无线传感器网络自适应功率控制策略

Adaptive Power Control Strategy for Wireless Sensor Networks

无线传感器网络功率控制技术对于网络的拓扑连通、能量效率、网络容量、吞吐量、实时性等性能均有显著影响,是其实用化的重要支撑技术。该文提出了一种适用于无线传感器网络的自适应功率控制策略APCS(Adaptive Power Control Strategy),该策略是只需要局部信息的分布式算法,通过调整路径损耗指数和功率控制参数可以获得性能极佳的目标拓扑,并能满足实时性和容错能力要求较高的应用场景。另外,该算法还采用了动态功率调整以保持网络的连通性,延长网络的生命周期。仿真结果证实了所提方法的有效性。

Power control techniques for wireless sensor networks are significant for network connectivity,energy efficiency,network capacity,throughput,real time performance and etc. It is one of the supporting technologies for the deployment of wireless sensor networks. This paper proposes an Adaptive Power Control Strategy （APCS） fitted for wireless sensor networks. It is a distributed algorithm based on local information which can obtain an excellent target topology by adjusting the path loss exponent and the power control parameter. It still can satisfy applications of a higher real-time performance and fault tolerance capacity. In addition,the proposed algorithm adopts a dynamic power control strategy to maintain the network connectivity which prolongs the network life time. Simulation results show the effectiveness of the proposed method.