The Taub Faculty of Computer Science Events and Talks

Media streaming over TCP is becoming popular because TCP's congestion control provides remarkable stability to the Internet. However, TCP also introduces significant latency and throughput variability in the presence of mobility and frequent handovers. The effect of handovers can be mitigated if the packets received by the old base station during handover are forwarded to the new base station. When the bandwidth of the backbone is scarce, as in a multihop wireless network, packet forwarding is limited. In such a case, the base stations must be selective about which packets to forward and which to drop. In this paper we define this as an optimization problem, propose algorithms for solving it, and validate the effectiveness of these algorithms using analysis and simulations.