无线Mesh网络中VOIP的QoS性能分析

摘要

针对VoIP（Voice over IP）业务在无线Mesh网上进行传输时存在服务质量（Qos）需求难以保证、带宽利用率低的问题，介绍了VoIP的OoS影响因素，分析了端到端时延、时延抖动和丢包率等几个重要参数，并对VoIP在无线Mesh网中的传输性能进行了论述。提出了基于无线Mesh网络的OoS保证机制，可以为端到端的数据传输公平的分配带宽，并能在保证OoS下实现大规模的实时任务的多跳转发。仿真试验表明能有效降低端到端时延，有着更好的OoS性能。%Aiming at such problems as quality of service （QoS） requirements difficult to be guaranteed and low bandwidth utilization in the VoIP （Voice over IP） services transmission in Wireless Mesh networks, this paper introduces the influence factors of VoIP QoS, analyzes such key parameters as end to end delay, time delay jitter, packet loss rate, etc. and discusses the transmission performance of VoIP in wireless Mesh networks. It puts forward the QoS guarantee mechanism based on wireless mesh network, which can implement equitable distribution of bandwidth for end to end data transmission, and guarantee QoS to achieve large-scale multi- hop real-time tasks. The simulation results show that it can effectively reduce the end to end delay, with better QoS performance.