Reliable Time Synchronization Protocol in Sensor Networks 


Vol. 31,  No. 3, pp. 274-281, Mar.  2006


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  Abstract

Sensor network applications need synchronized time extremely such as object tracking, consistent state updates, duplicate detection, and temporal order delivery. This paper describes reliable time synchronization protocol (RTSP) for wireless sensor networks. In the proposed method, synchronization error is decreased by creating hierarchical tree with lower depth and reliability is improved by maintaining and updating information of candidate parent nodes. The RTSP reduces recovery time and communication overheads comparing to TPSN when there are topology changes owing to moving of nodes, running out of energy and physical crashes. Simulation results show that RTSP has about 20% better performance than TPSN in synchronization accuracy. And the number of message in the RTSP is 20%~60% lower than that in the TPSN when nodes are failed in the network. In case of different transmission range of nodes, the communication overhead in the RTSP is reduced up to 40% than that in the TPSN at the maximum.

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  Cite this article

[IEEE Style]

S. Hwang, Y. Jung, Y. Baek, "Reliable Time Synchronization Protocol in Sensor Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 3, pp. 274-281, 2006. DOI: .

[ACM Style]

Soyoung Hwang, Yeonsu Jung, and Yunju Baek. 2006. Reliable Time Synchronization Protocol in Sensor Networks. The Journal of Korean Institute of Communications and Information Sciences, 31, 3, (2006), 274-281. DOI: .

[KICS Style]

Soyoung Hwang, Yeonsu Jung, Yunju Baek, "Reliable Time Synchronization Protocol in Sensor Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 3, pp. 274-281, 3. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880