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一种基于ECN的无线TCP拥塞控制机制
引用本文:韩江洪,吴迈,刘征宇.一种基于ECN的无线TCP拥塞控制机制[J].电信科学,2010,26(2).
作者姓名:韩江洪  吴迈  刘征宇
作者单位:合肥工业大学,合肥,230009
基金项目:广东省教育部产学研结合基金资助项目(No.2009B090300303);;安徽省科技攻关基金资助项目(No.07010202045);;中兴通讯研究基金资助项目(No.ZXJH20041221-0056)
摘    要:针对无线异构链路环境中传统TCP拥塞控制机制效率较低的问题,本文提出一种基于ECN的多级反馈算法。该算法在ECN的基础上可以根据RTT动态地给网络划分等级并进行概率反馈,改变了ECN的二元特性,有效提高了无线数据传输效率。仿真结果表明该算法可降低丢包率,减少拥塞次数,提高吞吐量。

关 键 词:无线TCP  ECN  拥塞控制  往返时间  多级反馈  

ECN-based Congestion Control Mechanism for Wireless TCP
Han Jianghong,Wu Mai,Liu Zhengyu.ECN-based Congestion Control Mechanism for Wireless TCP[J].Telecommunications Science,2010,26(2).
Authors:Han Jianghong  Wu Mai  Liu Zhengyu
Affiliation:Hefei University of Technology;Hefei 230009;China
Abstract:TCP has been used widely in all sorts of wireless environments.However,the congestion control approaches designed for wired TCP or even some wireless situations are not effective enough.This paper proposes a multi-level ECN-based feedback algorithm MLF_ECN,which works by dividing the network congestion level dynamically.The simulation results show that this method can smooth the congestion window,reduce the loss rate of congestion packets,and it can also improve the throughput of the network efficiently.
Keywords:wireless TCP  explicit congestion notification  congestion control  round trip time  multi-level feedback  
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