tests=[AWL=1.267, BAYES_00=-2.599, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, MIME_BASE64_TEXT=1.753, RELAY_IS_221=2.222, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fAJrZObNzYFJ for ; Wed, 9 Sep 2009 23:23:23 -0700 (PDT) Received: from cmccmta.chinamobile.com (cmccmta.chinamobile.com [221.130.253.133]) by core3.amsl.com (Postfix) with ESMTP id 2FB2C3A6837 for ; Wed, 9 Sep 2009 23:23:22 -0700 (PDT) Received: from LENOVO-917FFE55 ([10.2.0.27]) by mail.chinamobile.com (Lotus Domino Release 6.5.5FP1) with SMTP id 2009091014235023-9961 ; Thu, 10 Sep 2009 14:23:50 +0800 Date: Thu, 10 Sep 2009 14:23:49 +0800 From: "zhangyunfei" To: "ppsp@ietf.org" Message-ID: <200909101423493286131@chinamobile.com> X-mailer: Foxmail 6, 2, 103, 20 [cn] Mime-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on jtgsml01/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2009-09-10 14:23:50, Serialize by Router on cmccmta/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2009-09-10 14:23:57 Content-Type: multipart/alternative; boundary="=====003_Dragon431383530318_=====" Subject: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 06:23:24 -0000 --=====003_Dragon431383530318_===== 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Apr=20 2010

Working=20 Group Last Call for problem statement

Jun=20 2010

Submit=20 problem statement to IESG as Informational=20 document

Aug=20 2010

Working=20 Group Last Call for architecture survey

Aug=20 2010

Working=20 Group Last Call for requirements

Oct

2010

Submit=20 architecture survey to IESG as Informational=20 document

Oct=20 2010

Submit=20 requirements to IESG as Informational document

<= /TD>

Apr=20 2011

Working=20 Group Last Call for PPSP peer protocol

Apr

2011

Working=20 Group Last Call for PPSP tracker protocol

<= /TR>

Aug=20 2011

Submit=20 PPSP peer protocol to IESG as Proposed=20 Standard

Aug=20 2011

Submit=20 PPSP tracker protocol to IESG as Proposed=20 Standard

Nov=20 2011

Working=20 Group Last Call of usage document

Nov=20 2011

Working=20 Group Last Call of mobility BCP document

Jan=20 2012

Submit=20 usage document to IESG as Informational=20 document

Jan=20 2012

Submit=20 mobility BCP document to IESG as Informational=20 document

Apr=20 2012

Dissolve=20 or re-charter

zhangyunfei
2009-09-10
 --=====003_Dragon431383530318_=====-- From christian.1.schmidt@nsn.com Thu Sep 10 01:02:34 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 8CCD53A6918 for ; Thu, 10 Sep 2009 01:02:34 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.916 X-Spam-Level: X-Spam-Status: No, score=-1.916 tagged_above=-999 required=5 tests=[AWL=0.082, BAYES_00=-2.599, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id pl7Awuaxy2ZX for ; Thu, 10 Sep 2009 01:02:24 -0700 (PDT) Received: from demumfd002.nsn-inter.net (demumfd002.nsn-inter.net [217.115.75.234]) by core3.amsl.com (Postfix) with ESMTP id 1785A3A67B4 for ; Thu, 10 Sep 2009 01:02:19 -0700 (PDT) Received: from demuprx017.emea.nsn-intra.net ([10.150.129.56]) by demumfd002.nsn-inter.net (8.12.11.20060308/8.12.11) with ESMTP id n8A82llC014378 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Thu, 10 Sep 2009 10:02:47 +0200 Received: from demuexc024.nsn-intra.net (demuexc024.nsn-intra.net [10.159.32.11]) by demuprx017.emea.nsn-intra.net (8.12.11.20060308/8.12.11) with ESMTP id n8A82apT011328; Thu, 10 Sep 2009 10:02:46 +0200 Received: from DEMUEXC013.nsn-intra.net ([10.150.128.24]) by demuexc024.nsn-intra.net with Microsoft SMTPSVC(6.0.3790.3959); Thu, 10 Sep 2009 10:02:46 +0200 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CA31ED.14BB0579" Date: Thu, 10 Sep 2009 10:02:45 +0200 Message-ID: In-Reply-To: <200909101423493286131@chinamobile.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [ppsp] ppsp charter discussion Thread-Index: Acox304NwK706EpGR1W2ggoSREwtygACRx8A References: <200909101423493286131@chinamobile.com> From: "Schmidt, Christian 1. (NSN - DE/Munich)" To: "ext zhangyunfei" , X-OriginalArrivalTime: 10 Sep 2009 08:02:46.0410 (UTC) FILETIME=[1513A6A0:01CA31ED] Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 08:02:34 -0000 This is a multi-part message in MIME format. ------_=_NextPart_001_01CA31ED.14BB0579 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Yunfei, after reading your charter proposal, a text proposal and 2 questions for clarifications. =20 Best Regards Christian Schmidt =20 =20 =20 Proposed new text for more transparency in main description: Old text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data.=20 =20 New text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for P2P streaming systems in both fixed and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, and/or other edge devices. =20 For a specific channel or streaming file, a PPSP tracker maintains lists of particiating PPSP peers. The PPSP tracker answers queries from PPSP peers for candidate PPSP peers. PPSP peers provide their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers".=20 =20 Architectural survey 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. It is good to have a description of the current P2P streaming architecture. What is missing is the relation to the PPSP work. Will it contain a proposal for the PPSP architecture? =20 Usage document 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. This sounds more like a "interop document". Was this the intention? =20 =20 =20 =20 =20 =20 =20 ________________________________ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei Sent: Thursday, September 10, 2009 8:24 AM To: ppsp@ietf.org Subject: [ppsp] ppsp charter discussion Dear all, The following is the modified version of PPSP charter(An early version was published in the IETF PPSP wiki page).Please review it and any comments and suggestions are highly appreciated. =20 BR Yunfei -------------------------------------------------------- Description of PPSP Working Group: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data.=20 =20 This WG's primary tasks are to produce: 1. A "problem statement" document describing the problems, incentives, and scope of developing the PPSP protocols, as well as common terminologies and concepts. =20 2. A "requirements" document listing the requirements on the designed PPSP protocols (e.g., general functionality and performance requirements of PPSP protocols or basic types of information that PPSP protocols should communicate to facilitate P2P streaming). 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. 4. A proposed standard defining the PPSP peer protocol. This protocol will define how PPSP peers advertise chunk availability. The protocol will also define the requests and responses of chunks among PPSP peers. =20 5. A proposed standard defining the PPSP tracker protocol. This protocol will define how PPSP peers inform and request information from PPSP trackers and how PPSP trackers reply to the requests. =20 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. =20 7. Optionally a "mobile usage document" (PPSP mobile BCP document) to evaluate PPSP with and without Mobile IP support when there are a lot of mobile peers in the system. The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups. The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy issues that PPSP should address. =20 The following topics are excluded from this WG's scope: 1. Transport mechanisms for data transmission among PPSP peers, e.g. using TCP or UDP, unicast or multicast, etc. 2. Network coding mechanisms in P2P streaming. Network coding may be used in P2P streaming, but its support is beyond the scope of current charter. =20 3. Play-out mechanisms including streaming control (e.g., pause, fast-forward, and rewind). =20 4. Algorithms that may be different in different deployments (e.g., chunk selection, local storage strategies). =20 5. Research type questions related to P2P streaming. This WG will instead forward such questions to the IRTF P2PRG or other RG as appropriate. Examples include cache management. Goals and Milestones: Apr 2010 Working Group Last Call for problem statement Jun 2010 Submit problem statement to IESG as Informational document Aug 2010 Working Group Last Call for architecture survey Aug 2010 Working Group Last Call for requirements Oct 2010 Submit architecture survey to IESG as Informational document Oct 2010 Submit requirements to IESG as Informational document Apr 2011 Working Group Last Call for PPSP peer protocol Apr 2011 Working Group Last Call for PPSP tracker protocol Aug 2011 Submit PPSP peer protocol to IESG as Proposed Standard Aug 2011 Submit PPSP tracker protocol to IESG as Proposed Standard Nov 2011 Working Group Last Call of usage document Nov 2011 Working Group Last Call of mobility BCP document Jan 2012 Submit usage document to IESG as Informational document Jan 2012 Submit mobility BCP document to IESG as Informational document Apr 2012 Dissolve or re-charter=20 =20 =20 ________________________________ zhangyunfei 2009-09-10 ------_=_NextPart_001_01CA31ED.14BB0579 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Hi Yunfei,
after reading your charter proposal, a text proposal and 2 = questions for=20 clarifications.
 
Best Regards
Christian Schmidt
 
 
 
Proposed new text for more transparency = in main=20 description:

Old text:

The Peer-to-Peer (P2P) Streaming Protocol working group = (PPSP WG)=20 is chartered to develop standard signaling protocols (called PPSP = protocols) for=20 multiple types of entities (e.g. intelligent endpoints, caches, content=20 distribution network nodes, and/or other edge devices) to participate in = P2P=20 streaming systems in both fixed and mobile=20 Internet.


PPSP protocols = include the PPSP=20 tracker protocol – a signaling protocol between “PPSP = trackers” and “PPSP=20 peers”, and the PPSP peer protocol – a signaling protocol = among “PPSP peers”. A=20 PPSP tracker maintains lists of participating PPSP peers, each for a = specific=20 channel or streaming file, and answers the queries from PPSP peers for = candidate=20 PPSP peers. PPSP peers inform their status information to PPSP trackers, = exchange their chunk availability with other PPSP peers and/or PPSP = trackers,=20 and ask other PPSP peers for wanted data.=20

 

New text:

The Peer-to-Peer (P2P) = Streaming Protocol=20 working group (PPSP WG) is chartered to develop standard signaling = protocols=20 (called PPSP protocols) for = P2P=20 streaming systems in both fixed and mobile Internet. Participating entities could be = intelligent=20 endpoints, caches, content distribution network nodes, and/or other edge = devices.

 
For a=20 specific channel or streaming file, a PPSP tracker maintains lists of=20 particiating PPSP peers. The PPSP tracker answers queries from PPSP = peers for=20 candidate PPSP peers. PPSP peers provide their status information = to PPSP=20 trackers, exchange their chunk availability with other PPSP peers and/or = PPSP=20 trackers, and ask other PPSP peers for wanted data. PPSP protocols = include the=20 PPSP tracker protocol – a signaling protocol between “PPSP = trackers” and “PPSP=20 peers”, and the PPSP peer protocol – a signaling protocol = among “PPSP=20 peers”.=20
 
Architectural survey
3. An "architectural survey" document = explaining the=20 current P2P streaming architectures, in particular tracker-based P2P = streaming,=20 and key issues in best practice.
It is good to have a description of the = current P2P=20 streaming architecture. What is missing is the relation to the PPSP = work. Will=20 it contain a proposal for the PPSP = architecture?
 
Usage document
6. A “usage document” explaining how the = protocols defined above,=20 along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can=20 inter-operate; and how they may be integrated together to produce = complete P2P=20 streaming systems.
This sounds more like a "interop document". = Was this=20 the intention?
 
 
 
 
 
 
 

From: ppsp-bounces@ietf.org=20 [mailto:ppsp-bounces@ietf.org] On Behalf Of ext=20 zhangyunfei
Sent: Thursday, September 10, 2009 8:24 = AM
To:=20 ppsp@ietf.org
Subject: [ppsp] ppsp charter=20 discussion

Dear all,

   The following is the modified version of PPSP = charter(An=20 early version was published in the IETF PPSP wiki page).Please review it = and any=20 comments and suggestions are highly appreciated.

 

          =20 BR

          &nbs= p;=20 Yunfei

--------------------------------------------------------<= /SPAN>

Description=20 of PPSP Working Group:

The=20 Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is = chartered to=20 develop standard signaling protocols (called PPSP protocols) for = multiple types=20 of entities (e.g. intelligent endpoints, caches, content distribution = network=20 nodes, and/or other edge devices) to participate in P2P streaming = systems in=20 both fixed and mobile Internet.


PPSP=20 protocols include the PPSP tracker protocol – a signaling protocol = between “PPSP=20 trackers” and “PPSP peers”, and the PPSP peer protocol = – a signaling protocol=20 among “PPSP peers”. A PPSP tracker maintains lists of = participating PPSP peers,=20 each for a specific channel or streaming file, and answers the queries = from PPSP=20 peers for candidate PPSP peers. PPSP peers inform their status = information to=20 PPSP trackers, exchange their chunk availability with other PPSP peers = and/or=20 PPSP trackers, and ask other PPSP peers for wanted data. =

 

This=20 WG's primary tasks are to produce:
1. A “problem = statement” document=20 describing the problems, incentives, and scope of developing the PPSP = protocols,=20 as well as common terminologies and concepts.

 

2. A=20 “requirements” document listing the requirements on the = designed PPSP protocols=20 (e.g., general functionality and performance requirements of PPSP = protocols or=20 basic types of information that PPSP protocols should communicate to = facilitate=20 P2P streaming).


3.=20 An "architectural survey" document explaining the current P2P streaming=20 architectures, in particular tracker-based P2P streaming, and key issues = in best=20 practice.


4.=20 A proposed standard defining the PPSP peer protocol. This protocol will = define=20 how PPSP peers advertise chunk availability. The protocol will also = define the=20 requests and responses of chunks among PPSP peers.

 

5. A=20 proposed standard defining the PPSP tracker protocol. This protocol will = define=20 how PPSP peers inform and request information from PPSP trackers and how = PPSP=20 trackers reply to the requests.

 

6. A=20 “usage document” explaining how the protocols defined above, = along with existing=20 IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and = how they=20 may be integrated together to produce complete P2P streaming=20 systems.

 

7.=20 Optionally a ”mobile usage document” (PPSP mobile BCP = document) to evaluate PPSP=20 with and without Mobile IP support when there are a lot of mobile peers = in the=20 system.


The=20 work planned for the PPSP WG is distinct from, but requires close = participation=20 with, work in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The = PPSP WG=20 assumes that it cannot modify baseline P2PSIP, ALTO, and MMUSIC = behaviors. If=20 PPSP determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP = will=20 seek to define such extensions and present to the respective working=20 groups.


The=20 design of PPSP has to consider security/privacy issues. The protocol = document=20 will contain a complete description of the security/privacy issues that = PPSP=20 should address.

 

The=20 following topics are excluded from this WG's scope:
1. Transport = mechanisms=20 for data transmission among PPSP peers, e.g. using TCP or UDP, unicast = or=20 multicast, etc.


2.=20 Network coding mechanisms in P2P streaming. Network coding may be used = in P2P=20 streaming, but its support is beyond the scope of current=20 charter.

 

3.=20 Play-out mechanisms including streaming control (e.g., pause, = fast-forward, and=20 rewind).

 

4.=20 Algorithms that may be different in different deployments (e.g., chunk=20 selection, local storage strategies).

 

5.=20 Research type questions related to P2P streaming. This WG will instead = forward=20 such questions to the IRTF P2PRG or other RG as appropriate. Examples = include=20 cache management.

Goals=20 and Milestones:

Apr=20 2010

Working=20 Group Last Call for problem = statement

Jun=20 2010

Submit=20 problem statement to IESG as Informational=20 document

Aug=20 2010

Working=20 Group Last Call for architecture = survey

Aug=20 2010

Working=20 Group Last Call for requirements

Oct

2010

Submit=20 architecture survey to IESG as Informational=20 document

Oct=20 2010

Submit=20 requirements to IESG as Informational = document

Apr=20 2011

Working=20 Group Last Call for PPSP peer = protocol

Apr

2011

Working=20 Group Last Call for PPSP tracker = protocol

Aug=20 2011

Submit=20 PPSP peer protocol to IESG as Proposed=20 Standard

Aug=20 2011

Submit=20 PPSP tracker protocol to IESG as Proposed=20 Standard

Nov=20 2011

Working=20 Group Last Call of usage document

Nov=20 2011

Working=20 Group Last Call of mobility BCP = document

Jan=20 2012

Submit=20 usage document to IESG as Informational=20 document

Jan=20 2012

Submit=20 mobility BCP document to IESG as Informational=20 document

Apr=20 2012

Dissolve=20 or re-charter

 

 
zhangyunfei
2009-09-10
------_=_NextPart_001_01CA31ED.14BB0579-- From lars.eggert@nokia.com Thu Sep 10 01:59:02 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id EF4273A6949 for ; Thu, 10 Sep 2009 01:59:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.299 X-Spam-Level: X-Spam-Status: No, score=-2.299 tagged_above=-999 required=5 tests=[AWL=-0.300, BAYES_00=-2.599, J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id yi3C+TfBdQaW for ; Thu, 10 Sep 2009 01:59:02 -0700 (PDT) Received: from mail.fit.nokia.com (mail.fit.nokia.com [195.148.124.195]) by core3.amsl.com (Postfix) with ESMTP id 83A923A68BE for ; Thu, 10 Sep 2009 01:59:01 -0700 (PDT) Received: from lars.lan (e701.rooms.aueb.gr [195.251.233.136]) (authenticated bits=0) by mail.fit.nokia.com (8.14.3/8.14.3) with ESMTP id n8A8xGoG020466 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT); Thu, 10 Sep 2009 11:59:17 +0300 (EEST) (envelope-from lars.eggert@nokia.com) Mime-Version: 1.0 (Apple Message framework v1075.2) Content-Type: multipart/signed; boundary=Apple-Mail-123--611950226; protocol="application/pkcs7-signature"; micalg=sha1 From: Lars Eggert In-Reply-To: <200909101423493286131@chinamobile.com> Date: Thu, 10 Sep 2009 11:59:16 +0300 Message-Id: <7787ACCB-1607-42CA-803D-E43D8660EF59@nokia.com> References: <200909101423493286131@chinamobile.com> To: zhangyunfei X-Mailer: Apple Mail (2.1075.2) Cc: "ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 08:59:03 -0000 --Apple-Mail-123--611950226 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252; format=flowed; delsp=yes Hi, in order to make sure that the IESG and IAB have the latest BOF =20 proposal when they make a decision, it'd be good if you either updated =20= the wiki too (since that's currently listed as where the request is on = http://trac.tools.ietf.org/bof/trac/wiki/WikiStart=20 ) or alternatively, replace the wiki with a pointer to the latest =20 relevant email. Lars On 2009-9-10, at 9:23, zhangyunfei wrote: > Dear all, > The following is the modified version of PPSP charter(An early =20 > version was published in the IETF PPSP wiki page).Please review it =20 > and any comments and suggestions are highly appreciated. > > BR > Yunfei > -------------------------------------------------------- > Description of PPSP Working Group: > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is =20= > chartered to develop standard signaling protocols (called PPSP =20 > protocols) for multiple types of entities (e.g. intelligent =20 > endpoints, caches, content distribution network nodes, and/or other =20= > edge devices) to participate in P2P streaming systems in both fixed =20= > and mobile Internet. > > PPSP protocols include the PPSP tracker protocol =96 a signaling =20 > protocol between =93PPSP trackers=94 and =93PPSP peers=94, and the = PPSP peer =20 > protocol =96 a signaling protocol among =93PPSP peers=94. A PPSP = tracker =20 > maintains lists of participating PPSP peers, each for a specific =20 > channel or streaming file, and answers the queries from PPSP peers =20 > for candidate PPSP peers. PPSP peers inform their status information =20= > to PPSP trackers, exchange their chunk availability with other PPSP =20= > peers and/or PPSP trackers, and ask other PPSP peers for wanted data. > > This WG's primary tasks are to produce: > 1. A =93problem statement=94 document describing the problems, =20 > incentives, and scope of developing the PPSP protocols, as well as =20 > common terminologies and concepts. > > 2. A =93requirements=94 document listing the requirements on the =20 > designed PPSP protocols (e.g., general functionality and performance =20= > requirements of PPSP protocols or basic types of information that =20 > PPSP protocols should communicate to facilitate P2P streaming). > > 3. An "architectural survey" document explaining the current P2P =20 > streaming architectures, in particular tracker-based P2P streaming, =20= > and key issues in best practice. > > 4. A proposed standard defining the PPSP peer protocol. This =20 > protocol will define how PPSP peers advertise chunk availability. =20 > The protocol will also define the requests and responses of chunks =20 > among PPSP peers. > > 5. A proposed standard defining the PPSP tracker protocol. This =20 > protocol will define how PPSP peers inform and request information =20 > from PPSP trackers and how PPSP trackers reply to the requests. > > 6. A =93usage document=94 explaining how the protocols defined above, =20= > along with existing IETF protocols, such as RELAOD, ALTO and RTSP, =20 > can inter-operate; and how they may be integrated together to =20 > produce complete P2P streaming systems. > > 7. Optionally a =94mobile usage document=94 (PPSP mobile BCP document) = =20 > to evaluate PPSP with and without Mobile IP support when there are a =20= > lot of mobile peers in the system. > > The work planned for the PPSP WG is distinct from, but requires =20 > close participation with, work in other IETF WGs, particularly =20 > P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot modify =20 > baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determines that =20= > extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to =20 > define such extensions and present to the respective working groups. > > The design of PPSP has to consider security/privacy issues. The =20 > protocol document will contain a complete description of the =20 > security/privacy issues that PPSP should address. > > The following topics are excluded from this WG's scope: > 1. Transport mechanisms for data transmission among PPSP peers, e.g. =20= > using TCP or UDP, unicast or multicast, etc. > > 2. Network coding mechanisms in P2P streaming. Network coding may be =20= > used in P2P streaming, but its support is beyond the scope of =20 > current charter. > > 3. Play-out mechanisms including streaming control (e.g., pause, =20 > fast-forward, and rewind). > > 4. Algorithms that may be different in different deployments (e.g., =20= > chunk selection, local storage strategies). > > 5. Research type questions related to P2P streaming. This WG will =20 > instead forward such questions to the IRTF P2PRG or other RG as =20 > appropriate. Examples include cache management. > Goals and Milestones: > Apr 2010 > > Working Group Last Call for problem statement > > Jun 2010 > > Submit problem statement to IESG as Informational document > > Aug 2010 > > Working Group Last Call for architecture survey > > Aug 2010 > > Working Group Last Call for requirements > > Oct > 2010 > > Submit architecture survey to IESG as Informational document > > Oct 2010 > > Submit requirements to IESG as Informational document > > Apr 2011 > > Working Group Last Call for PPSP peer protocol > > Apr > 2011 > > Working Group Last Call for PPSP tracker protocol > > Aug 2011 > > Submit PPSP peer protocol to IESG as Proposed Standard > > Aug 2011 > > Submit PPSP tracker protocol to IESG as Proposed Standard > > Nov 2011 > > Working Group Last Call of usage document > > Nov 2011 > > Working Group Last Call of mobility BCP document > > Jan 2012 > > Submit usage document to IESG as Informational document > > Jan 2012 > > Submit mobility BCP document to IESG as Informational document > > Apr 2012 > > Dissolve or re-charter > > > > ________________________________ > zhangyunfei > 2009-09-10 > --Apple-Mail-123--611950226 Content-Disposition: attachment; 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Thu, 10 Sep 2009 20:40:07 +0800 (CST) Received: from z-20684ca876cc4 ([200.5.112.178]) by szxml01-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPR0041P9UOJB@szxml01-in.huawei.com>; Thu, 10 Sep 2009 20:40:07 +0800 (CST) Date: Thu, 10 Sep 2009 09:40:11 -0300 From: Ning Zong To: "Schmidt, Christian 1. (NSN - DE/" , ext zhangyunfei , "ppsp@ietf.org" Message-id: <0KPR0041R9UQJB@szxml01-in.huawei.com> MIME-version: 1.0 X-Mailer: Foxmail 5.0 [en] Content-type: multipart/alternative; boundary="Boundary_(ID_Wl5X9Y2vjDQq35OeVmezQA)" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 12:39:47 -0000 This is a multi-part message in MIME format. --Boundary_(ID_Wl5X9Y2vjDQq35OeVmezQA) Content-type: text/plain; charset=gb2312 Content-transfer-encoding: base64 SGksIFNjaG1pZHQsDQoNClBsZWFzZSBzZWUgaW4tbGluZS4NCg0KDQoNCg0KSGkgWXVuZmVpLA0K YWZ0ZXIgcmVhZGluZyB5b3VyIGNoYXJ0ZXIgcHJvcG9zYWwsIGEgdGV4dCBwcm9wb3NhbCBhbmQg MiBxdWVzdGlvbnMgZm9yIGNsYXJpZmljYXRpb25zLg0KDQpCZXN0IFJlZ2FyZHMNCkNocmlzdGlh biBTY2htaWR0DQoNCg0KDQpQcm9wb3NlZCBuZXcgdGV4dCBmb3IgbW9yZSB0cmFuc3BhcmVuY3kg 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J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JtQjHAcMwNle for ; Thu, 10 Sep 2009 08:42:27 -0700 (PDT) Received: from usaga02-in.huawei.com (usaga02-in.huawei.com [206.16.17.70]) by core3.amsl.com (Postfix) with ESMTP id B50663A6A69 for ; Thu, 10 Sep 2009 08:42:26 -0700 (PDT) Received: from huawei.com (localhost [127.0.0.1]) by usaga02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPR007M9IBGYR@usaga02-in.huawei.com> for ppsp@ietf.org; Thu, 10 Sep 2009 08:42:53 -0700 (PDT) Received: from y736742 ([10.124.12.61]) by usaga02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPR00EHWIBCDN@usaga02-in.huawei.com> for ppsp@ietf.org; Thu, 10 Sep 2009 08:42:52 -0700 (PDT) Date: Thu, 10 Sep 2009 10:42:47 -0500 From: Yong Lucy In-reply-to: To: "'Schmidt, Christian 1. (NSN - DE/Munich)'" , 'ext zhangyunfei' , ppsp@ietf.org Message-id: <003301ca322d$58d2af40$3d0c7c0a@china.huawei.com> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Mailer: Microsoft Office Outlook 11 Content-type: multipart/alternative; boundary="Boundary_(ID_Yp437cznRSKs6goD1ufvCw)" Thread-index: Acox304NwK706EpGR1W2ggoSREwtygACRx8AABC4xiA= References: <200909101423493286131@chinamobile.com> Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 15:42:38 -0000 This is a multi-part message in MIME format. --Boundary_(ID_Yp437cznRSKs6goD1ufvCw) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Hi YunFei and Christian, One clarification: "participating entities" listed in the text are the peer in P2P streaming systems, is that right? Thus, "PPSP" trackers are another participator in the systems. Suggest stating that clearly in the first paragraph. Cheers, Lucy _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, Christian 1. (NSN - DE/Munich) Sent: Thursday, September 10, 2009 3:03 AM To: ext zhangyunfei; ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion Hi Yunfei, after reading your charter proposal, a text proposal and 2 questions for clarifications. Best Regards Christian Schmidt Proposed new text for more transparency in main description: Old text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. New text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for P2P streaming systems in both fixed and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, and/or other edge devices. For a specific channel or streaming file, a PPSP tracker maintains lists of particiating PPSP peers. The PPSP tracker answers queries from PPSP peers for candidate PPSP peers. PPSP peers provide their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". Architectural survey 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. It is good to have a description of the current P2P streaming architecture. What is missing is the relation to the PPSP work. Will it contain a proposal for the PPSP architecture? Usage document 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. This sounds more like a "interop document". Was this the intention? _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei Sent: Thursday, September 10, 2009 8:24 AM To: ppsp@ietf.org Subject: [ppsp] ppsp charter discussion Dear all, The following is the modified version of PPSP charter(An early version was published in the IETF PPSP wiki page).Please review it and any comments and suggestions are highly appreciated. BR Yunfei -------------------------------------------------------- Description of PPSP Working Group: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. This WG's primary tasks are to produce: 1. A "problem statement" document describing the problems, incentives, and scope of developing the PPSP protocols, as well as common terminologies and concepts. 2. A "requirements" document listing the requirements on the designed PPSP protocols (e.g., general functionality and performance requirements of PPSP protocols or basic types of information that PPSP protocols should communicate to facilitate P2P streaming). 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. 4. A proposed standard defining the PPSP peer protocol. This protocol will define how PPSP peers advertise chunk availability. The protocol will also define the requests and responses of chunks among PPSP peers. 5. A proposed standard defining the PPSP tracker protocol. This protocol will define how PPSP peers inform and request information from PPSP trackers and how PPSP trackers reply to the requests. 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. 7. Optionally a "mobile usage document" (PPSP mobile BCP document) to evaluate PPSP with and without Mobile IP support when there are a lot of mobile peers in the system. The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups. The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy issues that PPSP should address. The following topics are excluded from this WG's scope: 1. Transport mechanisms for data transmission among PPSP peers, e.g. using TCP or UDP, unicast or multicast, etc. 2. Network coding mechanisms in P2P streaming. Network coding may be used in P2P streaming, but its support is beyond the scope of current charter. 3. Play-out mechanisms including streaming control (e.g., pause, fast-forward, and rewind). 4. Algorithms that may be different in different deployments (e.g., chunk selection, local storage strategies). 5. Research type questions related to P2P streaming. This WG will instead forward such questions to the IRTF P2PRG or other RG as appropriate. Examples include cache management. Goals and Milestones: Apr 2010 Working Group Last Call for problem statement Jun 2010 Submit problem statement to IESG as Informational document Aug 2010 Working Group Last Call for architecture survey Aug 2010 Working Group Last Call for requirements Oct 2010 Submit architecture survey to IESG as Informational document Oct 2010 Submit requirements to IESG as Informational document Apr 2011 Working Group Last Call for PPSP peer protocol Apr 2011 Working Group Last Call for PPSP tracker protocol Aug 2011 Submit PPSP peer protocol to IESG as Proposed Standard Aug 2011 Submit PPSP tracker protocol to IESG as Proposed Standard Nov 2011 Working Group Last Call of usage document Nov 2011 Working Group Last Call of mobility BCP document Jan 2012 Submit usage document to IESG as Informational document Jan 2012 Submit mobility BCP document to IESG as Informational document Apr 2012 Dissolve or re-charter _____ zhangyunfei 2009-09-10 --Boundary_(ID_Yp437cznRSKs6goD1ufvCw) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

Hi YunFei and = Christian,

 

One clarification: = “participating entities” listed in the text are the peer in P2P streaming systems, is that right? = Thus, “PPSP” trackers are another participator in the systems.  Suggest stating = that clearly in the first paragraph.

 

Cheers,

=

Lucy

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, Christian 1. (NSN - = DE/Munich)
Sent: Thursday, September = 10, 2009 3:03 AM
To: ext zhangyunfei; = ppsp@ietf.org
Subject: Re: [ppsp] ppsp = charter discussion

 

Hi Yunfei,

after reading your charter = proposal, a text proposal and 2 questions for clarifications.

 

Best Regards

Christian = Schmidt

 

 

 

Proposed = new text for more transparency in main description:

Old = text:

The = Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types = of entities (e.g. intelligent endpoints, caches, content distribution = network nodes, and/or other edge devices) to participate in P2P streaming = systems in both fixed and mobile Internet.


PPSP protocols include the PPSP tracker = protocol – a signaling protocol between “PPSP trackers” and “PPSP peers”, and the PPSP peer protocol – a signaling protocol among “PPSP peers”. A PPSP tracker maintains lists = of participating PPSP peers, each for a specific channel or streaming file, = and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers = inform their status information to PPSP trackers, exchange their chunk = availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for = wanted data.

 

=

New text:

The = Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for P2P = streaming systems in both fixed and mobile Internet. Participating entities could be = intelligent endpoints, caches, content distribution network nodes, and/or other edge devices.

 

For a = specific channel or streaming file, a PPSP tracker maintains lists of = particiating PPSP peers. The PPSP tracker answers queries from PPSP peers for candidate = PPSP peers. PPSP peers provide their status information to PPSP = trackers, exchange their chunk availability with other PPSP peers and/or PPSP = trackers, and ask other PPSP peers for wanted data. PPSP protocols include the = PPSP tracker protocol – a signaling protocol between “PPSP trackers” and “PPSP peers”, and the PPSP peer protocol – a signaling protocol among “PPSP = peers”.

 

Architectural survey

3. An "architectural survey" = document explaining the current P2P streaming architectures, in particular = tracker-based P2P streaming, and key issues in best = practice.

It is = good to have a description of the current P2P streaming architecture. What is = missing is the relation to the PPSP work. Will it contain a proposal = for the PPSP architecture?

 

Usage = document

6. A “usage document” explaining how the protocols defined above, = along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can = inter-operate; and how they may be integrated together to produce complete P2P = streaming systems.

This = sounds more like a "interop document". Was this the = intention?

 

 

 

 

 

 

 

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei
Sent: Thursday, September = 10, 2009 8:24 AM
To: ppsp@ietf.org
Subject: [ppsp] ppsp = charter discussion

 


Dear all,

   The following is the modified version of = PPSP charter(An early version was published in the IETF PPSP wiki = page).Please review it and any comments and suggestions are highly = appreciated.

 

         &= nbsp; BR

         &= nbsp;  Yunfei

-------------------------------------------------------= -

Description of PPSP Working = Group:

The Peer-to-Peer (P2P) Streaming Protocol = working group (PPSP WG) is chartered to develop standard signaling protocols = (called PPSP protocols) for multiple types of entities (e.g. intelligent = endpoints, caches, content distribution network nodes, and/or other edge devices) = to participate in P2P streaming systems in both fixed and mobile = Internet.


PPSP protocols include the PPSP tracker protocol – a signaling = protocol between “PPSP trackers” and “PPSP peers”, and = the PPSP peer protocol – a signaling protocol among “PPSP = peers”. A PPSP tracker maintains lists of participating PPSP peers, each for a = specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or = PPSP trackers, and ask other PPSP peers for wanted data. =

 

This WG's primary = tasks are to produce:
1. A “problem statement” document describing the problems, incentives, and scope of developing the PPSP protocols, as well as = common terminologies and concepts.

 

2. A “requirements” document = listing the requirements on the designed PPSP protocols (e.g., general functionality = and performance requirements of PPSP protocols or basic types of information = that PPSP protocols should communicate to facilitate P2P = streaming).


3. An "architectural survey" document explaining the current = P2P streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice.


4. A proposed standard defining the PPSP peer protocol. This protocol = will define how PPSP peers advertise chunk availability. The protocol will = also define the requests and responses of chunks among PPSP = peers.

 

5. A proposed = standard defining the PPSP tracker protocol. This protocol will define how PPSP = peers inform and request information from PPSP trackers and how PPSP trackers = reply to the requests.

 

6. A “usage document” explaining = how the protocols defined above, along with existing IETF protocols, such as = RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated = together to produce complete P2P streaming systems.

 

7. Optionally a ”mobile usage = document” (PPSP mobile BCP document) to evaluate PPSP with and without Mobile IP = support when there are a lot of mobile peers in the = system.


The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO = and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, = and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, = MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups.


The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy = issues that PPSP should address.

 

The following topics are excluded from this = WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. = using TCP or UDP, unicast or multicast, etc.


2. Network coding mechanisms in P2P streaming. Network coding may be = used in P2P streaming, but its support is beyond the scope of current = charter.

 

3. Play-out mechanisms including streaming = control (e.g., pause, fast-forward, and rewind).

 

4. Algorithms that may be different in = different deployments (e.g., chunk selection, local storage = strategies).

 

5. Research type questions related to P2P = streaming. This WG will instead forward such questions to the IRTF P2PRG or other = RG as appropriate. Examples include cache = management.

Goals and Milestones:

Apr = 2010

Working Group Last Call for problem statement

Jun = 2010

Submit problem statement to IESG as Informational document

Aug = 2010

Working Group Last Call for = architecture survey

Aug = 2010

Working Group Last Call for = requirements

Oct

2010

Submit architecture survey to IESG = as Informational document

Oct = 2010

Submit requirements to IESG as Informational document

Apr = 2011

Working Group Last Call for PPSP = peer protocol

Apr

2011

Working Group Last Call for PPSP = tracker protocol

Aug = 2011

Submit PPSP peer protocol to IESG as Proposed Standard

Aug = 2011

Submit PPSP tracker protocol to IESG = as Proposed Standard

Nov = 2011

Working Group Last Call of usage = document

Nov = 2011

Working Group Last Call of mobility = BCP document

Jan = 2012

Submit usage document to IESG as Informational document

Jan = 2012

Submit mobility BCP document to IESG = as Informational document

Apr = 2012

Dissolve or re-charter =

 

 

zhangyunfei

2009-09-10

--Boundary_(ID_Yp437cznRSKs6goD1ufvCw)-- From zongning@huawei.com Thu Sep 10 08:54:18 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 8621828C0E0 for ; Thu, 10 Sep 2009 08:54:18 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -98.265 X-Spam-Level: X-Spam-Status: No, score=-98.265 tagged_above=-999 required=5 tests=[AWL=-0.124, BAYES_00=-2.599, FH_RELAY_NODNS=1.451, HELO_MISMATCH_COM=0.553, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, MIME_BASE64_TEXT=1.753, RDNS_NONE=0.1, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mFAaoYKL8X+j for ; Thu, 10 Sep 2009 08:54:16 -0700 (PDT) Received: from szxga04-in.huawei.com (unknown [119.145.14.67]) by core3.amsl.com (Postfix) with ESMTP id 1048D3A67F0 for ; Thu, 10 Sep 2009 08:54:16 -0700 (PDT) Received: from huawei.com (szxga04-in [172.24.2.12]) by szxga04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPR00256IV4VR@szxga04-in.huawei.com> for ppsp@ietf.org; Thu, 10 Sep 2009 23:54:40 +0800 (CST) Received: from huawei.com ([172.24.1.6]) by szxga04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPR00E2UIV4M5@szxga04-in.huawei.com> for ppsp@ietf.org; Thu, 10 Sep 2009 23:54:40 +0800 (CST) Received: from z-20684ca876cc4 ([200.5.112.178]) by szxml02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPR00J4TIUVYJ@szxml02-in.huawei.com>; Thu, 10 Sep 2009 23:54:40 +0800 (CST) Date: Thu, 10 Sep 2009 12:54:42 -0300 From: Ning Zong To: Yong Lucy , "'Schmidt, Christian 1. (NSN - DE" , 'ext zhangyunfei' , "ppsp@ietf.org" Message-id: <0KPR00J4UIUXYJ@szxml02-in.huawei.com> MIME-version: 1.0 X-Mailer: Foxmail 5.0 [en] Content-type: multipart/alternative; boundary="Boundary_(ID_ebtTQ0sJqvTvYZKA2soR0Q)" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 15:54:18 -0000 This is a multi-part message in MIME format. --Boundary_(ID_ebtTQ0sJqvTvYZKA2soR0Q) Content-type: text/plain; charset=gb2312 Content-transfer-encoding: base64 SGksIEx1Y3kNCg0KVGhlIHBhcnRpY2lwYXRpbmcgZW50aXRpZXMgaW4gdGhlIGZpcnN0IHBhcmFn cmFwaCBpbmNsdWRlIGJvdGggcGVlcnMgYW5kIHRyYWNrZXJzIGluIFAyUCBzdHJlYW1pbmcgc3lz dGVtcy4gSW4gc2Vjb25kIHBhcmFncmFwaCwgd2UgZGlzY3VzcyB0aGUgcm9sZXMgb2YgdHJhY2tl cnMgLSBhc3N1bWluZyB0aGF0IHBlb3BsZSBrbm93IHRoZSBiYXNpYyBtZWFuaW5nIG9mIHBlZXJz 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From lucyyong@huawei.com Thu Sep 10 09:49:33 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 12BAC3A6B14 for ; Thu, 10 Sep 2009 09:49:33 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.875 X-Spam-Level: X-Spam-Status: No, score=-1.875 tagged_above=-999 required=5 tests=[AWL=0.123, BAYES_00=-2.599, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vWqpDSy5C66j for ; Thu, 10 Sep 2009 09:49:20 -0700 (PDT) Received: from usaga02-in.huawei.com (usaga02-in.huawei.com [206.16.17.70]) by core3.amsl.com (Postfix) with ESMTP id 421E328C102 for ; Thu, 10 Sep 2009 09:49:20 -0700 (PDT) Received: from huawei.com (localhost [127.0.0.1]) by usaga02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPR007ALLF6YR@usaga02-in.huawei.com> for ppsp@ietf.org; Thu, 10 Sep 2009 09:49:54 -0700 (PDT) Received: from y736742 ([10.124.12.61]) by usaga02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPR00EWHLEZDN@usaga02-in.huawei.com> for ppsp@ietf.org; Thu, 10 Sep 2009 09:49:53 -0700 (PDT) Date: Thu, 10 Sep 2009 11:49:45 -0500 From: Yong Lucy In-reply-to: <0KPR00J4UIUXYJ@szxml02-in.huawei.com> To: 'Ning Zong' , "''Schmidt, Christian 1. (NSN - DE'" , 'ext zhangyunfei' , ppsp@ietf.org Message-id: <001501ca3236$b4cf0790$3d0c7c0a@china.huawei.com> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Mailer: Microsoft Office Outlook 11 Content-type: multipart/alternative; boundary="Boundary_(ID_SviO5cTZLzhD+r7QgH95PA)" Thread-index: AcoyLyprqO4Z1lbhReSnCmgTLpMK4gAAgxUg References: <0KPR00J4UIUXYJ@szxml02-in.huawei.com> Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 16:49:33 -0000 This is a multi-part message in MIME format. --Boundary_(ID_SviO5cTZLzhD+r7QgH95PA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Hi Ning, I see. Thus it should make clear in the first paragraph and state the role for the peer in the second paragraph. Do we anticipate the communication between PPSP trackers? If yes, PPSP tracker protocol should be used for it. Cheers, Lucy _____ From: Ning Zong [mailto:zongning@huawei.com] Sent: Thursday, September 10, 2009 10:55 AM To: Yong Lucy; 'Schmidt, Christian 1. (NSN - DE; 'ext zhangyunfei'; ppsp@ietf.org Subject: Re: Re: [ppsp] ppsp charter discussion Hi, Lucy The participating entities in the first paragraph include both peers and trackers in P2P streaming systems. In second paragraph, we discuss the roles of trackers - assuming that people know the basic meaning of peers. Formal definitions of PPSP peers and PPSP trackers are defined in Problem Statement Draft. BR, Ning Zong _____ Hi YunFei and Christian, One clarification: "participating entities" listed in the text are the peer in P2P streaming systems, is that right? Thus, "PPSP" trackers are another participator in the systems. Suggest stating that clearly in the first paragraph. Cheers, Lucy _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, Christian 1. (NSN - DE/Munich) Sent: Thursday, September 10, 2009 3:03 AM To: ext zhangyunfei; ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion Hi Yunfei, after reading your charter proposal, a text proposal and 2 questions for clarifications. Best Regards Christian Schmidt Proposed new text for more transparency in main description: Old text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. New text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for P2P streaming systems in both fixed and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, and/or other edge devices. For a specific channel or streaming file, a PPSP tracker maintains lists of particiating PPSP peers. The PPSP tracker answers queries from PPSP peers for candidate PPSP peers. PPSP peers provide their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". Architectural survey 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. It is good to have a description of the current P2P streaming architecture. What is missing is the relation to the PPSP work. Will it contain a proposal for the PPSP architecture? Usage document 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. This sounds more like a "interop document". Was this the intention? _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei Sent: Thursday, September 10, 2009 8:24 AM To: ppsp@ietf.org Subject: [ppsp] ppsp charter discussion Dear all, The following is the modified version of PPSP charter(An early version was published in the IETF PPSP wiki page).Please review it and any comments and suggestions are highly appreciated. BR Yunfei -------------------------------------------------------- Description of PPSP Working Group: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. This WG's primary tasks are to produce: 1. A "problem statement" document describing the problems, incentives, and scope of developing the PPSP protocols, as well as common terminologies and concepts. 2. A "requirements" document listing the requirements on the designed PPSP protocols (e.g., general functionality and performance requirements of PPSP protocols or basic types of information that PPSP protocols should communicate to facilitate P2P streaming). 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. 4. A proposed standard defining the PPSP peer protocol. This protocol will define how PPSP peers advertise chunk availability. The protocol will also define the requests and responses of chunks among PPSP peers. 5. A proposed standard defining the PPSP tracker protocol. This protocol will define how PPSP peers inform and request information from PPSP trackers and how PPSP trackers reply to the requests. 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. 7. Optionally a "mobile usage document" (PPSP mobile BCP document) to evaluate PPSP with and without Mobile IP support when there are a lot of mobile peers in the system. The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups. The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy issues that PPSP should address. The following topics are excluded from this WG's scope: 1. Transport mechanisms for data transmission among PPSP peers, e.g. using TCP or UDP, unicast or multicast, etc. 2. Network coding mechanisms in P2P streaming. Network coding may be used in P2P streaming, but its support is beyond the scope of current charter. 3. Play-out mechanisms including streaming control (e.g., pause, fast-forward, and rewind). 4. Algorithms that may be different in different deployments (e.g., chunk selection, local storage strategies). 5. Research type questions related to P2P streaming. This WG will instead forward such questions to the IRTF P2PRG or other RG as appropriate. Examples include cache management. Goals and Milestones: Apr 2010 Working Group Last Call for problem statement Jun 2010 Submit problem statement to IESG as Informational document Aug 2010 Working Group Last Call for architecture survey Aug 2010 Working Group Last Call for requirements Oct 2010 Submit architecture survey to IESG as Informational document Oct 2010 Submit requirements to IESG as Informational document Apr 2011 Working Group Last Call for PPSP peer protocol Apr 2011 Working Group Last Call for PPSP tracker protocol Aug 2011 Submit PPSP peer protocol to IESG as Proposed Standard Aug 2011 Submit PPSP tracker protocol to IESG as Proposed Standard Nov 2011 Working Group Last Call of usage document Nov 2011 Working Group Last Call of mobility BCP document Jan 2012 Submit usage document to IESG as Informational document Jan 2012 Submit mobility BCP document to IESG as Informational document Apr 2012 Dissolve or re-charter _____ zhangyunfei 2009-09-10 _____ --Boundary_(ID_SviO5cTZLzhD+r7QgH95PA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

Hi = Ning,

 

I see. = Thus it should make clear in the first paragraph and state the role for the peer = in the second paragraph.  

 

Do we = anticipate the communication between PPSP trackers? If yes, PPSP tracker protocol = should be used for it.

 

Cheers,

Lucy

 

 

 

From: Ning = Zong [mailto:zongning@huawei.com]
Sent: Thursday, September = 10, 2009 10:55 AM
To: Yong Lucy; 'Schmidt, = Christian 1. (NSN - DE; 'ext zhangyunfei'; ppsp@ietf.org
Subject: Re: Re: [ppsp] = ppsp charter discussion

 

Hi, Lucy

 

The participating entities in the first paragraph include both peers and = trackers in P2P streaming systems. In second paragraph, we discuss the roles of trackers - assuming that people know the basic meaning of = peers.

Formal definitions of PPSP peers and PPSP trackers are defined in Problem = Statement Draft.

 

BR,

Ning Zong

 

Hi YunFei and = Christian,

 

One clarification: “participating entities” = listed in the text are the peer in P2P streaming systems, is that right? Thus, “PPSP” trackers are another participator in the systems.  Suggest stating that clearly in the first = paragraph.

 

Cheers,

Lucy

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On = Behalf Of Schmidt, Christian 1. (NSN - DE/Munich)
Sent: Thursday, September = 10, 2009 3:03 AM
To: ext zhangyunfei; = ppsp@ietf.org
Subject: Re: [ppsp] ppsp = charter discussion

 

Hi Yunfei,

after reading your charter proposal, a text proposal and 2 questions for clarifications.

 

Best Regards

Christian Schmidt

 

 

 

Proposed new text for more transparency = in main description:

Old text:

The Peer-to-Peer (P2P) Streaming Protocol = working group (PPSP WG) is chartered to develop standard signaling protocols = (called PPSP protocols) for multiple types of entities (e.g. intelligent = endpoints, caches, content distribution network nodes, and/or other edge devices) = to participate in P2P streaming systems in both fixed and mobile = Internet.


PPSP protocols include the PPSP tracker = protocol – a signaling protocol between “PPSP trackers” and “PPSP peers”, and the PPSP peer protocol – a signaling protocol among “PPSP peers”. A PPSP tracker maintains lists = of participating PPSP peers, each for a specific channel or streaming file, = and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers = inform their status information to PPSP trackers, exchange their chunk = availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for = wanted data.

 

New text:

The Peer-to-Peer (P2P) Streaming Protocol = working group (PPSP WG) is chartered to develop standard signaling protocols = (called PPSP protocols) for P2P streaming systems in both fixed and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, and/or other edge = devices.

 

For a specific channel or streaming file, a = PPSP tracker maintains lists of particiating PPSP peers. The PPSP tracker = answers queries from PPSP peers for candidate PPSP peers. PPSP = peers provide their status information to PPSP trackers, exchange their chunk availability = with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for = wanted data. PPSP protocols include the PPSP tracker protocol – a = signaling protocol between “PPSP trackers” and “PPSP = peers”, and the PPSP peer protocol – a signaling protocol among “PPSP peers”. =

 

Architectural = survey

3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice.

It is good to have a description of the = current P2P streaming architecture. What is missing is the relation to the PPSP = work. Will it contain a proposal for the PPSP = architecture?

 

Usage = document

6. A “usage document” explaining = how the protocols defined above, along with existing IETF protocols, such as = RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated = together to produce complete P2P streaming = systems.

This sounds more like a "interop = document". Was this the intention?

 

 

 

 

 

 

 

 

From: = ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On = Behalf Of ext zhangyunfei
Sent: Thursday, September = 10, 2009 8:24 AM
To: ppsp@ietf.org
Subject: [ppsp] ppsp = charter discussion

 =

Dear = all,

   The following is the modified version of = PPSP charter(An early version was published in the IETF PPSP wiki = page).Please review it and any comments and suggestions are highly = appreciated.

 

         &= nbsp; BR

         &= nbsp;  Yunfei

-------------------------------------------------------= -

Description of PPSP Working = Group:

The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is = chartered to develop standard signaling protocols (called PPSP protocols) for = multiple types of entities (e.g. intelligent endpoints, caches, content distribution = network nodes, and/or other edge devices) to participate in P2P streaming = systems in both fixed and mobile = Internet.


PPSP protocols include the PPSP tracker protocol – a signaling = protocol between “PPSP trackers” and “PPSP peers”, and = the PPSP peer protocol – a signaling protocol among “PPSP = peers”. A PPSP tracker maintains lists of participating PPSP peers, each for a = specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or = PPSP trackers, and ask other PPSP peers for wanted data. =

 

This WG's primary tasks are to = produce:
1. A “problem statement” document describing the problems, incentives, and scope of developing the PPSP protocols, as well as = common terminologies and concepts.

 

2. A “requirements” document listing the requirements on the = designed PPSP protocols (e.g., general functionality and performance requirements = of PPSP protocols or basic types of information that PPSP protocols should communicate to facilitate P2P = streaming).


