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《Journal of Yangtze University(Natural Science Edition) Sci & Eng V》 2010-01
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Comparing Study of TCP Congestion Control Algorithms

CHE Lin,SHAUNG Xue-qin (Yangtze University,Jingzhou 434023)  
With the rapidly improvement of computer network,congestion control became serious gradually.Therefor,congestion control techniques became the hot issue and difficult issue of the Internet research on robustness.This paper introduced the TCP congestion control algorithms such as Newreno,Vegas,Sack1 and Fack in brief,and analyzed their characteristics.The NS simulator was used to evaluate their performance about congestion window,throughput,loss rate and the change of average queue.By analyzing and comparing,the simulation results show that Vegas algorithms for delaying measure of the congestion,meanwhile calculate the network congestion by the difference between actual transfer and expected speed,it is used to forecast the utility of network band well,the package loss rate is less than other three algorithms,Consequently it declines the length of buffer queue,and has a good application prospect.
【CateGory Index】: TP393.07
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