Safe estimation of time uncertainty of local clocks

作者: Andrea Bondavalli , Francesco Brancati , Andrea Ceccarelli

DOI: 10.1109/ISPCS.2009.5340222

关键词: Real-time computingDependabilityExploitSynchronizationStatistical analysisComputer scienceClock synchronizationReliability (computer networking)EstimationSoftware

摘要: The Reliable and Self-Aware Clock (R&SAClock) is a new software clock aimed at providing resilient time information. It uses exploits the information collected from any chosen synchronization mechanism to provide both current uncertainty, intended as conservative self-adaptive estimation of distance an external global time. This paper describes algorithm that statistical analysis compute uncertainty with given coverage. Simulations are presented show behavior its effectiveness.

参考文章(8)
Paulo Verissimo, Luis Rodrigues, None, Distributed Systems for System Architects ,(2001)
Kay Römer, Philipp Blum, Lennart Meier, Time Synchronization and Calibration in Wireless Sensor Networks Handbook of Sensor Networks. pp. 199- 237 ,(2005) , 10.1002/047174414X.CH7
Darryl Veitch, Satish Babu, Attila P�sztor, Robust synchronization of software clocks across the internet internet measurement conference. pp. 219- 232 ,(2004) , 10.1145/1028788.1028817
Nikolaos M. Freris, P. R. Kumar, Fundamental limits on synchronization of affine clocks in networks conference on decision and control. pp. 921- 926 ,(2007) , 10.1109/CDC.2007.4434546
Andrea Bondavalli, Andrea Ceccarelli, Lorenzo Falai, Assuring Resilient Time Synchronization symposium on reliable distributed systems. pp. 3- 12 ,(2008) , 10.1109/SRDS.2008.12
D.L. Mills, Internet time synchronization: the network time protocol IEEE Transactions on Communications. ,vol. 39, pp. 1482- 1493 ,(1991) , 10.1109/26.103043