Time synchronization in ad hoc networks
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Lightweight time synchronization for sensor networks
WSNA '03 Proceedings of the 2nd ACM international conference on Wireless sensor networks and applications
Timing-sync protocol for sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
TSync: a lightweight bidirectional time synchronization service for wireless sensor networks
ACM SIGMOBILE Mobile Computing and Communications Review - Special issue on wireless pan & sensor networks
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
DKMS: distributed hierarchical access control for multimedia networks
International Journal of Security and Networks
Elliptic curve cryptography-based access control in sensor networks
International Journal of Security and Networks
A lightweight encryption and authentication scheme for wireless sensor networks
International Journal of Security and Networks
Analysis of routing security-energy trade-offs in wireless sensor networks
International Journal of Security and Networks
Load-balanced key establishment methodologies in wireless sensor networks
International Journal of Security and Networks
Limiting DoS attacks during multihop data delivery in wireless sensor networks
International Journal of Security and Networks
Symmetric clock synchronization in sensor networks
Proceedings of the workshop on Real-world wireless sensor networks
Wireless Communications & Mobile Computing
Gradient clock synchronization in wireless sensor networks
IPSN '09 Proceedings of the 2009 International Conference on Information Processing in Sensor Networks
A linear time synchronization algorithm for underwater wireless sensor networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
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Time synchronisation has been extensively used in wireless sensor networks in many contexts, such as data fusion, TDMA schedules and synchronised sleep periods. Precision is the basic requirement for time synchronisation in wireless sensor networks. Existing time synchronisation methods were not designed to deal with dynamic environment changes. In this paper, we propose an error compensation algorithm which is designed to compensate errors caused by hardware clock drift and environment changes. The algorithm works according to a level hierarchy: the nodes in each level have the same hop and linear regression is adopted to analyse clock drift. The compensation mechanism decreases the instability caused by crystal oscillators and eliminates errors accumulated during running time. The algorithm is implemented on the SIA2420 platform using TinyOS and the results show the reliability of our algorithm.