NO20002884L - Method and apparatus for distributing time information in a computer network - Google Patents

Method and apparatus for distributing time information in a computer network

Info

Publication number
NO20002884L
NO20002884L NO20002884A NO20002884A NO20002884L NO 20002884 L NO20002884 L NO 20002884L NO 20002884 A NO20002884 A NO 20002884A NO 20002884 A NO20002884 A NO 20002884A NO 20002884 L NO20002884 L NO 20002884L
Authority
NO
Norway
Prior art keywords
time
network
network element
time update
servers
Prior art date
Application number
NO20002884A
Other languages
Norwegian (no)
Other versions
NO20002884D0 (en
Inventor
Oeyvind Holmeide
Lennart Liljestroem
Original Assignee
Ontime Networks As
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 Ontime Networks As filed Critical Ontime Networks As
Priority to NO20002884A priority Critical patent/NO20002884L/en
Publication of NO20002884D0 publication Critical patent/NO20002884D0/en
Priority to AU2001282686A priority patent/AU2001282686A1/en
Priority to PCT/NO2001/000234 priority patent/WO2001095550A2/en
Publication of NO20002884L publication Critical patent/NO20002884L/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
    • H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
    • 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
    • H04J3/0673—Clock or time synchronisation among packet nodes using intermediate nodes, e.g. modification of a received timestamp before further transmission to the next packet node, e.g. including internal delay time or residence time into the packet

Abstract

Den foreliggende oppfinnelsen vedrører et integrert nettverkselement og tidsserver for distribusjon av tidsinformasjon i et datamaskinnettverk. Nettverkselementet omfatter midler for å rute datapakker mellom kommunikasjonsporter, såvel som en lokal klokke og midler for å generere tidsoppdateringsforespørselspakker og tidsoppdaterings- svarpakker. Den tette integrasjon av kommunikasjonstjenester og tidstjenester setter det integrerte nettverkselementet og tidsserver i stand til å distribuere tidsoppdateringsinformasjon samtidig med at unøyaktigheter som resulterer fra svitsjing eller rutingsoperasjoner unngås. Det er også beskrevet en fremgangsmåte for å synkronisere de lokale klokker for noder i et kommunikasjonsnettverk, som benytter seg av egenskapene for det integrerte nettverkselement og tidsserver. Fremgangsmåten tilveiebringer automatisk konfigurering av en tidsoppdateringsstruktur i nettverket, slik at tidsoppdateringsinformasjonen distribueres fra en eller flere master-tidsservere, med integrerte nettverkselementer og tidsservere virkende som slave-tidsservere som sender tidsoppdateringsinformasjonen videre gjennom nettverket.The present invention relates to an integrated network element and time server for distributing time information in a computer network. The network element comprises means for routing data packets between communication ports, as well as a local clock, and means for generating time update request packets and time update response packets. The close integration of communication services and time services enables the integrated network element and time server to distribute time update information while avoiding inaccuracies resulting from switching or routing operations. A method is also described for synchronizing the local nodes for nodes in a communication network, which utilizes the properties of the integrated network element and time server. The method provides automatic configuration of a time update structure on the network so that the time update information is distributed from one or more master time servers, with integrated network elements and time servers acting as slave time servers which pass the time update information through the network.

NO20002884A 2000-06-06 2000-06-06 Method and apparatus for distributing time information in a computer network NO20002884L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NO20002884A NO20002884L (en) 2000-06-06 2000-06-06 Method and apparatus for distributing time information in a computer network
AU2001282686A AU2001282686A1 (en) 2000-06-06 2001-06-06 Distributing time information
PCT/NO2001/000234 WO2001095550A2 (en) 2000-06-06 2001-06-06 Distributing time information in a communication network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20002884A NO20002884L (en) 2000-06-06 2000-06-06 Method and apparatus for distributing time information in a computer network

Publications (2)

Publication Number Publication Date
NO20002884D0 NO20002884D0 (en) 2000-06-06
NO20002884L true NO20002884L (en) 2001-12-07

Family

ID=19911231

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20002884A NO20002884L (en) 2000-06-06 2000-06-06 Method and apparatus for distributing time information in a computer network

Country Status (3)

