移动Ad Hoc网络路由协议的性能分析与比较  

Performance Analysis and Comparison of Mobile Ad Hoc Network Routing Protocols

作　　者：王博[1] 李腊元[1] 

机构地区：[1]武汉理工大学计算机科学与技术学院,湖北武汉430063

出　　处：《计算机仿真》2008年第1期138-141,共4页Computer Simulation

基　　金：国家自然科学基金项目资助(60672137;90304018)

摘　　要：移动Ad Hoc网络是由一组无线移动主机组成的一个没有任何建立好的基础设施或集中管理设备的临时网络。网络拓扑易变、带宽、能源有限是移动Ad Hoc网络的主要特点。分析表驱动路由协议DSDV和按需路由协议DSR、AODV和TO- RA,并利用NS2软件进行了仿真实验,通过改变节点的暂停时间和移动速度这两个参数来比较这两个参数对这四种协议性能的影响。仿真结果表明,按需路由协议在分组投递率、端到端的平均时延、路由开销方面都表现出较好的性能。但同时结合表驱动路由协议的特点,为进一步在综合考虑以上两类路由协议特点的基础上研究新的路由协议提供很好的参考。Mobile ad hoc networks are collections of wireless mobile nodes, constructed dynamically without using any existing network infrastructure or centralized administration. Due to the limited transmission range of wireless network interfaces, multiple hops may needed for one node to exchange data with anther one across the network. Mobile ad hoc networks are characterized by limited power resource, high mobility and limited bandwidth. The paper analyses the mechanism of present table - driven protocols （ DSDV ） and on - demand routing protocols （ DSR, AODV, TORA）. Then the effects of the two parameters on the performance are analyzed and compared by changing the pause time and speed of nodes. The simulation results show that on - demand routing protocols provide better performance in terms of packet delivery fraction, average end - to - end delay of data packets and normalized routing load by NS2 network simulation software. The paper provides better references by using and comparing the characters and virtues of the two classes routing protocols for making new routing protocols.

关 键 词：目的节点序列距离矢量 动态源路由 按需距离矢量 临时排序的路由算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]