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MX9701205A - Method and apparatus for determining the location of a mobile telephone. - Google Patents

Method and apparatus for determining the location of a mobile telephone.

Info

Publication number
MX9701205A
MX9701205A MX9701205A MX9701205A MX9701205A MX 9701205 A MX9701205 A MX 9701205A MX 9701205 A MX9701205 A MX 9701205A MX 9701205 A MX9701205 A MX 9701205A MX 9701205 A MX9701205 A MX 9701205A
Authority
MX
Mexico
Prior art keywords
location
mobile telephone
mobile
calculated
area
Prior art date
Application number
MX9701205A
Other languages
Spanish (es)
Other versions
MXPA97001205A (en
Inventor
Nicolas Kauser
Alan Denis Macdonald
Original Assignee
At & T Wireless Services 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
Priority claimed from US08/603,793 external-priority patent/US5724660A/en
Application filed by At & T Wireless Services Inc filed Critical At & T Wireless Services Inc
Publication of MX9701205A publication Critical patent/MX9701205A/en
Publication of MXPA97001205A publication Critical patent/MXPA97001205A/en

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

A method and apparatus for determining the location of a mobile telephone within the serving area of a mobile telephone system are disclosed. A mobile switching center analyzes the calling mobile telephone number and called telephone number to determine if a location function is required. Upon initiation of the location function by the mobile switching center, a mobile location module calculates a location estimate of the mobile telephone. The mobile location module receives a list of signal strengths received by the mobile telephone from cell site antennas within the serving are. The distance between the mobile telephone and a plurality of cell site antennas is calculated using a technique which reduces the error component of the calculated distances. These reduced error distances are used to geometrically determine an estimate of the location area. In addition, the mobile telephone comprises a GPS receiver processor for sending the most recent GPS coordinates of the mobile telephone which are within predetermined confidence level to the mobile location module. These GPS coordinates are compared with the calculated location area to increase the accuracy of the location determination.
MXPA/A/1997/001205A 1996-02-20 1997-02-17 Method and apparatus to determine the location of a telephone mo MXPA97001205A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/603,793 US5724660A (en) 1995-06-07 1996-02-20 Method and apparatus for locating a mobile station by comparing calculated location area with GPS coordinates
US08603793 1996-02-20

Publications (2)

Publication Number Publication Date
MX9701205A true MX9701205A (en) 1998-05-31
MXPA97001205A MXPA97001205A (en) 1998-10-23

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7660588B2 (en) 2002-10-17 2010-02-09 Qualcomm Incorporated Method and apparatus for improving radio location accuracy with measurements

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7660588B2 (en) 2002-10-17 2010-02-09 Qualcomm Incorporated Method and apparatus for improving radio location accuracy with measurements
RU2381520C2 (en) * 2002-10-17 2010-02-10 Квэлкомм Инкорпорейтед Method and device for improving positional accuracy with measurements by radio engineering method
US8583140B2 (en) 2002-10-17 2013-11-12 Qualcomm Incorporated Method and apparatus for improving radio location accuracy with measurements
US8588811B2 (en) 2002-10-17 2013-11-19 Qualcomm Incorporated Method and apparatus for improving radio location accuracy with measurements
US9014719B2 (en) 2002-10-17 2015-04-21 Qualcomm Incorporated Method and apparatus for improving radio location accuracy with measurements

Also Published As

Publication number Publication date
BR9701024A (en) 1998-11-03
CA2195591A1 (en) 1997-08-21
BR9701024B1 (en) 2009-08-11
CA2195591C (en) 2001-09-04

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