Abstract: A multisource to singlesink routing algorithm based on data query for wireless sensor network was proposed to resolve the problem of huge energy consumption and the redundant links at path reinforcement stage in directed diffusion. Clustering was used to reduce the energy consumption of plane flooding, and the next hop nodes were selected based on the priorities of the neighbor nodes to build the routes from multisource to singlesink and fuse data at the intersection of the routies. The simulation results show that the algorithm can balance the energy consumption, improve the energy efficiency, reduce the number of packets, and prolong the network lifetime.

Key words: Directed Diffusion (DD), local routing, multisource to singlesink, network lifetime

摘要： 针对定向扩散巨大的能量开销以及在路径加强时存在的链路冗余等问题，提出了一种基于查询的无线传感器网络多源单汇路由算法。该算法通过网络分簇来减少平面泛洪所带来的能量消耗，根据邻居节点的优先级来选择下一跳节点，建立多条源节点到Sink节点的路径，并在路径交叉处进行数据融合。仿真结果表明，该算法在节点能耗均衡性、能量有效性、数据包的传输量等方面具有明显的优势，有效地延长了网络生命周期。

关键词: 定向扩散, 局部路由, 多源单汇, 生命周期