WO1995024083A3 - Network arrangement - Google Patents

Network arrangement Download PDF

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Publication number
WO1995024083A3
WO1995024083A3 PCT/FI1995/000097 FI9500097W WO9524083A3 WO 1995024083 A3 WO1995024083 A3 WO 1995024083A3 FI 9500097 W FI9500097 W FI 9500097W WO 9524083 A3 WO9524083 A3 WO 9524083A3
Authority
WO
WIPO (PCT)
Prior art keywords
synchronization
message
internal
status
external system
Prior art date
Application number
PCT/FI1995/000097
Other languages
French (fr)
Other versions
WO1995024083A2 (en
Inventor
Jukka Kainulainen
Arto Peltomaeki
Original Assignee
Nokia Telecommunications Oy
Jukka Kainulainen
Arto Peltomaeki
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, Jukka Kainulainen, Arto Peltomaeki filed Critical Nokia Telecommunications Oy
Priority to EP95908981A priority Critical patent/EP0746919A1/en
Priority to AU17107/95A priority patent/AU1710795A/en
Priority to US08/697,000 priority patent/US6262996B1/en
Priority to JP7522545A priority patent/JPH09509803A/en
Publication of WO1995024083A2 publication Critical patent/WO1995024083A2/en
Publication of WO1995024083A3 publication Critical patent/WO1995024083A3/en

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
    • H04J3/0647—Synchronisation among TDM 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
    • H04J3/0679—Clock or time synchronisation in a network by determining clock distribution path in a network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0057—Operations, administration and maintenance [OAM]
    • H04J2203/006—Fault tolerance and recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0089—Multiplexing, e.g. coding, scrambling, SONET

Abstract

The present invention relates to a method for connecting a system (MS; MS1; MS2) utilizing message-based synchronization with an external system (ES). The message-based system comprises a plurality of nodes (1... 6, IN1, IN2) interchanging signals containing synchronization messages with information about the priority of the respective signal in the internal synchronization hierarchy of the system. To produce as flexible a connection as possible, the external system (ES) is connected to the system utilizing message-based synchronization by converting the synchronization status received from the external system into the internal synchronization status of the system (MS) using message-based synchronization in the interface node (IN1, IN2) of the system (MS) using message-based synchronization in such a manner that the level in the internal synchronization hierarchy of the message-based system as indicated by said internal synchronization status rises or falls corresponding to the rise and, correspondingly, fall of a predetermined magnitude occurring in the synchronization status of the external system. In a second embodiment, the internal synchronization status obtains a certain constant level in the internal synchronization hierarchy of the system and said constant level is used together with the synchronization status data received from the external system (ES) in selecting the source of synchronization in the message-based system.
PCT/FI1995/000097 1994-02-25 1995-02-23 Network arrangement WO1995024083A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP95908981A EP0746919A1 (en) 1994-02-25 1995-02-23 Network arrangement
AU17107/95A AU1710795A (en) 1994-02-25 1995-02-23 Network arrangement
US08/697,000 US6262996B1 (en) 1994-02-25 1995-02-23 Network arrangement
JP7522545A JPH09509803A (en) 1994-02-25 1995-02-23 Network structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI940927 1994-02-25
FI940927A FI95976C (en) 1994-02-25 1994-02-25 Network arrangement

Publications (2)

Publication Number Publication Date
WO1995024083A2 WO1995024083A2 (en) 1995-09-08
WO1995024083A3 true WO1995024083A3 (en) 1995-09-28

Family

ID=8540203

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1995/000097 WO1995024083A2 (en) 1994-02-25 1995-02-23 Network arrangement

Country Status (6)

