一种基于区分服务网络的主动式队列管理算法

New AQM algorithm based on Diffserv network

现有区分服务网络的保证转发服务可提供稳定的带宽保证,但缺乏对速率变化下平均队列长度和延迟时间的稳定性的保证,并且没有提供简化主动队列管理(AQM)算法参数设置的有效方案。基于对RIO、A-RED算法的分析研究,提出一种自适应调整控制策略的RIO算法(A-RIO)。仿真结果表明,该算法在保持了RIO算法优点的同时,还可以提供稳定的平均队列长度和延迟时间,同时可以简化参数的设置,从而有效地提高了区分服务网络中保证转发服务的性能。

The current Assured Forwarding （AF） service in Diffserv network can provide stable guarantees in bandwidth, but cannot ensure stable average queue size and delay time as speed changes, and lack in efficient scheme of simplifying the parameters setting of an Active Queue Management（AQM） algorithm. Based on the analysis of the RIO and A-RED, an active queue management algorithm with adaptive control policy named A-RIO was proposed in this paper. Simulations results prove that the new algorithm can provide stable average queue size, delay time and simplify parameters setting, in addition to the advantage of RIO algorithm, also can effectively improve the performance of AF service in Diffserv network.