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Open AccessArticle

WLAN Aware Cognitive Medium Access Control Protocol for IoT Applications

1
Department of Electrical and Computer Engineering, COMSATS University Islamabad, Islamabad 45550, Pakistan
2
Department of Computer Science, College of Computer Science and Engineering, Taibah University Madinah, Madina 42353, Saudi Arabia
3
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; https://doi.org/10.3390/fi12010011
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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MDPI and ACS Style

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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