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Time synchronization method, system and device

A time synchronization and time synchronization technology, applied in time division multiplexing systems, electrical components, multiplexing communications, etc., can solve the problems of high implementation cost and high cost of GPS receivers, avoid synchronization errors, avoid time The effect of high synchronization costs

Active Publication Date: 2011-04-20
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high cost of GPS receivers leads to high implementation costs of this time synchronization scheme

Method used

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  • Time synchronization method, system and device
  • Time synchronization method, system and device
  • Time synchronization method, system and device

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Experimental program
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Embodiment Construction

[0049] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0050] The invention provides a time synchronization solution for sending the synchronization time of the clock source to the unit to be synchronized. In this solution, the synchronization time is composed of a high-order part and a low-order part, and there are high-delay channels and low-delay channels between the clock source and the unit to be synchronized; the synchronization time that is not sensitive to transmission delay is transmitted through the high-delay channel The high-order part of the synchronization time, which is sensitive to the transmission delay, is transmitted through the low-delay channel. Synchronize time locally.

[0051] Wherein, when dividing the high-order part and the low-order part of the synchronization time, the minimum unit of the high-order part of the synchronization time is made larger than the maximum delay of the high...

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Abstract

The invention discloses a time synchronization method, which is used for sending the synchronized time of a clock source to a unit to be synchronized, and the synchronized time consists of a high bit part and a lower bit part, a high-delay channel and a low-delay channel are arranged between the clock source and the unit to be synchronized; the high-delay channel is used for sending the high bit part of the synchronized time to the unit to be synchronized; and the low-delay channel is used for sending the lower bit part of the synchronized time to the unit to be synchronized; the unit to be synchronized acquires the lower bit part of the synchronized time that is currently transmitted from the low-delay channel after receiving the high bit part of the synchronized time; the high bit part and the lower bit part are combined into the local synchronized time. In addition, the invention further discloses a time synchronization system, clock source equipment and equipment to be synchronized. The invention can achieve the time synchronization with low cost and high precision.

Description

technical field [0001] The invention relates to time synchronization technology, in particular to a time synchronization method, a time synchronization system, a clock source device and a device to be synchronized. Background technique [0002] In many systems, the time synchronization of each component module in the system is required. For example, synchronization time is important information for data storage in a network storage system, and accurate data backup, disaster recovery, and other operations can be performed relying on accurate synchronization time. If there is an error in the synchronization time of each component module of the system, serious consequences such as data loss and recovery failure will occur during the data recovery process. [0003] At present, the clock source is mainly set in the system, and synchronization is realized by sending a clock synchronization command. In this synchronization mode, the clock source unit in the system sends the curre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
Inventor 刘介良安辉赖守锋
Owner NEW H3C TECH CO LTD
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