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arXiv · 0704.3890

An algorithm for clock synchronization with the gradient property in sensor networks

Rodolfo M. Pussente·Valmir C. Barbosa
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Abstract

We introduce a distributed algorithm for clock synchronization in sensor networks. Our algorithm assumes that nodes in the network only know their immediate neighborhoods and an upper bound on the network's diameter. Clock-synchronization messages are only sent as part of the communication, assumed reasonably frequent, that already takes place among nodes. The algorithm has the gradient property of [2], achieving an O(1) worst-case skew between the logical clocks of neighbors. As in the case of [3,8], the algorithm's actions are such that no constant lower bound exists on the rate at which logical clocks progress in time, and for this reason the lower bound of [2,5] that forbids constant skew between neighbors does not apply.

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Rodolfo M. Pussente, Valmir C. Barbosa. 2007-04-30. An algorithm for clock synchronization with the gradient property in sensor networks. https://doi.org/10.1016/j.jpdc.2008.11.001

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