Near-Optimal Velocity Control for Mobile Charging in Wireless Rechargeable Sensor Networks

 Near-Optimal Velocity Control for Mobile Charging in Wireless Rechargeable Sensor Networks

 Limited energy in each node is the major design constraint in wireless sensor networks (WSNs). To overcome this limit, wireless rechargeable sensor networks (WRSNs) have been proposed and studied extensively over the last few years. In a typical WRSN, batteries in sensor nodes can be replenished by a mobile charger that periodically travels along a certain trajectory in the sensing area. To maximize the charged energy in sensor nodes, one fundamental question is how to control the traveling velocity of the charger.