The Session Initiation Protocol (SIP) was designed for wire line networks. It was
developed to initiate, modify and terminate sessions between two hosts on a network.
When the Internet expanded to include wireless hosts, SIP did not scale well for these
wireless hosts because of the nature of the wireless channel. Also, there were issues
with mobility and real time communication. This thesis proposes improvements to
some of the extensions to SIP, for better performance over wireless channels. We
investigate the call setup time for various transport mechanisms viz. TCP and UDP,
and study the performance of a dynamic Session Timers compared to the current
standard of a periodic refresh mechanism, where the frequency of UPDATEs vary with
the condition of the wireless channel. We also propose a handoff algorithm that
reduces the handover time with decreased packet losses.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/4917 |
| Date | 25 April 2007 |
| Creators | Rajaram, Vijay Sundar |
| Contributors | Miller,Scott L |
| Publisher | Texas A&M University |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | 494499 bytes, electronic, application/pdf, born digital |
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