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Reliability-Aware Clock Offset Tracking With Timestamp Validation in IEEE 1588 Networks | IEEE Journals & Magazine | IEEE Xplore

Reliability-Aware Clock Offset Tracking With Timestamp Validation in IEEE 1588 Networks


Abstract:

Precision clock synchronization is a prerequisite for distributed networks. IEEE 1588 Precision Time Protocol (PTP) specifies a synchronization mechanism for estimating a...Show More

Abstract:

Precision clock synchronization is a prerequisite for distributed networks. IEEE 1588 Precision Time Protocol (PTP) specifies a synchronization mechanism for estimating and adjusting clock parameters. However, accurate clock offset estimation for PTP is based on the assumption of symmetric path delays and accurate timestamping, which may not hold in reality. To resolve this issue, a reliable clock offset tracking scheme based on residual-aware augmented Kalman filter (RA2KF) is proposed, which is robust against unexpected path delay asymmetries and can smooth the effects of inaccurate time measurements. Numerical results demonstrate the validity of this tracking scheme.
Published in: IEEE Communications Letters ( Volume: 28, Issue: 4, April 2024)
Page(s): 922 - 926
Date of Publication: 02 February 2024

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