Abstract

The application of Internet-of-Things (IoT) technology in modern healthcare environment has given rise to a new paradigm known as healthcare IoT. The wireless body area network (WBAN) is one of the basic building blocks of IoT-based healthcare system, comprising many wearable (on-body) and implant (in-body) sensors placed in or around patient body connected to a hub for physiological signal monitoring. In in-body sensor-based WBAN, guaranteeing quality-of-service and prolonging network lifetime are major impediments due to the sensor location and limited battery capacity. In this article, we propose a novel energy-efficient medium access control (MAC) protocol for IEEE 802.15.6 standard complaint in-body sensor-based WBAN. Typically, the in-body sensor-based WBAN communication is hub-initiated; however, in case of an emergency event, the in-body sensor node transmits an emergency frame arbitrarily without sensing the channel. This inadvertent in-body sensor-initiated transmission has a very high probability of collision with the ongoing hub-initiated transmission, and/or another in-body sensor-initiated emergency frame transmission. This results in emergency frame retransmission and consequently affects the node's energy consumption and lifetime. To alleviate this issue, we propose a modified superframe structure, in which separate access phases are introduced for the emergency event and regular event. In case of an emergency event, a novel emergency event handling scheme and a ranking and priority assignment protocol is proposed to detect and address the critical event of in-body sensors. To minimize the collision, a scheduled access mechanism is proposed according to the criticality of the node. Performance analysis of the proposed in-body sensor MAC is done in terms of latency and overall power consumption, in case of both emergency and regular events.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.