TW475339B - Improvements in downlink observed time difference measurements - Google Patents

Improvements in downlink observed time difference measurements Download PDF

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Publication number
TW475339B
TW475339B TW88113177A TW88113177A TW475339B TW 475339 B TW475339 B TW 475339B TW 88113177 A TW88113177 A TW 88113177A TW 88113177 A TW88113177 A TW 88113177A TW 475339 B TW475339 B TW 475339B
Authority
TW
Taiwan
Prior art keywords
time
radio
mobile communication
information
communication station
Prior art date
Application number
TW88113177A
Other languages
English (en)
Chinese (zh)
Inventor
Erik Larsson
Ari Kangas
Sven Fischer
Patrik Lundqvist
Mats Cedervall
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of TW475339B publication Critical patent/TW475339B/zh

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)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
TW88113177A 1998-08-07 1999-08-02 Improvements in downlink observed time difference measurements TW475339B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (1)

Publication Number Publication Date
TW475339B true TW475339B (en) 2002-02-01

Family

ID=26829185

Family Applications (1)

Application Number Title Priority Date Filing Date
TW88113177A TW475339B (en) 1998-08-07 1999-08-02 Improvements in downlink observed time difference measurements

Country Status (9)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (14)

* 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
GB2392801B (en) * 2001-11-05 2005-08-17 Nokia Corp A method for identification of base stations and for checking measurement values of an observed time difference between transmissions from base stations
MXPA05009609A (es) * 2003-03-11 2005-11-04 Koninkl Philips Electronics Nv Metodo para programar periodos de servicio en la red de area local inalambrica (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
US8725182B2 (en) 2009-06-19 2014-05-13 Htc Corporation Method of enhancing positioning measurement and related communication device
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
SG11202008665WA (en) * 2018-03-14 2020-10-29 Locata Corp 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
CA2338544A1 (en) 2000-02-17
CA2338544C (en) 2010-01-12
WO2000008886A1 (en) 2000-02-17
RU2225079C2 (ru) 2004-02-27
BR9912770A (pt) 2001-05-08
EP1103156A1 (en) 2001-05-30
EP1103156B1 (en) 2011-11-30
BR9912770B1 (pt) 2014-06-17
AU5661799A (en) 2000-02-28
CN1322452A (zh) 2001-11-14
AU772999B2 (en) 2004-05-13
CN1127880C (zh) 2003-11-12
JP2002522991A (ja) 2002-07-23
JP4309587B2 (ja) 2009-08-05

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