An Enhanced IEEE 1588 Time Synchronization Algorithm for Asymmetric Communication Link using Block Burst Transmission

IEEE 1588 is a standard to synchronize independent clocks running on separate nodes of a distributed measurement and control system. In IP based cellular network, it is considered as a key technology to synchronize base stations. Especially, interests for the low-cost and very-small home cellular ba...

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Bibliographic Details
Published in:IEEE communications letters 2008-09, Vol.12 (9), p.687-689
Main Author: LEE, Sungwon
Format: Article
Language:English
Subjects:
Algorithms
Applied sciences
Asymmetry
Base stations
Cellular
Cellular communication
Cellular networks
Clocks
Communication system control
Control systems
Distributed control
Equipments and installations
Exact sciences and technology
Femtocell
IEEE 1588
Land mobile radio cellular systems
Links
Master-slave
Mathematical analysis
Measurement standards
Mobile radiocommunication systems
Radiocommunications
Switching and signalling
Synchronism
Synchronization
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
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Summary:IEEE 1588 is a standard to synchronize independent clocks running on separate nodes of a distributed measurement and control system. In IP based cellular network, it is considered as a key technology to synchronize base stations. Especially, interests for the low-cost and very-small home cellular base station called the Femtocell is increasing, and it is connected to the cellular core network using an asymmetric communication link such as xDSL. However, the conventional IEEE 1588 synchronization algorithm assumes symmetrical links, and makes errors for asymmetric links for the calculation of the time difference between the master clock (a clock source) and the slave clock (a clock consumer). We propose an enhanced synchronization algorithm to calculate the asymmetric ratio of the communication link, and the proposed algorithm enhances an accuracy of the time synchronization.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2008.080824