GB2427327B - Line-timing in packet-based networks - Google Patents

Line-timing in packet-based networks

Info

Publication number
GB2427327B
GB2427327B GB0607970A GB0607970A GB2427327B GB 2427327 B GB2427327 B GB 2427327B GB 0607970 A GB0607970 A GB 0607970A GB 0607970 A GB0607970 A GB 0607970A GB 2427327 B GB2427327 B GB 2427327B
Authority
GB
United Kingdom
Prior art keywords
packet
timing
line
based networks
networks
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB0607970A
Other languages
English (en)
Other versions
GB0607970D0 (en
GB2427327A (en
Inventor
P Stephan Bedrosian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agere Systems LLC
Original Assignee
Agere Systems LLC
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 Agere Systems LLC filed Critical Agere Systems LLC
Priority to GB1106986A priority Critical patent/GB2477058B/en
Priority to GB1106984A priority patent/GB2477057B/en
Publication of GB0607970D0 publication Critical patent/GB0607970D0/en
Publication of GB2427327A publication Critical patent/GB2427327A/en
Application granted granted Critical
Publication of GB2427327B publication Critical patent/GB2427327B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/062—Synchronisation of signals having the same nominal but fluctuating bit rates, e.g. using buffers
    • H04J3/0632—Synchronisation of packets and cells, e.g. transmission of voice via a packet network, circuit emulation service [CES]
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0008—Synchronisation information channels, e.g. clock distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/14—Interfaces between hierarchically different network devices between access point controllers and backbone network device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)
GB0607970A 2005-04-27 2006-04-21 Line-timing in packet-based networks Expired - Fee Related GB2427327B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1106986A GB2477058B (en) 2005-04-27 2006-04-21 Line-timing in packet-based networks
GB1106984A GB2477057B (en) 2005-04-27 2006-04-21 Line-timing in packet-based networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/115,715 US7539200B2 (en) 2005-04-27 2005-04-27 Line-timing in packet-based networks

Publications (3)

Publication Number Publication Date
GB0607970D0 GB0607970D0 (en) 2006-05-31
GB2427327A GB2427327A (en) 2006-12-20
GB2427327B true GB2427327B (en) 2011-07-06

Family

ID=36581065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0607970A Expired - Fee Related GB2427327B (en) 2005-04-27 2006-04-21 Line-timing in packet-based networks

Country Status (5)

Country Link
US (3) US7539200B2 (enExample)
JP (2) JP5039319B2 (enExample)
KR (1) KR101234360B1 (enExample)
CN (1) CN1855784B (enExample)
GB (1) GB2427327B (enExample)

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FR2886793A1 (fr) * 2005-06-06 2006-12-08 France Telecom Procede et systeme de transmission d'un rythme de synchronisation sur un lien reseau de technologie ethernet et leurs applications
US7835366B2 (en) * 2005-11-01 2010-11-16 Ciena Corporation Three-way message exchange clock synchronization
US7492732B2 (en) * 2005-11-01 2009-02-17 Nortel Networks Limited Differential clock recovery in packet networks
US8306070B2 (en) * 2005-12-02 2012-11-06 Broadcom Corporation Method and system for speed negotiation for twisted pair links using intelligent E-FIFO in fibre channel systems
EP1914914B1 (en) * 2006-10-18 2010-11-03 Tellabs Oy Method and arrangement for synchronization
US8199695B2 (en) * 2007-04-10 2012-06-12 International Business Machines Corporation Clock signal synchronization among computers in a network
EP2009821B1 (en) 2007-06-28 2011-11-02 Alcatel Lucent Method of distributing a clock signal in a circuit emulation service network
US8831435B2 (en) * 2008-03-28 2014-09-09 Centurylink Intellectual Property Llc System and method for dual wavelength communications of a clock signal
JP4628440B2 (ja) * 2008-03-31 2011-02-09 富士通株式会社 クロック発生機能付き装置、基準周波数等設定方法、および基準周波数等調整方法
WO2009126665A1 (en) 2008-04-07 2009-10-15 Actelis Networks Ltd. Method and apparatus for resilient clock transfer over multiple dsl lines
CN102415129B (zh) * 2009-04-24 2014-07-23 三菱电机株式会社 无线基站
CN101931524A (zh) * 2009-06-25 2010-12-29 中兴通讯股份有限公司 一种同步数字传输网的时钟源选择方法
KR101298806B1 (ko) * 2009-12-21 2013-08-22 한국전자통신연구원 다수의 이더넷 물리층 인터페이스를 지원하는 클럭 운용 방법 및 그 장치
WO2011088150A2 (en) * 2010-01-12 2011-07-21 Vitesse Semiconductor Corporation Method for switching master/slave timing in a 1000base-t link without traffic disruption
EP2521292B1 (en) * 2011-05-06 2017-08-09 ADVA Optical Networking SE Clock monitoring in a synchronous network
US8934891B2 (en) * 2012-04-19 2015-01-13 Broadcom Corporation Small cell network self-synchronization
US9301267B2 (en) * 2012-08-01 2016-03-29 Broadcom Corporation Radio over Ethernet
US9513388B2 (en) * 2014-03-12 2016-12-06 Sercel Method for providing synchronization in a data acquisition system
US9219562B2 (en) * 2014-05-08 2015-12-22 Nokia Solutions And Networks Oy System and method to dynamically redistribute timing and synchronization in a packet switched network
FR3026255B1 (fr) * 2014-09-24 2017-12-22 Thales Sa Architecture d'echange de donnees numeriques utilisable dans des applications avioniques
WO2017124288A1 (zh) * 2016-01-19 2017-07-27 华为技术有限公司 传输时钟报文的方法和装置
JP2018074375A (ja) * 2016-10-28 2018-05-10 富士通株式会社 クロック再生回路，半導体集積回路装置およびｒｆタグ
US10390116B1 (en) * 2018-11-30 2019-08-20 Ciena Corporation Optical modem line timing
JP7301689B2 (ja) * 2019-09-13 2023-07-03 株式会社東芝 Ｐｔｐメッセージ選択方法およびプログラム、ならびにｐｔｐスレーブ装置
CN116074871A (zh) * 2019-11-29 2023-05-05 华为技术有限公司 一种时钟故障定位方法和网络设备

