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Sensors 2017, 17(5), 1134; doi:10.3390/s17051134

Low Duty-Cycling MAC Protocol for Low Data-Rate Medical Wireless Body Area Networks

1
College of Computer Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
2
Shandong Provincial Key Laboratory of Computer Networks, Shandong Computer Science Center, National Supercomputer Center in Jinan, Jinan 250101, China
3
The Key Laboratory of Embedded System and Service Computing, Ministry of Education, Tongji University, Shanghai 200092, China
*
Author to whom correspondence should be addressed.
Academic Editors: Yunchuan Sun, Zhipeng Cai and Antonio Jara
Received: 28 March 2017 / Revised: 5 May 2017 / Accepted: 7 May 2017 / Published: 16 May 2017

Abstract

Wireless body area networks (WBANs) are severely energy constrained, and how to improve the energy efficiency so as to prolong the network lifetime as long as possible is one of the most important goals of WBAN research. Low data-rate WBANs are promising to cut down the energy consumption and extend the network lifetime. Considering the characteristics and demands of low data-rate WBANs, a low duty-cycling medium access control (MAC) protocol is specially designed for this kind of WBAN in this paper. Longer superframes are exploited to cut down the energy consumed on the transmissions and receptions of redundant beacon frames. Insertion time slots are embedded into the inactive part of a superframe to deliver the frames and satisfy the quality of service (QoS) requirements. The number of the data subsections in an insertion time slot can be adaptively adjusted so as to accommodate low data-rate WBANs with different traffic. Simulation results show that the proposed MAC protocol performs well under the condition of low data-rate monitoring traffic. View Full-Text
Keywords: wireless body area networks (WBANs); energy-efficient; MAC protocol; low data-rate; low duty-cycling wireless body area networks (WBANs); energy-efficient; MAC protocol; low data-rate; low duty-cycling
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zhang, C.; Wang, Y.; Liang, Y.; Shu, M.; Zhang, J.; Ni, L. Low Duty-Cycling MAC Protocol for Low Data-Rate Medical Wireless Body Area Networks. Sensors 2017, 17, 1134.

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