Improved Transport Layer Performance Enhancing Proxy for Wireless Networks

Jeng-Ji HUANG
Huei-Wen FERNG

Publication
IEICE TRANSACTIONS on Communications   Vol.E89-B    No.1    pp.206-209
Publication Date: 2006/01/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.1.206
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Network
Keyword: 
TCP,  wireless networks,  performance enhancing proxy,  throughput performance,  Snoop protocol,  

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Summary: 
It is well known that deploying a proxy at the boundary of wireless networks and the Internet is able to improve the performance of transmission control protocol (TCP) over wireless links. Snoop protocol, acting like a transport layer proxy, performs local retransmissions for packets corrupted by wireless channel errors. In this letter, an improvement for the Snoop protocol is proposed to shorten the time spent on local recovery by sending extra copies in every local retransmission attempt. This enables TCP to quickly return to normal, effectively eliminating several of the problems that may cause throughput degradation.