3. An "architectural survey" document explaining the current = P2P streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice.


4. A proposed standard defining the PPSP peer protocol. This protocol = will define how PPSP peers advertise chunk availability. The protocol will = also define the requests and responses of chunks among PPSP = peers.

 

5. A proposed standard defining the = PPSP tracker protocol. This protocol will define how PPSP peers inform and = request information from PPSP trackers and how PPSP trackers reply to the = requests.

 

6. A “usage document” explaining how the protocols defined = above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce = complete P2P streaming systems.

 

7. Optionally a ”mobile usage document” (PPSP mobile BCP = document) to evaluate PPSP with and without Mobile IP support when there are a lot of = mobile peers in the system.


The work planned for the PPSP WG is distinct from, but requires close = participation with, work in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The = PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, and MMUSIC = behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP = will seek to define such extensions and present to the respective working = groups.


The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy = issues that PPSP should address.

 

The following topics are excluded from this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. = using TCP or UDP, unicast or multicast, = etc.


2. Network coding mechanisms in P2P streaming. Network coding may be = used in P2P streaming, but its support is beyond the scope of current = charter.

 

3. Play-out mechanisms including streaming control (e.g., pause, = fast-forward, and rewind).

 

4. Algorithms that may be different in different deployments (e.g., chunk selection, local storage = strategies).

 

5. Research type questions related to P2P streaming. This WG will instead = forward such questions to the IRTF P2PRG or other RG as appropriate. Examples = include cache management.

Goals and = Milestones:

Apr 2010

Working Group Last Call for problem = statement

Jun 2010

Submit problem statement to IESG as Informational = document

Aug 2010

Working Group Last Call for architecture = survey

Aug 2010

Working Group Last Call for = requirements

Oct

2010

Submit architecture survey to IESG as Informational = document

Oct 2010

Submit requirements to IESG as Informational = document

Apr 2011

Working Group Last Call for PPSP peer = protocol

Apr

2011

Working Group Last Call for PPSP tracker = protocol

Aug 2011

Submit PPSP peer protocol to IESG as Proposed = Standard

Aug 2011

Submit PPSP tracker protocol to IESG as Proposed = Standard

Nov 2011

Working Group Last Call of usage = document

Nov 2011

Working Group Last Call of mobility BCP = document

Jan 2012

Submit usage document to IESG as Informational = document

Jan 2012

Submit mobility BCP document to IESG as Informational = document

Apr 2012

Dissolve or re-charter

 

 =

zhangyunfei

2009-09-10

--Boundary_(ID_SviO5cTZLzhD+r7QgH95PA)-- From ping@pingpan.org Thu Sep 10 10:22:26 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 6F4403A6B46 for ; Thu, 10 Sep 2009 10:22:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -5.234 X-Spam-Level: X-Spam-Status: No, score=-5.234 tagged_above=-999 required=5 tests=[AWL=-0.742, BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, HTML_FONT_FACE_BAD=0.884, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, RCVD_IN_DNSWL_MED=-4] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id aUxlt2fY+iP1 for ; Thu, 10 Sep 2009 10:22:24 -0700 (PDT) Received: from exprod7og124.obsmtp.com (exprod7og124.obsmtp.com [64.18.2.26]) by core3.amsl.com (Postfix) with SMTP id A377928C198 for ; Thu, 10 Sep 2009 10:22:23 -0700 (PDT) Received: from source ([209.85.216.203]) by exprod7ob124.postini.com ([64.18.6.12]) with SMTP ID DSNKSqk17mNZbQg3giYmIbefOZjtcFwoZKbA@postini.com; Thu, 10 Sep 2009 10:22:59 PDT Received: by mail-px0-f203.google.com with SMTP id 41so247783pxi.30 for ; Thu, 10 Sep 2009 10:22:54 -0700 (PDT) MIME-Version: 1.0 Received: by 10.142.61.37 with SMTP id j37mr179506wfa.35.1252603374099; Thu, 10 Sep 2009 10:22:54 -0700 (PDT) In-Reply-To: <0KPR00J4UIUXYJ@szxml02-in.huawei.com> References: <0KPR00J4UIUXYJ@szxml02-in.huawei.com> From: Ping Pan Date: Thu, 10 Sep 2009 10:22:34 -0700 Message-ID: <22d04a930909101022i435f0861u55f4b135da4c366f@mail.gmail.com> To: Ning Zong Content-Type: multipart/alternative; boundary=001636e0aef22860c004733c732f Cc: "ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 17:22:26 -0000 --001636e0aef22860c004733c732f Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Ning, I'd think that it is very important to emphasis the target users of the work, which has been quoted as "intelligent endpoints, caches, content distribution network nodes, and/or other edge devices." If possible, I would hope that further specification, clarification and constraints to be added in one of the documents. The reasoning is that, if the work is to enable further proliferation of P2= P clients within the networks, then the WG needs to address issues including security, privacy and copyrights extensively. This may be above and beyond technology, and is probably outside the scope of PPSP. On the other hand, if the work is to enable more efficient streaming conten= t distribtution within a controlled environment by leveraging mechanisms such as tracker management and chuck discovery, then the work is well understood= , and can be clearly defined, specified and experimented in the near future. 2 cents, - Ping 2009/9/10 Ning Zong > Hi, Lucy > > The participating entities in the first paragraph include both peers and > trackers in P2P streaming systems. In second paragraph, we discuss the ro= les > of trackers - assuming that people know the basic meaning of peers. > Formal definitions of PPSP peers and PPSP trackers are defined in Problem > Statement Draft. > > BR, > Ning Zong > > ------------------------------ > > Hi YunFei and Christian, > > > > One clarification: =E2=80=9Cparticipating entities=E2=80=9D listed in the= text are the peer > in P2P streaming systems, is that right? Thus, =E2=80=9CPPSP=E2=80=9D tra= ckers are another > participator in the systems. Suggest stating that clearly in the first > paragraph. > > > > Cheers, > > Lucy > > > ------------------------------ > > *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf O= f > *Schmidt, Christian 1. (NSN - DE/Munich) > *Sent:* Thursday, September 10, 2009 3:03 AM > *To:* ext zhangyunfei; ppsp@ietf.org > *Subject:* Re: [ppsp] ppsp charter discussion > > > > Hi Yunfei, > > after reading your charter proposal, a text proposal and 2 questions for > clarifications. > > > > Best Regards > > Christian Schmidt > > > > > > > > Proposed new text for more transparency in main description: > > Old text: > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP protocols) > for multiple types of entities (e.g. intelligent endpoints, caches, conte= nt > distribution network nodes, and/or other edge devices) to participate in = P2P > streaming systems in both fixed and mobile Internet. > > > PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling pr= otocol > between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D,= and the PPSP peer protocol =E2=80=93 a > signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker mai= ntains lists of > participating PPSP peers, each for a specific channel or streaming file, = and > answers the queries from PPSP peers for candidate PPSP peers. PPSP peers > inform their status information to PPSP trackers, exchange their chunk > availability with other PPSP peers and/or PPSP trackers, and ask other PP= SP > peers for wanted data. > > > > New text: > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP > protocols) for P2P streaming systems in both fixed and mobile Internet. > Participating entities could be intelligent endpoints, caches, content > distribution network nodes, and/or other edge devices. > > > > For a specific channel or streaming file, a PPSP tracker maintains lists = of > particiating PPSP peers. The PPSP tracker answers queries from PPSP peers > for candidate PPSP peers. PPSP peers provide their status information to > PPSP trackers, exchange their chunk availability with other PPSP peers > and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP > protocols include the PPSP tracker protocol =E2=80=93 a signaling protoco= l between > =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and the= PPSP peer protocol =E2=80=93 a signaling > protocol among =E2=80=9CPPSP peers=E2=80=9D. > > > > Architectural survey > > 3. An "architectural survey" document explaining the current P2P streamin= g > architectures, in particular tracker-based P2P streaming, and key issues = in > best practice. > > It is good to have a description of the current P2P streaming architectur= e. > What is missing is the relation to the PPSP work. Will it contain a propo= sal > for the PPSP architecture? > > > > Usage document > > 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols define= d above, along > with existing IETF protocols, such as RELAOD, ALTO and RTSP, can > inter-operate; and how they may be integrated together to produce complet= e > P2P streaming systems. > > This sounds more like a "interop document". Was this the intention? > > > > > > > > > > > > > > > > > ------------------------------ > > *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf O= f > *ext zhangyunfei > *Sent:* Thursday, September 10, 2009 8:24 AM > *To:* ppsp@ietf.org > *Subject:* [ppsp] ppsp charter discussion > > ** > > *Dear all,* > > * The following is the modified version of PPSP charter(An early versio= n > was published in the IETF PPSP wiki page).Please review it and any commen= ts > and suggestions are highly appreciated.* > > > > * BR* > > * Yunfei* > > *--------------------------------------------------------* > > *Description of PPSP Working Group:* > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP protocols) > for multiple types of entities (e.g. intelligent endpoints, caches, conte= nt > distribution network nodes, and/or other edge devices) to participate in = P2P > streaming systems in both fixed and mobile Internet. > > > PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling pr= otocol > between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D,= and the PPSP peer protocol =E2=80=93 a > signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker mai= ntains lists of > participating PPSP peers, each for a specific channel or streaming file, = and > answers the queries from PPSP peers for candidate PPSP peers. PPSP peers > inform their status information to PPSP trackers, exchange their chunk > availability with other PPSP peers and/or PPSP trackers, and ask other PP= SP > peers for wanted data. > > > > This WG's primary tasks are to produce: > 1. A =E2=80=9Cproblem statement=E2=80=9D document describing the problems= , incentives, and > scope of developing the PPSP protocols, as well as common terminologies a= nd > concepts. > > > > 2. A =E2=80=9Crequirements=E2=80=9D document listing the requirements on = the designed PPSP > protocols (e.g., general functionality and performance requirements of PP= SP > protocols or basic types of information that PPSP protocols should > communicate to facilitate P2P streaming). > > > 3. An "architectural survey" document explaining the current P2P streamin= g > architectures, in particular tracker-based P2P streaming, and key issues = in > best practice. > > > 4. A proposed standard defining the PPSP peer protocol. This protocol wil= l > define how PPSP peers advertise chunk availability. The protocol will als= o > define the requests and responses of chunks among PPSP peers. > > > > 5. A proposed standard defining the PPSP tracker protocol. This protocol > will define how PPSP peers inform and request information from PPSP track= ers > and how PPSP trackers reply to the requests. > > > > 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols define= d above, along > with existing IETF protocols, such as RELAOD, ALTO and RTSP, can > inter-operate; and how they may be integrated together to produce complet= e > P2P streaming systems. > > > > 7. Optionally a =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile BCP = document) to > evaluate PPSP with and without Mobile IP support when there are a lot of > mobile peers in the system. > > > The work planned for the PPSP WG is distinct from, but requires close > participation with, work in other IETF WGs, particularly P2PSIP, ALTO and > MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, = and > MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMU= SIC > are needed, PPSP will seek to define such extensions and present to the > respective working groups. > > > The design of PPSP has to consider security/privacy issues. The protocol > document will contain a complete description of the security/privacy issu= es > that PPSP should address. > > > > The following topics are excluded from this WG's scope: > 1. Transport mechanisms for data transmission among PPSP peers, e.g. usin= g > TCP or UDP, unicast or multicast, etc. > > > 2. Network coding mechanisms in P2P streaming. Network coding may be used > in P2P streaming, but its support is beyond the scope of current charter. > > > > 3. Play-out mechanisms including streaming control (e.g., pause, > fast-forward, and rewind). > > > > 4. Algorithms that may be different in different deployments (e.g., chunk > selection, local storage strategies). > > > > 5. Research type questions related to P2P streaming. This WG will instead > forward such questions to the IRTF P2PRG or other RG as appropriate. > Examples include cache management. > > *Goals and Milestones:* > > Apr 2010 > > Working Group Last Call for problem statement > > Jun 2010 > > Submit problem statement to IESG as Informational document > > Aug 2010 > > Working Group Last Call for architecture survey > > Aug 2010 > > Working Group Last Call for requirements > > Oct > > 2010 > > Submit architecture survey to IESG as Informational document > > Oct 2010 > > Submit requirements to IESG as Informational document > > Apr 2011 > > Working Group Last Call for PPSP peer protocol > > Apr > > 2011 > > Working Group Last Call for PPSP tracker protocol > > Aug 2011 > > Submit PPSP peer protocol to IESG as Proposed Standard > > Aug 2011 > > Submit PPSP tracker protocol to IESG as Proposed Standard > > Nov 2011 > > Working Group Last Call of usage document > > Nov 2011 > > Working Group Last Call of mobility BCP document > > Jan 2012 > > Submit usage document to IESG as Informational document > > Jan 2012 > > Submit mobility BCP document to IESG as Informational document > > Apr 2012 > > Dissolve or re-charter > > > > > ------------------------------ > > zhangyunfei > > 2009-09-10 > ------------------------------ > > _______________________________________________ > ppsp mailing list > ppsp@ietf.org > https://www.ietf.org/mailman/listinfo/ppsp > > --001636e0aef22860c004733c732f Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Ning,

I'd think that it is very important to e= mphasis the target users of the work, which has been quoted as "intelligent endpoints, ca= ches, content distribution network nodes, and/or other edge devices<= span>."

If possible, I would hope that further specification, c= larification and constraints to be added in one of the documents.

The reasoning is that, if the work is to enable further=C2= =A0proliferation=C2=A0of P2P clients within the networks, then the WG needs= to address issues including security, privacy and copyrights extensively. = This may be above and beyond technology, and=C2=A0is probably outside the s= cope of PPSP.

On the other hand, if the work is to enable more effici= ent streaming content distribtution within a controlled=C2=A0environment by= leveraging mechanisms such as tracker management and chuck discovery, then= the work is well understood, and can be clearly defined, specified and exp= erimented in the near future.

2 cents,

- Ping

2009/9/10 Ning Zong &l= t;zongning@huawei.com>=
Hi, Lucy
=C2=A0
The participating entities in the first paragraph include both peers a= nd=20 trackers in P2P streaming systems. In second paragraph, we discuss the role= s=20 of=C2=A0trackers -=C2=A0assuming that people know the basic meaning of=20 peers.
Formal definitions of PPSP peers and PPSP trackers are defined in Prob= lem=20 Statement Draft.
=C2=A0
BR,
Ning Zong
=C2=A0

Hi YunFei and=20 Christian,

=C2=A0

One clarification:=20 =E2=80=9Cparticipating entities=E2=80=9D listed in the text are the peer in= P2P streaming=20 systems, is that right? Thus, =E2=80=9CPPSP=E2=80=9D trackers are another p= articipator in the=20 systems. =C2=A0Suggest stating that clearly in the first=20 paragraph.

=C2=A0

Cheers,

Lucy

=C2=A0

From:=20 ppsp-bounces@iet= f.org [mailto:ppsp-bounces@ietf.org] On Behalf = Of Schmidt, Christian 1. (NSN -=20 DE/Munich)
Sent: Thursday= ,=20 September 10, 2009 3:03 AM
To:=20 ext zhangyunfei; ppsp@ie= tf.org
Subject: Re: [= ppsp] ppsp charter=20 discussion

=C2=A0

Hi=20 Yunfei,

after reading your=20 charter proposal, a text proposal and 2 questions for=20 clarifications.

=C2=A0

Best=20 Regards

Christian=20 Schmidt

=C2=A0

=C2=A0

=C2=A0

Proposed new=20 text=C2=A0for more transparency in main description:

Old=20 text:<= /font>

The=20 Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered = to=20 develop standard signaling protocols (called PPSP protocols) for multiple t= ypes=20 of entities (e.g. intelligent endpoints, caches, content distribution netwo= rk=20 nodes, and/or other edge devices) to participate in P2P streaming systems i= n=20 both fixed and mobile Internet.


= PPSP protocols include the PPSP=20 tracker protocol =E2=80=93 a signaling protocol between =E2=80=9CPPSP track= ers=E2=80=9D and =E2=80=9CPPSP=20 peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling protocol a= mong =E2=80=9CPPSP peers=E2=80=9D. A=20 PPSP tracker maintains lists of participating PPSP peers, each for a specif= ic=20 channel or streaming file, and answers the queries from PPSP peers for cand= idate=20 PPSP peers. PPSP peers inform their status information to PPSP trackers,=20 exchange their chunk availability with other PPSP peers and/or PPSP tracker= s,=20 and ask other PPSP peers for wanted data.=20

=C2=A0

New=C2=A0text:

The=20 Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered = to=20 develop standard signaling protocols (called PPSP protocols)=C2=A0for P2P= =20 streaming systems in both fixed and mobile Internet. Participating entities= =20 could be intelligent endpoints, caches, content distribution network nodes,= =20 and/or other edge devices.

=C2=A0

For a specific=20 channel or streaming file, a PPSP tracker maintains lists of particiating P= PSP=20 peers. The PPSP tracker answers queries from PPSP peers for candidate PPSP= =20 peers. PPSP peers=C2=A0provide their status information to PPSP trackers,= =20 exchange their chunk availability with other PPSP peers and/or PPSP tracker= s,=20 and ask other PPSP peers for wanted data. PPSP protocols include the PPSP= =20 tracker protocol =E2=80=93 a signaling protocol between =E2=80=9CPPSP track= ers=E2=80=9D and =E2=80=9CPPSP=20 peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling protocol a= mong =E2=80=9CPPSP=20 peers=E2=80=9D.=20

=C2=A0

Architectural=20 survey

3. An "architectural survey"=20 document explaining the current P2P streaming architectures, in particular= =20 tracker-based P2P streaming, and key issues in best=20 practice.

It is good to=20 have a description of the current P2P streaming architecture. What is missi= ng is=20 the relation to the PPSP work. Will it contain a proposal for=C2=A0the PPSP= =20 architecture?

=C2=A0

Usage=20 document

6. A =E2=80=9Cus= age=20 document=E2=80=9D explaining how the protocols defined above, along with ex= isting IETF=20 protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they m= ay be=20 integrated together to produce complete P2P streaming=20 systems.

This sounds=20 more like a "interop document". Was this the=20 intention?

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

Fro= m:=20 ppsp-bounces@iet= f.org [mailto:ppsp-bounces@ietf.org] On Behalf = Of ext zhangyunfei
Sent: Thursday, September 10= , 2009 8:24=20 AM
To:=20 ppsp@ietf.org
= Subject: [ppsp]=20 ppsp charter discussion

=C2=A0


Dear=20 all,

=C2=A0=C2=A0=20 The following is the modified version of PPSP charter(An early version was= =20 published in the IETF PPSP wiki page).Please review it and any comments and= =20 suggestions are highly appreciated.

=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20 BR

=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20 Yunfei

------------------------= --------------------------------

Description=20 of PPSP Working Group:

The Peer-to-Peer (P2P)=20 Streaming Protocol working group (PPSP WG) is chartered to develop standard= =20 signaling protocols (called PPSP protocols) for multiple types of entities = (e.g.=20 intelligent endpoints, caches, content distribution network nodes, and/or o= ther=20 edge devices) to participate in P2P streaming systems in both fixed and mob= ile=20 Internet.


PPSP protocols include=20 the PPSP tracker protocol =E2=80=93 a signaling protocol between =E2=80=9CP= PSP trackers=E2=80=9D and=20 =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signal= ing protocol among =E2=80=9CPPSP=20 peers=E2=80=9D. A PPSP tracker maintains lists of participating PPSP peers,= each for a=20 specific channel or streaming file, and answers the queries from PPSP peers= for=20 candidate PPSP peers. PPSP peers inform their status information to PPSP=20 trackers, exchange their chunk availability with other PPSP peers and/or PP= SP=20 trackers, and ask other PPSP peers for wanted data.=20

=C2=A0

This WG'= s=20 primary tasks are to produce:
1. A =E2=80=9Cproblem statement=E2=80=9D d= ocument describing=20 the problems, incentives, and scope of developing the PPSP protocols, as we= ll as=20 common terminologies and concepts.

=C2=A0

2. A =E2=80=9Crequirements=E2=80=9D document= =20 listing the requirements on the designed PPSP protocols (e.g., general=20 functionality and performance requirements of PPSP protocols or basic types= of=20 information that PPSP protocols should communicate to facilitate P2P=20 streaming).


3. An "architectural=20 survey" document explaining the current P2P streaming architectures, i= n=20 particular tracker-based P2P streaming, and key issues in best=20 practice.


4. A=20 proposed standard defining the PPSP peer protocol. This protocol will defin= e how=20 PPSP peers advertise chunk availability. The protocol will also define the= =20 requests and responses of chunks among PPSP peers.

=C2=A0

5. A propose= d=20 standard defining the PPSP tracker protocol. This protocol will define how = PPSP=20 peers inform and request information from PPSP trackers and how PPSP tracke= rs=20 reply to the requests.

=C2=A0

6. A =E2=80=9Cusage document=E2=80=9D=20 explaining how the protocols defined above, along with existing IETF protoc= ols,=20 such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integ= rated=20 together to produce complete P2P streaming systems.

=C2=A0

7. Optionally a =E2=80=9Dmobile=20 usage document=E2=80=9D (PPSP mobile BCP document) to evaluate PPSP with an= d without=20 Mobile IP support when there are a lot of mobile peers in the=20 system.


The work planned for the=20 PPSP WG is distinct from, but requires close participation with, work in ot= her=20 IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it= =20 cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determin= es=20 that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to defin= e=20 such extensions and present to the respective working=20 groups.


The design of PPSP has=20 to consider security/privacy issues. The protocol document will contain a= =20 complete description of the security/privacy issues that PPSP should=20 address.

=C2=A0

The following topics are=20 excluded from this WG's scope:
1. Transport mechanisms for data tran= smission=20 among PPSP peers, e.g. using TCP or UDP, unicast or multicast,=20 etc.


2. Network coding=20 mechanisms in P2P streaming. Network coding may be used in P2P streaming, b= ut=20 its support is beyond the scope of current charter.

=C2=A0

3. Play-out mechanisms=20 including streaming control (e.g., pause, fast-forward, and=20 rewind).

=C2=A0

4. Algorithms that may be=20 different in different deployments (e.g., chunk selection, local storage=20 strategies).

=C2=A0

5. Research type questions=20 related to P2P streaming. This WG will instead forward such questions to th= e=20 IRTF P2PRG or other RG as appropriate. Examples include cache=20 management.

Goals and=20 Milestones:

Apr=20 2010

Working Group Last=20 Call for problem statement

Jun=20 2010

Submit problem=20 statement to IESG as Informational=20 document

Aug=20 2010

Working Group Last=20 Call for architecture survey

Aug=20 2010

Working Group Last=20 Call for requirements

Oct

2010

Submit architecture=20 survey to IESG as Informational=20 document

Oct=20 2010

Submit requirements to=20 IESG as Informational document

Apr=20 2011

Working Group Last=20 Call for PPSP peer protocol

Apr

2011

Working Group Last=20 Call for PPSP tracker protocol

Aug=20 2011

Submit PPSP peer=20 protocol to IESG as Proposed Standard

Aug=20 2011

Submit PPSP tracker=20 protocol to IESG as Proposed Standard

Nov=20 2011

Working Group Last=20 Call of usage document

Nov=20 2011

Working Group Last=20 Call of mobility BCP document

Jan=20 2012

Submit usage document=20 to IESG as Informational document

Jan=20 2012

Submit mobility BCP=20 document to IESG as Informational=20 document

Apr=20 2012

Dissolve or re-charter=20

=C2=A0

=C2=A0

zhangyunfei

2009-09-10

=

_______________________________________________
ppsp mailing list
ppsp@ietf.org
ht= tps://www.ietf.org/mailman/listinfo/ppsp


--001636e0aef22860c004733c732f-- From zongning@huawei.com Thu Sep 10 11:59:35 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 53DC628C1B4 for ; Thu, 10 Sep 2009 11:59:35 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -98.834 X-Spam-Level: X-Spam-Status: No, score=-98.834 tagged_above=-999 required=5 tests=[AWL=0.527, BAYES_00=-2.599, HTML_FONT_FACE_BAD=0.884, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, MIME_BASE64_TEXT=1.753, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ePlTLLbzQdeU for ; Thu, 10 Sep 2009 11:59:32 -0700 (PDT) Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [119.145.14.66]) by core3.amsl.com (Postfix) with ESMTP id EBCBF3A6915 for ; Thu, 10 Sep 2009 11:59:31 -0700 (PDT) Received: from huawei.com (szxga03-in [172.24.2.9]) by szxga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPR00GIIRFK8J@szxga03-in.huawei.com> for ppsp@ietf.org; Fri, 11 Sep 2009 02:59:45 +0800 (CST) Received: from huawei.com ([172.24.1.6]) by szxga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPR00DBLRFKFO@szxga03-in.huawei.com> for ppsp@ietf.org; Fri, 11 Sep 2009 02:59:44 +0800 (CST) Received: from z-20684ca876cc4 ([200.5.112.178]) by szxml02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPR00JXNRF9YJ@szxml02-in.huawei.com>; Fri, 11 Sep 2009 02:59:44 +0800 (CST) Date: Thu, 10 Sep 2009 15:59:48 -0300 From: Ning Zong To: Ping Pan Message-id: <0KPR00JXORFEYJ@szxml02-in.huawei.com> MIME-version: 1.0 X-Mailer: Foxmail 5.0 [en] Content-type: multipart/alternative; boundary="Boundary_(ID_okeO5GCe2i7katufOU0mhQ)" Cc: "ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 18:59:35 -0000 This is a multi-part message in MIME format. --Boundary_(ID_okeO5GCe2i7katufOU0mhQ) Content-type: text/plain; charset=gb2312 Content-transfer-encoding: base64 SGksIFBpbmcsDQoNClRoYW5rIHlvdSBmb3IgeW91ciBjb21tZW50cywgcGxlYXNlIHNlZSBpbi1s aW5lLg0KDQoNCg0KDQpOaW5nLA0KDQoNCkknZCB0aGluayB0aGF0IGl0IGlzIHZlcnkgaW1wb3J0 YW50IHRvIGVtcGhhc2lzIHRoZSB0YXJnZXQgdXNlcnMgb2YgdGhlIHdvcmssIHdoaWNoIGhhcyBi ZWVuIHF1b3RlZCBhcyAiaW50ZWxsaWdlbnQgZW5kcG9pbnRzLCBjYWNoZXMsIGNvbnRlbnQgZGlz dHJpYnV0aW9uIG5ldHdvcmsgbm9kZXMsIGFuZC9vciBvdGhlciBlZGdlIGRldmljZXMuIg0KDQpb TmluZyBab25nXSBUaGlzIGlzIGEgZ29vZCBzdWdnZXN0aW9uLg0KDQoNCklmIHBvc3NpYmxlLCBJ IHdvdWxkIGhvcGUgdGhhdCBmdXJ0aGVyIHNwZWNpZmljYXRpb24sIGNsYXJpZmljYXRpb24gYW5k 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score=-98.355 tagged_above=-999 required=5 tests=[AWL=-0.214, BAYES_00=-2.599, FH_RELAY_NODNS=1.451, HELO_MISMATCH_COM=0.553, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, MIME_BASE64_TEXT=1.753, RDNS_NONE=0.1, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xPDo8pT2jMp5 for ; Thu, 10 Sep 2009 12:13:28 -0700 (PDT) Received: from szxga01-in.huawei.com (unknown [119.145.14.64]) by core3.amsl.com (Postfix) with ESMTP id 286CF3A6B73 for ; Thu, 10 Sep 2009 12:13:22 -0700 (PDT) Received: from huawei.com (szxga01-in [172.24.2.3]) by szxga01-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPR00K81S2YLC@szxga01-in.huawei.com> for ppsp@ietf.org; Fri, 11 Sep 2009 03:13:47 +0800 (CST) Received: from huawei.com ([172.24.1.6]) by szxga01-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPR00IVHS2Y4V@szxga01-in.huawei.com> for ppsp@ietf.org; Fri, 11 Sep 2009 03:13:46 +0800 (CST) Received: from z-20684ca876cc4 ([200.5.112.178]) by szxml02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPR00JHBS2HYJ@szxml02-in.huawei.com>; Fri, 11 Sep 2009 03:13:36 +0800 (CST) Date: Thu, 10 Sep 2009 16:13:41 -0300 From: Ning Zong To: Yong Lucy , "''Schmidt, Christian 1. (NSN - D" , 'ext zhangyunfei' , "ppsp@ietf.org" Message-id: <0KPR00JHFS2JYJ@szxml02-in.huawei.com> MIME-version: 1.0 X-Mailer: Foxmail 5.0 [en] Content-type: multipart/alternative; boundary="Boundary_(ID_mEYulLsBgiLzWZvWp/6Cmg)" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 19:13:30 -0000 This is a multi-part message in MIME format. --Boundary_(ID_mEYulLsBgiLzWZvWp/6Cmg) Content-type: text/plain; charset=gb2312 Content-transfer-encoding: base64 SGksIEx1Y3ksDQoNClllcywgd2Ugd2lsbCBtYWtlIHRoaW5ncyBtb3JlIGNsZWFyIGJhc2VkIG9u IGxpc3QgZGlzY3Vzc2lvbiwgdGhhbmsgeW91Lg0KDQpDdXJyZW50IHNjb3BlIG9mIFBQU1AgZG9l c24ndCBpbmNsdWRlIGNvbW11bmljYXRpb24gYmV0d2VlbiBQUFNQIHRyYWNrZXJzLiBBcyBhIHBv dGVudGlhbCBmdXJ0aGVyIHN0dWR5LCB0aGUgY29tbXVuaWNhdGlvbiBiZXR3ZWVuIFBQU1AgdHJh 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--Boundary_(ID_mEYulLsBgiLzWZvWp/6Cmg)-- From ping@pingpan.org Thu Sep 10 12:37:05 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 39A4E3A699F for ; Thu, 10 Sep 2009 12:37:05 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.863 X-Spam-Level: X-Spam-Status: No, score=-4.863 tagged_above=-999 required=5 tests=[AWL=-0.371, BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, HTML_FONT_FACE_BAD=0.884, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, RCVD_IN_DNSWL_MED=-4] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fXmY9jGZkc1t for ; Thu, 10 Sep 2009 12:37:02 -0700 (PDT) Received: from exprod7og110.obsmtp.com (exprod7og110.obsmtp.com [64.18.2.173]) by core3.amsl.com (Postfix) with SMTP id F032B3A6A84 for ; Thu, 10 Sep 2009 12:37:01 -0700 (PDT) Received: from source ([209.85.222.174]) by exprod7ob110.postini.com ([64.18.6.12]) with SMTP ID DSNKSqlVcUlb9efLW7amtZ9n5jbu9aP5y2wr@postini.com; Thu, 10 Sep 2009 12:37:38 PDT Received: by pzk4 with SMTP id 4so327157pzk.22 for ; Thu, 10 Sep 2009 12:37:21 -0700 (PDT) MIME-Version: 1.0 Received: by 10.143.20.39 with SMTP id x39mr196345wfi.213.1252611441204; Thu, 10 Sep 2009 12:37:21 -0700 (PDT) In-Reply-To: <0KPR00JXORFEYJ@szxml02-in.huawei.com> References: <0KPR00JXORFEYJ@szxml02-in.huawei.com> From: Ping Pan Date: Thu, 10 Sep 2009 12:37:01 -0700 Message-ID: <22d04a930909101237m3b9d131ex58917cc1d6eb6e14@mail.gmail.com> To: Ning Zong Content-Type: multipart/alternative; boundary=00504502cbeffea09404733e53ec Cc: "ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 19:37:05 -0000 --00504502cbeffea09404733e53ec Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Ning, We are in agreement here. So, you have listed three objectives for PPSP: 1. Standard interface to CDN/Cache 2. Enable media providers to stream content through standard interfaces 3. Help the service providers to manage their network/links better. So, curious, does it require the end users to run PPSP as well? The problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems to assume that is the case. (If I am not mistaken, all the "proprietary protocols" listed in Section 3.1 are client P2P applications). If yes, you have a wide scope of non-technical issues to deal with. If no, then you need to make it clear in the documents. Thanks for clarification. Ping 2009/9/10 Ning Zong > Hi, Ping, > > Thank you for your comments, please see in-line. > > ------------------------------ > Ning, > > I'd think that it is very important to emphasis the target users of the > work, which has been quoted as "intelligent endpoints, caches, content > distribution network nodes, and/or other edge devices." > > [Ning Zong] This is a good suggestion. > > If possible, I would hope that further specification, clarification and > constraints to be added in one of the documents. > > The reasoning is that, if the work is to enable further proliferation of > P2P clients within the networks, then the WG needs to address issues > including security, privacy and copyrights extensively. This may be above > and beyond technology, and is probably outside the scope of PPSP. > > On the other hand, if the work is to enable more efficient streaming > content distribtution within a controlled environment by leveraging > mechanisms such as tracker management and chuck discovery, then the work = is > well understood, and can be clearly defined, specified and experimented i= n > the near future. > > [Ning Zong] If I understand your question correctly, this is related to t= he > incentives of PPSP work. The clarification of incentives are further > provided in problem statement. IMO, the second point in your comments is > closer to current intention of PPSP. To be brief, the intention include > (maybe not limited to): 1) enable more efficient streaming to integrate 3= rd > party devices, e.g. cache/CDN nodes; 2) enable streaming vendors to > accomplish content distribution via some standard API, thus reduce > the time-to-market and maybe cost, we hope; 3) enable ISPs to > construct standard streaming platform to run content provisioning service= s. > > 2 cents, > > - Ping > > 2009/9/10 Ning Zong > >> Hi, Lucy >> >> The participating entities in the first paragraph include both peers and >> trackers in P2P streaming systems. In second paragraph, we discuss the r= oles >> of trackers - assuming that people know the basic meaning of peers. >> Formal definitions of PPSP peers and PPSP trackers are defined in Proble= m >> Statement Draft. >> >> BR, >> Ning Zong >> >> ------------------------------ >> >> Hi YunFei and Christian, >> >> >> >> One clarification: =E2=80=9Cparticipating entities=E2=80=9D listed in th= e text are the >> peer in P2P streaming systems, is that right? Thus, =E2=80=9CPPSP=E2=80= =9D trackers are >> another participator in the systems. Suggest stating that clearly in th= e >> first paragraph. >> >> >> >> Cheers, >> >> Lucy >> >> >> ------------------------------ >> >> *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf >> Of *Schmidt, Christian 1. (NSN - DE/Munich) >> *Sent:* Thursday, September 10, 2009 3:03 AM >> *To:* ext zhangyunfei; ppsp@ietf.org >> *Subject:* Re: [ppsp] ppsp charter discussion >> >> >> >> Hi Yunfei, >> >> after reading your charter proposal, a text proposal and 2 questions for >> clarifications. >> >> >> >> Best Regards >> >> Christian Schmidt >> >> >> >> >> >> >> >> Proposed new text for more transparency in main description: >> >> Old text: >> >> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >> chartered to develop standard signaling protocols (called PPSP protocols= ) >> for multiple types of entities (e.g. intelligent endpoints, caches, cont= ent >> distribution network nodes, and/or other edge devices) to participate in= P2P >> streaming systems in both fixed and mobile Internet. >> >> >> PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling p= rotocol >> between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D= , and the PPSP peer protocol =E2=80=93 a >> signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker ma= intains lists of >> participating PPSP peers, each for a specific channel or streaming file,= and >> answers the queries from PPSP peers for candidate PPSP peers. PPSP peers >> inform their status information to PPSP trackers, exchange their chunk >> availability with other PPSP peers and/or PPSP trackers, and ask other P= PSP >> peers for wanted data. >> >> >> >> New text: >> >> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >> chartered to develop standard signaling protocols (called PPSP >> protocols) for P2P streaming systems in both fixed and mobile Internet. >> Participating entities could be intelligent endpoints, caches, content >> distribution network nodes, and/or other edge devices. >> >> >> >> For a specific channel or streaming file, a PPSP tracker maintains lists >> of particiating PPSP peers. The PPSP tracker answers queries from PPSP p= eers >> for candidate PPSP peers. PPSP peers provide their status information to >> PPSP trackers, exchange their chunk availability with other PPSP peers >> and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP >> protocols include the PPSP tracker protocol =E2=80=93 a signaling protoc= ol between >> =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and th= e PPSP peer protocol =E2=80=93 a signaling >> protocol among =E2=80=9CPPSP peers=E2=80=9D. >> >> >> >> Architectural survey >> >> 3. An "architectural survey" document explaining the current P2P streami= ng >> architectures, in particular tracker-based P2P streaming, and key issues= in >> best practice. >> >> It is good to have a description of the current P2P streaming >> architecture. What is missing is the relation to the PPSP work. Will it >> contain a proposal for the PPSP architecture? >> >> >> >> Usage document >> >> 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols defin= ed above, along >> with existing IETF protocols, such as RELAOD, ALTO and RTSP, can >> inter-operate; and how they may be integrated together to produce comple= te >> P2P streaming systems. >> >> This sounds more like a "interop document". Was this the intention? >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> ------------------------------ >> >> *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf >> Of *ext zhangyunfei >> *Sent:* Thursday, September 10, 2009 8:24 AM >> *To:* ppsp@ietf.org >> *Subject:* [ppsp] ppsp charter discussion >> >> ** >> >> *Dear all,* >> >> * The following is the modified version of PPSP charter(An early >> version was published in the IETF PPSP wiki page).Please review it and a= ny >> comments and suggestions are highly appreciated.* >> >> >> >> * BR* >> >> * Yunfei* >> >> *--------------------------------------------------------* >> >> *Description of PPSP Working Group:* >> >> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >> chartered to develop standard signaling protocols (called PPSP protocols= ) >> for multiple types of entities (e.g. intelligent endpoints, caches, cont= ent >> distribution network nodes, and/or other edge devices) to participate in= P2P >> streaming systems in both fixed and mobile Internet. >> >> >> PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling p= rotocol >> between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D= , and the PPSP peer protocol =E2=80=93 a >> signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker ma= intains lists of >> participating PPSP peers, each for a specific channel or streaming file,= and >> answers the queries from PPSP peers for candidate PPSP peers. PPSP peers >> inform their status information to PPSP trackers, exchange their chunk >> availability with other PPSP peers and/or PPSP trackers, and ask other P= PSP >> peers for wanted data. >> >> >> >> This WG's primary tasks are to produce: >> 1. A =E2=80=9Cproblem statement=E2=80=9D document describing the problem= s, incentives, and >> scope of developing the PPSP protocols, as well as common terminologies = and >> concepts. >> >> >> >> 2. A =E2=80=9Crequirements=E2=80=9D document listing the requirements on= the designed PPSP >> protocols (e.g., general functionality and performance requirements of P= PSP >> protocols or basic types of information that PPSP protocols should >> communicate to facilitate P2P streaming). >> >> >> 3. An "architectural survey" document explaining the current P2P streami= ng >> architectures, in particular tracker-based P2P streaming, and key issues= in >> best practice. >> >> >> 4. A proposed standard defining the PPSP peer protocol. This protocol wi= ll >> define how PPSP peers advertise chunk availability. The protocol will al= so >> define the requests and responses of chunks among PPSP peers. >> >> >> >> 5. A proposed standard defining the PPSP tracker protocol. This protocol >> will define how PPSP peers inform and request information from PPSP trac= kers >> and how PPSP trackers reply to the requests. >> >> >> >> 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols defin= ed above, along >> with existing IETF protocols, such as RELAOD, ALTO and RTSP, can >> inter-operate; and how they may be integrated together to produce comple= te >> P2P streaming systems. >> >> >> >> 7. Optionally a =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile BCP= document) to >> evaluate PPSP with and without Mobile IP support when there are a lot of >> mobile peers in the system. >> >> >> The work planned for the PPSP WG is distinct from, but requires close >> participation with, work in other IETF WGs, particularly P2PSIP, ALTO an= d >> MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO,= and >> MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MM= USIC >> are needed, PPSP will seek to define such extensions and present to the >> respective working groups. >> >> >> The design of PPSP has to consider security/privacy issues. The protocol >> document will contain a complete description of the security/privacy iss= ues >> that PPSP should address. >> >> >> >> The following topics are excluded from this WG's scope: >> 1. Transport mechanisms for data transmission among PPSP peers, e.g. usi= ng >> TCP or UDP, unicast or multicast, etc. >> >> >> 2. Network coding mechanisms in P2P streaming. Network coding may be use= d >> in P2P streaming, but its support is beyond the scope of current charter= . >> >> >> >> 3. Play-out mechanisms including streaming control (e.g., pause, >> fast-forward, and rewind). >> >> >> >> 4. Algorithms that may be different in different deployments (e.g., chun= k >> selection, local storage strategies). >> >> >> >> 5. Research type questions related to P2P streaming. This WG will instea= d >> forward such questions to the IRTF P2PRG or other RG as appropriate. >> Examples include cache management. >> >> *Goals and Milestones:* >> >> Apr 2010 >> >> Working Group Last Call for problem statement >> >> Jun 2010 >> >> Submit problem statement to IESG as Informational document >> >> Aug 2010 >> >> Working Group Last Call for architecture survey >> >> Aug 2010 >> >> Working Group Last Call for requirements >> >> Oct >> >> 2010 >> >> Submit architecture survey to IESG as Informational document >> >> Oct 2010 >> >> Submit requirements to IESG as Informational document >> >> Apr 2011 >> >> Working Group Last Call for PPSP peer protocol >> >> Apr >> >> 2011 >> >> Working Group Last Call for PPSP tracker protocol >> >> Aug 2011 >> >> Submit PPSP peer protocol to IESG as Proposed Standard >> >> Aug 2011 >> >> Submit PPSP tracker protocol to IESG as Proposed Standard >> >> Nov 2011 >> >> Working Group Last Call of usage document >> >> Nov 2011 >> >> Working Group Last Call of mobility BCP document >> >> Jan 2012 >> >> Submit usage document to IESG as Informational document >> >> Jan 2012 >> >> Submit mobility BCP document to IESG as Informational document >> >> Apr 2012 >> >> Dissolve or re-charter >> >> >> >> >> ------------------------------ >> >> zhangyunfei >> >> 2009-09-10 >> ------------------------------ >> >> _______________________________________________ >> ppsp mailing list >> ppsp@ietf.org >> https://www.ietf.org/mailman/listinfo/ppsp >> >> > ------------------------------ > --00504502cbeffea09404733e53ec Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Ning,

We are in agreement here.=C2=A0So, you have listed three=C2=A0object= ives=C2=A0for PPSP:

1.= Standard interface to CDN/Cache
2. Enable med= ia providers to stream content through standard interfaces
3. Help the servic= e providers to manage their network/links better.
<= span class=3D"Apple-style-span" style=3D"font-size: small;">
So, curious, does it require the end users to run = PPSP as well?=C2=A0The problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems to assu= me that is the case. (If I am not mistaken, all the "proprietary proto= cols" listed in Section 3.1 are client P2P applications). If yes, you = have a wide scope of non-technical issues to deal with. If no, then you nee= d to make it clear in the documents.

=
Thanks for clarification.

= Ping


2009/9/10 Ning Zong &l= t;zongning@huawei.com>=
Hi, Ping,
=C2=A0
Thank you for your comments, please see in-line.
=C2=A0
Ning,

I'd think that it is very important to emphasis the target users o= f the=20 work, which has been quoted as "intelligent endp= oints, caches, content distribution=20 network nodes, and/or other edge devices."
=C2=A0
[Ning Zong] This is a good=20 suggestion.

If possible, I would hope that further specification, clarification an= d=20 constraints to be added in one of the documents.

The reasoning is that, if the work is to enable=20 further=C2=A0proliferation=C2=A0of P2P clients within the networks, then th= e WG=20 needs to address issues including security, privacy and copyrights extensiv= ely.=20 This may be above and beyond technology, and=C2=A0is probably outside the s= cope=20 of PPSP.

On the other hand, if the work is to enable more efficient streaming= =20 content distribtution within a controlled=C2=A0environment by leveraging=20 mechanisms such as tracker management and chuck discovery, then the work is= well=20 understood, and can be clearly defined, specified and experimented in the n= ear=20 future.
=C2=A0
[Ning Zong] If I understand your question correctly, this is rel= ated to the=20 incentives of PPSP work. The clarification of incentives are further provid= ed in=20 problem statement. IMO, the second point in your comments is closer=20 to=C2=A0current intention of PPSP. To be brief, the intention include (mayb= e not=20 limited to): 1) enable more efficient streaming to integrate=C2=A03rd party= =20 devices, e.g. cache/CDN nodes; 2)=C2=A0enable=C2=A0streaming vendors=C2=A0t= o=20 accomplish=C2=A0content distribution via some standard API, thus reduce=20 the=C2=A0time-to-market and maybe cost, we hope; 3) enable ISPs to=20 construct=C2=A0standard streaming platform to run content provisioning=20 services.

2 cents,

- Ping

2009/9/10 Ning Zong <zongning@huawei.com&= gt;
Hi, Lucy
=C2=A0
The participating entities in the first paragraph include both peers= and=20 trackers in P2P streaming systems. In second paragraph, we discuss the ro= les=20 of=C2=A0trackers -=C2=A0assuming that people know the basic meaning of=20 peers.
Formal definitions of PPSP peers and PPSP trackers are defined in Pr= oblem=20 Statement Draft.
=C2=A0
BR,
Ning Zong
=C2=A0

Hi YunFei and=20 Christian,

=C2=A0

One clarification:=20 =E2=80=9Cparticipating entities=E2=80=9D listed in the text are the peer = in P2P streaming=20 systems, is that right? Thus, =E2=80=9CPPSP=E2=80=9D trackers are another= participator in the=20 systems. =C2=A0Suggest stating that clearly in the first=20 paragraph.

=C2=A0

Cheers,

Lucy

=C2=A0

From: ppsp-bounces@ietf.org= =20 [mailto:ppsp-b= ounces@ietf.org] On=20 Behalf Of Schmidt, Christian 1. (NSN - DE/Munich)
Sent: Thursday, September 10, 2009 3:= 03=20 AM
To: ext zhangyunfei;= ppsp@ietf.org
Subject: Re: [ppsp] ppsp chart= er=20 discussion

=C2=A0

Hi=20 Yunfei,

after reading your=20 charter proposal, a text proposal and 2 questions for=20 clarifications.

= =C2=A0

Best=20 Regards

Christian=20 Schmidt

= =C2=A0

= =C2=A0

= =C2=A0

Proposed new=20 text=C2=A0for more transparency in main description:

Old=20 text:

The=20 Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartere= d to=20 develop standard signaling protocols (called PPSP protocols) for multiple= =20 types of entities (e.g. intelligent endpoints, caches, content distributi= on=20 network nodes, and/or other edge devices) to participate in P2P streaming= =20 systems in both fixed and mobile Internet.


PPSP protocols include the=20 PPSP tracker protocol =E2=80=93 a signaling protocol between =E2=80=9CPPS= P trackers=E2=80=9D and =E2=80=9CPPSP=20 peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling protocol= among =E2=80=9CPPSP peers=E2=80=9D.=20 A PPSP tracker maintains lists of participating PPSP peers, each for a=20 specific channel or streaming file, and answers the queries from PPSP pee= rs=20 for candidate PPSP peers. PPSP peers inform their status information to P= PSP=20 trackers, exchange their chunk availability with other PPSP peers and/or = PPSP=20 trackers, and ask other PPSP peers for wanted data.

=C2=A0

New=C2=A0text:<= /p>

The=20 Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartere= d to=20 develop standard signaling protocols (called PPSP protocols)=C2=A0for P2P= =20 streaming systems in both fixed and mobile Internet. Participating entiti= es=20 could be intelligent endpoints, caches, content distribution network node= s,=20 and/or other edge devices.

= =C2=A0

For a=20 specific channel or streaming file, a PPSP tracker maintains lists of=20 particiating PPSP peers. The PPSP tracker answers queries from PPSP peers= for=20 candidate PPSP peers. PPSP peers=C2=A0provide their status information to= PPSP=20 trackers, exchange their chunk availability with other PPSP peers and/or = PPSP=20 trackers, and ask other PPSP peers for wanted data. PPSP protocols includ= e the=20 PPSP tracker protocol =E2=80=93 a signaling protocol between =E2=80=9CPPS= P trackers=E2=80=9D and =E2=80=9CPPSP=20 peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling protocol= among =E2=80=9CPPSP=20 peers=E2=80=9D.<= span style=3D"color:black;font-family:'Courier New'">

=C2=A0

Architectural=20 survey

3. An "architectural=20 survey" document explaining the current P2P streaming architectures,= in=20 particular tracker-based P2P streaming, and key issues in best=20 practice.

It is good to=20 have a description of the current P2P streaming architecture. What is mis= sing=20 is the relation to the PPSP work. Will it contain a proposal for=C2=A0the= PPSP=20 architecture?

=C2=A0

Usage=20 document

6. A =E2=80=9C= usage=20 document=E2=80=9D explaining how the protocols defined above, along with = existing IETF=20 protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they= may=20 be integrated together to produce complete P2P streaming=20 systems.

This sounds=20 more like a "interop document". Was this the intention?<= /font>

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

F= rom:=20 ppsp-bounces@i= etf.org=20 [mailto:ppsp-b= ounces@ietf.org] On=20 Behalf Of ext zhangyunfei
Sent: Thursday, September 10, 2009 8:24=20 AM
To: ppsp@ietf.org
Subject: [ppsp] ppsp charter=20 discussion

=C2=A0


Dear=20 all,

=C2=A0=C2=A0=20 The following is the modified version of PPSP charter(An early version wa= s=20 published in the IETF PPSP wiki page).Please review it and any comments a= nd=20 suggestions are highly appreciated.

=C2=A0

=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20 BR

=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20 Yunfei

----------------------= ----------------------------------

Description=20 of PPSP Working Group:

The Peer-to-Peer (P2P)=20 Streaming Protocol working group (PPSP WG) is chartered to develop standa= rd=20 signaling protocols (called PPSP protocols) for multiple types of entitie= s=20 (e.g. intelligent endpoints, caches, content distribution network nodes,= =20 and/or other edge devices) to participate in P2P streaming systems in bot= h=20 fixed and mobile Internet.


PPSP protocols include=20 the PPSP tracker protocol =E2=80=93 a signaling protocol between =E2=80= =9CPPSP trackers=E2=80=9D and=20 =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a sign= aling protocol among =E2=80=9CPPSP=20 peers=E2=80=9D. A PPSP tracker maintains lists of participating PPSP peer= s, each for a=20 specific channel or streaming file, and answers the queries from PPSP pee= rs=20 for candidate PPSP peers. PPSP peers inform their status information to P= PSP=20 trackers, exchange their chunk availability with other PPSP peers and/or = PPSP=20 trackers, and ask other PPSP peers for wanted data.

