[go: up one dir, main page]

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Computer And Data Communications (AREA)

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
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
US7196660B2 (en) 2000-11-17 2007-03-27 Global Locate, Inc Method and system for determining time in a satellite positioning system
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
US7895303B2 (en) 2007-01-31 2011-02-22 International Business Machines Corporation Server time protocol control messages and methods
US7783913B2 (en) 2007-01-31 2010-08-24 International Business Machines Corporation Facilitating recovery 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
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
US7783736B2 (en) 2007-01-31 2010-08-24 International Business Machines Corporation Definition of an active stratum-1 server in a coordinated timing network
US7797414B2 (en) 2007-01-31 2010-09-14 International Business Machines Corporation Establishing a logical path between servers 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
US8416811B2 (en) 2008-04-10 2013-04-09 International Business Machines Corporation Coordinated timing network having servers of different capabilities
US7925916B2 (en) 2008-04-10 2011-04-12 International Business Machines Corporation Failsafe recovery facility in a coordinated timing network
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
CN102598556B (en) * 2009-10-29 2016-01-20 瑞典爱立信有限公司 For the method and apparatus of 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
WO2014022813A1 (en) 2012-08-02 2014-02-06 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
WO2001095550A3 (en) 2002-05-02
WO2001095550A2 (en) 2001-12-13
NO20002884D0 (en) 2000-06-06
AU2001282686A1 (en) 2001-12-17

Similar Documents

Publication Publication Date Title
NO20002884L (en) Method and apparatus for distributing time information in a computer network
CN102938676B (en) Time synchronizing method, apparatus and system
US7283568B2 (en) Methods, systems and computer program products for synchronizing clocks of nodes on a computer network
US9407389B2 (en) Communication system and time synchronization method
EP2506470B1 (en) Method, apparatus and system for time distribution in a telecommunications network
CN101164264B (en) Method and device for synchronising two bus systems, and arrangement consisting of two bus systems
AU2001240986A1 (en) Multi-portal bridge for providing network connectivity
WO2003044609A3 (en) Real time control of hardware and software via communications network
US20140269672A1 (en) Distributed two-step clock
JPH0311699B2 (en)
FI20010617A0 (en) Application data synchronization in a communication system
US9288002B2 (en) Method for monitoring and managing data networks
KR940010557A (en) Apparatus for providing synchronization of base station transmitters in a mobile communication system
EP1417785A4 (en) System and method for synchronizing telecom-related clocks in ethernet-based passive optical access network
WO2006026683A3 (en) Message synchronization over a stochastic network
CN106712885B (en) Clock synchronizing method, the network equipment and network system
BRPI0710939A2 (en) system and remote test method in loopback mode using mgcp / ncs
CN109921871A (en) A kind of method for synchronizing time, device and network system
JP2012525046A (en) Add and drop elements for NTP on-path support and interoperability method between NTP domain and IEEE-1588 protocol domain
KR100569038B1 (en) Method and apparatus for distributing timing data across a packet network
US20100254411A1 (en) Network synchronization over ip networks
CN107888315A (en) A kind of method for synchronizing time
EP3883153A1 (en) System and method of synchronizing a distributed clock in a packet-compatible network
JP7207545B2 (en) TIME SYNCHRONIZATION DEVICE, TIME SYNCHRONIZATION METHOD, AND PROGRAM
JP2001036538A (en) Time synchronization method and device

Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application