摘要
AODV采用按需的方式建立路由,从而相对其他MANET路由协议来说在能耗和开销方面都有较大的改善。但该协议在寻径过程中仅凭序列号来决定最佳路由,当序列号相同时则采用跳数最小的方式来确定最佳路由。无形中会使得某些次优路由被丢弃,从而增加了数据传输的时延。针对这一问题,提出来一个改进方法,在改进的协议中,源节点在序列号相同的情况下,同时保留最佳路由和次优路由以备不时之需。仿真结果表明改进的协议和原协议相比,降低了端到端的延时,更适合实时性要求高的应用。
On-Demand based AODV protocol is better than other MANET Routing protocols in energy consumption and overhead. It decides the best route by destination sequence number and the ＂least hops＂ route is selected when there are same sequence numbers. The discarding of some less better routing can trigger time prolonging for data transmission. To solve this proble we propose an optimized-AODV routing protocol which saves both best and better route in case of emergency when the source node has the same sequence number. The simulating results show that the optimized- AODV decrease the end to end delay and is much more suitable in real time situation compared with the original protocol.
出处
《电子测量技术》
2007年第11期201-203,共3页
Electronic Measurement Technology