=C2=A0

= This WG= 9;s primary tasks=20 are to produce:
1. A =E2=80=9Cproblem statement=E2=80=9D document desc= ribing the problems,=20 incentives, and scope of developing the PPSP protocols, as well as common= =20 terminologies and concepts.

=C2=A0

2. A =E2=80=9Crequirements=E2=80=9D=20 document listing the requirements on the designed PPSP protocols (e.g.,= =20 general functionality and performance requirements of PPSP protocols or b= asic=20 types of information that PPSP protocols should communicate to facilitate= P2P=20 streaming).


3. An "architectural=20 survey" document explaining the current P2P streaming architectures,= in=20 particular tracker-based P2P streaming, and key issues in best=20 practice.

=
4. A p= roposed standard=20 defining the PPSP peer protocol. This protocol will define how PPSP peers= =20 advertise chunk availability. The protocol will also define the requests = and=20 responses of chunks among PPSP peers.

=C2=A0

= 5. A propo= sed standard=20 defining the PPSP tracker protocol. This protocol will define how PPSP pe= ers=20 inform and request information from PPSP trackers and how PPSP trackers r= eply=20 to the requests.

=C2=A0

6. A =E2=80=9Cusage document=E2=80=9D=20 explaining how the protocols defined above, along with existing IETF=20 protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they= may=20 be integrated together to produce complete P2P streaming=20 systems.

=C2=A0

7. Optionally a =E2=80=9Dmobile=20 usage document=E2=80=9D (PPSP mobile BCP document) to evaluate PPSP with = and without=20 Mobile IP support when there are a lot of mobile peers in the=20 system.


The work planned for=20 the PPSP WG is distinct from, but requires close participation with, work= in=20 other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes= that=20 it cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP=20 determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will = seek=20 to define such extensions and present to the respective working=20 groups.


The design of PPSP has=20 to consider security/privacy issues. The protocol document will contain a= =20 complete description of the security/privacy issues that PPSP should=20 address.

=C2=A0

The following topics are=20 excluded from this WG's scope:
1. Transport mechanisms for data=20 transmission among PPSP peers, e.g. using TCP or UDP, unicast or multicas= t,=20 etc.


2. Network coding=20 mechanisms in P2P streaming. Network coding may be used in P2P streaming,= but=20 its support is beyond the scope of current charter.

=C2=A0

3. Play-out mechanisms=20 including streaming control (e.g., pause, fast-forward, and=20 rewind).

=C2=A0

4. Algorithms that may be=20 different in different deployments (e.g., chunk selection, local storage= =20 strategies).

=C2=A0

5. Research type questions=20 related to P2P streaming. This WG will instead forward such questions to = the=20 IRTF P2PRG or other RG as appropriate. Examples include cache=20 management.

Goals=20 and Milestones:

<= /tr>

Apr=20 2010

Working Group Last=20 Call for problem statement

Jun=20 2010

Submit problem=20 statement to IESG as Informational document

Aug=20 2010

Working Group Last=20 Call for architecture survey

Aug=20 2010

Working Group Last=20 Call for requirements

Oct

2010

Submit architecture=20 survey to IESG as Informational document

Oct=20 2010

Submit requirements=20 to IESG as Informational document

Apr=20 2011

Working Group Last=20 Call for PPSP peer protocol

Apr

2011

Working Group Last=20 Call for PPSP tracker protocol

Aug=20 2011

Submit PPSP peer=20 protocol to IESG as Proposed Standard

Aug=20 2011

Submit PPSP tracker=20 protocol to IESG as Proposed Standard

Nov=20 2011

Working Group Last=20 Call of usage document

Nov=20 2011

Working Group Last=20 Call of mobility BCP document

Jan=20 2012

Submit usage=20 document to IESG as Informational document

Jan=20 2012

Submit mobility BCP=20 document to IESG as Informational document

Apr=20 2012

Dissolve or=20 re-charter

=C2=A0

=C2=A0

zhangyunfei

2009-09-10


_______________________________________________
ppsp mailing= =20 list
ppsp@ietf.org<= /a>
https://www.ietf.org/mailman/listinfo/ppsp



--00504502cbeffea09404733e53ec-- From zongning@huawei.com Thu Sep 10 13:15:07 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id CC9DD28C17F for ; Thu, 10 Sep 2009 13:15:06 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -97.871 X-Spam-Level: X-Spam-Status: No, score=-97.871 tagged_above=-999 required=5 tests=[AWL=-0.613, BAYES_00=-2.599, FH_RELAY_NODNS=1.451, HELO_MISMATCH_COM=0.553, HTML_FONT_FACE_BAD=0.884, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, MIME_BASE64_TEXT=1.753, RDNS_NONE=0.1, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vjqKUg6Bo4D4 for ; Thu, 10 Sep 2009 13:15:03 -0700 (PDT) Received: from szxga01-in.huawei.com (unknown [119.145.14.64]) by core3.amsl.com (Postfix) with ESMTP id 11D373A6853 for ; Thu, 10 Sep 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"ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 20:15:07 -0000 This is a multi-part message in MIME format. --Boundary_(ID_r0kshKX7kIcnyYIQKKyEmA) Content-type: text/plain; charset=gb2312 Content-transfer-encoding: base64 SGksIFBpbmcsDQoNCkVuZCB1c2VycyB3aWxsIHJ1biBQUFNQLiBBcyBhZGRyZXNzZWQgaW4gY2hh cnRlciwgUFBTUCBwcm90b2NvbHMgY291bGQgcnVuIG9uIG11bHRpcGxlIGVudGl0aWVzIHN1Y2gg YXMgZW5kIHVzZXJzLCBjYWNoZXMsIENETiBub2RlcywgZXRjLg0KSGVyZSB3ZSB0YWxrIGFib3V0 IHRoZSBzdGFuZGFyZCBwcm90b2NvbHMgcnVubmluZyBvbiBlbmQgdXNlcnMuIFdoYXQgZG8geW91 IG1lYW4gYnkgbm9uLXRlY2huaWNhbCBpc3N1ZXM/IElmIHlvdSBtZWFuIHNlY3VyaXR5LCBwcml2 YWN5IGFuZCBjb3B5cmlnaHRzIGlzc3VlcywgSSB0aGluayBub3Qgb25seSBQUFNQLCBidXQgc29t 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SMTP id u40mr203243wfh.178.1252619763186; Thu, 10 Sep 2009 14:56:03 -0700 (PDT) In-Reply-To: <0KPR00LQ0UX6ED@szxml01-in.huawei.com> References: <0KPR00LQ0UX6ED@szxml01-in.huawei.com> From: Ping Pan Date: Thu, 10 Sep 2009 14:55:43 -0700 Message-ID: <22d04a930909101455v3df5ec7dq3241e6aa5e373f9b@mail.gmail.com> To: Ning Zong Content-Type: multipart/alternative; boundary=00504502cc9f05fdb204734044ed Cc: "ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 21:55:38 -0000 --00504502cc9f05fdb204734044ed Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Ning, Thanks for the clarification. Here is my main concern: currently, PPSP is positioned as yet another streaming protocol to the end users. IMHO, the end users can care less where the traffic are streaming from so long it's convenient, safe and have reasonable QoE. Do we need another streaming protocol to do this? One may argue the advantages in P2P. But, to many, PPSP is actually endorsing the following: - I need to install a special software from the ASP's, which may use my local CPU and storage for P2P operation, and do some other things that I don't know about. - The software enables me to watch some movies from the peers, who may b= e chased by the lawyers from some media companies. - On top of that, the service networks, especially, those who have to pa= y for the expensive backhaul links, may be sick of the traffic volume, and= may install DPI boxes at every possible intersection to drop my video stream traffic (here goes my QoE). In short, I don't think it's wise to address all of the above in one WG, on= e architecture or one protocol. Rather, it would be nice to focus on what P2P streaming is good at, use it to solve a couple of real problems, and move o= n to the next. We must not ignore the advancement of the following in P2P streaming: - Cost efficiency: I saw a presentation from last IETF's P2PRG (from Ric= h Woundy?), where it takes a $3,000 PC to support 5,000 concurrent streams= . That's cheap! - Simplicity: it never occurred to me that why we must have storage servers, called CDN, sitting all over the place, while some simple cachi= ng would be sufficient. In PPlive's Sigcomm paper, it mentioned of using 8/= 12G of Flash only, and no harddrive. (This may help answering some copyright concerns). - Portability: people may argue uplink vs. inter-domain locality. But al= l service providers need to do is inserting a few P2P edge caching boxes i= n the network. If more locality is needed, add another one. Chunk discover= y and tracker manager are perfect for this. This is the line of reasoning I had: why not narrow the scope of PPSP, and solve the caching problem first? Once again, I don't think PPSP needs to deal with end users for now. In fact, by forcing an open standard, you are taking away the leverage from th= e existing P2P media companies, including PPlive and PPstream (as mentioned i= n another draft of yours :-)). Nobody wins! 0.5 cents, - Ping 2009/9/10 Ning Zong > Hi, Ping, > > End users will run PPSP. As addressed in charter, PPSP protocols could ru= n > on multiple entities such as end users, caches, CDN nodes, etc. > Here we talk about the standard protocols running on end users. What do y= ou > mean by non-technical issues? If you mean security, privacy and copyright= s > issues, I think not only PPSP, but some other BoF/WGs have same issues. Y= ou > are perfectly right, they will be not in the working scope (but need some > considerations during the WG work). > > BR, > Ning Zong > > ------------------------------ > Ning, > > We are in agreement here. So, you have listed three objectives for PPSP: > > 1. Standard interface to CDN/Cache > 2. Enable media providers to stream content through standard interfaces > 3. Help the service providers to manage their network/links better. > > So, curious, does it require the end users to run PPSP as well? The > problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems > to assume that is the case. (If I am not mistaken, all the "proprietary > protocols" listed in Section 3.1 are client P2P applications). If yes, yo= u > have a wide scope of non-technical issues to deal with. If no, then you n= eed > to make it clear in the documents. > > Thanks for clarification. > > Ping > > > 2009/9/10 Ning Zong > >> Hi, Ping, >> >> Thank you for your comments, please see in-line. >> >> ------------------------------ >> Ning, >> >> I'd think that it is very important to emphasis the target users of the >> work, which has been quoted as "intelligent endpoints, caches, content >> distribution network nodes, and/or other edge devices." >> >> [Ning Zong] This is a good suggestion. >> >> If possible, I would hope that further specification, clarification and >> constraints to be added in one of the documents. >> >> The reasoning is that, if the work is to enable further proliferation of >> P2P clients within the networks, then the WG needs to address issues >> including security, privacy and copyrights extensively. This may be abov= e >> and beyond technology, and is probably outside the scope of PPSP. >> >> On the other hand, if the work is to enable more efficient streaming >> content distribtution within a controlled environment by leveraging >> mechanisms such as tracker management and chuck discovery, then the work= is >> well understood, and can be clearly defined, specified and experimented = in >> the near future. >> >> [Ning Zong] If I understand your question correctly, this is related to >> the incentives of PPSP work. The clarification of incentives are further >> provided in problem statement. IMO, the second point in your comments is >> closer to current intention of PPSP. To be brief, the intention include >> (maybe not limited to): 1) enable more efficient streaming to integrate = 3rd >> party devices, e.g. cache/CDN nodes; 2) enable streaming vendors to >> accomplish content distribution via some standard API, thus reduce >> the time-to-market and maybe cost, we hope; 3) enable ISPs to >> construct standard streaming platform to run content provisioning servic= es. >> >> 2 cents, >> >> - Ping >> >> 2009/9/10 Ning Zong >> >>> Hi, Lucy >>> >>> The participating entities in the first paragraph include both peers an= d >>> trackers in P2P streaming systems. In second paragraph, we discuss the = roles >>> of trackers - assuming that people know the basic meaning of peers. >>> Formal definitions of PPSP peers and PPSP trackers are defined in Probl= em >>> Statement Draft. >>> >>> BR, >>> Ning Zong >>> >>> ------------------------------ >>> >>> Hi YunFei and Christian, >>> >>> >>> >>> One clarification: =E2=80=9Cparticipating entities=E2=80=9D listed in t= he text are the >>> peer in P2P streaming systems, is that right? Thus, =E2=80=9CPPSP=E2=80= =9D trackers are >>> another participator in the systems. Suggest stating that clearly in t= he >>> first paragraph. >>> >>> >>> >>> Cheers, >>> >>> Lucy >>> >>> >>> ------------------------------ >>> >>> *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf >>> Of *Schmidt, Christian 1. (NSN - DE/Munich) >>> *Sent:* Thursday, September 10, 2009 3:03 AM >>> *To:* ext zhangyunfei; ppsp@ietf.org >>> *Subject:* Re: [ppsp] ppsp charter discussion >>> >>> >>> >>> Hi Yunfei, >>> >>> after reading your charter proposal, a text proposal and 2 questions fo= r >>> clarifications. >>> >>> >>> >>> Best Regards >>> >>> Christian Schmidt >>> >>> >>> >>> >>> >>> >>> >>> Proposed new text for more transparency in main description: >>> >>> Old text: >>> >>> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >>> chartered to develop standard signaling protocols (called PPSP protocol= s) >>> for multiple types of entities (e.g. intelligent endpoints, caches, con= tent >>> distribution network nodes, and/or other edge devices) to participate i= n P2P >>> streaming systems in both fixed and mobile Internet. >>> >>> >>> PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling = protocol >>> between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80= =9D, and the PPSP peer protocol =E2=80=93 a >>> signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker m= aintains lists of >>> participating PPSP peers, each for a specific channel or streaming file= , and >>> answers the queries from PPSP peers for candidate PPSP peers. PPSP peer= s >>> inform their status information to PPSP trackers, exchange their chunk >>> availability with other PPSP peers and/or PPSP trackers, and ask other = PPSP >>> peers for wanted data. >>> >>> >>> >>> New text: >>> >>> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >>> chartered to develop standard signaling protocols (called PPSP >>> protocols) for P2P streaming systems in both fixed and mobile Internet. >>> Participating entities could be intelligent endpoints, caches, content >>> distribution network nodes, and/or other edge devices. >>> >>> >>> >>> For a specific channel or streaming file, a PPSP tracker maintains list= s >>> of particiating PPSP peers. The PPSP tracker answers queries from PPSP = peers >>> for candidate PPSP peers. PPSP peers provide their status information t= o >>> PPSP trackers, exchange their chunk availability with other PPSP peers >>> and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP >>> protocols include the PPSP tracker protocol =E2=80=93 a signaling proto= col between >>> =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and t= he PPSP peer protocol =E2=80=93 a signaling >>> protocol among =E2=80=9CPPSP peers=E2=80=9D. >>> >>> >>> >>> Architectural survey >>> >>> 3. An "architectural survey" document explaining the current P2P >>> streaming architectures, in particular tracker-based P2P streaming, and= key >>> issues in best practice. >>> >>> It is good to have a description of the current P2P streaming >>> architecture. What is missing is the relation to the PPSP work. Will it >>> contain a proposal for the PPSP architecture? >>> >>> >>> >>> Usage document >>> >>> 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols defi= ned above, along >>> with existing IETF protocols, such as RELAOD, ALTO and RTSP, can >>> inter-operate; and how they may be integrated together to produce compl= ete >>> P2P streaming systems. >>> >>> This sounds more like a "interop document". Was this the intention? >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> ------------------------------ >>> >>> *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf >>> Of *ext zhangyunfei >>> *Sent:* Thursday, September 10, 2009 8:24 AM >>> *To:* ppsp@ietf.org >>> *Subject:* [ppsp] ppsp charter discussion >>> >>> ** >>> >>> *Dear all,* >>> >>> * The following is the modified version of PPSP charter(An early >>> version was published in the IETF PPSP wiki page).Please review it and = any >>> comments and suggestions are highly appreciated.* >>> >>> >>> >>> * BR* >>> >>> * Yunfei* >>> >>> *--------------------------------------------------------* >>> >>> *Description of PPSP Working Group:* >>> >>> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >>> chartered to develop standard signaling protocols (called PPSP protocol= s) >>> for multiple types of entities (e.g. intelligent endpoints, caches, con= tent >>> distribution network nodes, and/or other edge devices) to participate i= n P2P >>> streaming systems in both fixed and mobile Internet. >>> >>> >>> PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling = protocol >>> between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80= =9D, and the PPSP peer protocol =E2=80=93 a >>> signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker m= aintains lists of >>> participating PPSP peers, each for a specific channel or streaming file= , and >>> answers the queries from PPSP peers for candidate PPSP peers. PPSP peer= s >>> inform their status information to PPSP trackers, exchange their chunk >>> availability with other PPSP peers and/or PPSP trackers, and ask other = PPSP >>> peers for wanted data. >>> >>> >>> >>> This WG's primary tasks are to produce: >>> 1. A =E2=80=9Cproblem statement=E2=80=9D document describing the proble= ms, incentives, >>> and scope of developing the PPSP protocols, as well as common terminolo= gies >>> and concepts. >>> >>> >>> >>> 2. A =E2=80=9Crequirements=E2=80=9D document listing the requirements o= n the designed >>> PPSP protocols (e.g., general functionality and performance requirement= s of >>> PPSP protocols or basic types of information that PPSP protocols should >>> communicate to facilitate P2P streaming). >>> >>> >>> 3. An "architectural survey" document explaining the current P2P >>> streaming architectures, in particular tracker-based P2P streaming, and= key >>> issues in best practice. >>> >>> >>> 4. A proposed standard defining the PPSP peer protocol. This protocol >>> will define how PPSP peers advertise chunk availability. The protocol w= ill >>> also define the requests and responses of chunks among PPSP peers. >>> >>> >>> >>> 5. A proposed standard defining the PPSP tracker protocol. This protoco= l >>> will define how PPSP peers inform and request information from PPSP tra= ckers >>> and how PPSP trackers reply to the requests. >>> >>> >>> >>> 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols defi= ned above, along >>> with existing IETF protocols, such as RELAOD, ALTO and RTSP, can >>> inter-operate; and how they may be integrated together to produce compl= ete >>> P2P streaming systems. >>> >>> >>> >>> 7. Optionally a =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile BC= P document) to >>> evaluate PPSP with and without Mobile IP support when there are a lot o= f >>> mobile peers in the system. >>> >>> >>> The work planned for the PPSP WG is distinct from, but requires close >>> participation with, work in other IETF WGs, particularly P2PSIP, ALTO a= nd >>> MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO= , and >>> MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, M= MUSIC >>> are needed, PPSP will seek to define such extensions and present to the >>> respective working groups. >>> >>> >>> The design of PPSP has to consider security/privacy issues. The protoco= l >>> document will contain a complete description of the security/privacy is= sues >>> that PPSP should address. >>> >>> >>> >>> The following topics are excluded from this WG's scope: >>> 1. Transport mechanisms for data transmission among PPSP peers, e.g. >>> using TCP or UDP, unicast or multicast, etc. >>> >>> >>> 2. Network coding mechanisms in P2P streaming. Network coding may be us= ed >>> in P2P streaming, but its support is beyond the scope of current charte= r. >>> >>> >>> >>> 3. Play-out mechanisms including streaming control (e.g., pause, >>> fast-forward, and rewind). >>> >>> >>> >>> 4. Algorithms that may be different in different deployments (e.g., chu= nk >>> selection, local storage strategies). >>> >>> >>> >>> 5. Research type questions related to P2P streaming. This WG will inste= ad >>> forward such questions to the IRTF P2PRG or other RG as appropriate. >>> Examples include cache management. >>> >>> *Goals and Milestones:* >>> >>> Apr 2010 >>> >>> Working Group Last Call for problem statement >>> >>> Jun 2010 >>> >>> Submit problem statement to IESG as Informational document >>> >>> Aug 2010 >>> >>> Working Group Last Call for architecture survey >>> >>> Aug 2010 >>> >>> Working Group Last Call for requirements >>> >>> Oct >>> >>> 2010 >>> >>> Submit architecture survey to IESG as Informational document >>> >>> Oct 2010 >>> >>> Submit requirements to IESG as Informational document >>> >>> Apr 2011 >>> >>> Working Group Last Call for PPSP peer protocol >>> >>> Apr >>> >>> 2011 >>> >>> Working Group Last Call for PPSP tracker protocol >>> >>> Aug 2011 >>> >>> Submit PPSP peer protocol to IESG as Proposed Standard >>> >>> Aug 2011 >>> >>> Submit PPSP tracker protocol to IESG as Proposed Standard >>> >>> Nov 2011 >>> >>> Working Group Last Call of usage document >>> >>> Nov 2011 >>> >>> Working Group Last Call of mobility BCP document >>> >>> Jan 2012 >>> >>> Submit usage document to IESG as Informational document >>> >>> Jan 2012 >>> >>> Submit mobility BCP document to IESG as Informational document >>> >>> Apr 2012 >>> >>> Dissolve or re-charter >>> >>> >>> >>> >>> ------------------------------ >>> >>> zhangyunfei >>> >>> 2009-09-10 >>> ------------------------------ >>> >>> _______________________________________________ >>> ppsp mailing list >>> ppsp@ietf.org >>> https://www.ietf.org/mailman/listinfo/ppsp >>> >>> >> ------------------------------ >> > > ------------------------------ > --00504502cc9f05fdb204734044ed Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Ning,

Thanks for the clarification.

Here is my main concern: currently, PPSP is positioned as y= et another streaming protocol to the end users.

IMHO, the end users can care less where the traffic are streaming from so l= ong it's=C2=A0convenient,=C2=A0safe and have reasonable QoE. Do we need= another streaming protocol to do this?

One may argue the advantages in P2P. But, to many, PPSP= is actually endorsing the following:
  • I need to install a= special software from the ASP's, which may use my local CPU and storag= e for P2P operation, and do some other things that I don't know about.<= /li>
  • The software enables me to watch some movies from the peers, who may be= chased by the lawyers from some media companies.=C2=A0
  • On top of t= hat, the service networks, especially, those who have to pay for the expens= ive backhaul links, may be sick of the traffic volume, and may install DPI = boxes at every possible intersection to drop my video stream traffic (here = goes my QoE).
In short, I don't think it's wise to address all of= the above in one WG, one architecture or one protocol. Rather, it would be= nice to focus on what P2P streaming is good at, use it to solve a couple o= f real problems, and move on to the next.

We must not ignore the advancement of the following in = P2P streaming:
  • Cost efficiency: I saw a=C2=A0presentation= =C2=A0from last IETF's P2PRG (from Rich Woundy?), where it takes a $3,0= 00 PC to support 5,000 concurrent streams. That's cheap!
  • Simplicity: it never=C2=A0occurred=C2=A0to me that why we must have sto= rage servers, called CDN, sitting all over the place, while some simple cac= hing would be sufficient. In PPlive's Sigcomm paper, it mentioned of us= ing 8/12G of Flash only, and no harddrive. (This may help answering some co= pyright concerns).
  • Portability: people may argue uplink vs. inter-domain=C2=A0locality. Bu= t all service providers need to do is inserting a few P2P edge caching boxe= s in the network. If more locality is needed, add another one. Chunk discov= ery and tracker manager are perfect for this.
This is the line of reasoning I had: why not narrow the sco= pe of PPSP, and solve the caching problem first?

O= nce again, I don't think PPSP needs to deal with end users for now. In = fact, by forcing an open standard, you are taking away the leverage from th= e existing P2P media companies, including PPlive and PPstream (as mentioned= in another draft of yours :-)). Nobody wins!

0.5 cents,

- Ping

2009/9/10 Ning Zong <zongning@huawei.com>
Hi, Ping,
=C2=A0
End users will run PPSP. As addressed in charter, PPSP protocols could= run=20 on multiple entities such as end users, caches, CDN nodes, etc.
Here we=C2=A0talk about the standard protocols running on end users. W= hat=20 do you mean by non-technical issues? If you mean security, privacy and=20 copyrights issues, I think not only PPSP, but some other BoF/WGs=C2=A0have = same=20 issues. You are perfectly right, they will be not in the working scope (but= need=20 some considerations during the WG work).
=C2=A0
BR,
Ning Zong=C2=A0
=C2=A0
Ning,

We are in agreement=20 here.=C2=A0So, you have listed three=C2=A0objectives=C2=A0for=20 PPSP:

1. Standard interface=20 to CDN/Cache
2. Enable media=20 providers to stream content through standard interfaces
3. Help the service=20 providers to manage their network/links better.

So, curious, does it require the end users to run PPSP as well?=C2=A0<= span style=3D"font-size:small">= The problem statement draft=20 (draft-zhang-ppsp-problem-statement-04.txt)=20 seems to assume that is the case. (If I am not mistaken, all the "prop= rietary=20 protocols" listed in Section 3.1 are client P2P applications). If yes,= you have=20 a wide scope of non-technical issues to deal with. If no, then you need to = make=20 it clear in the documents.

Thanks for clarification.

Ping


2009/9/10 Ning Zong <zongning@huawei.com&= gt;
Hi, Ping,
=C2=A0
Thank you for your comments, please see in-line.
=C2=A0
Ning,

I'd think that it is very important to emphasis the target users= of the=20 work, which has been quoted as "intelligent=20 endpoints, caches, content distribution network nodes, and/or other edge= =20 devices."=
=C2=A0
[Ning Zong] This is a good=20 suggestion.

If possible, I would hope that further specification, clarification = and=20 constraints to be added in one of the documents.

The reasoning is that, if the work is to enable=20 further=C2=A0proliferation=C2=A0of P2P clients within the networks, then = the=20 WG needs to address issues including security, privacy and copyrights=20 extensively. This may be above and beyond technology, and=C2=A0is probabl= y=20 outside the scope of PPSP.

On the other hand, if the work is to enable more efficient streaming= =20 content distribtution within a controlled=C2=A0environment by leveraging= =20 mechanisms such as tracker management and chuck discovery, then the work = is=20 well understood, and can be clearly defined, specified and experimented i= n the=20 near future.
=C2=A0
[Ning Zong] If I understand your question correctly, this is related= to=20 the incentives of PPSP work. The clarification of incentives are further= =20 provided in problem statement. IMO, the second point in your comments is= =20 closer to=C2=A0current intention of PPSP. To be brief, the intention incl= ude=20 (maybe not limited to): 1) enable more efficient streaming to=20 integrate=C2=A03rd party devices, e.g. cache/CDN nodes;=20 2)=C2=A0enable=C2=A0streaming vendors=C2=A0to accomplish=C2=A0content=20 distribution via some standard API, thus reduce the=C2=A0time-to-market a= nd=20 maybe cost, we hope; 3) enable ISPs to construct=C2=A0standard streaming= =20 platform to run content provisioning services.

2 cents,

- Ping

2009/9/10 Ning Zong <zongning@huawei.com>
Hi, Lucy
=C2=A0
The participating entities in the first paragraph include both pee= rs=20 and trackers in P2P streaming systems. In second paragraph, we discuss = the=20 roles of=C2=A0trackers -=C2=A0assuming that people know the basic meani= ng of=20 peers.
Formal definitions of PPSP peers and PPSP trackers are defined in= =20 Problem Statement Draft.
=C2=A0
BR,
Ning Zong
=C2=A0

Hi YunFei and=20 Christian,

=C2=A0

One clarification:=20 =E2=80=9Cparticipating entities=E2=80=9D listed in the text are the pee= r in P2P streaming=20 systems, is that right? Thus, =E2=80=9CPPSP=E2=80=9D trackers are anoth= er participator in=20 the systems. =C2=A0Suggest stating that clearly in the first=20 paragraph.

=C2=A0

Cheers,

Lucy

=C2=A0

=C2=A0

Hi=20 Yunfei,

after reading your=20 charter proposal, a text proposal and 2 questions for=20 clarifications.= =

= =C2=A0

Best=20 Regards

Christian=20 Schmidt

= =C2=A0

= =C2=A0

= =C2=A0

Proposed=20 new text=C2=A0for more transparency in main description:<= font face=3D"Arial" color=3D"blue" size=3D"2">

Old=20 text:

The=20 Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is charte= red=20 to develop standard signaling protocols (called PPSP protocols) for mul= tiple=20 types of entities (e.g. intelligent endpoints, caches, content distribu= tion=20 network nodes, and/or other edge devices) to participate in P2P streami= ng=20 systems in both fixed and mobile Internet.


PPSP protocols include the=20 PPSP tracker protocol =E2=80=93 a signaling protocol between =E2=80=9CP= PSP trackers=E2=80=9D and=20 =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a si= gnaling protocol among =E2=80=9CPPSP=20 peers=E2=80=9D. A PPSP tracker maintains lists of participating PPSP pe= ers, each for=20 a specific channel or streaming file, and answers the queries from PPSP= =20 peers for candidate PPSP peers. PPSP peers inform their status informat= ion=20 to PPSP trackers, exchange their chunk availability with other PPSP pee= rs=20 and/or PPSP trackers, and ask other PPSP peers for wanted=20 data.

=C2=A0

New=C2=A0text:=

The=20 Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is charte= red=20 to develop standard signaling protocols (called PPSP protocols)=C2=A0fo= r P2P=20 streaming systems in both fixed and mobile Internet. Participating enti= ties=20 could be intelligent endpoints, caches, content distribution network no= des,=20 and/or other edge devices.

= =C2=A0

For a=20 specific channel or streaming file, a PPSP tracker maintains lists of= =20 particiating PPSP peers. The PPSP tracker answers queries from PPSP pee= rs=20 for candidate PPSP peers. PPSP peers=C2=A0provide their status informat= ion=20 to PPSP trackers, exchange their chunk availability with other PPSP pee= rs=20 and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP=20 protocols include the PPSP tracker protocol =E2=80=93 a signaling proto= col between=20 =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and t= he PPSP peer protocol =E2=80=93 a signaling=20 protocol among =E2=80=9CPPSP peers=E2=80=9D.=20

=C2=A0

Architectural= =20 survey

3. An "architectural=20 survey" document explaining the current P2P streaming architecture= s, in=20 particular tracker-based P2P streaming, and key issues in best=20 practice.

It is good=20 to have a description of the current P2P streaming architecture. What i= s=20 missing is the relation to the PPSP work. Will it contain a proposal=20 for=C2=A0the PPSP architecture?

=C2=A0

Usage=20 document

6. A=20 =E2=80=9Cusage document=E2=80=9D explaining how the protocols defined a= bove, along with=20 existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-opera= te;=20 and how they may be integrated together to produce complete P2P streami= ng=20 systems.

This sounds=20 more like a "interop document". Was this the intention?

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

From: ppsp-bounces@ietf.org=20 [mailto:ppsp= -bounces@ietf.org] On Behalf Of ext=20 zhangyunfei
Sent: Thu= rsday,=20 September 10, 2009 8:24 AM
To: ppsp@ietf.org<= /a>
Subject: [ppsp] ppsp = charter=20 discussion

=C2=A0


Dear=20 all,

=C2=A0=C2=A0=20 The following is the modified version of PPSP charter(An early version = was=20 published in the IETF PPSP wiki page).Please review it and any comments= and=20 suggestions are highly appreciated.

=C2=A0

=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20 BR

=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20 Yunfei

--------------------= ------------------------------------

Description=20 of PPSP Working Group:

The Peer-to-Peer (P2P)=20 Streaming Protocol working group (PPSP WG) is chartered to develop stan= dard=20 signaling protocols (called PPSP protocols) for multiple types of entit= ies=20 (e.g. intelligent endpoints, caches, content distribution network nodes= ,=20 and/or other edge devices) to participate in P2P streaming systems in b= oth=20 fixed and mobile Internet.


PPSP protocols=20 include the PPSP tracker protocol =E2=80=93 a signaling protocol betwee= n =E2=80=9CPPSP=20 trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer p= rotocol =E2=80=93 a signaling=20 protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains l= ists of participating=20 PPSP peers, each for a specific channel or streaming file, and answers = the=20 queries from PPSP peers for candidate PPSP peers. PPSP peers inform the= ir=20 status information to PPSP trackers, exchange their chunk availability = with=20 other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wan= ted=20 data.

=C2=A0

This WG&= #39;s primary tasks=20 are to produce:
1. A =E2=80=9Cproblem statement=E2=80=9D document de= scribing the=20 problems, incentives, and scope of developing the PPSP protocols, as we= ll as=20 common terminologies and concepts.

=C2=A0

2. A =E2=80=9Crequirements=E2=80=9D=20 document listing the requirements on the designed PPSP protocols (e.g.,= =20 general functionality and performance requirements of PPSP protocols or= =20 basic types of information that PPSP protocols should communicate to=20 facilitate P2P streaming).


3. An "architectural=20 survey" document explaining the current P2P streaming architecture= s, in=20 particular tracker-based P2P streaming, and key issues in best=20 practice.


4. A= proposed=20 standard defining the PPSP peer protocol. This protocol will define how= PPSP=20 peers advertise chunk availability. The protocol will also define the= =20 requests and responses of chunks among PPSP peers.

=C2=A0

5. A pro= posed standard=20 defining the PPSP tracker protocol. This protocol will define how PPSP = peers=20 inform and request information from PPSP trackers and how PPSP trackers= =20 reply to the requests.

=C2=A0

6. A =E2=80=9Cusage document=E2=80=9D=20 explaining how the protocols defined above, along with existing IETF=20 protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how th= ey=20 may be integrated together to produce complete P2P streaming=20 systems.

=C2=A0

7. Optionally a =E2=80=9Dmobile=20 usage document=E2=80=9D (PPSP mobile BCP document) to evaluate PPSP wit= h and without=20 Mobile IP support when there are a lot of mobile peers in the=20 system.


The work planned for=20 the PPSP WG is distinct from, but requires close participation with, wo= rk in=20 other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assum= es=20 that it cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If P= PSP=20 determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP wil= l=20 seek to define such extensions and present to the respective working=20 groups.


The design of PPSP=20 has to consider security/privacy issues. The protocol document will con= tain=20 a complete description of the security/privacy issues that PPSP should= =20 address.

=C2=A0

The following topics are=20 excluded from this WG's scope:
1. Transport mechanisms for data= =20 transmission among PPSP peers, e.g. using TCP or UDP, unicast or multic= ast,=20 etc.


2. Network coding=20 mechanisms in P2P streaming. Network coding may be used in P2P streamin= g,=20 but its support is beyond the scope of current charter.

=C2=A0

3. Play-out mechanisms=20 including streaming control (e.g., pause, fast-forward, and=20 rewind).

=C2=A0

4. Algorithms that may=20 be different in different deployments (e.g., chunk selection, local sto= rage=20 strategies).

=C2=A0

5. Research type=20 questions related to P2P streaming. This WG will instead forward such= =20 questions to the IRTF P2PRG or other RG as appropriate. Examples includ= e=20 cache management.

Goals=20 and Milestones:

=

Apr=20 2010

Working Group Last=20 Call for problem statement

Jun=20 2010

Submit problem=20 statement to IESG as Informational document

Aug=20 2010

Working Group Last=20 Call for architecture survey

Aug=20 2010

Working Group Last=20 Call for requirements

Oct

2010

Submit=20 architecture survey to IESG as Informational=20 document

Oct=20 2010

Submit=20 requirements to IESG as Informational document

<= /td>

Apr=20 2011

Working Group Last=20 Call for PPSP peer protocol

Apr

2011

Working Group Last=20 Call for PPSP tracker protocol

Aug=20 2011

Submit PPSP peer=20 protocol to IESG as Proposed Standard

Aug=20 2011

Submit PPSP=20 tracker protocol to IESG as Proposed Standard

Nov=20 2011

Working Group Last=20 Call of usage document

Nov=20 2011

Working Group Last=20 Call of mobility BCP document

Jan=20 2012

Submit usage=20 document to IESG as Informational document

Jan=20 2012

Submit mobility=20 BCP document to IESG as Informational document

<= /td>

Apr=20 2012

Dissolve or=20 re-charter

=C2=A0

=C2=A0

zhangyunfei

2009-09-10


_______________________________________________
ppsp maili= ng=20 list
ppsp@ietf.or= g
https://www.ietf.org/mailman/listinfo/ppsp

<= /div>


--00504502cc9f05fdb204734044ed-- From richard_woundy@cable.comcast.com Thu Sep 10 15:16:38 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 52ADB3A69EC for ; Thu, 10 Sep 2009 15:16:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -6.404 X-Spam-Level: X-Spam-Status: No, score=-6.404 tagged_above=-999 required=5 tests=[AWL=1.458, BAYES_00=-2.599, HELO_EQ_MODEMCABLE=0.768, HOST_EQ_MODEMCABLE=1.368, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, RCVD_IN_DNSWL_HI=-8] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kJrmKhgmm2T2 for ; Thu, 10 Sep 2009 15:16:35 -0700 (PDT) Received: from pacdcimo01.cable.comcast.com (PacdcIMO01.cable.comcast.com [24.40.8.145]) by core3.amsl.com (Postfix) with ESMTP id EC18B28C233 for ; Thu, 10 Sep 2009 15:16:34 -0700 (PDT) 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X-OriginalArrivalTime: 10 Sep 2009 22:17:04.0031 (UTC) FILETIME=[6CFFEAF0:01CA3264] Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 22:16:38 -0000 This is a multi-part message in MIME format. ------_=_NextPart_001_01CA3264.6C5CBED7 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Pkkgc2F3IGEgcHJlc2VudGF0aW9uIGZyb20gbGFzdCBJRVRGJ3MgUDJQUkcgKGZyb20gUmljaCBX b3VuZHk/KSwgd2hlcmUgaXQgdGFrZXMgYSAkMywwMDAgUEMgdG8gc3VwcG9ydCA1LDAwMCBjb25j dXJyZW50IHN0cmVhbXMuIFRoYXQncyBjaGVhcCENCg0KIA0KDQpUaGF0IHdhc27igJl0IG1lLCB0 aGF0IHdhcyBPbWVyIEx1enphdHRpIG9mIFJheVYuIFNlZSBzbGlkZSA4IG9mIGh0dHA6Ly93d3cu aWV0Zi5vcmcvcHJvY2VlZGluZ3MvNzUvc2xpZGVzL1AyUFJHLTgucGRmLiANCg0KIA0KDQotLSBS 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J_CHICKENPOX_72=0.6, RCVD_IN_DNSWL_MED=-4] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mGk+QY55yBto for ; Thu, 10 Sep 2009 15:25:19 -0700 (PDT) Received: from exprod7og124.obsmtp.com (exprod7og124.obsmtp.com [64.18.2.26]) by core3.amsl.com (Postfix) with SMTP id B07FC3A6861 for ; Thu, 10 Sep 2009 15:25:18 -0700 (PDT) Received: from source ([209.85.222.188]) by exprod7ob124.postini.com ([64.18.6.12]) with SMTP ID DSNKSql88hKwxuI5HcTiEXoT8O8lg5jSZkYL@postini.com; Thu, 10 Sep 2009 15:25:55 PDT Received: by pzk26 with SMTP id 26so335486pzk.27 for ; Thu, 10 Sep 2009 15:25:54 -0700 (PDT) MIME-Version: 1.0 Received: by 10.143.138.5 with SMTP id q5mr195145wfn.135.1252621554192; Thu, 10 Sep 2009 15:25:54 -0700 (PDT) In-Reply-To: <22d04a930909101455v3df5ec7dq3241e6aa5e373f9b@mail.gmail.com> References: <0KPR00LQ0UX6ED@szxml01-in.huawei.com> <22d04a930909101455v3df5ec7dq3241e6aa5e373f9b@mail.gmail.com> From: Ping Pan Date: Thu, 10 Sep 2009 15:25:34 -0700 Message-ID: <22d04a930909101525i69a3cd78gf028040e0e2c5b9a@mail.gmail.com> To: Ning Zong Content-Type: multipart/alternative; boundary=000e0cd51d62c693bc047340ae12 Cc: "ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2009 22:25:23 -0000 --000e0cd51d62c693bc047340ae12 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Rich, Thanks for the correction. Ping Pan (408) 655-6547 On Thu, Sep 10, 2009 at 2:55 PM, Ping Pan wrote: > Ning, > > Thanks for the clarification. > > Here is my main concern: currently, PPSP is positioned as yet another > streaming protocol to the end users. > > IMHO, the end users can care less where the traffic are streaming from so > long it's convenient, safe and have reasonable QoE. Do we need another > streaming protocol to do this? > > One may argue the advantages in P2P. But, to many, PPSP is actually > endorsing the following: > > - I need to install a special software from the ASP's, which may use m= y > local CPU and storage for P2P operation, and do some other things that= I > don't know about. > - The software enables me to watch some movies from the peers, who may > be chased by the lawyers from some media companies. > - On top of that, the service networks, especially, those who have to > pay for the expensive backhaul links, may be sick of the traffic volum= e, and > may install DPI boxes at every possible intersection to drop my video = stream > traffic (here goes my QoE). > > In short, I don't think it's wise to address all of the above in one WG, > one architecture or one protocol. Rather, it would be nice to focus on wh= at > P2P streaming is good at, use it to solve a couple of real problems, and > move on to the next. > > We must not ignore the advancement of the following in P2P streaming: > > - Cost efficiency: I saw a presentation from last IETF's P2PRG (from > Rich Woundy?), where it takes a $3,000 PC to support 5,000 concurrent > streams. That's cheap! > - Simplicity: it never occurred to me that why we must have storage > servers, called CDN, sitting all over the place, while some simple cac= hing > would be sufficient. In PPlive's Sigcomm paper, it mentioned of using = 8/12G > of Flash only, and no harddrive. (This may help answering some copyrig= ht > concerns). > - Portability: people may argue uplink vs. inter-domain locality. But > all service providers need to do is inserting a few P2P edge caching b= oxes > in the network. If more locality is needed, add another one. Chunk dis= covery > and tracker manager are perfect for this. > > This is the line of reasoning I had: why not narrow the scope of PPSP, an= d > solve the caching problem first? > > Once again, I don't think PPSP needs to deal with end users for now. In > fact, by forcing an open standard, you are taking away the leverage from = the > existing P2P media companies, including PPlive and PPstream (as mentioned= in > another draft of yours :-)). Nobody wins! > > 0.5 cents, > > - Ping > > 2009/9/10 Ning Zong > >> Hi, Ping, >> >> End users will run PPSP. As addressed in charter, PPSP protocols could r= un >> on multiple entities such as end users, caches, CDN nodes, etc. >> Here we talk about the standard protocols running on end users. What do >> you mean by non-technical issues? If you mean security, privacy and >> copyrights issues, I think not only PPSP, but some other BoF/WGs have sa= me >> issues. You are perfectly right, they will be not in the working scope (= but >> need some considerations during the WG work). >> >> BR, >> Ning Zong >> >> ------------------------------ >> Ning, >> >> We are in agreement here. So, you have listed three objectives for PPSP: >> >> 1. Standard interface to CDN/Cache >> 2. Enable media providers to stream content through standard interfaces >> 3. Help the service providers to manage their network/links better. >> >> So, curious, does it require the end users to run PPSP as well? The >> problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seem= s >> to assume that is the case. (If I am not mistaken, all the "proprietary >> protocols" listed in Section 3.1 are client P2P applications). If yes, y= ou >> have a wide scope of non-technical issues to deal with. If no, then you = need >> to make it clear in the documents. >> >> Thanks for clarification. >> >> Ping >> >> >> 2009/9/10 Ning Zong >> >>> Hi, Ping, >>> >>> Thank you for your comments, please see in-line. >>> >>> ------------------------------ >>> Ning, >>> >>> I'd think that it is very important to emphasis the target users of the >>> work, which has been quoted as "intelligent endpoints, caches, content >>> distribution network nodes, and/or other edge devices." >>> >>> [Ning Zong] This is a good suggestion. >>> >>> If possible, I would hope that further specification, clarification and >>> constraints to be added in one of the documents. >>> >>> The reasoning is that, if the work is to enable further proliferation o= f >>> P2P clients within the networks, then the WG needs to address issues >>> including security, privacy and copyrights extensively. This may be abo= ve >>> and beyond technology, and is probably outside the scope of PPSP. >>> >>> On the other hand, if the work is to enable more efficient streaming >>> content distribtution within a controlled environment by leveraging >>> mechanisms such as tracker management and chuck discovery, then the wor= k is >>> well understood, and can be clearly defined, specified and experimented= in >>> the near future. >>> >>> [Ning Zong] If I understand your question correctly, this is related to >>> the incentives of PPSP work. The clarification of incentives are furthe= r >>> provided in problem statement. IMO, the second point in your comments i= s >>> closer to current intention of PPSP. To be brief, the intention include >>> (maybe not limited to): 1) enable more efficient streaming to integrate= 3rd >>> party devices, e.g. cache/CDN nodes; 2) enable streaming vendors to >>> accomplish content distribution via some standard API, thus reduce >>> the time-to-market and maybe cost, we hope; 3) enable ISPs to >>> construct standard streaming platform to run content provisioning servi= ces. >>> >>> 2 cents, >>> >>> - Ping >>> >>> 2009/9/10 Ning Zong >>> >>>> Hi, Lucy >>>> >>>> The participating entities in the first paragraph include both peers a= nd >>>> trackers in P2P streaming systems. In second paragraph, we discuss the= roles >>>> of trackers - assuming that people know the basic meaning of peers. >>>> Formal definitions of PPSP peers and PPSP trackers are defined in >>>> Problem Statement Draft. >>>> >>>> BR, >>>> Ning Zong >>>> >>>> ------------------------------ >>>> >>>> Hi YunFei and Christian, >>>> >>>> >>>> >>>> One clarification: =E2=80=9Cparticipating entities=E2=80=9D listed in = the text are the >>>> peer in P2P streaming systems, is that right? Thus, =E2=80=9CPPSP=E2= =80=9D trackers are >>>> another participator in the systems. Suggest stating that clearly in = the >>>> first paragraph. >>>> >>>> >>>> >>>> Cheers, >>>> >>>> Lucy >>>> >>>> >>>> ------------------------------ >>>> >>>> *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behal= f >>>> Of *Schmidt, Christian 1. (NSN - DE/Munich) >>>> *Sent:* Thursday, September 10, 2009 3:03 AM >>>> *To:* ext zhangyunfei; ppsp@ietf.org >>>> *Subject:* Re: [ppsp] ppsp charter discussion >>>> >>>> >>>> >>>> Hi Yunfei, >>>> >>>> after reading your charter proposal, a text proposal and 2 questions f= or >>>> clarifications. >>>> >>>> >>>> >>>> Best Regards >>>> >>>> Christian Schmidt >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> Proposed new text for more transparency in main description: >>>> >>>> Old text: >>>> >>>> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >>>> chartered to develop standard signaling protocols (called PPSP protoco= ls) >>>> for multiple types of entities (e.g. intelligent endpoints, caches, co= ntent >>>> distribution network nodes, and/or other edge devices) to participate = in P2P >>>> streaming systems in both fixed and mobile Internet. >>>> >>>> >>>> PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling= protocol >>>> between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80= =9D, and the PPSP peer protocol =E2=80=93 a >>>> signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker = maintains lists of >>>> participating PPSP peers, each for a specific channel or streaming fil= e, and >>>> answers the queries from PPSP peers for candidate PPSP peers. PPSP pee= rs >>>> inform their status information to PPSP trackers, exchange their chunk >>>> availability with other PPSP peers and/or PPSP trackers, and ask other= PPSP >>>> peers for wanted data. >>>> >>>> >>>> >>>> New text: >>>> >>>> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >>>> chartered to develop standard signaling protocols (called PPSP >>>> protocols) for P2P streaming systems in both fixed and mobile Internet= . >>>> Participating entities could be intelligent endpoints, caches, content >>>> distribution network nodes, and/or other edge devices. >>>> >>>> >>>> >>>> For a specific channel or streaming file, a PPSP tracker maintains lis= ts >>>> of particiating PPSP peers. The PPSP tracker answers queries from PPSP= peers >>>> for candidate PPSP peers. PPSP peers provide their status information = to >>>> PPSP trackers, exchange their chunk availability with other PPSP peers >>>> and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP >>>> protocols include the PPSP tracker protocol =E2=80=93 a signaling prot= ocol between >>>> =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and = the PPSP peer protocol =E2=80=93 a signaling >>>> protocol among =E2=80=9CPPSP peers=E2=80=9D. >>>> >>>> >>>> >>>> Architectural survey >>>> >>>> 3. An "architectural survey" document explaining the current P2P >>>> streaming architectures, in particular tracker-based P2P streaming, an= d key >>>> issues in best practice. >>>> >>>> It is good to have a description of the current P2P streaming >>>> architecture. What is missing is the relation to the PPSP work. Will i= t >>>> contain a proposal for the PPSP architecture? >>>> >>>> >>>> >>>> Usage document >>>> >>>> 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols def= ined above, along >>>> with existing IETF protocols, such as RELAOD, ALTO and RTSP, can >>>> inter-operate; and how they may be integrated together to produce comp= lete >>>> P2P streaming systems. >>>> >>>> This sounds more like a "interop document". Was this the intention? >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> ------------------------------ >>>> >>>> *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behal= f >>>> Of *ext zhangyunfei >>>> *Sent:* Thursday, September 10, 2009 8:24 AM >>>> *To:* ppsp@ietf.org >>>> *Subject:* [ppsp] ppsp charter discussion >>>> >>>> ** >>>> >>>> *Dear all,* >>>> >>>> * The following is the modified version of PPSP charter(An early >>>> version was published in the IETF PPSP wiki page).Please review it and= any >>>> comments and suggestions are highly appreciated.* >>>> >>>> >>>> >>>> * BR* >>>> >>>> * Yunfei* >>>> >>>> *--------------------------------------------------------* >>>> >>>> *Description of PPSP Working Group:* >>>> >>>> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >>>> chartered to develop standard signaling protocols (called PPSP protoco= ls) >>>> for multiple types of entities (e.g. intelligent endpoints, caches, co= ntent >>>> distribution network nodes, and/or other edge devices) to participate = in P2P >>>> streaming systems in both fixed and mobile Internet. >>>> >>>> >>>> PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling= protocol >>>> between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80= =9D, and the PPSP peer protocol =E2=80=93 a >>>> signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker = maintains lists of >>>> participating PPSP peers, each for a specific channel or streaming fil= e, and >>>> answers the queries from PPSP peers for candidate PPSP peers. PPSP pee= rs >>>> inform their status information to PPSP trackers, exchange their chunk >>>> availability with other PPSP peers and/or PPSP trackers, and ask other= PPSP >>>> peers for wanted data. >>>> >>>> >>>> >>>> This WG's primary tasks are to produce: >>>> 1. A =E2=80=9Cproblem statement=E2=80=9D document describing the probl= ems, incentives, >>>> and scope of developing the PPSP protocols, as well as common terminol= ogies >>>> and concepts. >>>> >>>> >>>> >>>> 2. A =E2=80=9Crequirements=E2=80=9D document listing the requirements = on the designed >>>> PPSP protocols (e.g., general functionality and performance requiremen= ts of >>>> PPSP protocols or basic types of information that PPSP protocols shoul= d >>>> communicate to facilitate P2P streaming). >>>> >>>> >>>> 3. An "architectural survey" document explaining the current P2P >>>> streaming architectures, in particular tracker-based P2P streaming, an= d key >>>> issues in best practice. >>>> >>>> >>>> 4. A proposed standard defining the PPSP peer protocol. This protocol >>>> will define how PPSP peers advertise chunk availability. The protocol = will >>>> also define the requests and responses of chunks among PPSP peers. >>>> >>>> >>>> >>>> 5. A proposed standard defining the PPSP tracker protocol. This protoc= ol >>>> will define how PPSP peers inform and request information from PPSP tr= ackers >>>> and how PPSP trackers reply to the requests. >>>> >>>> >>>> >>>> 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols def= ined above, along >>>> with existing IETF protocols, such as RELAOD, ALTO and RTSP, can >>>> inter-operate; and how they may be integrated together to produce comp= lete >>>> P2P streaming systems. >>>> >>>> >>>> >>>> 7. Optionally a =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile B= CP document) to >>>> evaluate PPSP with and without Mobile IP support when there are a lot = of >>>> mobile peers in the system. >>>> >>>> >>>> The work planned for the PPSP WG is distinct from, but requires close >>>> participation with, work in other IETF WGs, particularly P2PSIP, ALTO = and >>>> MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALT= O, and >>>> MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, = MMUSIC >>>> are needed, PPSP will seek to define such extensions and present to th= e >>>> respective working groups. >>>> >>>> >>>> The design of PPSP has to consider security/privacy issues. The protoc= ol >>>> document will contain a complete description of the security/privacy i= ssues >>>> that PPSP should address. >>>> >>>> >>>> >>>> The following topics are excluded from this WG's scope: >>>> 1. Transport mechanisms for data transmission among PPSP peers, e.g. >>>> using TCP or UDP, unicast or multicast, etc. >>>> >>>> >>>> 2. Network coding mechanisms in P2P streaming. Network coding may be >>>> used in P2P streaming, but its support is beyond the scope of current >>>> charter. >>>> >>>> >>>> >>>> 3. Play-out mechanisms including streaming control (e.g., pause, >>>> fast-forward, and rewind). >>>> >>>> >>>> >>>> 4. Algorithms that may be different in different deployments (e.g., >>>> chunk selection, local storage strategies). >>>> >>>> >>>> >>>> 5. Research type questions related to P2P streaming. This WG will >>>> instead forward such questions to the IRTF P2PRG or other RG as approp= riate. >>>> Examples include cache management. >>>> >>>> *Goals and Milestones:* >>>> >>>> Apr 2010 >>>> >>>> Working Group Last Call for problem statement >>>> >>>> Jun 2010 >>>> >>>> Submit problem statement to IESG as Informational document >>>> >>>> Aug 2010 >>>> >>>> Working Group Last Call for architecture survey >>>> >>>> Aug 2010 >>>> >>>> Working Group Last Call for requirements >>>> >>>> Oct >>>> >>>> 2010 >>>> >>>> Submit architecture survey to IESG as Informational document >>>> >>>> Oct 2010 >>>> >>>> Submit requirements to IESG as Informational document >>>> >>>> Apr 2011 >>>> >>>> Working Group Last Call for PPSP peer protocol >>>> >>>> Apr >>>> >>>> 2011 >>>> >>>> Working Group Last Call for PPSP tracker protocol >>>> >>>> Aug 2011 >>>> >>>> Submit PPSP peer protocol to IESG as Proposed Standard >>>> >>>> Aug 2011 >>>> >>>> Submit PPSP tracker protocol to IESG as Proposed Standard >>>> >>>> Nov 2011 >>>> >>>> Working Group Last Call of usage document >>>> >>>> Nov 2011 >>>> >>>> Working Group Last Call of mobility BCP document >>>> >>>> Jan 2012 >>>> >>>> Submit usage document to IESG as Informational document >>>> >>>> Jan 2012 >>>> >>>> Submit mobility BCP document to IESG as Informational document >>>> >>>> Apr 2012 >>>> >>>> Dissolve or re-charter >>>> >>>> >>>> >>>> >>>> ------------------------------ >>>> >>>> zhangyunfei >>>> >>>> 2009-09-10 >>>> ------------------------------ >>>> >>>> _______________________________________________ >>>> ppsp mailing list >>>> ppsp@ietf.org >>>> https://www.ietf.org/mailman/listinfo/ppsp >>>> >>>> >>> ------------------------------ >>> >> >> ------------------------------ >> > > --000e0cd51d62c693bc047340ae12 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Rich,

Thanks for the correction.=C2=A0
=
Ping Pan =C2=A0(408) 655-6547


On Thu, Sep 10, 2009 at 2:55 PM, Ping Pa= n <ping@pingpan.or= g> wrote:
Ning,

Thanks for the clarification.

