On-Demand Recharge Scheduling Algorithm in Wireless Sensor Networks

In recent years, energy transfer technology provides a new opportunity for recharging the sensors using the mobile charger. Most of the studies proposed recharging algorithms using a single charger but overlooked the consideration of multiple chargers and cooperation between them. Therefore, this paper proposed an On-Demand Recharge Scheduling (ODRS) algorithm for multiple mobile chargers, aiming to improve the network surveillance quality (NSQ). In this paper, the network is partitioned into many subregions. One mobile charger is employed in each subregion to recharge the sensors based on the benefit of coverage quality (BCQ) obtained. In addition, there is cooperation between neighboring mobile chargers. Experiments are evaluated to show the achieved NSQ of the proposed ODRS algorithm.