【作者】 丁巍；

【导师】 陈红；

【作者基本信息】 西南交通大学 ， 通信与信息系统， 2010， 硕士

【摘要】 WiMAX Mesh网络即基于IEEE 802.16标准的无线Mesh网络,而WiMAX的成功和技术优势使得WiMAX Mesh极有可能成为无线城市的首选。本文正是基于WiMAX Mesh网络,对其中的路由协议和定向天线MAC机制展开研究。本文首先对基于IEEE 802.16d-2004标准的WiMAX Mesh网络原理和特点进行了分析,并简单介绍了专用的仿真模型WiMsh。随后对分布式WiMAX Mesh网络路由协议进行了较深入的研究,将WiMAX Mesh网络分为准Mesh模式和全Mesh模式,并分别对其中的路由协议进行了较深入的研究和分析。对于准Mesh模式路由协议的研究,将路由选择的范围扩展到2跳范围进行,仿真结果表明该方法能较大程度改善网络性能；对于全Mesh模式路由协议的研究,分析了典型的按需式路由协议和先验式路由协议,并对其进行了仿真对比,结果表明,按需式路由方式较适合WiMAX Mesh网络全Mesh模式。本文的最后一部分深入研究了WiMAX Mesh网络中的定向天线MAC机制,根据WiMAX Mesh网络的特点,进行定向天线MAC机制的研究和相关设计,并进行了仿真分析。仿真结果表明,在WiMAX Mesh网络中使用定向天线能大大提升网络容量。更多还原

【Abstract】 WiMAX mesh networks are wireless mesh networks based on the IEEE 802.16 standard, however the success and technological advantages of WiMAX make WiMAX mesh networks as the preferred scheme of wireless city. In this thesis, the routing protocol and directional antennas MAC machanism of WiMAX mesh networks are highlighted, and the thesis is organized as follows.Firstly, the principle and characteristics of WiMAX mesh networks based on IEEE 802.16d-2004 standard are analyzed.Then,the dedicated simulation model WiMsh is simply introduced.Secondly, an in-depth study on routing protocol of WiMAX mesh networks is carried out. WiMAX mesh networks are divided into quasi-mesh mode and full-mesh mode,routing protocols in both of them are studied and analyzed respectively.For routing protocol in quasi-mesh mode,method of routing selection by extending the selection scope to two hop range is adopted,simulation results show that this method can improved performance to some extent. And for routing protocol in full-mesh mode,analysis and simulation of both typtical on-demand routing and proactive routing are executed, the results of simulation show that on-demand routing protocol is more suitable for full-mesh mode of WiMAX mesh networks.Finally, an in-depth study on directional MAC machanism of WiMAX mesh networks is carried out. According to the features of WiMAX mesh networks, directional antenna MAC machanism is studied,and related design is proposed. The simulation results demonstrate that the network capacity can be greatly enhanced by using directional antennas.更多还原