基于OPNET的试验通信网QoS性能分析与仿真

QoS Analysis and Simulation of Test Communication Network Based on OPNET

从试验通信网IP化的需求出发,使用OPNET仿真软件研究了IP技术体制下试验通信网的QoS性能,主要研究了区分服务机制的优先级排队(PQ)和加权公平排队(WFQ)两种队列调度算法。实验结果表明,在试验通信网带宽资源紧张的情况下,为保证重要程度高的任务信息的传输质量,可以通过PQ将其设置成高的优先级进行保障,或通过WFQ为其分配充足的带宽资源进行保障。

The paper uses a simulation software OPNET to study the QoS performance of the test communication network based on IP technology. Two scheduling algorithms, Priority Queuing （PQ） and Weight Fair Queuing （WFQ）, are studied, which are both based on the Differentiated Services （DiffServ） mechanism. The simulation results show that when there is a lack of bandwidth, in order to guarantee the transmitting quality of information of more importance, we can set it with higher priority when using PQ, or allocate enough bandwidth to it when using WFQ.