FI103307B1 - Synkronisering av ett datakommunikationsnät - Google Patents

Synkronisering av ett datakommunikationsnät

Info

Publication number
FI103307B1
FI103307B1 FI970576A FI970576A FI103307B1 FI 103307 B1 FI103307 B1 FI 103307B1 FI 970576 A FI970576 A FI 970576A FI 970576 A FI970576 A FI 970576A FI 103307 B1 FI103307 B1 FI 103307B1
Authority
FI
Finland
Prior art keywords
communication network
network synchronization
synchronization
communication
network
Prior art date
Application number
FI970576A
Other languages
English (en)
Finnish (fi)
Other versions
FI103307B (sv
FI970576A0 (sv
FI970576A (sv
Inventor
Timo Kasurinen
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Priority to FI970576A priority Critical patent/FI103307B1/sv
Publication of FI970576A0 publication Critical patent/FI970576A0/sv
Priority to PCT/FI1998/000100 priority patent/WO1998035466A2/en
Priority to EP98902016A priority patent/EP0960493A2/en
Priority to AU58677/98A priority patent/AU5867798A/en
Priority to JP53381298A priority patent/JP2001511962A/ja
Publication of FI970576A publication Critical patent/FI970576A/sv
Application granted granted Critical
Publication of FI103307B publication Critical patent/FI103307B/sv
Publication of FI103307B1 publication Critical patent/FI103307B1/sv
Priority to US09/359,085 priority patent/US6317475B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2687—Inter base stations synchronisation
    • H04B7/269—Master/slave synchronisation
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
FI970576A 1997-02-11 1997-02-11 Synkronisering av ett datakommunikationsnät FI103307B1 (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI970576A FI103307B1 (sv) 1997-02-11 1997-02-11 Synkronisering av ett datakommunikationsnät
PCT/FI1998/000100 WO1998035466A2 (en) 1997-02-11 1998-02-03 Synchronization of telecommunications network
EP98902016A EP0960493A2 (en) 1997-02-11 1998-02-03 Synchronization of telecommunications network
AU58677/98A AU5867798A (en) 1997-02-11 1998-02-03 Synchronization of telecommunications network
JP53381298A JP2001511962A (ja) 1997-02-11 1998-02-03 テレコミュニケーションネットワークの同期
US09/359,085 US6317475B1 (en) 1997-02-11 1999-07-22 Synchronization of telecommunications network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI970576 1997-02-11
FI970576A FI103307B1 (sv) 1997-02-11 1997-02-11 Synkronisering av ett datakommunikationsnät

Publications (4)

Publication Number Publication Date
FI970576A0 FI970576A0 (sv) 1997-02-11
FI970576A FI970576A (sv) 1998-08-12
FI103307B FI103307B (sv) 1999-05-31
FI103307B1 true FI103307B1 (sv) 1999-05-31

Family

ID=8548178

Family Applications (1)

Application Number Title Priority Date Filing Date
FI970576A FI103307B1 (sv) 1997-02-11 1997-02-11 Synkronisering av ett datakommunikationsnät

Country Status (6)

