无线Mesh网路由协议仿真及性能分析

Simulation and Performance Analysis of Routing Protocols based on Wireless Mesh Network

当前对无线网格网络(Mesh网络)主要研究之一是无线路由技术,即针对无线Mesh网络自身的特点进行路由设计。在熟悉基于Linux平台的网络仿真器(NS2)针对Mesh网络路由协议的仿真过程的基础上,利用NS2网络仿真软件分别从端到端平均时延、分组递交率、归一化路由开销三个方面比较了目前三种典型的路由协议——按需平面距离矢量路由(AODV)、动态源路由(DSR)和目的序列距离矢量路由(DSDV)的性能,并详细介绍了整个仿真过程的步骤。最后,通过分析AODV协议的吞吐量,得出网络最佳容纳的节点数,研究成果对协议的实现具有重要的应用价值。

At present,one of the main studies on wireless grid networks（mesh networks） is wireless routing technology.A routing protocol based on characteristic of wireless mesh network is designed.In familiarity with the simulation process of wireless mesh networks routing protocol by network simulator（NS2） based on Linux platform,the performance of the typical routing protocols-Ad hoc On-Demand Distance Vector Routing（AODV）,Dynamic Source Routing（DSR） and Destination Sequenced Distance Vector（DSDV） is compared from the three aspects of average end-to-end delay,packet submission rate,and normalized routing overhead,and the details of simulation process are given.Finally,by analyzing the throughput of AODV protocol,the best accommodation of node number by the network is obtained.And the research result is of important application value for the protocols implementations.