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
International Journal of Ad Hoc and Ubiquitous Computing
Adaptive Data Collection Strategies for Lifetime-Constrained Wireless Sensor Networks
IEEE Transactions on Parallel and Distributed Systems
An Event -Triggered Time Synchronization Scheme for Sensor Networks
CSEWORKSHOPS '08 Proceedings of the 2008 11th IEEE International Conference on Computational Science and Engineering - Workshops
Algorithms and Protocols for Wireless Sensor Networks
Algorithms and Protocols for Wireless Sensor Networks
Optimal clock synchronization in networks
Proceedings of the 7th ACM Conference on Embedded Networked Sensor Systems
Accurate clock models for simulating Wireless Sensor Networks
Proceedings of the 3rd International ICST Conference on Simulation Tools and Techniques
Secure time synchronization protocols for wireless sensor networks
IEEE Wireless Communications
Localization systems for wireless sensor networks
IEEE Wireless Communications
Long term and large scale time synchronization in wireless sensor networks
Computer Communications
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Time synchronization is a critical component in any wireless sensor network (WSN). In terms of energy consumption, on-demand time synchronization is better than continuous synchronization. However, currently existing on-demand time synchronization protocols have a very low accuracy and very strong spatial accumulative effect. These features are not suitable for several types of WSN applications, such as applications with stringent temporal requirements, or applications that have a large spatial region of interest. In this paper, we propose an on-demand time synchronization protocol, named AOTSP (Accurate On-demand Time Synchronization Protocol), which differs from other protocols of the same category by having the following advantages, as shown in our theoretical analysis and simulation results: (1) weak spatial accumulative effect; (2) fairly low communication cost; (3) low computational complexity; (4) high accuracy; (5) high scalability. Such features make AOTSP a suitable time synchronization protocol for a broad range of WSN applications.