On Optimal Charger Positioning in Clustered RF-power Harvesting Wireless Sensor Networks

Abstract

Wireless charging brings forward some new principles in designing energy efficient networks. A number of energy transmitters are placed in all over the network to recharge power constrained nodes. Since a few only nodes can remarkably benefit from the transmitter power emission, we organize the nodes in clusters and we propose an efficient localized algorithm as well as a centralized one to compute the charger position such that the cluster lifetime is maximized. Simulation results are presented to show the effectiveness of the approaches.