计算机科学 ›› 2017, Vol. 44 ›› Issue (Z11): 302-307.doi: 10.11896/j.issn.1002-137X.2017.11A.064
魏德宾,陶顺利,石怀峰,廖德林
WEI De-bin, TAO Shun-li, SHI Huai-feng and LIAO De-lin
摘要: 针对SCPS-TP(Space Communications Protocol Standards Transport Protocol)协议的Vegas算法在LEO (Low Earth Orbit)卫星网络中吞吐量下降的问题,提出了一种自适应Vegas-AD(Adaptive)拥塞控制算法。该算法在分析Vegas的基础上,细化往返时延RTT的计算方法,使其能够更加精确地调整拥塞窗口;优化拥塞窗口的增长策略,提高了拥塞避免阶段的带宽竞争力;同时,提出基于网络拥塞程度的自适应窗口调整因子。仿真结果表明,Vegas-AD算法的带宽竞争力明显高于Vegas,并且该算法能较大幅度地提高网络吞吐量。
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