Here is my main concern: currently, PPSP is positioned as y= et another streaming protocol to the end users.

IMHO, the end users can care less where the traffic are streaming from so l= ong it's=C2=A0convenient,=C2=A0safe and have reasonable QoE. Do we need= another streaming protocol to do this?

One may argue the advantages in P2P. But, to many, PPSP= is actually endorsing the following:
  • I need to install a= special software from the ASP's, which may use my local CPU and storag= e for P2P operation, and do some other things that I don't know about.<= /li>
  • The software enables me to watch some movies from the peers, who may be= chased by the lawyers from some media companies.=C2=A0
  • On top of t= hat, the service networks, especially, those who have to pay for the expens= ive backhaul links, may be sick of the traffic volume, and may install DPI = boxes at every possible intersection to drop my video stream traffic (here = goes my QoE).
In short, I don't think it's wise to address all of= the above in one WG, one architecture or one protocol. Rather, it would be= nice to focus on what P2P streaming is good at, use it to solve a couple o= f real problems, and move on to the next.

We must not ignore the advancement of the following in = P2P streaming:
  • Cost efficiency: I saw a=C2=A0presentation= =C2=A0from last IETF's P2PRG (from Rich Woundy?), where it takes a $3,0= 00 PC to support 5,000 concurrent streams. That's cheap!
  • Simplicity: it never=C2=A0occurred=C2=A0to me that why we must have sto= rage servers, called CDN, sitting all over the place, while some simple cac= hing would be sufficient. In PPlive's Sigcomm paper, it mentioned of us= ing 8/12G of Flash only, and no harddrive. (This may help answering some co= pyright concerns).
  • Portability: people may argue uplink vs. inter-domain=C2=A0locality. Bu= t all service providers need to do is inserting a few P2P edge caching boxe= s in the network. If more locality is needed, add another one. Chunk discov= ery and tracker manager are perfect for this.
This is the line of reasoning I had: why not narrow the sco= pe of PPSP, and solve the caching problem first?

O= nce again, I don't think PPSP needs to deal with end users for now. In = fact, by forcing an open standard, you are taking away the leverage from th= e existing P2P media companies, including PPlive and PPstream (as mentioned= in another draft of yours :-)). Nobody wins!

0.5 cents,
=
- Ping

2009/9/10 Ning Zong <zongning@huawei.com>
Hi, Ping,
=C2=A0
End users will run PPSP. As addressed in charter, PPSP protocols could= run=20 on multiple entities such as end users, caches, CDN nodes, etc.
Here we=C2=A0talk about the standard protocols running on end users. W= hat=20 do you mean by non-technical issues? If you mean security, privacy and=20 copyrights issues, I think not only PPSP, but some other BoF/WGs=C2=A0have = same=20 issues. You are perfectly right, they will be not in the working scope (but= need=20 some considerations during the WG work).
=C2=A0
BR,
Ning Zong=C2=A0
=C2=A0
Ning,

We are in agreement=20 here.=C2=A0So, you have listed three=C2=A0objectives=C2=A0for=20 PPSP:

1. Standard interface=20 to CDN/Cache
2. Enable media=20 providers to stream content through standard interfaces
3. Help the service=20 providers to manage their network/links better.

So, curious, does it require the end users to run PPSP as well?=C2=A0<= span style=3D"font-size:small">= The problem statement draft=20 (draft-zhang-ppsp-problem-statement-04.txt)=20 seems to assume that is the case. (If I am not mistaken, all the "prop= rietary=20 protocols" listed in Section 3.1 are client P2P applications). If yes,= you have=20 a wide scope of non-technical issues to deal with. If no, then you need to = make=20 it clear in the documents.

Thanks for clarification.

Ping


2009/9/10 Ning Zong <zongning@huawei.com&= gt;
Hi, Ping,
=C2=A0
Thank you for your comments, please see in-line.
=C2=A0
Ning,

I'd think that it is very important to emphasis the target users= of the=20 work, which has been quoted as "intelligent=20 endpoints, caches, content distribution network nodes, and/or other edge= =20 devices."=
=C2=A0
[Ning Zong] This is a good=20 suggestion.

If possible, I would hope that further specification, clarification = and=20 constraints to be added in one of the documents.

The reasoning is that, if the work is to enable=20 further=C2=A0proliferation=C2=A0of P2P clients within the networks, then = the=20 WG needs to address issues including security, privacy and copyrights=20 extensively. This may be above and beyond technology, and=C2=A0is probabl= y=20 outside the scope of PPSP.

On the other hand, if the work is to enable more efficient streaming= =20 content distribtution within a controlled=C2=A0environment by leveraging= =20 mechanisms such as tracker management and chuck discovery, then the work = is=20 well understood, and can be clearly defined, specified and experimented i= n the=20 near future.
=C2=A0
[Ning Zong] If I understand your question correctly, this is related= to=20 the incentives of PPSP work. The clarification of incentives are further= =20 provided in problem statement. IMO, the second point in your comments is= =20 closer to=C2=A0current intention of PPSP. To be brief, the intention incl= ude=20 (maybe not limited to): 1) enable more efficient streaming to=20 integrate=C2=A03rd party devices, e.g. cache/CDN nodes;=20 2)=C2=A0enable=C2=A0streaming vendors=C2=A0to accomplish=C2=A0content=20 distribution via some standard API, thus reduce the=C2=A0time-to-market a= nd=20 maybe cost, we hope; 3) enable ISPs to construct=C2=A0standard streaming= =20 platform to run content provisioning services.

2 cents,

- Ping

2009/9/10 Ning Zong <zongning@huawei.com>
Hi, Lucy
=C2=A0
The participating entities in the first paragraph include both pee= rs=20 and trackers in P2P streaming systems. In second paragraph, we discuss = the=20 roles of=C2=A0trackers -=C2=A0assuming that people know the basic meani= ng of=20 peers.
Formal definitions of PPSP peers and PPSP trackers are defined in= =20 Problem Statement Draft.
=C2=A0
BR,
Ning Zong
=C2=A0

Hi YunFei and=20 Christian,

=C2=A0

One clarification:=20 =E2=80=9Cparticipating entities=E2=80=9D listed in the text are the pee= r in P2P streaming=20 systems, is that right? Thus, =E2=80=9CPPSP=E2=80=9D trackers are anoth= er participator in=20 the systems. =C2=A0Suggest stating that clearly in the first=20 paragraph.

=C2=A0

Cheers,

Lucy

=C2=A0

=C2=A0

Hi=20 Yunfei,

after reading your=20 charter proposal, a text proposal and 2 questions for=20 clarifications.= =

= =C2=A0

Best=20 Regards

Christian=20 Schmidt

= =C2=A0

= =C2=A0

= =C2=A0

Proposed=20 new text=C2=A0for more transparency in main description:<= font face=3D"Arial" color=3D"blue" size=3D"2">

Old=20 text:

The=20 Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is charte= red=20 to develop standard signaling protocols (called PPSP protocols) for mul= tiple=20 types of entities (e.g. intelligent endpoints, caches, content distribu= tion=20 network nodes, and/or other edge devices) to participate in P2P streami= ng=20 systems in both fixed and mobile Internet.


PPSP protocols include the=20 PPSP tracker protocol =E2=80=93 a signaling protocol between =E2=80=9CP= PSP trackers=E2=80=9D and=20 =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a si= gnaling protocol among =E2=80=9CPPSP=20 peers=E2=80=9D. A PPSP tracker maintains lists of participating PPSP pe= ers, each for=20 a specific channel or streaming file, and answers the queries from PPSP= =20 peers for candidate PPSP peers. PPSP peers inform their status informat= ion=20 to PPSP trackers, exchange their chunk availability with other PPSP pee= rs=20 and/or PPSP trackers, and ask other PPSP peers for wanted=20 data.

=C2=A0

New=C2=A0text:=

The=20 Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is charte= red=20 to develop standard signaling protocols (called PPSP protocols)=C2=A0fo= r P2P=20 streaming systems in both fixed and mobile Internet. Participating enti= ties=20 could be intelligent endpoints, caches, content distribution network no= des,=20 and/or other edge devices.

= =C2=A0

For a=20 specific channel or streaming file, a PPSP tracker maintains lists of= =20 particiating PPSP peers. The PPSP tracker answers queries from PPSP pee= rs=20 for candidate PPSP peers. PPSP peers=C2=A0provide their status informat= ion=20 to PPSP trackers, exchange their chunk availability with other PPSP pee= rs=20 and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP=20 protocols include the PPSP tracker protocol =E2=80=93 a signaling proto= col between=20 =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and t= he PPSP peer protocol =E2=80=93 a signaling=20 protocol among =E2=80=9CPPSP peers=E2=80=9D.=20

=C2=A0

Architectural= =20 survey

3. An "architectural=20 survey" document explaining the current P2P streaming architecture= s, in=20 particular tracker-based P2P streaming, and key issues in best=20 practice.

It is good=20 to have a description of the current P2P streaming architecture. What i= s=20 missing is the relation to the PPSP work. Will it contain a proposal=20 for=C2=A0the PPSP architecture?

=C2=A0

Usage=20 document

6. A=20 =E2=80=9Cusage document=E2=80=9D explaining how the protocols defined a= bove, along with=20 existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-opera= te;=20 and how they may be integrated together to produce complete P2P streami= ng=20 systems.

This sounds=20 more like a "interop document". Was this the intention?

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

From: ppsp-bounces@ietf.org=20 [mailto:ppsp= -bounces@ietf.org] On Behalf Of ext=20 zhangyunfei
Sent: Thu= rsday,=20 September 10, 2009 8:24 AM
To: ppsp@ietf.org<= /a>
Subject: [ppsp] ppsp = charter=20 discussion

=C2=A0


Dear=20 all,

=C2=A0=C2=A0=20 The following is the modified version of PPSP charter(An early version = was=20 published in the IETF PPSP wiki page).Please review it and any comments= and=20 suggestions are highly appreciated.

=C2=A0

=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20 BR

=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20 Yunfei

--------------------= ------------------------------------

Description=20 of PPSP Working Group:

The Peer-to-Peer (P2P)=20 Streaming Protocol working group (PPSP WG) is chartered to develop stan= dard=20 signaling protocols (called PPSP protocols) for multiple types of entit= ies=20 (e.g. intelligent endpoints, caches, content distribution network nodes= ,=20 and/or other edge devices) to participate in P2P streaming systems in b= oth=20 fixed and mobile Internet.


PPSP protocols=20 include the PPSP tracker protocol =E2=80=93 a signaling protocol betwee= n =E2=80=9CPPSP=20 trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer p= rotocol =E2=80=93 a signaling=20 protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains l= ists of participating=20 PPSP peers, each for a specific channel or streaming file, and answers = the=20 queries from PPSP peers for candidate PPSP peers. PPSP peers inform the= ir=20 status information to PPSP trackers, exchange their chunk availability = with=20 other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wan= ted=20 data.

=C2=A0

This WG&= #39;s primary tasks=20 are to produce:
1. A =E2=80=9Cproblem statement=E2=80=9D document de= scribing the=20 problems, incentives, and scope of developing the PPSP protocols, as we= ll as=20 common terminologies and concepts.

=C2=A0

2. A =E2=80=9Crequirements=E2=80=9D=20 document listing the requirements on the designed PPSP protocols (e.g.,= =20 general functionality and performance requirements of PPSP protocols or= =20 basic types of information that PPSP protocols should communicate to=20 facilitate P2P streaming).


3. An "architectural=20 survey" document explaining the current P2P streaming architecture= s, in=20 particular tracker-based P2P streaming, and key issues in best=20 practice.


4. A= proposed=20 standard defining the PPSP peer protocol. This protocol will define how= PPSP=20 peers advertise chunk availability. The protocol will also define the= =20 requests and responses of chunks among PPSP peers.

=C2=A0

5. A pro= posed standard=20 defining the PPSP tracker protocol. This protocol will define how PPSP = peers=20 inform and request information from PPSP trackers and how PPSP trackers= =20 reply to the requests.

=C2=A0

6. A =E2=80=9Cusage document=E2=80=9D=20 explaining how the protocols defined above, along with existing IETF=20 protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how th= ey=20 may be integrated together to produce complete P2P streaming=20 systems.

=C2=A0

7. Optionally a =E2=80=9Dmobile=20 usage document=E2=80=9D (PPSP mobile BCP document) to evaluate PPSP wit= h and without=20 Mobile IP support when there are a lot of mobile peers in the=20 system.


The work planned for=20 the PPSP WG is distinct from, but requires close participation with, wo= rk in=20 other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assum= es=20 that it cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If P= PSP=20 determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP wil= l=20 seek to define such extensions and present to the respective working=20 groups.


The design of PPSP=20 has to consider security/privacy issues. The protocol document will con= tain=20 a complete description of the security/privacy issues that PPSP should= =20 address.

=C2=A0

The following topics are=20 excluded from this WG's scope:
1. Transport mechanisms for data= =20 transmission among PPSP peers, e.g. using TCP or UDP, unicast or multic= ast,=20 etc.


2. Network coding=20 mechanisms in P2P streaming. Network coding may be used in P2P streamin= g,=20 but its support is beyond the scope of current charter.

=C2=A0

3. Play-out mechanisms=20 including streaming control (e.g., pause, fast-forward, and=20 rewind).

=C2=A0

4. Algorithms that may=20 be different in different deployments (e.g., chunk selection, local sto= rage=20 strategies).

=C2=A0

5. Research type=20 questions related to P2P streaming. This WG will instead forward such= =20 questions to the IRTF P2PRG or other RG as appropriate. Examples includ= e=20 cache management.

Goals=20 and Milestones:

=

Apr=20 2010

Working Group Last=20 Call for problem statement

Jun=20 2010

Submit problem=20 statement to IESG as Informational document

Aug=20 2010

Working Group Last=20 Call for architecture survey

Aug=20 2010

Working Group Last=20 Call for requirements

Oct

2010

Submit=20 architecture survey to IESG as Informational=20 document

Oct=20 2010

Submit=20 requirements to IESG as Informational document

<= /td>

Apr=20 2011

Working Group Last=20 Call for PPSP peer protocol

Apr

2011

Working Group Last=20 Call for PPSP tracker protocol

Aug=20 2011

Submit PPSP peer=20 protocol to IESG as Proposed Standard

Aug=20 2011

Submit PPSP=20 tracker protocol to IESG as Proposed Standard

Nov=20 2011

Working Group Last=20 Call of usage document

Nov=20 2011

Working Group Last=20 Call of mobility BCP document

Jan=20 2012

Submit usage=20 document to IESG as Informational document

Jan=20 2012

Submit mobility=20 BCP document to IESG as Informational document

<= /td>

Apr=20 2012

Dissolve or=20 re-charter

=C2=A0

=C2=A0

zhangyunfei

2009-09-10


_______________________________________________
ppsp maili= ng=20 list
ppsp@ietf.or= g
https://www.ietf.org/mailman/listinfo/ppsp

<= /div>



--000e0cd51d62c693bc047340ae12-- From hishigh@gmail.com Thu Sep 10 19:28:52 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id E3BE43A68DF for ; Thu, 10 Sep 2009 19:28:52 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id AzGZYDQks1Ha for ; Thu, 10 Sep 2009 19:28:51 -0700 (PDT) Received: from mail-pz0-f190.google.com (mail-pz0-f190.google.com [209.85.222.190]) by core3.amsl.com (Postfix) with ESMTP id 05E4D3A67AE for ; Thu, 10 Sep 2009 19:28:24 -0700 (PDT) Received: by pzk28 with SMTP id 28so538074pzk.20 for ; Thu, 10 Sep 2009 19:28:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=I4yzlETq5G5ePE1E0H4ozba0QWQNr/8XPPpv7griBe4=; b=GoEnTkG4AC3FgR+WDb7eWhtMQpuDaYHk+XMwyMx0ZJr3Kv/gUq3DCARMKDX9O5mQC8 25fu08rifhMc+4CWxeD8nJBgmG2p1CkaTDKYgf0iXp8T3XPURJC3C+0sL9T8Xc3/PYMR HnOSH/tm6nQbO+DhUXfNgciDZ0GPXK8TBcbuM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=Y6Pk6aXVrQOwnw60dm5qc2/CVEo3F4VZ2/u9MFbODJm9RZZcy6JD5oAAxlmNeuXw87 ArVVfDOmM5K8yRaANhTwfKA0Oy4ixwrIQ9nRbxWvS2/5NWj3VcgyFxYy7E+mUXo6NmFp b6M5IyAVVdLkt/7+qycTPWHz0FntxPXv3CbYQ= MIME-Version: 1.0 Received: by 10.143.129.3 with SMTP id g3mr224094wfn.240.1252636129234; Thu, 10 Sep 2009 19:28:49 -0700 (PDT) In-Reply-To: <7787ACCB-1607-42CA-803D-E43D8660EF59@nokia.com> References: <200909101423493286131@chinamobile.com> <7787ACCB-1607-42CA-803D-E43D8660EF59@nokia.com> Date: Fri, 11 Sep 2009 10:28:49 +0800 Message-ID: <8bd755250909101928w4aa0daebrea3509ca82b5c808@mail.gmail.com> From: yunfei zhang To: Lars Eggert Content-Type: multipart/alternative; boundary=000e0cd5c380840f0104734413da Cc: "ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Sep 2009 02:28:53 -0000 --000e0cd5c380840f0104734413da Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Thanks Lars for the reminding.The charter has been updated in the wiki.Please see http://trac.tools.ietf.org/area/tsv/trac/wiki/PPSP?version=3D14 for the reference. Yunfei 2009/9/10, Lars Eggert : > > Hi, > > in order to make sure that the IESG and IAB have the latest BOF proposal > when they make a decision, it'd be good if you either updated the wiki to= o > (since that's currently listed as where the request is on > http://trac.tools.ietf.org/bof/trac/wiki/WikiStart) or alternatively, > replace the wiki with a pointer to the latest relevant email. > > Lars > > On 2009-9-10, at 9:23, zhangyunfei wrote: > > Dear all, >> The following is the modified version of PPSP charter(An early version >> was published in the IETF PPSP wiki page).Please review it and any comme= nts >> and suggestions are highly appreciated. >> >> BR >> Yunfei >> -------------------------------------------------------- >> Description of PPSP Working Group: >> The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >> chartered to develop standard signaling protocols (called PPSP protocols= ) >> for multiple types of entities (e.g. intelligent endpoints, caches, cont= ent >> distribution network nodes, and/or other edge devices) to participate in= P2P >> streaming systems in both fixed and mobile Internet. >> >> PPSP protocols include the PPSP tracker protocol =96 a signaling protoco= l >> between =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer prot= ocol =96 a >> signaling protocol among =93PPSP peers=94. A PPSP tracker maintains list= s of >> participating PPSP peers, each for a specific channel or streaming file,= and >> answers the queries from PPSP peers for candidate PPSP peers. PPSP peers >> inform their status information to PPSP trackers, exchange their chunk >> availability with other PPSP peers and/or PPSP trackers, and ask other P= PSP >> peers for wanted data. >> >> This WG's primary tasks are to produce: >> 1. A =93problem statement=94 document describing the problems, incentive= s, and >> scope of developing the PPSP protocols, as well as common terminologies = and >> concepts. >> >> 2. A =93requirements=94 document listing the requirements on the designe= d PPSP >> protocols (e.g., general functionality and performance requirements of P= PSP >> protocols or basic types of information that PPSP protocols should >> communicate to facilitate P2P streaming). >> >> 3. An "architectural survey" document explaining the current P2P streami= ng >> architectures, in particular tracker-based P2P streaming, and key issues= in >> best practice. >> >> 4. A proposed standard defining the PPSP peer protocol. This protocol wi= ll >> define how PPSP peers advertise chunk availability. The protocol will al= so >> define the requests and responses of chunks among PPSP peers. >> >> 5. A proposed standard defining the PPSP tracker protocol. This protocol >> will define how PPSP peers inform and request information from PPSP trac= kers >> and how PPSP trackers reply to the requests. >> >> 6. A =93usage document=94 explaining how the protocols defined above, al= ong >> with existing IETF protocols, such as RELAOD, ALTO and RTSP, can >> inter-operate; and how they may be integrated together to produce comple= te >> P2P streaming systems. >> >> 7. Optionally a =94mobile usage document=94 (PPSP mobile BCP document) t= o >> evaluate PPSP with and without Mobile IP support when there are a lot of >> mobile peers in the system. >> >> The work planned for the PPSP WG is distinct from, but requires close >> participation with, work in other IETF WGs, particularly P2PSIP, ALTO an= d >> MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO,= and >> MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MM= USIC >> are needed, PPSP will seek to define such extensions and present to the >> respective working groups. >> >> The design of PPSP has to consider security/privacy issues. The protocol >> document will contain a complete description of the security/privacy iss= ues >> that PPSP should address. >> >> The following topics are excluded from this WG's scope: >> 1. Transport mechanisms for data transmission among PPSP peers, e.g. usi= ng >> TCP or UDP, unicast or multicast, etc. >> >> 2. Network coding mechanisms in P2P streaming. Network coding may be use= d >> in P2P streaming, but its support is beyond the scope of current charter= . >> >> 3. Play-out mechanisms including streaming control (e.g., pause, >> fast-forward, and rewind). >> >> 4. Algorithms that may be different in different deployments (e.g., chun= k >> selection, local storage strategies). >> >> 5. Research type questions related to P2P streaming. This WG will instea= d >> forward such questions to the IRTF P2PRG or other RG as appropriate. >> Examples include cache management. >> Goals and Milestones: >> Apr 2010 >> >> Working Group Last Call for problem statement >> >> Jun 2010 >> >> Submit problem statement to IESG as Informational document >> >> Aug 2010 >> >> Working Group Last Call for architecture survey >> >> Aug 2010 >> >> Working Group Last Call for requirements >> >> Oct >> 2010 >> >> Submit architecture survey to IESG as Informational document >> >> Oct 2010 >> >> Submit requirements to IESG as Informational document >> >> Apr 2011 >> >> Working Group Last Call for PPSP peer protocol >> >> Apr >> 2011 >> >> Working Group Last Call for PPSP tracker protocol >> >> Aug 2011 >> >> Submit PPSP peer protocol to IESG as Proposed Standard >> >> Aug 2011 >> >> Submit PPSP tracker protocol to IESG as Proposed Standard >> >> Nov 2011 >> >> Working Group Last Call of usage document >> >> Nov 2011 >> >> Working Group Last Call of mobility BCP document >> >> Jan 2012 >> >> Submit usage document to IESG as Informational document >> >> Jan 2012 >> >> Submit mobility BCP document to IESG as Informational document >> >> Apr 2012 >> >> Dissolve or re-charter >> >> >> >> ________________________________ >> zhangyunfei >> 2009-09-10 >> >> > > > _______________________________________________ > ppsp mailing list > ppsp@ietf.org > https://www.ietf.org/mailman/listinfo/ppsp > > > --000e0cd5c380840f0104734413da Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
Thanks Lars for the reminding.The charter has been updated in the wiki= .Please=A0see http://trac.tools.ietf.org/area/tsv/trac/wiki/PPSP?version= =3D14=A0for the reference.
=A0
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Yunfei

= =A0
2009/9/10, Lars Eggert <lars.eggert@nokia.com>:
Hi,

in order to make sure= that the IESG and IAB have the latest BOF proposal when they make a decisi= on, it'd be good if you either updated the wiki too (since that's c= urrently listed as where the request is on http://trac.tools.ietf.org/bof/trac/wiki/Wik= iStart) or alternatively, replace the wiki with a pointer to the latest= relevant email.

Lars=20


On 2009-9-10, at= 9:23, zhangyunfei wrote:

Dear all,
=A0The foll= owing is the modified version of PPSP charter(An early version was publishe= d in the IETF PPSP wiki page).Please review it and any comments and suggest= ions are highly appreciated.

=A0 =A0 =A0 =A0 =A0BR
=A0 =A0 =A0 =A0 =A0 Yunfei
----------------= ----------------------------------------
Description of PPSP Working Gro= up:
The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is= chartered to develop standard signaling protocols (called PPSP protocols) = for multiple types of entities (e.g. intelligent endpoints, caches, content= distribution network nodes, and/or other edge devices) to participate in P= 2P streaming systems in both fixed and mobile Internet.

PPSP protocols include the PPSP tracker protocol =96 a signaling protoc= ol between =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer prot= ocol =96 a signaling protocol among =93PPSP peers=94. A PPSP tracker mainta= ins lists of participating PPSP peers, each for a specific channel or strea= ming file, and answers the queries from PPSP peers for candidate PPSP peers= . PPSP peers inform their status information to PPSP trackers, exchange the= ir chunk availability with other PPSP peers and/or PPSP trackers, and ask o= ther PPSP peers for wanted data.

This WG's primary tasks are to produce:
1. A =93problem statemen= t=94 document describing the problems, incentives, and scope of developing = the PPSP protocols, as well as common terminologies and concepts.

2.= A =93requirements=94 document listing the requirements on the designed PPS= P protocols (e.g., general functionality and performance requirements of PP= SP protocols or basic types of information that PPSP protocols should commu= nicate to facilitate P2P streaming).

3. An "architectural survey" document explaining the current = P2P streaming architectures, in particular tracker-based P2P streaming, and= key issues in best practice.

4. A proposed standard defining the PP= SP peer protocol. This protocol will define how PPSP peers advertise chunk = availability. The protocol will also define the requests and responses of c= hunks among PPSP peers.

5. A proposed standard defining the PPSP tracker protocol. This protoco= l will define how PPSP peers inform and request information from PPSP track= ers and how PPSP trackers reply to the requests.

6. A =93usage docum= ent=94 explaining how the protocols defined above, along with existing IETF= protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they = may be integrated together to produce complete P2P streaming systems.

7. Optionally a =94mobile usage document=94 (PPSP mobile BCP document) = to evaluate PPSP with and without Mobile IP support when there are a lot of= mobile peers in the system.

The work planned for the PPSP WG is dis= tinct from, but requires close participation with, work in other IETF WGs, = particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot mo= dify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determines that e= xtensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define such= extensions and present to the respective working groups.

The design of PPSP has to consider security/privacy issues. The protoco= l document will contain a complete description of the security/privacy issu= es that PPSP should address.

The following topics are excluded from = this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. using = TCP or UDP, unicast or multicast, etc.

2. Network coding mechanisms = in P2P streaming. Network coding may be used in P2P streaming, but its supp= ort is beyond the scope of current charter.

3. Play-out mechanisms including streaming control (e.g., pause, fast-f= orward, and rewind).

4. Algorithms that may be different in differen= t deployments (e.g., chunk selection, local storage strategies).

5. Research type questions related to P2P streaming. This WG will instead f= orward such questions to the IRTF P2PRG or other RG as appropriate. Example= s include cache management.
Goals and Milestones:
Apr 2010

Working Group Last Call for problem statement

Jun 2010

Submit= problem statement to IESG as Informational document

Aug 2010
Working Group Last Call for architecture survey

Aug 2010

Working Group Last Call for requirements

Oct
2010

Submit a= rchitecture survey to IESG as Informational document

Oct 2010
Submit requirements to IESG as Informational document

Apr 2011

Working Group Last Call for PPSP peer protocol

Apr
2011
Working Group Last Call for PPSP tracker protocol

Aug 2011

= Submit PPSP peer protocol to IESG as Proposed Standard

Aug 2011

Submit PPSP tracker protocol to IESG as Proposed Standard

Nov 20= 11

Working Group Last Call of usage document

Nov 2011

= Working Group Last Call of mobility BCP document

Jan 2012

Submit usage document to IESG as Informational document

Jan 2012
=
Submit mobility BCP document to IESG as Informational document

A= pr 2012

Dissolve or re-charter



______________________= __________
zhangyunfei
2009-09-10
<ATT00001..txt>


_______________________________________________
ppsp mailin= g list
ppsp@ietf.org
https://www.ietf.org= /mailman/listinfo/ppsp



--000e0cd5c380840f0104734413da-- From hishigh@gmail.com Thu Sep 10 19:43:35 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 31BA33A687F for ; Thu, 10 Sep 2009 19:43:35 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ys+NURTGouEB for ; Thu, 10 Sep 2009 19:43:33 -0700 (PDT) Received: from mail-pz0-f190.google.com (mail-pz0-f190.google.com [209.85.222.190]) by core3.amsl.com (Postfix) with ESMTP id 55B293A6953 for ; Thu, 10 Sep 2009 19:43:23 -0700 (PDT) Received: by pzk28 with SMTP id 28so546710pzk.20 for ; Thu, 10 Sep 2009 19:43:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=v7tQc9ncL1Oq1x+O1gOFooex9OJoohySXA9DKyW/4IA=; b=LsPERTaSi89mDuDz/AzCIN2bwOignrLKKqW3a4kh7q+DQErW+2jhOq3uqlf2LT8xA0 9KXIckTsEj+UO9YTzuC3/uKX6p9FsZdJ9LIPASjE37ZBXs2vDvvR8b+218//3x/KBCTy VriWS9KRwQedXko3Aw61aocsetez2O9rs7+EY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=fP1rRF9Txg0h9UDkOBTyihYYDFZhxBqDpJfQpo+z9bphA65gFnoW8EszGDSZ/NCsU7 TwIBmpgA1fOrGytESbFizRs02Eg7bqzvvCouyEizOd+KvfpU5NvRWJkvPV8dTKdkHAZt Fe7EKVwd5I1BgDHkwy/kLVitatBXgXp7X/+z8= MIME-Version: 1.0 Received: by 10.143.129.3 with SMTP id g3mr225028wfn.240.1252637032518; Thu, 10 Sep 2009 19:43:52 -0700 (PDT) In-Reply-To: References: <200909101423493286131@chinamobile.com> Date: Fri, 11 Sep 2009 10:43:52 +0800 Message-ID: <8bd755250909101943l1c7bad35p3608cb17fc686f21@mail.gmail.com> From: yunfei zhang To: "Schmidt, Christian 1. (NSN - DE/Munich)" Content-Type: multipart/alternative; boundary=000e0cd5c3805b1423047344493d Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Sep 2009 02:43:35 -0000 --000e0cd5c3805b1423047344493d Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Hi Christian, Thanks for the comments.Please see inline reply. BR Yunfei 2009/9/10, Schmidt, Christian 1. (NSN - DE/Munich) < christian.1.schmidt@nsn.com>: > > Hi Yunfei, > after reading your charter proposal, a text proposal and 2 questions for > clarifications. > > Best Regards > Christian Schmidt > > > > Proposed new text for more transparency in main description: > > Old text: > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP protocols) > for multiple types of entities (e.g. intelligent endpoints, caches, conte= nt > distribution network nodes, and/or other edge devices) to participate in = P2P > streaming systems in both fixed and mobile Internet. > > > PPSP protocols include the PPSP tracker protocol =96 a signaling protocol > between =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer proto= col =96 a > signaling protocol among =93PPSP peers=94. A PPSP tracker maintains lists= of > participating PPSP peers, each for a specific channel or streaming file, = and > answers the queries from PPSP peers for candidate PPSP peers. PPSP peers > inform their status information to PPSP trackers, exchange their chunk > availability with other PPSP peers and/or PPSP trackers, and ask other PP= SP > peers for wanted data. > > > > New text: > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP protocols)= for > P2P streaming systems in both fixed and mobile Internet. Participating > entities could be intelligent endpoints, caches, content distribution > network nodes, and/or other edge devices. > Good revision.I think it's more clear. > For a specific channel or streaming file, a PPSP tracker maintains lists = of > particiating PPSP peers. The PPSP tracker answers queries from PPSP peers > for candidate PPSP peers. PPSP peers provide their status information to > PPSP trackers, exchange their chunk availability with other PPSP peers > and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP > protocols include the PPSP tracker protocol =96 a signaling protocol betw= een > =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer protocol =96 = a signaling > protocol among =93PPSP peers=94. > The first sentence is better understood after your revision, thanks.As for the order of the clauses, I suggest that it would be better if we explicitl= y state the scope of the WG first. > Architectural survey > 3. An "architectural survey" document explaining the current P2P streamin= g > architectures, in particular tracker-based P2P streaming, and key issues = in > best practice. > It is good to have a description of the current P2P streaming architectur= e. > What is missing is the relation to the PPSP work. Will it contain a propo= sal > for the PPSP architecture? > Yes,it will.Thanks for the suggestion. > Usage document > 6. A =93usage document=94 explaining how the protocols defined above, al= ong > with existing IETF protocols, such as RELAOD, ALTO and RTSP, can > inter-operate; and how they may be integrated together to produce complet= e > P2P streaming systems. > This sounds more like a "interop document". Was this the intention? > In fact, PPSP doesn't equal to a *whole* p2p streaming system.To develop a P2P streaming system, we need some related protocols to support just as the component architecture proposed in last bar bof.This is the intention why w= e need the "interop document". > > > > > > > > ------------------------------ > *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf O= f > *ext zhangyunfei > *Sent:* Thursday, September 10, 2009 8:24 AM > *To:* ppsp@ietf.org > *Subject:* [ppsp] ppsp charter discussion > > > * > > *** > > *Dear all,* > > * The following is the modified version of PPSP charter(An early versio= n > was published in the IETF PPSP wiki page).Please review it and any commen= ts > and suggestions are highly appreciated.* > > ** > > * BR* > > * Yunfei* > > *--------------------------------------------------------* > > ***Description of PPSP Working Group:* > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP protocols) > for multiple types of entities (e.g. intelligent endpoints, caches, conte= nt > distribution network nodes, and/or other edge devices) to participate in = P2P > streaming systems in both fixed and mobile Internet. > > > PPSP protocols include the PPSP tracker protocol =96 a signaling protocol > between =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer proto= col =96 a > signaling protocol among =93PPSP peers=94. A PPSP tracker maintains lists= of > participating PPSP peers, each for a specific channel or streaming file, = and > answers the queries from PPSP peers for candidate PPSP peers. PPSP peers > inform their status information to PPSP trackers, exchange their chunk > availability with other PPSP peers and/or PPSP trackers, and ask other PP= SP > peers for wanted data. > > > > This WG's primary tasks are to produce: > 1. A =93problem statement=94 document describing the problems, incentives= , and > scope of developing the PPSP protocols, as well as common terminologies a= nd > concepts. > > > > 2. A =93requirements=94 document listing the requirements on the designed= PPSP > protocols (e.g., general functionality and performance requirements of PP= SP > protocols or basic types of information that PPSP protocols should > communicate to facilitate P2P streaming). > > > 3. An "architectural survey" document explaining the current P2P streamin= g > architectures, in particular tracker-based P2P streaming, and key issues = in > best practice. > > > 4. A proposed standard defining the PPSP peer protocol. This protocol wil= l > define how PPSP peers advertise chunk availability. The protocol will als= o > define the requests and responses of chunks among PPSP peers. > > > > 5. A proposed standard defining the PPSP tracker protocol. This protocol > will define how PPSP peers inform and request information from PPSP track= ers > and how PPSP trackers reply to the requests. > > > > 6. A =93usage document=94 explaining how the protocols defined above, alo= ng > with existing IETF protocols, such as RELAOD, ALTO and RTSP, can > inter-operate; and how they may be integrated together to produce complet= e > P2P streaming systems. > > > > 7. Optionally a =94mobile usage document=94 (PPSP mobile BCP document) to > evaluate PPSP with and without Mobile IP support when there are a lot of > mobile peers in the system. > > > The work planned for the PPSP WG is distinct from, but requires close > participation with, work in other IETF WGs, particularly P2PSIP, ALTO and > MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, = and > MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMU= SIC > are needed, PPSP will seek to define such extensions and present to the > respective working groups. > > > The design of PPSP has to consider security/privacy issues. The protocol > document will contain a complete description of the security/privacy issu= es > that PPSP should address. > > > > The following topics are excluded from this WG's scope: > 1. Transport mechanisms for data transmission among PPSP peers, e.g. usin= g > TCP or UDP, unicast or multicast, etc. > > > 2. Network coding mechanisms in P2P streaming. Network coding may be used > in P2P streaming, but its support is beyond the scope of current charter. > > > > 3. Play-out mechanisms including streaming control (e.g., pause, > fast-forward, and rewind). > > > > 4. Algorithms that may be different in different deployments (e.g., chunk > selection, local storage strategies). > > > > 5. Research type questions related to P2P streaming. This WG will instead > forward such questions to the IRTF P2PRG or other RG as appropriate. > Examples include cache management. > > *Goals and Milestones:* > > Apr 2010 > > Working Group Last Call for problem statement > > Jun 2010 > > Submit problem statement to IESG as Informational document > > Aug 2010 > > Working Group Last Call for architecture survey > > Aug 2010 > > Working Group Last Call for requirements > > Oct > > 2010 > > Submit architecture survey to IESG as Informational document > > Oct 2010 > > Submit requirements to IESG as Informational document > > Apr 2011 > > Working Group Last Call for PPSP peer protocol > > Apr > > 2011 > > Working Group Last Call for PPSP tracker protocol > > Aug 2011 > > Submit PPSP peer protocol to IESG as Proposed Standard > > Aug 2011 > > Submit PPSP tracker protocol to IESG as Proposed Standard > > Nov 2011 > > Working Group Last Call of usage document > > Nov 2011 > > Working Group Last Call of mobility BCP document > > Jan 2012 > > Submit usage document to IESG as Informational document > > Jan 2012 > > Submit mobility BCP document to IESG as Informational document > > Apr 2012 > > Dissolve or re-charter > > > > ------------------------------ > zhangyunfei > 2009-09-10 > > _______________________________________________ > ppsp mailing list > ppsp@ietf.org > https://www.ietf.org/mailman/listinfo/ppsp > > --000e0cd5c3805b1423047344493d Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
Hi Christian,
=A0=A0 Thanks for the comments.Please see inline reply.
=A0
BR
Yunfei

=A0
2009/9/10, Schmidt, Christian 1. (NSN - DE= /Munich) <christian.1.sch= midt@nsn.com>:
Hi Yu= nfei,
after= reading your charter proposal, a text proposal and 2 questions for clarifi= cations.
=A0
Best = Regards
Chris= tian Schmidt
=A0
=A0
=A0
Proposed n= ew text=A0for more transparency in main description:

<= span>Old text:

<= font color=3D"#000000">The Peer-to-Peer (P2P) Streaming Protocol working gr= oup (PPSP WG) is chartered to develop standard signaling protocols (called = PPSP protocols) for multiple types of entities (e.g. intelligent endpoints,= caches, content distribution network nodes, and/or other edge devices) to = participate in P2P streaming systems in both fixed and mobile Internet.

<= font face=3D"Arial" size=3D"2">
PPSP prot= ocols include the PPSP tracker protocol =96 a signaling protocol between = =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer protocol =96 a = signaling protocol among =93PPSP peers=94. A PPSP tracker maintains lists o= f participating PPSP peers, each for a specific channel or streaming file, = and answers the queries from PPSP peers for candidate PPSP peers. PPSP peer= s inform their status information to PPSP trackers, exchange their chunk av= ailability with other PPSP peers and/or PPSP trackers, and ask other PPSP p= eers for wanted data.

<= /span>=A0

<= span lang=3D"EN-US" style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New= '">New=A0text:

<= span lang=3D"EN-US" style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New= '">The Peer-to-Peer (P2P) Streaming Protocol workin= g group (PPSP WG) is chartered to develop standard signaling protocols (cal= led PPSP protocols)=A0for P2P streaming systems in both fixed = and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, an= d/or other edge devices.

=A0
Good revision.I think it'= ;s more clear.

=A0
For a specific channel o= r streaming file, a PPSP tracker maintains lists of particiating PPSP peers= . The PPSP tracker answers queries from PPSP peers for candidate PPSP peers= . PPSP peers=A0provide their status information to PPSP trackers, exchange = their chunk availability with other PPSP peers and/or PPSP trackers, and as= k other PPSP peers for wanted data. PPSP protocols include the PPSP tracker= protocol =96 a signaling protocol between =93PPSP trackers=94 and =93PPSP = peers=94, and the PPSP peer protocol =96 a signaling protocol among =93PPSP= peers=94.
=A0
The first sentence is better= understood after your revision, thanks.As for the order of the clauses, I = suggest that it would be better if we explicitly state the scope of the WG = first.

=A0
Architectural survey
3. An &quo= t;architectural survey" document explaining the current P2P streaming = architectures, in particular tracker-based P2P streaming, and key issues in= best practice.
It is good to have a description of the current P2P streaming archi= tecture. What is missing is the relation to the PPSP work. Will it contain = a proposal for=A0the PPSP architecture?
=A0
Yes,it will.Thanks for the s= uggestion.

=A0
Usage document
6. A =93usage document=94 explaining how the protocol= s defined above, along with existing IETF protocols, such as RELAOD, ALTO a= nd RTSP, can inter-operate; and how they may be integrated together to prod= uce complete P2P streaming systems.
This sounds more like a "interop document". Was this the = intention?
=A0
In fact, PPSP doesn't eq= ual to a *whole* p2p streaming system.To develop a P2P streaming system, we= need some related protocols to support just as the component architecture = proposed in last bar bof.This is the intention why we need the "intero= p document".

=A0
=A0
=A0
=A0
=A0
=A0
=A0

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei<= br> Sent: Thursday, September 10, 2009 8:24 AM
To: ppsp@ietf.org
Subject: [ppsp] ppsp cha= rter discussion

=A0

Dear all,

=A0=A0 The following is the modified version of PPSP cha= rter(An early version was published in the IETF PPSP wiki page).Please revi= ew it and any comments and suggestions are highly appreciated.

=A0

=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 BR

=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Yunfei

--------------------------------------------------------=

Description of PPSP Working Group:

T= he Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is charter= ed to develop standard signaling protocols (called PPSP protocols) for mult= iple types of entities (e.g. intelligent endpoints, caches, content distrib= ution network nodes, and/or other edge devices) to participate in P2P strea= ming systems in both fixed and mobile Internet.

<= br>PPSP protocols include the PPSP tracker protocol =96 a signaling protoco= l between =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer proto= col =96 a signaling protocol among =93PPSP peers=94. A PPSP tracker maintai= ns lists of participating PPSP peers, each for a specific channel or stream= ing file, and answers the queries from PPSP peers for candidate PPSP peers.= PPSP peers inform their status information to PPSP trackers, exchange thei= r chunk availability with other PPSP peers and/or PPSP trackers, and ask ot= her PPSP peers for wanted data.

= =A0

This WG's primary tasks are to produce:
1. A = =93problem statement=94 document describing the problems, incentives, and s= cope of developing the PPSP protocols, as well as common terminologies and = concepts.

= =A0

2= . A =93requirements=94 document listing the requirements on the designed PP= SP protocols (e.g., general functionality and performance requirements of P= PSP protocols or basic types of information that PPSP protocols should comm= unicate to facilitate P2P streaming).

<= br>3. An "architectural survey" document explaining the current P= 2P streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice.


4. A proposed standard defining the PPSP peer pr= otocol. This protocol will define how PPSP peers advertise chunk availabili= ty. The protocol will also define the requests and responses of chunks amon= g PPSP peers.

= =A0

5. A proposed standard defining the PPSP tracker pro= tocol. This protocol will define how PPSP peers inform and request informat= ion from PPSP trackers and how PPSP trackers reply to the requests.<= span lang=3D"EN-US">

= =A0

6= . A =93usage document=94 explaining how the protocols defined above, along = with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-oper= ate; and how they may be integrated together to produce complete P2P stream= ing systems.

= =A0

7= . Optionally a =94mobile usage document=94 (PPSP mobile BCP document) to ev= aluate PPSP with and without Mobile IP support when there are a lot of mobi= le peers in the system.

<= br>The work planned for the PPSP WG is distinct from, but requires close pa= rticipation with, work in other IETF WGs, particularly P2PSIP, ALTO and MMU= SIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, and M= MUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMUSIC= are needed, PPSP will seek to define such extensions and present to the re= spective working groups.

<= br>The design of PPSP has to consider security/privacy issues. The protocol= document will contain a complete description of the security/privacy issue= s that PPSP should address.

= =A0

T= he following topics are excluded from this WG's scope:
1. Transport = mechanisms for data transmission among PPSP peers, e.g. using TCP or UDP, u= nicast or multicast, etc.

<= br>2. Network coding mechanisms in P2P streaming. Network coding may be use= d in P2P streaming, but its support is beyond the scope of current charter.=

= =A0

3= . Play-out mechanisms including streaming control (e.g., pause, fast-forwar= d, and rewind).

= =A0

4= . Algorithms that may be different in different deployments (e.g., chunk se= lection, local storage strategies).

= =A0

5= . Research type questions related to P2P streaming. This WG will instead fo= rward such questions to the IRTF P2PRG or other RG as appropriate. Examples= include cache management.

