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Open AccessArticle

SINR-Based MCS Level Adaptation in CSMA/CA Wireless Networks to Embrace IoT Devices

Department of General Studies, Hongik University, Seoul 04066, Korea
Symmetry 2017, 9(10), 236; https://doi.org/10.3390/sym9100236
Received: 20 September 2017 / Revised: 13 October 2017 / Accepted: 16 October 2017 / Published: 19 October 2017
(This article belongs to the Special Issue Advances in Future Internet and Industrial Internet of Things)
This paper presents an automatic modulation and coding scheme (MCS) level adaptation algorithm to embrace Internet of Things (IoT) devices by improving the area spectral efficiency of carrier-sense multiple access with collision avoidance (CSMA/CA) wireless networks. In the proposed algorithm, senders of CSMA/CA wireless networks use the signal to interference plus noise ratio of acknowledgment frames from their receivers to estimate channel statuses between the senders and the receivers. Using the estimated channel status of each receiver, senders control sending rates of traffic by adjusting MCS levels of packets destined for each receiver. We use Poisson point processes (PPPs) to model the locations of participating nodes (i.e., access points and wireless devices) in a given area. We evaluate the effectiveness of the proposed algorithm using an event-driven ns-2 simulator for various PPP densities of access points and wireless devices. View Full-Text
Keywords: Internet of Things; modulation and coding scheme; rate adaptation; carrier-sense multiple access with collision avoidance (CSMA/CA); IEEE 802.11; Poisson point processes Internet of Things; modulation and coding scheme; rate adaptation; carrier-sense multiple access with collision avoidance (CSMA/CA); IEEE 802.11; Poisson point processes
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Cho, S. SINR-Based MCS Level Adaptation in CSMA/CA Wireless Networks to Embrace IoT Devices. Symmetry 2017, 9, 236.

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