CA2161333A1 - Cellular Telephone Location System - Google Patents

Cellular Telephone Location System

Info

Publication number
CA2161333A1
CA2161333A1 CA2161333A CA2161333A CA2161333A1 CA 2161333 A1 CA2161333 A1 CA 2161333A1 CA 2161333 A CA2161333 A CA 2161333A CA 2161333 A CA2161333 A CA 2161333A CA 2161333 A1 CA2161333 A1 CA 2161333A1
Authority
CA
Canada
Prior art keywords
cellular telephone
cell site
site
central
location system
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
CA2161333A
Other languages
French (fr)
Other versions
CA2161333C (en
Inventor
Louis A. Stilp
Curtis A. Knight
John C. Webber
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.)
Skyhook Holding Inc
Original Assignee
Louis A. Stilp
Curtis A. Knight
John C. Webber
Associated Rt, Inc.
Trueposition, Inc.
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22021766&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2161333(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Louis A. Stilp, Curtis A. Knight, John C. Webber, Associated Rt, Inc., Trueposition, Inc. filed Critical Louis A. Stilp
Publication of CA2161333A1 publication Critical patent/CA2161333A1/en
Application granted granted Critical
Publication of CA2161333C publication Critical patent/CA2161333C/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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • 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
    • G01S5/06—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
    • 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

Abstract

A cellular telephone location system for automatically recording the location of one or more mobile cellular telephones comprises three or more cell site systems (12). Each cell site system is located at a cell site of cellular telephone system. Each cell site system includes an antenna that may be mounted on the same tower or building as the antenna employed by the cellular telephone system and equipment that may be housed in the equipment enclosure of the corresponding cell site. The cell site systems are coupled via T1 communication links (14) to a central site (16). The central site may be collocated with the cellular telephone system's MTSO. The central site (16) is further coupled to a database (20), which may be remotely located from the central site and made available to subscribers.
CA002161333A 1993-05-07 1994-01-19 Cellular telephone location system Expired - Lifetime CA2161333C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/059,248 US5327144A (en) 1993-05-07 1993-05-07 Cellular telephone location system
US08/059,248 1993-05-07

Publications (2)

Publication Number Publication Date
CA2161333A1 true CA2161333A1 (en) 1994-11-24
CA2161333C CA2161333C (en) 1998-05-19

Family

ID=22021766

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002161333A Expired - Lifetime CA2161333C (en) 1993-05-07 1994-01-19 Cellular telephone location system

Country Status (15)

Country Link
US (2) US5327144A (en)
EP (1) EP0700525B1 (en)
JP (1) JP2843951B2 (en)
KR (1) KR0153589B1 (en)
AT (1) ATE165169T1 (en)
AU (1) AU677292B2 (en)
BR (1) BR9406463A (en)
CA (1) CA2161333C (en)
DE (1) DE69409645T2 (en)
HK (1) HK1010461A1 (en)
RU (1) RU2107925C1 (en)
SG (1) SG48730A1 (en)
TW (2) TW238446B (en)
WO (1) WO1994027160A1 (en)
ZA (1) ZA941019B (en)

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US7366492B1 (en) 2002-05-03 2008-04-29 Verizon Corporate Services Group Inc. Method and system for mobile location detection using handoff information

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US5327144A (en) 1994-07-05
JP2843951B2 (en) 1999-01-06
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CA2161333C (en) 1998-05-19
ATE165169T1 (en) 1998-05-15
EP0700525A4 (en) 1996-07-24
RU2107925C1 (en) 1998-03-27
WO1994027160A1 (en) 1994-11-24
AU6094094A (en) 1994-12-12
ZA941019B (en) 1994-08-25
US5608410A (en) 1997-03-04
DE69409645D1 (en) 1998-05-20
EP0700525B1 (en) 1998-04-15
KR0153589B1 (en) 1998-12-15
SG48730A1 (en) 1998-05-18
HK1010461A1 (en) 1999-06-17
BR9406463A (en) 1996-01-30
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EP0700525A1 (en) 1996-03-13
TW264595B (en) 1995-12-01

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