【作者】 王晓燕；

【导师】 刘乃安；

【作者基本信息】 西安电子科技大学 ， 通信与信息系统， 2005， 硕士

【摘要】 无线Mesh网络是一种高速率、高容量的多点对多点网络，是一种新型的解决“最后一英里”问题的分布式网络，可把它看成是Ad Hoc网络的简化版本。近些年来，WLAN得到一定的发展，但是，WLAN接入点覆盖范围比较有限，若要在一个较大区域内布设WLAN，则需要配置多个接入点，这样会增加网络成本。而无线Mesh网络有可能克服这种缺陷，因为在无线Mesh网络中，每一个节点均可转发数据，这样，就可以延伸传输距离。正如Ad Hoc网络一样，无线Mesh网络中的路由是它的一项关键技术。基于此，本论文对无线Mesh网络的路由协议进行研究。 文中首先介绍了无线Mesh网络的结构，特点以及应用；其次，借鉴Ad Hoc网络的三种类型的路由协议，将其应用到无线Mesh网络中，分析了三种路由协议的优劣；接着，重点研究了其中的一种动态源路由协议(DSR)的具体实现过程；最后，在DSR协议的基础上，对其进行改进，提出了一种基于拓扑结构的增强型动态源路由协议(TEDP)，对它进行性能分析和仿真，仿真结果表明：在节点静止时，TEDP与DSR协议性能基本相当，甚至还产生更多的应答消息。但是，当节点移动时，TEDP在时延和开销上都比DSR协议有较大的改善。最后一章引入了一种基于票的路由算法，该路由算法可以在源节点和目的节点之间找到多条路径以将单条路径上不能满足的带宽请求分配到多条路径上，论文探讨了该路由算法与TEDP的结合，但是由于时间紧张，还未完成二者结合使用时的性能仿真工作。更多还原

【Abstract】 Wireless Mesh network is a high-rate and high-capability network, it is a new type of distributed network solved "the last mile" and we can consider it as the simple edition of Ad hoc network. For several years, WLAN has developed well, but the propagable distance of its AP is limited, so if we want to set WLAN in a large area, we need lots of APs, which will be expensive. Wireless Mesh network should solve this problem. Because nodes in it could transfer data and doing so can expend propagable distance. As in Ad hoc network, route is an important part in wireless Mesh network. The article studies the routing protocol in wireless Mesh network.Firstly, the article introduces the structure, feature and application of wireless Mesh. Secondly, apply the routing protocol of Ad hoc network to wireless Mesh network. Thirdly, a detailed analysis is made in DSR protocol. Lastly, based on DSR protocol, an enhanced protocol-TEDP is proposed. The simulation results express that when nodes are static, TEDP is no better than DSR protocol. But when nodes move, the delay and overhead of TEDP are all improved. In the last chapter, a routing algorithm based on tickets is drawn into, which can allocate bandwidth request in one route to more routes in order to satisfy the bandwidth request. The article approaches the combination of TEDP and this routing protocol, but the property of combination of them is not still simulated. It is the next work in future.更多还原