CN114586297A - 一种同步方法及设备 - Google Patents

一种同步方法及设备 Download PDF

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Publication number
CN114586297A
CN114586297A CN201980101553.7A CN201980101553A CN114586297A CN 114586297 A CN114586297 A CN 114586297A CN 201980101553 A CN201980101553 A CN 201980101553A CN 114586297 A CN114586297 A CN 114586297A
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phy layer
sending
message
mac layer
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CN201980101553.7A
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CN114586297B (zh
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刘永志
林涛
刘建强
袁春
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Huawei Technologies Co Ltd
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Huawei Technologies 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
    • H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
    • H04J3/0697—Synchronisation in a packet node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • 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
    • H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
    • H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请实施例公开了一种同步方法及设备：首先，设备按预定周期在MAC层向PHY层发送的数据码流中标注出周期性码块，之后通过PHY层向对端设备发送上述数据码流，并在发送时记录下每个周期性码块的发送时间作为第一时间戳，且将第一时间戳返回MAC层。即设备在PHY层通过对从MAC层接收到周期性码块打上时间戳的方式，设置了一个基于PHY层的时间参考标尺(即第一时间戳)，若有同步报文需发送至对端设备，由于时间参考标尺是在PHY层标记的时间戳，因此，设备就会以该时间参考标尺实时计算该同步报文实质从PHY层发出的时间点(即打上发送时间戳)，从而可得到同步报文由PHY层发送的时间点，消除了PHY层的时延，提高了同步报文(如，1588报文)的发送时间戳的精度。

Description

PCT国内申请，说明书已公开。

Claims (31)

  1. PCT国内申请，权利要求书已公开。
CN201980101553.7A 2019-10-22 2019-10-22 一种同步方法及设备 Active CN114586297B (zh)

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GB2518921B (en) * 2014-03-24 2016-02-17 Imagination Tech Ltd High definition timing synchronisation function
CN111385678B (zh) * 2018-12-29 2023-05-12 中兴通讯股份有限公司 一种实现光链路通道自协商的方法和装置
US11844037B2 (en) * 2021-07-23 2023-12-12 Charter Communications Operating, Llc Automated determination of a timing offset for DOCSIS time protocol to provide precision time protocol accuracy

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US20150139251A1 (en) * 2013-11-15 2015-05-21 Broadcom Corporation Time synchronization architecture in a network device
US20170006567A1 (en) * 2015-06-30 2017-01-05 International Business Machines Corporation Network clock synchronization
CN109699199A (zh) * 2017-08-23 2019-04-30 华为技术有限公司 一种报文处理的方法和网络设备
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KR100932265B1 (ko) * 2007-10-17 2009-12-16 한국전자통신연구원 패킷 전송 방법 및 장치
US9392565B2 (en) * 2010-03-05 2016-07-12 Samsung Electronics Co., Ltd. Method and system for accurate clock synchronization through interaction between communication layers and sub-layers for communication systems
CN101814984B (zh) * 2010-04-09 2012-06-27 华为技术有限公司 获取不对称延迟时间的方法和装置
CN104113517A (zh) * 2013-04-22 2014-10-22 华为技术有限公司 时间戳生成方法、装置及***
CN108322280B (zh) * 2017-12-12 2019-07-23 北京时代民芯科技有限公司 一种分布式计算机网络时钟同步延时补偿方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150139251A1 (en) * 2013-11-15 2015-05-21 Broadcom Corporation Time synchronization architecture in a network device
US20170006567A1 (en) * 2015-06-30 2017-01-05 International Business Machines Corporation Network clock synchronization
CN109699199A (zh) * 2017-08-23 2019-04-30 华为技术有限公司 一种报文处理的方法和网络设备
CN110224775A (zh) * 2018-03-01 2019-09-10 中兴通讯股份有限公司 一种时间信息确定的方法、装置及设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023241274A1 (zh) * 2022-06-17 2023-12-21 华为技术有限公司 数据处理装置、主备切换方法以及***

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EP4044466A4 (en) 2022-10-26
US20220248353A1 (en) 2022-08-04
EP4044466A1 (en) 2022-08-17
CN114586297B (zh) 2024-06-11

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