摘要
介绍了AODV路由协议本地修复的机制,从中分析了原AODV路由协议本地修复机制来回发送RREQ带来的延迟、低效率等一系列问题,提出了优化方案的实现方法。优化方案主要利用广播一个链路修复消息,同时完成了路由查找和路由建立的过程,与原路由本地修复相比,节省和避免了来回发送RREQ所造成的开销和延迟,能够更好的适应节点移动性较高、拓扑变化较剧烈的环境。通过NS仿真结果得出在数据发送成功率和减少数据传输延迟等方面比原AODV路由协议有明显的改善。
The local repairment of AODV protocol is introduced,from the analysis of original local repairment of AODV protocol.It gets the RREQ delay,low efficiency of a series of issues,brings up a method and implement of optimization.It main uses broadcasting a message of chain suspended to complete the process of both route lookup and route building,compared with the original local repairment of AODV.It saves and avoids the costs and delays of sending RREQ.It can better adapt to the mobility higher nodes and more drastic changes topology in the environment.The NS simulation results indicate that the improved method results in more sending the success rate of data and less routing overhead while reconstructing route compared to the orginal method to some extent.
出处
《科学技术与工程》
2007年第21期5662-5664,共3页
Science Technology and Engineering
关键词
路由协议
本地修复
链路中断
仿真
routing protocol local repair chains suspended simulation
