A time synchronization method and device

A time synchronization and time technology, applied in the field of communication, can solve the problems of inability to quickly adjust the clock by the protocol, and inability to update the time of distributed devices multiple times per second, so as to shorten the waiting time and improve the efficiency of time synchronization.

Active Publication Date: 2022-05-24
NEW H3C SECURITY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the emergence of TD-SCDMA and TD-LTE system high-precision time ground transmission requirements, but the above-mentioned existing method protocol cannot achieve multiple time updates per second in distributed equipment, and cannot meet the requirements of the protocol to quickly adjust the clock

Method used

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  • A time synchronization method and device
  • A time synchronization method and device
  • A time synchronization method and device

Examples

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Embodiment Construction

[0013] The detailed description will be given with a number of examples shown in the various figures. In the following detailed description, numerous specific details are provided for the purpose of providing a thorough understanding of the present invention. Well-known methods, procedures, components, and circuits have not been described in detail in the examples so as not to obscure the understanding of the examples.

[0014] In the terms used, the term "including" means including but not limited to; the term "containing" means including but not limited to; the terms "above", "within" and "below" include this number; the terms "greater than" and "less than" mean not Include this number. The term "based on" means based on at least a portion thereof.

[0015] figure 1 Shown is a schematic diagram of an embodiment of a time synchronization device provided by the present invention, figure 1 The shown distributed equipment consists of four single boards, namely the main contr...

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Abstract

The present invention provides a time synchronization method and equipment, wherein the method includes calculating the time deviation value according to the deviation calculation cycle; adding the time deviation value to the millisecond count value of the counter of the main control board clock; judging the difference between the time deviation value and the current millisecond Whether the sum of the millisecond value added to the count value is less than the count range millisecond of the counter; if so, set the current millisecond count value of the counter and the decimal place of the second of the day time of the main control board clock according to the sum of the millisecond value; Execute time synchronization between boards N times within a second; N is an integer greater than 2 and less than 40.

Description

technical field [0001] The present invention relates to communication technology, in particular to a time synchronization method and device. Background technique [0002] PTP (Precise Time Protocol, Precision Time Protocol) is a packet-based time synchronization technology. Devices communicate with each other through Ethernet packets to achieve the time synchronization function. [0003] In a chassis-type distributed device, the service board where the slave port is located calculates the time deviation value Delta T value from the upstream device, and notifies the main control board of the time deviation value Delta T value through inter-board communication. After the clock module time deviation value Delta T value of the main control board updates the time of the main control board, it notifies the service board where the slave port is located that the time of the main control board has been updated. The clock module of the main control board synchronizes the Delta T to a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
CPCH04J3/0667
Inventor 许良掌林贝贝
Owner NEW H3C SECURITY TECH CO LTD
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