Improving Fault Tolerance in High-Precision Clock Synchronization

被引：36

作者：

Gaderer, Georg ^{[1
]}

Loschmidt, Patrick ^{[1
]}

Sauter, Thilo ^{[1
]}

机构：

[1] Austrian Acad Sci, Inst Integrated Sensor Syst, A-2700 Wiener Neustadt, Austria

来源：

IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS | 2010年 / 6卷 / 02期

关键词：

Clock synchronization; computer network reliability; fault tolerance; IEEE; 1588; time measurement; TIME SYNCHRONIZATION; NETWORK;

D O I：

10.1109/TII.2010.2044580

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The very popular Precision Time Protocol (PTP or IEEE 1588) is widely used to synchronize distributed systems with high precision. The underlying principle is a master/slave concept based on the regular exchange of synchronization messages. This paper investigates an approach to enhance PTP with fault tolerance and to overcome the transient deterioration of synchronization accuracy during a recovery from a master failure. To this end, a concept is proposed where a group of masters negotiates a fault-tolerant agreement on the system-wide time and transparently synchronizes the associated IEEE 1588 slaves. Experimental verification on the basis of an Ethernet implementation shows that the approach is feasible and indeed improves the overall synchronization accuracy in terms of fault tolerance.

引用

页码：206 / 215

页数：10

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