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
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.
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) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101783779B (zh) * | 2009-01-16 | 2014-07-16 | 华为技术有限公司 | 一种xDSL时间同步方法、装置和系统 |
US8305955B2 (en) * | 2009-02-27 | 2012-11-06 | Broadcom Corporation | Method and system for network synchronization via a femtocell |
CN102035613A (zh) * | 2009-09-28 | 2011-04-27 | 华为技术有限公司 | 实现时间同步的方法、装置及网络系统 |
US9001904B2 (en) * | 2010-03-03 | 2015-04-07 | Lantiq Deutschland Gmbh | Multi-carrier clock transport and synchronization |
CN102244925B (zh) | 2010-05-14 | 2014-05-07 | 华为技术有限公司 | 时钟同步方法、用户端设备和时钟同步系统 |
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 |
US9680567B2 (en) | 2011-03-03 | 2017-06-13 | Acacia Communications, Inc. | Fault localization and fiber security in optical transponders |
US20120278421A1 (en) * | 2011-04-27 | 2012-11-01 | Centec Networks (Suzhou) Co., Ltd. | Providing a data sample in a measurement and control system |
WO2013110332A1 (en) * | 2012-01-26 | 2013-08-01 | Nokia Siemens Networks Oy | Time synchronization in dsl environment |
CN102742190A (zh) * | 2012-02-01 | 2012-10-17 | 华为技术有限公司 | 时间同步方法和设备及系统 |
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 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6137839A (en) * | 1996-05-09 | 2000-10-24 | Texas Instruments Incorporated | Variable scaling of 16-bit fixed point fast fourier forward and inverse transforms to improve precision for implementation of discrete multitone for asymmetric digital subscriber loops |
JP3024111B2 (ja) * | 1997-12-17 | 2000-03-21 | 株式会社ケンウッド | 受信機の受信信号絶対位相化装置 |
CN1115030C (zh) * | 1997-12-17 | 2003-07-16 | 株式会社建伍 | 接收机接收信号绝对定相装置 |
EP0987864A1 (en) | 1998-09-15 | 2000-03-22 | Alcatel | Time error compensation arrangement and multi-carrier modem comprising the arrangement |
US6697769B1 (en) * | 2000-01-21 | 2004-02-24 | Microsoft Corporation | Method and apparatus for fast machine training |
US7068746B1 (en) * | 2000-03-01 | 2006-06-27 | Lucent Technologies Inc. | Base station transceiver to radio network controller synchronization filtering function |
US6934655B2 (en) * | 2001-03-16 | 2005-08-23 | Mindspeed Technologies, Inc. | Method and apparatus for transmission line analysis |
RU19981U1 (ru) * | 2001-04-24 | 2001-10-10 | Закрытое акционерное общество "НТЦ НАТЕКС" | Цифровая система передачи для двух кабельных пар с аналоговой обработкой и коррекцией сигнала |
US7151945B2 (en) * | 2002-03-29 | 2006-12-19 | Cisco Systems Wireless Networking (Australia) Pty Limited | Method and apparatus for clock synchronization in a wireless network |
US20070147435A1 (en) * | 2005-12-23 | 2007-06-28 | Bruce Hamilton | Removing delay fluctuation in network time synchronization |
US7602873B2 (en) * | 2005-12-23 | 2009-10-13 | Agilent Technologies, Inc. | Correcting time synchronization inaccuracy caused by asymmetric delay on a communication link |
US8295310B2 (en) * | 2006-09-25 | 2012-10-23 | Futurewei Technologies, Inc. | Inter-packet gap network clock synchronization |
CN101247169A (zh) * | 2007-02-15 | 2008-08-20 | 华为技术有限公司 | 一种在通信网络中实现时间同步的方法和系统以及设备 |
US7920881B2 (en) | 2007-05-15 | 2011-04-05 | 2Wire, Inc. | Clock synchronization for a wireless communications system |
CN101075848B (zh) | 2007-07-05 | 2011-07-20 | 华为技术有限公司 | 一种微蜂窝网络基站同步的方法、系统和基站 |
CN101425865B (zh) | 2007-10-31 | 2013-04-24 | 电信科学技术研究院 | 传输网中的时钟同步方法、系统和从时钟侧实体 |
US7990909B2 (en) * | 2007-11-02 | 2011-08-02 | Ciena Corporation | Synchronization of network nodes |
US8208497B2 (en) * | 2007-12-28 | 2012-06-26 | Qualcomm Incorporated | Time stamped packet data interface between a modem and an RF unit |
CN101231337B (zh) * | 2008-02-15 | 2010-07-28 | 哈尔滨工程大学 | 高精度时间同步装置 |
US8473638B2 (en) * | 2008-05-02 | 2013-06-25 | James Aweya | Method and apparatus for time and frequency transfer in communication networks |
US8274998B2 (en) * | 2008-10-02 | 2012-09-25 | Cortina Systems, Inc. | Systems and methods for packet based timing offset determination using timing adjustment information |
