CA2338544C - Improvements in downlink observed time difference measurements - Google Patents

Improvements in downlink observed time difference measurements Download PDF

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Publication number
CA2338544C
CA2338544C CA002338544A CA2338544A CA2338544C CA 2338544 C CA2338544 C CA 2338544C CA 002338544 A CA002338544 A CA 002338544A CA 2338544 A CA2338544 A CA 2338544A CA 2338544 C CA2338544 C CA 2338544C
Authority
CA
Canada
Prior art keywords
radio
mobile communication
communication station
time
information
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
CA002338544A
Other languages
English (en)
French (fr)
Other versions
CA2338544A1 (en
Inventor
Ari Kangas
Erik Larsson
Patrik Lundqvist
Mats Cedervall
Sven Fischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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
Priority claimed from US09/131,150 external-priority patent/US6490454B1/en
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of CA2338544A1 publication Critical patent/CA2338544A1/en
Application granted granted Critical
Publication of CA2338544C publication Critical patent/CA2338544C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/022—Means for monitoring or calibrating
    • G01S1/026—Means for monitoring or calibrating of associated receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
CA002338544A 1998-08-07 1999-07-27 Improvements in downlink observed time difference measurements Expired - Lifetime CA2338544C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09/131,150 1998-08-07
US09/131,150 US6490454B1 (en) 1998-08-07 1998-08-07 Downlink observed time difference measurements
US09/186,192 US6356763B1 (en) 1998-08-07 1998-11-04 Downlink observed time difference measurements
US09/186,192 1998-11-04
PCT/SE1999/001322 WO2000008886A1 (en) 1998-08-07 1999-07-27 Improvements in downlink observed time difference measurements

Publications (2)

Publication Number Publication Date
CA2338544A1 CA2338544A1 (en) 2000-02-17
CA2338544C true CA2338544C (en) 2010-01-12

Family

ID=26829185

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002338544A Expired - Lifetime CA2338544C (en) 1998-08-07 1999-07-27 Improvements in downlink observed time difference measurements

Country Status (9)

Country Link
EP (1) EP1103156B1 (https=)
JP (1) JP4309587B2 (https=)
CN (1) CN1127880C (https=)
AU (1) AU772999B2 (https=)
BR (1) BR9912770B1 (https=)
CA (1) CA2338544C (https=)
RU (1) RU2225079C2 (https=)
TW (1) TW475339B (https=)
WO (1) WO2000008886A1 (https=)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6490454B1 (en) 1998-08-07 2002-12-03 Telefonaktiebolaget Lm Ericsson (Publ) Downlink observed time difference measurements
US6665540B2 (en) * 2001-02-02 2003-12-16 Nokia Mobile Phones, Ltd. Method and system for locating a mobile terminal in a cellular radio network
US7363043B2 (en) * 2001-05-18 2008-04-22 Southwest Research Institute Passive GSM-based self-locating device
US6876859B2 (en) * 2001-07-18 2005-04-05 Trueposition, Inc. Method for estimating TDOA and FDOA in a wireless location system
WO2003041436A1 (en) * 2001-11-05 2003-05-15 Nokia Corporation A method for identification of base stations and for checking measurement values of an observed time difference between transmissions from base stations
CA2518635C (en) * 2003-03-11 2015-06-16 Koninklijke Philips Electronics N.V. Method for scheduling service periods in a wireless local area network (wlan)
US20070258428A1 (en) * 2006-04-24 2007-11-08 Interdigital Technology Corporation Method and apparatus for coordinating timing in a wireless local area network
CN101334463B (zh) * 2008-07-29 2010-05-12 北京航空航天大学 Gnss导航信号模拟器中时间参数的模拟方法
US8699453B2 (en) * 2009-02-02 2014-04-15 Qualcomm Incorporated Reuse of RF receive chain for hand-in assistance
TWI412777B (zh) * 2009-06-19 2013-10-21 Htc Corp 增強定位量測功能的方法及其相關通訊裝置
CN101806907B (zh) * 2010-03-12 2012-09-05 清华大学 多站多平台体系下基于相干与非相干混合的飞行器定位法
GB2539364A (en) * 2014-10-02 2016-12-21 Aeroscout Ltd Location system
TWI667908B (zh) * 2016-02-01 2019-08-01 日商日本電氣股份有限公司 Time difference measuring device, system and method
AU2019235617B2 (en) 2018-03-14 2022-10-20 Locata Corporation Pty Ltd Method and apparatus for synchronising a location network
IL305184A (en) * 2023-08-14 2025-03-01 Elta Systems Ltd Self-positioning based on cellular base stations

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3399623B2 (ja) * 1994-03-16 2003-04-21 富士通株式会社 移動局位置捕捉装置
GB9508884D0 (en) * 1995-05-02 1995-06-21 Telecom Sec Cellular Radio Ltd Cellular radio system
US5508708A (en) * 1995-05-08 1996-04-16 Motorola, Inc. Method and apparatus for location finding in a CDMA system

Also Published As

Publication number Publication date
CN1322452A (zh) 2001-11-14
AU772999B2 (en) 2004-05-13
JP4309587B2 (ja) 2009-08-05
CN1127880C (zh) 2003-11-12
AU5661799A (en) 2000-02-28
BR9912770A (pt) 2001-05-08
EP1103156B1 (en) 2011-11-30
BR9912770B1 (pt) 2014-06-17
RU2225079C2 (ru) 2004-02-27
JP2002522991A (ja) 2002-07-23
WO2000008886A1 (en) 2000-02-17
TW475339B (en) 2002-02-01
CA2338544A1 (en) 2000-02-17
EP1103156A1 (en) 2001-05-30

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Effective date: 20190729