【摘要】 在Ad Hoc无线网络环境下,提出了一种基于DSDV的多径路由协议。通过新建一个类似路由表的邻居节点表结构,来实现多径扩展。在选择路径时采用一种基于最佳信道状态准则和最短路径准则的混合路径选择准则,该准则需要用到MAC层的信息,涉及跨层设计;多径的传输模式采用多径独立传输模式(d ividual transm ission)。仿真表明,新协议在多径独立传输模式下,以少量的递交率性能为代价,大幅度提高了整个网络的吞吐量,增大了网络资源的利用率。更多还原

【Abstract】 A multi-path routing protocol based on DSDV(Destination Sequenced Distance-Vector) in Ad hoc networks was proposed.A new neighbor node structure like routing table was established by which the multi-path mode can be expanded.The proposed protocol chooses routing by a hybrid criterion which is based on the shortest path criterion and the best channel state criterion.The hybrid criterion makes use of the information at physical layer related to cross-layer technique.The multi-path dividual transmission was employed as the transmission mode of paths.The simulation shows that,by the mode of multi-path dividual transmission,the proposed protocol greatly improves the throughput of the whole network at the expense of little delivery performance,and increases the utilization ratio of network resources.更多还原