Journal ArticleDOI
Probabilistic clock synchronization
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TLDR
A probabilistic method is proposed for reading remote clocks in distributed systems subject to unbounded random communication delays and can achieve clock synchronization precisions superior to those attainable by previously published clock synchronization algorithms.Abstract:
A probabilistic method is proposed for reading remote clocks in distributed systems subject to unbounded random communication delays. The method can achieve clock synchronization precisions superior to those attainable by previously published clock synchronization algorithms. Its use is illustrated by presenting a time service which maintains externally (and hence, internally) synchronized clocks in the presence of process, communication and clock failures.read more
Citations
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Proceedings ArticleDOI
Distributed sensor calibration with minimum connections in wireless sensor networks
TL;DR: In this article, the problem of consensus based distributed calibration has been studied for wireless sensor networks, and the proposed consensus-based distributed algorithm is shown to determine the set of sensors with minimum elements required for calibration of a given WSN.
A unifying concept for Multi-device Media Navigation
TL;DR: In this paper, the authors present the concept of the Media State Vec- tor (MSV), a representation of uni-dimensional motion in real time, intended as a general basis for synchronization of distributed media presentations.
Proceedings Article
Scalable synchronization of clocks in distributed environments
TL;DR: A method of pseudo-synchronization of clocks by making use of the occurrence time of events included in direct "happened-before" relations to approximate the actual clock shift between two clocks using the minimum transmission delay of messages between a pair of hosts.
Book ChapterDOI
Simulating Synchrony on Top of Asynchronous Systems
TL;DR: This chapter presents synchronizers suited to partially synchronous systems, which means here that message delays are bounded but the clocks of the processes (processors) are not synchronized (some private local area networks have such characteristics).
References
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Journal ArticleDOI
Clock Synchronization in Distributed Real-Time Systems
TL;DR: Depending on the types and number of tolerated faults, this paper presents upper bounds on the achievable synchronization accuracy for external and internal synchronization in a distributed real-time system.
Journal ArticleDOI
Synchronizing clocks in the presence of faults
TL;DR: Three algorithms for maintaining clock synchrony in a distributed multiprocess system where each process has its own clock work in the presence of arbitrary clock or process failures, including “two-faced clocks” that present different values to different processes.
Journal ArticleDOI
Optimal clock synchronization
T. K. Srikanth,Sam Toueg +1 more
TL;DR: This is the first known solution that achieves optimal accuracy—the accuracy of synchronized clocks (with respect to real time) is as good as that specified for the underlying hardware clocks.
Proceedings ArticleDOI
A new fault-tolerant algorithm for clock synchronization
Jennifer Lundelius,Nancy Lynch +1 more
TL;DR: A new fault-tolerant algorithm for solving a variant of Lamport's clock synchronization problem for a system of distributed processes that communicate by sending messages, which solves the problem of maintaining closely synchronized local times, assuming that processes' local times are closely synchronized initially.
Journal ArticleDOI
A new fault-tolerant algorithm for clock synchronization
Jennifer L. Welch,Nancy Lynch +1 more
TL;DR: A new fault-tolerant algorithm for solving a variant of Lamport's clock synchronization problem for a system of distributed processes that communicate by sending messages that maintains synchronization to within a small constant, whose magnitude depends upon the rate of clock drift, the message delivery time and its uncertainty.