MX2011007601A - Metodo, aparato, y sistema para la sincronizacion temporal de lineas digitales x de suscriptor. - Google Patents

Metodo, aparato, y sistema para la sincronizacion temporal de lineas digitales x de suscriptor.

Info

Publication number
MX2011007601A
MX2011007601A MX2011007601A MX2011007601A MX2011007601A MX 2011007601 A MX2011007601 A MX 2011007601A MX 2011007601 A MX2011007601 A MX 2011007601A MX 2011007601 A MX2011007601 A MX 2011007601A MX 2011007601 A MX2011007601 A MX 2011007601A
Authority
MX
Mexico
Prior art keywords
customer premises
premises equipment
central office
time
clock
Prior art date
Application number
MX2011007601A
Other languages
English (en)
Inventor
Guijin Xu
Guozhu Long
Ruijie Xiao
Zhilei Zhao
Xuyong Wu
Yuchen Jia
Original Assignee
Huawei Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of MX2011007601A publication Critical patent/MX2011007601A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
    • H04L7/0033—Correction by delay
    • H04L7/0041—Delay of data signal
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

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

Abstract

La presente invención proporciona un método, un aparato, y un sistema para la sincronización temporal de una Línea Digital x de suscriptor (xDSL). El método incluye: transmitir, por un equipo en las instalaciones del cliente (CPE), un primer símbolo a un equipo de oficina central (CO), y obtener el tiempo Ts2 que indica el momento en que se transmite el primer símbolo; recibir, mediante el CPE, un segundo símbolo transmitido por el CO, y obtener un tiempo Ts1 que indica el momento en que se recibe el segundo símbolo; obtener, por el CPE obtiene tiempo Tm2 que indica el momento en que se recibe el primer símbolo por el CO y el tiempo Tm1 que indica el momento en que se transmite el segundo símbolo por el CO; el CPE calcula un desfase entre un reloj del CPE y un reloj de la CO de acuerdo con Ts1, Ts2, Tm1, Tm2 y un retardo del CPE; y el CPE ajusta el reloj del CPE de acuerdo con el desfase para lograr la sincronización. De acuerdo con la presente invención, al ajustar el tiempo del reloj del CPE y el reloj de la CO, se puede obtener con exactitud para lograr efectivamente la sincronización temporal entre el CPE y el CO.
MX2011007601A 2009-01-16 2009-11-18 Metodo, aparato, y sistema para la sincronizacion temporal de lineas digitales x de suscriptor. MX2011007601A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910105103.3A CN101783779B (zh) 2009-01-16 2009-01-16 一种xDSL时间同步方法、装置和系统
PCT/CN2009/075002 WO2010081348A1 (zh) 2009-01-16 2009-11-18 一种xDSL时间同步方法、装置和系统

Publications (1)

Publication Number Publication Date
MX2011007601A true MX2011007601A (es) 2011-09-29

Family

ID=42339423

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2011007601A MX2011007601A (es) 2009-01-16 2009-11-18 Metodo, aparato, y sistema para la sincronizacion temporal de lineas digitales x de suscriptor.

Country Status (13)

Country Link
US (2) US8442175B2 (es)
EP (3) EP2966826B1 (es)
JP (1) JP5429758B2 (es)
KR (1) KR101288435B1 (es)
CN (1) CN101783779B (es)
AU (1) AU2009337606B2 (es)
BR (1) BRPI0924053B1 (es)
CA (1) CA2749879C (es)
ES (2) ES2437665T3 (es)
MX (1) MX2011007601A (es)
PL (2) PL2658201T3 (es)
RU (1) RU2483460C2 (es)
WO (1) WO2010081348A1 (es)

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US9001904B2 (en) * 2010-03-03 2015-04-07 Lantiq Deutschland Gmbh Multi-carrier clock transport and synchronization
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CN102934379B (zh) * 2010-06-11 2017-05-24 网络洞察力知识产权公司 用于同步网络的节点和系统
CN102137314B (zh) * 2010-07-28 2015-07-08 华为技术有限公司 数字用户线系统中的信号发送方法、装置和系统
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WO2013113380A1 (en) * 2012-02-01 2013-08-08 Abb Technology Ag Updating data of a controller of a primary device of a power substation
WO2014063309A1 (zh) 2012-10-23 2014-05-01 华为技术有限公司 发送selt测量信号的方法和装置以及控制设备
US20140161000A1 (en) * 2012-12-10 2014-06-12 Futurewei Technologies, Inc. Timing offset correction in a tdd vectored system
US9432144B2 (en) * 2014-09-12 2016-08-30 Ciena Corporation Precision time transfer systems and methods in optical networks
TWI566613B (zh) * 2015-10-15 2017-01-11 廣達電腦股份有限公司 資料流中繼裝置與通訊裝置
US9742549B1 (en) * 2016-09-29 2017-08-22 Analog Devices Global Apparatus and methods for asynchronous clock mapping
WO2018151202A1 (ja) * 2017-02-17 2018-08-23 日本電信電話株式会社 センシングシステムおよびタイムスタンプ補正方法
CN108988972B (zh) * 2017-06-02 2020-04-28 华为技术有限公司 一种时钟同步方法及设备
US10594395B2 (en) 2018-07-23 2020-03-17 Ciena Corporation Systems and methods for compensating coherent optics delay asymmetry in a packet optical network
CN111867040B (zh) * 2019-04-30 2021-12-28 华为技术有限公司 一种通信方法、终端设备以及网络设备
US11552722B2 (en) 2020-12-10 2023-01-10 Ciena Corporation Precision time protocol using a coherent optical DSP frame

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Also Published As

Publication number Publication date
EP2966826A1 (en) 2016-01-13
EP2387190A4 (en) 2012-05-23
US10135602B2 (en) 2018-11-20
PL2387190T3 (pl) 2014-02-28
US8442175B2 (en) 2013-05-14
CN101783779A (zh) 2010-07-21
US20110274149A1 (en) 2011-11-10
BRPI0924053A2 (pt) 2016-01-26
JP2012515476A (ja) 2012-07-05
EP2658201A1 (en) 2013-10-30
KR20110102941A (ko) 2011-09-19
CA2749879A1 (en) 2010-07-22
EP2387190A1 (en) 2011-11-16
RU2483460C2 (ru) 2013-05-27
US20130148710A1 (en) 2013-06-13
RU2011134258A (ru) 2013-02-27
AU2009337606A1 (en) 2011-08-18
BRPI0924053B1 (pt) 2021-01-05
AU2009337606B2 (en) 2013-10-03
ES2579154T3 (es) 2016-08-05
WO2010081348A1 (zh) 2010-07-22
ES2437665T3 (es) 2014-01-13
EP2966826B1 (en) 2018-01-10
CN101783779B (zh) 2014-07-16
CA2749879C (en) 2015-07-07
EP2658201B1 (en) 2016-03-30
PL2658201T3 (pl) 2016-09-30
KR101288435B1 (ko) 2013-07-26
EP2387190B1 (en) 2013-09-18
JP5429758B2 (ja) 2014-02-26

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