MAC-Based Physiological signal extraction approach for WBAN on Body Postures

Wireless sensor Networks has taken its extension in health monitoring, telemedicine, human activity monitoring etc, through Wireless Body area Networks. Mobility in such systems are challenging issue since the human body posture is time varying based on the daily activities. The sensor nodes deployed within the human body are connected by the Network proximity. QoS Parameter like reliability and throughput in the data extraction (or) acquisition process must be high, for the accuracy of the data used to provide appropriate treatment to the subject that is considered. MAC protocol is used to address the channelization issues that arise during data forwarding process in the network. This article also describes the disadvantages in the star topology arrangement of sensor nodes following the centralized approach and gives a comparative study on the decentralized pattern of sensor node deployment. Rare body postures exhibited by the human body are studied and the network traffic is also briefed.