移动Ad Hoc网络中路由自愈的实现

Realization of route self-healing for MANET

针对由于路由不稳定导致通信质量变差,建立了一种高效的适用于无线链路中断时路由重构的自愈模型,基于最优搜索方程提出了一种限制下一跳节点搜索区域的自愈的方法,旨在提高移动Ad Hoc网络的抗毁性,在路由损毁时维持数据持续传输的同时减小链路重构所需的开销和时延,以实现网络路由的快速自愈.基于NS-2的仿真结果表明,本文所提出的路由自愈方法对移动Ad Hoc网络的开销有较为明显的改善,有效的避免了网络节点的移动、RF传播条件变化、节点被毁等原因造成网络结构上的损伤,减少频繁路由寻找耗费的能量,从而实现了移动Ad Hoc网络的抗毁性以及路由的可用性.

Aimed at the node mobility and shared wireless links in Mobile Ad Hoc Network（MANET）,this paper proposes a route self-healing technique for source-initiated routing protocols by restricting the route-required zone on forward nodes in order to reduce the overhead and time delay during route maintenance and allow continuous packet forwarding for fault resilience.The NS-2 based simulation shows that the throughput is improved and the overhead is decreased for source-initiated routing with route self-recovery in the case of highly dynamic environments and heavy traffic loads,which proves that the proposed protocol is more robust and stable than other protocols.