无线MESH网络的很多技术特点和优势来自于MESH多跳路由。因此,路由协议的研究与设计是无线MESH网络技术的一个重要课题。由于无线MESH网络有自身负载均衡、路由容错与网络容量等要求,因此运用跨层设计,采用更好的路由参数,使用多径路由等方法已经成为无线MESH网络路由协议设计的重要思路。根据无线MESH的网络特点,按照其路由协议的设计要求,分析了路由协议dSr在MESH网络中的不足,引入跨层设计的方法,提出了采用路由质量路径帧投递率(Pfdr)为路由准则,并具有负载平衡、拥塞避免的路由协议CMrP。分析和仿真结果表明,CMrP在保持MESH网络自身优点的同时,比起dSr在网络性能上有了较大的提升,在吞吐率方面有了很大的提高,相应的时延、抖动参数均有了大幅的下降,更加适用于无线MESH网络。Wireless Mesh Network(WMN) is a technology with outstanding technical characteristics and advantages,many of which originate from the muti-hop routing.Therefore,the study and design of routing protocol is of utmost importance for WMN.In order to satisfy the requirements of WMN such as load balancing,fault tolerance,network capacity,techniques such as cross-layer design and multi-path routing may have to be considered in protocol design for WMN.The deficiencies of Dynamic Source Routing(DSR) protocol applied in WMN is analysed,and an improved routing protocol Cross-layer Multi-path Routing Protocol(CMRP) is proposed,using PFDR(Path Frame Deliver Rate) as the measure.Analysis and simulation results show that CMRP greatly improved the network performance,in load balancing,congestion avoidance,link failure sensing mechanism and the capability of multi-path routing.福建省自然科学基金资助项目(A0710022
