Colloquia, Seminars and Conference News
Title : Stochastic Control of Heterogeneous Networks
Date : April 6, 2007. (2:00 pm) Tea starts half an hour before each seminar
Location: ITEB 336
Speaker : Prof. Eytan Modiano
Abstract:
In this talk we will describe algorithms for resource allocation in heterogeneous networks that include wireless, satellite and wired (e.g., optical) sub-networks. We consider a network with stochastic traffic and randomly varying channel conditions. In the first part of the talk we address the joint problem of flow control, routing, and scheduling in a heterogeneous network subject to quality of service requirements. In particular, we will describe a dynamic control strategy that maximizes the sum utility in the network, and can be used to achieve a wide range of service objectives. This scheduling algorithm is centralized in its nature and requires the solution of a complex optimization problem. Hence, in the second part of the talk we will discuss distributed algorithms for solving the optimal scheduling problem with low computation and communication complexity. In particular, we will describe randomized algorithms for scheduling and routing in a wireless network that maximize network throughput with communication and computation requirements that are comparable to those of existing algorithms that can only guarantee 50% throughput.
Bio:Eytan Modiano received his B.S. degree in Electrical Engineering and Computer Science from the University of Connecticut at Storrs in 1986 and his M.S. and PhD degrees, both in Electrical Engineering, from the University of Maryland, College Park, MD, in 1989 and 1992 respectively. He was a Naval Research Laboratory Fellow between 1987 and 1992 and a National Research Council Post Doctoral Fellow during 1992-1993. Between 1993 and 1999 he was with MIT Lincoln Laboratory where he was the project leader for MIT Lincoln Laboratory's Next Generation Internet (NGI) project. Since 1999 he has been on the faculty at MIT; where he is presently an Associate Professor. His research is on communication networks and protocols with emphasis on satellite, wireless, and optical networks.
He is currently an Associate Editor for Communication Networks for IEEE Transactions on Information Theory and for The International Journal of Satellite Communications. He had served as a guest editor for IEEE JSAC special issue on WDM network architectures; the
Computer Networks Journal special issue on Broadband Internet Access; the Journal of Communications and Networks special issue on Wireless Ad-Hoc Networks; and for IEEE Journal of Lightwave Technology special issue on Optical Networks. He served as the Technical Program co-chair for Wiopt 2006, IEEE Infocom 2007, and ACM MobiHoc 2007.
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