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Appl. Sci. 2018, 8(1), 92; https://doi.org/10.3390/app8010092

Emergency-Prioritized Asymmetric Protocol for Improving QoS of Energy-Constraint Wearable Device in Wireless Body Area Networks

1
Department of Information and Communications Engineering, Seowon University, 377-3 Musimseoro, Seowon-gu, Cheongju 28674, Chungbuk, Korea
2
School of Electronics Engineering, Chungbuk National University, Chungdae-ro 1, Seowon-Gu, Cheongju 28644, Chungbuk, Korea
*
Author to whom correspondence should be addressed.
Received: 6 December 2017 / Revised: 29 December 2017 / Accepted: 8 January 2018 / Published: 10 January 2018
(This article belongs to the Special Issue Wearable Wireless Devices)
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Abstract

Wireless Body Area Network (WBAN) is usually composed of nodes for contacting the body and coordinator for collecting the body data from the nodes. In this setup, the nodes are under constraint of the energy resource while the coordinator can be recharged and has relatively larger energy resource than the nodes. Therefore, the architecture mechanism of the networks must not allow the nodes to consume much energy. Primarily, Medium Access Control (MAC) protocols should be carefully designed to consider this issue, because the MAC layer has the key of the energy efficiency phenomenon (e.g., idle listening). Under these characteristics, we propose a new MAC protocol to satisfy the higher energy efficiency of nodes than coordinator by designing the asymmetrically energy-balanced model between nodes and coordinator. The proposed scheme loads the unavoidable energy consumption into the coordinator instead of the nodes to extend their lifetime. Additionally, the scheme also provides prioritization for the emergency data transmission with differentiated Quality of Service (QoS). For the evaluations, IEEE 802.15.6 was used for comparison. View Full-Text
Keywords: wireless body area networks; medium access control; energy-balanced model; energy efficiency; Quality of Service wireless body area networks; medium access control; energy-balanced model; energy efficiency; Quality of Service
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Lee, J.; Kim, S. Emergency-Prioritized Asymmetric Protocol for Improving QoS of Energy-Constraint Wearable Device in Wireless Body Area Networks. Appl. Sci. 2018, 8, 92.

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