无线传感器网络的通信能量有效性的研究

Study on the Energy Efficiency of Communications in Wireless Sensor Networks

无线传感器节点通常依靠电池供能,为了满足无线传感器网络的往往长达数年的生命周期要求,应当努力提高其能量有效性,特别是消耗大部分能量的通信模块的能量有效性。首先系统讨论了无线传感器网络的通信的能量有效性的研究现状,然后基于传感器节点的通信模块的功耗特性,运用应用驱动和跨层优化的方法,设计了一种无线传感器网络通信架构——ADCOCA(Application-Driven and Cross-layer Opti mized Communication Architecture)。理论分析表明,ADCOCA改善了无线传感器网络通信的能量有效性,延长了网络的生命周期,推动了无线传感器网络应用的普及。

Wireless sensor nodes are generally battery-powered. To meet the requirement that wireless sen- sor networks （WSNs） should work for months or years, we should improve the energy efficiency of WSNs, especially that of the communication module, which contributes most of the energy consumption. Systematically discussed the state of the art of the research on energy-efficient communications in WSNs. And then designed an application-driven and cross-layer optimized communication architecture （ADCOCA） for WSNs, based on the power dissipation characteristics of the communication module of a wireless sensor node. The theoretic analysis indicates that ADCOCA improves the energy efficiency of communications, then prolongs the lifetime of the whole network, and propels the development of WSNs.