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JPS6066539A (ja) * 1983-09-22 1985-04-16 Nec Corp クロック信号選択方式
SU1270764A1 (ru) * 1984-07-25 1986-11-15 Военная Ордена Ленина,Ордена Октябрьской Революции И Ордена Суворова Академия Им.Ф.Э.Дзержинского Устройство дл определени выборочной медианы
JPH1155234A (ja) * 1997-07-30 1999-02-26 Fujitsu Ltd クロック周波数精度監視回路
US20030076851A1 (en) * 1998-09-24 2003-04-24 Sanjeev A. Mahajan Method and apparatus for switching a clock source from among multiple t1/e1 lines with user defined priority
US6810270B1 (en) * 2000-11-02 2004-10-26 Ericsson Inc. Providing reference signal to radio heads
CN1578197A (zh) * 2003-07-28 2005-02-09 华为技术有限公司 时钟源频率偏移检测方法

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JP3244247B2 (ja) * 1994-08-24 2002-01-07 日本電信電話株式会社 クロック信号現用予備切替方式
JPH08256136A (ja) * 1995-03-17 1996-10-01 Fujitsu Ltd 同期クロック切替装置
JP3298353B2 (ja) * 1995-03-20 2002-07-02 富士通株式会社 同期信号源選択方式
US5982831A (en) 1996-02-21 1999-11-09 Hewlett-Packard Company Feed forward method and apparatus for generating a clock signal
JP3460118B2 (ja) * 1998-08-26 2003-10-27 富士通株式会社 同期網システムのクロック管理方法及び伝送装置
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US20030012158A1 (en) * 2001-01-25 2003-01-16 Hang Jin System and method for synchronizing a base station in a distributed radio system
KR100401199B1 (ko) * 2001-09-27 2003-10-10 삼성전자주식회사 공중용 및 사설용 이동통신 시스템에서의 신호 공급 장치
JP3886392B2 (ja) * 2002-02-20 2007-02-28 Ｎｅｃエンジニアリング株式会社 クロック再生回路
US7391975B2 (en) * 2002-04-29 2008-06-24 Texas Instruments Incorporated Method of synchronizing servo timing in an optical wireless link
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JP3993508B2 (ja) * 2002-12-02 2007-10-17 株式会社エヌ・ティ・ティ・ドコモ 無線アクセスネットワークシステム、無線通信方法、同期サーバ及びノード装置
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US7539200B2 (en) * 2005-04-27 2009-05-26 Agere Systems Inc. Line-timing in packet-based networks
US7768983B2 (en) * 2005-10-04 2010-08-03 Telefonaktiebolaget Lm Ericsson (Publ) Radio network controller selection for IP-connected radio base station
EP2269362B1 (en) * 2008-04-21 2018-06-13 Telefonaktiebolaget LM Ericsson (publ) Method for enabling communication between a user equipment and an ims gateway

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6066539A (ja) * 1983-09-22 1985-04-16 Nec Corp クロック信号選択方式
SU1270764A1 (ru) * 1984-07-25 1986-11-15 Военная Ордена Ленина,Ордена Октябрьской Революции И Ордена Суворова Академия Им.Ф.Э.Дзержинского Устройство дл определени выборочной медианы
JPH1155234A (ja) * 1997-07-30 1999-02-26 Fujitsu Ltd クロック周波数精度監視回路
US20030076851A1 (en) * 1998-09-24 2003-04-24 Sanjeev A. Mahajan Method and apparatus for switching a clock source from among multiple t1/e1 lines with user defined priority
US6810270B1 (en) * 2000-11-02 2004-10-26 Ericsson Inc. Providing reference signal to radio heads
CN1578197A (zh) * 2003-07-28 2005-02-09 华为技术有限公司 时钟源频率偏移检测方法

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IEEE Standard 1588 2002 IEEE Standard for a Precision Synchronisation Protocol for Networked Measurement and Control Systems , IEEE, 8th November 2002, see especially pages 10-25, 64-76. *

Also Published As

Publication number Publication date
JP2006311559A (ja) 2006-11-09
JP5039319B2 (ja) 2012-10-03
CN1855784A (zh) 2006-11-01
US20060245453A1 (en) 2006-11-02
JP2012186831A (ja) 2012-09-27
KR20060113493A (ko) 2006-11-02
US20120218986A1 (en) 2012-08-30
US8213436B2 (en) 2012-07-03
US20090141725A1 (en) 2009-06-04
KR101234360B1 (ko) 2013-02-15
GB0607970D0 (en) 2006-05-31
US7539200B2 (en) 2009-05-26
CN1855784B (zh) 2011-04-13
US8774197B2 (en) 2014-07-08
JP5563620B2 (ja) 2014-07-30
GB2427327A (en) 2006-12-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20160421