MPhil Thesis Defence


"TCP Performance Over Satellite Networks"

By

Mr. Kwan-Hung Yuen


Abstract

The rapid growth of Internet has provided a means for global
communication. The last frontier is extending this connectivity to remote
areas in a reliable manner. The broad coverage of satellite makes it a
very good candidate to provide connections to Internet in remote and
sparsely populated areas like the countryside, villages etc. In order to
provide reliable and effective connectivity, a good transport protocol is
needed. History has shown that TCP is a robust and reliable transport
protocol for terrestrial networks. However, the unique characteristics of
satellite network cause TCP to perform in a less desirable manner than on
terrestrial links. The longer round trip delay, much higher link error
rate and limited bandwidth affect the performance severely. The objective
of this thesis is to present a detailed study on the interaction of
different network parameters and their impact on TCP performance over
satellite. Results show TCP Vegas, the often-neglected TCP flavour could
provide very good performance on a satellite link. A new variant of TCP
Vegas which gives even better performance is also presented.


Date:				Wednesday, 22 January 2003

Time:				2:00p.m.-4:00p.m.

Venue:				Room 2503
				Lifts 25-26

Committee Members:		Dr. Jogesh Muppala (Supervisor)
				Dr. Jelena Misic (Chairman)
				Dr. Gary Chan


**** ALL are Welcome ****