一种基于树的无线传感器网络数据收集方法

A Tree Based Data Collection Scheme for Wireless Sensor Network

该文提出一种基于树的无线传感器网络数据收集方法,它将查询请求的传递与数据回传结构的建立有机结合起来,通过使用一种洪泛避免的方法传递查询请求,建立起一棵以sink节点为根的、包含最少中间节点的查询转发树,作为数据回传结构。理论分析和仿真试验表明,该方法不会降低无线传感器网络的连通性,可以有效节省能量。

Combining the delivery of query messages with the setting up of data transmitting structure, a novel distributed data collection scheme for wireless sensor network TBDCS （Tree Based Data Collection Scheme） is proposed in this paper. Using a flooding avoidance method, TBDCS sets up a tree with minimum intermediate nodes, which are also data aggregators when sensor nodes send data back. Theoretical analysis proves that TBDCS changes neither the network connectivity nor the shortest path＇s length between the sink and any other sensor nodes. Simulations show it significantly reduces the traffic and achieves longer system lifetime.