Wireless Information and Power Transfer Protocol with Three Nodes in Wireless Body Area Networks

Abstract

In recent years, Wireless Body Area Networks (WBANs) have become a hot research topic. The energy of each sensor node in WBAN is limited, but we would like to extend the life cycle of the sensor node. Therefore, in this work, we introduce energy harvesting technology to achieve sustainable operation of sensor nodes. In this paper, a Simultaneous Wireless Information and Power Transmission (SWIPT) model among three sensor nodes is proposed. A reasonable energy and information transmission algorithm is presented to minimize the outage probability, and the resources are allocated reasonably. Finally, numerical simulations demonstrate the reliability of the proposed algorithm to minimize the outage probability with energy harvesting. In addition, this paper analyzes the factors that can influence outage probabilities, such as energy harvesting rate, number of time slots, and confirms that both factors are negatively correlated with outage probability.