ENHANCED TCP HYBLA AND PERFORMANCE COMPARISON FOR SATELLITE LINK
Rakesh D. Vanzarat, Haresh S. Bhatt · 2014
Satellite link can be used to bridge the gap where traditional terrestrial network cannot reach or feasible. It always provides the connectivity even at the time of natural disaster. Satellite link has very high round trip time (RTT) and high bit error rate (BER). Standard transport protocol like TCP performs poorly for the satellite link. TCP hybla was proposed to resolve the issue of high RTT for the satellite link but its performance get degraded in presence of link losses. TCP westwood was proposed to resolve the issues of link losses for wireless networks but it performs poorly for the link with high RTT. In this paper, we present the detailed performance comparison of TCP hybla, TCP westwood along with proposed enhanced TCP hybla which improves the performance significantly for the satellite link. Enhanced TCP hybla combines the approach of TCP westwood with the TCP hybla along with few must needed modifications. This enhanced approach is implemented and tested using NS 2.