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Battery‐friendly scheduling policy in MAC layer for WBAN data packets transmission
Author(s) -
Sun Fangmin,
Yi Chenfu,
Li Ye
Publication year - 2017
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2016.0974
Subject(s) - computer science , network packet , battery (electricity) , computer network , wireless sensor network , transmission (telecommunications) , scheduling (production processes) , data transmission , engineering , telecommunications , power (physics) , operations management , physics , quantum mechanics
Energy consumption is a critical issue for battery‐powered sensor nodes in wireless body area networks (WBANs). Many energy‐efficient medium access control (MAC) protocols have been proposed and investigated for energy‐constrained WBANs. These protocols assume that the battery has an ideal linear model. However, in practical application, the battery model is non‐linear. When the lithium (Li)‐ion battery experiences an idle period, the unavailable charge can be transferred to the available charge and the battery lifetime can be extended. In this study, the authors propose a battery‐friendly MAC (BFMAC) protocol based on the non‐linear electrochemical properties of the Li‐ion battery. A remaining charge factor (RCF) of the battery is introduced. On the basis of the RCF, a combined packets transmission scheme is designed to maximise the lifetime of the battery‐powered sensor nodes. The performance of the BFMAC is evaluated through simulation. The results show that the presented BFMAC and the joint packets transmission scheme prolonged the network lifetime by 25.45% over the sensor‐MAC and 33.61% over the IEEE 802.15.4 non‐beacon‐enabled MAC.

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