用于大规模无线传感器网络突发事件监测的路由策略

Routing strategy for emergency monitoring of large-scale wireless sensor network

针对大规模无线传感器网络(Wireless sensor network:WSN)突发事件监测的应用问题,提出了一种基于事件驱动成簇和时延梯度路径树的路由策略。该策略在簇头选举时综合考虑了节点剩余能量、距离Sink节点的跳数、与邻居节点的连通性以及父节点数目等因素以节省和均衡网络能耗,并通过时延梯度路径树和多路径选择实现数据的及时和可靠传输。仿真结果表明:该策略能够提高无线传感器网络的能量效率,使网络生命周期比LEACH(Low-energy adaptive clustering hierarchy)算法和AEEC(Adaptive and energy efficient clus-tering algorithm)算法分别提高2倍和1.4倍,比ARPEES(Adaptive routing protocal withenergy efficiency and event clustering for wireless sensor networks)算法延长了15%。

A routing strategy based on event-driven clustering and delay grades tree for large-scale emergency monitoring Wireless Sensor Network（WSN） was proposed.In order to save and balance energy consumption of the whole network,when choosing the cluster head this strategy takes several factors into account,including the residual energy of a node,the hops from the node to the sink node,the connectivity of the node with its neighboring nodes,and the number of its father-nodes.In addition,the delay grades tree and the multi-path selection guarantee the real-time and reliable data transmission.Simulation results show that the strategy can improve energy efficiency and prolong the life of WSN up to 200% against LEACH protocol,140% against AEEC algorithm,and 15% against ARPEES.