军事通信中ad hoc网络路由协议性能分析

移动ad hoc组网灵活,抗毁性很强,将在未来的军事通信中发挥重要作用。因此,对于移动ad hoc网络研究中的首要的路由问题作了探讨,先简要介绍了两种典型的路由协议OLSR(Optimized Link State Routing)和AODV(Ad hoc On-Demand Distance Vector Routing),接着利用网络仿真工具OPNET分析了AODV的协议特点,最后比较了两种路由协议的性能。仿真结果表明AODV路由开销小,但时延大,节点移动过快时存在路由稳定性的问题;OLSR路由开销很大,但时延相对较小。因此在搭建军用adhoc网时,应根据实际使用情形做出选择。

Performance Analysis of Ad HOC Network Routing Protocol in Army Communication

The mobile ad hoc net has the properties of agility on building net and communicating uninterruptedly when parts of net is damaged. It will be an important role on future army communications. Based on this, routing which is the chiefly problem when researching on mobile ad hoc net is discussed in this paper. First, we introduce OLSR and AODV briefly, which are two typical routing protocols; Secondly, we analyze the property of AODV protocol with net simulation tool OPNET. Finally, the property of the two protocols is compared. The results indicate that AODV has a small route spending, but having a large delay. When nodes move quickly, there is a stability problem about AODV; Conversely, OLSR has a big route spending, but having a small delay. So when building mobile ad hoc net, we must select appropriate routing protocol according to the case of using.