REER: Relay based energy efficient routing for intra body sensor network (Intra-WBSN)

Intra wireless body sensor network (Intra-WBSN) is typically a short range wireless health monitoring network, consists of wearable or implant bio-sensor nodes which collects the patient's physiological signals and forward to patient monitoring systems. Network lifetime maximization and energy efficiency of the network have significant attention for current research. Recently cost-function based multi-hop topology has been used to enhance the energy efficiency. In this paper we introduced relay based data routing scheme to enhance energy efficiency. Body sensor nodes (BSNs) forward their sensing data to body node coordinator (BNC) through relay node. Since relays are placed in the patient clothes they can be easily replaced or recharged which permits easier and effective health monitoring. The proposed data routing schemes provides better performance in terms of network stability, network life time, energy consumption and throughput in compared to contemporary routing schemes which is demonstrated by MATLAB simulation.