一种新的快速响应的AQM算法  

A New AQM Scheme for Fast Response

作　　者：张天魁[1] 郭彩丽[1] 曾志民[1] 冯春燕[1] 

机构地区：[1]北京邮电大学通信网络综合技术研究所,北京100876

出　　处：《电子与信息学报》2007年第5期1191-1193,共3页Journal of Electronics & Information Technology

基　　金：博士点基金(2003001312)"基于MPLS流量工程的通信网络QoS研究"资助课题

摘　　要：该文应用控制理论,设计了具有快速响应特征的比例积分(Proportional-Integral,PI)控制器,并以此提出了一个新的主动队列管理(Active Queue Management,AQM)算法,称为ActivePI算法(简称A-PI)。A-PI用一组参数实现快速响应,用另一组参数保证队长稳定,使用门限值实现两组参数间平滑切换,算法实现简单。理论分析和仿真实验表明,A-PI算法在保证队长稳定的同时实现了对不同网络环境的快速响应。Based on control theory, a Proportional-Integral （PI） controller is designed which has a character of fast response. Consequently, a new Active Queue Management （AQM） scheme called Active PI algorithm （A-PI） is proposed, which employed double sets of parameters applying one set of parameters for fast response and the other for achieving queue＇s stability. A-PI controller uses threshold to shift parameter smoothly, and it can be implemented easily. Analysis and simulation results show that under various network conditions A-PI controller has a fast response and a good performance in stability.

关 键 词：控制理论 主动队列管理 PI控制器 ACTIVE PI算法 

分 类 号：TN915.07[电子电信—通信与信息系统]