Open AccessA MAC PROTOCOL FOR ENERGY EFFICIENCY AND FAST EMERGENCY MEDICAL JUDGMENT IN WIRELESS BODY SENSOR NETWORKS
Author(s) -
Hye Yun Kim,
Seong Cheol Kim
Publication year - 2021
Publication title -
xi'nan jiaotong daxue xuebao
Language(s) - English
Resource type - Journals
ISSN - 0258-2724
DOI - 10.35741/issn.0258-2724.56.5.10
Subject(s) - computer science , protocol (science) , wireless sensor network , computer network , reservation , frame (networking) , transmission (telecommunications) , data transmission , set (abstract data type) , wireless , energy (signal processing) , energy consumption , efficient energy use , real time computing , medicine , telecommunications , engineering , statistics , alternative medicine , mathematics , pathology , programming language , electrical engineering
Emergency data collected from sensor nodes widely distributed in wireless body sensor networks (WBSNs) are delivered to medical staff as quickly as possible, so patients’ lives can be saved through appropriate actions and treatments. However, relevant data and vital data may be required for appropriate actions by the medical staff. Therefore, all these data must be properly delivered to the medical staff within the set time. In this paper, we propose a MAC protocol with a reservation function and an operation frame extension function to extend the overall network lifetime by reducing the energy consumption of given sensor nodes and quickly deliver information to medical systems in case of emergency. This MAC protocol makes it possible to achieve fast transmission of related data by utilizing the related-priority slots. As a result of the experiment, the transmission delay was reduced by about 12.5%, and the lifetime was increased by approximately 19% over the existing MAC protocol. It also can be seen that the proposed MAC protocol works well in an environment where emergency events often occur.