摘要： 针对现有基于控制论的主动队列管理(AQM)算法的不足，设计一种稳定裕度与网络特征参数(往返时延、通过瓶颈链路的TCP连接数、瓶颈链路的容量)无关的基于PI控制器的AQM算法GPM-PI。该算法响应速度快、计算开销小，能用于大时滞网络环境，抗干扰能力强(对TCP短流和UDP流有良好的控制能力)，鲁棒性好，能更好地适应Internet环境下的主动队列管理。

关键词: 拥塞控制, 主动队列管理, 稳定裕度, 抗干扰

Abstract: To overcome the weakness of existing AQM algorithms based on the control theory, a new AQM algorithm GPM-PI based on PI control is designed with the gain and phase margins constant. For the gain and phase margins of GPM-PI are independent on the network parameters(the RTT, the number of active connections of long lived TCP flows, the capacity of bottleneck), GPM-PI can be used in networks with large delay, has the properties of fast response, anti-disturbance and robustness, and it is more suitable for Internet environment.

Key words: congestion control, Active Queue Management(AQM), stability margin, anti-disturbance

中图分类号: 

• TP312