Country Link
AU (1) AU2001282686A1 (en)
NO (1) NO20002884L (en)
WO (1) WO2001095550A2 (en)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7196660B2 (en) 2000-11-17 2007-03-27 Global Locate, Inc Method and system for determining time in a satellite positioning system
US6937187B2 (en) 2000-11-17 2005-08-30 Global Locate, Inc. Method and apparatus for forming a dynamic model to locate position of a satellite receiver
US7058149B2 (en) 2001-12-14 2006-06-06 Freescale Semiconductor, Inc. System for providing a calibrated clock and methods thereof
US7251199B2 (en) 2001-12-24 2007-07-31 Agilent Technologies, Inc. Distributed system time synchronization including a timing signal path
AT411948B (en) 2002-06-13 2004-07-26 Fts Computertechnik Gmbh COMMUNICATION PROCESS AND APPARATUS FOR TRANSMITTING TIME-CONTROLLED AND EVENT-CONTROLLED ETHERNET MESSAGES
DE10249296A1 (en) * 2002-10-22 2004-05-06 Jetter Ag Procedure for the synchronization of participants in a network
DE10260807B4 (en) * 2002-12-23 2007-07-05 Siemens Ag Transmission method for a time reference via a transmission medium and timer block corresponding thereto
US9412123B2 (en) 2003-07-01 2016-08-09 The 41St Parameter, Inc. Keystroke analysis
US10999298B2 (en) 2004-03-02 2021-05-04 The 41St Parameter, Inc. Method and system for identifying users and detecting fraud by use of the internet
DE102004012207B3 (en) * 2004-03-12 2005-10-06 Siemens Ag Synchronization of base stations over a network
JP4161936B2 (en) 2004-04-27 2008-10-08 ソニー株式会社 Time setting system, time setting method
US7633870B2 (en) 2005-04-18 2009-12-15 Symmetricom, Inc. Network forwarding device and method that forward timing packets through the device with a constant delay
WO2007001394A2 (en) * 2005-06-27 2007-01-04 The 41St Parameter, Inc. Method and system for identifying users and detecting fraud by use of the internet
US8938671B2 (en) 2005-12-16 2015-01-20 The 41St Parameter, Inc. Methods and apparatus for securely displaying digital images
US11301585B2 (en) 2005-12-16 2022-04-12 The 41St Parameter, Inc. Methods and apparatus for securely displaying digital images
US8315274B2 (en) 2006-03-29 2012-11-20 Honeywell International Inc. System and method for supporting synchronous system communications and operations
US8151327B2 (en) 2006-03-31 2012-04-03 The 41St Parameter, Inc. Systems and methods for detection of session tampering and fraud prevention
US7899894B2 (en) * 2006-08-30 2011-03-01 International Business Machines Corporation Coordinated timing network configuration parameter update procedure
EP1931101A1 (en) 2006-12-05 2008-06-11 Abb Research Ltd. Time synchronisation in a computer based process control system
US9112626B2 (en) 2007-01-31 2015-08-18 International Business Machines Corporation Employing configuration information to determine the role of a server in a coordinated timing network
US8738792B2 (en) 2007-01-31 2014-05-27 International Business Machines Corporation Server time protocol messages and methods
US7797414B2 (en) 2007-01-31 2010-09-14 International Business Machines Corporation Establishing a logical path between servers in a coordinated timing network
US7689718B2 (en) 2007-01-31 2010-03-30 International Business Machines Corporation Channel subsystem server time protocol commands and system therefor
US7779109B2 (en) * 2007-01-31 2010-08-17 International Business Machines Corporation Facilitating synchronization of servers in a coordinated timing network
US7783913B2 (en) 2007-01-31 2010-08-24 International Business Machines Corporation Facilitating recovery in a coordinated timing network
US9060012B2 (en) 2007-09-26 2015-06-16 The 41St Parameter, Inc. Methods and apparatus for detecting fraud with time based computer tags
GB2454937A (en) * 2007-11-23 2009-05-27 Ubiquisys Ltd Acquiring time references for a telecommunications basestation from a time server
US7925916B2 (en) 2008-04-10 2011-04-12 International Business Machines Corporation Failsafe recovery facility in a coordinated timing network
US8416811B2 (en) 2008-04-10 2013-04-09 International Business Machines Corporation Coordinated timing network having servers of different capabilities
US9390384B2 (en) 2008-07-01 2016-07-12 The 41 St Parameter, Inc. Systems and methods of sharing information through a tagless device consortium
US7873862B2 (en) 2008-10-21 2011-01-18 International Business Machines Corporation Maintaining a primary time server as the current time server in response to failure of time code receivers of the primary time server
US9112850B1 (en) 2009-03-25 2015-08-18 The 41St Parameter, Inc. Systems and methods of sharing information through a tag-based consortium
EP2497211B1 (en) 2009-10-29 2016-12-28 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for optimizing packet timing transport
US9361597B2 (en) 2010-10-19 2016-06-07 The 41St Parameter, Inc. Variable risk engine
US10754913B2 (en) 2011-11-15 2020-08-25 Tapad, Inc. System and method for analyzing user device information
US9633201B1 (en) 2012-03-01 2017-04-25 The 41St Parameter, Inc. Methods and systems for fraud containment
US9521551B2 (en) 2012-03-22 2016-12-13 The 41St Parameter, Inc. Methods and systems for persistent cross-application mobile device identification
EP2880619A1 (en) 2012-08-02 2015-06-10 The 41st Parameter, Inc. Systems and methods for accessing records via derivative locators
WO2014078569A1 (en) 2012-11-14 2014-05-22 The 41St Parameter, Inc. Systems and methods of global identification
US10902327B1 (en) 2013-08-30 2021-01-26 The 41St Parameter, Inc. System and method for device identification and uniqueness
US9910419B2 (en) 2013-09-09 2018-03-06 Harnischfeger Technologies, Inc. System and method of synchronizing time between multiple systems
US10091312B1 (en) 2014-10-14 2018-10-02 The 41St Parameter, Inc. Data structures for intelligently resolving deterministic and probabilistic device identifiers to device profiles and/or groups
JP6625842B2 (en) * 2015-07-28 2019-12-25 ソフトバンク株式会社 Communication device, system and method
US10447532B2 (en) 2015-10-23 2019-10-15 International Business Machines Corporation Non-disruptively merging coordinated timing networks
US20180109369A1 (en) * 2016-10-14 2018-04-19 General Electric Technology Gmbh Systems and methods for synchronizing time sources within a protection zone of a digital power substation

Also Published As

Publication number Publication date
WO2001095550A2 (en) 2001-12-13
NO20002884D0 (en) 2000-06-06
AU2001282686A1 (en) 2001-12-17
WO2001095550A3 (en) 2002-05-02

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