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arXiv 1609.09281cs.DC
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具有最佳精度的自稳定拜占庭时钟同步

Self-stabilizing Byzantine Clock Synchronization with Optimal Precision

Pankaj Khanchandani, Christoph Lenzen

摘要:

我们重新审视的方法,拜占庭容错时钟同步的基础上介绍了林奇和韦尔奇的近似协议。我们的贡献有三个方面:(1)我们提供了一个稍微改进的算法变体,该算法产生了可以实现的偏斜和可持续频率偏移的改进界限。(2)我们将展示如何扩展该技术,也同步时钟速率。这允许不太频繁的通信,而不会显著损失精度,只要时钟速率变化足够慢。(3)我们提出了一个耦合方案,使这些算法的自稳定,同时保持其高精度。该方案利用低精度,但自我稳定的算法恢复的目的。

英文摘要:

We revisit the approach to Byzantine fault-tolerant clock synchronization based on approximate agreement introduced by Lynch and Welch. Our contribution is threefold: (1) We provide a slightly refined variant of the algorithm yielding improved bounds on the skew that can be achieved and the sustainable frequency offsets. (2) We show how to extend the technique to also synchronize clock rates. This permits less frequent communication without significant loss of precision, provided that clock rates change sufficiently slowly. (3) We present a coupling scheme that allows to make these algorithms self-stabilizing while preserving their high precision. The scheme utilizes a low-precision, but self-stabilizing algorithm for the purpose of recovery.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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