基于分层结构的Ad Hoc网络应用层组播路由研究

Research On Application Layer Multicast Routing in Ad Hoc Networks

中文关键词:  AdHoc网络  应用层组播路由  分层结构  组播树  

英文关键词:Ad Hoc network  application layer multicast routing  hierarchical structure  multicast tree  

中文摘要:

      提出了一种基于分层结构的Ad Hoc网络应用层组播路由协议HALMP,将网络划分为多个子网,利用虚拟成员节点和延迟响应机制优化子网内共享组播树,以最小生成树方式构建子网间的源-群首组播树,数据分组转发时对组成员节点分布密集的区域引入本地广播机制。仿真结果表明,这些策略的采用优化了组播树,提高了分组转发效率,协议具有较好的可扩展性。

英文摘要:

      A novel hierarchical application layer multicast protocol called HALMP is proposed.In HALMP,whole network is divided into multiple sub-network.The virtual member node and the mechanism of deferring response are adopted in the multicast sharing tree of the sub-network.The multicast tree from the source to the group leader is created by minimum spanning tree.The local broadcast is used during data packets forwarded when distribution of members is dense.Simulation results show that these strategies optimize th...