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Open AccessArticle

WLAN Aware Cognitive Medium Access Control Protocol for IoT Applications

Department of Electrical and Computer Engineering, COMSATS University Islamabad, Islamabad 45550, Pakistan
Department of Computer Science, College of Computer Science and Engineering, Taibah University Madinah, Madina 42353, Saudi Arabia
Department of Computing and Mathematics, Manchester Metropolitan University, Manchester M15 6BH, UK
Authors to whom correspondence should be addressed.
Future Internet 2020, 12(1), 11;
Received: 4 December 2019 / Revised: 8 January 2020 / Accepted: 9 January 2020 / Published: 11 January 2020
(This article belongs to the Special Issue The Internet of Things for Smart Environments)
Internet of Things (IoT)-based devices consist of wireless sensor nodes that are battery-powered; thus, energy efficiency is a major issue. IEEE 802.15.4-compliant IoT devices operate in the unlicensed Industrial, Scientific, and Medical (ISM) band of 2.4 GHz and are subject to interference caused by high-powered IEEE 802.11-compliant Wireless Local Area Network (WLAN) users. This interference causes frequent packet drop and energy loss for IoT users. In this work, we propose a WLAN Aware Cognitive Medium Access Control (WAC-MAC) protocol for IoT users that uses techniques, such as energy detection based sensing, adaptive wake-up scheduling, and adaptive backoff, to reduce interference with the WSN and improve network lifetime of the IoT users. Results show that the proposed WAC-MAC achieves a higher packet reception rate and reduces the energy consumption of IoT nodes. View Full-Text
Keywords: wireless sensor networks; medium access control; IEEE 802.15.4; IEEE 802.11 wireless sensor networks; medium access control; IEEE 802.15.4; IEEE 802.11
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Ausaf, A.; Khan, M.Z.; Javed, M.A.; Bashir, A.K. WLAN Aware Cognitive Medium Access Control Protocol for IoT Applications. Future Internet 2020, 12, 11.

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