北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 1999, Vol. 22 ›› Issue (2): 1-5.

• 学术论文 •    下一篇

基于ATM非对称线路下的TCP性能分析

张鹏, 程时端   

  1. 北京邮电大学程控交换技术与通信网国家重点实验室, 北京100876
  • 收稿日期:1998-06-26 出版日期:1999-03-10

Performance Analysis of TCP over ATM with Asymmetric Links

Zhang Peng, Cheng Shiduan   

  1. National Laboratory of Switching Technology and TelecommunicationNetworks, Beijing University of Posts and Telecommunications, Beijing 100876
  • Received:1998-06-26 Online:1999-03-10

摘要: 对ATM非对称线路下TCP的性能进行了分析, 目的是考察链路的非对称性对TCP性能的影响程度.通过定义非对称强度参数和建立模型, 推导出在非对称链路下TCP平均吞吐量的计算公式, 并用仿真实验验证了推导的有效性.结果表明, 链路的非对称性对TCP的平均吞吐量有直接影响, 在其它条件不变的情况下, 平均吞吐量与非对称性参数近似成正比.

关键词: 异步转移模式, 非对称数字用户线路, 传输控制协议

Abstract: The TCP performance in the case of ATM asymmetric links is analgzed.Our goaal is to investigate the impact of asymmetry on TCP performace.By defining the asymmetry parameter and building the model, we deduce theformula to calculate the TCP perfomance.Effectiveness of the deduction is verified by simulation studies.We conclude that asymmetry has a direct impact on TCP performance and the mean throughput is linear to the asymmetry parameter under the same condition.

Key words: ATM, asymmetric digital subscriber link, TCP

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