一种高性能的TCP Vegas改进算法  

A High Performance TCP Vegas Revised Algorithm

作　　者：卢尧[1] 陈蜀宇[2] 姚章俊[1] 刘小威[1] 

机构地区：[1]重庆大学计算机学院,重庆400030 [2]重庆大学软件学院,重庆400030

出　　处：《计算机与现代化》2012年第2期102-107,共6页Computer and Modernization

基　　金：重庆市自然科学基金资助项目(2008BB2307)

摘　　要：TCP Vegas由于慢启动过早结束,拥塞避免阶段调整周期过长等原因,在与TCP Reno共存的网络环境中无法公平共享可用带宽。针对这些造成Vegas在竞争环境中过于保守的问题,本文提出一种高性能TCP Revised Vegas算法,该拥塞窗口控制算法采用平滑处理和增量因子的思想,增加Vegas的侵略性。通过数值分析和模拟实验,证明新算法在单一部署环境或者混合共存环境下,性能都得到提高,且公平性得到改善。Due to the slow-start phase of TCP Vegas stop prematurely and the adjustment cycle of congestion avoidance phase is too long,TCP vegas can not share the available bandwidth when it coexists with TCP Reno.Because Vegas is too conservative in a competitive environment,this paper proposes a TCP Revised Vegas algorithm of high-performance,this congestion window control algorithm uses a smoothing dispose and incremental factor,increases Vegas aggressive.Through numerical analysis and simulation experiments show that performance and fairness of the new algorithm are improved whether in the single environment or the mixed environment.

关 键 词：TCPVegas 慢启动 拥塞避免 公平性 平滑处理 增量因子 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]