| 基于NS2的TCPW性能改进算法研究 |
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| 引用本文： | 邢苏珍,吴卫东.基于NS2的TCPW性能改进算法研究[J].中国海洋大学学报(自然科学版),2008(Z1). |
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| 作者姓名： | 邢苏珍 吴卫东 |
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| 作者单位： | 武汉科技大学计算机学院 |
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| 摘 要： | TCP Westwood(TCPW)和Vegas都是基于测量的TCP New-Reno增强算法。TCPW针对ACK流直接估算可用带宽,在慢启动和线性递增部分依然采用传统Reno的盲目递增的机制,导致发送端较为频繁的重传。对这几种算法原理进行分析阐述,并提出1种改进方法,更精确的测量估计带宽,通过网络仿真工具NS2进行验证,明显去除TCP全局同步现象,增强网络性能。
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| 关 键 词： | 传输控制协议 全局同步 拥塞窗口 NS2 |
TCPW Performance Improvements Algorithm Based on the NS2 |
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| XING Su-Zhen,WU Wei-Dong.TCPW Performance Improvements Algorithm Based on the NS2[J].Periodical of Ocean University of China,2008(Z1). |
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| Authors: | XING Su-Zhen WU Wei-Dong |
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| Institution: | XING Su-Zhen,WU Wei-Dong(Computer College,Wuhan University of Science , Technology,Hubei 430065,China) |
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| Abstract: | TCP Westwood(TCPW) and Vegas are enhancement algorithms of TCP New-Reno based on the measurement.Against ACK flow directly estimating available bandwidth,in the slow start and linear incremental part,TCPW still use the traditional blind growth mechanism of Reno,leading more retransmission.This article gives the algorithms principle analysis and an improved method,more precise measurement estimated bandwidth.Through the network simulation tools NS2,it obviously removes TCP synchronization of the overall situ... |
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| Keywords: | transmission control protocol the global synchronization congestion window NS2 |
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