A= pr 2010

W= orking Group Last Call for problem statement

J= un 2010

S= ubmit problem statement to IESG as Informational document

A= ug 2010

W= orking Group Last Call for architecture survey

A= ug 2010

W= orking Group Last Call for requirements

O= ct

2= 010

S= ubmit architecture survey to IESG as Informational document

=

O= ct 2010

S= ubmit requirements to IESG as Informational document

A= pr 2011

W= orking Group Last Call for PPSP peer protocol

A= pr

2= 011

W= orking Group Last Call for PPSP tracker protocol

A= ug 2011

S= ubmit PPSP peer protocol to IESG as Proposed Standard

A= ug 2011

S= ubmit PPSP tracker protocol to IESG as Proposed Standard

N= ov 2011

W= orking Group Last Call of usage document

N= ov 2011

W= orking Group Last Call of mobility BCP document

J= an 2012

S= ubmit usage document to IESG as Informational document

J= an 2012

S= ubmit mobility BCP document to IESG as Informational document

A= pr 2012

D= issolve or re-charter

= =A0

=A0
zhangyunfei
2009-09-10

_____________= __________________________________
ppsp mailing list
p= psp@ietf.org
https://www.ietf.org= /mailman/listinfo/ppsp


--000e0cd5c3805b1423047344493d-- From hishigh@gmail.com Thu Sep 10 19:46:58 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id A9BA43A6822 for ; Thu, 10 Sep 2009 19:46:58 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id FDtYw7waqr2O for ; Thu, 10 Sep 2009 19:46:56 -0700 (PDT) Received: from mail-px0-f181.google.com (mail-px0-f181.google.com [209.85.216.181]) by core3.amsl.com (Postfix) with ESMTP id C3D043A6819 for ; Thu, 10 Sep 2009 19:46:56 -0700 (PDT) Received: by pxi11 with SMTP id 11so534825pxi.17 for ; Thu, 10 Sep 2009 19:47:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=CI6zF5PEYusnb/6TrptT02Qlv8cHaVRF4asKO2YjRk0=; b=RA8i4OuXaNgnwScws/n//VRPhM3K39KIFReV/4N2RNVJR3AFODeaHJ34Xu+14bRxXP lfhuN1v4eXOonyymjM5QgRIzGUXZYGUbJQTgaeq0yXA5gUZbiqGLLRGoojfL4LroUfgH /1xucclPzFMahwuTPB46mx9pSs6p1rHY1ZKWw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=L7hjJRHqMemnd1omTNH9tkb2x6oa1c1HuRy4fhPdiJBsElTZF87GsPDDepQ3f03E4F SJpDTdOYQDhK3s1g0Q3lp0TNwE10yFWhlAQdKR6f/WYTAL/pGMlbjMYYeuT4zw3yo/AZ RFuKumdwPNBxjOVxc2GLKCZZ9vbyjun48Qnp0= MIME-Version: 1.0 Received: by 10.142.250.6 with SMTP id x6mr226387wfh.292.1252637249442; Thu, 10 Sep 2009 19:47:29 -0700 (PDT) In-Reply-To: <0KPR00J4UIUXYJ@szxml02-in.huawei.com> References: <0KPR00J4UIUXYJ@szxml02-in.huawei.com> Date: Fri, 11 Sep 2009 10:47:29 +0800 Message-ID: <8bd755250909101947i5859400dsb1ecdcb516b8d5c9@mail.gmail.com> From: yunfei zhang To: Ning Zong Content-Type: multipart/alternative; boundary=001636ed6a194913d40473445696 Cc: "ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Sep 2009 02:46:58 -0000 --001636ed6a194913d40473445696 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable I agree with Ning's opinion.Thanks,Lucy. Yunfei 2009/9/10, Ning Zong : > > Hi, Lucy > > The participating entities in the first paragraph include both peers and > trackers in P2P streaming systems. In second paragraph, we discuss the ro= les > of trackers - assuming that people know the basic meaning of peers. > Formal definitions of PPSP peers and PPSP trackers are defined in Problem > Statement Draft. > > BR, > Ning Zong > > ------------------------------ > > Hi YunFei and Christian, > > > > One clarification: =93participating entities=94 listed in the text are th= e peer > in P2P streaming systems, is that right? Thus, =93PPSP=94 trackers are an= other > participator in the systems. Suggest stating that clearly in the first > paragraph. > > > > Cheers, > > Lucy > > > ------------------------------ > > *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf O= f > *Schmidt, Christian 1. (NSN - DE/Munich) > *Sent:* Thursday, September 10, 2009 3:03 AM > *To:* ext zhangyunfei; ppsp@ietf.org > *Subject:* Re: [ppsp] ppsp charter discussion > > > > Hi Yunfei, > > after reading your charter proposal, a text proposal and 2 questions for > clarifications. > > > > Best Regards > > Christian Schmidt > > > > > > > > Proposed new text for more transparency in main description: > > Old text: > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP protocols) > for multiple types of entities (e.g. intelligent endpoints, caches, conte= nt > distribution network nodes, and/or other edge devices) to participate in = P2P > streaming systems in both fixed and mobile Internet. > > > PPSP protocols include the PPSP tracker protocol =96 a signaling protocol > between =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer proto= col =96 a > signaling protocol among =93PPSP peers=94. A PPSP tracker maintains lists= of > participating PPSP peers, each for a specific channel or streaming file, = and > answers the queries from PPSP peers for candidate PPSP peers. PPSP peers > inform their status information to PPSP trackers, exchange their chunk > availability with other PPSP peers and/or PPSP trackers, and ask other PP= SP > peers for wanted data. > > > > New text: > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP > protocols) for P2P streaming systems in both fixed and mobile Internet. > Participating entities could be intelligent endpoints, caches, content > distribution network nodes, and/or other edge devices. > > > > For a specific channel or streaming file, a PPSP tracker maintains lists = of > particiating PPSP peers. The PPSP tracker answers queries from PPSP peers > for candidate PPSP peers. PPSP peers provide their status information to > PPSP trackers, exchange their chunk availability with other PPSP peers > and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP > protocols include the PPSP tracker protocol =96 a signaling protocol betw= een > =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer protocol =96 = a signaling > protocol among =93PPSP peers=94. > > > > Architectural survey > > 3. An "architectural survey" document explaining the current P2P streamin= g > architectures, in particular tracker-based P2P streaming, and key issues = in > best practice. > > It is good to have a description of the current P2P streaming architectur= e. > What is missing is the relation to the PPSP work. Will it contain a propo= sal > for the PPSP architecture? > > > > Usage document > > 6. A =93usage document=94 explaining how the protocols defined above, alo= ng > with existing IETF protocols, such as RELAOD, ALTO and RTSP, can > inter-operate; and how they may be integrated together to produce complet= e > P2P streaming systems. > > This sounds more like a "interop document". Was this the intention? > > > > > > > > > > > > > > > > > ------------------------------ > > *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf O= f > *ext zhangyunfei > *Sent:* Thursday, September 10, 2009 8:24 AM > *To:* ppsp@ietf.org > *Subject:* [ppsp] ppsp charter discussion > > ** > > *Dear all,* > > * The following is the modified version of PPSP charter(An early versio= n > was published in the IETF PPSP wiki page).Please review it and any commen= ts > and suggestions are highly appreciated.* > > > > * BR* > > * Yunfei* > > *--------------------------------------------------------* > > *Description of PPSP Working Group:* > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP protocols) > for multiple types of entities (e.g. intelligent endpoints, caches, conte= nt > distribution network nodes, and/or other edge devices) to participate in = P2P > streaming systems in both fixed and mobile Internet. > > > PPSP protocols include the PPSP tracker protocol =96 a signaling protocol > between =93PPSP trackers=94 and =93PPSP peers=94, and the PPSP peer proto= col =96 a > signaling protocol among =93PPSP peers=94. A PPSP tracker maintains lists= of > participating PPSP peers, each for a specific channel or streaming file, = and > answers the queries from PPSP peers for candidate PPSP peers. PPSP peers > inform their status information to PPSP trackers, exchange their chunk > availability with other PPSP peers and/or PPSP trackers, and ask other PP= SP > peers for wanted data. > > > > This WG's primary tasks are to produce: > 1. A =93problem statement=94 document describing the problems, incentives= , and > scope of developing the PPSP protocols, as well as common terminologies a= nd > concepts. > > > > 2. A =93requirements=94 document listing the requirements on the designed= PPSP > protocols (e.g., general functionality and performance requirements of PP= SP > protocols or basic types of information that PPSP protocols should > communicate to facilitate P2P streaming). > > > 3. An "architectural survey" document explaining the current P2P streamin= g > architectures, in particular tracker-based P2P streaming, and key issues = in > best practice. > > > 4. A proposed standard defining the PPSP peer protocol. This protocol wil= l > define how PPSP peers advertise chunk availability. The protocol will als= o > define the requests and responses of chunks among PPSP peers. > > > > 5. A proposed standard defining the PPSP tracker protocol. This protocol > will define how PPSP peers inform and request information from PPSP track= ers > and how PPSP trackers reply to the requests. > > > > 6. A =93usage document=94 explaining how the protocols defined above, alo= ng > with existing IETF protocols, such as RELAOD, ALTO and RTSP, can > inter-operate; and how they may be integrated together to produce complet= e > P2P streaming systems. > > > > 7. Optionally a =94mobile usage document=94 (PPSP mobile BCP document) to > evaluate PPSP with and without Mobile IP support when there are a lot of > mobile peers in the system. > > > The work planned for the PPSP WG is distinct from, but requires close > participation with, work in other IETF WGs, particularly P2PSIP, ALTO and > MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, = and > MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMU= SIC > are needed, PPSP will seek to define such extensions and present to the > respective working groups. > > > The design of PPSP has to consider security/privacy issues. The protocol > document will contain a complete description of the security/privacy issu= es > that PPSP should address. > > > > The following topics are excluded from this WG's scope: > 1. Transport mechanisms for data transmission among PPSP peers, e.g. usin= g > TCP or UDP, unicast or multicast, etc. > > > 2. Network coding mechanisms in P2P streaming. Network coding may be used > in P2P streaming, but its support is beyond the scope of current charter. > > > > 3. Play-out mechanisms including streaming control (e.g., pause, > fast-forward, and rewind). > > > > 4. Algorithms that may be different in different deployments (e.g., chunk > selection, local storage strategies). > > > > 5. Research type questions related to P2P streaming. This WG will instead > forward such questions to the IRTF P2PRG or other RG as appropriate. > Examples include cache management. > > *Goals and Milestones:* > > Apr 2010 > > Working Group Last Call for problem statement > > Jun 2010 > > Submit problem statement to IESG as Informational document > > Aug 2010 > > Working Group Last Call for architecture survey > > Aug 2010 > > Working Group Last Call for requirements > > Oct > > 2010 > > Submit architecture survey to IESG as Informational document > > Oct 2010 > > Submit requirements to IESG as Informational document > > Apr 2011 > > Working Group Last Call for PPSP peer protocol > > Apr > > 2011 > > Working Group Last Call for PPSP tracker protocol > > Aug 2011 > > Submit PPSP peer protocol to IESG as Proposed Standard > > Aug 2011 > > Submit PPSP tracker protocol to IESG as Proposed Standard > > Nov 2011 > > Working Group Last Call of usage document > > Nov 2011 > > Working Group Last Call of mobility BCP document > > Jan 2012 > > Submit usage document to IESG as Informational document > > Jan 2012 > > Submit mobility BCP document to IESG as Informational document > > Apr 2012 > > Dissolve or re-charter > > > > > ------------------------------ > > zhangyunfei > > 2009-09-10 > ------------------------------ > > _______________________________________________ > ppsp mailing list > ppsp@ietf.org > https://www.ietf.org/mailman/listinfo/ppsp > > --001636ed6a194913d40473445696 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
I agree with Ning's opinion.Thanks,Lucy.
=A0
Yunfei

=A0
2009/9/10, Ning Zong <zongning@huawei.com>:
Hi, Lucy
=A0
The participating entities in the first paragraph include both peers a= nd trackers in P2P streaming systems. In second paragraph, we discuss the r= oles of=A0trackers -=A0assuming that people know the basic meaning of peers= .
Formal definitions of PPSP peers and PPSP trackers are defined in Prob= lem Statement Draft.
=A0
BR,
Ning Zong
=A0

Hi YunFei and Christian,

=A0

One clarification: =93participating= entities=94 listed in the text are the peer in P2P streaming systems, is t= hat right? Thus, =93PPSP=94 trackers are another participator in the system= s. =A0Suggest stating that clearly in the first paragraph.

=A0

Cheers,

Lucy

=A0

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, Christian 1. (NS= N - DE/Munich)
Sent: Thursday, September 1= 0, 2009 3:03 AM
To: ext = zhangyunfei; ppsp@ietf.org
Subject: Re: [ppsp] ppsp ch= arter discussion

Hi Yunfei,

after reading your charter proposal= , a text proposal and 2 questions for clarifications.

=A0

Best Regards

Christian Schmidt

=A0

=A0

=A0

Proposed new = text=A0for more transparency in main description:

Old text:

The Peer-to= -Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to deve= lop standard signaling protocols (called PPSP protocols) for multiple types= of entities (e.g. intelligent endpoints, caches, content distribution netw= ork nodes, and/or other edge devices) to participate in P2P streaming syste= ms in both fixed and mobile Internet.


PPSP protocols include the PPSP track= er protocol =96 a signaling protocol between =93PPSP trackers=94 and =93PPS= P peers=94, and the PPSP peer protocol =96 a signaling protocol among =93PP= SP peers=94. A PPSP tracker maintains lists of participating PPSP peers, ea= ch for a specific channel or streaming file, and answers the queries from P= PSP peers for candidate PPSP peers. PPSP peers inform their status informat= ion to PPSP trackers, exchange their chunk availability with other PPSP pee= rs and/or PPSP trackers, and ask other PPSP peers for wanted data.

=A0

New=A0text:=

The Peer-to-P= eer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develo= p standard signaling protocols (called PPSP protocols)=A0for P2P streaming = systems in both fixed and mobile Internet. Participating entities could be = intelligent endpoints, caches, content distribution network nodes, and/or o= ther edge devices.

=A0

For a specifi= c channel or streaming file, a PPSP tracker maintains lists of particiating= PPSP peers. The PPSP tracker answers queries from PPSP peers for candidate= PPSP peers. PPSP peers=A0provide their status information to PPSP trackers= , exchange their chunk availability with other PPSP peers and/or PPSP track= ers, and ask other PPSP peers for wanted data. PPSP protocols include the P= PSP tracker protocol =96 a signaling protocol between =93PPSP trackers=94 a= nd =93PPSP peers=94, and the PPSP peer protocol =96 a signaling protocol am= ong =93PPSP peers=94.

Architectural= survey

3. An "architectural survey" do= cument explaining the current P2P streaming architectures, in particular tr= acker-based P2P streaming, and key issues in best practice.

It is good to= have a description of the current P2P streaming architecture. What is miss= ing is the relation to the PPSP work. Will it contain a proposal for=A0the = PPSP architecture?

Usage documen= t

6. A =93usa= ge document=94 explaining how the protocols defined above, along with exist= ing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and h= ow they may be integrated together to produce complete P2P streaming system= s.

This sounds m= ore like a "interop document". Was this the intention?

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei
Sent: Thursday, September 1= 0, 2009 8:24 AM
To: ppsp@ietf.org
Subject: [ppsp] ppsp charte= r discussion

=A0


Dear all,

=A0=A0 The followin= g is the modified version of PPSP charter(An early version was published in= the IETF PPSP wiki page).Please review it and any comments and suggestions= are highly appreciated.

=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0 BR

=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0 Yunfei

-------------------= -------------------------------------

Description of PPSP= Working Group:

The Peer-to-Peer (P2P) Streaming Protocol= working group (PPSP WG) is chartered to develop standard signaling protoco= ls (called PPSP protocols) for multiple types of entities (e.g. intelligent= endpoints, caches, content distribution network nodes, and/or other edge d= evices) to participate in P2P streaming systems in both fixed and mobile In= ternet.


PPSP protocols include the PPSP track= er protocol =96 a signaling protocol between =93PPSP trackers=94 and =93PPS= P peers=94, and the PPSP peer protocol =96 a signaling protocol among =93PP= SP peers=94. A PPSP tracker maintains lists of participating PPSP peers, ea= ch for a specific channel or streaming file, and answers the queries from P= PSP peers for candidate PPSP peers. PPSP peers inform their status informat= ion to PPSP trackers, exchange their chunk availability with other PPSP pee= rs and/or PPSP trackers, and ask other PPSP peers for wanted data. <= /font>

=A0

<= span style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'">This WG&= #39;s primary tasks are to produce:
1. A =93problem statement=94 documen= t describing the problems, incentives, and scope of developing the PPSP pro= tocols, as well as common terminologies and concepts.

=A0

2. A =93requirements=94 document listing = the requirements on the designed PPSP protocols (e.g., general functionalit= y and performance requirements of PPSP protocols or basic types of informat= ion that PPSP protocols should communicate to facilitate P2P streaming).


3. An "architectural survey"= ; document explaining the current P2P streaming architectures, in particula= r tracker-based P2P streaming, and key issues in best practice.

<= span style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'">
4. A= proposed standard defining the PPSP peer protocol. This protocol will defi= ne how PPSP peers advertise chunk availability. The protocol will also defi= ne the requests and responses of chunks among PPSP peers.

=A0

<= span style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'">5. A pro= posed standard defining the PPSP tracker protocol. This protocol will defin= e how PPSP peers inform and request information from PPSP trackers and how = PPSP trackers reply to the requests.

=A0

6. A =93usage document=94 explaining how = the protocols defined above, along with existing IETF protocols, such as RE= LAOD, ALTO and RTSP, can inter-operate; and how they may be integrated toge= ther to produce complete P2P streaming systems.

=A0

7. Optionally a =94mobile usage document= =94 (PPSP mobile BCP document) to evaluate PPSP with and without Mobile IP = support when there are a lot of mobile peers in the system.


The work planned for the PPSP WG is d= istinct from, but requires close participation with, work in other IETF WGs= , particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot = modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determines that= extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define su= ch extensions and present to the respective working groups.


The design of PPSP has to consider se= curity/privacy issues. The protocol document will contain a complete descri= ption of the security/privacy issues that PPSP should address.

=A0

The following topics are excluded from th= is WG's scope:
1. Transport mechanisms for data transmission among P= PSP peers, e.g. using TCP or UDP, unicast or multicast, etc.<= /p>


2. Network coding mechanisms in P2P s= treaming. Network coding may be used in P2P streaming, but its support is b= eyond the scope of current charter.

=A0

3. Play-out mechanisms including streamin= g control (e.g., pause, fast-forward, and rewind).

=A0

4. Algorithms that may be different in di= fferent deployments (e.g., chunk selection, local storage strategies).

=A0

5. Research type questions related to P2P= streaming. This WG will instead forward such questions to the IRTF P2PRG o= r other RG as appropriate. Examples include cache management.=

Goals and Milestone= s:

Apr 2010

Working Group Last Call for problem state= ment

Jun 2010

Submit problem statement to IESG as Infor= mational document

Aug 2010

Working Group Last Call for architecture = survey

Aug 2010

Working Group Last Call for requirements<= /span>

Oct

2010

Submit architecture survey to IESG as Inf= ormational document

Oct 2010

Submit requirements to IESG as Informatio= nal document

Apr 2011

Working Group Last Call for PPSP peer pro= tocol

Apr

2011

Working Group Last Call for PPSP tracker = protocol

Aug 2011

Submit PPSP peer protocol to IESG as Prop= osed Standard

Aug 2011

Submit PPSP tracker protocol to IESG as P= roposed Standard

Nov 2011

Working Group Last Call of usage document=

Nov 2011

Working Group Last Call of mobility BCP d= ocument

Jan 2012

Submit usage document to IESG as Informat= ional document

Jan 2012

Submit mobility BCP document to IESG as I= nformational document

Apr 2012

Dissolve or re-charter

=

=A0

=A0

zhangyunfei

2009-09-10

=

_______________________________________________
ppsp mailing l= ist
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp


--001636ed6a194913d40473445696-- From zongning@huawei.com Fri Sep 11 07:24:20 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id F0D653A6A96 for ; Fri, 11 Sep 2009 07:24:20 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -98.82 X-Spam-Level: X-Spam-Status: No, score=-98.82 tagged_above=-999 required=5 tests=[AWL=0.541, BAYES_00=-2.599, HTML_FONT_FACE_BAD=0.884, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, MIME_BASE64_TEXT=1.753, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oIExuX97qSu4 for ; Fri, 11 Sep 2009 07:24:18 -0700 (PDT) Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [119.145.14.64]) by core3.amsl.com (Postfix) with ESMTP id 3EFA33A68A8 for ; Fri, 11 Sep 2009 07:24:17 -0700 (PDT) Received: from huawei.com 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<0KPT001DG9D8NB@szxml01-in.huawei.com> References: <0KPT001DG9D8NB@szxml01-in.huawei.com> From: Ping Pan Date: Fri, 11 Sep 2009 08:55:56 -0700 Message-ID: <22d04a930909110855ia91ae20ofd8add8878c72a6c@mail.gmail.com> To: Ning Zong Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: "ppsp@ietf.org" Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Sep 2009 15:55:51 -0000 2009/9/11 Ning Zong > > Hi, Ping, > > Thank you for suggestions. I agree that narrow down our work is very impo= rtant and will make our work more clear. > I think the scope of PPSP is based on the components of P2P streaming sys= tems.=C2=A0We have narrowed the scope down to PPSP tracker and peer protoco= ls, as pointed in charter. Agree. Actually, this is the part that is really interesting. You guys have done some very impressive original work in this area. For many of us, it's been an eye-opener. :-) Thanks! > Regarding=C2=A0why the end users need=C2=A0to implement PPSP protocol, I = think you are right that current subscribers of main P2P streaming vendors = (e.g. PPlive) would=C2=A0not=C2=A0do that. But from=C2=A0other ISP's perspe= ctive, it maybe beneficial to run=C2=A0standard protocols. For instance, in= China Mobile's document, it is discussed that open protocol would have ben= efits esp. for mobile terminals, etc. Of course, we need more ISPs and stre= aming vendors to contribute to our work here. This is my original point. The work needs to be clarified and validated by the potential users, in terms of what specific problems it's solving, why they are problems, why PPSP is a preferred solution, and how the users (ISP's, media guys and end users) may benefit from it. In case of mobility, I wonder if it's the access/backhaul bandwidth that concerns the mobile providers, or the actual user applications running on the phones that make them tick. If latter, like to know why PPSP helps them. :-) > Anyway,=C2=A0whether the PPSP protocol=C2=A0applies to end users or not= =C2=A0depend=C2=A0on who would=C2=A0use PPSP protocol. In WG level, we are = just=C2=A0developing=C2=A0open protocols/tools which are=C2=A0missing parts= =C2=A0towards open P2P streaming system.=C2=A0Another words, we=C2=A0can (a= nd actually have) narrow down our scope in protocol level. But shall we nee= d to narrow down=C2=A0our work regarding who will use our protocol? Maybe n= o. OK. Please make sure the documents reflect this. Many thanks! Regards, - Ping > 2=C2=A0cents. > > BR, > Ning Zong > Regards, - Ping From lucyyong@huawei.com Fri Sep 11 09:04:10 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id EF6093A6983 for ; Fri, 11 Sep 2009 09:04:10 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.878 X-Spam-Level: X-Spam-Status: No, score=-1.878 tagged_above=-999 required=5 tests=[AWL=0.120, BAYES_00=-2.599, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LGL3qVFe-mEy for ; Fri, 11 Sep 2009 09:03:51 -0700 (PDT) Received: from usaga02-in.huawei.com (usaga02-in.huawei.com [206.16.17.70]) by core3.amsl.com (Postfix) with ESMTP id F332728C19D for ; Fri, 11 Sep 2009 09:03:23 -0700 (PDT) Received: from huawei.com (localhost [127.0.0.1]) by usaga02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPT001PFDYOPL@usaga02-in.huawei.com> for ppsp@ietf.org; Fri, 11 Sep 2009 09:04:01 -0700 (PDT) Received: from y736742 ([10.124.12.61]) by usaga02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPT008MLDYE3C@usaga02-in.huawei.com> for ppsp@ietf.org; Fri, 11 Sep 2009 09:03:59 -0700 (PDT) Date: Fri, 11 Sep 2009 11:03:49 -0500 From: Yong Lucy In-reply-to: <0KPT001DG9D8NB@szxml01-in.huawei.com> To: 'Ning Zong' , 'Ping Pan' Message-id: <003e01ca32f9$751c87d0$3d0c7c0a@china.huawei.com> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Mailer: Microsoft Office Outlook 11 Content-type: multipart/alternative; boundary="Boundary_(ID_yF8g8ZKYJRngw21Jwd3n1w)" Thread-index: Acoy6/J1UcciD7JVRhmV6Q0WZg3jowAB166w References: <0KPT001DG9D8NB@szxml01-in.huawei.com> Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Sep 2009 16:04:11 -0000 This is a multi-part message in MIME format. --Boundary_(ID_yF8g8ZKYJRngw21Jwd3n1w) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Hi Ning, I agree your statement here. But I think the charter description is not as clear as your statement here. The confusion is in the first paragraph. Based on your statement, PPSP WG works on standard protocols in P2P streaming systems. P2P streaming system has two components, peer and tracker. This will be very clear. The participation entities listed in the charter is related to the applicability of P2P streaming system, not P2P streaming system itself. Whether P2P streaming system provider wants to deploy the system on which device is provider business decision. Provider may or may not work out with their users on content sharing. Thus, end-user device may or may not be a peer in the system. This is not relevant to P2P streaming system architecture and protocols itself. Suggest revising the first paragraph as The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for the communications among P2P system components, peers or peer trackers via both fixed and mobile Internet. Consider adding third paragraph to highlight the applicability. Best Regards, Lucy _____ From: Ning Zong [mailto:zongning@huawei.com] Sent: Friday, September 11, 2009 9:25 AM To: Ping Pan Cc: Yong Lucy; 'Schmidt, Christian 1. (NSN - DE; ext zhangyunfei; ppsp@ietf.org Subject: Re: Re: Re: Re: [ppsp] ppsp charter discussion Hi, Ping, Thank you for suggestions. I agree that narrow down our work is very important and will make our work more clear. I think the scope of PPSP is based on the components of P2P streaming systems. We have narrowed the scope down to PPSP tracker and peer protocols, as pointed in charter. But my point is that as standard tools (note that we are not building a streaming system), PPSP tracker and peer protocols can be applied to either network devices such as cache and CDN, or end users. Regarding why the end users need to implement PPSP protocol, I think you are right that current subscribers of main P2P streaming vendors (e.g. PPlive) would not do that. But from other ISP's perspective, it maybe beneficial to run standard protocols. For instance, in China Mobile's document, it is discussed that open protocol would have benefits esp. for mobile terminals, etc. Of course, we need more ISPs and streaming vendors to contribute to our work here. Anyway, whether the PPSP protocol applies to end users or not depend on who would use PPSP protocol. In WG level, we are just developing open protocols/tools which are missing parts towards open P2P streaming system. Another words, we can (and actually have) narrow down our scope in protocol level. But shall we need to narrow down our work regarding who will use our protocol? Maybe no. 2 cents. BR, Ning Zong _____ Ning, Thanks for the clarification. Here is my main concern: currently, PPSP is positioned as yet another streaming protocol to the end users. IMHO, the end users can care less where the traffic are streaming from so long it's convenient, safe and have reasonable QoE. Do we need another streaming protocol to do this? One may argue the advantages in P2P. But, to many, PPSP is actually endorsing the following: * I need to install a special software from the ASP's, which may use my local CPU and storage for P2P operation, and do some other things that I don't know about. * The software enables me to watch some movies from the peers, who may be chased by the lawyers from some media companies. * On top of that, the service networks, especially, those who have to pay for the expensive backhaul links, may be sick of the traffic volume, and may install DPI boxes at every possible intersection to drop my video stream traffic (here goes my QoE). In short, I don't think it's wise to address all of the above in one WG, one architecture or one protocol. Rather, it would be nice to focus on what P2P streaming is good at, use it to solve a couple of real problems, and move on to the next. We must not ignore the advancement of the following in P2P streaming: * Cost efficiency: I saw a presentation from last IETF's P2PRG (from Rich Woundy?), where it takes a $3,000 PC to support 5,000 concurrent streams. That's cheap! * Simplicity: it never occurred to me that why we must have storage servers, called CDN, sitting all over the place, while some simple caching would be sufficient. In PPlive's Sigcomm paper, it mentioned of using 8/12G of Flash only, and no harddrive. (This may help answering some copyright concerns). * Portability: people may argue uplink vs. inter-domain locality. But all service providers need to do is inserting a few P2P edge caching boxes in the network. If more locality is needed, add another one. Chunk discovery and tracker manager are perfect for this. This is the line of reasoning I had: why not narrow the scope of PPSP, and solve the caching problem first? Once again, I don't think PPSP needs to deal with end users for now. In fact, by forcing an open standard, you are taking away the leverage from the existing P2P media companies, including PPlive and PPstream (as mentioned in another draft of yours :-)). Nobody wins! 0.5 cents, - Ping 2009/9/10 Ning Zong Hi, Ping, End users will run PPSP. As addressed in charter, PPSP protocols could run on multiple entities such as end users, caches, CDN nodes, etc. Here we talk about the standard protocols running on end users. What do you mean by non-technical issues? If you mean security, privacy and copyrights issues, I think not only PPSP, but some other BoF/WGs have same issues. You are perfectly right, they will be not in the working scope (but need some considerations during the WG work). BR, Ning Zong _____ Ning, We are in agreement here. So, you have listed three objectives for PPSP: 1. Standard interface to CDN/Cache 2. Enable media providers to stream content through standard interfaces 3. Help the service providers to manage their network/links better. So, curious, does it require the end users to run PPSP as well? The problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems to assume that is the case. (If I am not mistaken, all the "proprietary protocols" listed in Section 3.1 are client P2P applications). If yes, you have a wide scope of non-technical issues to deal with. If no, then you need to make it clear in the documents. Thanks for clarification. Ping 2009/9/10 Ning Zong Hi, Ping, Thank you for your comments, please see in-line. _____ Ning, I'd think that it is very important to emphasis the target users of the work, which has been quoted as "intelligent endpoints, caches, content distribution network nodes, and/or other edge devices." [Ning Zong] This is a good suggestion. If possible, I would hope that further specification, clarification and constraints to be added in one of the documents. The reasoning is that, if the work is to enable further proliferation of P2P clients within the networks, then the WG needs to address issues including security, privacy and copyrights extensively. This may be above and beyond technology, and is probably outside the scope of PPSP. On the other hand, if the work is to enable more efficient streaming content distribtution within a controlled environment by leveraging mechanisms such as tracker management and chuck discovery, then the work is well understood, and can be clearly defined, specified and experimented in the near future. [Ning Zong] If I understand your question correctly, this is related to the incentives of PPSP work. The clarification of incentives are further provided in problem statement. IMO, the second point in your comments is closer to current intention of PPSP. To be brief, the intention include (maybe not limited to): 1) enable more efficient streaming to integrate 3rd party devices, e.g. cache/CDN nodes; 2) enable streaming vendors to accomplish content distribution via some standard API, thus reduce the time-to-market and maybe cost, we hope; 3) enable ISPs to construct standard streaming platform to run content provisioning services. 2 cents, - Ping 2009/9/10 Ning Zong Hi, Lucy The participating entities in the first paragraph include both peers and trackers in P2P streaming systems. In second paragraph, we discuss the roles of trackers - assuming that people know the basic meaning of peers. Formal definitions of PPSP peers and PPSP trackers are defined in Problem Statement Draft. BR, Ning Zong _____ Hi YunFei and Christian, One clarification: "participating entities" listed in the text are the peer in P2P streaming systems, is that right? Thus, "PPSP" trackers are another participator in the systems. Suggest stating that clearly in the first paragraph. Cheers, Lucy _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, Christian 1. (NSN - DE/Munich) Sent: Thursday, September 10, 2009 3:03 AM To: ext zhangyunfei; ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion Hi Yunfei, after reading your charter proposal, a text proposal and 2 questions for clarifications. Best Regards Christian Schmidt Proposed new text for more transparency in main description: Old text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. New text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for P2P streaming systems in both fixed and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, and/or other edge devices. For a specific channel or streaming file, a PPSP tracker maintains lists of particiating PPSP peers. The PPSP tracker answers queries from PPSP peers for candidate PPSP peers. PPSP peers provide their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". Architectural survey 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. It is good to have a description of the current P2P streaming architecture. What is missing is the relation to the PPSP work. Will it contain a proposal for the PPSP architecture? Usage document 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. This sounds more like a "interop document". Was this the intention? _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei Sent: Thursday, September 10, 2009 8:24 AM To: ppsp@ietf.org Subject: [ppsp] ppsp charter discussion Dear all, The following is the modified version of PPSP charter(An early version was published in the IETF PPSP wiki page).Please review it and any comments and suggestions are highly appreciated. BR Yunfei -------------------------------------------------------- Description of PPSP Working Group: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. This WG's primary tasks are to produce: 1. A "problem statement" document describing the problems, incentives, and scope of developing the PPSP protocols, as well as common terminologies and concepts. 2. A "requirements" document listing the requirements on the designed PPSP protocols (e.g., general functionality and performance requirements of PPSP protocols or basic types of information that PPSP protocols should communicate to facilitate P2P streaming). 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. 4. A proposed standard defining the PPSP peer protocol. This protocol will define how PPSP peers advertise chunk availability. The protocol will also define the requests and responses of chunks among PPSP peers. 5. A proposed standard defining the PPSP tracker protocol. This protocol will define how PPSP peers inform and request information from PPSP trackers and how PPSP trackers reply to the requests. 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. 7. Optionally a "mobile usage document" (PPSP mobile BCP document) to evaluate PPSP with and without Mobile IP support when there are a lot of mobile peers in the system. The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups. The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy issues that PPSP should address. The following topics are excluded from this WG's scope: 1. Transport mechanisms for data transmission among PPSP peers, e.g. using TCP or UDP, unicast or multicast, etc. 2. Network coding mechanisms in P2P streaming. Network coding may be used in P2P streaming, but its support is beyond the scope of current charter. 3. Play-out mechanisms including streaming control (e.g., pause, fast-forward, and rewind). 4. Algorithms that may be different in different deployments (e.g., chunk selection, local storage strategies). 5. Research type questions related to P2P streaming. This WG will instead forward such questions to the IRTF P2PRG or other RG as appropriate. Examples include cache management. Goals and Milestones: Apr 2010 Working Group Last Call for problem statement Jun 2010 Submit problem statement to IESG as Informational document Aug 2010 Working Group Last Call for architecture survey Aug 2010 Working Group Last Call for requirements Oct 2010 Submit architecture survey to IESG as Informational document Oct 2010 Submit requirements to IESG as Informational document Apr 2011 Working Group Last Call for PPSP peer protocol Apr 2011 Working Group Last Call for PPSP tracker protocol Aug 2011 Submit PPSP peer protocol to IESG as Proposed Standard Aug 2011 Submit PPSP tracker protocol to IESG as Proposed Standard Nov 2011 Working Group Last Call of usage document Nov 2011 Working Group Last Call of mobility BCP document Jan 2012 Submit usage document to IESG as Informational document Jan 2012 Submit mobility BCP document to IESG as Informational document Apr 2012 Dissolve or re-charter _____ zhangyunfei 2009-09-10 _____ _______________________________________________ ppsp mailing list ppsp@ietf.org https://www.ietf.org/mailman/listinfo/ppsp _____ _____ _____ --Boundary_(ID_yF8g8ZKYJRngw21Jwd3n1w) Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7BIT

Hi Ning,

 

I agree your statement here. But I think the charter description is not as clear as your statement here. The confusion is in the first paragraph. Based on your statement, PPSP WG works on standard protocols in P2P streaming systems. P2P streaming system has two components, peer and tracker. This will be very clear.

 

The participation entities listed in the charter is related to the applicability of P2P streaming system, not P2P streaming system itself. Whether P2P streaming system provider wants to deploy the system on which device is provider business decision. Provider may or may not work out with their users on content sharing. Thus, end-user device may or may not be a peer in the system. This is not relevant to P2P streaming system architecture and protocols itself.

 

Suggest revising the first paragraph as

The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for the communications among P2P system components, peers or peer trackers via both fixed and mobile Internet.

Consider adding third paragraph to highlight the applicability.

Best Regards,

Lucy

 

 

 

 

From: Ning Zong [mailto:zongning@huawei.com]
Sent: Friday, September 11, 2009 9:25 AM
To: Ping Pan
Cc: Yong Lucy; 'Schmidt, Christian 1. (NSN - DE; ext zhangyunfei; ppsp@ietf.org
Subject: Re: Re: Re: Re: [ppsp] ppsp charter discussion

 

Hi, Ping,

 

Thank you for suggestions. I agree that narrow down our work is very important and will make our work more clear.

I think the scope of PPSP is based on the components of P2P streaming systems. We have narrowed the scope down to PPSP tracker and peer protocols, as pointed in charter.

But my point is that as standard tools (note that we are not building a streaming system), PPSP tracker and peer protocols can be applied to either network devices such as cache and CDN, or end users.

Regarding why the end users need to implement PPSP protocol, I think you are right that current subscribers of main P2P streaming vendors (e.g. PPlive) would not do that. But from other ISP's perspective, it maybe beneficial to run standard protocols. For instance, in China Mobile's document, it is discussed that open protocol would have benefits esp. for mobile terminals, etc. Of course, we need more ISPs and streaming vendors to contribute to our work here.

Anyway, whether the PPSP protocol applies to end users or not depend on who would use PPSP protocol. In WG level, we are just developing open protocols/tools which are missing parts towards open P2P streaming system. Another words, we can (and actually have) narrow down our scope in protocol level. But shall we need to narrow down our work regarding who will use our protocol? Maybe no.

2 cents.

 

BR,

Ning Zong 

 

Ning,

 

Thanks for the clarification.

 

Here is my main concern: currently, PPSP is positioned as yet another streaming protocol to the end users.

 

IMHO, the end users can care less where the traffic are streaming from so long it's convenient, safe and have reasonable QoE. Do we need another streaming protocol to do this?

 

One may argue the advantages in P2P. But, to many, PPSP is actually endorsing the following:

  • I need to install a special software from the ASP's, which may use my local CPU and storage for P2P operation, and do some other things that I don't know about.
  • The software enables me to watch some movies from the peers, who may be chased by the lawyers from some media companies. 
  • On top of that, the service networks, especially, those who have to pay for the expensive backhaul links, may be sick of the traffic volume, and may install DPI boxes at every possible intersection to drop my video stream traffic (here goes my QoE).

In short, I don't think it's wise to address all of the above in one WG, one architecture or one protocol. Rather, it would be nice to focus on what P2P streaming is good at, use it to solve a couple of real problems, and move on to the next.

 

We must not ignore the advancement of the following in P2P streaming:

  • Cost efficiency: I saw a presentation from last IETF's P2PRG (from Rich Woundy?), where it takes a $3,000 PC to support 5,000 concurrent streams. That's cheap!
  • Simplicity: it never occurred to me that why we must have storage servers, called CDN, sitting all over the place, while some simple caching would be sufficient. In PPlive's Sigcomm paper, it mentioned of using 8/12G of Flash only, and no harddrive. (This may help answering some copyright concerns).
  • Portability: people may argue uplink vs. inter-domain locality. But all service providers need to do is inserting a few P2P edge caching boxes in the network. If more locality is needed, add another one. Chunk discovery and tracker manager are perfect for this.

This is the line of reasoning I had: why not narrow the scope of PPSP, and solve the caching problem first?

 

Once again, I don't think PPSP needs to deal with end users for now. In fact, by forcing an open standard, you are taking away the leverage from the existing P2P media companies, including PPlive and PPstream (as mentioned in another draft of yours :-)). Nobody wins!

 

0.5 cents,

 

- Ping

 

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

 

End users will run PPSP. As addressed in charter, PPSP protocols could run on multiple entities such as end users, caches, CDN nodes, etc.

Here we talk about the standard protocols running on end users. What do you mean by non-technical issues? If you mean security, privacy and copyrights issues, I think not only PPSP, but some other BoF/WGs have same issues. You are perfectly right, they will be not in the working scope (but need some considerations during the WG work).

 

BR,

Ning Zong 

 

Ning,

 

We are in agreement here. So, you have listed three objectives for PPSP:

 

1. Standard interface to CDN/Cache

2. Enable media providers to stream content through standard interfaces

3. Help the service providers to manage their network/links better.

 

So, curious, does it require the end users to run PPSP as well? The problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems to assume that is the case. (If I am not mistaken, all the "proprietary protocols" listed in Section 3.1 are client P2P applications). If yes, you have a wide scope of non-technical issues to deal with. If no, then you need to make it clear in the documents.

 

Thanks for clarification.

 

Ping

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

 

Thank you for your comments, please see in-line.

 

Ning,

 

I'd think that it is very important to emphasis the target users of the work, which has been quoted as "intelligent endpoints, caches, content distribution network nodes, and/or other edge devices."

 

[Ning Zong] This is a good suggestion.

 

If possible, I would hope that further specification, clarification and constraints to be added in one of the documents.

 

The reasoning is that, if the work is to enable further proliferation of P2P clients within the networks, then the WG needs to address issues including security, privacy and copyrights extensively. This may be above and beyond technology, and is probably outside the scope of PPSP.

 

On the other hand, if the work is to enable more efficient streaming content distribtution within a controlled environment by leveraging mechanisms such as tracker management and chuck discovery, then the work is well understood, and can be clearly defined, specified and experimented in the near future.

 

[Ning Zong] If I understand your question correctly, this is related to the incentives of PPSP work. The clarification of incentives are further provided in problem statement. IMO, the second point in your comments is closer to current intention of PPSP. To be brief, the intention include (maybe not limited to): 1) enable more efficient streaming to integrate 3rd party devices, e.g. cache/CDN nodes; 2) enable streaming vendors to accomplish content distribution via some standard API, thus reduce the time-to-market and maybe cost, we hope; 3) enable ISPs to construct standard streaming platform to run content provisioning services.

 

2 cents,

 

- Ping

 

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Lucy

 

The participating entities in the first paragraph include both peers and trackers in P2P streaming systems. In second paragraph, we discuss the roles of trackers - assuming that people know the basic meaning of peers.

Formal definitions of PPSP peers and PPSP trackers are defined in Problem Statement Draft.

 

BR,

Ning Zong

 

Hi YunFei and Christian,

 

One clarification: “participating entities” listed in the text are the peer in P2P streaming systems, is that right? Thus, “PPSP” trackers are another participator in the systems.  Suggest stating that clearly in the first paragraph.

 

Cheers,

Lucy

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, Christian 1. (NSN - DE/Munich)
Sent: Thursday, September 10, 2009 3:03 AM
To: ext zhangyunfei; ppsp@ietf.org
Subject: Re: [ppsp] ppsp charter discussion

 

Hi Yunfei,

after reading your charter proposal, a text proposal and 2 questions for clarifications.

 

Best Regards

Christian Schmidt

 

 

 

Proposed new text for more transparency in main description:

Old text:

The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet.


PPSP protocols include the PPSP tracker protocol – a signaling protocol between “PPSP trackers” and “PPSP peers”, and the PPSP peer protocol – a signaling protocol among “PPSP peers”. A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data.

 

New text:

The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for P2P streaming systems in both fixed and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, and/or other edge devices.

 

For a specific channel or streaming file, a PPSP tracker maintains lists of particiating PPSP peers. The PPSP tracker answers queries from PPSP peers for candidate PPSP peers. PPSP peers provide their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP protocols include the PPSP tracker protocol – a signaling protocol between “PPSP trackers” and “PPSP peers”, and the PPSP peer protocol – a signaling protocol among “PPSP peers”.

 

Architectural survey

3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice.

It is good to have a description of the current P2P streaming architecture. What is missing is the relation to the PPSP work. Will it contain a proposal for the PPSP architecture?

 

Usage document

6. A “usage document” explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems.

This sounds more like a "interop document". Was this the intention?

 

 

 

 

 

 

 

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei
Sent: Thursday, September 10, 2009 8:24 AM
To: ppsp@ietf.org
Subject: [ppsp] ppsp charter discussion

 


Dear all,

   The following is the modified version of PPSP charter(An early version was published in the IETF PPSP wiki page).Please review it and any comments and suggestions are highly appreciated.

 

           BR

            Yunfei

--------------------------------------------------------

Description of PPSP Working Group:

The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet.


PPSP protocols include the PPSP tracker protocol – a signaling protocol between “PPSP trackers” and “PPSP peers”, and the PPSP peer protocol – a signaling protocol among “PPSP peers”. A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data.

 

This WG's primary tasks are to produce:
1. A “problem statement” document describing the problems, incentives, and scope of developing the PPSP protocols, as well as common terminologies and concepts.

 

2. A “requirements” document listing the requirements on the designed PPSP protocols (e.g., general functionality and performance requirements of PPSP protocols or basic types of information that PPSP protocols should communicate to facilitate P2P streaming).


3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice.


4. A proposed standard defining the PPSP peer protocol. This protocol will define how PPSP peers advertise chunk availability. The protocol will also define the requests and responses of chunks among PPSP peers.

 

5. A proposed standard defining the PPSP tracker protocol. This protocol will define how PPSP peers inform and request information from PPSP trackers and how PPSP trackers reply to the requests.

 

6. A “usage document” explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems.

 

7. Optionally a ”mobile usage document” (PPSP mobile BCP document) to evaluate PPSP with and without Mobile IP support when there are a lot of mobile peers in the system.


The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups.


The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy issues that PPSP should address.

 

The following topics are excluded from this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. using TCP or UDP, unicast or multicast, etc.


2. Network coding mechanisms in P2P streaming. Network coding may be used in P2P streaming, but its support is beyond the scope of current charter.

 

3. Play-out mechanisms including streaming control (e.g., pause, fast-forward, and rewind).

 

4. Algorithms that may be different in different deployments (e.g., chunk selection, local storage strategies).

 

5. Research type questions related to P2P streaming. This WG will instead forward such questions to the IRTF P2PRG or other RG as appropriate. Examples include cache management.

Goals and Milestones:

Apr 2010

Working Group Last Call for problem statement

Jun 2010

Submit problem statement to IESG as Informational document

Aug 2010

Working Group Last Call for architecture survey

Aug 2010

Working Group Last Call for requirements

Oct

2010

Submit architecture survey to IESG as Informational document

Oct 2010

Submit requirements to IESG as Informational document

Apr 2011

Working Group Last Call for PPSP peer protocol

Apr

2011

Working Group Last Call for PPSP tracker protocol

Aug 2011

Submit PPSP peer protocol to IESG as Proposed Standard

Aug 2011

Submit PPSP tracker protocol to IESG as Proposed Standard

Nov 2011

Working Group Last Call of usage document

Nov 2011

Working Group Last Call of mobility BCP document

Jan 2012

Submit usage document to IESG as Informational document

Jan 2012

Submit mobility BCP document to IESG as Informational document

Apr 2012

Dissolve or re-charter

 

 

zhangyunfei

2009-09-10


_______________________________________________
ppsp mailing list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp

 

 

 

--Boundary_(ID_yF8g8ZKYJRngw21Jwd3n1w)-- From guyingjie@huawei.com Sun Sep 13 22:31:29 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id E5E923A6812 for ; Sun, 13 Sep 2009 22:31:29 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.048 X-Spam-Level: X-Spam-Status: No, score=-1.048 tagged_above=-999 required=5 tests=[AWL=1.550, BAYES_00=-2.599, HTML_MESSAGE=0.001] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lfxDA4n0k43I for ; Sun, 13 Sep 2009 22:31:28 -0700 (PDT) Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [119.145.14.64]) by core3.amsl.com (Postfix) with ESMTP id 590B33A6806 for ; Sun, 13 Sep 2009 22:31:28 -0700 (PDT) Received: from huawei.com (szxga01-in [172.24.2.3]) by szxga01-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPY005DQ4PM49@szxga01-in.huawei.com> for ppsp@ietf.org; Mon, 14 Sep 2009 13:32:10 +0800 (CST) Received: from huawei.com ([172.24.1.24]) by szxga01-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPY00LI14PM6D@szxga01-in.huawei.com> for ppsp@ietf.org; Mon, 14 Sep 2009 13:32:10 +0800 (CST) Received: from g00107907 ([10.164.12.64]) by szxml04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPY0064G4PJ13@szxml04-in.huawei.com> for ppsp@ietf.org; Mon, 14 Sep 2009 13:32:10 +0800 (CST) Date: Mon, 14 Sep 2009 13:32:06 +0800 From: "Y.J. Gu" In-reply-to: <0KPT001DG9D8NB@szxml01-in.huawei.com> To: 'Ning Zong' Message-id: <002f01ca34fc$b462b090$400ca40a@china.huawei.com> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Mailer: Microsoft Office Outlook 11 Content-type: multipart/alternative; boundary="Boundary_(ID_wJuTPa0gedGwmPthZcfe+A)" Thread-index: Acoy66uHNX7lyjnSStSWg/0asaFKagCAhPYg Cc: ppsp@ietf.org Subject: [ppsp] Comments on draft-zong-ppsp-chunk-discovery-00 X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Sep 2009 05:31:30 -0000 This is a multi-part message in MIME format. --Boundary_(ID_wJuTPa0gedGwmPthZcfe+A) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Hi Ning, I'm sorry I missed the discussion of this draft, I've just read it. I'm not very clear about the following terms. Video ID: is it a descriptive strings of the video name, or a numerable label represents the name, or a hash of "name and related information". Chunk ID: are the chunk ids, for a particular movie, sequent series start from, e.g., 1? Or they are discontinuous numbers that show the offset from the start of chunk to the start of the movie? Meanwhile, I have some comments on the text. First, how about defining two separate data structures for PeerRegistrationData and PeerStorageData. PeerRegistrationData should be much simple, which only contains the node id of the registration peer and the chunks it has. It's only used when a peer want to send chunk registration infor. struct { Destination destination_id; uint16 chunk_id_list_length; ChunkID chunk_id_list[chunk_id_list_length]; } PeerRegistrationData; PeerStorageData is used when a storage peer combine and store the chunk registration information, as well as when a peer fetch the indication of where to download the chunk. It also can be used when a storage peer, who is going to drop, transfer the registration information stored on it to a successor storage peer. typedef opaque ChunkID[2]; struct { Destination destination_id; uint16 chunk_id_list_length; ChunkID chunk_id_list[chunk_id_list_length]; } DestChunkData struct { uint16 destination_id_list_length; DestChunkData destination_chunk_list[destination_id_list_length]; } PeerStorageData; Second, you suggest that a peer can tell the storage peer what other chunks it has within one registration message. For example, Peer A: Movie A:Chunk 1 -> 1234, {1, [ {1234, 2, [Chunk 1, Chunk 2]} ] } Movie A:Chunk 2 -> 1234, {1, [ {1234, 2, [Chunk 1, Chunk 2]} ] } It's a good way to accelerate the process of chunk discovery. However, if registration peer is designed to carry these additional infor in every registration message it sends, there might be a cumulated increase in the chunk list, and extremely waste. It's meaningful when peer A do its first registration on a particular storage peer, it can register all the chunks it has by one message. Last, in section 6, you suggest that peer reports to tracker coarse information (i.e. Video-ID). I think it's useful for Live streaming, where peers watching the same chunk. However, for VoD, peers choose such different chunks that a coarse infor may not help tracker to decide which peers might have the chunks and should be replied to the request peer. my two cents. Regards Yingjie Gu --Boundary_(ID_wJuTPa0gedGwmPthZcfe+A) Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7BIT
Hi Ning,
I'm sorry I missed the discussion of this draft, I've just read it.
I'm not very clear about the following terms.
Video ID: is it a descriptive strings of the video name, or a numerable label represents the name, or a hash of "name and related information".
Chunk ID: are the chunk ids, for a particular movie, sequent series start from, e.g., 1? Or they are discontinuous numbers that show the offset from the start of chunk to the start of the movie?
 