CN101783779B (zh) * | 2009-01-16 | 2014-07-16 | 华为技术有限公司 | 一种xDSL时间同步方法、装置和系统 |
CN102111380B (zh) * | 2009-12-25 | 2014-05-07 | 华为技术有限公司 | 一种时间同步的方法、设备及系统 |
US8670439B2 (en) * | 2010-07-02 | 2014-03-11 | Futurewei Technologies, Inc. | Method for accurate distribution of time to a receiver node in an access network |
-
2009
- 2009-01-16 CN CN200910105103.3A patent/CN101783779B/zh active Active
- 2009-11-18 ES ES09838135.3T patent/ES2437665T3/es active Active
- 2009-11-18 EP EP15178976.5A patent/EP2966826B1/en active Active
- 2009-11-18 AU AU2009337606A patent/AU2009337606B2/en active Active
- 2009-11-18 CA CA2749879A patent/CA2749879C/en active Active
- 2009-11-18 EP EP09838135.3A patent/EP2387190B1/en active Active
- 2009-11-18 JP JP2011545611A patent/JP5429758B2/ja active Active
- 2009-11-18 RU RU2011134258/07A patent/RU2483460C2/ru active
- 2009-11-18 WO PCT/CN2009/075002 patent/WO2010081348A1/zh active Application Filing
- 2009-11-18 PL PL13178105.6T patent/PL2658201T3/pl unknown
- 2009-11-18 MX MX2011007601A patent/MX2011007601A/es active IP Right Grant
- 2009-11-18 PL PL09838135T patent/PL2387190T3/pl unknown
- 2009-11-18 ES ES13178105.6T patent/ES2579154T3/es active Active
- 2009-11-18 BR BRPI0924053-5A patent/BRPI0924053B1/pt active IP Right Grant
- 2009-11-18 EP EP13178105.6A patent/EP2658201B1/en active Active
- 2009-11-18 KR KR1020117018249A patent/KR101288435B1/ko active IP Right Grant
-
2011
- 2011-07-15 US US13/184,276 patent/US8442175B2/en active Active
-
2013
- 2013-02-07 US US13/761,568 patent/US10135602B2/en active Active
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
MX2011007601A (es) | Metodo, aparato, y sistema para la sincronizacion temporal de lineas digitales x de suscriptor. | |
NZ596765A (en) | Methods and arrangements in a telecommunications network | |
GB2463110B (en) | Communication system and method | |
MX2010006989A (es) | Equipos y metodos para sincronizacion cronometrada de enlace ascendente. | |
EP2101438A3 (en) | Communication system, receiver and reception method | |
EP2200344A3 (en) | Wireless network protocol for a hearing system | |
EP2506640B1 (en) | Clock synchronization method, customer premises equipment and clock synchronization system | |
WO2010039875A3 (en) | Out-of-synchronization handling method and apparatus | |
MX2009009600A (es) | Metodo de reporte de informacion de calidad de canal, estacion base y terminal de usuario. | |
MY168816A (en) | Systems and methods of network synchronization | |
WO2006124082A3 (en) | Method and apparatus for synchronization of digital multimedia packets | |
WO2011162520A3 (ko) | 채널 상태 정보 전송 방법 및 장치 | |
MX2010001200A (es) | Otro tipo de direccionamiento del mensaje de gestion de protocolos a traves de una red inalambrica de dispositivos de medicion. | |
MX2010002540A (es) | Dispositivo de estacion movil, dispositivo de estacion de base, y metodo de transmision de enlace ascendente y de enlace descendente. | |
CN104320843A (zh) | 蓝牙发声装置的音频同步方法 | |
WO2011162522A3 (ko) | 채널 상태 정보 전송 방법 및 장치 | |
WO2012122901A3 (zh) | 同步hs终端设备之间媒体播放的方法 | |
MX2008001797A (es) | Metodo y aparato para transmitir y/o recibir datos via red inalambrica y un dispositivo inalambrico. | |
PL3448074T3 (pl) | Sposób, urządzenie i system do ustanawiania połączeń sygnalizacyjnych S1 w rozwiniętej sieci | |
EP2234442A3 (en) | Radio base station apparatus and synchronization method thereof | |
WO2011051252A3 (en) | Method and apparatus for channel quality derivation | |
NZ593644A (en) | Method and arrangement in a wireless communication system | |
EP2062408A4 (en) | METHOD AND APPARATUS FOR TRANSMITTING UPLINK SIGNAL, AND METHOD AND APPARATUS FOR GENERATING UPLINK SIGNAL IN COMMUNICATION SYSTEM | |
WO2012050360A3 (en) | Method and system of transmitting packet data units of machine type communication devices over a network interface in a long term evolution network | |
WO2006102065A3 (en) | Methods and apparatuses to provide synchronization symbol on demand for dsl systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG | Grant or registration |