Congestion Control Over Coded Networks

Monday, January 11, 2010 - 6:00 p.m. to Tuesday, January 12, 2010 - 6:55 p.m.
Center for Pervasive Communications and Computing Seminar Series
Featuring Hulya Seferoglu
Ph.D. Candidate
The Henry Samueli School of Engineering, UC Irvine

Location:  Engineering Gateway 3161
Free and open to the public

Abstract:
In this work, we study congestion control for unicast sessions over wireless networks with intersession network coding. The key intuition is that flows that are coded together do not compete for resources, and congestion control mechanisms need to be modified to take this into account. We take the following steps. First, we formulate the problem as utility maximization and present a distributed solution. Then, using the structure of the optimal solution, we propose minimal changes to current transport and queue management protocols so as to make them "network coding-aware," in the sense that they make decisions based on the network coding and congestion state. Finally, we demonstrate, via simulation, that our schemes outperform network coding-unaware protocols, such as standard TCP, and achieve near-optimal performance.

About the Speaker:

Hulya Seferoglu received the B.S. degree in electrical engineering from Istanbul University, Turkey, in 2003, and M.S degree in EECS from Sabanci University, Turkey in 2005. She worked as a summer intern in Microsoft Research, Cambridge and in Docomo USA Labs in 2007 and 2008, respectively. She is currently working towards the Ph.D degree at the University of California, Irvine. Her research interests include network coding, congestion control, and multimedia streaming. She received a CPCC graduate fellowship for the years 2006-08.