Meanwhile, I have some comments on the text.
First,  how about defining two separate data structures for PeerRegistrationData and PeerStorageData.
PeerRegistrationData should be much simple, which only contains the node id of the registration peer and the chunks it has. It's only used when a peer want to send chunk registration infor.
struct {
  Destination    destination_id;
  uint16         chunk_id_list_length;
  ChunkID        chunk_id_list[chunk_id_list_length];
  } PeerRegistrationData;
 
PeerStorageData is used when a storage peer combine and store the chunk registration information, as well as when a peer fetch the indication of where to download the chunk. It also can be used when a storage peer, who is going to drop, transfer the registration information stored on it to a successor storage peer.
    typedef opaque       ChunkID[2];
 
    struct {
      Destination    destination_id;
      uint16         chunk_id_list_length;
      ChunkID        chunk_id_list[chunk_id_list_length];
    } DestChunkData
 
    struct {
      uint16         destination_id_list_length;
      DestChunkData  destination_chunk_list[destination_id_list_length];
    } PeerStorageData;
 
Second,  you suggest that a peer can tell the storage peer what other chunks it has within one registration message. For example, Peer A:
 
      Movie A:Chunk 1 -> 1234, {1, [ {1234, 2, [Chunk 1, Chunk 2]} ] }  
      Movie A:Chunk 2 -> 1234, {1, [ {1234, 2, [Chunk 1, Chunk 2]} ] }
It's a good way to accelerate the process of chunk discovery. However, if registration peer is designed to carry these additional infor in every registration message it sends, there might be a cumulated increase in the chunk list, and extremely waste. It's meaningful when peer A do its first registration on a particular storage peer, it can register all the chunks it has by one message. 
 
Last, in section 6, you suggest that peer reports to tracker coarse information (i.e.
      Video-ID). I think it's useful for Live streaming, where peers watching the same chunk. However, for VoD, peers choose such different chunks that a coarse infor may not help tracker to decide which peers might have the chunks and should be replied to the request peer.
 
 my two cents.
 

Regards

Yingjie Gu

--Boundary_(ID_wJuTPa0gedGwmPthZcfe+A)-- From abcdmatao@gmail.com Sun Sep 13 23:55:19 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 0C97628C0F5 for ; Sun, 13 Sep 2009 23:55:19 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.415 X-Spam-Level: X-Spam-Status: No, score=-1.415 tagged_above=-999 required=5 tests=[AWL=1.183, BAYES_00=-2.599, HTML_MESSAGE=0.001] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id eYXRffiC-7Dj for ; Sun, 13 Sep 2009 23:55:18 -0700 (PDT) Received: from mail-yw0-f195.google.com (mail-yw0-f195.google.com [209.85.211.195]) by core3.amsl.com (Postfix) with ESMTP id E3A2E3A67DF for ; Sun, 13 Sep 2009 23:55:17 -0700 (PDT) Received: by ywh33 with SMTP id 33so3876111ywh.18 for ; Sun, 13 Sep 2009 23:55:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:cc:content-type; bh=d5yKbOtwqZttKy0HB+cBfl1ifQBj//UjCNeGyGbW7/M=; b=JX1/fiSzPV63GHNbrJ1SI3lNRst5p0ZSleq/DjqOVKJA+NzoC0W2cXd75El27gSe6F YXPF7xdDrPO+5MkYXsLUSKkb/iAzuMEKTh2YJDXyYoF6EVrG0g7i6R0Ep05l+xpA1Bbq xRoEXGTLcugJMqUNc/y9tKfZWFiRiXy/V8sRs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:cc:content-type; b=l/ju7nahkzRBfR7m/nJYnk1dtGhJluCauPgGfdP/5fFYS5JsPAfjvpPjQm2UuK3NjJ Ylh5w8v+zkhPyjXxFzWt6Ca/via1x6cAY+pOXTPF1asdpNZqYmq4hZi5PdfvVsQR3cjg BG/Of8KyhL8GloXJP85KbxD8bHyF4oSoKLVXA= MIME-Version: 1.0 Received: by 10.151.4.5 with SMTP id g5mr9457495ybi.159.1252911358223; Sun, 13 Sep 2009 23:55:58 -0700 (PDT) Date: Mon, 14 Sep 2009 14:55:58 +0800 Message-ID: <99978d7d0909132355i7a0e3110n28ee47173bd596cb@mail.gmail.com> From: Tao Ma To: lucyyong@huawei.com, ppsp@ietf.org Content-Type: multipart/alternative; boundary=000e0cd29a207127e9047384281b Cc: zhangch@bupt.edu.cn Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Sep 2009 06:55:19 -0000 --000e0cd29a207127e9047384281b Content-Type: text/plain; charset=ISO-8859-1 Hi, I think your revised texts are a little ambiguous. To my understanding, P2P streaming system has some entities, and these entities are classified into peers and trackers considering their roles. Peer and tracker is two abstract concepts widely used in P2P systems. If the first graph only mentions peer or tracker, it is not clear what the PPSP stands for. The old texts enumerate some entities(caches, CDN nodes) , which externalize the P2P streaming system. I think the specific description is necessary. 0.1 cent Regards Tao Ma Beijing University of Posts and Telecommunications, Mobile life and new media lab >Hi Ning, >I agree your statement here. But I think the charter description is not as clear as your statement here. The confusion is in the first >paragraph. Based on your statement, PPSP WG works on standard protocols in P2P streaming systems. P2P streaming system >has two components, peer and tracker. This will be very clear. >The participation entities listed in the charter is related to the applicability of P2P streaming system, not P2P streaming system >itself. Whether P2P streaming system provider wants to deploy the system on which device is provider business decision. >Provider may or may not work out with their users on content sharing. Thus, end-user device may or may not be a peer in the >system. This is not relevant to P2P streaming system architecture and protocols itself. >Suggest revising the first paragraph as >The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >chartered to develop standard signaling protocols (called PPSP protocols) >for the communications among P2P system components, peers or peer trackers >via both fixed and mobile Internet. >Consider adding third paragraph to highlight the applicability. >Best Regards, >Lucy --000e0cd29a207127e9047384281b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi,
=A0=A0 I think your revised texts are a little ambiguous.=A0 To my u= nderstanding, P2P streaming system has some entities, and these entities ar= e classified into peers and trackers considering their roles. Peer and trac= ker is two abstract concepts widely used in P2P systems. If the first graph= only mentions peer or tracker, it is not clear what the PPSP stands for.= =A0 The old texts enumerate some entities(caches, CDN nodes) , which extern= alize the P2P streaming system. I think the specific description is necessa= ry.
0.1 cent=A0=A0=A0
Regards
Tao Ma
Beijing University of Posts and Telecommunications, Mobile life and new media lab=



>Hi Ning,

=A0

>I agree yo= ur statement here. But I think the charter description is not as clear as your statement here. The confusion i= s in the first >paragraph. Based on your statement, PPSP WG works on standard protocols in P2P streaming systems. P2P streaming system >has two components, peer and tracker. This will be very clear.

=A0

>The participation entities listed in the charter is related to the applicability of P2P streaming system, not P2P streaming system >itself. Whether P2P strea= ming system provider wants to deploy the system on which device is provider business decision. >Provider may or may not work out with their users on content sharing. Thus, end-user device may or = may not be a peer in the &g= t;system. This is not = relevant to P2P streaming system architecture and protocols itself.

=A0

>Suggest revising the first paragr= aph as

>The Peer-to-Peer (P2P) Stre= aming Protocol working group (PPSP WG) is >chartered to develop standard signaling protocols (called PPSP protocols) <= span style=3D"font-size: 12pt; font-family: "Courier New"; color:= black;">for the communications among P2P system components, peers or peer trackers <= span style=3D"font-size: 12pt; font-family: "Courier New"; color:= black;">via both fixed and mobile Internet.

>Consider adding third parag= raph to highlight the applicability.

>Best Regards,

>Lucy
--000e0cd29a207127e9047384281b-- From lucyyong@huawei.com Mon Sep 14 10:01:29 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 3407D28C1B6 for ; Mon, 14 Sep 2009 10:01:29 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.182 X-Spam-Level: X-Spam-Status: No, score=-2.182 tagged_above=-999 required=5 tests=[AWL=0.416, BAYES_00=-2.599, HTML_MESSAGE=0.001] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ac1aQPBRX0xg for ; Mon, 14 Sep 2009 10:01:28 -0700 (PDT) Received: from usaga02-in.huawei.com (usaga02-in.huawei.com [206.16.17.70]) by core3.amsl.com (Postfix) with ESMTP id 1AF8C3A6A8C for ; Mon, 14 Sep 2009 10:01:28 -0700 (PDT) Received: from huawei.com (localhost [127.0.0.1]) by usaga02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KPZ0092D0NHHA@usaga02-in.huawei.com> for ppsp@ietf.org; Mon, 14 Sep 2009 10:02:05 -0700 (PDT) Received: from y736742 ([10.124.12.61]) by usaga02-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KPZ00B9Q0NE9S@usaga02-in.huawei.com> for ppsp@ietf.org; Mon, 14 Sep 2009 10:02:05 -0700 (PDT) Date: Mon, 14 Sep 2009 12:02:01 -0500 From: Yong Lucy In-reply-to: <99978d7d0909132355i7a0e3110n28ee47173bd596cb@mail.gmail.com> To: 'Tao Ma' , ppsp@ietf.org Message-id: <000f01ca355d$14350490$3d0c7c0a@china.huawei.com> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Mailer: Microsoft Office Outlook 11 Content-type: multipart/alternative; boundary="Boundary_(ID_MXF5I43ox+sfpYXUtSlEFA)" Thread-index: Aco1CG99PyLcU9n0RrSsYF2DMbukSwAUpWwg References: <99978d7d0909132355i7a0e3110n28ee47173bd596cb@mail.gmail.com> Cc: zhangch@bupt.edu.cn Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Sep 2009 17:01:29 -0000 This is a multi-part message in MIME format. --Boundary_(ID_MXF5I43ox+sfpYXUtSlEFA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Hi Tao, To my understanding, there are two components in P2P streaming steams. It is necessary to give a clear definition about peers and trackers. Peers are able to perform caching, streaming sharing, chunk sharing, etc. Thus, such system applies to caches, CDN nodes, and (maybe) end users, which drives the reason for PPSP work. Regards, Lucy _____ From: Tao Ma [mailto:abcdmatao@gmail.com] Sent: Monday, September 14, 2009 1:56 AM To: lucyyong@huawei.com; ppsp@ietf.org Cc: zhangch@bupt.edu.cn Subject: Re: [ppsp] ppsp charter discussion Hi, I think your revised texts are a little ambiguous. To my understanding, P2P streaming system has some entities, and these entities are classified into peers and trackers considering their roles. Peer and tracker is two abstract concepts widely used in P2P systems. If the first graph only mentions peer or tracker, it is not clear what the PPSP stands for. The old texts enumerate some entities(caches, CDN nodes) , which externalize the P2P streaming system. I think the specific description is necessary. 0.1 cent Regards Tao Ma Beijing University of Posts and Telecommunications, Mobile life and new media lab >Hi Ning, >I agree your statement here. But I think the charter description is not as clear as your statement here. The confusion is in the first >paragraph. Based on your statement, PPSP WG works on standard protocols in P2P streaming systems. P2P streaming system >has two components, peer and tracker. This will be very clear. >The participation entities listed in the charter is related to the applicability of P2P streaming system, not P2P streaming system >itself. Whether P2P streaming system provider wants to deploy the system on which device is provider business decision. >Provider may or may not work out with their users on content sharing. Thus, end-user device may or may not be a peer in the >system. This is not relevant to P2P streaming system architecture and protocols itself. >Suggest revising the first paragraph as >The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >chartered to develop standard signaling protocols (called PPSP protocols) >for the communications among P2P system components, peers or peer trackers >via both fixed and mobile Internet. >Consider adding third paragraph to highlight the applicability. >Best Regards, >Lucy --Boundary_(ID_MXF5I43ox+sfpYXUtSlEFA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7BIT

Hi Tao,

 

To my understanding, there are two components in P2P streaming steams. It is necessary to give a clear definition about peers and trackers. Peers are able to perform caching, streaming sharing, chunk sharing, etc. Thus, such system applies to caches, CDN nodes, and (maybe) end users, which drives the reason for PPSP work.

 

Regards,

Lucy

 

From: Tao Ma [mailto:abcdmatao@gmail.com]
Sent: Monday, September 14, 2009 1:56 AM
To: lucyyong@huawei.com; ppsp@ietf.org
Cc: zhangch@bupt.edu.cn
Subject: Re: [ppsp] ppsp charter discussion

 

Hi,
   I think your revised texts are a little ambiguous.  To my understanding, P2P streaming system has some entities, and these entities are classified into peers and trackers considering their roles. Peer and tracker is two abstract concepts widely used in P2P systems. If the first graph only mentions peer or tracker, it is not clear what the PPSP stands for.  The old texts enumerate some entities(caches, CDN nodes) , which externalize the P2P streaming system. I think the specific description is necessary.
0.1 cent   
Regards
Tao Ma
Beijing University of Posts and Telecommunications, Mobile life and new media lab

 

>Hi Ning,

 

>I agree your statement here. But I think the charter description is not as clear as your statement here. The confusion is in the first >paragraph. Based on your statement, PPSP WG works on standard protocols in P2P streaming systems. P2P streaming system >has two components, peer and tracker. This will be very clear.

 

>The participation entities listed in the charter is related to the applicability of P2P streaming system, not P2P streaming system >itself. Whether P2P streaming system provider wants to deploy the system on which device is provider business decision. >Provider may or may not work out with their users on content sharing. Thus, end-user device may or may not be a peer in the >system. This is not relevant to P2P streaming system architecture and protocols itself.

 

>Suggest revising the first paragraph as

>The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >chartered to develop standard signaling protocols (called PPSP protocols) >for the communications among P2P system components, peers or peer trackers >via both fixed and mobile Internet.

>Consider adding third paragraph to highlight the applicability.

>Best Regards,

>Lucy

--Boundary_(ID_MXF5I43ox+sfpYXUtSlEFA)-- From zongning@huawei.com Tue Sep 15 20:17:35 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 093C43A689C for ; Tue, 15 Sep 2009 20:17:35 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -96.217 X-Spam-Level: X-Spam-Status: No, score=-96.217 tagged_above=-999 required=5 tests=[AWL=1.863, BAYES_40=-0.185, FH_RELAY_NODNS=1.451, HELO_MISMATCH_COM=0.553, HTML_MESSAGE=0.001, RDNS_NONE=0.1, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id quieCchoRZNp for ; Tue, 15 Sep 2009 20:17:34 -0700 (PDT) Received: from szxga04-in.huawei.com (unknown [119.145.14.67]) by core3.amsl.com (Postfix) with ESMTP id 46D6D3A681C for ; Tue, 15 Sep 2009 20:17:33 -0700 (PDT) Received: from huawei.com (szxga04-in [172.24.2.12]) by szxga04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KQ10032WNU7VZ@szxga04-in.huawei.com> for ppsp@ietf.org; Wed, 16 Sep 2009 11:18:07 +0800 (CST) Received: from huawei.com ([172.24.1.33]) by szxga04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KQ1009JENU1B7@szxga04-in.huawei.com> for ppsp@ietf.org; Wed, 16 Sep 2009 11:18:02 +0800 (CST) Received: from z63316 ([10.164.12.81]) by szxml06-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KQ100CAXNU0CE@szxml06-in.huawei.com> for ppsp@ietf.org; Wed, 16 Sep 2009 11:18:01 +0800 (CST) Date: Wed, 16 Sep 2009 11:17:59 +0800 From: Ning Zong In-reply-to: <000f01ca355d$14350490$3d0c7c0a@china.huawei.com> To: 'Yong Lucy' , 'Tao Ma' , ppsp@ietf.org Message-id: <024801ca367c$4b12ac40$510ca40a@china.huawei.com> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Mailer: Microsoft Office Outlook 11 Content-type: multipart/alternative; boundary="Boundary_(ID_/KM3RMm0BHAFbIRcpH7J9A)" Thread-index: Aco1CG99PyLcU9n0RrSsYF2DMbukSwAUpWwgAEfGUbA= Cc: zhangch@bupt.edu.cn Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Sep 2009 03:17:35 -0000 This is a multi-part message in MIME format. --Boundary_(ID_/KM3RMm0BHAFbIRcpH7J9A) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Hi, Lucy and Tao, Thank you for your comments. In our charter, we only consider the interface between peer and tracker, as well as interface between peers. We need to narrow down our protocol scope. In this sense, the entities listed in our charter would be either peers or trackers, although some of them may have other roles in some individual implementations. BR, Ning Zong _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Yong Lucy Sent: Tuesday, September 15, 2009 1:02 AM To: 'Tao Ma'; ppsp@ietf.org Cc: zhangch@bupt.edu.cn Subject: Re: [ppsp] ppsp charter discussion Hi Tao, To my understanding, there are two components in P2P streaming steams. It is necessary to give a clear definition about peers and trackers. Peers are able to perform caching, streaming sharing, chunk sharing, etc. Thus, such system applies to caches, CDN nodes, and (maybe) end users, which drives the reason for PPSP work. Regards, Lucy _____ From: Tao Ma [mailto:abcdmatao@gmail.com] Sent: Monday, September 14, 2009 1:56 AM To: lucyyong@huawei.com; ppsp@ietf.org Cc: zhangch@bupt.edu.cn Subject: Re: [ppsp] ppsp charter discussion Hi, I think your revised texts are a little ambiguous. To my understanding, P2P streaming system has some entities, and these entities are classified into peers and trackers considering their roles. Peer and tracker is two abstract concepts widely used in P2P systems. If the first graph only mentions peer or tracker, it is not clear what the PPSP stands for. The old texts enumerate some entities(caches, CDN nodes) , which externalize the P2P streaming system. I think the specific description is necessary. 0.1 cent Regards Tao Ma Beijing University of Posts and Telecommunications, Mobile life and new media lab >Hi Ning, >I agree your statement here. But I think the charter description is not as clear as your statement here. The confusion is in the first >paragraph. Based on your statement, PPSP WG works on standard protocols in P2P streaming systems. P2P streaming system >has two components, peer and tracker. This will be very clear. >The participation entities listed in the charter is related to the applicability of P2P streaming system, not P2P streaming system >itself. Whether P2P streaming system provider wants to deploy the system on which device is provider business decision. >Provider may or may not work out with their users on content sharing. Thus, end-user device may or may not be a peer in the >system. This is not relevant to P2P streaming system architecture and protocols itself. >Suggest revising the first paragraph as >The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is >chartered to develop standard signaling protocols (called PPSP protocols) >for the communications among P2P system components, peers or peer trackers >via both fixed and mobile Internet. >Consider adding third paragraph to highlight the applicability. >Best Regards, >Lucy --Boundary_(ID_/KM3RMm0BHAFbIRcpH7J9A) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

Hi, Lucy and = Tao,

 <= /span>

Thank you for = your comments.

In our charter, = we only consider the interface between peer and tracker, as well as interface = between peers. We need to narrow down our = protocol scope.=

In this sense, = the entities listed in our charter would be either peers or trackers, = although some of them may have other roles in some individual = implementations.

 <= /span>

BR,

Ning = Zong

 <= /span>

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Yong Lucy
Sent: Tuesday, September = 15, 2009 1:02 AM
To: 'Tao Ma'; = ppsp@ietf.org
Cc: = zhangch@bupt.edu.cn
Subject: Re: [ppsp] ppsp = charter discussion

 

Hi = Tao,

 =

To my = understanding, there are two components in P2P streaming steams. It is necessary to = give a clear definition about peers and trackers. Peers are able to perform = caching, streaming sharing, chunk sharing, etc. Thus, such system applies to = caches, CDN nodes, and (maybe) end users, which drives the reason for PPSP = work.

 =

Regards,

Lucy

 =

From: Tao Ma [mailto:abcdmatao@gmail.com]
Sent: Monday, September = 14, 2009 1:56 AM
To: lucyyong@huawei.com; ppsp@ietf.org
Cc: = zhangch@bupt.edu.cn
Subject: Re: [ppsp] ppsp = charter discussion

 

Hi,
   I think your revised texts are a little ambiguous.  To = my understanding, P2P streaming system has some entities, and these = entities are classified into peers and trackers considering their roles. Peer and = tracker is two abstract concepts widely used in P2P systems. If the first graph = only mentions peer or tracker, it is not clear what the PPSP stands = for.  The old texts enumerate some entities(caches, CDN nodes) , which externalize = the P2P streaming system. I think the specific description is necessary.
0.1 cent   
Regards
Tao Ma
Beijing University of Posts and = Telecommunications, Mobile life and new media lab =

 

>Hi Ning,

 

>I agree your statement here. But I = think the charter description is not as clear as your statement here. The = confusion is in the first >paragraph. Based on your statement, PPSP WG works on = standard protocols in P2P streaming systems. P2P streaming system >has two components, peer and tracker. This will be very clear. =

 

>The participation entities listed in = the charter is related to the applicability of P2P streaming system, not P2P streaming system >itself. Whether P2P streaming system provider wants = to deploy the system on which device is provider business decision. = >Provider may or may not work out with their users on content sharing. Thus, = end-user device may or may not be a peer in the >system. This is not relevant = to P2P streaming system architecture and protocols itself.

 

>Suggest revising the first paragraph = as

>The Peer-to-Peer (P2P) Streaming Protocol working group = (PPSP WG) is >chartered to develop standard signaling protocols (called = PPSP protocols) >for the communications among P2P system components, peers = or peer trackers >via both fixed and mobile Internet.

>Consider adding third paragraph to highlight the = applicability.

>Best Regards,

>Lucy

--Boundary_(ID_/KM3RMm0BHAFbIRcpH7J9A)-- From ron.even.tlv@gmail.com Wed Sep 16 04:05:31 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 251213A68EB for ; Wed, 16 Sep 2009 04:05:31 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3Cz27h4cKvYy for ; Wed, 16 Sep 2009 04:05:28 -0700 (PDT) Received: from mail-bw0-f219.google.com (mail-bw0-f219.google.com [209.85.218.219]) by core3.amsl.com (Postfix) with ESMTP id 6DB233A69D4 for ; Wed, 16 Sep 2009 04:05:27 -0700 (PDT) Received: by bwz19 with SMTP id 19so3402738bwz.37 for ; Wed, 16 Sep 2009 04:06:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:cc:references :in-reply-to:subject:date:message-id:mime-version:content-type :x-mailer:thread-index:content-language; bh=ijGCbPjgYSmIHf7eGTc7hkkskef6ZHJ5D11pW8R+5i8=; b=q5NY7kR1jEy34o8YRJ04CiRT8xz+s73oifx6Qpktd2f90IRFAE7QmNgDxye4Q2eNfj gNoAjUfxV6lOQoAE2j96QXktBlx81soEDi1GeFrY8xIhlE1edSz+lUyAPnYz2QsguS9Y oe5iDunUnrUoM3Ku7q7MjPJPTH1sgDs56K9d8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:references:in-reply-to:subject:date:message-id :mime-version:content-type:x-mailer:thread-index:content-language; b=jpLk6fJAUBO8fMVuvvVwuM1XmB/bsI1dgV9rQNzHRpbJmhtyp7K5c2qOcsuv2cMXf+ WUTyjXSbjZLjUPCtKIH4ScZZzGGIs3vT62F5Z0YAzXOG2v5uSJlvGmCEIpN2K0rSRVzl Q2vhYEi228h2On1qPUdnnEUubR6dvbWPreR7c= Received: by 10.204.7.86 with SMTP id c22mr7202387bkc.113.1253099166802; Wed, 16 Sep 2009 04:06:06 -0700 (PDT) Received: from windows8d787f9 (bzq-79-183-9-115.red.bezeqint.net [79.183.9.115]) by mx.google.com with ESMTPS id 1sm12130523fks.35.2009.09.16.04.06.03 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 16 Sep 2009 04:06:05 -0700 (PDT) From: "Roni Even" To: "'Ping Pan'" , "'Ning Zong'" References: <0KPR00LQ0UX6ED@szxml01-in.huawei.com> <22d04a930909101455v3df5ec7dq3241e6aa5e373f9b@mail.gmail.com> <22d04a930909101525i69a3cd78gf028040e0e2c5b9a@mail.gmail.com> In-Reply-To: <22d04a930909101525i69a3cd78gf028040e0e2c5b9a@mail.gmail.com> Date: Wed, 16 Sep 2009 14:04:17 +0300 Message-ID: <4ab0c69d.01135e0a.6ede.7383@mx.google.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0057_01CA36D6.9572CB30" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcoyZcdI4gZ1W7eQTMOHNVr9I+kJpwEV0nWg Content-Language: en-us Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Sep 2009 11:05:31 -0000 This is a multi-part message in MIME format. ------=_NextPart_000_0057_01CA36D6.9572CB30 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Ping, Maybe you should look at the DECADE work = https://www.ietf.org/mailman/listinfo/decade=20 There was a BAR BOF in Stockholm discussing caching solutions for P2P = applications. The scope of PPSP is to address the protocol from peers to tracker and = between peers in order to get the relevant chunks.=20 =20 Roni Even =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = Ping Pan Sent: Friday, September 11, 2009 1:26 AM To: Ning Zong Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion =20 Rich, =20 Thanks for the correction.=20 Ping Pan (408) 655-6547 On Thu, Sep 10, 2009 at 2:55 PM, Ping Pan wrote: Ning, =20 Thanks for the clarification. =20 Here is my main concern: currently, PPSP is positioned as yet another = streaming protocol to the end users. =20 IMHO, the end users can care less where the traffic are streaming from = so long it's convenient, safe and have reasonable QoE. Do we need = another streaming protocol to do this? =20 One may argue the advantages in P2P. But, to many, PPSP is actually = endorsing the following: * I need to install a special software from the ASP's, which may use my = local CPU and storage for P2P operation, and do some other things that I = don't know about. * The software enables me to watch some movies from the peers, who may = be chased by the lawyers from some media companies.=20 * On top of that, the service networks, especially, those who have to = pay for the expensive backhaul links, may be sick of the traffic volume, = and may install DPI boxes at every possible intersection to drop my = video stream traffic (here goes my QoE). In short, I don't think it's wise to address all of the above in one WG, = one architecture or one protocol. Rather, it would be nice to focus on = what P2P streaming is good at, use it to solve a couple of real = problems, and move on to the next. =20 We must not ignore the advancement of the following in P2P streaming: * Cost efficiency: I saw a presentation from last IETF's P2PRG (from = Rich Woundy?), where it takes a $3,000 PC to support 5,000 concurrent = streams. That's cheap! * Simplicity: it never occurred to me that why we must have storage = servers, called CDN, sitting all over the place, while some simple = caching would be sufficient. In PPlive's Sigcomm paper, it mentioned of = using 8/12G of Flash only, and no harddrive. (This may help answering = some copyright concerns). * Portability: people may argue uplink vs. inter-domain locality. But = all service providers need to do is inserting a few P2P edge caching = boxes in the network. If more locality is needed, add another one. Chunk = discovery and tracker manager are perfect for this. This is the line of reasoning I had: why not narrow the scope of PPSP, = and solve the caching problem first? =20 Once again, I don't think PPSP needs to deal with end users for now. In = fact, by forcing an open standard, you are taking away the leverage from = the existing P2P media companies, including PPlive and PPstream (as = mentioned in another draft of yours :-)). Nobody wins! =20 0.5 cents, =20 - Ping =20 2009/9/10 Ning Zong Hi, Ping, =20 End users will run PPSP. As addressed in charter, PPSP protocols could = run on multiple entities such as end users, caches, CDN nodes, etc. Here we talk about the standard protocols running on end users. What do = you mean by non-technical issues? If you mean security, privacy and = copyrights issues, I think not only PPSP, but some other BoF/WGs have = same issues. You are perfectly right, they will be not in the working = scope (but need some considerations during the WG work). =20 BR, Ning Zong=20 =20 _____ =20 Ning, =20 We are in agreement here. So, you have listed three objectives for PPSP: =20 1. Standard interface to CDN/Cache 2. Enable media providers to stream content through standard interfaces 3. Help the service providers to manage their network/links better. =20 So, curious, does it require the end users to run PPSP as well? The = problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) = seems to assume that is the case. (If I am not mistaken, all the = "proprietary protocols" listed in Section 3.1 are client P2P = applications). If yes, you have a wide scope of non-technical issues to = deal with. If no, then you need to make it clear in the documents. =20 Thanks for clarification. =20 Ping 2009/9/10 Ning Zong Hi, Ping, =20 Thank you for your comments, please see in-line. =20 _____ =20 Ning, =20 I'd think that it is very important to emphasis the target users of the = work, which has been quoted as "intelligent endpoints, caches, content = distribution network nodes, and/or other edge devices." =20 [Ning Zong] This is a good suggestion. =20 If possible, I would hope that further specification, clarification and = constraints to be added in one of the documents. =20 The reasoning is that, if the work is to enable further proliferation of = P2P clients within the networks, then the WG needs to address issues = including security, privacy and copyrights extensively. This may be = above and beyond technology, and is probably outside the scope of PPSP. =20 On the other hand, if the work is to enable more efficient streaming = content distribtution within a controlled environment by leveraging = mechanisms such as tracker management and chuck discovery, then the work = is well understood, and can be clearly defined, specified and = experimented in the near future. =20 [Ning Zong] If I understand your question correctly, this is related to = the incentives of PPSP work. The clarification of incentives are further = provided in problem statement. IMO, the second point in your comments is = closer to current intention of PPSP. To be brief, the intention include = (maybe not limited to): 1) enable more efficient streaming to integrate = 3rd party devices, e.g. cache/CDN nodes; 2) enable streaming vendors to = accomplish content distribution via some standard API, thus reduce the = time-to-market and maybe cost, we hope; 3) enable ISPs to construct = standard streaming platform to run content provisioning services. =20 2 cents, =20 - Ping =20 2009/9/10 Ning Zong Hi, Lucy =20 The participating entities in the first paragraph include both peers and = trackers in P2P streaming systems. In second paragraph, we discuss the = roles of trackers - assuming that people know the basic meaning of = peers. Formal definitions of PPSP peers and PPSP trackers are defined in = Problem Statement Draft. =20 BR, Ning Zong =20 _____ =20 Hi YunFei and Christian, =20 One clarification: =E2=80=9Cparticipating entities=E2=80=9D listed in = the text are the peer in P2P streaming systems, is that right? Thus, = =E2=80=9CPPSP=E2=80=9D trackers are another participator in the systems. = Suggest stating that clearly in the first paragraph. =20 Cheers, Lucy =20 _____ =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = Schmidt, Christian 1. (NSN - DE/Munich) Sent: Thursday, September 10, 2009 3:03 AM To: ext zhangyunfei; ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion =20 Hi Yunfei, after reading your charter proposal, a text proposal and 2 questions for = clarifications. =20 Best Regards Christian Schmidt =20 =20 =20 Proposed new text for more transparency in main description: Old text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is = chartered to develop standard signaling protocols (called PPSP = protocols) for multiple types of entities (e.g. intelligent endpoints, = caches, content distribution network nodes, and/or other edge devices) = to participate in P2P streaming systems in both fixed and mobile = Internet. PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling = protocol between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP = peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling = protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains = lists of participating PPSP peers, each for a specific channel or = streaming file, and answers the queries from PPSP peers for candidate = PPSP peers. PPSP peers inform their status information to PPSP trackers, = exchange their chunk availability with other PPSP peers and/or PPSP = trackers, and ask other PPSP peers for wanted data.=20 =20 New text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is = chartered to develop standard signaling protocols (called PPSP = protocols) for P2P streaming systems in both fixed and mobile Internet. = Participating entities could be intelligent endpoints, caches, content = distribution network nodes, and/or other edge devices. =20 For a specific channel or streaming file, a PPSP tracker maintains lists = of particiating PPSP peers. The PPSP tracker answers queries from PPSP = peers for candidate PPSP peers. PPSP peers provide their status = information to PPSP trackers, exchange their chunk availability with = other PPSP peers and/or PPSP trackers, and ask other PPSP peers for = wanted data. PPSP protocols include the PPSP tracker protocol =E2=80=93 = a signaling protocol between =E2=80=9CPPSP trackers=E2=80=9D and = =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a = signaling protocol among =E2=80=9CPPSP peers=E2=80=9D.=20 =20 Architectural survey 3. An "architectural survey" document explaining the current P2P = streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice. It is good to have a description of the current P2P streaming = architecture. What is missing is the relation to the PPSP work. Will it = contain a proposal for the PPSP architecture? =20 Usage document 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols = defined above, along with existing IETF protocols, such as RELAOD, ALTO = and RTSP, can inter-operate; and how they may be integrated together to = produce complete P2P streaming systems. This sounds more like a "interop document". Was this the intention? =20 =20 =20 =20 =20 =20 =20 =20 _____ =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = ext zhangyunfei Sent: Thursday, September 10, 2009 8:24 AM To: ppsp@ietf.org Subject: [ppsp] ppsp charter discussion =20 Dear all, The following is the modified version of PPSP charter(An early = version was published in the IETF PPSP wiki page).Please review it and = any comments and suggestions are highly appreciated. =20 BR Yunfei -------------------------------------------------------- Description of PPSP Working Group: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is = chartered to develop standard signaling protocols (called PPSP = protocols) for multiple types of entities (e.g. intelligent endpoints, = caches, content distribution network nodes, and/or other edge devices) = to participate in P2P streaming systems in both fixed and mobile = Internet. PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling = protocol between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP = peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling = protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains = lists of participating PPSP peers, each for a specific channel or = streaming file, and answers the queries from PPSP peers for candidate = PPSP peers. PPSP peers inform their status information to PPSP trackers, = exchange their chunk availability with other PPSP peers and/or PPSP = trackers, and ask other PPSP peers for wanted data.=20 =20 This WG's primary tasks are to produce: 1. A =E2=80=9Cproblem statement=E2=80=9D document describing the = problems, incentives, and scope of developing the PPSP protocols, as = well as common terminologies and concepts. =20 2. A =E2=80=9Crequirements=E2=80=9D document listing the requirements on = the designed PPSP protocols (e.g., general functionality and performance = requirements of PPSP protocols or basic types of information that PPSP = protocols should communicate to facilitate P2P streaming). 3. An "architectural survey" document explaining the current P2P = streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice. 4. A proposed standard defining the PPSP peer protocol. This protocol = will define how PPSP peers advertise chunk availability. The protocol = will also define the requests and responses of chunks among PPSP peers. =20 5. A proposed standard defining the PPSP tracker protocol. This protocol = will define how PPSP peers inform and request information from PPSP = trackers and how PPSP trackers reply to the requests. =20 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols = defined above, along with existing IETF protocols, such as RELAOD, ALTO = and RTSP, can inter-operate; and how they may be integrated together to = produce complete P2P streaming systems. =20 7. Optionally a =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile BCP = document) to evaluate PPSP with and without Mobile IP support when there = are a lot of mobile peers in the system. The work planned for the PPSP WG is distinct from, but requires close = participation with, work in other IETF WGs, particularly P2PSIP, ALTO = and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, = ALTO, and MMUSIC behaviors. If PPSP determines that extensions to = P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define such = extensions and present to the respective working groups. The design of PPSP has to consider security/privacy issues. The protocol = document will contain a complete description of the security/privacy = issues that PPSP should address. =20 The following topics are excluded from this WG's scope: 1. Transport mechanisms for data transmission among PPSP peers, e.g. = using TCP or UDP, unicast or multicast, etc. 2. Network coding mechanisms in P2P streaming. Network coding may be = used in P2P streaming, but its support is beyond the scope of current = charter. =20 3. Play-out mechanisms including streaming control (e.g., pause, = fast-forward, and rewind). =20 4. Algorithms that may be different in different deployments (e.g., = chunk selection, local storage strategies). =20 5. Research type questions related to P2P streaming. This WG will = instead forward such questions to the IRTF P2PRG or other RG as = appropriate. Examples include cache management. Goals and Milestones: Apr 2010 Working Group Last Call for problem statement Jun 2010 Submit problem statement to IESG as Informational document Aug 2010 Working Group Last Call for architecture survey Aug 2010 Working Group Last Call for requirements Oct 2010 Submit architecture survey to IESG as Informational document Oct 2010 Submit requirements to IESG as Informational document Apr 2011 Working Group Last Call for PPSP peer protocol Apr 2011 Working Group Last Call for PPSP tracker protocol Aug 2011 Submit PPSP peer protocol to IESG as Proposed Standard Aug 2011 Submit PPSP tracker protocol to IESG as Proposed Standard Nov 2011 Working Group Last Call of usage document Nov 2011 Working Group Last Call of mobility BCP document Jan 2012 Submit usage document to IESG as Informational document Jan 2012 Submit mobility BCP document to IESG as Informational document Apr 2012 Dissolve or re-charter=20 =20 =20 _____ =20 zhangyunfei 2009-09-10 _____ =20 _______________________________________________ ppsp mailing list ppsp@ietf.org https://www.ietf.org/mailman/listinfo/ppsp =20 _____ =20 =20 _____ =20 =20 =20 ------=_NextPart_000_0057_01CA36D6.9572CB30 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Ping,

Maybe you should look at the DECADE work https://www.ietf.or= g/mailman/listinfo/decade

There was a BAR BOF in Stockholm discussing caching = solutions for P2P applications.

The scope of PPSP is to address the protocol from peers = to tracker and between peers in order to get the relevant chunks. =

 

Roni Even

 

From:= ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = Ping Pan
Sent: Friday, September 11, 2009 1:26 AM
To: Ning Zong
Cc: ppsp@ietf.org
Subject: Re: [ppsp] ppsp charter discussion

 

Rich,

 

Thanks for the correction. 

Ping Pan  (408) 655-6547

On Thu, Sep 10, 2009 at 2:55 PM, Ping Pan <ping@pingpan.org> = wrote:

Ning,

 

Thanks for the clarification.

 

Here is my main concern: currently, PPSP is = positioned as yet another streaming protocol to the end users.

 

IMHO, the end users can care less where the traffic = are streaming from so long it's convenient, safe and have = reasonable QoE. Do we need another streaming protocol to do this?

 

One may argue the advantages in P2P. But, to many, = PPSP is actually endorsing the following:

  • I need to install a special software from = the ASP's, which may use my local CPU and storage for P2P operation, = and do some other things that I don't know about.
  • The software enables me to watch some = movies from the peers, who may be chased by the lawyers from some media companies. 
  • On top of that, the service networks, = especially, those who have to pay for the expensive backhaul links, may be sick = of the traffic volume, and may install DPI boxes at every possible = intersection to drop my video stream traffic (here goes my QoE).

In short, I don't think it's wise to address all of = the above in one WG, one architecture or one protocol. Rather, it would be = nice to focus on what P2P streaming is good at, use it to solve a couple of real = problems, and move on to the next.

 

We must not ignore the advancement of the following = in P2P streaming:

  • Cost efficiency: I saw a presentation from last IETF's P2PRG (from Rich = Woundy?), where it takes a $3,000 PC to support 5,000 concurrent streams. That's = cheap!
  • Simplicity: it never occurred to = me that why we must have storage servers, called CDN, sitting all over = the place, while some simple caching would be sufficient. In PPlive's = Sigcomm paper, it mentioned of using 8/12G of Flash only, and no harddrive. = (This may help answering some copyright concerns).
  • Portability: people may argue uplink vs. inter-domain locality. But all service providers need to do is inserting a few P2P edge caching boxes in the network. If more = locality is needed, add another one. Chunk discovery and tracker manager are = perfect for this.

This is the line of reasoning I had: why not narrow = the scope of PPSP, and solve the caching problem first?

 

Once again, I don't think PPSP needs to deal with = end users for now. In fact, by forcing an open standard, you are taking away the = leverage from the existing P2P media companies, including PPlive and PPstream (as mentioned in another draft of yours :-)). Nobody wins!

 

0.5 cents,

 

- Ping

 

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

 

End users will run PPSP. As addressed in charter, = PPSP protocols could run on multiple entities such as end users, caches, CDN = nodes, etc.

Here we talk about the standard protocols = running on end users. What do you mean by non-technical issues? If you mean = security, privacy and copyrights issues, I think not only PPSP, but some other BoF/WGs have same issues. You are perfectly right, they will be not = in the working scope (but need some considerations during the WG = work).

 

BR,

Ning Zong 

 

Ning,

 

We = are in agreement here. So, you have listed three objectives for = PPSP:

 

1. = Standard interface to CDN/Cache

2. = Enable media providers to stream content through standard = interfaces

3. = Help the service providers to manage their network/links = better.

 

So, curious, does it require the end users to run = PPSP as well? The problem = statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems to assume that = is the case. (If I am not mistaken, all the "proprietary protocols" = listed in Section 3.1 are client P2P applications). If yes, you have a wide = scope of non-technical issues to deal with. If no, then you need to make it clear = in the documents.

 

Thanks for clarification.

 

Ping

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

 

Thank you for your comments, please see = in-line.

 

Ning,

 

I'd think that it is very important to emphasis the target users of the work, = which has been quoted as "intelligent endpoints, caches, content distribution network nodes, and/or other edge devices."

 

[Ning Zong] This is a good suggestion.

 

If possible, I would hope that further specification, clarification and constraints to be added in one of the documents.

 

The reasoning is that, if the work is to enable = further proliferation of P2P clients within the networks, then the WG needs to address issues = including security, privacy and copyrights extensively. This may be above and = beyond technology, and is probably outside the scope of = PPSP.

 

On the other hand, if the work is to enable more efficient streaming content distribtution within a controlled environment by leveraging = mechanisms such as tracker management and chuck discovery, then the work is well understood, and can be clearly defined, specified and experimented in = the near future.

 

[Ning Zong] If I understand your question correctly, this is related to the incentives of PPSP work. The clarification of incentives are further = provided in problem statement. IMO, the second point in your comments is closer to current intention of PPSP. To be brief, the intention include = (maybe not limited to): 1) enable more efficient streaming to = integrate 3rd party devices, e.g. cache/CDN nodes; 2) enable streaming = vendors to accomplish content distribution via some standard API, thus reduce the time-to-market and maybe cost, we hope; 3) enable ISPs to construct standard streaming platform to run content provisioning services.

 

2 cents,

 

- Ping

 

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Lucy

 

The participating entities in the first paragraph = include both peers and trackers in P2P streaming systems. In second paragraph, = we discuss the roles of trackers - assuming that people know the = basic meaning of peers.

Formal definitions of PPSP peers and PPSP trackers = are defined in Problem Statement Draft.

 

BR,

Ning Zong

 

Hi= YunFei and Christian,

 

On= e clarification: =E2=80=9Cparticipating entities=E2=80=9D listed in the = text are the peer in P2P streaming systems, is that right? Thus, =E2=80=9CPPSP=E2=80=9D trackers = are another participator in the systems.  Suggest stating that clearly in the = first paragraph.

 

Ch= eers,

Lu= cy

 

From:= ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, Christian 1. (NSN - DE/Munich)
Sent: Thursday, September 10, 2009 3:03 AM
To: ext zhangyunfei; ppsp@ietf.org
Subject: Re: [ppsp] ppsp charter discussion

 

Hi= Yunfei,

af= ter reading your charter proposal, a text proposal and 2 questions for clarifications.

 

Be= st Regards

Ch= ristian Schmidt

 

 

 

Proposed new text for more transparency in main = description:

Old = text:

The = Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop = standard signaling protocols (called PPSP protocols) for multiple types of = entities (e.g. intelligent endpoints, caches, content distribution network nodes, = and/or other edge devices) to participate in P2P streaming systems in both = fixed and mobile Internet.


PPSP = protocols include the PPSP tracker protocol =E2=80=93 a signaling protocol between = =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer = protocol =E2=80=93 a signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains lists of = participating PPSP peers, each for a specific channel or streaming file, and answers the queries = from PPSP peers for candidate PPSP peers. PPSP peers inform their status = information to PPSP trackers, exchange their chunk availability with other PPSP = peers and/or PPSP trackers, and ask other PPSP peers for wanted = data.

 

New text:

The Peer-to-Peer = (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop = standard signaling protocols (called PPSP protocols) for P2P streaming = systems in both fixed and mobile Internet. Participating entities could be = intelligent endpoints, caches, content distribution network nodes, and/or other edge devices.

 

For a specific = channel or streaming file, a PPSP tracker maintains lists of particiating PPSP = peers. The PPSP tracker answers queries from PPSP peers for candidate PPSP peers. = PPSP peers provide their status information to PPSP trackers, exchange = their chunk availability with other PPSP peers and/or PPSP trackers, and ask = other PPSP peers for wanted data. PPSP protocols include the PPSP tracker = protocol =E2=80=93 a signaling protocol between =E2=80=9CPPSP trackers=E2=80=9D and = =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling protocol among =E2=80=9CPPSP = peers=E2=80=9D.

 

Architectural = survey

3. An "architectural survey" document explaining the current P2P streaming = architectures, in particular tracker-based P2P streaming, and key issues in best = practice.

It is good to = have a description of the current P2P streaming architecture. What is missing = is the relation to the PPSP work. Will it contain a proposal for the PPSP architecture?

 

Usage = document

6. A = =E2=80=9Cusage document=E2=80=9D explaining how the protocols defined above, along with existing IETF = protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming = systems.

This sounds more = like a "interop document". Was this the = intention?

 

 

 

 

 

 

 

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei
Sent: Thursday, September 10, 2009 8:24 AM
To: ppsp@ietf.org
Subject: [ppsp] ppsp charter discussion

 


Dear = all,

   The = following is the modified version of PPSP charter(An early version was published in the = IETF PPSP wiki page).Please review it and any comments and suggestions are = highly appreciated.

 

           BR

            Yunfei

--------------------------------------------------------=

Description of PPSP Working Group:

The Peer-to-Peer (P2P) = Streaming Protocol working group (PPSP WG) is chartered to develop standard = signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, = and/or other edge devices) to participate in P2P streaming systems in both fixed and = mobile Internet.


PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling = protocol between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and = the PPSP peer protocol =E2=80=93 a signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains = lists of participating PPSP peers, each for a specific channel or streaming file, and answers = the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with = other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. =

 

This WG's primary tasks are to produce:
1. A =E2=80=9Cproblem statement=E2=80=9D document describing the = problems, incentives, and scope of developing the PPSP protocols, as well as common terminologies = and concepts.

 

2. A = =E2=80=9Crequirements=E2=80=9D document listing the requirements on the designed PPSP protocols (e.g., general = functionality and performance requirements of PPSP protocols or basic types of = information that PPSP protocols should communicate to facilitate P2P = streaming).


3. An "architectural survey" document explaining the current = P2P streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice.


4. A proposed standard defining the PPSP peer protocol. This protocol = will define how PPSP peers advertise chunk availability. The protocol will = also define the requests and responses of chunks among PPSP = peers.

 

5. A proposed standard defining the PPSP tracker protocol. This protocol will = define how PPSP peers inform and request information from PPSP trackers and how = PPSP trackers reply to the requests.

 

6. A =E2=80=9Cusage = document=E2=80=9D explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming = systems.

 

7. Optionally a = =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile BCP document) to evaluate PPSP with and = without Mobile IP support when there are a lot of mobile peers in the = system.


The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO = and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, = and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, = MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups.


The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy = issues that PPSP should address.

 

The following topics are = excluded from this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. = using TCP or UDP, unicast or multicast, etc.


2. Network coding mechanisms in P2P streaming. Network coding may be = used in P2P streaming, but its support is beyond the scope of current = charter.

 

3. Play-out mechanisms = including streaming control (e.g., pause, fast-forward, and = rewind).

 

4. Algorithms that may be = different in different deployments (e.g., chunk selection, local storage = strategies).

 

5. Research type questions = related to P2P streaming. This WG will instead forward such questions to the = IRTF P2PRG or other RG as appropriate. Examples include cache = management.

