Performance of the MAC protocol in wireless recharging under E-limited scheduling

Recharging through radio frequency (RF) pulses is a promising approach to enhance the lifetime of wireless sensor networks (WSNs). In this paper, we propose a polling-based MAC protocol with round robin scheduling under E-limited service policy. In this model, the WSN coordinator sends a recharging pulse upon reception of a recharging request from one of the nodes. As both recharging and data communication use the same RF band, the latter process is interrupted by the former. A probabilistic model for energy depletion within the proposed MAC along with queueing delay model is evaluated as well. Later, we assess the behavior of time interval between two consecutive recharging events and packet waiting time under varying network size and traffic load.