Country Link
US (1) US6317475B1 (sv)
EP (1) EP0960493A2 (sv)
JP (1) JP2001511962A (sv)
AU (1) AU5867798A (sv)
FI (1) FI103307B1 (sv)
WO (1) WO1998035466A2 (sv)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9702481L (sv) * 1997-06-26 1998-10-05 Telia Ab Arrangemang för synkronisering av noder i VDSL-system
SE512169C2 (sv) * 1998-05-14 2000-02-07 Net Insight Ab Förfarande och anordning för synkronisering i ett kretskopplat nät
GB2341749A (en) * 1998-09-19 2000-03-22 Nokia Telecommunications Oy Digital network synchronisation
DE19901588A1 (de) * 1999-01-16 2000-07-20 Alcatel Sa Synchronisation eines Netzelementes in einem synchronen digitalen Nachrichtenübertragungsnetz
JP3485250B2 (ja) * 1999-02-17 2004-01-13 富士通株式会社 従属同期装置及び該従属同期装置を有するｓｄｈ装置
US6714563B1 (en) * 1999-04-26 2004-03-30 Cisco Technology, Inc. Network clock synchronization scheme
US6898211B1 (en) * 1999-06-16 2005-05-24 Cisco Technology, Inc. Scheme for maintaining synchronization in an inherently asynchronous system
GB2353173B (en) * 1999-08-10 2001-09-19 Marconi Comm Ltd Communications system
DE19943779A1 (de) * 1999-09-13 2001-03-22 Siemens Ag Anordnung zum Synchronisieren von über ein Kommunikationsnetz gekoppelten Kommunikationssystemkomponenten
GB9930132D0 (en) 1999-12-22 2000-02-09 Ericsson Telefon Ab L M Telecommunication network synchronisation
EP1235364A1 (de) * 2001-02-14 2002-08-28 Siemens Aktiengesellschaft Verfahren und Kommunikationsvorrichtung zum Synchronisieren von Funkstationen in einem unkoordinierten Kommunikationssystem, insbesondere Mobilfunksystem
US7012934B1 (en) * 2001-10-31 2006-03-14 Nortel Networks Limited Method and apparatus for detecting a network timing loop
DE10308952A1 (de) * 2003-02-28 2004-09-09 Siemens Ag Synchronisation in einem schaltbaren Datennetz
JP4080366B2 (ja) * 2003-04-01 2008-04-23 シャープ株式会社 ネットワーク端末、ネットワークシステム、ネットワーク端末の制御方法
EP1623398A1 (en) * 2003-05-07 2006-02-08 Koninklijke Philips Electronics N.V. Event detection system
EP1601124B1 (en) * 2004-05-28 2008-01-23 Hitachi, Ltd. Method and apparatus synchronizing clocks of network nodes
CN1770701A (zh) * 2004-11-03 2006-05-10 华为技术有限公司 Mesh网中时钟跟踪的实现方法
GB2421671A (en) 2004-12-22 2006-06-28 Marconi Comm Gmbh A node selects a source of timing information using network topology and the timing status of network nodes
US7505450B2 (en) * 2005-03-23 2009-03-17 Cisco Technology, Inc. Configuration of failure and acquire timeouts to facilitate recovery from failures in hierarchical mesh networks
US20080170592A1 (en) * 2007-01-11 2008-07-17 International Business Machines Corporation Almost peer-to-peer clock synchronization
US8199695B2 (en) * 2007-04-10 2012-06-12 International Business Machines Corporation Clock signal synchronization among computers in a network
CN101286835B (zh) 2007-04-11 2013-03-20 华为技术有限公司 一种时钟跟踪的方法、装置及网元设备
CN101309122B (zh) * 2007-05-17 2013-01-02 华为技术有限公司 时钟跟踪关系建立方法及时钟跟踪关系计算装置
JP5169485B2 (ja) 2008-05-26 2013-03-27 富士通株式会社 通信装置および制御方法
KR101025162B1 (ko) * 2008-06-30 2011-03-31 삼성전자주식회사 휴대단말의 디지털 저작권 관리 타임 확보 방법 및 장치
US8165169B2 (en) * 2008-12-02 2012-04-24 Adc Telecommunications, Inc. Clock priority chain level systems and methods
FR2939587B1 (fr) * 2008-12-09 2011-04-08 Alcatel Lucent Horloge pour un noeud d'un reseau a commutation de paquets et procede de synchronisation associe.
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
US8149881B2 (en) * 2009-06-26 2012-04-03 Alcatel Lucent Centralized node clock auto reconfiguration
US9178640B2 (en) * 2010-08-20 2015-11-03 Qualcomm Incorporated Determination of network synchronization
US9252904B2 (en) * 2011-06-01 2016-02-02 Coriant Operations, Inc. Method and apparatus for distributing network timing in a mesh optical network
RU2603011C1 (ru) * 2012-12-20 2016-11-20 ЭлДжи ЭЛЕКТРОНИКС ИНК. Способ и устройство для выполнения групповой связи с использованием прямой связи между терминалами в системе беспроводной связи
GB2551189B (en) * 2016-06-10 2020-04-29 Bluwireless Tech Ltd Clock synchronisation in wireless mesh communications networks

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
US2986723A (en) * 1960-02-26 1961-05-30 Bell Telephone Labor Inc Synchronization in a system of interconnected units
US4142069A (en) * 1977-06-20 1979-02-27 The United States Of America As Represented By The Secretary Of The Army Time reference distribution technique
DE3629931A1 (de) 1986-09-03 1988-03-10 Philips Patentverwaltung Hierarchisches synchronisationsverfahren und schaltungsanordnung fuer vermittlungsstellen eines vermaschten fernmeldenetzes
US4939752A (en) * 1989-05-31 1990-07-03 At&T Company Distributed timing recovery for a distributed communication system
US5068877A (en) * 1990-04-02 1991-11-26 At&T Bell Laboratories Method for synchronizing interconnected digital equipment
FR2670345B1 (fr) 1990-12-11 1994-09-30 Alcatel Business Systems Procede destine a assurer la permanence de la synchronisation des nóoeuds d'un reseau prive de telecommunications sur la meilleure des horloges disponibles et reseau correspondant.
US5428645A (en) * 1992-11-03 1995-06-27 International Business Machines Corporation Anonymous time synchronization method
FI91689C (sv) * 1992-11-09 1994-07-25 Nokia Telecommunications Oy Hierarkiskt synkroniseringsförfarande samt ett datatrafiksystem som använder meddelandebaserad synkronisering
FI92126C (sv) * 1992-11-09 1994-09-26 Nokia Telecommunications Oy Nätarrangemang
DE4446511A1 (de) 1994-12-24 1996-06-27 Sel Alcatel Ag Synchrones digitales Nachrichtenübertragungssystem mit hierarchischem Synchronisierungsnetz
GB2301991B (en) 1995-06-06 1999-06-30 Plessey Telecomm SDH Network
GB9605013D0 (en) * 1996-03-08 1996-05-08 Northern Telecom Ltd Network synchronisation
JP3681225B2 (ja) * 1996-07-31 2005-08-10 富士通株式会社 シンクロナイゼイション・メッセージ送信装置
JP3791983B2 (ja) * 1996-10-29 2006-06-28 富士通株式会社 シンクロナイゼーションメッセージによるアクティブリファレンスの切替え装置
US5901136A (en) * 1996-12-26 1999-05-04 Alcatel Usa Sourcing, L.P. System and method for controlling timing in a distributed digital cross-connect system

Also Published As

Publication number Publication date
FI103307B (sv) 1999-05-31
EP0960493A2 (en) 1999-12-01
FI970576A0 (sv) 1997-02-11
JP2001511962A (ja) 2001-08-14
WO1998035466A2 (en) 1998-08-13
FI970576A (sv) 1998-08-12
AU5867798A (en) 1998-08-26
WO1998035466A3 (en) 1998-11-19
US6317475B1 (en) 2001-11-13

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