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Design and Implementation of PTP Gateway to Extend IEEE 1588 to Zigbee networks  

Cho, Hyun-Tae (부산대학교 컴퓨터공학과)
Jung, Yeon-Su (부산대학교 컴퓨터공학과)
Lee, Seung-Woo (한국전자통신연구원)
Jin, Young-Woo (부산대학교 컴퓨터공학과)
Baek, Yun-Ju (부산대학교 컴퓨터공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.12A, 2009 , pp. 971-981 More about this Journal
Abstract
The coordination of distributed entities and events requires time synchronization. Precision time synchronization enables a variety of extensions of applications and provides much accurate information. The IEEE 1588 precision time protocol (PTP) provides a standard method to synchronize devices in a network. This paper deals with the design and implementation of a PTP gateway to extend IEEE 1588 to Zigbee networks. The PTP gateway can not only extend IEEE 1588 to Zigbee networks but also share the same time reference using IEEE 1588 between two or more Zigbee networks. This paper also presents experiments and performance evaluation of time synchronization using the PTP gateway. Our result established a method for nodes in a network to maintain their clocks to within a 300 nanosecond offset from the reference clock of a master node via Ethernet.
Keywords
IEEE 1588; precision time protocol; clock synchronization; time synchronization;
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