Improvement of TCP-Westwood over Satellite Networks
Lixiang Liu · Jisuanji gongcheng · 2007
TCP-Westwood(TCPW) is shown to provide significant performance improvement in the case of high BER.But its performance gain is achieved on the base of packet losses and its throughput decreases with RTT growing.An improved scheme TCPW-S is proposed in this paper to make TCPW more suitable for satellite network with scarce resource and long delay.After every RTT,congestion window is adjusted to the estimated bandwidth with a conservative policy.Simulation results reveal that throughput of TCPW-S increases while packet losses drop a lot.