Journal ArticleDOI
Time synchronization methods for wireless sensor networks: A survey
TLDR
In the paper, base techniques used in the existing time synchronization schemes are analyzed; models of local clock behavior and models of interaction of the network devices are described; classification of the synchronization problems is presented; and a survey of the existing approaches to synchronization of time in sensor networks is given.Abstract:
Wireless sensor networks consist of many nodes that collect real-world data, process them, and transmit the data by radio. Wireless sensor networks represent a new, rapidly developing direction in the field of organization of computer networks of free configuration. Sensor networks are used for monitoring a parameter field, where it is often required to fix time of an event with high accuracy. High accuracy of local clocks is also necessary for operation of network protocols (for energy-saving purposes, the nodes spend most of the time in the sleeping mode and communicate only occasionally). In the paper, base techniques used in the existing time synchronization schemes are analyzed; models of local clock behavior and models of interaction of the network devices are described; classification of the synchronization problems is presented; and a survey of the existing approaches to synchronization of time in sensor networks is given.read more
Citations
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Journal ArticleDOI
Energy conservation in wireless sensor networks: A survey
TL;DR: This paper breaks down the energy consumption for the components of a typical sensor node, and discusses the main directions to energy conservation in WSNs, and presents a systematic and comprehensive taxonomy of the energy conservation schemes.
Average TimeSynch: a consensus-basedprotocol for clock synchronization in wireless sensor networks
Luca Schenato,Federico Fiorentin +1 more
TL;DR: A rigorous proof of convergence to global synchronization is provided in the absence of process and measurement noise and of communication delay, and its effectiveness is shown through a number of experiments performed on a real wireless sensor network.
Journal ArticleDOI
Time Synchronization in WSNs: A Maximum-Value-Based Consensus Approach
TL;DR: The weighted maximum time synchronization (WMTS), which is able to counteract the impact of random communication delays, is proposed, which can synchronize the clock skew completely in expectation and achieve acceptable synchronization accuracy.
Journal ArticleDOI
Average TimeSynch
Luca Schenato,Federico Fiorentin +1 more
TL;DR: In this paper, a consensus-based protocol, referred to as Average TimeSync (ATS), is proposed for synchronizing the clocks of a wireless sensor network based on a cascade of two consensus algorithms, whose main task is to average local information.
Proceedings ArticleDOI
Time synchronization in WSNs: A maximum value based consensus approach
TL;DR: A rigorous proof of convergence to global synchronization and the upper bound of the convergence time is given and the main advantages of the protocol include a faster convergence speed such that the synchronization can be completed in a finite time.
References
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Numerical recipes in C
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Journal Article
An Energy-Efficient MAC Protocol for Wireless Sensor Networks
TL;DR: S-MAC as discussed by the authors is a medium access control protocol designed for wireless sensor networks, which uses three novel techniques to reduce energy consumption and support self-configuration, including virtual clusters to auto-sync on sleep schedules.
Proceedings ArticleDOI
An energy-efficient MAC protocol for wireless sensor networks
TL;DR: S-MAC uses three novel techniques to reduce energy consumption and support self-configuration, and applies message passing to reduce contention latency for sensor-network applications that require store-and-forward processing as data move through the network.
Journal ArticleDOI
Fine-grained network time synchronization using reference broadcasts
TL;DR: Reference Broadcast Synchronization (RBS) as discussed by the authors is a scheme in which nodes send reference beacons to their neighbors using physical-layer broadcasts, and receivers use their arrival time as a point of reference for comparing their clocks.