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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Dissertation
Consensus-based Time Synchronization Algorithms for Wireless Sensor Networks with Topological Optimization Strategies for Performance Improvement
TL;DR: Average consensus-based time synchronization algorithms are proposed,aiming to improve the performance metrics like number of iterations for convergence, total synchronization error, local synchronizationerror, message complexity, and scalability, and to cope up with energy constraint environment, Genetic algorithm based topological optimization strategies are proposed.
Journal ArticleDOI
On the Feasibility of Time Estimation under Isolation Conditions in Wireless Sensor Networks
TL;DR: This work analyzes the case in which a sensor node is temporarily unable to run a clock synchronization protocol due to failures or intermittent connectivity, or is willing to skip one or more clock adjustments to save energy, but still requires an accurate estimate of the reference time.
Proceedings ArticleDOI
A taxonomy of reliable request-response protocols
TL;DR: This paper generates valid sequences of client and server actions, organizes them into a prefix tree, and reveals three families of protocols matching common real-world implementations that try to deliver exactly-once or at-most-once.
Book ChapterDOI
Chapter 2 - Synchronization
TL;DR: This chapter focuses on time and carrier synchronization when a reference is available, both single and multi-carrier systems, and both flat-fading and non-flat-fader channels will be considered.
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.