Fault Tolerant Clock Management Scheme in Sensor Networks 


Vol. 31,  No. 9, pp. 868-877, Sep.  2006


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  Abstract

Sensor network applications need synchronized time to the highest degree such as object tracking, consistent state updates, duplicate detection, and temporal order delivery. In addition, reliability issues and fault tolerance in sophisticated sensor networks have become a critical area of research today. In this paper, we proposed a fault tolerant clock management scheme in sensor networks considering two cases of fault model such as network faults and clock faults. The proposed scheme restricts the propagation of synchronization error when there are clock faults of nodes such as rapid fluctuation, severe changes in drift rate, and so on. In addition, it handles topology changes. Simulation results show that the proposed method has about 1.5~2.0 times better performance than TPSN in the presence of faults.

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  Cite this article

[IEEE Style]

S. Hwang and Y. Baek, "Fault Tolerant Clock Management Scheme in Sensor Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 9, pp. 868-877, 2006. DOI: .

[ACM Style]

Soyoung Hwang and Yunju Baek. 2006. Fault Tolerant Clock Management Scheme in Sensor Networks. The Journal of Korean Institute of Communications and Information Sciences, 31, 9, (2006), 868-877. DOI: .

[KICS Style]

Soyoung Hwang and Yunju Baek, "Fault Tolerant Clock Management Scheme in Sensor Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 9, pp. 868-877, 9. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880