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Performance Analysis of Multiple-Hop Wireless Body Area Network  

Hiep, Pham Thanh (Le Quy Don Technical University)
Hoang, Nguyen Huy (Le Quy Don Technical University)
Kohno, Ryuji (school of Engineering, Yokohama National University)
Publication Information
Journal of Communications and Networks / v.17, no.4, 2015 , pp. 419-427 More about this Journal
Abstract
There have been increases in the elderly population worldwide, and this has been accompanied by rapid growth in the health-care market, as there is an ongoing need to monitor the health of individuals. Wireless body area networks (WBANs) consist of wireless sensors attached on or inside the human body to monitor vital health-related problems, e.g., electrocardiograms (ECGs), electroencephalograms (EEGs), and electronystagmograms (ENGs). With WBANs, patients' vital signs are recorded by each sensor and sent to a coordinator. However, because of obstructions by the human body, sensors cannot always send the data to the coordinator, requiring them to transmit at higher power. Therefore, we need to consider the lifetime of the sensors given their required transmit power. In the IEEE 802.15.6 standard, the transmission topology functions as a one-hop star plus one topology. In order to obtain a high throughput, we reduce the transmit power of the sensors and maintain equity for all sensors. We propose the multiple-hop transmission for WBANs based on the IEEE 802.15.6 carrier-sense multiple-access with collision avoidance (CSMA/CA) protocol. We calculate the throughput and variance of the transmit power by performing simulations, and we discuss the results obtained using the proposed theorems.
Keywords
Carrier-sense multiple-access with collision avoidance (CSMA/CA) based on IEEE 802.15.6; multiple-hop body area networks; system throughput; variance of transmit power;
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