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Wireless Sensor Networks: A Scalable Time Synchronization
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- Authors
- Kee-Young Shin, Jin Won Kim, Il Gon Park, Pyeong Soo Mah
- Issue Date
- 2006-05
- Citation
- International Conference on Computational Science and Its Applications (ICCSA) 2006 (LNCS 3983), v.3983, pp.509-518
- Language
- English
- Type
- Conference Paper
- Project Code
- 06MW1100, Embedded Software-based SmarTown Solotion, Pyeong Soo Mah
- Abstract
- This paper presents a novel Chained-Rlpple Time Synchronization (CRIT) protocol that is scalable, flexible, and high-precise in Wireless Sensor Networks (WSN). CRIT adopts hierarchical and multi-hop time synchronization architecture with contributing energy-saving effects in WSN. The algorithm works in two phases. In the first phase, a horizontal structure between Missionary Nodes (MN) is established in the network by Piggy-Back Neighbor Time Synchronization (PBNT) algorithm. In the second phase, a vertical structure between a MN and Sensor Nodes (SN) is set up in each sensor group (SG) by Distributed Depth First Search (DDFS) algorithm. By applying these two phases repeatedly, all nodes in WSN efficiently synchronize to each other. For the purpose of performance evaluation, we first study the error sources of CRIT. In addition, we simulate CRIT in terms of synchronization errors of two phases using network simulator. © Springer-Verlag Berlin Heidelberg 2006.
- KSP Keywords
- Energy saving, Multi-Hop, Network simulator(NS), Performance evaluation, Second phase, Sensor group, Sensor node, Set up, Static wireless sensor networks(WSNs), Synchronization error, Time synchronization