Fine-grained network time synchronization using reference broadcasts
ACM SIGOPS Operating Systems Review - OSDI '02: Proceedings of the 5th symposium on Operating systems design and implementation
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
Tiny-sync: Tight time synchronization for wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
Time synchronization methods for wireless sensor networks: A survey
Programming and Computing Software
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We present a synchronization algorithm that is able to let the nodes in a sensor network perform a certain task at a given point in time. In contrast to other time synchronization algorithms we do not provide a global time basis that is shared on all nodes. Instead, any node in the network can spontaneously initiate a process that allows the synchronous execution of arbitrary tasks. We show that our approach is advantageous in scenarios where a global time is not needed, because it requires little communication compared with other time synchronization algorithms. We also show that our algorithm works in heterogeneous systems where the hardware provides highly varying clock accuracies. Moreover, heterogeneity does not only affect the hardware, but also the communication channels. We deal with different connection types--from highly unreliable and fluctuative wireless channels to reliable and fast wired connections.