A Spatio-Temporal Non-Concurrent Data Gathering and Energy Replenishment in Wireless Rechargeable Sensor Networks (ST-NCDR)

Wireless rechargeable sensor networks (WRSNs) addressed the energy bottle-neck inherent in Wireless sensor Networks (WSN) by utilizing mobile chargers to travel and replenish the energy of nodes. Most WRSNs schemes operate by allowing simultaneous data gathering with energy recharging. This increases the storage and processing power requirements of the nodes and their overall design cost. A non-concurrent data gathering and energy replenishment in WRSNs named Spatio-Temporal Non-Concurrent Data gathering and energy Recharging (ST-NCDR) is hereby proposed to enable realistic deployment of WRSNs using low-cost sensors that can easily be implemented. Simulation results indicate that the developed scheme has a lower energy consumption of the mobile chargers (MCs) and also a higher average residual energy of nodes than a scheme that executes the two tasks simultaneously.