Abstract: In order to optimize the multi-interface and multi-channel resource in wireless mesh network, this paper studied the single-interface multi-path routing protocol and the policy of channel allocation in single-path networks, proposed the multi-path routing protocol-AODV-MP by combining the hybrid channel allocation method, which can not only realize the parallel transmission of multi-path in the network, but also increase the entire throughput rate of the network. Through analyzing the characteristics of multi-path routing protocol and considering the interference factors Signal-to-Noise Ratio (SNR) related to neighboring nodes, the routing metric judgment WCETTSNR was put forward, and the routing metric worked as the ratio standard for traffic distribution. The AODV-MP multi-path routing protocol had been tested on the NS2 network simulation platform and the results indicate that the proposed protocol can increase the network throughput by approximately 45% and largely decrease the network delay in the situation of heavy traffics.

Key words: wireless mesh network, multi-interface multi-channel, multi-path routing, hybrid channel allocation, parallel transmission

摘要： 为了优化无线Mesh网络中的多接口多信道网络资源，对单接口多路径路由协议和单路径信道分配策略进行了深入的分析研究，提出了与混合式信道分配方式相结合的多路径路由协议(AODV-MP)，实现了网络中多条路径的并行传输，从而提高网络的整体吞吐率。并根据多路径路由协议自身的特性，结合与邻居节点干扰相关的因素——信噪比(SNR)，提出了多路径路由的路由度量判决WCETTSNR，同时将该路由度量作为负载流量分配的比例标准。利用NS2网络仿真平台对该多路径路由协议进行测试，结果显示AODV-MP在网络吞吐率上提高了45%，并在高负载情况下，较大幅度地减少了网络延时。

关键词: 无线mesh网络, 多接口多信道, 多路径路由, 混合式信道分配, 并行传输