北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2005, Vol. 28 ›› Issue (4): 5-9.doi: 10.13190/jbupt.200504.5.077

• 论文 • 上一篇    下一篇

一种快速响应的AQM算法

曾志民,张天魁,冯春燕,丁炜   

  1. 北京邮电大学 继续教育学院, 北京 100876
  • 出版日期:2005-08-28 发布日期:2005-08-28

An AQM Scheme for Fast Response

ZENG Zhimin,ZHANG Tiankui,FENG Chunyan,DING Wei   

  1. School of Continuing Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Online:2005-08-28 Published:2005-08-28

摘要:

基于主动队列管理(AQM)控制理论模型,针对PI(proportionalintegral)控制器响应速度方面的不足,在PI控制器基础上增加了归一化输入速率控制,提出了一种适应网络环境动态变化的AQM算法——P〖JP9〗I-〖JP〗R(proportionalintegralrate)控制器. 理论分析 和仿真实验证明,P〖JP9〗I-〖JP〗R控制器在保证队长稳定和链路利用率的同时实现了对 网络状态变化的快速响应,也可以提高缓冲区利用率.

关键词: 主动队列管理, PI控制器, P〖JP9〗I-〖JP〗R控制器

Abstract:

A proportionalintegralrate (PIR) controller for active queue management (AQM) scheme based on the linearized AQM model was proposed. PIR controller is well suited to dynamic network environments where traffics change frequently. In order to address the slow response of PI controller, a normalized input rate control PIR controller was used to speed up the responsive time under varying network conditions. Analysis and simulation results show that under varying network conditions PIR controller will have a fast response and improve the buffer utilization, and have a good perform in stability and link utilization.

Key words: active queue management, proportionalintegral controller, proportionalintegralrate controller

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