CA2489816A1 - 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
CA2489816A1
CA2489816A1 CA002489816A CA2489816A CA2489816A1 CA 2489816 A1 CA2489816 A1 CA 2489816A1 CA 002489816 A CA002489816 A CA 002489816A CA 2489816 A CA2489816 A CA 2489816A CA 2489816 A1 CA2489816 A1 CA 2489816A1
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CA
Canada
Prior art keywords
spread spectrum
spectrum signal
antennas
code
received
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
CA002489816A
Other languages
French (fr)
Other versions
CA2489816C (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
David K. Mesecher
Interdigital Technology Corporation
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 David K. Mesecher, Interdigital Technology Corporation filed Critical David K. Mesecher
Priority to CA2767090A priority Critical patent/CA2767090A1/en
Publication of CA2489816A1 publication Critical patent/CA2489816A1/en
Application granted granted Critical
Publication of CA2489816C publication Critical patent/CA2489816C/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 present inventation provides a base station comprising: a plurality of antennas, each of the antennas separated by a known distance; means for transmitting a first spread spectrum signal having a first code; means for receiving, using the plurality of antennas, a second spread spectrum signal having a second code, the second spread spectrum signal time synchronized with the first spread spectrum signal; means for making a distance determination based on in part a timing difference between the second code of the received second spread spectrum signal and the first code of the base station's transmitted first spread spectrum signal; means for comparing a phase difference of a carrier signal of the second spread spectrum signal as received by each of the plurality of antennas; and means for determining an angle of the received second spread spectrum signal using the known distance between the antennas and the phase difference; and means for determining a location of a source of the second spread spectrum signal using the determined angle and the distance determination.

Claims (3)

1. A base station comprising:
a plurality of antennas, each of the antennas separated by a known distance;
means for transmitting a first spread spectrum signal having a first code;
means for receiving, using the plurality of antennas, a second spread spectrum signal having a second code, the second spread spectrum signal time synchronized with the first spread spectrum signal;
means for making a distance determination based on in part a timing difference between the second code of the received second spread spectrum signal and the first code of the base station's transmitted first spread spectrum signal;
means for comparing a phase difference of a carrier signal of the second spread spectrum signal as received by each of the plurality of antennas;
means for determining an angle of the received second spread spectrum signal using the known distance between the antennas and the phase difference; and means for determining a location of a source of the second spread spectrum signal using the determined angle and the distance determination.
2. The base station of claim 1 comprising means for analyzing an impulse response of multipath components of the second spread spectrum signal to determine a first received component of the second spread spectrum signal and the determined first received component is used to make the distance determination.
3. The base station of claim 1 or 2 wherein the first spread spectrum signal is a pilot signal.
CA2489816A 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system Expired - Fee Related CA2489816C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2767090A CA2767090A1 (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 1999-03-22
US09/274,081 US6603800B1 (en) 1999-03-22 1999-03-22 CDMA location
CA002367572A CA2367572C (en) 1999-03-22 1999-09-03 Method and system for locating a mobile subscriber in a cdma communication system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002367572A Division CA2367572C (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
CA2767090A Division CA2767090A1 (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
CA2489816A1 true CA2489816A1 (en) 2000-09-28
CA2489816C CA2489816C (en) 2012-04-10

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 After (2)

Application Number Title Priority Date Filing Date
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

Country Status (20)

Country Link
US (4) US6603800B1 (en)
EP (3) EP1513366B1 (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) DE69939884D1 (en)
DK (1) DK1513366T3 (en)
ES (2) ES2232173T3 (en)
HK (2) HK1041757B (en)
ID (1) ID30242A (en)
IL (2) IL145283A0 (en)
MX (1) MXPA01009520A (en)
NO (2) NO326457B1 (en)
SG (2) SG127676A1 (en)
TW (1) TW478285B (en)
WO (1) WO2000057661A1 (en)

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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
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Also Published As

Publication number Publication date
ES2316914T3 (en) 2009-04-16
NO20083541L (en) 2001-10-12
EP1163819B1 (en) 2004-11-17
HK1041757A1 (en) 2002-07-19
ID30242A (en) 2001-11-15
SG126694A1 (en) 2006-11-29
CN1189056C (en) 2005-02-09
AU5806999A (en) 2000-10-09
IL145283A0 (en) 2002-06-30
CA2367572C (en) 2005-03-22
NO20014539L (en) 2001-10-12
ES2232173T3 (en) 2005-05-16
KR20020006527A (en) 2002-01-19
US20040208237A1 (en) 2004-10-21
US20020136266A1 (en) 2002-09-26
EP1513366B1 (en) 2008-11-05
JP2006094538A (en) 2006-04-06
US6603800B1 (en) 2003-08-05
JP2002540691A (en) 2002-11-26
TW478285B (en) 2002-03-01
MXPA01009520A (en) 2002-05-14
WO2000057661A1 (en) 2000-09-28
US6748008B2 (en) 2004-06-08
CA2767090A1 (en) 2000-09-28
US7116701B2 (en) 2006-10-03
NO20014539D0 (en) 2001-09-18
DE69939884D1 (en) 2008-12-18
CA2367572A1 (en) 2000-09-28
DE69922054D1 (en) 2004-12-23
ATE282935T1 (en) 2004-12-15
ATE413782T1 (en) 2008-11-15
KR100454309B1 (en) 2004-10-26
HK1041757B (en) 2005-06-30
EP1988736A3 (en) 2008-12-10
US6798824B2 (en) 2004-09-28
HK1076343A1 (en) 2006-01-13
EP1988736A2 (en) 2008-11-05
IL145283A (en) 2006-07-05
AU756930B2 (en) 2003-01-30
US20020141484A1 (en) 2002-10-03
DK1513366T3 (en) 2009-02-16
JP2011002459A (en) 2011-01-06
EP1163819A1 (en) 2001-12-19
NO326457B1 (en) 2008-12-08
BR9917225B1 (en) 2014-09-23
DE69922054T2 (en) 2005-10-27
CN1338193A (en) 2002-02-27
JP3765984B2 (en) 2006-04-12
CA2489816C (en) 2012-04-10
BR9917225A (en) 2001-12-26
EP1513366A1 (en) 2005-03-09
SG127676A1 (en) 2006-12-29

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Effective date: 20180904