Event Details
TCP/IP Throughput Over Asymmetric Bi-Directional Satellite Networks
Presenter: Dr. Hosame Abu-Amara - Chief Technical Officer, Operations Support Systems Startup, Richardson, Texas and Adjunct Associate Professor, Dept. of Electrical Engineering, University of Texas, Arlington, Texas
Supervisor:
Date: Fri, May 9, 2003
Time: 14:30:00 - 15:30:00
Place: EOW 430
ABSTRACT
Abstract
Satellites are attractive vehicles for the transport of multimedia and broadband services. Satellites can be integrated in the core of wide-area networks, in broadband access, or in enterprise and private networks. Satellites enable the network operator to customize the network to the transport of specific mixes of applications, simplify congestion control and network management, and allow direct user-to-user interaction. They also have the advantage of high scalability and ease of deployment. In addition, GEO satellites can transport traffic from long distances to the gateways with uniform delay that is independent of terrestrial distances.
The impact of the large propagation delay of GEO satellite systems on TCP performance has been widely recognized. The IETF has issued several recommendations (RFC 2488) to enhance TCP performance over GEO satellite networks. The literature has many articles that discuss the performance enhancements obtained when combinations of these recommendations are implemented for symmetric or unidirectional GEO satellite systems.
We assess TCP performance for an asymmetric bi-directional GEO satellite system. By comparing TCP performance for the standard TCP stack (RFC 1122) with TCP performance for various combinations of IETF-recommended enhancements, we propose feasible mitigating strategies and suggest optimum strategies that produce maximum TCP performance enhancement at reasonable costs.
For Further Information Contact
Dr. N.J. Dimopoulos (721-8902)