Context-Aware Optimization for Energy-Efficient and QoS Wireless Body Area Networks with Human Dynamics

Abstract

In the consideration of the context of human body dynamics, we propose an energy-aware and quality-of-service (QoS) method for wireless body area networks (WBAN). This method exploits the characteristics of physical (PHY) layer based on narrow band signaling with M-PSK modulation and low power micro sensor transceiver. It improves energy efficiency of both receiver and transmitter front-end components while satisfying the QoS metrics in accordance with link quality due to human posture changes or movements. It can meet various QoS requirements of each sensor, improve bandwidth utilization and reduce energy consumption. This method saves an average of 6.2% of energy consumption over the TPC and LA-based methods at a power of -25dBm.