• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2013, Vol. 35 ›› Issue (12): 52-57.

• 论文 • 上一篇    下一篇

异构混合网络环境下TCP协议性能分析

殷齐鹏,吴纯青,虞万荣,赵宝康,马延鹏   

  1. (国防科学技术大学计算机学院,湖南 长沙 410073)
  • 收稿日期:2011-05-16 修回日期:2011-09-20 出版日期:2013-12-25 发布日期:2013-12-25
  • 基金资助:

    国家863计划资助项目(2010AA7010203);国家973计划资助项目(613118)

Analysis of TCP performance in
heterogeneous networks          

YIN Qipeng,WU Chunqing,YU Wanrong,ZHAO Baokang,MA Yan   

  1. (School of Computer Science,National University of Defense Technology,Changsha 410073,China)
  • Received:2011-05-16 Revised:2011-09-20 Online:2013-12-25 Published:2013-12-25

摘要:

目前,有线网络、无线网络、卫星网络、高速网络均已成为承载网络,这种异构混合网络的主要特

点是部分链路误码率高、时延长、带宽不对称等。TCP是针对一般有线网络设计的协议,无法在异构混合

网络特别是卫星网络中发挥出最佳性能。利用OPNET模拟异构混合网络环境,得到误码率、时延、非对称

性对TCP 协议性能的影响规律,可以为恶劣环境下的TCP协议性能优化提供借鉴。

关键词: 异构混合网络, 误码率, 时延, 非对称性, TCP性能, OPNET

Abstract:

At present, wired networks, wireless networks, satellite networks and high-speed

networks all can carry the data payload, and the main features of heterogeneous networks are

high BER (Bit Error Rate), long delay, asymmetry of bandwidth in some links, and so on.

Since TCP is designed for normal wired networks so as not to work very well in heterogeneous

networks. OPNET is used to simulate heterogeneous networks, and obtain the regular of how

the BER, delay and asymmetry affect the TCP performance.  The obtained regular can provide a

reference for experiments on optimization of TCP performance in challenged networks.

Key words: heterogeneous networks;bit error rate;delay;asymmetry;TCP performance;OPNET