Title: Clock synchronisation method for wireless sensor networks based on phase compensation

Authors: Bin Liu

Addresses: Library, Hunan College of Information, ChangSha, 410000, China

Abstract: Aiming at the problems of large phase estimation error and large synchronisation time overhead in clock synchronisation method, a clock synchronisation method for wireless sensor networks (WSN) based on phase compensation is proposed. Firstly, the synchronisation deviation value is determined by calculating the broadcast information frame of general nodes, and the instability factor and clock synchronisation delay are extracted to determine the influencing factors of clock synchronisation. Then, the wireless sensor is set as an undirected graph, and the updated node state is consistent through the linear model. Finally, the local clock change frequency is determined by the least square method, the clock synchronisation compensation estimator is determined by the calculation of slope, the updated network topology of nodes is replaced, and the bounded condition of phase compensation is set to complete clock synchronisation. The experimental results show that the proposed method has small phase estimation error and small synchronisation time overhead.

Keywords: phase compensation; WSN; clock synchronisation; phase estimation; linear model; least square method.

DOI: 10.1504/IJSCC.2024.135178

International Journal of Systems, Control and Communications, 2024 Vol.15 No.1, pp.36 - 47

Received: 02 Nov 2022
Accepted: 06 Apr 2023

Published online: 01 Dec 2023 *

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