支持QoS的无线Mesh网络协同分布式调度算法  

Coordinated Distributed Scheduling Algorithm Based on QoS in Wireless Mesh Networks

作　　者：高雅[1] 陈志刚[1,2] 刘莉平[2] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083 [2]中南大学软件学院,湖南长沙410083

出　　处：《小型微型计算机系统》2011年第1期91-94,共4页Journal of Chinese Computer Systems

基　　金：总装备部预研基金项目(9140A15030308QT4801)资助;国家自然科学基金项目(60873082)资助

摘　　要：无线Mesh网作为下一代宽带无线通信网络的关键技术之一受到越来越多的关注.针对现有无线Mesh网MAC层调度算法的不足,提出一种基于TDMA模式的支持QoS的协同分布式调度算法(CDS-QoS:Coord inated Distributed Schedu ling-Quality of Service).算法的核心思想是在本次发送控制消息的同时预测下一次发送的时机,并告知其他节点,在预测的同时保证节点的QoS,对不同业务流进行有区分的调度.实验结果表明,CDS-QoS算法具有较高的时效性,并且能够有效保证不同多媒体业务的QoS.Wireless Mesh Networks is one of the most important next-generation broadband wireless communication technologies;it has more and more attention.For the deficiencies of existing scheduling algorithms,the paper proposes a coordinated distributed scheduling algorithm based on QoS in TDMA——CDS-QoS（Coordinated Distributed Scheduling-Quality of Service）.Its core is when the node has a transmission opportunity,it needs to predict and tell others its next transmission time.The mechanism schedules differently for different flows,so that it can guarantee the node′s QoS.Simulation shows that the algorithm has high efficiency,and can ensure the QoS of different multimedia services.

关 键 词：无线MESH网络 协同分布式调度 CDS-QoS TDMA 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]