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引用次数: 0
摘要
TCP (Transmission Control Protocol)是一种广泛应用于可靠IP网络的传输层协议。为了处理由于各种原因引起的网络拥塞，人们设计了许多算法。本文详细分析了基于时延且不依赖于往返时间(RTT)的弹性TCP拥塞控制算法。弹性TCP使用窗口相关加权函数(WWF)来决定拥塞窗口大小的更新。我们提出了一个增强的Elastic (e-Elastic)，以进一步提高性能。这些算法Elastic和e-Elastic更适合于高和中等带宽延迟积(BDT)，我们已经在网络模拟器-3 (ns-3)上对其进行了中等带宽延迟积(BDT)测试。我们提出的算法比Elastic、CUBIC、Veno和New Reno分别提高了5.11%、10.14%、10.69%和11.07%的平均吞吐量。
A comparative performance analysis of TCP congestion control algorithm: elastic TCP vs. e-Elastic TCP
The Transmission Control Protocol (TCP) is a widely used transport layer protocol for reliable IP networks. To handle congestion in the network due to various reasons many algorithms have been designed. In this paper, we have carried out a detailed analysis of the Elastic TCP congestion control algorithm which is based on delay and independent of Round-Trip Time (RTT). Elastic TCP uses a Window-correlated Weighting Function (WWF) for deciding the update of congestion window size. We have proposed an enhanced Elastic (e-Elastic) for further improvement of performance. These algorithms Elastic and e-Elastic are more suitable for the high and moderate Bandwidth-Delay Product (BDT) while we have tested it for moderate BDT on network simulator-3 (ns-3). Our proposed algorithm improves the average throughput with 5.11%, 10.14%, 10.69% and 11.07% over Elastic, CUBIC, Veno and New Reno, respectively.
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