An Enhanced TCP Vegas Algorithm Based on Route Surveillance and Bandwidth Estimation over GEO Satellite Networks
TCP Vegas provides better performance than TCP Reno with respect to overall network utilization, stability,fairness, throughput and packet-loss. Thus TCP Vegas is usually used in space communication environment as well as satellite networks, which have large bandwidth and long delay. However, TCP Vegas is inefficient in the large GEO satellite networks. The burst during slow-start phase causes Vegas to change from slow-start phase to congestion-avoidance phase too early, and it also has disadvantage that can not distinguish link changing and congestion. In this paper, TCP Vegas-W is presented based on route surveillance and bandwidth estimation, and with surveillance of bandwidth and Round Trip Time (RTT), congestion level is estimated much more correctly and precisely. Simulation results show that Vegas-W algorithm can get much better performance.
TCP Vegas-W Route Surveillance Bandwidth Estimation GEO Satellite Network
Jingyao Qu
Beijing University of Aeronautics and Astronautics, Beijing 100191, China
国际会议
长沙
英文
464-467
2010-03-13（万方平台首次上网日期，不代表论文的发表时间）