基于改进BERS算法的移动自组织网络能耗及时延优化

Optimizationscheme of energy consumption and delay in MANET based on improved BERS

针对移动自组织网络中传统的阻塞扩展环形搜索方案时延及耗能过多的问题,提出了一种基于路由节点泛洪终止的移动自组织网络(Mobile Ad hoc Network,MANET)阻塞扩展环形搜索方案.首先,源节点广播路由请求(RREQ)接收到路由应答(RREP)或生命周期结束时转发数据包;其次,为数据包设定一个单位时间的延迟以避免END指令和数据包之间的冲突;最后,中间节点根据接收到的不同消息类型执行不同的行动,如果识别出路由节点,则以当前跳数发送RREP(即Hr)给源节点,否则开启泛洪、重播RREQ.仿真实验验证了所提方案的有效性及可靠性.仿真结果表明,所提方案不仅降低了MANET的时延和能耗,同时很大程度上节省了总成本.

It is too much of energy consumption and delay in traditional blocking expanding ring search schema of mobile Ad hoc network, for which a MANET schema with BERS improved by routing node flooding terminating is proposed. Firstly, RREQ is broadcasted by source node and data package is forwarded when receiving RREP or lifetime is over. Then, time one unit is set so as to voiding the traffic of END instruction and data package. Finally, different activity is done by middle nodes according to different responds received, RREP is sent to source node with current jumps if it is routing node, otherwise, flooding is started and RREQ is rebroadeasted. The effectiveness and reliability of proposed schema has been verified by simulation experiment. Simulation results show that proposed schema has lower delay, energy consumption and total cost than traditional BERS schema,