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 (4): 70-74.

• 研究报告 • 上一篇    下一篇

Source-Bottleneck信源对ABR速率算法的影响

张琳, 赵鹏, 张惠民   

  1. 北京邮电大学信息工程系, 北京 100876
  • 收稿日期:1999-06-10 出版日期:1999-11-10

A Study on the Performance of ABR Source with Source-Bottleneck

Zhang Lin, Zhao Peng, Zhang Huimin   

  1. Department of Information Engineering, Beijing University of Posts and Telecom munications, Beijing 100876
  • Received:1999-06-10 Online:1999-11-10

摘要: 比较研究了一种特殊信源——Source-bottleneck信源在ATM网络中对ABR拥塞控制算法性能的影响.Source-bottleneck信源由于某些原因无法做到根据交换网络提供的信息相应改变信元发送速率, 由于网络交换节点对此不了解必然导致对Source-bottleneck信源分配的速率过大而浪费网络资源.当Source-bottleneck信源不再发生信源拥塞情况时, 网络又会因为瞬间增加的速率而发生拥塞.本文对不同的ABR拥塞控制算法进行了仿真, 并对结果进行了分析.

关键词: ATM网络, 可用比特率业务, Source-bottleneck信源

Abstract: The effect of a special ABR source, Source-bottleneck source, on the performance of several ABR flow-control algorithms is studied.TM4.0 require ABR source changes its rate according to network'sdemand.But Source-bottleneck source for some reason cannot do this perfectly insome time.If flow-control algorithms cannot discover this, algorithms may distribute more bandwidths to a Source-bottleneck source than it can use.This distribution is unfair to non-Source-bottleneck sources.This article studies several algorithms through ATM simulator and analyses the experimental results.

Key words: ATM network, ABR service, Source-bottleneck source

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