2013
DOI: 10.4236/wsn.2013.510021
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On Energy-Efficient Time Synchronization for Wireless Sensors under Large-Scale and Small-Scale Fading Effects

Abstract: In this work, the existing trade-off between time synchronization quality and energy is studied for both large-scale and small-scale fading wireless channels. We analyze the clock offset estimation problem using one-way, two-way and N-way message exchange mechanisms affected by Gaussian and exponentially distributed impairments. Our main contribution is a general relationship between the total energy required for synchronizing a wireless sensor network and the clock offset estimation error by means of the tran… Show more

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Cited by 2 publications
(3 citation statements)
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“…Since the energy consumption depends on how long and how frequently each sensor node executes the clock synchronization process, the energy efficiency of synchronous clock synchronization protocols can be improved further by reducing the duration of synchronization phase and increasing the synchronization interval as far as possible. Besides, energy efficiency is also improved by minimizing the number of messages sent and received at each sensor node during each synchronization phase [30,31].…”
Section: Global Objective Featuresmentioning
confidence: 99%
“…Since the energy consumption depends on how long and how frequently each sensor node executes the clock synchronization process, the energy efficiency of synchronous clock synchronization protocols can be improved further by reducing the duration of synchronization phase and increasing the synchronization interval as far as possible. Besides, energy efficiency is also improved by minimizing the number of messages sent and received at each sensor node during each synchronization phase [30,31].…”
Section: Global Objective Featuresmentioning
confidence: 99%
“…The derivative (the rate of variation) of the relative clock offset gives the relative clock skew. Protocols have been proposed for synchronization in more complex network structures [12,13]. Practically speaking, a pair of nodes are synchronized by estimating the relative clock offset and relative clock skew between the nodes.…”
Section: Introductionmentioning
confidence: 99%
“…A Bayesian approach of time synchronization for a complex network model has been proposed in [11]. Protocols have been proposed for synchronization in more complex network structures [12,13]. Nice reviews of the recent approaches for time synchronization under different protocols are given in [14,15].…”
Section: Introductionmentioning
confidence: 99%