Earticle

초록

영어

Time synchronization is critical for most distributed systems, especially for low-duty-cycle Wireless Sensor Networks(WSNs). Low-duty-cycle WSNs make use of time synchronization in many contexts(scheduling and sleeping, TDMA, Event Identification, data fusion, etc). A novel adaptive source time synchronization algorithm designed for low-duty-cycle WSNs, namely ASTS, is presented in the paper. The algorithm can be used for a small Low-Duty-Cycle WSN to be synchronized to a common clock, or used for a giant Low-Duty-Cycle WSN to be synchronized distributed. To improve the synchronization accuracy, all nodes estimate their time drifts relative to their neighbors using Maximum Likelihood Estimation, and get be synchronized to a common clock or their heads based on a vector of time drifts carried by the reference packet sent by the reference node. Simulation shows that the algorithm drastically improves the synchronization accuracy and scalability, and is much more applicable for low-duty-cycle WSNs than other synchronization algorithms.

목차

Abstract
 1. Introduction
 2. Related Works
 3. Model and Analysis
  3.1 How to Get ⓗ(u)
  3.2 How to Synchronize to a Common Clock in a Small Low-duty-cycle WSN
  3.3 How to Synchronize to a Common Clock in a Giant Low-duty-cycle WSN
 4. Simulation and Performance
 5. Conclusion
 Acknowledgements
 References

키워드

저자

• Tian Le [ Institute of Electricity and Information Engineering, Beijing University of Civil Engineering and Architecture, Beijing, China, 100044 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Future Generation Communication and Networking

• 간기

  격월간

• pISSN

  2233-7857

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605