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Sensors 2018, 18(11), 3781; https://doi.org/10.3390/s18113781

Energy-Efficient Medium Access Control Protocols for Cognitive Radio Sensor Networks: A Comparative Survey

Department of Computer Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea
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Received: 30 July 2018 / Revised: 28 October 2018 / Accepted: 1 November 2018 / Published: 5 November 2018
(This article belongs to the Section Sensor Networks)
PDF [1087 KB, uploaded 5 November 2018]

Abstract

The increase of application areas in wireless sensor networks demands novel solutions in terms of energy consumption and radio frequency management. Cognitive radio sensor networks (CRSNs) are key for ensuring efficient spectrum management, by making it possible to use the unused licensed frequency spectrum together with the unlicensed frequency spectrum. Sensor nodes powered by energy-constrained batteries necessarily require energy-efficient protocols at the routing and medium access control (MAC) layers. In CRSNs, energy efficiency is more important because the sensor nodes consume additional energy for spectrum sensing and management. To the best of authors’ knowledge, there is no survey on “energy-efficient” MAC protocols for CRSNs in the literature, even though a conceptual review on MAC protocols for CRSNs was presented at a conference recently. In this paper, energy-efficient MAC protocols for CRSNs are extensively surveyed and qualitatively compared. Open issues, and research challenges in the design of MAC protocols for CRSNs, are also discussed.
Keywords: wireless sensor network; cognitive radio; cognitive radio sensor network; medium access control; network protocol; energy efficiency; network lifetime wireless sensor network; cognitive radio; cognitive radio sensor network; medium access control; network protocol; energy efficiency; network lifetime
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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Luitel, S.; Moh, S. Energy-Efficient Medium Access Control Protocols for Cognitive Radio Sensor Networks: A Comparative Survey. Sensors 2018, 18, 3781.

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