[Cu-wireless] FW: CS COLLOQ, Li Li, March 11

Ralph Johnson johnson at cs.uiuc.edu
Tue Feb 25 08:47:36 CST 2003

Some of you will be interested in this.  Come ten minutes early if you want
a seat.
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University of Illinois at Urbana-Champaign
Department of Computer Science
1304 West Springfield Avenue
Urbana, Illinois 61801-2987   USA


     Topology Control and Routing in Multi-hop Wireless Ad Hoc Networks

             Erran L. Li (Li Li)
             Networking Software Research Department
             Bell Laboratories
             Holmel, New Jersey

             March 11 (Tuesday), 2003 at 10:00 a.m.
             2240 Digital Computer Laboratory

An ad hoc network is a multi-hop wireless network with no fixed
infrastructure. Rooftop networks and sensor networks are two existing
networks that can benefit from ad hoc networking technology. Ad hoc
networks can be widely deployed in applications such as disaster relief,
tetherless classrooms, battlefield situations, and pervasive computing.
In an ad hoc network, the topology can change rapidly as nodes move in
and out of each other's range, bandwidth is limited, and battery power
is often a signficant constraint. In this talk, I will address these
challenges.  I will first present a simple distributed algorithm where
each node makes local decisions about its transmission power and these
local decisions guarantee the global connectivity of the network, while
reducing energy consumption. I will then motivate and describe a simple
gossip-based ad hoc routing protocol that is more efficient and robust
than those previously proposed in the literature. These techniques make
ad hoc networks deployable in a wide variety of application scenarios.

Dr. Li (Erran) Li received the B.E. degree in Automatic Control from
Beijing Beijing Polytechnic University in 1993, M.E. in Pattern
Recognition from Institute of Automation, Chinese Academy of Sciences in
1996, and Ph.D. in Computer Science from Cornell University in 2001
respectively. During his graduate study at Cornell University, he worked
at Microsoft Research, Bell-Labs Lucent as an intern and AT&T Research
Center at ICSI Bekerley as a visiting student. He is presently a member
of the Networking Research Center in Bell Labs. His research interests
are in networking with a focus on wireless networking and mobile

Reception after the talk in 2240 DCL.

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