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计算机工程 ›› 2008, Vol. 34 ›› Issue (1): 125-127. doi: 10.3969/j.issn.1000-3428.2008.01.042

• 网络与通信 • 上一篇    下一篇

基于概率丢弃策略的多级网络拥塞闭环控制

孙德辉,涂 平,李天宇   

  1. (北方工业大学现场总线技术及自动化北京市重点实验室,北京 100041)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-01-05 发布日期:2008-01-05

Closed Loop Control Based on Probability Drop Scheme of Multilevel Network

SUN De-hui, TU Ping, LI Tian-yu   

  1. (Key Laboratory of Beijing for Field-bus Technology & Automation, North China University of Technology, Beijing 100041)

  • Received:1900-01-01 Revised:1900-01-01 Online:2008-01-05 Published:2008-01-05

摘要: 随着Internet 技术的持续发展,Internet 发生严重拥塞的危险性更加令人关注,而有效的拥塞控制机制是保证Internet 稳定运行的关键因素之一。该文提出了一种基于多级网络节点的单神经元自适应PID闭环控制机制并对其进行了相关性能的分析。在多级网络节点的业务流模型基础上,运用OPNET仿真软件对其进行了不同输入和工作条件下的仿真,结果显示,在所设计的基于概率丢弃策略的闭环控制机制下,各级节点队列稳定性好且具有较好的鲁棒性。

关键词: 概率丢弃, 多级网络, 队列闭环控制

Abstract: With the constant development of Internet, the possibility of severe Internet congestion collapse receives much more concern. Efficient congestion control mechanism is one of the key elements to the stability of Internet. To solve the congestion problems, a PID control mechanism based on single nerve cell self-adaptive control algorithm is proposed and analyzed. Simulation that runs on the OPNET software is carried out on multilevel node traffic model. Simulation results show that the proposed mechanism works well in terms of stability of the all levels queue size and system robustness.

Key words: probability dropping, multilevel network, closed loop control of queue

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