PERA: Priority-Based Energy-Efficient Routing Algorithm for WBANs

Wireless body area network (WBAN) is designed to provide a variety of services for both medical and entertainment applications. This paper proposes a priority-based energy-efficient routing algorithm (PERA) for WBAN. In PERA, first priority is assigned for emergency data, second priority is used for on demand data traffic and third priority is utilized for periodic data delivery between sink and root nodes. We develop two non-linear programming based optimization models for WBAN. We use these computational models to analyze the effect of define constraints on network performance. We also use this problem formulation frame work to estimate the best possible performance of WBAN subjected to additionally design parameters such as the energy levels, topology, source rates, reception power, and number of nodes. We introduce these models for a fixed deployment strategy and examined that these optimization models show prickly changes in network throughput and network lifetime. MATLAB simulations of proposed routing protocol are performed for five different evaluation criterion in comparison with SIMPLE and M-ATTEMPT. The simulation results show that proposed routing algorithm achieves longer lifetime and more reliable than opponent routing protocols.