无线传感器网络的能耗均衡性能与寿命分析

Analysis of energy balance performance and network lifetime for WSN

为了改善网络的能耗均衡性能和延长网络的稳态寿命,在最小代价路由协议的基础上,对无线传感器网络的数据流量分布、能耗均衡性能和寿命等进行建模分析。首先确立研究的能耗模型和网络模型,采用网络寿命方程及其寿命终止条件的方法,对网络节点的能耗期望、流量、能耗均衡性能、寿命等进行推导和分析,以动态监测和发现区域中导致网络能量空洞的热点关键节点,为无线传感器网络的能耗均衡策略和路由优化机制提供一种新的识别可时变性强和能耗率高的热点节点,以及评价分析网络能耗均衡性能与寿命的方法。仿真结果表明,该方法可以实现网络能耗、数据流量、能耗均衡和网络寿命的准确评估。

In order to improve the energy balance performance and extend network stable lifetime, based on the minimum cost routing protocol, the study has analyzed the data flow distribution, energy balance performance and network lifetime for wireless sensor network. Firstly, we choose a common energy consump- tion model and a suitable network model for analysis, and give several network lifetime definitions, then we use network lifetime equations and end-of-life condition approaches to establish a model of network lifetime. Then this paper takes mathematical derivations and analysis for energy consumption expectation of node, data flow, energy balance performance, lifetime and other properties. This can dynamically monitor and find those hot nodes that cause network energy-holes, and provide a new method to distinguish hot nodes with high varia- bility and high energy consumption, and evaluate energy balance performance and lifetime for energy balance strategy and routing optimization mechanism in wireless sensor networks. The simulation results show that the proposed method can accurately evaluate the network energy consumption, data flow, energy balance and net- work lifetime.