水声通信网络定向搜索AODV协议研究

水声通信网络是水声研究的一个热点问题。由于水下声网络带宽窄、传播延迟大、能量受限等特点,无线电网络中一些成熟的路由协议,如DSDV、AODV等的应用受到了很大的限制。本文结合按需距离矢量(AODV)路由协议和地理位置协议,提出了一种适用于水下网络的路由协议——定向搜索AODV(DSAODV)路由协议。DSAODV协议利用地理位置信息约束路由请求分组(RREQ)寻找路由的范围,降低了路由寻径的开销,减少了网络拥塞。仿真结果表明,DSAODV协议在吞吐量、协议开销等方面都优于AODV协议。

Directed search AODV routing protocols for underwater acoustic networks

Underwater acoustic network is one of the key projects to study.Because of the narrow bandwidth,high propagation delay and energy limit of underwater acoustic network, some routing protocols in ad-hoc network such as DSDV,AODV can’t work well in underwater.Based on AODV routing protocol and geographical routing protocol,we advance a new routing protocol for underwater acoustic network—Directed Search AODV (DSAOSV)routing protocol.In DSAODV routing protocol,we use geographical location to limit the area of route request frame’s propagation.Then the cost of searching route and network congestion is reduced.Simulation results show that the performance of DSAODV routing protocol is better than the AODV routing protocol in throughput and protocol cost.