A Stop-Wait Collaborative Charging Scheme for Mobile Wireless Rechargeable Sensor Networks

Abstract

The mobile wireless sensor networks have been used in many popular applications. However, the limited battery capacity of sensor nodes is still one of the key issues in wireless sensor networks (WSNs). The new and effective way is to use wireless energy transfer and rechargeable lithium batteries to solve this problem. To improve the charging energy effectiveness, we introduce a stop-wait scheme that allows the mobile charger (MC) to stop and wait to charge the coming mobile sensors. The lifetime of the WSNs is considered to assure that each sensor will not run out of energy. The simulation experiment shows that our algorithm improves the energy usage effectiveness.