摘要： 针对移动自组织网络(MANET)中优化链路状态路由(OLSR)协议路由稳定性差和端到端延时高的问题,提出一种改进的OLSR路由协议。考虑MANET拓扑的移动性,通过优先选择平均相遇率较小、稳定性较高的中继节点构建移动拓扑,避免路由震荡。基于跨层技术,利用链路层共享的链路速率优化路由权值,从而提高路由性能。实验结果表明,与OLSR协议相比,改进协议在MANET网络中具有更好的网络稳定性及更低的端到端延时。

关键词: 优化链路状态路由协议, 多点中继, 网络稳定性, 路由权值优化, 跨层设计, 链路速率

Abstract: Aiming at the problem of poor routing stability and high end-to-end delay in the Optimized Link State Routing(OLSR) protocol in Mobile Ad-hoc Network(MANET),an improved OLSR routing protocol is proposed.In view of the mobility characteristic of the MANET topology,the mobile topology is constructed by prioritizing the relay nodes with lower average encounter probability and higher stability to avoid route flapping.Based on the cross-layer technology,routing weights are optimized using the link rate shared by link layer to improve routing performance.The experimental results show that the improved protocol has higher network stability and lower end-to-end delay in MANET network than the OLSR protocol.

Key words: Optimized Link State Routing(OLSR) protocol, Multi-point Relay(MPR), network stability, routing weight optimization, cross-layer design, link rate

中图分类号: 

• TP393