CA2367572A1 - Method and system for locating a mobile subscriber in a cdma communication system - Google Patents

Method and system for locating a mobile subscriber in a cdma communication system Download PDF

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Publication number
CA2367572A1
CA2367572A1 CA002367572A CA2367572A CA2367572A1 CA 2367572 A1 CA2367572 A1 CA 2367572A1 CA 002367572 A CA002367572 A CA 002367572A CA 2367572 A CA2367572 A CA 2367572A CA 2367572 A1 CA2367572 A1 CA 2367572A1
Authority
CA
Canada
Prior art keywords
base station
code sequence
subscriber unit
signal
chip code
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.)
Granted
Application number
CA002367572A
Other languages
French (fr)
Other versions
CA2367572C (en
Inventor
David K. Mesecher
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.)
InterDigital Technology Corp
Original Assignee
Interdigital Technology Corporation
David K. Mesecher
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 Interdigital Technology Corporation, David K. Mesecher filed Critical Interdigital Technology Corporation
Priority to CA2489816A priority Critical patent/CA2489816C/en
Publication of CA2367572A1 publication Critical patent/CA2367572A1/en
Application granted granted Critical
Publication of CA2367572C publication Critical patent/CA2367572C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • G01S5/0205—Details
    • G01S5/0218—Multipath in signal reception
    • 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
    • G01S5/12—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 by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial

Abstract

The invention determines the geographic location of a subscriber unit within a CDMA communication system. At least one base station transmits a spread spectrum signal with a chip code sequence unique to that base station. A subscriber unit receives the base station signal and transmits a spread spectrum signal wiht a unique chip code sequence time synchronized with the chip code sequence of the received base station signal. The base station receives the subscriber unit signal and compares the chip code sequence of the received subscriber unit singal with the chip code sequence signal transmitted by the base station to determine the location of the subscriber unit.
CA002367572A 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system Expired - Fee Related CA2367572C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2489816A CA2489816C (en) 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/274,081 US6603800B1 (en) 1999-03-22 1999-03-22 CDMA location
US09/274,081 1999-03-22
PCT/US1999/020257 WO2000057661A1 (en) 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2489816A Division CA2489816C (en) 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system

Publications (2)

Publication Number Publication Date
CA2367572A1 true CA2367572A1 (en) 2000-09-28
CA2367572C CA2367572C (en) 2005-03-22

Family

ID=23046682

Family Applications (3)

Application Number Title Priority Date Filing Date
CA2489816A Expired - Fee Related CA2489816C (en) 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system
CA2767090A Abandoned CA2767090A1 (en) 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system
CA002367572A Expired - Fee Related CA2367572C (en) 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CA2489816A Expired - Fee Related CA2489816C (en) 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system
CA2767090A Abandoned CA2767090A1 (en) 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system

Country Status (20)

Country Link
US (4) US6603800B1 (en)
EP (3) EP1163819B1 (en)
JP (3) JP3765984B2 (en)
KR (1) KR100454309B1 (en)
CN (1) CN1189056C (en)
AT (2) ATE282935T1 (en)
AU (1) AU756930B2 (en)
BR (1) BR9917225B1 (en)
CA (3) CA2489816C (en)
DE (2) DE69922054T2 (en)
DK (1) DK1513366T3 (en)
ES (2) ES2316914T3 (en)
HK (2) HK1041757B (en)
ID (1) ID30242A (en)
IL (2) IL145283A0 (en)
MX (1) MXPA01009520A (en)
NO (2) NO326457B1 (en)
SG (2) SG126694A1 (en)
TW (1) TW478285B (en)
WO (1) WO2000057661A1 (en)

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US20090017839A1 (en) * 2007-07-11 2009-01-15 Broadcom Corporation Wireless network with enhanced security by real-time identification of a location of a received packet source
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KR100979623B1 (en) 2009-05-27 2010-09-01 서울대학교산학협력단 Positioning system and method based on radio communication appratus comprising multiple antenna
KR20120086781A (en) * 2011-01-27 2012-08-06 삼성전자주식회사 Method and apparatus for reporting location of mobile station in wireless communication system
CN102688566B (en) * 2011-03-24 2014-06-18 鸿富锦精密工业（深圳）有限公司 Fire escape guiding system and method
JP5595362B2 (en) * 2011-09-28 2014-09-24 株式会社日立製作所 Terminal position estimation system and terminal position estimation method
CN103116157B (en) * 2013-02-06 2015-01-28 浙江大学 Plasma sonar buoy
CN103442434B (en) * 2013-08-20 2016-03-02 京信通信系统（中国）有限公司 A kind of personnel positioning method, Apparatus and system be applied in tunnel environment
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EP3993521A1 (en) * 2020-11-02 2022-05-04 Nokia Solutions and Networks Oy An apparatus and method for time synchronization

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Also Published As

Publication number Publication date
BR9917225A (en) 2001-12-26
EP1163819B1 (en) 2004-11-17
ID30242A (en) 2001-11-15
ATE282935T1 (en) 2004-12-15
HK1076343A1 (en) 2006-01-13
NO20083541L (en) 2001-10-12
KR20020006527A (en) 2002-01-19
US7116701B2 (en) 2006-10-03
KR100454309B1 (en) 2004-10-26
CA2367572C (en) 2005-03-22
DK1513366T3 (en) 2009-02-16
US6748008B2 (en) 2004-06-08
WO2000057661A1 (en) 2000-09-28
CN1189056C (en) 2005-02-09
EP1163819A1 (en) 2001-12-19
IL145283A0 (en) 2002-06-30
US6603800B1 (en) 2003-08-05
CA2767090A1 (en) 2000-09-28
JP2002540691A (en) 2002-11-26
AU756930B2 (en) 2003-01-30
JP2006094538A (en) 2006-04-06
SG127676A1 (en) 2006-12-29
US20020136266A1 (en) 2002-09-26
IL145283A (en) 2006-07-05
EP1513366A1 (en) 2005-03-09
US6798824B2 (en) 2004-09-28
US20020141484A1 (en) 2002-10-03
AU5806999A (en) 2000-10-09
HK1041757A1 (en) 2002-07-19
EP1988736A3 (en) 2008-12-10
ES2316914T3 (en) 2009-04-16
CN1338193A (en) 2002-02-27
DE69922054D1 (en) 2004-12-23
EP1513366B1 (en) 2008-11-05
DE69922054T2 (en) 2005-10-27
NO20014539L (en) 2001-10-12
US20040208237A1 (en) 2004-10-21
TW478285B (en) 2002-03-01
CA2489816C (en) 2012-04-10
BR9917225B1 (en) 2014-09-23
MXPA01009520A (en) 2002-05-14
NO326457B1 (en) 2008-12-08
JP2011002459A (en) 2011-01-06
CA2489816A1 (en) 2000-09-28
SG126694A1 (en) 2006-11-29
JP3765984B2 (en) 2006-04-12
DE69939884D1 (en) 2008-12-18
ATE413782T1 (en) 2008-11-15
HK1041757B (en) 2005-06-30
NO20014539D0 (en) 2001-09-18
ES2232173T3 (en) 2005-05-16
EP1988736A2 (en) 2008-11-05

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Effective date: 20180904