一种分簇Ad Hoc网络场景下的路由发现方案  

A Route Discovery Scheme of Clustering Ad Hoc under Network Scenario

作　　者：葛文豪 曾桂根[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《计算机技术与发展》2015年第2期64-68,73,共6页Computer Technology and Development

基　　金：江苏省科技支撑计划(工业)项目(BE2012182)

摘　　要：针对分簇结构Ad Hoc网络场景下的路由问题,提出一种基于接收信号强度(RSSI)和邻居先验信息的按需路由发现方案。该方案根据网络的分簇特点,在路由发现RREQ广播中,考虑节点间RSSI和中继节点业务负载情况,引入随机延时退避转发机制,综合判断是否转发RREQ报文,以解决场景中"广播风暴"引起的路由开销问题、优化路由发现的质量。仿真结果表明,与CBRP协议路由发现的性能相比,该方案大大降低了路由发现过程中控制包的开销,缩短了路由发现的时延,总体提高了网络性能。A scheme of reactive route discovery is proposed based on RSSI and neighbor priori-knowledge, aiming at routing problem of the clustering Ad Hoc scenario. Based on cluster network feature,this scheme considers the RSSI between nodes and traffic-load of relay nodes during RREQ broadcast, and introduces the delay back-off forwarding mechanism to comprehensively determine whether to for- ward RREQ packet, solving the routing overhead problem caused by broadcast storm and optimizing performance of route discovery. Sim- ulation results show that compared with performance of protocol CBRP, the scheme significantly reduces the route discovery control over- head and shortens the discovery delay, improving overall network performance.

关 键 词：分簇Ad HOC网络 路由发现 CBRP协议 接收信号强度 邻居节点表 

分 类 号：TN393[电子电信—物理电子学]