PhD Thesis Proposal Defence


"On Bandwidth Adaptation for Multi-Rate Video Multicast"

By

Mr. Jiangchuan Liu


Abstract

Video multicast over the heterogeneous Internet is a challenging
undertaking. A promising solution is the use of multi-rate delivery, by
which the receivers in a session can receive video data at different rates
commensurate with their respective bandwidths. Numerous multi-rate schemes
have been proposed in the literature; however, the optimal bandwidth
adaptation policies for these schemes, especially with advanced video
coding techniques, have yet to be established. This proposal outlines a
systematic study on the above problem for principal multi-rate video
multicast schemes. We first investigate bandwidth allocation among objects
in an agent-based multicast system for object video distribution. We then
study the problem of optimal bandwidth allocation for cumulative layered
multicast and derived an efficient solution. We show that this allocation
algorithm can be seamlessly integrated into an end-to-end adaptation
protocol called HALM (Hybrid Adaptation Layered Multicast). Finally, we
point out some outstanding issues worth further investigations, including
optimal bandwidth allocation for non-cumulative layering and simulcasting
systems, as well as that in the multi- session multicast case.


Date:				Thursday, 6 March 2003

Time:				3:00p.m.-5:00p.m.

Venue:				Room 1504
				Lifts 25-26

Committee Members:		Dr. Bo Li (Supervisor)
				Prof. Lionel Ni (Chairman)
				Dr. Gary Chan
				Dr. Bing Zeng (ELEC)


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