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Time synchronizing method, apparatus and system for master, slave time clock side in synchronous network

A technology of time synchronization and master clock, applied in the field of communication systems, can solve problems such as restricting the development of the industry, making breakthroughs in work efficiency, and high costs

Active Publication Date: 2009-02-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of technology, although GPS technology has become more and more mature, its work efficiency has not been able to make breakthrough progress, and the high cost brought by the use of GPS technology has begun to restrict the development of the industry.

Method used

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  • Time synchronizing method, apparatus and system for master, slave time clock side in synchronous network
  • Time synchronizing method, apparatus and system for master, slave time clock side in synchronous network
  • Time synchronizing method, apparatus and system for master, slave time clock side in synchronous network

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Embodiment Construction

[0040] The time synchronization method, circuit, and system of the master and slave clock sides in the synchronization network of the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] The present invention will be described in detail below in conjunction with the time synchronization method in the synchronization network of the embodiment of the present invention.

[0042] Such as figure 1 As shown, a time synchronization method from the clock side in a synchronization network, including:

[0043] S101. Receive a synchronization message carried in the first downlink frame;

[0044] S102. Generate an entry indication pulse according to the received first downlink frame, where the delay between the entry indication pulse and the framing byte in the first downlink frame is fixed;

[0045] S103. Collect the first time of the slave clock side according to the entry indication pulse;

[0046] S104. Receive ...

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Abstract

The inventive embodiment discloses a method, a device and a system for synchronizing time on a main clock side and a slave clock side in a synchronization network, which belong to the communication field and are designed to solve the technical problem in achieving time synchronization of the synchronization network. The method synchronizing time on the slave clock side in the synchronization network comprises the following steps: receiving a synchronous message supported on a first downlink frame; generating an entrance indication pulse according to the received first downlink frame, the entrance indication pulse being fixed with the time delay of fixed-frame bytes in the first downlink frame; collecting a first time on the slave clock side according to the entrance indication pulse; receiving a following message supported on a second downlink frame, the following message carrying a first time for transmitting the synchronous message on the main clock side; and adjusting the local time according to the difference between the first time on the main clock side and the first time on the slave clock side.

Description

technical field [0001] The invention relates to a communication system, in particular to a time synchronization method, device and system of a synchronization network. Background technique [0002] In the current synchronization network, taking my country as an example, each provincial switching office has a clock reference LPR, and this clock is basically synchronized by GPS. Therefore, the inter-office equipment of the switching office can be synchronized through GPS. However, with the development of technology, although GPS technology has become more and more mature, its working efficiency has not been able to make breakthrough progress, and the high cost brought by the use of GPS technology has begun to restrict the development of the industry. Therefore, it is necessary to provide a new clock synchronization technology used in the synchronization network. Contents of the invention [0003] Embodiments of the present invention provide a time synchronization method, de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00H04L29/06
CPCG04G5/00G04G7/00H04J3/0664
Inventor 李艳新李军程功宝王万财卓兴旺吴博周桂欣陈仕隆李春华涛
Owner HUAWEI TECH CO LTD
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