一种新的快速响应的AQM算法
doi: 10.3724/SP.J.1146.2005.01443
A New AQM Scheme for Fast Response
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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Active PI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。Abstract: 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 queues 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.
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