基于链路状态感知的无线Mesh网优化路由协议  

Link State Reasoning Based Optimized Routing Protocol for Wireless Mesh Networks

作　　者：王靖[1] 李芳芳[2] 于全[1] 

机构地区：[1]解放军理工大学研究生队,南京210007 [2]兰州工业学院,兰州730050

出　　处：《计算机科学》2012年第11期37-40,69,共5页Computer Science

基　　金：国家"973"计划项目(2009CB320403);国家自然科学基金项目(60832008)资助

摘　　要：在分析无线Mesh网路由协议所面临的挑战的基础上,结合无线Mesh网络的性能要求,以OLSR协议为原型,采用跨层设计理论,提出了一种基于链路状态良好程度的路由协议LR-OLSR。该协议引入了认知无线网络中的环境感知推理思想,通过对节点负载、链路投递率和链路可用性等信息进行感知,并以此为依据对链路质量进行推理,将其作为路由选择的依据,实现对路由的优化选择,提高网络的吞吐量,达到负载均衡。仿真结果表明,LR-OLSR能够在很大程度上提高网络中分组的递交率,降低平均端到端时延,在一定程度上达到负载均衡。Based on the analysis of the most important challenges in wireless Mesh networks,a link state reasoning based routing protocol was presented which is originated from optimizes link state routing protocol（LR-OLSR） with cross-layer design theory.The LR-OLSR protocol greatly optimizes routing performance by introducing the reasoning method to value the link quality depending on information such as the node load,the packet delivery ratio,and link availa-bility.The proposed protocol makes use of link quality as the routing metric during route selection,thus it can achieve optimal routing and load balancing in wireless Mesh networks.The simulation results show that the proposed routing protocol improves the packet delivery ratio,reduces the end-to-end delay,and achieves load balance in the route selection process.

关 键 词：链路状态感知 无线MESH网络 路由协议 表驱动路由 

分 类 号：TN919.72[电子电信—通信与信息系统]