Country Link
US (1) US6262996B1 (en)
EP (1) EP0746919A1 (en)
JP (1) JPH09509803A (en)
AU (1) AU1710795A (en)
FI (1) FI95976C (en)
WO (1) WO1995024083A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6418151B1 (en) * 1997-03-05 2002-07-09 Lucent Technologies Inc. Automatic primary reference clock switching for synchronous networks
EP0982888A1 (en) * 1998-08-28 2000-03-01 Siemens Aktiengesellschaft Telecommunication system and method for synchronizing it and sending data
US6606362B1 (en) * 1999-06-29 2003-08-12 Nortel Networks Limited Synchronization in a telecommunications network
JP3963417B2 (en) * 1999-11-19 2007-08-22 株式会社東芝 Communication method and electronic device for data synchronization processing
US7251256B1 (en) * 2000-05-18 2007-07-31 Luminous Networks, Inc. Synchronization of asynchronous networks using media access control (MAC) layer synchronization symbols
US7028204B2 (en) * 2000-09-06 2006-04-11 Schneider Automation Inc. Method and apparatus for ethernet prioritized device clock synchronization
JP2002271307A (en) * 2001-03-09 2002-09-20 Sega Corp Terminal synchronizing method, communication system, and terminal
US7656804B2 (en) * 2004-08-16 2010-02-02 Motorola, Inc. Method and apparatus for operating an AD-HOC communication system
US10320635B2 (en) * 2009-06-11 2019-06-11 Talari Networks Incorported Methods and apparatus for providing adaptive private network centralized management system timestamp correlation processes
JP6507436B2 (en) * 2014-05-04 2019-05-08 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． Synchronization signal transmission / reception method, synchronization signal transmission / reception device, and synchronization signal transmission / reception device
US10439908B2 (en) 2014-12-23 2019-10-08 Talari Networks Incorporated Methods and apparatus for providing adaptive private network centralized management system time correlated playback of network traffic

Citations (4)

* Cited by examiner, † Cited by third party
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
US4939753A (en) * 1989-02-24 1990-07-03 Rosemount Inc. Time synchronization of control networks
EP0490315A1 (en) * 1990-12-11 1992-06-17 Alcatel Business Systems Method for permanently ensuring the synchronisation of the nodes of a private telecommunication network to the best available clock, and corresponding network
WO1994011962A1 (en) * 1992-11-09 1994-05-26 Nokia Telecommunications Oy Network arrangement

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR490315A (en) 1917-08-21 1919-04-17 Thomas Adam Clayton Improvement in disinfection and parasite destruction processes
US4736393A (en) * 1986-04-16 1988-04-05 American Telephone And Telegraph Co., At&T Information Systems, Inc. Distributed timing control for a distributed digital communication system
DE3629931A1 (en) 1986-09-03 1988-03-10 Philips Patentverwaltung HIERARCHICAL SYNCHRONIZATION METHOD AND CIRCUIT ARRANGEMENT FOR SWITCHING CENTERS OF A INTERMEDIATED TELECOMMUNICATION NETWORK
US5068877A (en) * 1990-04-02 1991-11-26 At&T Bell Laboratories Method for synchronizing interconnected digital equipment
JPH0575635A (en) * 1991-09-12 1993-03-26 Hitachi Ltd Network synchronization management system and management system
US5428645A (en) * 1992-11-03 1995-06-27 International Business Machines Corporation Anonymous time synchronization method
FI93287C (en) 1993-03-16 1995-03-10 Nokia Telecommunications Oy Method for synchronizing interconnected SDH and PDH data transmission networks
US5689688A (en) * 1993-11-16 1997-11-18 International Business Machines Corporation Probabilistic anonymous clock synchronization method and apparatus for synchronizing a local time scale with a reference time scale
FI95977C (en) * 1994-02-25 1996-04-10 Nokia Telecommunications Oy Network arrangement
US5535217A (en) * 1994-12-20 1996-07-09 International Business Machines Corporation Method and apparatus for probabilistic clock synchronization with interval arithmetic

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
US4939753A (en) * 1989-02-24 1990-07-03 Rosemount Inc. Time synchronization of control networks
EP0490315A1 (en) * 1990-12-11 1992-06-17 Alcatel Business Systems Method for permanently ensuring the synchronisation of the nodes of a private telecommunication network to the best available clock, and corresponding network
WO1994011962A1 (en) * 1992-11-09 1994-05-26 Nokia Telecommunications Oy Network arrangement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, Volume 25, No. 11B, April 1983, L.S. ROGERS, "Clock Source Selection Method in Distributed Communicaion System Networks", page 6293 - page 6298. *

Also Published As

Publication number Publication date
EP0746919A1 (en) 1996-12-11
FI95976B (en) 1995-12-29
FI940927A (en) 1995-08-26
FI95976C (en) 1996-04-10
WO1995024083A2 (en) 1995-09-08
US6262996B1 (en) 2001-07-17
FI940927A0 (en) 1994-02-25
AU1710795A (en) 1995-09-18
JPH09509803A (en) 1997-09-30

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