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Enhanced Snoop Protocol for Improving TCP Throughput in Wireless Links  

Cho Yong-bum (한국항공대학교 대학원 정보통신공학과)
Won Gi-sup (한국항공대학교 대학원 정보통신공학과)
Cho Sung-joon (한국항공대학교 항공전자 및 정보통신공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.6B, 2005 , pp. 396-405 More about this Journal
Abstract
Snoop protocol is one of the efficient schemes to compensate TCP packet loss and enhance TCP throughput in wired-cum-wireless networks. However, Snoop protocol has a problem; it cannot perform local retransmission efficiently under the bursty-error prone wireless link. In this paper, we propose Enhanced Snoop(E-Snoop) protocol to solve this problem of Snoop protocol. With E-Snoop protocol, packet losses can be noticed by receiving new ACK packets as well as by receiving duplicate ACK packets or local retransmission timeout. Therefore, TCP throughput can be enhanced by fast recognition of bursty packet losses and fast local retransmissions. From the simulation results, E-Snoop protocol can improve TCP throughput more efficiently than Snoop protocol and can yield more TCP improvement especially in the channel with high packet loss rates.
Keywords
Snoop; TCP; throughput; wireless; retransmission;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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