CA2047253A1 - Method of locating a mobile station - Google Patents

Method of locating a mobile station

Info

Publication number
CA2047253A1
CA2047253A1 CA2047253A CA2047253A CA2047253A1 CA 2047253 A1 CA2047253 A1 CA 2047253A1 CA 2047253 A CA2047253 A CA 2047253A CA 2047253 A CA2047253 A CA 2047253A CA 2047253 A1 CA2047253 A1 CA 2047253A1
Authority
CA
Canada
Prior art keywords
mobile station
location
pdf
probability density
density function
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
CA2047253A
Other languages
French (fr)
Other versions
CA2047253C (en
Inventor
Wing Fai Lo
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of CA2047253A1 publication Critical patent/CA2047253A1/en
Application granted granted Critical
Publication of CA2047253C publication Critical patent/CA2047253C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-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
    • G01S5/0205Details
    • G01S5/0244Accuracy or reliability of position solution or of measurements contributing thereto

Abstract

A method of providing an estimation of a mobile station's location in a cellular communication system having a plurality of base stations and mobile stations is disclosed. The mobile station's location is provided by measuring radio propagation parameters between the mobile station and each base station within propagation range of the mobile station. Then, a location probability density function (pdf) is found based on the measured radio propagation parameters. A point probability density function (pdf) is then constructed by combining each individual function which is obtained. The location of the mobile station is then estimated from the resulting point probability density function (pdf).
CA002047253A 1990-12-19 1991-07-17 Method of locating a mobile station Expired - Fee Related CA2047253C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US630,010 1990-12-19
US07/630,010 US5293642A (en) 1990-12-19 1990-12-19 Method of locating a mobile station

Publications (2)

Publication Number Publication Date
CA2047253A1 true CA2047253A1 (en) 1992-06-20
CA2047253C CA2047253C (en) 2000-02-01

Family

ID=24525388

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002047253A Expired - Fee Related CA2047253C (en) 1990-12-19 1991-07-17 Method of locating a mobile station

Country Status (2)

Country Link
US (1) US5293642A (en)
CA (1) CA2047253C (en)

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