基于无线Mesh网络的路由协议研究

Router protocol research basedon wireless mesh network

无线Mesh网络是一种新型的无线通信网络,由于发展不成熟,没有统一的通信方案,路由协议也是一样。现有路由协议各有各的缺陷,在分析了各类协议的优势和不足后,提出一种基于多收发器Mesh节点的路由算法,可以避开一些任务繁忙的节点,降低网络延时。在新型体系下,Mesh节点的路由选择主要基于路由的期待传输时间(expected transmission time,ETT),而不是最小跳数,能够更好的进行路由选择,避免增加局部网络拥堵,增加网络的吞吐量。通过仿真软件OMNeT++4.0进行仿真可以发现,新型路由体系应用在网络流量大的场合相比传统路由体系将具有明显优势。

Wireless mesh network is a new system of wireless information exchange network, due to the immature solution of communication protocols, there is no unified communication solutions. The existing routing protocol each have their own shortcomings,after analyzing the advantages and disadvantages of various types of protocol, proposeda routing algorithm based on multi transceiver which is able to avoid those busy nodes and to reduce network latency. Under the new system, mesh node would choose routing mainly based on ETT（expected transmission time） of every routing rather than minimum hops, which would provide a better way to choose routing that is able to avoid increasing partial network congestion while increasing network throughput. With thehelp of simulation software OMNeTq-q-4.0, we can found that the new routing system has some advantages in network-traffic occasions comparing with traditional routing system.