Title: Low-delay fair-reliability scheduling in multi-hop IEEE802.15.4e time synchronised channel hopping networks

Authors: Junhua Zhang; Yuanyi Wang; Zhenqian Wu

Addresses: College of Science and Technology, Ningbo University, Ningbo, ZJ, 315300, China ' College of Science and Technology, Ningbo University, Ningbo, ZJ, 315300, China ' College of Science and Technology, Ningbo University, Ningbo, ZJ, 315300, China

Abstract: IEEE802.15.4e is the latest generation of high-reliability, low-power medium access control protocols. As part of IEEE802.15.4e, time synchronised channel hopping (TSCH) provides support for multi-hop and multi-channel communications. IEEE802.15.4e only defines when a schedule is executed; it does not specify a concrete resource schedule strategy. In this study, an IEEE802.15.4e TSCH scheduling algorithm called fair reliability scheduling algorithm (FRESA) is proposed to focus on both less delay and fair reliability. Through leaf node prior and multiple nodes sharing the same resource, there is less delay to transmit messages. Balancing the assignment of different qualities of channel offset guarantees fair reliability in message transmission. We design two strategies to ensure fair reliability, one based on per Link and the other based on per Path, and then accordingly divide our algorithm into FRESA-L and FRESA-P. Simulation results demonstrate our algorithm's performance. We also observe that FRESA-P can achieve higher reliability than FRESA-L.

Keywords: IEEE802.15.4e; TSCH; time synchronised channel hopping; WSN; wireless sensor network; industrial internet of things; fair reliability; FRESA.

DOI: 10.1504/IJSNET.2021.118870

International Journal of Sensor Networks, 2021 Vol.37 No.3, pp.148 - 158

Received: 03 Aug 2020
Accepted: 26 Aug 2020

Published online: 09 Nov 2021 *

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