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Weighted average based improved clock synchronisation protocols for wireless sensor networks

Swain, Amulya Ratna and Hansdah, RC (2016) Weighted average based improved clock synchronisation protocols for wireless sensor networks. In: INTERNATIONAL JOURNAL OF SENSOR NETWORKS, 21 (1). pp. 27-39.

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Official URL: http://dx.doi.org/10.1504/IJSNET.2016.076856


The weighted average based clock synchronisation protocols for wireless sensor networks (WSNs), viz., energy efficient and fault-tolerant clock synchronisation (EFCS) protocol, weighted average based internal clock synchronisation (WICS) protocol, and weighted average based external clock synchronisation (WECS) protocol, have several fault-tolerant properties including automatic interchangeability among these protocols, but a major problem with these protocols is that their synchronisation accuracy is not very high. In this paper, we propose a generic technique to improve the synchronisation accuracy in these three protocols. We also give a proof that the synchronisation error in the EFCS protocol is bounded. The improved protocols also make use of estimated drift rate to provide an accurate reading of time at any instant, and the logical time provided by these protocols is monotonic. The simulation and experimental studies clearly show that the average synchronisation error in the improved protocols is much less than that in the original protocols.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the INDERSCIENCE ENTERPRISES LTD, WORLD TRADE CENTER BLDG, 29 ROUTE DE PRE-BOIS, CASE POSTALE 856, CH-1215 GENEVA, SWITZERLAND
Keywords: clock synchronisation; internal clock synchronisation; external clock synchronisation; WSNs; wireless sensor networks.
Department/Centre: Division of Electrical Sciences > Computer Science & Automation
Date Deposited: 05 Jul 2016 06:44
Last Modified: 05 Jul 2016 06:44
URI: http://eprints.iisc.ac.in/id/eprint/54162

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