Low Overhead Minimum Variance Time Synchronization for Time-Sensitive Wireless Sensor Networks

Zhian Jia; Dongliang Cui; Xuewu Dai; Zhi-Wei Liu; Shuxin Liu; Tianyou Chai

doi:10.1109/tase.2024.3419142

Low Overhead Minimum Variance Time Synchronization for Time-Sensitive Wireless Sensor Networks

Zhian Jia, Dongliang Cui^*, Xuewu Dai^*, Zhi-Wei Liu, Shuxin Liu, Tianyou Chai

^*Corresponding author for this work

Mathematics, Physics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Targeting to improve the time synchronization accuracy of multi-hop Time-Sensitive Wireless Sensor Networks (TS-WSNs) for mission-critical industrial automation applications, a Minimum Variance Time Synchronization (MVTS) algorithm utilizing the concept of Packet-Coupled Oscillators (PkCOs) is proposed. This MVTS algorithm utlizes an output feedback approach to mitigate the impact of communication noise on the accumulation of synchronization errors. In addition, a Time-Division Multiple Access (TDMA) packet-exchange superframe is introduced to achieve efficient and low-overhead time synchronization. The optimal gain matrix of the MVTS algorithm is obtained by the Linear Matrix Inequality (LMI) optimization with theoretic analysis. The proposed MVTS algorithm is evaluated by both simulation and experiments on an IEEE 802.15.4 hardware testbed. The experimental results show that the proposed algorithm can effectively reduce the growth rate of clock offset along multi-hop nodes and improve the time synchronization accuracy of the TS-WSNs.

Original language	English
Pages (from-to)	1-11
Number of pages	11
Journal	IEEE Transactions on Automation Science and Engineering
Early online date	1 Jul 2024
DOIs	https://doi.org/10.1109/tase.2024.3419142
Publication status	E-pub ahead of print - 1 Jul 2024

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10.1109/tase.2024.3419142

Cite this

@article{264fcb52fadc454d85bc15ee6bc94fb0,

title = "Low Overhead Minimum Variance Time Synchronization for Time-Sensitive Wireless Sensor Networks",

abstract = "Targeting to improve the time synchronization accuracy of multi-hop Time-Sensitive Wireless Sensor Networks (TS-WSNs) for mission-critical industrial automation applications, a Minimum Variance Time Synchronization (MVTS) algorithm utilizing the concept of Packet-Coupled Oscillators (PkCOs) is proposed. This MVTS algorithm utlizes an output feedback approach to mitigate the impact of communication noise on the accumulation of synchronization errors. In addition, a Time-Division Multiple Access (TDMA) packet-exchange superframe is introduced to achieve efficient and low-overhead time synchronization. The optimal gain matrix of the MVTS algorithm is obtained by the Linear Matrix Inequality (LMI) optimization with theoretic analysis. The proposed MVTS algorithm is evaluated by both simulation and experiments on an IEEE 802.15.4 hardware testbed. The experimental results show that the proposed algorithm can effectively reduce the growth rate of clock offset along multi-hop nodes and improve the time synchronization accuracy of the TS-WSNs.",

author = "Zhian Jia and Dongliang Cui and Xuewu Dai and Zhi-Wei Liu and Shuxin Liu and Tianyou Chai",

year = "2024",

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doi = "10.1109/tase.2024.3419142",

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T1 - Low Overhead Minimum Variance Time Synchronization for Time-Sensitive Wireless Sensor Networks

AU - Jia, Zhian

AU - Cui, Dongliang

AU - Dai, Xuewu

AU - Liu, Zhi-Wei

AU - Liu, Shuxin

AU - Chai, Tianyou

PY - 2024/7/1

Y1 - 2024/7/1

N2 - Targeting to improve the time synchronization accuracy of multi-hop Time-Sensitive Wireless Sensor Networks (TS-WSNs) for mission-critical industrial automation applications, a Minimum Variance Time Synchronization (MVTS) algorithm utilizing the concept of Packet-Coupled Oscillators (PkCOs) is proposed. This MVTS algorithm utlizes an output feedback approach to mitigate the impact of communication noise on the accumulation of synchronization errors. In addition, a Time-Division Multiple Access (TDMA) packet-exchange superframe is introduced to achieve efficient and low-overhead time synchronization. The optimal gain matrix of the MVTS algorithm is obtained by the Linear Matrix Inequality (LMI) optimization with theoretic analysis. The proposed MVTS algorithm is evaluated by both simulation and experiments on an IEEE 802.15.4 hardware testbed. The experimental results show that the proposed algorithm can effectively reduce the growth rate of clock offset along multi-hop nodes and improve the time synchronization accuracy of the TS-WSNs.

AB - Targeting to improve the time synchronization accuracy of multi-hop Time-Sensitive Wireless Sensor Networks (TS-WSNs) for mission-critical industrial automation applications, a Minimum Variance Time Synchronization (MVTS) algorithm utilizing the concept of Packet-Coupled Oscillators (PkCOs) is proposed. This MVTS algorithm utlizes an output feedback approach to mitigate the impact of communication noise on the accumulation of synchronization errors. In addition, a Time-Division Multiple Access (TDMA) packet-exchange superframe is introduced to achieve efficient and low-overhead time synchronization. The optimal gain matrix of the MVTS algorithm is obtained by the Linear Matrix Inequality (LMI) optimization with theoretic analysis. The proposed MVTS algorithm is evaluated by both simulation and experiments on an IEEE 802.15.4 hardware testbed. The experimental results show that the proposed algorithm can effectively reduce the growth rate of clock offset along multi-hop nodes and improve the time synchronization accuracy of the TS-WSNs.

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