Energy-Perceptive MAC for Wireless Power and Information Transfer

Energy harvesting technology using radio frequency signals in a wireless local area network is a promising way to provide energy with devices in a wireless network. In this letter, we propose a novel distributed medium access control (MAC) protocol for both wireless power transfer and wireless information transfer based on carrier sense multiple access with enhanced collision avoidance. In the proposed protocol, the power beacon adjusts the energy transmission opportunity according to the stations' energy level. The proposed MAC protocol improves data throughput and effectively provides energy to stations with minimal energy loss.