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Events for November 17, 2004
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Quality of Service in Ad-Hoc Networks
Wed, Nov 17, 2004 @ 02:30 PM - 03:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
SPEAKER: Mr. Rajarshi Gupta, UC BerkeleyABSTRACT: QoS mechanisms in the routing layer are insufficient, when distributed scheduling in MAC protocols like 802.11 is unfair. We first propose a novel backoff scheme that attains a higher degree of MAC fairness, by favoring congested nodes during scheduling. We prove the stability and optimality of the new scheme using Markov analysis, and use simulations to study its performance in larger random networks as well.We then address the feasibility of a given set of flows on an arbitrary ad-hoc network, by modeling the interference between links as a conflict graph. To provide sufficient conditions for feasibility, we propose clique-based constraints that are computationally simple, and may be evaluated in a distributed fashion.We use the above framework to design QoS routing algorithms for ad-hoc networks, that take interference into account. We demonstrate the efficacy of a distributed ad-hoc shortest widest path algorithm. We further propose IQ Routing - a source-based heuristic mechanism that is able to select QoS routed paths in a dynamic manner, using only localized state information.Bio: Rajarshi Gupta is a PhD candidate in EECS at UC Berkeley, and will graduate in May 2005. Prior to this, he completed his MS in 1999 at Berkeley, and his BS in 1997 at the U. of Maryland. From 1999 to 2003, Rajarshi worked with Extreme Networks as a Senior Designer, where he has been the author of 8 patents. He is interested in algorithms to ensure quality in networks - both wired and ad-hoc. This includes: analysis of network capacity; switching and scheduling mechanisms for efficient utilization of resources; and, routing algorithms to guarantee quality of service.Host: Dr. Michael Neely, mjneely@usc.edu
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Mayumi Thrasher
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Chemical Kinetic Studies of Combustion in Internal Combustion Engines
Wed, Nov 17, 2004 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Charles K. Westbrook,
Lawrence Livermore National LaboratoryFor more information, go to
http://ame-www.usc.edu/seminarsAudiences: Everyone Is Invited
Contact: Dennis Plocher
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Morley Builders
Wed, Nov 17, 2004 @ 05:00 PM - 07:00 PM
Viterbi School of Engineering Career Connections
Workshops & Infosessions
Join representatives from Morley Builders as they discuss employment opportunities within their company.
Location: Seeley G. Mudd Building (SGM) - 101
Audiences: Graduate/Undergrad Engineers
Contact: Engineering Career Services
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CSCI and CECS Major of the Month Workshop
Wed, Nov 17, 2004 @ 07:30 PM - 08:30 PM
Viterbi School of Engineering Student Affairs
Workshops & Infosessions
Find out more about the careers available to you with a major in CSCI or CECS, and learn about the differences between these two popular majors! All engineering students are welcome. Dinner will be provided.The Major of the Month series is sponsored by NSBE and Engineering Admission and Student Affairs.
Location: Grace Ford Salvatori Hall Of Letters, Arts & Sciences (GFS) - 101
Audiences: All Undergraduate Engineering Students
Contact: Erika Pratt
