Timing-sync protocol for sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
The flooding time synchronization protocol
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Fine-grained network time synchronization using reference broadcasts
OSDI '02 Proceedings of the 5th symposium on Operating systems design and implementationCopyright restrictions prevent ACM from being able to make the PDFs for this conference available for downloading
Accuracy-Driven Synchronization Protocol
SENSORCOMM '08 Proceedings of the 2008 Second International Conference on Sensor Technologies and Applications
Time synchronization in sensor networks: a survey
IEEE Network: The Magazine of Global Internetworking
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Sensor networks applications often involve the collaboration between sensor nodes, thus requiring a time-synchronization service able to provide a common timescale. This paper describes the implementation of the Accuracy-Driven Synchronization Protocol (ADSP) on real sensor nodes. ADSP is a time-synchronization algorithm, specifically developed for Wireless Sensor Networks (WSNs). It offers customizable accuracy levels by adopting a novel method to handle the transmission-to-reception time delays. ADSP is conveniently implemented on sensor nodes, requiring light-computation and low-power consumption. In the presented implementation, we show that ADSP can provide time synchronization accuracy in the micro-second scale. Implementation details of ADSP along with the algorithm validation are described for MICA2 and TelosB platforms on both TinyOS 1.x and TinyOS 2.x for single-hop and multi-hop deployment. ADSP performance is demonstrated and compared to the previous time-synchronization approaches.