Goals = and Milestones:

Apr = 2010

Working Group Last Call = for problem statement

Jun = 2010

Submit problem statement = to IESG as Informational document

Aug = 2010

Working Group Last Call = for architecture survey

Aug = 2010

Working Group Last Call = for requirements

Oct

2010

Submit architecture = survey to IESG as Informational document

Oct = 2010

Submit requirements to = IESG as Informational document

Apr = 2011

Working Group Last Call = for PPSP peer protocol

Apr

2011

Working Group Last Call = for PPSP tracker protocol

Aug = 2011

Submit PPSP peer protocol = to IESG as Proposed Standard

Aug = 2011

Submit PPSP tracker = protocol to IESG as Proposed Standard

Nov = 2011

Working Group Last Call = of usage document

Nov = 2011

Working Group Last Call = of mobility BCP document

Jan = 2012

Submit usage document to = IESG as Informational document

Jan = 2012

Submit mobility BCP = document to IESG as Informational document

Apr = 2012

Dissolve or re-charter =

 

 

zhangyunfei

2009-09-10


_______________________________________________
ppsp mailing list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp

 

 

 

 

------=_NextPart_000_0057_01CA36D6.9572CB30-- From ping@pingpan.org Wed Sep 16 08:01:38 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id D30E13A6851 for ; Wed, 16 Sep 2009 08:01:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -5.181 X-Spam-Level: X-Spam-Status: No, score=-5.181 tagged_above=-999 required=5 tests=[AWL=0.195, BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, RCVD_IN_DNSWL_MED=-4] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QUELNla6maHY for ; Wed, 16 Sep 2009 08:01:35 -0700 (PDT) Received: from exprod7og103.obsmtp.com (exprod7og103.obsmtp.com [64.18.2.159]) by core3.amsl.com (Postfix) with SMTP id 351FA3A6ABE for ; Wed, 16 Sep 2009 08:01:35 -0700 (PDT) Received: from source ([209.85.216.178]) by exprod7ob103.postini.com ([64.18.6.12]) with SMTP ID DSNKSrD+AGqC23/znjEp6UFy2R9MzWV8Gnhq@postini.com; Wed, 16 Sep 2009 08:02:25 PDT Received: by mail-px0-f178.google.com with SMTP id 8so4421968pxi.27 for ; Wed, 16 Sep 2009 08:02:24 -0700 (PDT) MIME-Version: 1.0 Received: by 10.142.202.20 with SMTP id z20mr659837wff.171.1253113344093; Wed, 16 Sep 2009 08:02:24 -0700 (PDT) In-Reply-To: <4ab0c69d.01135e0a.6ede.7383@mx.google.com> References: <0KPR00LQ0UX6ED@szxml01-in.huawei.com> <22d04a930909101455v3df5ec7dq3241e6aa5e373f9b@mail.gmail.com> <22d04a930909101525i69a3cd78gf028040e0e2c5b9a@mail.gmail.com> <4ab0c69d.01135e0a.6ede.7383@mx.google.com> From: Ping Pan Date: Wed, 16 Sep 2009 08:02:04 -0700 Message-ID: <22d04a930909160802h1f0ef7f1s296a1e8d9cae7df5@mail.gmail.com> To: Roni Even Content-Type: multipart/alternative; boundary=000e0cd32e1ebcee630473b32f74 Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Sep 2009 15:01:39 -0000 --000e0cd32e1ebcee630473b32f74 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Roni, The DECADE BAR BOF had presented the the problem statement as: - How are P2P contents detected and stored in in-network storage? - How are P2P contents discovered and read from in-network storage? - What is the protocol to communicate with in-network storage? IMO, the work is best exemplified by the SAILOR proposal. If I am not mistaken, DECADE is to deal with STORAGE using P2P as the underlying transport mechanism. It's not clear to me though if DECADE is also going to introduce a protocol that is similar to PPSP, or are they the same? If DECADE is well defined an= d focused, what are we doing in PPSP? :-) Anyway, I am not objecting the PPSP work. Rather, if PPSP is to define the protocol between P2P nodes and the interaction with the tracker manager during streaming applications, and can be extended and addressed in the are= a of content access control in the future, then say so and focus on it in various drafts. Thanks! Ping On Wed, Sep 16, 2009 at 4:04 AM, Roni Even wrote: > Hi Ping, > > Maybe you should look at the DECADE work > https://www.ietf.org/mailman/listinfo/decade > > There was a BAR BOF in Stockholm discussing caching solutions for P2P > applications. > > The scope of PPSP is to address the protocol from peers to tracker and > between peers in order to get the relevant chunks. > > > > Roni Even > > > > *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf O= f > *Ping Pan > *Sent:* Friday, September 11, 2009 1:26 AM > *To:* Ning Zong > *Cc:* ppsp@ietf.org > > *Subject:* Re: [ppsp] ppsp charter discussion > > > > Rich, > > > > Thanks for the correction. > > Ping Pan (408) 655-6547 > > On Thu, Sep 10, 2009 at 2:55 PM, Ping Pan wrote: > > Ning, > > > > Thanks for the clarification. > > > > Here is my main concern: currently, PPSP is positioned as yet another > streaming protocol to the end users. > > > > IMHO, the end users can care less where the traffic are streaming from so > long it's convenient, safe and have reasonable QoE. Do we need another > streaming protocol to do this? > > > > One may argue the advantages in P2P. But, to many, PPSP is actually > endorsing the following: > > - I need to install a special software from the ASP's, which may use m= y > local CPU and storage for P2P operation, and do some other things that= I > don't know about. > - The software enables me to watch some movies from the peers, who may > be chased by the lawyers from some media companies. > - On top of that, the service networks, especially, those who have to > pay for the expensive backhaul links, may be sick of the traffic volum= e, and > may install DPI boxes at every possible intersection to drop my video = stream > traffic (here goes my QoE). > > In short, I don't think it's wise to address all of the above in one WG, > one architecture or one protocol. Rather, it would be nice to focus on wh= at > P2P streaming is good at, use it to solve a couple of real problems, and > move on to the next. > > > > We must not ignore the advancement of the following in P2P streaming: > > - Cost efficiency: I saw a presentation from last IETF's P2PRG (from > Rich Woundy?), where it takes a $3,000 PC to support 5,000 concurrent > streams. That's cheap! > - Simplicity: it never occurred to me that why we must have storage > servers, called CDN, sitting all over the place, while some simple cac= hing > would be sufficient. In PPlive's Sigcomm paper, it mentioned of using = 8/12G > of Flash only, and no harddrive. (This may help answering some copyrig= ht > concerns). > - Portability: people may argue uplink vs. inter-domain locality. But > all service providers need to do is inserting a few P2P edge caching b= oxes > in the network. If more locality is needed, add another one. Chunk dis= covery > and tracker manager are perfect for this. > > This is the line of reasoning I had: why not narrow the scope of PPSP, > and solve the caching problem first? > > > > Once again, I don't think PPSP needs to deal with end users for now. In > fact, by forcing an open standard, you are taking away the leverage from = the > existing P2P media companies, including PPlive and PPstream (as mentioned= in > another draft of yours :-)). Nobody wins! > > > > 0.5 cents, > > > > - Ping > > > > 2009/9/10 Ning Zong > > Hi, Ping, > > > > End users will run PPSP. As addressed in charter, PPSP protocols could ru= n > on multiple entities such as end users, caches, CDN nodes, etc. > > Here we talk about the standard protocols running on end users. What do y= ou > mean by non-technical issues? If you mean security, privacy and copyright= s > issues, I think not only PPSP, but some other BoF/WGs have same issues. Y= ou > are perfectly right, they will be not in the working scope (but need some > considerations during the WG work). > > > > BR, > > Ning Zong > > > ------------------------------ > > Ning, > > > > We are in agreement here. So, you have listed three objectives for PPSP: > > > > 1. Standard interface to CDN/Cache > > 2. Enable media providers to stream content through standard interfaces > > 3. Help the service providers to manage their network/links better. > > > > So, curious, does it require the end users to run PPSP as well? The > problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems= to > assume that is the case. (If I am not mistaken, all the "proprietary > protocols" listed in Section 3.1 are client P2P applications). If yes, yo= u > have a wide scope of non-technical issues to deal with. If no, then you n= eed > to make it clear in the documents. > > > > Thanks for clarification. > > > > Ping > > 2009/9/10 Ning Zong > > Hi, Ping, > > > > Thank you for your comments, please see in-line. > > > ------------------------------ > > Ning, > > > > I'd think that it is very important to emphasis the target users of the > work, which has been quoted as "intelligent endpoints, caches, content > distribution network nodes, and/or other edge devices." > > > > [Ning Zong] This is a good suggestion. > > > > If possible, I would hope that further specification, clarification and > constraints to be added in one of the documents. > > > > The reasoning is that, if the work is to enable further proliferation of > P2P clients within the networks, then the WG needs to address issues > including security, privacy and copyrights extensively. This may be above > and beyond technology, and is probably outside the scope of PPSP. > > > > On the other hand, if the work is to enable more efficient streaming > content distribtution within a controlled environment by leveraging > mechanisms such as tracker management and chuck discovery, then the work = is > well understood, and can be clearly defined, specified and experimented i= n > the near future. > > > > [Ning Zong] If I understand your question correctly, this is related to t= he > incentives of PPSP work. The clarification of incentives are further > provided in problem statement. IMO, the second point in your comments is > closer to current intention of PPSP. To be brief, the intention include > (maybe not limited to): 1) enable more efficient streaming to integrate 3= rd > party devices, e.g. cache/CDN nodes; 2) enable streaming vendors to > accomplish content distribution via some standard API, thus reduce > the time-to-market and maybe cost, we hope; 3) enable ISPs to > construct standard streaming platform to run content provisioning service= s. > > > > 2 cents, > > > > - Ping > > > > 2009/9/10 Ning Zong > > Hi, Lucy > > > > The participating entities in the first paragraph include both peers and > trackers in P2P streaming systems. In second paragraph, we discuss the ro= les > of trackers - assuming that people know the basic meaning of peers. > > Formal definitions of PPSP peers and PPSP trackers are defined in Problem > Statement Draft. > > > > BR, > > Ning Zong > > > ------------------------------ > > Hi YunFei and Christian, > > > > One clarification: =E2=80=9Cparticipating entities=E2=80=9D listed in the= text are the peer > in P2P streaming systems, is that right? Thus, =E2=80=9CPPSP=E2=80=9D tra= ckers are another > participator in the systems. Suggest stating that clearly in the first > paragraph. > > > > Cheers, > > Lucy > > > ------------------------------ > > *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf O= f > *Schmidt, Christian 1. (NSN - DE/Munich) > *Sent:* Thursday, September 10, 2009 3:03 AM > *To:* ext zhangyunfei; ppsp@ietf.org > *Subject:* Re: [ppsp] ppsp charter discussion > > > > Hi Yunfei, > > after reading your charter proposal, a text proposal and 2 questions for > clarifications. > > > > Best Regards > > Christian Schmidt > > > > > > > > Proposed new text for more transparency in main description: > > Old text: > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP protocols) > for multiple types of entities (e.g. intelligent endpoints, caches, conte= nt > distribution network nodes, and/or other edge devices) to participate in = P2P > streaming systems in both fixed and mobile Internet. > > > PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling pr= otocol > between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D,= and the PPSP peer protocol =E2=80=93 a > signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker mai= ntains lists of > participating PPSP peers, each for a specific channel or streaming file, = and > answers the queries from PPSP peers for candidate PPSP peers. PPSP peers > inform their status information to PPSP trackers, exchange their chunk > availability with other PPSP peers and/or PPSP trackers, and ask other PP= SP > peers for wanted data. > > > > New text: > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP > protocols) for P2P streaming systems in both fixed and mobile Internet. > Participating entities could be intelligent endpoints, caches, content > distribution network nodes, and/or other edge devices. > > > > For a specific channel or streaming file, a PPSP tracker maintains lists = of > particiating PPSP peers. The PPSP tracker answers queries from PPSP peers > for candidate PPSP peers. PPSP peers provide their status information to > PPSP trackers, exchange their chunk availability with other PPSP peers > and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP > protocols include the PPSP tracker protocol =E2=80=93 a signaling protoco= l between > =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and the= PPSP peer protocol =E2=80=93 a signaling > protocol among =E2=80=9CPPSP peers=E2=80=9D. > > > > Architectural survey > > 3. An "architectural survey" document explaining the current P2P streamin= g > architectures, in particular tracker-based P2P streaming, and key issues = in > best practice. > > It is good to have a description of the current P2P streaming architectur= e. > What is missing is the relation to the PPSP work. Will it contain a propo= sal > for the PPSP architecture? > > > > Usage document > > 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols define= d above, along > with existing IETF protocols, such as RELAOD, ALTO and RTSP, can > inter-operate; and how they may be integrated together to produce complet= e > P2P streaming systems. > > This sounds more like a "interop document". Was this the intention? > > > > > > > > > > > > > > > > > ------------------------------ > > *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf O= f > *ext zhangyunfei > *Sent:* Thursday, September 10, 2009 8:24 AM > *To:* ppsp@ietf.org > *Subject:* [ppsp] ppsp charter discussion > > > > > *Dear all,* > > * The following is the modified version of PPSP charter(An early versio= n > was published in the IETF PPSP wiki page).Please review it and any commen= ts > and suggestions are highly appreciated.* > > > > * BR* > > * Yunfei* > > *--------------------------------------------------------* > > *Description of PPSP Working Group:* > > The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is > chartered to develop standard signaling protocols (called PPSP protocols) > for multiple types of entities (e.g. intelligent endpoints, caches, conte= nt > distribution network nodes, and/or other edge devices) to participate in = P2P > streaming systems in both fixed and mobile Internet. > > > PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling pr= otocol > between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D,= and the PPSP peer protocol =E2=80=93 a > signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker mai= ntains lists of > participating PPSP peers, each for a specific channel or streaming file, = and > answers the queries from PPSP peers for candidate PPSP peers. PPSP peers > inform their status information to PPSP trackers, exchange their chunk > availability with other PPSP peers and/or PPSP trackers, and ask other PP= SP > peers for wanted data. > > > > This WG's primary tasks are to produce: > 1. A =E2=80=9Cproblem statement=E2=80=9D document describing the problems= , incentives, and > scope of developing the PPSP protocols, as well as common terminologies a= nd > concepts. > > > > 2. A =E2=80=9Crequirements=E2=80=9D document listing the requirements on = the designed PPSP > protocols (e.g., general functionality and performance requirements of PP= SP > protocols or basic types of information that PPSP protocols should > communicate to facilitate P2P streaming). > > > 3. An "architectural survey" document explaining the current P2P streamin= g > architectures, in particular tracker-based P2P streaming, and key issues = in > best practice. > > > 4. A proposed standard defining the PPSP peer protocol. This protocol wil= l > define how PPSP peers advertise chunk availability. The protocol will als= o > define the requests and responses of chunks among PPSP peers. > > > > 5. A proposed standard defining the PPSP tracker protocol. This protocol > will define how PPSP peers inform and request information from PPSP track= ers > and how PPSP trackers reply to the requests. > > > > 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols define= d above, along > with existing IETF protocols, such as RELAOD, ALTO and RTSP, can > inter-operate; and how they may be integrated together to produce complet= e > P2P streaming systems. > > > > 7. Optionally a =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile BCP = document) to > evaluate PPSP with and without Mobile IP support when there are a lot of > mobile peers in the system. > > > The work planned for the PPSP WG is distinct from, but requires close > participation with, work in other IETF WGs, particularly P2PSIP, ALTO and > MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, = and > MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMU= SIC > are needed, PPSP will seek to define such extensions and present to the > respective working groups. > > > The design of PPSP has to consider security/privacy issues. The protocol > document will contain a complete description of the security/privacy issu= es > that PPSP should address. > > > > The following topics are excluded from this WG's scope: > 1. Transport mechanisms for data transmission among PPSP peers, e.g. usin= g > TCP or UDP, unicast or multicast, etc. > > > 2. Network coding mechanisms in P2P streaming. Network coding may be used > in P2P streaming, but its support is beyond the scope of current charter. > > > > 3. Play-out mechanisms including streaming control (e.g., pause, > fast-forward, and rewind). > > > > 4. Algorithms that may be different in different deployments (e.g., chunk > selection, local storage strategies). > > > > 5. Research type questions related to P2P streaming. This WG will instead > forward such questions to the IRTF P2PRG or other RG as appropriate. > Examples include cache management. > > *Goals and Milestones:* > > Apr 2010 > > Working Group Last Call for problem statement > > Jun 2010 > > Submit problem statement to IESG as Informational document > > Aug 2010 > > Working Group Last Call for architecture survey > > Aug 2010 > > Working Group Last Call for requirements > > Oct > > 2010 > > Submit architecture survey to IESG as Informational document > > Oct 2010 > > Submit requirements to IESG as Informational document > > Apr 2011 > > Working Group Last Call for PPSP peer protocol > > Apr > > 2011 > > Working Group Last Call for PPSP tracker protocol > > Aug 2011 > > Submit PPSP peer protocol to IESG as Proposed Standard > > Aug 2011 > > Submit PPSP tracker protocol to IESG as Proposed Standard > > Nov 2011 > > Working Group Last Call of usage document > > Nov 2011 > > Working Group Last Call of mobility BCP document > > Jan 2012 > > Submit usage document to IESG as Informational document > > Jan 2012 > > Submit mobility BCP document to IESG as Informational document > > Apr 2012 > > Dissolve or re-charter > > > > > ------------------------------ > > zhangyunfei > > 2009-09-10 > ------------------------------ > > > _______________________________________________ > ppsp mailing list > ppsp@ietf.org > https://www.ietf.org/mailman/listinfo/ppsp > > > ------------------------------ > > > ------------------------------ > > > > > --000e0cd32e1ebcee630473b32f74 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Roni,

The DECADE BAR BOF had presented the the problem statement as:=

- How are P2P contents detected and stored in in-network storage?- How are P2P contents discovered and read from in-network storage?
- What is the protocol to communicate with in-network storage?

IMO,= the work is best exemplified by the SAILOR proposal. If I am not mistaken,= DECADE is to deal with STORAGE using P2P as the underlying transport mecha= nism.

It's not clear to me though if DECADE is also going to introduce a = protocol that is similar to PPSP, or are they the same? If DECADE is well d= efined and focused, what are we doing in PPSP? :-)

Anyway, I am not = objecting the PPSP work. Rather, if PPSP is to define the protocol between= P2P nodes and the interaction with the tracker manager during streaming ap= plications, and can be extended and addressed in the area of content access= control in the future, then say so and focus on it in various drafts.

Thanks!

Ping


On Wed, Sep 16, 2009 at 4:04 AM, Roni Ev= en <ron.even= .tlv@gmail.com> wrote:

Hi Ping,

Maybe you shou= ld look at the DECADE work https://www.ietf.org/mailman/listinfo/decade

There was a BA= R BOF in Stockholm discussing caching solutions for P2P applications.

The scope of P= PSP is to address the protocol from peers to tracker and between peers in order to get the relevant chunks.

=C2=A0<= /p>

Roni Even

=C2=A0<= /p>

From: ppsp-bounces@iet= f.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Ping Pan
Sent: Friday, September 11, 2009 1:26 AM
To: Ning Zong
Cc: ppsp@ietf.org=


Subject: Re: [ppsp] ppsp charter discussion

=C2=A0

Rich,

=C2=A0

Thanks for the correction.=C2=A0

Ping Pan =C2=A0(408) 655-6547

On Thu, Sep 10, 2009 at 2:55 PM, Ping Pan <ping@pingpan.org> wrote:

Ning,

=C2=A0

Thanks for the clarification.

=C2=A0

Here is my main concern: currently, PPSP is positioned as yet another streaming protocol to the end users.

=C2=A0

IMHO, the end users can care less where the traffic are streaming from so long it's=C2=A0convenient,=C2=A0safe and have reasona= ble QoE. Do we need another streaming protocol to do this?

=C2=A0

One may argue the advantages in P2P. But, to many, PPSP is actually endorsing the following:

  • I need to install a special software from the ASP's, which may use my local CPU and storage for P2P operation, a= nd do some other things that I don't know about.
  • The software enables me to watch some movies from the peers, who may be chased by the lawyers from some media companies.=C2=A0
  • On top of that, the service networks, especially, those who have to pay for the expensive backhaul links, may be sick of= the traffic volume, and may install DPI boxes at every possible intersecti= on to drop my video stream traffic (here goes my QoE).

In short, I don't think it's wise to address all of the above in one WG, one architecture or one protocol. Rather, it would be nice= to focus on what P2P streaming is good at, use it to solve a couple of real problems= , and move on to the next.

=C2=A0

We must not ignore the advancement of the following in P2P streaming:

  • Cost efficiency: I saw a=C2=A0presentation=C2=A0from last IETF's P2PRG (from Rich Woundy?= ), where it takes a $3,000 PC to support 5,000 concurrent streams. That's c= heap!
  • Simplicity: it never=C2=A0occurred=C2=A0to me that why we must have storage servers, called CDN, sitting all over th= e place, while some simple caching would be sufficient. In PPlive's = Sigcomm paper, it mentioned of using 8/12G of Flash only, and no harddrive. (T= his may help answering some copyright concerns).
  • Portability: people may argue uplink vs. inter-domain=C2=A0locality. But all service providers need to do is inserting a few P2P edge caching boxes in the network. If more localit= y is needed, add another one. Chunk discovery and tracker manager are perfe= ct for this.

This is the line of reasoning I had: why not narrow the scope of PPSP, and solve the caching problem first?

=C2=A0

Once again, I don't think PPSP needs to deal with end users for now. In fact, by forcing an open standard, you are taking away the leve= rage from the existing P2P media companies, including PPlive and PPstream (as mentioned in another draft of yours :-)). Nobody wins!

=C2=A0

0.5 cents,

=C2=A0

- Ping

=C2=A0

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

=C2=A0

End users will run PPSP. As addressed in charter, PPSP protocols could run on multiple entities such as end users, caches, CDN nod= es, etc.

Here we=C2=A0talk about the standard protocols running on end users. What do you mean by non-technical issues? If you mean security, privacy and copyrights issues, I think not only PPSP, but some other BoF/WGs=C2=A0have same issues. You are perfectly right, they will be not in= the working scope (but need some considerations during the WG work).

=C2=A0

BR,

Ning Zong=C2=A0

=C2=A0

Ning,

=C2=A0

We are in agreement here.=C2=A0So, you have listed three=C2=A0objectives=C2=A0for PPS= P:

=C2=A0

1. Standard interface to CDN/Cache

2. Enable media providers to stream content through standard interfaces

3. Help the service providers to manage their network/links better.

=C2=A0

So, curious, does it require the end users to run PPSP as well?=C2=A0The problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems to assume that is t= he case. (If I am not mistaken, all the "proprietary protocols" list= ed in Section 3.1 are client P2P applications). If yes, you have a wide scope = of non-technical issues to deal with. If no, then you need to make it clear in= the documents.

=C2=A0

Thanks for clarification.

=C2=A0

Ping

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

=C2=A0

Thank you for your comments, please see in-line.

=C2=A0

Ning,=

=C2= =A0

I'= ;d think that it is very important to emphasis the target users of the work, which h= as been quoted as "intelligent endpoints, caches, content distribution network nodes, and/or other edge devices."

=C2= =A0

[Ning Zong] This is a good suggestion.

=C2= =A0

If possible, I would hope that further specification, clarification and constraints to be added in one of the documents.

=C2= =A0

The reasoning is that, if the work is to enable further=C2=A0proliferation=C2= =A0of P2P clients within the networks, then the WG needs to address issues includ= ing security, privacy and copyrights extensively. This may be above and beyond technology, and=C2=A0is probably outside the scope of PPSP.

=C2= =A0

On th= e other hand, if the work is to enable more efficient streaming content distribtution within a controlled=C2=A0environment by leveraging mechanisms such as tracker management and chuck discovery, then the work is well understood, and can be clearly defined, specified and experimented in the n= ear future.

=C2= =A0

[Ning Zong] If I understand your question correctly, this is related to the incentives of PPSP work. The clarification of incentives are further provid= ed in problem statement. IMO, the second point in your comments is closer to=C2=A0current intention of PPSP. To be brief, the intention include (mayb= e not limited to): 1) enable more efficient streaming to integrate=C2=A03rd p= arty devices, e.g. cache/CDN nodes; 2)=C2=A0enable=C2=A0streaming vendors=C2=A0t= o accomplish=C2=A0content distribution via some standard API, thus reduce the=C2=A0time-to-market and maybe cost, we hope; 3) enable ISPs to construct=C2=A0standard streaming platform to run content provisioning services.

=C2= =A0

2 cen= ts,

=C2= =A0

- Pin= g

=C2=A0

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Lucy

=C2=A0

The participating entities in the first paragraph include both peers and trackers in P2P streaming systems. In second paragraph, we discuss the roles of=C2=A0trackers -=C2=A0assuming that people know the bas= ic meaning of peers.

Formal definitions of PPSP peers and PPSP trackers are defined in Problem Statement Draft.

=C2=A0

BR,

Ning Zong

=C2=A0

Hi YunFei and Christian,

=C2=A0

One clarification: =E2=80=9Cparticipating entities=E2=80=9D listed in the text = are the peer in P2P streaming systems, is that right? Thus, =E2=80=9CPPSP=E2=80=9D trackers are= another participator in the systems. =C2=A0Suggest stating that clearly in the firs= t paragraph.

=C2=A0

Cheers,

Lucy

=C2=A0

From: pp= sp-bounces@ietf.org [mailto:ppsp-bou= nces@ietf.org] On Behalf Of Schmidt, Christian 1. (NSN - DE/Munich)
Sent: Thursday, September 10, 2009 3:03 AM
To: ext zhangyunfei; ppsp@ietf.org
Subject: Re: [ppsp] ppsp charter discussion

=C2=A0

Hi Yunfei,

after reading your charter proposal, a text proposal and 2 questions for clarifications.

=C2=A0

Best Regards

Christian Schmidt

=C2=A0

=C2=A0

=C2=A0

Propo= sed new text=C2=A0for more transparency in main description:

Old t= ext:

The = Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, an= d/or other edge devices) to participate in P2P streaming systems in both fixed a= nd mobile Internet.


= PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling protocol between = =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer proto= col =E2=80=93 a signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains lists of parti= cipating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status informa= tion to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data.

=C2=A0

New= =C2=A0text:

The P= eer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols)=C2=A0for P2P streaming systems = in both fixed and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, and/or other edge devices.

=C2=A0

For a= specific channel or streaming file, a PPSP tracker maintains lists of particiating PPSP peers. = The PPSP tracker answers queries from PPSP peers for candidate PPSP peers. PPSP peers=C2=A0provide their status information to PPSP trackers, exchange thei= r chunk availability with other PPSP peers and/or PPSP trackers, and ask othe= r PPSP peers for wanted data. PPSP protocols include the PPSP tracker protoco= l =E2=80=93 a signaling protocol between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CP= PSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling protocol among =E2=80=9CPPSP peers=E2= =80=9D.

=C2=A0

Archi= tectural survey

3. An "archit= ectural survey" document explaining the current P2P streaming architectures, i= n particular tracker-based P2P streaming, and key issues in best practice.

It is= good to have a description of the current P2P streaming architecture. What is missing is t= he relation to the PPSP work. Will it contain a proposal for=C2=A0the PPSP architecture?

=C2=A0

Usage= document

6. A= =E2=80=9Cusage document=E2=80=9D explaining how the protocols defined above, along with existing IETF protoc= ols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems.

This = sounds more like a "interop document". Was this the intention?

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

=C2=A0

From: ppsp-bounces@ietf.org= [mailto:ppsp-bou= nces@ietf.org] On Behalf Of ext zhangyunfei
Sent: Thursday, September 10, 2009 8:24 AM
To: ppsp@ietf.org=
Subject: [ppsp] ppsp charter discussion

=C2=A0


Dear all,

=C2=A0=C2=A0 Th= e following is the modified version of PPSP charter(An early version was published in the IETF PPSP wiki page).Please review it and any comments and suggestions are highl= y appreciated.

=C2=A0

=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 BR

=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Yunfei

---------------= -----------------------------------------

The Peer-to-Peer (= P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or o= ther edge devices) to participate in P2P streaming systems in both fixed and mob= ile Internet.


PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling prot= ocol between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and the P= PSP peer protocol =E2=80=93 a signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains lists= of participating PPSP peers, each for a specific channel or streaming file, and answers the = queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other = PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data.

=C2=A0

This WG's primary tasks are to produce:
1. A =E2=80=9Cproblem statement=E2=80=9D document describing the problems, = incentives, and scope of developing the PPSP protocols, as well as common terminologies and concepts.

=C2=A0

2. A =E2=80=9Crequ= irements=E2=80=9D document listing the requirements on the designed PPSP protocols (e.g., general functionalit= y and performance requirements of PPSP protocols or basic types of informatio= n that PPSP protocols should communicate to facilitate P2P streaming).=


3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice.


4. A proposed standard defining the PPSP peer protocol. This protocol will define how PPSP peers advertise chunk availability. The protocol will also define the requests and responses of chunks among PPSP peers.

=C2=A0

5. A proposed standard defining the PPSP tracker protocol. This protocol will de= fine how PPSP peers inform and request information from PPSP trackers and how PP= SP trackers reply to the requests.

=C2=A0

6. A =E2=80=9Cusag= e document=E2=80=9D explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems.

=C2=A0

7. Optionally a = =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile BCP document) to evaluate PPSP with and with= out Mobile IP support when there are a lot of mobile peers in the system.


The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, an= d MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMUSI= C are needed, PPSP will seek to define such extensions and present to the respective working groups.


The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy issues that PPSP should address.

=C2=A0

The following topi= cs are excluded from this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. using = TCP or UDP, unicast or multicast, etc.


2. Network coding mechanisms in P2P streaming. Network coding may be used i= n P2P streaming, but its support is beyond the scope of current charter.

=C2=A0

3. Play-out mechan= isms including streaming control (e.g., pause, fast-forward, and rewind).

=C2=A0

4. Algorithms that= may be different in different deployments (e.g., chunk selection, local storage strategies).=

=C2=A0

5. Research type q= uestions related to P2P streaming. This WG will instead forward such questions to the IRTF P= 2PRG or other RG as appropriate. Examples include cache management.

Apr 2010<= /p>

Working Group La= st Call for problem statement

Jun 2010<= /p>

Submit problem s= tatement to IESG as Informational document

Aug 2010<= /p>

Working Group La= st Call for architecture survey

Aug 2010<= /p>

Working Group La= st Call for requirements

Oct

2010

Submit architect= ure survey to IESG as Informational document

Oct 2010<= /p>

Submit requireme= nts to IESG as Informational document

Apr 2011<= /p>

Working Group La= st Call for PPSP peer protocol

Apr

2011

Working Group La= st Call for PPSP tracker protocol

Aug 2011<= /p>

Submit PPSP peer= protocol to IESG as Proposed Standard

Aug 2011<= /p>

Submit PPSP trac= ker protocol to IESG as Proposed Standard

Nov 2011<= /p>

Working Group La= st Call of usage document

Nov 2011<= /p>

Working Group La= st Call of mobility BCP document

Jan 2012<= /p>

Submit usage doc= ument to IESG as Informational document

Jan 2012<= /p>

Submit mobility = BCP document to IESG as Informational document

Apr 2012<= /p>

Dissolve or re-c= harter

=C2=A0

=C2=A0

zhangyunfei

2009-09-10


_______________________________________________
ppsp mailing list
ppsp@ietf.org
ht= tps://www.ietf.org/mailman/listinfo/ppsp

=C2=A0

=C2=A0

=C2=A0

=C2=A0


--000e0cd32e1ebcee630473b32f74-- From ron.even.tlv@gmail.com Wed Sep 16 08:31:46 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 7034E3A68ED for ; Wed, 16 Sep 2009 08:31:46 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cqzUwCs0axIi for ; Wed, 16 Sep 2009 08:31:43 -0700 (PDT) Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.153]) by core3.amsl.com (Postfix) with ESMTP id A96DF3A6828 for ; Wed, 16 Sep 2009 08:31:42 -0700 (PDT) Received: by fg-out-1718.google.com with SMTP id e21so1063199fga.13 for ; Wed, 16 Sep 2009 08:32:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:cc:references :in-reply-to:subject:date:message-id:mime-version:content-type :x-mailer:thread-index:content-language; bh=n1yUwIUX81PsvII+pxL6DIAzRqfH9Amo30fTqinqRuY=; b=LgOCYCo6I6jZwQvF9cvu/8afLYlZbhkFj6BRWX/aEyzs7YrYG1fxVy0Lmzii2E+2Nz 4IWem3Hr35/8A13/IJ5eaJFyE2cD7dlYAroyQYETIRGn1blfOqwZ2S8VvXSzE/Wel+G4 16fg19aIHbbuRtu1gzQvyCxrqMQgLf5V2o8HM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:references:in-reply-to:subject:date:message-id :mime-version:content-type:x-mailer:thread-index:content-language; b=AQa1YUkkDJOmVjlHpTrKw7mK07IU3lETUidVdpdTFvsezrDbeJDbHlOoFX+ChAeHCT Ggdgv5g//SJT005+guJM5vcWnImrifsBZYHBpIHWSl4a8c7PJMJC2CRiFsxg9fwLp4ZQ bzbSSLIVcYMNRSubxpGjw+SRQFoZHj3taVgWE= Received: by 10.86.222.15 with SMTP id u15mr7526441fgg.33.1253115143552; Wed, 16 Sep 2009 08:32:23 -0700 (PDT) Received: from windows8d787f9 (bzq-79-183-9-115.red.bezeqint.net [79.183.9.115]) by mx.google.com with ESMTPS id l12sm134640fgb.7.2009.09.16.08.32.20 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 16 Sep 2009 08:32:22 -0700 (PDT) From: "Roni Even" To: "'Ping Pan'" References: <0KPR00LQ0UX6ED@szxml01-in.huawei.com> <22d04a930909101455v3df5ec7dq3241e6aa5e373f9b@mail.gmail.com> <22d04a930909101525i69a3cd78gf028040e0e2c5b9a@mail.gmail.com> <4ab0c69d.01135e0a.6ede.7383@mx.google.com> <22d04a930909160802h1f0ef7f1s296a1e8d9cae7df5@mail.gmail.com> In-Reply-To: <22d04a930909160802h1f0ef7f1s296a1e8d9cae7df5@mail.gmail.com> Date: Wed, 16 Sep 2009 18:30:33 +0300 Message-ID: <4ab10506.0c58560a.31a3.2c4e@mx.google.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0029_01CA36FB.C7BA7FA0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Aco23rWMyF5e4XGRTeeSGXtY6tyYWwAAib4g Content-Language: en-us Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Sep 2009 15:31:46 -0000 This is a multi-part message in MIME format. ------=_NextPart_000_0029_01CA36FB.C7BA7FA0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Ping, The idea is to address a topic that people feel should be addressed, in = the PPSP after looking at the full architecture the feeling was that the = first thing to address is the tracker and peers interoperability. The = result may be a protocol or an extension to an existing protocol which = at the IETF is the preference. So in the case of PPSP the focus is on finding the information about who = holds the content while I think that DECADE will address the caching = topic, I think the proposal is to define a P2P application-agnostic = in-network storage access protocol that will be used for caching. =20 For all this work once the problem statement and requirements are clear = a solution is needed which like I said may leverage existing protocols = if appropriate. Roni Even =20 =20 From: Ping Pan [mailto:ping@pingpan.org]=20 Sent: Wednesday, September 16, 2009 6:02 PM To: Roni Even Cc: Ning Zong; ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion =20 Roni, The DECADE BAR BOF had presented the the problem statement as: - How are P2P contents detected and stored in in-network storage? - How are P2P contents discovered and read from in-network storage? - What is the protocol to communicate with in-network storage? IMO, the work is best exemplified by the SAILOR proposal. If I am not = mistaken, DECADE is to deal with STORAGE using P2P as the underlying = transport mechanism. It's not clear to me though if DECADE is also going to introduce a = protocol that is similar to PPSP, or are they the same? If DECADE is = well defined and focused, what are we doing in PPSP? :-) Anyway, I am not objecting the PPSP work. Rather, if PPSP is to define = the protocol between P2P nodes and the interaction with the tracker = manager during streaming applications, and can be extended and addressed = in the area of content access control in the future, then say so and = focus on it in various drafts. Thanks! Ping On Wed, Sep 16, 2009 at 4:04 AM, Roni Even = wrote: Hi Ping, Maybe you should look at the DECADE work = https://www.ietf.org/mailman/listinfo/decade=20 There was a BAR BOF in Stockholm discussing caching solutions for P2P = applications. The scope of PPSP is to address the protocol from peers to tracker and = between peers in order to get the relevant chunks.=20 =20 Roni Even =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = Ping Pan Sent: Friday, September 11, 2009 1:26 AM To: Ning Zong Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion =20 Rich, =20 Thanks for the correction.=20 Ping Pan (408) 655-6547 On Thu, Sep 10, 2009 at 2:55 PM, Ping Pan wrote: Ning, =20 Thanks for the clarification. =20 Here is my main concern: currently, PPSP is positioned as yet another = streaming protocol to the end users. =20 IMHO, the end users can care less where the traffic are streaming from = so long it's convenient, safe and have reasonable QoE. Do we need = another streaming protocol to do this? =20 One may argue the advantages in P2P. But, to many, PPSP is actually = endorsing the following: * I need to install a special software from the ASP's, which may use my = local CPU and storage for P2P operation, and do some other things that I = don't know about. * The software enables me to watch some movies from the peers, who may = be chased by the lawyers from some media companies.=20 * On top of that, the service networks, especially, those who have to = pay for the expensive backhaul links, may be sick of the traffic volume, = and may install DPI boxes at every possible intersection to drop my = video stream traffic (here goes my QoE). In short, I don't think it's wise to address all of the above in one WG, = one architecture or one protocol. Rather, it would be nice to focus on = what P2P streaming is good at, use it to solve a couple of real = problems, and move on to the next. =20 We must not ignore the advancement of the following in P2P streaming: * Cost efficiency: I saw a presentation from last IETF's P2PRG (from = Rich Woundy?), where it takes a $3,000 PC to support 5,000 concurrent = streams. That's cheap! * Simplicity: it never occurred to me that why we must have storage = servers, called CDN, sitting all over the place, while some simple = caching would be sufficient. In PPlive's Sigcomm paper, it mentioned of = using 8/12G of Flash only, and no harddrive. (This may help answering = some copyright concerns). * Portability: people may argue uplink vs. inter-domain locality. But = all service providers need to do is inserting a few P2P edge caching = boxes in the network. If more locality is needed, add another one. Chunk = discovery and tracker manager are perfect for this. This is the line of reasoning I had: why not narrow the scope of PPSP, = and solve the caching problem first? =20 Once again, I don't think PPSP needs to deal with end users for now. In = fact, by forcing an open standard, you are taking away the leverage from = the existing P2P media companies, including PPlive and PPstream (as = mentioned in another draft of yours :-)). Nobody wins! =20 0.5 cents, =20 - Ping =20 2009/9/10 Ning Zong Hi, Ping, =20 End users will run PPSP. As addressed in charter, PPSP protocols could = run on multiple entities such as end users, caches, CDN nodes, etc. Here we talk about the standard protocols running on end users. What do = you mean by non-technical issues? If you mean security, privacy and = copyrights issues, I think not only PPSP, but some other BoF/WGs have = same issues. You are perfectly right, they will be not in the working = scope (but need some considerations during the WG work). =20 BR, Ning Zong=20 =20 _____ =20 Ning, =20 We are in agreement here. So, you have listed three objectives for PPSP: =20 1. Standard interface to CDN/Cache 2. Enable media providers to stream content through standard interfaces 3. Help the service providers to manage their network/links better. =20 So, curious, does it require the end users to run PPSP as well? The = problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) = seems to assume that is the case. (If I am not mistaken, all the = "proprietary protocols" listed in Section 3.1 are client P2P = applications). If yes, you have a wide scope of non-technical issues to = deal with. If no, then you need to make it clear in the documents. =20 Thanks for clarification. =20 Ping 2009/9/10 Ning Zong Hi, Ping, =20 Thank you for your comments, please see in-line. =20 _____ =20 Ning, =20 I'd think that it is very important to emphasis the target users of the = work, which has been quoted as "intelligent endpoints, caches, content = distribution network nodes, and/or other edge devices." =20 [Ning Zong] This is a good suggestion. =20 If possible, I would hope that further specification, clarification and = constraints to be added in one of the documents. =20 The reasoning is that, if the work is to enable further proliferation of = P2P clients within the networks, then the WG needs to address issues = including security, privacy and copyrights extensively. This may be = above and beyond technology, and is probably outside the scope of PPSP. =20 On the other hand, if the work is to enable more efficient streaming = content distribtution within a controlled environment by leveraging = mechanisms such as tracker management and chuck discovery, then the work = is well understood, and can be clearly defined, specified and = experimented in the near future. =20 [Ning Zong] If I understand your question correctly, this is related to = the incentives of PPSP work. The clarification of incentives are further = provided in problem statement. IMO, the second point in your comments is = closer to current intention of PPSP. To be brief, the intention include = (maybe not limited to): 1) enable more efficient streaming to integrate = 3rd party devices, e.g. cache/CDN nodes; 2) enable streaming vendors to = accomplish content distribution via some standard API, thus reduce the = time-to-market and maybe cost, we hope; 3) enable ISPs to construct = standard streaming platform to run content provisioning services. =20 2 cents, =20 - Ping =20 2009/9/10 Ning Zong Hi, Lucy =20 The participating entities in the first paragraph include both peers and = trackers in P2P streaming systems. In second paragraph, we discuss the = roles of trackers - assuming that people know the basic meaning of = peers. Formal definitions of PPSP peers and PPSP trackers are defined in = Problem Statement Draft. =20 BR, Ning Zong =20 _____ =20 Hi YunFei and Christian, =20 One clarification: =E2=80=9Cparticipating entities=E2=80=9D listed in = the text are the peer in P2P streaming systems, is that right? Thus, = =E2=80=9CPPSP=E2=80=9D trackers are another participator in the systems. = Suggest stating that clearly in the first paragraph. =20 Cheers, Lucy =20 _____ =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = Schmidt, Christian 1. (NSN - DE/Munich) Sent: Thursday, September 10, 2009 3:03 AM To: ext zhangyunfei; ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion =20 Hi Yunfei, after reading your charter proposal, a text proposal and 2 questions for = clarifications. =20 Best Regards Christian Schmidt =20 =20 =20 Proposed new text for more transparency in main description: Old text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is = chartered to develop standard signaling protocols (called PPSP = protocols) for multiple types of entities (e.g. intelligent endpoints, = caches, content distribution network nodes, and/or other edge devices) = to participate in P2P streaming systems in both fixed and mobile = Internet. PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling = protocol between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP = peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling = protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains = lists of participating PPSP peers, each for a specific channel or = streaming file, and answers the queries from PPSP peers for candidate = PPSP peers. PPSP peers inform their status information to PPSP trackers, = exchange their chunk availability with other PPSP peers and/or PPSP = trackers, and ask other PPSP peers for wanted data.=20 =20 New text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is = chartered to develop standard signaling protocols (called PPSP = protocols) for P2P streaming systems in both fixed and mobile Internet. = Participating entities could be intelligent endpoints, caches, content = distribution network nodes, and/or other edge devices. =20 For a specific channel or streaming file, a PPSP tracker maintains lists = of particiating PPSP peers. The PPSP tracker answers queries from PPSP = peers for candidate PPSP peers. PPSP peers provide their status = information to PPSP trackers, exchange their chunk availability with = other PPSP peers and/or PPSP trackers, and ask other PPSP peers for = wanted data. PPSP protocols include the PPSP tracker protocol =E2=80=93 = a signaling protocol between =E2=80=9CPPSP trackers=E2=80=9D and = =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a = signaling protocol among =E2=80=9CPPSP peers=E2=80=9D.=20 =20 Architectural survey 3. An "architectural survey" document explaining the current P2P = streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice. It is good to have a description of the current P2P streaming = architecture. What is missing is the relation to the PPSP work. Will it = contain a proposal for the PPSP architecture? =20 Usage document 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols = defined above, along with existing IETF protocols, such as RELAOD, ALTO = and RTSP, can inter-operate; and how they may be integrated together to = produce complete P2P streaming systems. This sounds more like a "interop document". Was this the intention? =20 =20 =20 =20 =20 =20 =20 =20 _____ =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = ext zhangyunfei Sent: Thursday, September 10, 2009 8:24 AM To: ppsp@ietf.org Subject: [ppsp] ppsp charter discussion =20 Dear all, The following is the modified version of PPSP charter(An early = version was published in the IETF PPSP wiki page).Please review it and = any comments and suggestions are highly appreciated. =20 BR Yunfei -------------------------------------------------------- Description of PPSP Working Group: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is = chartered to develop standard signaling protocols (called PPSP = protocols) for multiple types of entities (e.g. intelligent endpoints, = caches, content distribution network nodes, and/or other edge devices) = to participate in P2P streaming systems in both fixed and mobile = Internet. PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling = protocol between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP = peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling = protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains = lists of participating PPSP peers, each for a specific channel or = streaming file, and answers the queries from PPSP peers for candidate = PPSP peers. PPSP peers inform their status information to PPSP trackers, = exchange their chunk availability with other PPSP peers and/or PPSP = trackers, and ask other PPSP peers for wanted data.=20 =20 This WG's primary tasks are to produce: 1. A =E2=80=9Cproblem statement=E2=80=9D document describing the = problems, incentives, and scope of developing the PPSP protocols, as = well as common terminologies and concepts. =20 2. A =E2=80=9Crequirements=E2=80=9D document listing the requirements on = the designed PPSP protocols (e.g., general functionality and performance = requirements of PPSP protocols or basic types of information that PPSP = protocols should communicate to facilitate P2P streaming). 3. An "architectural survey" document explaining the current P2P = streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice. 4. A proposed standard defining the PPSP peer protocol. This protocol = will define how PPSP peers advertise chunk availability. The protocol = will also define the requests and responses of chunks among PPSP peers. =20 5. A proposed standard defining the PPSP tracker protocol. This protocol = will define how PPSP peers inform and request information from PPSP = trackers and how PPSP trackers reply to the requests. =20 6. A =E2=80=9Cusage document=E2=80=9D explaining how the protocols = defined above, along with existing IETF protocols, such as RELAOD, ALTO = and RTSP, can inter-operate; and how they may be integrated together to = produce complete P2P streaming systems. =20 7. Optionally a =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile BCP = document) to evaluate PPSP with and without Mobile IP support when there = are a lot of mobile peers in the system. The work planned for the PPSP WG is distinct from, but requires close = participation with, work in other IETF WGs, particularly P2PSIP, ALTO = and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, = ALTO, and MMUSIC behaviors. If PPSP determines that extensions to = P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define such = extensions and present to the respective working groups. The design of PPSP has to consider security/privacy issues. The protocol = document will contain a complete description of the security/privacy = issues that PPSP should address. =20 The following topics are excluded from this WG's scope: 1. Transport mechanisms for data transmission among PPSP peers, e.g. = using TCP or UDP, unicast or multicast, etc. 2. Network coding mechanisms in P2P streaming. Network coding may be = used in P2P streaming, but its support is beyond the scope of current = charter. =20 3. Play-out mechanisms including streaming control (e.g., pause, = fast-forward, and rewind). =20 4. Algorithms that may be different in different deployments (e.g., = chunk selection, local storage strategies). =20 5. Research type questions related to P2P streaming. This WG will = instead forward such questions to the IRTF P2PRG or other RG as = appropriate. Examples include cache management. Goals and Milestones: Apr 2010 Working Group Last Call for problem statement Jun 2010 Submit problem statement to IESG as Informational document Aug 2010 Working Group Last Call for architecture survey Aug 2010 Working Group Last Call for requirements Oct 2010 Submit architecture survey to IESG as Informational document Oct 2010 Submit requirements to IESG as Informational document Apr 2011 Working Group Last Call for PPSP peer protocol Apr 2011 Working Group Last Call for PPSP tracker protocol Aug 2011 Submit PPSP peer protocol to IESG as Proposed Standard Aug 2011 Submit PPSP tracker protocol to IESG as Proposed Standard Nov 2011 Working Group Last Call of usage document Nov 2011 Working Group Last Call of mobility BCP document Jan 2012 Submit usage document to IESG as Informational document Jan 2012 Submit mobility BCP document to IESG as Informational document Apr 2012 Dissolve or re-charter=20 =20 =20 _____ =20 zhangyunfei 2009-09-10 _____ =20 _______________________________________________ ppsp mailing list ppsp@ietf.org https://www.ietf.org/mailman/listinfo/ppsp =20 _____ =20 =20 _____ =20 =20 =20 =20 ------=_NextPart_000_0029_01CA36FB.C7BA7FA0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Ping,<= /o:p>

The idea is to address a topic that people feel should be addressed, in the = PPSP after looking at the full architecture the feeling was that the first = thing to address is the tracker and peers interoperability. The result may be a = protocol or an extension to an existing protocol which at the IETF is the = preference.

So in the case of PPSP the focus is on finding the information about who = holds the content while I think that DECADE will address the caching topic, I = think the proposal is to define a P2P application-agnostic in-network storage access = protocol that will be used for caching.

 =

For all this work once the problem statement and requirements are clear a = solution is needed which like I said may leverage existing protocols if = appropriate.

Roni Even

 

 

From:= Ping Pan [mailto:ping@pingpan.org]
Sent: Wednesday, September 16, 2009 6:02 PM
To: Roni Even
Cc: Ning Zong; ppsp@ietf.org
Subject: Re: [ppsp] ppsp charter discussion

 

Roni,

The DECADE BAR BOF had presented the the problem statement as:

- How are P2P contents detected and stored in in-network storage?
- How are P2P contents discovered and read from in-network storage?
- What is the protocol to communicate with in-network storage?

IMO, the work is best exemplified by the SAILOR proposal. If I am not = mistaken, DECADE is to deal with STORAGE using P2P as the underlying transport = mechanism.

It's not clear to me though if DECADE is also going to introduce a = protocol that is similar to PPSP, or are they the same? If DECADE is well defined = and focused, what are we doing in PPSP? :-)

Anyway, I am not objecting the PPSP work. Rather, if PPSP is to define = the protocol between P2P nodes and the interaction with the tracker manager = during streaming applications, and can be extended and addressed in the area of content access control in the future, then say so and focus on it in = various drafts.

Thanks!

Ping

On Wed, Sep 16, 2009 at 4:04 AM, Roni Even <ron.even.tlv@gmail.com> = wrote:

Hi = Ping,

Maybe you should look = at the DECADE work https://www.ietf.org/mailman/listinfo/decade =

There was a BAR BOF in Stockholm discussing caching solutions for P2P = applications.

The scope of PPSP is = to address the protocol from peers to tracker and between peers in order to get the relevant chunks.

 

Roni = Even

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Ping Pan
Sent: Friday, September 11, 2009 1:26 AM
To: Ning Zong
Cc: ppsp@ietf.org


Subject: Re: [ppsp] ppsp charter discussion

 

Rich,

 

Thanks for the correction. 

Ping Pan  (408) 655-6547

On Thu, Sep 10, 2009 at 2:55 PM, Ping Pan <ping@pingpan.org> wrote:

Ning,

 

Thanks for the clarification.

 

Here is my main concern: currently, PPSP is positioned as yet another streaming protocol to the end users.

 

IMHO, the end users can care less where the traffic are streaming = from so long it's convenient, safe and have reasonable QoE. Do we need another streaming protocol to do this?

 

One may argue the advantages in P2P. But, to many, PPSP is actually endorsing the following:

  • I need to install a special software from = the ASP's, which may use my local CPU and storage for P2P operation, = and do some other things that I don't know about.
  • The software enables me to watch some = movies from the peers, who may be chased by the lawyers from some media = companies. 
  • On top of that, the service networks, = especially, those who have to pay for the expensive backhaul links, may be sick = of the traffic volume, and may install DPI boxes at every possible = intersection to drop my video stream traffic (here goes my QoE).

In short, I don't think it's wise to address all of the above in one = WG, one architecture or one protocol. Rather, it would be nice to focus on what = P2P streaming is good at, use it to solve a couple of real problems, and = move on to the next.

 

We must not ignore the advancement of the following in P2P = streaming:

  • Cost efficiency: I saw a presentation from last IETF's P2PRG (from Rich = Woundy?), where it takes a $3,000 PC to support 5,000 concurrent streams. That's = cheap!
  • Simplicity: it never occurred to = me that why we must have storage servers, called CDN, sitting all over = the place, while some simple caching would be sufficient. In PPlive's = Sigcomm paper, it mentioned of using 8/12G of Flash only, and no harddrive. = (This may help answering some copyright concerns).
  • Portability: people may argue uplink vs. inter-domain locality. But all service providers need to do is inserting a few P2P edge caching boxes in the network. If more = locality is needed, add another one. Chunk discovery and tracker manager are = perfect for this.

This is the line of reasoning I had: why not narrow the scope of = PPSP, and solve the caching problem first?

 

Once again, I don't think PPSP needs to deal with end users for now. = In fact, by forcing an open standard, you are taking away the leverage from = the existing P2P media companies, including PPlive and PPstream (as = mentioned in another draft of yours :-)). Nobody wins!

 

0.5 cents,

 

- Ping

 

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

 

End users will run PPSP. As addressed in charter, PPSP protocols = could run on multiple entities such as end users, caches, CDN nodes, = etc.

Here we talk about the standard protocols running on end users. = What do you mean by non-technical issues? If you mean security, privacy and = copyrights issues, I think not only PPSP, but some other BoF/WGs have same = issues. You are perfectly right, they will be not in the working scope (but need = some considerations during the WG work).

 

BR,

Ning Zong 

 

Ning,

 

We are in agreement here. So, you have listed = three objectives for PPSP:

 

1. Standard interface to CDN/Cache

2. Enable media providers to stream content through standard = interfaces

3. Help the service providers to manage their network/links = better.

 

So, curious, does it require the end users to run PPSP as = well? The problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) = seems to assume that is the case. (If I am not mistaken, all the = "proprietary protocols" listed in Section 3.1 are client P2P applications). If = yes, you have a wide scope of non-technical issues to deal with. If no, then you = need to make it clear in the documents.

