WO2009024945A3 - Synchronisation method - Google Patents

Synchronisation method Download PDF

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Publication number
WO2009024945A3
WO2009024945A3 PCT/IB2008/053361 IB2008053361W WO2009024945A3 WO 2009024945 A3 WO2009024945 A3 WO 2009024945A3 IB 2008053361 W IB2008053361 W IB 2008053361W WO 2009024945 A3 WO2009024945 A3 WO 2009024945A3
Authority
WO
WIPO (PCT)
Prior art keywords
communication device
time signal
local
quality
signal
Prior art date
Application number
PCT/IB2008/053361
Other languages
French (fr)
Other versions
WO2009024945A2 (en
Inventor
Hans-Juergen Reumerman
Yunpeng Zang
Lothar Stibor
Bernhard Walke
Original Assignee
Philips Intellectual Property
Koninkl Philips Electronics Nv
Hans-Juergen Reumerman
Yunpeng Zang
Lothar Stibor
Bernhard Walke
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 Philips Intellectual Property, Koninkl Philips Electronics Nv, Hans-Juergen Reumerman, Yunpeng Zang, Lothar Stibor, Bernhard Walke filed Critical Philips Intellectual Property
Publication of WO2009024945A2 publication Critical patent/WO2009024945A2/en
Publication of WO2009024945A3 publication Critical patent/WO2009024945A3/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
    • H04J3/0641—Change of the master or reference, e.g. take-over or failure of the master
    • 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
    • H04J3/0644—External master-clock

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Electric Clocks (AREA)

Abstract

The present invention relates to a method of synchronising a first communication device with a second communication device in a radio communication system, where the first and second communication devices comprise local clocks for obtaining local time signals. In the method the first communication device first receives (509) periodically a beacon signal from the second communication device, the beacon signal comprising a time signal of the second communication device and the quality of the time signal. Then the first communication device determines (512) quality of the local clock time signal of the first communication device, and determines (513) whether the received time signal is of higher quality than the local time signal of the first communication device, and in case the received time signal is of higher quality, then corrects the accuracy of the local clock of the first communication device.
PCT/IB2008/053361 2007-08-22 2008-08-21 Synchronisation method WO2009024945A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07301317.9 2007-08-22
EP07301317 2007-08-22

Publications (2)

Publication Number Publication Date
WO2009024945A2 WO2009024945A2 (en) 2009-02-26
WO2009024945A3 true WO2009024945A3 (en) 2009-04-30

Family

ID=40328741

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/053361 WO2009024945A2 (en) 2007-08-22 2008-08-21 Synchronisation method

Country Status (2)

Country Link
TW (1) TW200926660A (en)
WO (1) WO2009024945A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8533355B2 (en) * 2009-11-02 2013-09-10 International Business Machines Corporation Techniques for improved clock offset measuring
JP5990009B2 (en) * 2012-02-23 2016-09-07 キヤノン株式会社 Information processing apparatus, control method thereof, and program
ITTO20120493A1 (en) * 2012-06-06 2013-12-07 Selex Elsag Spa TRANSMISSION METHOD BETWEEN KNOTS OF A COMMUNICATION NETWORK MANET OPERATING IN A HF BAND WITH SHARING OF THE TDMA-TYPE RADIO CHANNEL
CN103442389B (en) * 2013-05-28 2016-08-10 大连理工大学 Changing method based on IEEE80211p in VANET
DE102013221321B4 (en) 2013-10-21 2018-07-19 Deutsches Zentrum für Luft- und Raumfahrt e.V. Method for synchronizing road users on a common timebase
CN105792278B (en) * 2016-05-10 2019-03-05 大连理工大学 A kind of VANET control channel joint jamming control method towards safety index

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1601124A1 (en) * 2004-05-28 2005-11-30 Hitachi, Ltd. Method and apparatus synchronizing clock of network nodes
US20060030343A1 (en) * 2002-10-28 2006-02-09 Andre Ebner Method for decentralized synchronization in a self-organizing radio communication system
US7103124B1 (en) * 1999-12-30 2006-09-05 Telefonaktiebolaget Lm Ericsson (Publ) Synchronization of nodes
US20070177572A1 (en) * 2006-01-31 2007-08-02 Werenka Leon K Method and system for reporting synchronization status in a network of RF receivers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7103124B1 (en) * 1999-12-30 2006-09-05 Telefonaktiebolaget Lm Ericsson (Publ) Synchronization of nodes
US20060030343A1 (en) * 2002-10-28 2006-02-09 Andre Ebner Method for decentralized synchronization in a self-organizing radio communication system
EP1601124A1 (en) * 2004-05-28 2005-11-30 Hitachi, Ltd. Method and apparatus synchronizing clock of network nodes
US20070177572A1 (en) * 2006-01-31 2007-08-02 Werenka Leon K Method and system for reporting synchronization status in a network of RF receivers

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
"High Rate Ultra Wideband PHY and MAC Standard [ECMA-368/December 2005, modified]; ETSI TS 102 455", ETSI STANDARDS, LIS, SOPHIA ANTIPOLIS CEDEX, FRANCE, vol. ECMA, no. V1.1.1, 1 January 2006 (2006-01-01), XP014032371, ISSN: 0000-0001 *
DAI H ET AL: "TSYNC: A LIGHTWEIGHT BIDIRECTIONAL TIME SYNCHRONIZATION SERVICE FOR WIRELESS SENSOR NETWORKS", MOBILE COMPUTING AND COMMUNICATIONS REVIEW, ACM, NEW YORK, NY, US, vol. 8, no. 1, 1 January 2004 (2004-01-01), pages 125 - 139, XP001504365, ISSN: 1091-1669 *
ETSI: "High Rate Ultra Wideband PHY and MAC Standard [ECMA-368, modified ED. 1", INTERNET CITATION, - December 2005 (2005-12-01), pages 1 - 39, XP002496814, Retrieved from the Internet <URL:http://pda.etsi.org/pda/AQuery.asp> [retrieved on 20080922] *
STOVER H A: "SURVIVABLE TIMING CAPABILITY FOR A WORLDWIDE MILITARY DIGITAL COMMUNICATION SYSTEM", IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, IEEE SERVICE CENTER, PISCATAWAY, US, vol. SAC-03, no. 5, 1 September 1985 (1985-09-01), pages 792 - 800, XP000806487, ISSN: 0733-8716 *

Also Published As

Publication number Publication date
WO2009024945A2 (en) 2009-02-26
TW200926660A (en) 2009-06-16

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