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학술대회 SAEP: Secure and Accurate and Energy-efficient Time Synchronization in Wireless Sensor Networks
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김경태, 손명희
International Symposium on Parallel and Distributed Computing (ISPDC) 2009, pp.117-120
09MC2100, Pro-active Idle-Stop을 위한 가상센서기반 Situation-Aware 기술개발, 손명희
We have developed a secure, accurate and energy-efficient time synchronization protocol (SAEP). First, SAEP achieves accurate time synchronization service with significantly reducing the number of message exchanges. Second, SAEP safeguards Byzantine failure, in which nodes drop, modify, or delay time information in an attempt to disrupt the time synchronization service in multi-hop networks. SAEP takes a distributed approach where each sensor independently makes decisions based only on the information collected from multiple adjacent nodes, thus achieving a high level of resistance to various attacks at a minimizing energy cost. In our experiment SAEP outperforms the existing time synchronization protocol in accuracy, energy consumption, and it is even resilient to multiple capture attacks. © 2009 IEEE.
KSP 제안 키워드
Capture attacks, Delay Time, Distributed approach, Energy-efficient time synchronization, Static wireless sensor networks(WSNs), Synchronization Protocol, Time information, byzantine failure, energy consumption, energy cost, multi-hop network