Subject: [Roll] Fwd: [netseminar] Reminder : Stanford Networking Seminar, Thur Oct 15, Omprakash Gnawali

From: Philip Levis <[email-masked]>
Date: Wed, 14 Oct 2009 21:53:58 -0700

Apologies for sending this so last minute. Since there's been a lot of  
discussion of the strengths and weaknesses of CTP's mechanisms on the  
list, I thought folks in the Bay Area might be interested in hearing  
Om talk about it. Everyone is welcome. :)

Phil

Begin forwarded message:

> From: Yiannis Yiakoumis <[email-masked]>
> Date: October 14, 2009 12:51:10 PM PDT
> To: [email-masked],  [email-masked]
> Subject: [netseminar] Reminder : Stanford Networking Seminar, Thur  
> Oct 15, Omprakash Gnawali
>
> Stanford Networking Seminar Announcement
> http://netseminar.stanford.edu/
>
> Title: The makings of CTP Noe: A robust, reliable, and efficient  
> routing
> protocol for wireless sensor networks.
>
> Speaker: Omprakash Gnawali, Stanford
>
> When: 12:15 PM, Thursday October 15th, 2009
> Where: Gates 104
> http://forum.stanford.edu/visitors/directions/gates.php
>
> Lunch will be available at 11:45AM.
>
> About the talk:
>
> This talk describes the challenges in designing a sensor network
> routing protocol and presents CTP Noe, a widely-used collection
> routing protocol, to understand the key design features that make it
> robust, reliable, and efficient while remaining platform independent.
>
> Collection Tree Protocols (CTP) compute anycast routes to a single or
> a small number of designated sinks (destinations) in a wireless sensor
> network. Despite the critical importance of collection to almost every
> wireless sensor networks deployed to monitor the environment
> (buildings, rivers, forests, shipping containers, agriculture farms,
> etc.), prior to CTP, no collection layer was available that met the
> goals of robust, reliable, and efficient routing while remaining
> platform independent. CTP Noe advances the design of wireless sensor
> network protocol using three key ideas to meet those goals. First, it
> uses agile and accurate link estimator using information from the
> physical, link, and network layers. Second, it uses adaptive beacons
> to minimize control overhead without sacrificing agility to topology
> changes. Finally, it uses datapath validation of routing
> inconsistencies to quickly detect and repair loops. CTP Noe has been
> used on numerous deployments and tested on 12 different testbeds
> ranging in size from 20–310 nodes, comprising seven platforms, and six
> different link layers, on both interference-free and
> interference-prone channels. In all cases, CTP Noe delivers > 90% of
> packets, frequently achieving 99.9%. This talk describes how the three
> mechanisms (agile link estimation, adaptive beaconing, and datapath
> validation) together allow CTP Noe to work in such a wide range of
> settings and platforms, adapt to the physical, link, and network layer
> dynamics, and still offer highly-reliable and energy-efficient data
> delivery to the data collection sinks in the network.
>
> About the speaker:
>
> Omprakash Gnawali is a postdoctoral fellow in the Computer Science
> department at Stanford University. His research interests are network
> protocols and distributed systems, and their application to wireless
> and sensor networks. His past research has led to the design and
> implementation of a widely-used open-source sensor network routing
> protocol called CTP. He was also involved in the design, development,
> and deployment of various low-power wireless sensor networks. He
> received his Ph.D in Computer Science from the University of Southern
> California and Masters and Bachelors degrees in Computer Science and
> Engineering from the Massachusetts Institute of Technology.
>
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