A Review of Channel Access Techniques in Wireless Body Area Network

Wireless Body Area Network (WBAN) is an excellent technology for chronic healthcare monitoring applications. In which, sensor nodes are connected wirelessly in, on or near the human body and also responsible for Data Collection, Data Processing and Data Transmission. Sensor nodes are generally powered by small batteries with sturdily restricted energy resources, so minimizing the energy consumption of each sensor node and elongate the life time are the major concern in WBAN. The Channel Access layer performs a great role in determining the Quality of Service (QoS). This paper aims to draw attention towards the recent challenges exist in WBAN MAC protocols concerning energy consumption and delay. Then, discoursed about some of the open research problems with their possible solutions and the future enhancements. Finally, this paper is concluded by deliberating the challenging issues in WBAN.