基于RTT相位图的TCP拥塞控制  

TCP congestion control based on RTT phase-plot

作　　者：周敏[1] 陈前斌[1] 唐伦[1] 李云[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2009年第5期638-641,共4页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：国际科技合作项目计划(2008DFA12110);新世纪优秀人才支持计划(NCET-06-0778);重庆市自然科学基金项目(CSTC;2007BB2390;CSTC;2008BB2413);重庆市教育委员会科学技术研究项目(KJ070501;KJ080522)

摘　　要：异构无线网络中传统TCP协议性能大幅度下降。在不增加开销的情况下,利用三维相位图划分RTT所处空间区域来区分丢包原因,提出了一种新的TCP拥塞控制机制(TCP-BRP)。仿真结果表明,TCP-BRP增强了对拥塞和随机差错的区分能力,满足公平性要求,有效地提高了在异构无线网络环境下TCP的性能。The application of TCP over heterogeneous wireless networks is challenged with degressive performance. Without increasing costs, using three-dimensional phase-plot of round-trip-time （RTT） to divide space into several regions in which to distinguish the causation of packets loss, a new TCP congestion control mechanism, TCP based on round-trip-time phase- plot （TCP-BRP） was proposed. Simulation results show that TCP-BRP enhances the distinction ability of congestion and random errors, meets the requirements of fairness, and effectively improves the performance of TCP in heterogeneous wire- less network environment.

关 键 词：计算机网络 TCP 异构无线网络 TCP—BRP 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]