无线传感器网络能量模型

Energy Model in Wireless Sensor Networks

随机抛洒的无线传感器节点形成何种逻辑拓扑结构将直接影响高层通信协议和网络运行能耗,而合理使用有限能量资源是无线传感器网络研究的核心问题.基于传感器节点工作能耗分布特点和数据传输能耗模型,建立传感器节点能量模型和网络传输模式模型,对单跳传输和多跳传输两种方式下的网络总能耗和单节点能耗进行理论计算,并分析不同网络拓扑结构对网络能耗和网络运行的影响.通过理论计算推导出不同网络拓扑结构和传输模式下无线传感器网络总能量消耗公式和网络能耗分布规律,为设计能量有效的无线传感器网络拓扑结构提供指导,为实现无线传感器服务质量体系下的高层通信协议提供理论基础.

Because of the self-organized mode, the logic topology will greatly affect communication protocols and energy consumption. Based on the characteristics of sensor node＇s running energy and data transmitting model, a sensor node＇s energy model and a wireless sensor network＇s transmitting model were proposed. Then the total energy consumption of network and the energy consumption of single node in different transmitting models were deduced, and the energy consumption formula and energy distribution of network were obtained theoretically. The results can provide guidance for designing energy-effective topology and basis for the protocols in wireless sensor network＇s quality of service system.