无线传感器网络自适应功率调整机制研究

Adaptive power adjustment mechanism for wireless sensor networks

无线传感器网络功率调整技术对于WSN节点的能量效率、生存时间、丢包率等性能均有显著影响,是其实用化的重要支撑技术。现提出了一种适用于无线传感器网络的自适应功率调整机制,只需要利用节点间的接收信号强度指示(RSSI)值,通过动态调整终端节点的功率值可以获得相对合适的发射功率,从而降低终端节点的能耗,可以适当延长节点的生存时间。实验结果证实了所提方法的有效性。

Power control techniques for wireless sensor networks are significant for WSN nodes＇ energy efficiency, survival time, packet loss rate and etc. It is one of the supporting technologies for the deployment of wireless sensor networks. This paper presents a wireless sensor network for adaptive power adjustment mechanism between the nodes only need to use the received signal strength indication （RSSI） value by dynamically adjusting the power value of terminal nodes can be obtained relatively appropriate transmit power, thus reduce the energy consumption of the terminal nodes, the nodes can be extended survival time. The experimental results demonstrate the effectiveness of the proposed method.