论文部分内容阅读
在无线传感器网络(Wireless Sensor Network,WSN)组播路由算法的各类研究中,无状态组播可扩展性差,而分级及分支组播又存在单点失效问题.为权衡可扩展性及鲁棒性,提出一种鲁棒性分段组播路由算法(Robust Segmented Multicast Routing Algorithm,RSMR),将组播树分割成多个组播子树,并将这些组播子树的拓扑信息分布式地存储在一部分分支节点上,从而在控制分组头长度的同时减少了整个组播结构单点失效的概率.另外,还提出一种组播树存储节点的更新算法,在原存储节点剩余能量过小时,从附近选取一个新的存储节点,从而进一步提升整个组播结构的鲁棒性.仿真结果表明,RSMR能获得可扩展性及鲁棒性综合性能的提升,且在密集部署的大规模WSN中提升尤为显著.
In the research of Wireless Sensor Network (WSN) multicast routing algorithm, stateless multicast has poor scalability and single point of failure in hierarchical and branch multicast. To balance the scalability and robustness This paper proposes a robust Robust Segmented Multicast Routing Algorithm (RSMR), which divides the multicast tree into multiple multicast subtrees and distributes the topology information of these multicast subtrees in a distributed manner Is stored in a part of the branch nodes so as to reduce the probability of single-point failure of the entire multicast structure while controlling the length of the packet header. In addition, an update algorithm of a multicast tree storage node is also proposed. When the residual energy of the original storage node is too small, A new storage node is selected nearby to further enhance the robustness of the entire multicast structure.The simulation results show that RSMR can achieve the overall performance of scalability and robustness and enhance in large-scale deployment of dense WSN Especially notable.