区分服务网络中队列调度策略的研究与实现

分析了区分服务模型的体系结构，研究其实现IPQoS的各种控制策略，通过对区分服务的队列调度算法进行分析，对DWRR调度算法提出改进调度策略，设计出一种区分服务中队列调度PHB实现方案．通过在NS2仿真平台上测试，计算得出各个流获得的平均带宽，仿真结果图的比较分析，结果表明，仿真实现了对具有不同QoS请求的业务流的区分服务，说明此队列调度设计方案满足DiffServ中PHB的性能要求．

The Study and Implementation of the Queue Scheduling Policy in DiffServ Networks

In this paper, we are going to analyze the architecture of DiffServ model, research into its various control policies of implementing IP QoS, improve scheduling policies for DWRR scheduling algorithm, and design implementation scheme of queue scheduling PHB based on the analysis of queue scheduling algorithm of DiffServ. The average bandwidth of each stream is calculated through the test on the simulated platform NS2, and the comparison analysis on the simulation results indicate that simulation successfully implemented a DiffServ for the traffic which contains various QoS requests, which means that queue scheduling satis- fies the performance requirements of PHB in a DiffServ network.