상세정보
학술대회
Wireless Sensor Networks: A Scalable Time Synchronization
- 발행일
- 200605
- 출처
- International Conference on Computational Science and Its Applications (ICCSA) 2006 (LNCS 3983), v.3983, pp.509-518
- 협약과제
- 06MW1100, 임베디드 SW 기반 Smar Town 솔루션 기술 개발, 마평수
- 초록
- 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 제안 키워드
- 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