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计算机工程

• 移动互联与通信技术 • 上一篇    下一篇

无线网络环境中传输控制协议的改进机制

李牧 1,2,张勇丁 2,向东蕾 2,于睿 1,2,王琰 1,2   

  1. (1.解放军理工大学通信工程学院,南京 210007; 2.中国电子系统工程研究所,北京 100840)
  • 收稿日期:2015-07-01 出版日期:2016-01-15 发布日期:2016-01-15
  • 作者简介:李牧(1990-),男,硕士研究生,主研方向为无线通信;张勇丁、向东蕾,高级工程师;于睿,硕士研究生;王琰,博士研究生。

Improvement Mechanism of Transmission Control Protocol in Wireless Network Environment

LI Mu 1,2,ZHANG Yongding 2,XIANG Donglei 2,YU Rui 1,2,WANG Yan 1,2   

  1. (1.College of Communication Engineering,PLA University of Science and Technology,Nanjing 210007,China; 2.Institute of China Electronic System Engineering,Beijing 100840,China)
  • Received:2015-07-01 Online:2016-01-15 Published:2016-01-15

摘要: 复杂的无线信道环境,使得传输控制协议(TCP)在无线网络中难以发挥较优性能,导致网络吞吐能力大幅下降。为此,在总结分析无线网络环境中影响TCP性能原因的基础上,针对信道高误码、链路中断引起的丢包,带宽资源竞争引起的时延抖动等所导致的TCP性能下降,综述相 应的TCP改进机制,并对改进机制的性能进行分析比较。结果显示,相对于传统TCP,这些机制能够更好地适应无线网络环境,提升网络吞吐量。

关键词: 传输控制协议, 无线网络传输, 随机误码, 链路中断, 往返时延

Abstract: The Transmission Control Protocol(TCP) can not show good performance in the complicated wireless channel network,so that the throughput of the network decays remarkably.Aiming at this problem,this paper analyzes the reasons affecting the network transmission performance firstly,and then summarizes some improved mechanisms of TCP to the questions,such as packet loss which is caused by high bit error rate and link outage,and delay jitter which is due to band competition.The comparative result indicates that the improved mechanisms can adapt the wireless network environment much better than the traditional TCP and improve the throughput of network.

Key words: Transmission Control Protocol(TCP), wireless network transmission, random error code, link interruption, round-trip time

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