Title: TCP/IP performance across optical packet-switched networks

Speaker: Jingyi HE



Optical packet-switched (OPS) networks are believed to be

the promising solution to the optical Internet which has

high bandwidth efficiency in addition to the large capacity.

Given that TCP is the most prevalent end-to-end transport

protocol in the Internet, how it performs across OPS networks

is of great interest. However, OPS networks have some special

mechanisms such as packet aggregation and deflection routing

which are different from the electronic packet-switched networks.


In this talk, we present our results on the impact of deflection

routing and packet aggregation on TCP performance in OPS networks.
We show that deflection routing can significantly improve the TCP

fairness, although it may not be very effective in improving the

TCP throughput in some cases. We study two packet aggregation

schemes, namely, mixed-flow aggregation and per-flow aggregation.

We show that mixed-flow aggregation performs better
than per-flow aggregation in terms of both TCP throughput and fairness.



Jingyi He received the B.Eng. and M.Eng. degrees both in optoelectronic

engineering from Huazhong University of Science and Technology, Wuhan,

P. R. China, in July 1996 and June 1999, respectively. He is currently a Ph.D.

 candidate in the Department of Electrical and Electronic Engineering at the Hong

 Kong University of Science and Technology. His research is on optical Internet.

 See http://www.ee.ust.hk/~eehjy/ for more information.