Scalable internet of things network design using multi-hop IEEE 802.11ah

Nurzaman Ahmed () and Md. Iftekhar Hussain ()
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Nurzaman Ahmed: North-Eastern Hill University
Md. Iftekhar Hussain: North-Eastern Hill University

Telecommunication Systems: Modelling, Analysis, Design and Management, 2021, vol. 78, issue 4, No 6, 577-588

Abstract: Abstract The emerging IEEE 802.11ah is a promising communication standard for large-scale networks particularly the Internet of Things (IoT). The single-channel-based centralized channel access mechanism employed in 802.11ah does not scale well in such networks and leads to poor data reception quality. In this paper, we propose an Enhanced and Scalable Medium Access Control (ES-MAC) protocol, which employs multi-band sectorization and dynamic load balancing. These features facilitate multi-hop communication more efficiently and enhance network capacity. Traffic congestion issues prevailing around the access point node due to the large volume of uplink traffic is mitigated by allowing simultaneous transmission using multiple orthogonal channels and sectors. Simulation and analytical results establish the essence of the novel protocol by showing significant improvements in terms of throughput and average packet delay over the existing schemes. The proposed network architecture improves throughput and delay performance up to 150% and 100% respectively compared to the relevant schemes.

Keywords: IEEE 802.11ah; Sub-1 GHz; Restricted access window (RAW); Internet of things (IoT); M2M communication; Relay AP (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s11235-021-00832-8

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