CN113498623A - 时间同步方法及装置、网络节点设备 - Google Patents

时间同步方法及装置、网络节点设备 Download PDF

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Publication number
CN113498623A
CN113498623A CN202080000051.8A CN202080000051A CN113498623A CN 113498623 A CN113498623 A CN 113498623A CN 202080000051 A CN202080000051 A CN 202080000051A CN 113498623 A CN113498623 A CN 113498623A
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China
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time
physical
clock signal
clock
period
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CN202080000051.8A
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CN113498623B (zh
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魏祥野
修黎明
白一鸣
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BOE Technology Group Co Ltd
Beijing BOE Technology Development Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Technology Development Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/12—Synchronisation of different clock signals provided by a plurality of clock generators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/14—Time supervision arrangements, e.g. real time clock
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0641—Change of the master or reference, e.g. take-over or failure of the master
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0679—Clock or time synchronisation in a network by determining clock distribution path in a network

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Electric Clocks (AREA)

Abstract

本公开实施例提供一种时间同步方法，包括：调节阶段，所述调节阶段包括N个调节周期，N为大于1的整数；在每个调节周期，至少根据预先获取的与该调节周期对应的频率控制字生成物理时钟信号，并至少根据所述物理时钟信号和物理时间偏差转换出逻辑时间；在每个调节周期生成的物理时钟信号的时钟斜率均达到各自对应的目标值，N个调节周期的物理时钟信号的时钟斜率的目标值逐渐接近于1；所述时钟斜率为基于所述物理时钟信号生成的物理时间与参考时间的关系曲线的斜率；所述物理时间偏差为：第N个调节周期的物理时钟信号在第N个调节周期的结束时刻所对应的物理时间与参考时间之间的时间差。本公开实施例还提供一种时间同步装置和网络节点设备。

Description

PCT国内申请，说明书已公开。

Claims (18)

  1. PCT国内申请，权利要求书已公开。
CN202080000051.8A 2020-01-19 2020-01-19 时间同步方法及装置、网络节点设备 Active CN113498623B (zh)

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CN114095166A (zh) * 2021-11-23 2022-02-25 北京京东方技术开发有限公司 生成节点临时身份标识的方法、节点及系统
CN115276617A (zh) * 2022-06-21 2022-11-01 上海芯问科技有限公司 时钟偏差调制电路、接口系统及电子设备

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CN111446962B (zh) * 2020-04-03 2023-12-12 京东方科技集团股份有限公司 时钟信号产生电路、时钟信号产生方法及电子设备

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CN107300688A (zh) * 2017-06-01 2017-10-27 中国电子科技集团公司第二十八研究所 一种多点定位系统中的时钟频率标校方法
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CN101883420B (zh) 2010-06-25 2012-12-12 中国科学院软件研究所 一种无线传感器网络时间同步方法
WO2013078105A1 (en) 2011-11-22 2013-05-30 Aclara Power-Line Systems Inc. Metrology timekeeping systems and methods
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CN102752843A (zh) * 2012-06-20 2012-10-24 中国科学院信息工程研究所 一种时间同步方法
CN105553598A (zh) * 2016-01-10 2016-05-04 北京航空航天大学 一种基于m估计稳健回归的时间触发以太网时钟补偿方法
CN107300688A (zh) * 2017-06-01 2017-10-27 中国电子科技集团公司第二十八研究所 一种多点定位系统中的时钟频率标校方法
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114095166A (zh) * 2021-11-23 2022-02-25 北京京东方技术开发有限公司 生成节点临时身份标识的方法、节点及系统
CN115276617A (zh) * 2022-06-21 2022-11-01 上海芯问科技有限公司 时钟偏差调制电路、接口系统及电子设备

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WO2021142828A1 (zh) 2021-07-22
US20220311529A1 (en) 2022-09-29
CN113498623B (zh) 2023-06-20
JP7493581B2 (ja) 2024-05-31
EP4093101A1 (en) 2022-11-23
EP4093101A4 (en) 2023-01-18
JP2023519041A (ja) 2023-05-10
US11799578B2 (en) 2023-10-24

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