Proceedings ArticleDOI
Time Synchronization with Extended Clock Model for Wireless Sensor Networks
Liming He
- Vol. 2, pp 534-539
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TLDR
In the protocol, the clock offset is corrected continuously avoiding the time discontinuity which is a prevalent drawback of existing synchronization protocols and the bound-drift clock model is extended by considering both the absolute drift and the relative drift.Abstract:
Time synchronization is an essential problem for WSNs. The synchronization performance is mainly affected by two factors: the uncertainty in the message delay, and the clock drift. Most solutions on time synchronization in WSNs have concentrated on one of the two factors, and neglected the other. In this paper, we consider both of them and propose a novel time synchronization protocol for WSNs. In the protocol, we model the variation of the clock drift and develop algorithms to estimate and compensate the drift. Meanwhile, the clock offset is corrected continuously avoiding the time discontinuity which is a prevalent drawback of existing synchronization protocols. Additionally, we extend the bound-drift clock model by considering both the absolute drift and the relative drift. Mathematical analyses and simulations are presented in this paper, and verify the effectiveness of our synchronization protocol.read more
Citations
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Journal ArticleDOI
Experimental Characterization of Synchronization Protocols for Instrument Wireless Interface
TL;DR: This paper makes the first step toward the experimental characterization of a small-scale WSN implementing some of these protocols versus common wireless busses such as BT, Wi-Fi, and ZigBee.
Proceedings ArticleDOI
Experimental characterization of synchronization protocols for wireless networks
TL;DR: This paper makes a first step toward an experimental characterization of synchronization protocols that hold into account also influence factors which arise when commercial wireless communication busses as WiFi, BlueTooth (BT), ZigBee are adopted.
Proceedings ArticleDOI
A step forward the on-line minimization of the synchronization events in TPSN
TL;DR: An experimental approach to the optimization of synchronization protocols for wireless sensor networks by proposing that the sensor node be synchronized with the master node on the basis of two suitable figures of merit: the former takes into account the past synchronizations, whilst the latter depends on the residual error after the last synchronization.
Proceedings ArticleDOI
Time synchronization method among VANET devices
TL;DR: The proposed approach reduces synchronization error to that of less than 0.3 ms, which meets the accuracy requirement of VANET specification and can greatly reduce the frequency of handover performed by the high speed OBUs.
References
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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.
Proceedings ArticleDOI
Timing-sync protocol for sensor networks
TL;DR: It is argued that TPSN roughly gives a 2x better performance as compared to Reference Broadcast Synchronization (RBS) and verify this by implementing RBS on motes and use simulations to verify its accuracy over large-scale networks.
Journal ArticleDOI
Internet time synchronization: the network time protocol
TL;DR: The NTP synchronization system is described, along with performance data which show that timekeeping accuracy throughout most portions of the Internet can be ordinarily maintained to within a few milliseconds, even in cases of failure or disruption of clocks, time servers, or networks.
Journal ArticleDOI
Clock synchronization for wireless sensor networks: a survey
TL;DR: In this paper, a survey and evaluation of clock synchronization protocols based on a palette of factors such as precision, accuracy, cost, and complexity is presented, which can help developers either in choosing an existing synchronization protocol or in defining a new protocol that is best suited to the specific needs of a sensor network application.
Journal ArticleDOI
Time synchronization in sensor networks: a survey
Fikret Sivrikaya,Bülent Yener +1 more
TL;DR: The time synchronization problem and the need for synchronization in sensor networks is reviewed, then the basic synchronization methods explicitly designed and proposed for sensor networks are presented.
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