一种动态传感器网络中的功率控制方法

Power Control Method for Dynamical Sensor Networks

已经提出的传感器网络中的功率控制方法大多针对静态的传感器网络,不一定适用于动态的传感器网络.为保证传感器动态加入或者退出时网络中所有传感器仍然能同时发送数据,以所有传感器端的信干比高于某个阈值为目标,提出一种动态传感器网络中的功率控制方法.考虑了传感器依次加入、同时加入、依次退出和同时退出4种情况.仿真结果和理论结果相符,证明了提出的功率控制方法的有效性.

Existing power control methods for sensor networks mainly focus on static sensor networks,and may not be suitable for dynamical sensor networks.In this paper,to guarantee that all sensors in the network can send data simultaneously when sensors join or leave the network dynamically,a power control method is proposed for dynamical sensor networks,which makes the signal to interference plus noise ratio（SINR） of each sensor above a threshold.The cases of gradually joining,simultaneously joining,gradually leaving and simultaneously leaving are considered.Simulation results coincide with the theoretical ones and demonstrate the effectiveness of the proposed power control method.