Adapting and Optimising TCP/IP on Satellite Networks
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Today communication has become an essential part of our lives. As communication becomes even more global, one has to search for new communication forms, which can satisfy the new needs of the customers. One emerging area is communication via satellites. As the TCP/IP protocol family is the most used protocol family in today's Internet, but was developed primarily for communication on wired links, it has suboptimal behaviour when used with satellite links.
The purpose of this master's thesis is to examine the shortcomings of using the TCP/IP protocol suite on satellite links, to see what types of problems occur in satellite communication, how these problems affect TCP/IP and to try to find solutions to the problems found.
The thesis begins with a presentation of the TCP/IP protocols and the issues regarding satellite communications, more precisely the DVB-RCS standard. Then we will take a look at existing improvements for TCP/IP communication over satellite links. The main part of the thesis is to study the behaviour of the different implementations of the TCP/IP protocolson satellite links and to examine possible improvements.
Finally there are presented the conclusions drawn. The experiments showed that better performance is achieved for initial congestion window sizes of 3 or 4. It was also seen a performance discontinuity at return channel bandwidth of 512 kbps. At low BER TCP Reno performed best, while at high BER no general behaviour was seen. However, at high BER TCP SACK or TCP FACK performed best in most of the studied cases.
Place, publisher, year, edition, pages
2001. , 88 p.
IdentifiersURN: urn:nbn:se:kth:diva-93283OAI: oai:DiVA.org:kth-93283DiVA: diva2:515530
Subject / course
Master of Science in Engineering - Computer Science and Technology
2001-03-22, Biblioteket, IMIT, Isafjordsgatan 22, Kista, 09:00 (English)
Maguire Jr., Gerald Q., professorLu, Heng
Maguire Jr., Gerald Q., professor