WO2008142815A1 - Synchronous communication system - Google Patents

Synchronous communication system Download PDF

Info

Publication number
WO2008142815A1
WO2008142815A1 PCT/JP2007/074279 JP2007074279W WO2008142815A1 WO 2008142815 A1 WO2008142815 A1 WO 2008142815A1 JP 2007074279 W JP2007074279 W JP 2007074279W WO 2008142815 A1 WO2008142815 A1 WO 2008142815A1
Authority
WO
WIPO (PCT)
Prior art keywords
synchronous
communication system
server
synchronous communication
clients
Prior art date
Application number
PCT/JP2007/074279
Other languages
French (fr)
Japanese (ja)
Inventor
Masami Kihara
Yoshifumi Sekine
Fumio Inoue
Original Assignee
Nihon University
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 Nihon University filed Critical Nihon University
Priority to JP2009515072A priority Critical patent/JPWO2008142815A1/en
Publication of WO2008142815A1 publication Critical patent/WO2008142815A1/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
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
    • H04J3/0664—Clock or time synchronisation among packet nodes using timestamps unidirectional timestamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/28—Timers or timing mechanisms used in protocols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Electric Clocks (AREA)
  • Computer And Data Communications (AREA)

Abstract

A synchronous communication system capable of high-precision synchronization without adding any hardware is provided. In the synchronous communication system, a synchronous server is synchronized with two or more clients connected to the synchronous server. The synchronous server transmits a clock counter as synchronous information to the clients. The clients compare their own clock counters with the synchronous information, obtain correction values for correcting errors in their own clock counters for the synchronous information, and apply the correction values to their own counters for synchronization with the synchronous server.
PCT/JP2007/074279 2007-05-21 2007-12-18 Synchronous communication system WO2008142815A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009515072A JPWO2008142815A1 (en) 2007-05-21 2007-12-18 Synchronous communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-133872 2007-05-21
JP2007133872 2007-05-21

Publications (1)

Publication Number Publication Date
WO2008142815A1 true WO2008142815A1 (en) 2008-11-27

Family

ID=40031537

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/074279 WO2008142815A1 (en) 2007-05-21 2007-12-18 Synchronous communication system

Country Status (2)

Country Link
JP (1) JPWO2008142815A1 (en)
WO (1) WO2008142815A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010278546A (en) * 2009-05-26 2010-12-09 Hitachi Ltd Time synchronization network and communication equipment
WO2013190602A1 (en) * 2012-06-19 2013-12-27 日本電気株式会社 Clock synchronization system, clock synchronization method, and storage medium whereupon clock synchronization program is stored

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001236134A (en) * 2000-02-24 2001-08-31 Toshiba Corp Network system
JP2003298630A (en) * 2002-04-01 2003-10-17 Mitsubishi Electric Corp Time synchronization method
JP2006313458A (en) * 2005-05-09 2006-11-16 Mitsubishi Electric Corp Time synchronization method, synchronous communication device, synchronous communication system and time synchronization program

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001236134A (en) * 2000-02-24 2001-08-31 Toshiba Corp Network system
JP2003298630A (en) * 2002-04-01 2003-10-17 Mitsubishi Electric Corp Time synchronization method
JP2006313458A (en) * 2005-05-09 2006-11-16 Mitsubishi Electric Corp Time synchronization method, synchronous communication device, synchronous communication system and time synchronization program

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010278546A (en) * 2009-05-26 2010-12-09 Hitachi Ltd Time synchronization network and communication equipment
WO2013190602A1 (en) * 2012-06-19 2013-12-27 日本電気株式会社 Clock synchronization system, clock synchronization method, and storage medium whereupon clock synchronization program is stored
US9634782B2 (en) 2012-06-19 2017-04-25 Nec Corporation Clock synchronization system, clock synchronization method, and storage medium whereupon clock synchronization program is stored

Also Published As

Publication number Publication date
JPWO2008142815A1 (en) 2010-08-05

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