 

Thanks for clarification.

 

Ping

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

 

Thank you for your comments, please see in-line.

 

Ning,

 

I'd think that = it is very important to emphasis the target users of the work, which has been = quoted as "intelligent endpoints, caches, content distribution network nodes, = and/or other edge devices."

 

[Ning Zong] This = is a good suggestion.

 

If possible, I = would hope that further specification, clarification and constraints to be added in = one of the documents.

 

The reasoning is = that, if the work is to enable further proliferation of P2P clients = within the networks, then the WG needs to address issues including security, = privacy and copyrights extensively. This may be above and beyond technology, = and is probably outside the scope of PPSP.

 

On the other = hand, if the work is to enable more efficient streaming content distribtution within = a controlled environment by leveraging mechanisms such as tracker = management and chuck discovery, then the work is well understood, and can be = clearly defined, specified and experimented in the near = future.

 

[Ning Zong] If I understand your question correctly, this is related to the incentives of = PPSP work. The clarification of incentives are further provided in problem statement. IMO, the second point in your comments is closer = to current intention of PPSP. To be brief, the intention include (maybe not limited = to): 1) enable more efficient streaming to integrate 3rd party devices, = e.g. cache/CDN nodes; 2) enable streaming vendors to accomplish content distribution via some standard API, thus reduce = the time-to-market and maybe cost, we hope; 3) enable ISPs to construct standard = streaming platform to run content provisioning services.

 

2 = cents,

 

- = Ping

 

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Lucy

 

The participating entities in the first paragraph include both peers = and trackers in P2P streaming systems. In second paragraph, we discuss the = roles of trackers - assuming that people know the basic meaning of = peers.

Formal definitions of PPSP peers and PPSP trackers are defined in = Problem Statement Draft.

 

BR,

Ning Zong

 

Hi YunFei and = Christian,

 

One clarification: = =E2=80=9Cparticipating entities=E2=80=9D listed in the text are the peer in P2P streaming = systems, is that right? Thus, =E2=80=9CPPSP=E2=80=9D trackers are another participator in = the systems.  Suggest stating that clearly in the first = paragraph.

 

Cheers,

Lucy

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, Christian 1. (NSN - DE/Munich)
Sent: Thursday, September 10, 2009 3:03 AM
To: ext zhangyunfei; ppsp@ietf.org
Subject: Re: [ppsp] ppsp charter discussion

 

Hi = Yunfei,

after reading your = charter proposal, a text proposal and 2 questions for = clarifications.

 

Best = Regards

Christian = Schmidt

 

 

 

Proposed new text for more transparency in main = description:

Old = text:

The = Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop = standard signaling protocols (called PPSP protocols) for multiple types of = entities (e.g. intelligent endpoints, caches, content distribution network nodes, = and/or other edge devices) to participate in P2P streaming systems in both = fixed and mobile Internet.


PPSP = protocols include the PPSP tracker protocol =E2=80=93 a signaling protocol between = =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a = signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains lists of participating PPSP = peers, each for a specific channel or streaming file, and answers the queries from PPSP = peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or = PPSP trackers, and ask other PPSP peers for wanted data.

 

New text:

The Peer-to-Peer = (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop = standard signaling protocols (called PPSP protocols) for P2P streaming = systems in both fixed and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, and/or other edge devices.

 

For a specific = channel or streaming file, a PPSP tracker maintains lists of particiating PPSP = peers. The PPSP tracker answers queries from PPSP peers for candidate PPSP peers. = PPSP peers provide their status information to PPSP trackers, exchange = their chunk availability with other PPSP peers and/or PPSP trackers, and ask = other PPSP peers for wanted data. PPSP protocols include the PPSP tracker = protocol =E2=80=93 a signaling protocol between =E2=80=9CPPSP trackers=E2=80=9D and = =E2=80=9CPPSP peers=E2=80=9D, and the PPSP peer protocol =E2=80=93 a signaling protocol among =E2=80=9CPPSP = peers=E2=80=9D.

 

Architectural = survey

3. An "architectural survey" document explaining the current P2P streaming = architectures, in particular tracker-based P2P streaming, and key issues in best = practice.

It is good to = have a description of the current P2P streaming architecture. What is missing = is the relation to the PPSP work. Will it contain a proposal for the PPSP architecture?

 

Usage = document

6. A = =E2=80=9Cusage document=E2=80=9D explaining how the protocols defined above, along with existing IETF = protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming = systems.

This sounds more = like a "interop document". Was this the = intention?

 

 

 

 

 

 

 

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei
Sent: Thursday, September 10, 2009 8:24 AM
To: ppsp@ietf.org
Subject: [ppsp] ppsp charter discussion

 


Dear = all,

   The = following is the modified version of PPSP charter(An early version was published in the = IETF PPSP wiki page).Please review it and any comments and suggestions are = highly appreciated.

 

           BR

            Yunfei

--------------------------------------------------------=

Description of PPSP Working Group:

The Peer-to-Peer (P2P) = Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling = protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and = mobile Internet.


PPSP protocols include the PPSP tracker protocol =E2=80=93 a signaling = protocol between =E2=80=9CPPSP trackers=E2=80=9D and =E2=80=9CPPSP peers=E2=80=9D, and = the PPSP peer protocol =E2=80=93 a signaling protocol among =E2=80=9CPPSP peers=E2=80=9D. A PPSP tracker maintains = lists of participating PPSP peers, each for a specific channel or streaming file, and answers = the queries from PPSP peers for candidate PPSP peers. PPSP peers inform = their status information to PPSP trackers, exchange their chunk availability = with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for = wanted data.

 

This WG's primary tasks are = to produce:
1. A =E2=80=9Cproblem statement=E2=80=9D document describing the = problems, incentives, and scope of developing the PPSP protocols, as well as common terminologies = and concepts.

 

2. A = =E2=80=9Crequirements=E2=80=9D document listing the requirements on the designed PPSP protocols (e.g., general = functionality and performance requirements of PPSP protocols or basic types of = information that PPSP protocols should communicate to facilitate P2P = streaming).


3. An "architectural survey" document explaining the current = P2P streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice.


4. A proposed standard defining the PPSP peer protocol. This protocol = will define how PPSP peers advertise chunk availability. The protocol will = also define the requests and responses of chunks among PPSP = peers.

 

5. A proposed standard = defining the PPSP tracker protocol. This protocol will define how PPSP peers inform = and request information from PPSP trackers and how PPSP trackers reply to = the requests.

 

6. A =E2=80=9Cusage = document=E2=80=9D explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming = systems.

 

7. Optionally a = =E2=80=9Dmobile usage document=E2=80=9D (PPSP mobile BCP document) to evaluate PPSP with and = without Mobile IP support when there are a lot of mobile peers in the = system.


The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO = and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, = and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, = MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups.


The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy = issues that PPSP should address.

 

The following topics are = excluded from this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. = using TCP or UDP, unicast or multicast, etc.


2. Network coding mechanisms in P2P streaming. Network coding may be = used in P2P streaming, but its support is beyond the scope of current = charter.

 

3. Play-out mechanisms = including streaming control (e.g., pause, fast-forward, and = rewind).

 

4. Algorithms that may be = different in different deployments (e.g., chunk selection, local storage = strategies).

 

5. Research type questions = related to P2P streaming. This WG will instead forward such questions to the = IRTF P2PRG or other RG as appropriate. Examples include cache = management.

Goals = and Milestones:

Apr = 2010

Working Group Last Call = for problem statement

Jun = 2010

Submit problem statement = to IESG as Informational document

Aug = 2010

Working Group Last Call = for architecture survey

Aug = 2010

Working Group Last Call = for requirements

Oct

2010

Submit architecture = survey to IESG as Informational document

Oct = 2010

Submit requirements to = IESG as Informational document

Apr = 2011

Working Group Last Call = for PPSP peer protocol

Apr

2011

Working Group Last Call = for PPSP tracker protocol

Aug = 2011

Submit PPSP peer protocol = to IESG as Proposed Standard

Aug = 2011

Submit PPSP tracker = protocol to IESG as Proposed Standard

Nov = 2011

Working Group Last Call = of usage document

Nov = 2011

Working Group Last Call = of mobility BCP document

Jan = 2012

Submit usage document to = IESG as Informational document

Jan = 2012

Submit mobility BCP = document to IESG as Informational document

Apr = 2012

Dissolve or re-charter =

 

 

zhangyunfei

=

2009-09-10


_______________________________________________
ppsp mailing list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp

 

 

 

 

 

------=_NextPart_000_0029_01CA36FB.C7BA7FA0-- From zongning@huawei.com Wed Sep 16 18:00:21 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id A7BAC3A68B0 for ; Wed, 16 Sep 2009 18:00:21 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -97.827 X-Spam-Level: X-Spam-Status: No, score=-97.827 tagged_above=-999 required=5 tests=[AWL=3.287, BAYES_00=-2.599, HTML_FONT_FACE_BAD=0.884, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id YrNxpob-w+EQ for ; Wed, 16 Sep 2009 18:00:01 -0700 (PDT) Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [119.145.14.66]) by core3.amsl.com (Postfix) with ESMTP id CFB563A6407 for ; Wed, 16 Sep 2009 18:00:00 -0700 (PDT) Received: from huawei.com (szxga03-in [172.24.2.9]) by szxga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KQ300EX8C5C6C@szxga03-in.huawei.com> for ppsp@ietf.org; Thu, 17 Sep 2009 09:00:48 +0800 (CST) Received: from huawei.com ([172.24.1.24]) by szxga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KQ300LCVC5CME@szxga03-in.huawei.com> for ppsp@ietf.org; Thu, 17 Sep 2009 09:00:48 +0800 (CST) Received: from z63316 ([10.164.12.81]) by szxml04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KQ3006PQC58FE@szxml04-in.huawei.com> for ppsp@ietf.org; Thu, 17 Sep 2009 09:00:48 +0800 (CST) Date: Thu, 17 Sep 2009 09:00:44 +0800 From: Ning Zong In-reply-to: <22d04a930909160802h1f0ef7f1s296a1e8d9cae7df5@mail.gmail.com> To: 'Ping Pan' , 'Roni Even' Message-id: <002c01ca3732$4a206550$510ca40a@china.huawei.com> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Mailer: Microsoft Office Outlook 11 Content-type: multipart/alternative; boundary="Boundary_(ID_ipMByAqgM8GQiNuxhrokIw)" Thread-index: Aco23r1MEAD9dUecQV64v1iSz6qyJAAUGaSg Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Sep 2009 01:00:21 -0000 This is a multi-part message in MIME format. --Boundary_(ID_ipMByAqgM8GQiNuxhrokIw) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Hi, Ping, I don't think DECADE will use P2P as the underlying transport mechanism. (Actually could you explain more about why P2P would be regarded as transport mechanism? Because to my knowledge, P2P itself has not been used for transport yet. Currently, P2P is just capability or architecture for organizing the nodes.) Although the main motivation of DECADE is to solve some P2P problems (see DECADE p.s.). A DECADE client will rely on a P2P or non-P2P mechanism to locate where the data is. This step could be PPSP/Reload or whatever, which is independent of DECADE protocols. The DECADE protocols will then be applied between DECADE client and DECADE server (a.k.a. in-network storage) to transfer data to the DECADE client, or control the data transfer (e.g. auth / resource control, etc). So the position of PPSP is more close to resource discovery, while DECADE focuses on data transmission. Maybe I didn't answer your questions? Comments are welcome then. BR, Ning Zong _____ From: Ping Pan [mailto:ping@pingpan.org] Sent: Wednesday, September 16, 2009 11:02 PM To: Roni Even Cc: Ning Zong; ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion Roni, The DECADE BAR BOF had presented the the problem statement as: - How are P2P contents detected and stored in in-network storage? - How are P2P contents discovered and read from in-network storage? - What is the protocol to communicate with in-network storage? IMO, the work is best exemplified by the SAILOR proposal. If I am not mistaken, DECADE is to deal with STORAGE using P2P as the underlying transport mechanism. It's not clear to me though if DECADE is also going to introduce a protocol that is similar to PPSP, or are they the same? If DECADE is well defined and focused, what are we doing in PPSP? :-) Anyway, I am not objecting the PPSP work. Rather, if PPSP is to define the protocol between P2P nodes and the interaction with the tracker manager during streaming applications, and can be extended and addressed in the area of content access control in the future, then say so and focus on it in various drafts. Thanks! Ping On Wed, Sep 16, 2009 at 4:04 AM, Roni Even wrote: Hi Ping, Maybe you should look at the DECADE work https://www.ietf.org/mailman/listinfo/decade There was a BAR BOF in Stockholm discussing caching solutions for P2P applications. The scope of PPSP is to address the protocol from peers to tracker and between peers in order to get the relevant chunks. Roni Even From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Ping Pan Sent: Friday, September 11, 2009 1:26 AM To: Ning Zong Cc: ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion Rich, Thanks for the correction. Ping Pan (408) 655-6547 On Thu, Sep 10, 2009 at 2:55 PM, Ping Pan wrote: Ning, Thanks for the clarification. Here is my main concern: currently, PPSP is positioned as yet another streaming protocol to the end users. IMHO, the end users can care less where the traffic are streaming from so long it's convenient, safe and have reasonable QoE. Do we need another streaming protocol to do this? One may argue the advantages in P2P. But, to many, PPSP is actually endorsing the following: * I need to install a special software from the ASP's, which may use my local CPU and storage for P2P operation, and do some other things that I don't know about. * The software enables me to watch some movies from the peers, who may be chased by the lawyers from some media companies. * On top of that, the service networks, especially, those who have to pay for the expensive backhaul links, may be sick of the traffic volume, and may install DPI boxes at every possible intersection to drop my video stream traffic (here goes my QoE). In short, I don't think it's wise to address all of the above in one WG, one architecture or one protocol. Rather, it would be nice to focus on what P2P streaming is good at, use it to solve a couple of real problems, and move on to the next. We must not ignore the advancement of the following in P2P streaming: * Cost efficiency: I saw a presentation from last IETF's P2PRG (from Rich Woundy?), where it takes a $3,000 PC to support 5,000 concurrent streams. That's cheap! * Simplicity: it never occurred to me that why we must have storage servers, called CDN, sitting all over the place, while some simple caching would be sufficient. In PPlive's Sigcomm paper, it mentioned of using 8/12G of Flash only, and no harddrive. (This may help answering some copyright concerns). * Portability: people may argue uplink vs. inter-domain locality. But all service providers need to do is inserting a few P2P edge caching boxes in the network. If more locality is needed, add another one. Chunk discovery and tracker manager are perfect for this. This is the line of reasoning I had: why not narrow the scope of PPSP, and solve the caching problem first? Once again, I don't think PPSP needs to deal with end users for now. In fact, by forcing an open standard, you are taking away the leverage from the existing P2P media companies, including PPlive and PPstream (as mentioned in another draft of yours :-)). Nobody wins! 0.5 cents, - Ping 2009/9/10 Ning Zong Hi, Ping, End users will run PPSP. As addressed in charter, PPSP protocols could run on multiple entities such as end users, caches, CDN nodes, etc. Here we talk about the standard protocols running on end users. What do you mean by non-technical issues? If you mean security, privacy and copyrights issues, I think not only PPSP, but some other BoF/WGs have same issues. You are perfectly right, they will be not in the working scope (but need some considerations during the WG work). BR, Ning Zong _____ Ning, We are in agreement here. So, you have listed three objectives for PPSP: 1. Standard interface to CDN/Cache 2. Enable media providers to stream content through standard interfaces 3. Help the service providers to manage their network/links better. So, curious, does it require the end users to run PPSP as well? The problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems to assume that is the case. (If I am not mistaken, all the "proprietary protocols" listed in Section 3.1 are client P2P applications). If yes, you have a wide scope of non-technical issues to deal with. If no, then you need to make it clear in the documents. Thanks for clarification. Ping 2009/9/10 Ning Zong Hi, Ping, Thank you for your comments, please see in-line. _____ Ning, I'd think that it is very important to emphasis the target users of the work, which has been quoted as "intelligent endpoints, caches, content distribution network nodes, and/or other edge devices." [Ning Zong] This is a good suggestion. If possible, I would hope that further specification, clarification and constraints to be added in one of the documents. The reasoning is that, if the work is to enable further proliferation of P2P clients within the networks, then the WG needs to address issues including security, privacy and copyrights extensively. This may be above and beyond technology, and is probably outside the scope of PPSP. On the other hand, if the work is to enable more efficient streaming content distribtution within a controlled environment by leveraging mechanisms such as tracker management and chuck discovery, then the work is well understood, and can be clearly defined, specified and experimented in the near future. [Ning Zong] If I understand your question correctly, this is related to the incentives of PPSP work. The clarification of incentives are further provided in problem statement. IMO, the second point in your comments is closer to current intention of PPSP. To be brief, the intention include (maybe not limited to): 1) enable more efficient streaming to integrate 3rd party devices, e.g. cache/CDN nodes; 2) enable streaming vendors to accomplish content distribution via some standard API, thus reduce the time-to-market and maybe cost, we hope; 3) enable ISPs to construct standard streaming platform to run content provisioning services. 2 cents, - Ping 2009/9/10 Ning Zong Hi, Lucy The participating entities in the first paragraph include both peers and trackers in P2P streaming systems. In second paragraph, we discuss the roles of trackers - assuming that people know the basic meaning of peers. Formal definitions of PPSP peers and PPSP trackers are defined in Problem Statement Draft. BR, Ning Zong _____ Hi YunFei and Christian, One clarification: "participating entities" listed in the text are the peer in P2P streaming systems, is that right? Thus, "PPSP" trackers are another participator in the systems. Suggest stating that clearly in the first paragraph. Cheers, Lucy _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, Christian 1. (NSN - DE/Munich) Sent: Thursday, September 10, 2009 3:03 AM To: ext zhangyunfei; ppsp@ietf.org Subject: Re: [ppsp] ppsp charter discussion Hi Yunfei, after reading your charter proposal, a text proposal and 2 questions for clarifications. Best Regards Christian Schmidt Proposed new text for more transparency in main description: Old text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. New text: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for P2P streaming systems in both fixed and mobile Internet. Participating entities could be intelligent endpoints, caches, content distribution network nodes, and/or other edge devices. For a specific channel or streaming file, a PPSP tracker maintains lists of particiating PPSP peers. The PPSP tracker answers queries from PPSP peers for candidate PPSP peers. PPSP peers provide their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". Architectural survey 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. It is good to have a description of the current P2P streaming architecture. What is missing is the relation to the PPSP work. Will it contain a proposal for the PPSP architecture? Usage document 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. This sounds more like a "interop document". Was this the intention? _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext zhangyunfei Sent: Thursday, September 10, 2009 8:24 AM To: ppsp@ietf.org Subject: [ppsp] ppsp charter discussion Dear all, The following is the modified version of PPSP charter(An early version was published in the IETF PPSP wiki page).Please review it and any comments and suggestions are highly appreciated. BR Yunfei -------------------------------------------------------- Description of PPSP Working Group: The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types of entities (e.g. intelligent endpoints, caches, content distribution network nodes, and/or other edge devices) to participate in P2P streaming systems in both fixed and mobile Internet. PPSP protocols include the PPSP tracker protocol - a signaling protocol between "PPSP trackers" and "PPSP peers", and the PPSP peer protocol - a signaling protocol among "PPSP peers". A PPSP tracker maintains lists of participating PPSP peers, each for a specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or PPSP trackers, and ask other PPSP peers for wanted data. This WG's primary tasks are to produce: 1. A "problem statement" document describing the problems, incentives, and scope of developing the PPSP protocols, as well as common terminologies and concepts. 2. A "requirements" document listing the requirements on the designed PPSP protocols (e.g., general functionality and performance requirements of PPSP protocols or basic types of information that PPSP protocols should communicate to facilitate P2P streaming). 3. An "architectural survey" document explaining the current P2P streaming architectures, in particular tracker-based P2P streaming, and key issues in best practice. 4. A proposed standard defining the PPSP peer protocol. This protocol will define how PPSP peers advertise chunk availability. The protocol will also define the requests and responses of chunks among PPSP peers. 5. A proposed standard defining the PPSP tracker protocol. This protocol will define how PPSP peers inform and request information from PPSP trackers and how PPSP trackers reply to the requests. 6. A "usage document" explaining how the protocols defined above, along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated together to produce complete P2P streaming systems. 7. Optionally a "mobile usage document" (PPSP mobile BCP document) to evaluate PPSP with and without Mobile IP support when there are a lot of mobile peers in the system. The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups. The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy issues that PPSP should address. The following topics are excluded from this WG's scope: 1. Transport mechanisms for data transmission among PPSP peers, e.g. using TCP or UDP, unicast or multicast, etc. 2. Network coding mechanisms in P2P streaming. Network coding may be used in P2P streaming, but its support is beyond the scope of current charter. 3. Play-out mechanisms including streaming control (e.g., pause, fast-forward, and rewind). 4. Algorithms that may be different in different deployments (e.g., chunk selection, local storage strategies). 5. Research type questions related to P2P streaming. This WG will instead forward such questions to the IRTF P2PRG or other RG as appropriate. Examples include cache management. Goals and Milestones: Apr 2010 Working Group Last Call for problem statement Jun 2010 Submit problem statement to IESG as Informational document Aug 2010 Working Group Last Call for architecture survey Aug 2010 Working Group Last Call for requirements Oct 2010 Submit architecture survey to IESG as Informational document Oct 2010 Submit requirements to IESG as Informational document Apr 2011 Working Group Last Call for PPSP peer protocol Apr 2011 Working Group Last Call for PPSP tracker protocol Aug 2011 Submit PPSP peer protocol to IESG as Proposed Standard Aug 2011 Submit PPSP tracker protocol to IESG as Proposed Standard Nov 2011 Working Group Last Call of usage document Nov 2011 Working Group Last Call of mobility BCP document Jan 2012 Submit usage document to IESG as Informational document Jan 2012 Submit mobility BCP document to IESG as Informational document Apr 2012 Dissolve or re-charter _____ zhangyunfei 2009-09-10 _____ _______________________________________________ ppsp mailing list ppsp@ietf.org https://www.ietf.org/mailman/listinfo/ppsp _____ _____ --Boundary_(ID_ipMByAqgM8GQiNuxhrokIw) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

Hi, = Ping,

 <= /span>

I don’t = think DECADE will use P2P as the underlying transport mechanism. (Actually could you = explain more about why P2P would be regarded as transport mechanism? Because to = my knowledge, P2P itself has not been used for transport yet. Currently, = P2P is just capability or architecture for organizing the = nodes.)

 <= /span>

Although the main = motivation of DECADE is to solve some P2P problems (see DECADE p.s.). A DECADE = client will rely on a P2P or non-P2P mechanism to locate where the data is. This = step could be PPSP/Reload or whatever, which is independent of DECADE protocols. = The DECADE protocols will then be applied between DECADE client and DECADE = server (a.k.a. in-network storage) to transfer data to the DECADE client, or control = the data transfer (e.g. auth / resource control, etc).

 <= /span>

So the position = of PPSP is more close to resource discovery, while DECADE focuses on data = transmission.

 <= /span>

Maybe I = didn’t answer your questions? Comments are welcome = then.

 <= /span>

BR,

Ning = Zong

 <= /span>

From: Ping Pan [mailto:ping@pingpan.org]
Sent: Wednesday, = September 16, 2009 11:02 PM
To: Roni Even
Cc: Ning Zong; = ppsp@ietf.org
Subject: Re: [ppsp] ppsp = charter discussion

 

Roni,

The DECADE BAR BOF had presented the the problem statement as:

- How are P2P contents detected and stored in in-network storage?
- How are P2P contents discovered and read from in-network storage?
- What is the protocol to communicate with in-network storage?

IMO, the work is best exemplified by the SAILOR proposal. If I am not = mistaken, DECADE is to deal with STORAGE using P2P as the underlying transport = mechanism.

It's not clear to me though if DECADE is also going to introduce a = protocol that is similar to PPSP, or are they the same? If DECADE is well defined = and focused, what are we doing in PPSP? :-)

Anyway, I am not objecting the PPSP work. Rather, if PPSP is to define = the protocol between P2P nodes and the interaction with the tracker manager = during streaming applications, and can be extended and addressed in the area of content access control in the future, then say so and focus on it in = various drafts.

Thanks!

Ping

On Wed, Sep 16, 2009 at 4:04 AM, Roni Even = <ron.even.tlv@gmail.com> = wrote:

Hi Ping,

Maybe you should look at the = DECADE work https://www.ietf.org/mailman/listinfo/decade

There was a BAR BOF in = Stockholm discussing caching = solutions for P2P applications.

The scope of PPSP is to address = the protocol from peers to tracker and between peers in order to get the = relevant chunks.

 

Roni Even

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Ping Pan
Sent: Friday, September = 11, 2009 1:26 AM
To: Ning Zong
Cc: ppsp@ietf.org


Subject: Re: [ppsp] ppsp = charter discussion

 

Rich,

 

Thanks for the = correction. 

Ping Pan  (408) 655-6547

On Thu, Sep 10, 2009 at 2:55 PM, Ping Pan <ping@pingpan.org> = wrote:

Ning,

 

Thanks for the clarification.

 

Here is my main concern: currently, PPSP is positioned as yet another = streaming protocol to the end users.

 

IMHO, the end users can care less where the traffic are streaming from so long it's convenient, safe and have reasonable QoE. Do we need = another streaming protocol to do this?

 

One may argue the advantages in P2P. But, to many, PPSP is actually = endorsing the following:

  • I need to install a special = software from the ASP's, which may use my local CPU and storage for P2P = operation, and do some other things that I don't know = about.
  • The software enables me to = watch some movies from the peers, who may be chased by the lawyers from some = media companies. 
  • On top of that, the service = networks, especially, those who have to pay for the expensive backhaul links, = may be sick of the traffic volume, and may install DPI boxes at every = possible intersection to drop my video stream traffic (here goes my = QoE).

In short, I don't think it's wise to address all of the above in one WG, = one architecture or one protocol. Rather, it would be nice to focus on what = P2P streaming is good at, use it to solve a couple of real problems, and = move on to the next.

 

We must not ignore the advancement of the following in P2P = streaming:

  • Cost efficiency: I saw a presentation from last IETF's P2PRG (from Rich = Woundy?), where it takes a $3,000 PC to support 5,000 concurrent streams. That's = cheap!
  • Simplicity: it never occurred to me that why we must have storage = servers, called CDN, sitting all over the place, while some simple caching = would be sufficient. In PPlive's Sigcomm paper, it mentioned of using = 8/12G of Flash only, and no = harddrive. (This may help answering some copyright = concerns).
  • Portability: people may = argue uplink vs. inter-domain locality. But all service providers need to = do is inserting a few P2P edge caching boxes in the network. If more = locality is needed, add another one. Chunk discovery and tracker manager are = perfect for this.

This is the line of reasoning I had: why not narrow the scope of PPSP, and = solve the caching problem first?

 

Once again, I don't think PPSP needs to deal with end users for now. In fact, = by forcing an open standard, you are taking away the leverage from the = existing P2P media companies, including PPlive and PPstream (as mentioned in = another draft of yours :-)). Nobody wins!

 

0.5 cents,

 

- Ping

 

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

 

End users will run PPSP. As addressed in charter, PPSP protocols could run = on multiple entities such as end users, caches, CDN nodes, = etc.

Here we talk about the standard protocols running on end users. What do = you mean by non-technical issues? If you mean security, privacy and = copyrights issues, I think not only PPSP, but some other BoF/WGs have same = issues. You are perfectly right, they will be not in the working scope (but need = some considerations during the WG work).

 

BR,

Ning Zong 

 

Ning,

 

We are in agreement here. So, you have listed = three objectives for PPSP:

 

1. Standard interface to CDN/Cache

2. Enable media providers to stream content through standard = interfaces

3. Help the service providers to manage their network/links = better.

 

So, curious, does it require the end users to run PPSP as well? The = problem statement draft (draft-zhang-ppsp-problem-statement-04.txt) seems to = assume that is the case. (If I am not mistaken, all the "proprietary protocols" listed in Section 3.1 are client P2P applications). If = yes, you have a wide scope of non-technical issues to deal with. If no, then you = need to make it clear in the documents.

 

Thanks for clarification.

 

Ping

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Ping,

 

Thank you for your comments, please see in-line.

 

Ning,

 

I'd = think that it is very important to emphasis the target users of the work, which has = been quoted as "intelligent endpoints, caches, content distribution = network nodes, and/or other edge devices."

 

[Ning = Zong] This is a good suggestion.

 

If = possible, I would hope that further specification, clarification and constraints to = be added in one of the documents.

 

The = reasoning is that, if the work is to enable further proliferation of P2P = clients within the networks, then the WG needs to address issues including = security, privacy and copyrights extensively. This may be above and beyond = technology, and is probably outside the scope of PPSP.

 

On the = other hand, if the work is to enable more efficient streaming content = distribtution within a controlled environment by leveraging mechanisms such as = tracker management and chuck discovery, then the work is well understood, and = can be clearly defined, specified and experimented in the near = future.

 

[Ning = Zong] If I understand your question correctly, this is related to the incentives of = PPSP work. The clarification of incentives are further provided in problem statement. IMO, the second point in your comments is closer = to current intention of PPSP. To be brief, the intention include (maybe not limited = to): 1) enable more efficient streaming to integrate 3rd party devices, = e.g. cache/CDN nodes; 2) enable streaming vendors to accomplish content distribution via some standard API, thus reduce the time-to-market and maybe cost, we hope; 3) enable ISPs to construct standard streaming platform to run content provisioning services.

 

2 = cents,

 

- = Ping

 

2009/9/10 Ning Zong <zongning@huawei.com>

Hi, Lucy

 

The participating entities in the first paragraph include both peers and = trackers in P2P streaming systems. In second paragraph, we discuss the roles of trackers - assuming that people know the basic meaning of = peers.

Formal definitions of PPSP peers and PPSP trackers are defined in Problem = Statement Draft.

 

BR,

Ning Zong

 

Hi YunFei and = Christian,

 

One clarification: = “participating entities” listed in the text are the peer in P2P streaming = systems, is that right? Thus, “PPSP” trackers are another participator = in the systems.  Suggest stating that clearly in the first = paragraph.

 

Cheers,

Lucy

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Schmidt, = Christian 1. (NSN - DE/Munich)
Sent: Thursday, September = 10, 2009 3:03 AM
To: ext zhangyunfei; ppsp@ietf.org
Subject: Re: [ppsp] ppsp = charter discussion

 

Hi Yunfei,

after reading your charter = proposal, a text proposal and 2 questions for clarifications.

 

Best Regards

Christian = Schmidt

 

 

 

Proposed = new text for more transparency in main description:

Old = text:

The = Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for multiple types = of entities (e.g. intelligent endpoints, caches, content distribution = network nodes, and/or other edge devices) to participate in P2P streaming = systems in both fixed and mobile Internet.


PPSP protocols include = the PPSP tracker protocol – a signaling protocol between “PPSP trackers” and “PPSP peers”, and the PPSP peer protocol – a signaling protocol among “PPSP peers”. A PPSP = tracker maintains lists of participating PPSP peers, each for a specific channel = or streaming file, and answers the queries from PPSP peers for candidate = PPSP peers. PPSP peers inform their status information to PPSP trackers, = exchange their chunk availability with other PPSP peers and/or PPSP trackers, and = ask other PPSP peers for wanted data.

 

New text:

The = Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is chartered to develop standard signaling protocols (called PPSP protocols) for P2P = streaming systems in both fixed and mobile Internet. Participating entities could = be intelligent endpoints, caches, content distribution network nodes, = and/or other edge devices.

 

For a = specific channel or streaming file, a PPSP tracker maintains lists of = particiating PPSP peers. The PPSP tracker answers queries from PPSP peers for candidate = PPSP peers. PPSP peers provide their status information to PPSP = trackers, exchange their chunk availability with other PPSP peers and/or PPSP = trackers, and ask other PPSP peers for wanted data. PPSP protocols include the = PPSP tracker protocol – a signaling protocol between “PPSP trackers” and “PPSP peers”, and the PPSP peer protocol – a signaling protocol among “PPSP = peers”.

 

Architectural survey

3. An "architectural survey" = document explaining the current P2P streaming architectures, in particular = tracker-based P2P streaming, and key issues in best practice.

It is = good to have a description of the current P2P streaming architecture. What is = missing is the relation to the PPSP work. Will it contain a proposal = for the PPSP architecture?

 

Usage = document

6. A “usage document” explaining how the protocols defined above, = along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can = inter-operate; and how they may be integrated together to produce complete P2P = streaming systems.

This = sounds more like a "interop document". Was this the = intention?

 

 

 

 

 

 

 

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of ext = zhangyunfei
Sent: Thursday, September = 10, 2009 8:24 AM
To: ppsp@ietf.org
Subject: [ppsp] ppsp = charter discussion

 


Dear = all,

   The following = is the modified version of PPSP charter(An early version was published in the = IETF PPSP wiki page).Please review it and any comments and suggestions are = highly appreciated.

 

        &n= bsp;  BR

        &n= bsp;   Yunfei

--------------------------------------------------= ------

Description of PPSP Working = Group:

The Peer-to-Peer (P2P) Streaming Protocol = working group (PPSP WG) is chartered to develop standard signaling protocols = (called PPSP protocols) for multiple types of entities (e.g. intelligent = endpoints, caches, content distribution network nodes, and/or other edge devices) = to participate in P2P streaming systems in both fixed and mobile = Internet.


PPSP protocols include the PPSP tracker protocol – a signaling = protocol between “PPSP trackers” and “PPSP peers”, and = the PPSP peer protocol – a signaling protocol among “PPSP = peers”. A PPSP tracker maintains lists of participating PPSP peers, each for a = specific channel or streaming file, and answers the queries from PPSP peers for candidate PPSP peers. PPSP peers inform their status information to PPSP trackers, exchange their chunk availability with other PPSP peers and/or = PPSP trackers, and ask other PPSP peers for wanted data.

 

This WG's primary tasks are to produce:
1. A “problem statement” document describing the problems, incentives, and scope of developing the PPSP protocols, as well as = common terminologies and concepts.

 

2. A “requirements” document = listing the requirements on the designed PPSP protocols (e.g., general functionality = and performance requirements of PPSP protocols or basic types of information = that PPSP protocols should communicate to facilitate P2P = streaming).


3. An "architectural survey" document explaining the current = P2P streaming architectures, in particular tracker-based P2P streaming, and = key issues in best practice.


4. A proposed standard defining the PPSP peer protocol. This protocol = will define how PPSP peers advertise chunk availability. The protocol will = also define the requests and responses of chunks among PPSP = peers.

 

5. A proposed standard defining the PPSP = tracker protocol. This protocol will define how PPSP peers inform and request information from PPSP trackers and how PPSP trackers reply to the = requests.

 

6. A “usage document” explaining = how the protocols defined above, along with existing IETF protocols, such as = RELAOD, ALTO and RTSP, can inter-operate; and how they may be integrated = together to produce complete P2P streaming systems.

 

7. Optionally a ”mobile usage = document” (PPSP mobile BCP document) to evaluate PPSP with and without Mobile IP = support when there are a lot of mobile peers in the system.


The work planned for the PPSP WG is distinct from, but requires close participation with, work in other IETF WGs, particularly P2PSIP, ALTO = and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, = and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, = MMUSIC are needed, PPSP will seek to define such extensions and present to the respective working groups.


The design of PPSP has to consider security/privacy issues. The protocol document will contain a complete description of the security/privacy = issues that PPSP should address.

 

The following topics are excluded from this = WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. = using TCP or UDP, unicast or multicast, etc.


2. Network coding mechanisms in P2P streaming. Network coding may be = used in P2P streaming, but its support is beyond the scope of current = charter.

 

3. Play-out mechanisms including streaming = control (e.g., pause, fast-forward, and rewind).

 

4. Algorithms that may be different in = different deployments (e.g., chunk selection, local storage = strategies).

 

5. Research type questions related to P2P = streaming. This WG will instead forward such questions to the IRTF P2PRG or other = RG as appropriate. Examples include cache management.

Goals and = Milestones:

Apr 2010

Working Group Last Call for problem = statement

Jun 2010

Submit problem statement to IESG as = Informational document

Aug 2010

Working Group Last Call for architecture = survey

Aug 2010

Working Group Last Call for = requirements

Oct

2010

Submit architecture survey to IESG as Informational document

Oct 2010

Submit requirements to IESG as = Informational document

Apr 2011

Working Group Last Call for PPSP peer = protocol

Apr

2011

Working Group Last Call for PPSP tracker = protocol

Aug 2011

Submit PPSP peer protocol to IESG as = Proposed Standard

Aug 2011

Submit PPSP tracker protocol to IESG as = Proposed Standard

Nov 2011

Working Group Last Call of usage = document

Nov 2011

Working Group Last Call of mobility BCP = document

Jan 2012

Submit usage document to IESG as = Informational document

Jan 2012

Submit mobility BCP document to IESG as Informational document

Apr 2012

Dissolve or re-charter

 

 

zhangyunfei

2009-09-10


_______________________________________________
ppsp mailing list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp

 

 

 

 

 

--Boundary_(ID_ipMByAqgM8GQiNuxhrokIw)-- From lars.eggert@nokia.com Mon Sep 28 06:33:14 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id CE6E73A6946; Mon, 28 Sep 2009 06:33:14 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.599 X-Spam-Level: X-Spam-Status: No, score=-2.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hgjMvqULaetf; Mon, 28 Sep 2009 06:33:14 -0700 (PDT) Received: from mail.fit.nokia.com (mail.fit.nokia.com [195.148.124.195]) by core3.amsl.com (Postfix) with ESMTP id B39163A6899; Mon, 28 Sep 2009 06:33:13 -0700 (PDT) Received: from pc-a80034.wlan.inet.fi (pc-a80034.wlan.inet.fi [194.111.80.34]) (authenticated bits=0) by mail.fit.nokia.com (8.14.3/8.14.3) with ESMTP id n8SDYHWu063480 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT); Mon, 28 Sep 2009 16:34:18 +0300 (EEST) (envelope-from lars.eggert@nokia.com) From: Lars Eggert Content-Type: multipart/signed; boundary=Apple-Mail-6-954839149; protocol="application/pkcs7-signature"; micalg=sha1 Date: Mon, 28 Sep 2009 15:12:25 +0300 To: ppsp@ietf.org Message-Id: Mime-Version: 1.0 (Apple Message framework v1076) X-Mailer: Apple Mail (2.1076) X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.3 (mail.fit.nokia.com [195.148.124.194]); Mon, 28 Sep 2009 16:34:18 +0300 (EEST) Subject: [ppsp] PPSP BOF approved X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Sep 2009 13:33:14 -0000 --Apple-Mail-6-954839149 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes Hi, I just wanted to drop you all a quick note that after the IAB/IESG BOF call last Friday, we've approved the PPSP BOF for the next IETF in Hiroshima. I'll work with the proponents on detailing the BOF agenda and assigning some BOF chairs. Lars PS: Secretariat (BCC'ed), please allocate an agenda slot for the PPSP BOF. --Apple-Mail-6-954839149 Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIGbDCCAyUw ggKOoAMCAQICEAdjk36sXKbnVn15S0/qUp0wDQYJKoZIhvcNAQEFBQAwYjELMAkGA1UEBhMCWkEx JTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQ ZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA5MDYxNTExMjYxNFoXDTEwMDYxNTExMjYx NFowXDEPMA0GA1UEBBMGRWdnZXJ0MQ0wCwYDVQQqEwRMYXJzMRQwEgYDVQQDEwtMYXJzIEVnZ2Vy dDEkMCIGCSqGSIb3DQEJARYVbGFycy5lZ2dlcnRAbm9raWEuY29tMIIBIjANBgkqhkiG9w0BAQEF AAOCAQ8AMIIBCgKCAQEA7mR8A+Pn0/FsUkMX6Pyjw+FL3IFcJk8GaKV5VJ40TMI0Wh8oq20cqA9X uqnVDW9WztKwH+o+msJenLwWpprbpJm4TImYGbnUJxYyN8gb81aiX1Bw2xCpJ5z3H2+8DsReJLuY Rdl4bVvaIxLIL4odmfsRwzPyNkOK8LRtfl6OPcaDOlFWzbikULfIVGGu7BqK4lxQSpYwwpZkOMOB 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amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -95.878 X-Spam-Level: X-Spam-Status: No, score=-95.878 tagged_above=-999 required=5 tests=[AWL=0.295, BAYES_00=-2.599, HTML_MESSAGE=0.001, MIME_BASE64_TEXT=1.753, MIME_CHARSET_FARAWAY=2.45, RELAY_IS_221=2.222, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0l0Q82030Umr for ; Mon, 28 Sep 2009 18:33:41 -0700 (PDT) Received: from cmccmta.chinamobile.com (cmccmta.chinamobile.com [221.130.253.133]) by core3.amsl.com (Postfix) with ESMTP id 8F4B13A67E5 for ; Mon, 28 Sep 2009 18:33:40 -0700 (PDT) Received: from LENOVO-917FFE55 ([10.2.0.106]) by mail.chinamobile.com (Lotus Domino Release 6.5.5FP1) with SMTP id 2009092909374879-2496 ; Tue, 29 Sep 2009 09:37:48 +0800 Date: Tue, 29 Sep 2009 09:34:45 +0800 From: "zhangyunfei" To: "Lars Eggert" , "ppsp@ietf.org" References: Message-ID: <200909290934448757015@chinamobile.com> X-mailer: Foxmail 6, 2, 103, 20 [cn] Mime-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on jtgsml01/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2009-09-29 09:37:49, Serialize by Router on cmccmta/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2009-09-29 09:35:01, Serialize complete at 2009-09-29 09:35:01 Content-Type: multipart/alternative; boundary="=====003_Dragon433481606202_=====" Subject: Re: [ppsp] PPSP BOF approved X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Sep 2009 01:33:42 -0000 This is a multi-part message in MIME format. --=====003_Dragon433481606202_===== Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="gb2312" VGhhbmtzIExhcnMgZm9yIHRoZSBpbmZvcm1hdGlvbi5JdCdzIHZlcnkgZW5jb3VyYWdpbmcuSG9w ZSB0byBoYXZlIGEgZGV0YWlsZWQgZGlzY3Vzc2lvbiBvbiB0aGUgQk9GIGFnZW5kYSB3aXRoIHlv 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Sep 28 20:58:45 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 6A87A28C0FC for ; Mon, 28 Sep 2009 20:58:45 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -97.266 X-Spam-Level: X-Spam-Status: No, score=-97.266 tagged_above=-999 required=5 tests=[AWL=1.998, BAYES_00=-2.599, HTML_FONT_FACE_BAD=0.884, HTML_MESSAGE=0.001, MIME_CHARSET_FARAWAY=2.45, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XoqlwBT5Bbxw for ; Mon, 28 Sep 2009 20:58:44 -0700 (PDT) Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [119.145.14.66]) by core3.amsl.com (Postfix) with ESMTP id 1BB1F28C0EC for ; Mon, 28 Sep 2009 20:58:44 -0700 (PDT) Received: from huawei.com (szxga03-in [172.24.2.9]) by szxga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KQP005A6SDV15@szxga03-in.huawei.com> for ppsp@ietf.org; Tue, 29 Sep 2009 11:58:44 +0800 (CST) Received: from huawei.com ([172.24.1.33]) by szxga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0KQP00FDRSDVN4@szxga03-in.huawei.com> for ppsp@ietf.org; Tue, 29 Sep 2009 11:58:43 +0800 (CST) Received: from z63316 ([10.164.12.81]) by szxml06-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0KQP00CG8SDVA5@szxml06-in.huawei.com> for ppsp@ietf.org; Tue, 29 Sep 2009 11:58:43 +0800 (CST) Date: Tue, 29 Sep 2009 11:58:42 +0800 From: Ning Zong In-reply-to: <200909290934448757015@chinamobile.com> To: 'zhangyunfei' , 'Lars Eggert' , ppsp@ietf.org Message-id: <003001ca40b9$22f046e0$510ca40a@china.huawei.com> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Mailer: Microsoft Office Outlook 11 Content-type: multipart/alternative; boundary="Boundary_(ID_PedpM1mkGdmlUtubC6VOwg)" Thread-index: AcpApRPVf+6qp83GRKeiwnffYEYezQAFAYGQ Subject: Re: [ppsp] PPSP BOF approved X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Sep 2009 03:58:45 -0000 This is a multi-part message in MIME format. --Boundary_(ID_PedpM1mkGdmlUtubC6VOwg) Content-type: text/plain; charset=gb2312 Content-transfer-encoding: quoted-printable Thanks, Lars. =20 _____ =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of zhangyunfei Sent: Tuesday, September 29, 2009 9:35 AM To: Lars Eggert; ppsp@ietf.org Subject: Re: [ppsp] PPSP BOF approved =20 Thanks Lars for the information.It's very encouraging.Hope to have a detailed discussion on the BOF agenda with you. =20 Yunfei =20 _____ =20 zhangyunfei 2009-09-29 _____ =20 =B7=A2=BC=FE=C8=CB=A3=BA Lars Eggert =B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-09-28 22:13:04 =CA=D5=BC=FE=C8=CB=A3=BA ppsp@ietf.org =B3=AD=CB=CD=A3=BA=20 =D6=F7=CC=E2=A3=BA [ppsp] PPSP BOF approved =20 Hi, =20 I just wanted to drop you all a quick note that after the IAB/IESG BOF =20 call last Friday, we've approved the PPSP BOF for the next = IETF in =20 Hiroshima. =20 I'll work with the proponents on detailing the BOF agenda and = =20 assigning some BOF chairs. =20 Lars =20 PS: Secretariat (BCC'ed), please allocate an agenda slot for = the PPSP =20 BOF. =20 =20 _______________________________________________ ppsp mailing list ppsp@ietf.org https://www.ietf.org/mailman/listinfo/ppsp =20 --Boundary_(ID_PedpM1mkGdmlUtubC6VOwg) Content-type: text/html; charset=gb2312 Content-transfer-encoding: quoted-printable

Thanks, = Lars.

 <= /span>

From: = ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On = Behalf Of zhangyunfei
Sent: Tuesday, September = 29, 2009 9:35 AM
To: Lars Eggert; = ppsp@ietf.org
Subject: Re: [ppsp] PPSP = BOF approved

 

Thanks Lars for the information.It's very encouraging.Hope to have a detailed = discussion on the BOF agenda with you.

 

Yunfei

 

zhangyunfei

2009-09-29<= font size=3D3 face=3D=CB=CE=CC=E5>

=B7=A2=BC=FE=C8=CB=A3= =BA Lars Eggert

=B7=A2=CB=CD=CA=B1=BC= =E4=A3=BA 2009-09-28 22:13:04

=CA=D5=BC=FE=C8=CB=A3= =BA ppsp@ietf.org

=B3=AD=CB=CD=A3=BA

=D6=F7=CC=E2=A3=BA [ppsp] PPSP BOF approved

 

Hi,

 

I  just  wanted  to  drop  you  all  a  quick  note  that  after  the  IAB/IESG  BOF    

call  last  Friday,  we've  approved  the  PPSP  BOF  for  the  next  IETF  in   =  

Hiroshima.=

 

I'll  work  with  the  proponents  on =  detailing  the  BOF  agenda  and   =  

assigning  some  BOF  chairs.

 

Lars

 

PS:  Secretariat  (BCC'ed),  please  allocate  an  agenda  slot  for  the  PPSP   =  

BOF.

 

 

__________________________= _____________________

ppsp  mailing  list

ppsp@ietf.org

https://www.ietf.org/mailm= an/listinfo/ppsp

 

--Boundary_(ID_PedpM1mkGdmlUtubC6VOwg)-- From james.seng@gmail.com Mon Sep 28 21:38:04 2009 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 746EA3A6954 for ; Mon, 28 Sep 2009 21:38:04 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.977 X-Spam-Level: X-Spam-Status: No, score=-1.977 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, FM_FORGED_GMAIL=0.622] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id R58-UrrjBe2y for ; Mon, 28 Sep 2009 21:38:03 -0700 (PDT) Received: from mail-px0-f183.google.com (mail-px0-f183.google.com [209.85.216.183]) by core3.amsl.com (Postfix) with ESMTP id CC15A3A67D3 for ; Mon, 28 Sep 2009 21:38:03 -0700 (PDT) Received: by pxi13 with SMTP id 13so5620616pxi.6 for ; Mon, 28 Sep 2009 21:39:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:from:date:x-google-sender-auth:message-id:subject:to:cc :content-type; bh=pyCva/+4dVHk6YBZtAW7I0PJBILLPHNdco1JkLJH1aA=; b=SFD4YDeyU+cF1KR87V4b8hzGTWkYu0V1fowPaV21/t9Wpd9cH+X24/9yqC/D3cUdgJ u/D8ja3KYTlMyjqwhfh3pCaBpG0aGNN9mDtAUMLhkzmDXP9vBUvKp65o8oj8ZZh7UgIj FcNpVKwb+PA0CQtcodR+o4od0twfCj/ZR8q0M= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:cc:content-type; b=F8be3vw8g1EL4sGqaiThZVy7E7sbzZCogaf9Ikhen9ClaLC5rNsacZhhK9QbAtrUyf USWYT6HzBo4OqmCKSu0jU7wWh92jl9ae8LT5l5chGftylAzQAcv1ZBWV2+8Frx4MIWvy iY916FDdIwBVYk2Jvx+H7WOnDFFBcKVVrKP74= MIME-Version: 1.0 Sender: james.seng@gmail.com Received: by 10.140.247.13 with SMTP id u13mr172668rvh.72.1254199159048; Mon, 28 Sep 2009 21:39:19 -0700 (PDT) In-Reply-To: References: From: James Seng Date: Tue, 29 Sep 2009 12:38:59 +0800 X-Google-Sender-Auth: a8762d3e14630d2a Message-ID: <558a39a60909282138u7224e440mc455b03b5c47cbfc@mail.gmail.com> To: Lars Eggert Content-Type: text/plain; charset=UTF-8 Cc: ppsp@ietf.org Subject: Re: [ppsp] PPSP BOF approved X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Sep 2009 04:38:04 -0000 Good news :-) 2009/9/28 Lars Eggert : > Hi, > > I just wanted to drop you all a quick note that after the IAB/IESG BOF call last Friday, we've approved the PPSP BOF for the next IETF in Hiroshima. > > I'll work with the proponents on detailing the BOF agenda and assigning some BOF chairs. > > Lars > > PS: Secretariat (BCC'ed), please allocate an agenda slot for the PPSP BOF. > > > _______________________________________________ > ppsp mailing list > ppsp@ietf.org > https://www.ietf.org/mailman/listinfo/ppsp > >