IN2012DN05002A - - Google Patents

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Publication number
IN2012DN05002A
IN2012DN05002A IN5002DEN2012A IN2012DN05002A IN 2012DN05002 A IN2012DN05002 A IN 2012DN05002A IN 5002DEN2012 A IN5002DEN2012 A IN 5002DEN2012A IN 2012DN05002 A IN2012DN05002 A IN 2012DN05002A
Authority
IN
India
Prior art keywords
reference signal
correlator
estimate
wireless device
threshold
Prior art date
Application number
Inventor
Ari Kangas
Iana Siomina
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of IN2012DN05002A publication Critical patent/IN2012DN05002A/en

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Classifications

    • 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
    • G01S5/0215—Interference
    • 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
    • G01S5/01—Determining conditions which influence positioning, e.g. radio environment, state of motion or energy consumption
    • 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
    • G01S5/0221—Receivers
    • G01S5/02213—Receivers arranged in a network for determining the position of a transmitter
    • G01S5/02216—Timing or synchronisation of the receivers
    • 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
    • G01S5/0252—Radio frequency fingerprinting
    • G01S5/02521—Radio frequency fingerprinting using a radio-map
    • G01S5/02524—Creating or updating the radio-map
    • G01S5/02527—Detecting or resolving anomalies in the radio frequency fingerprints of the radio-map
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only

Abstract

A wireless device (24) receives a reference signal over a radio channel (21). The reference signal may be Positioning Reference Signals (PRS) and/or Common Referencing Signals (CR5), and may be transmitted from a transmitter (22). The wireless device (24) comprises a correlator (100); a reference signal detector (102); a threshold selector (106); and a reference signal analyzer (108). The correlator (100) use a signal received from the radio channel (21) and a replica of the reference signal to provide a correlator output value. The reference signal detector (102) compares the correlator output value with a threshold value to detect presence of a reference signal, and to estimate an arrival time of the reference signal. The threshold selector (106) adapts the threshold value to at least an estimate of a relative amount of noise and interference power in the received signal.
IN5002DEN2012 2009-12-14 2010-12-09 IN2012DN05002A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28604909P 2009-12-14 2009-12-14
PCT/IB2010/055689 WO2011073859A2 (en) 2009-12-14 2010-12-09 Defining adaptive detection thresholds

Publications (1)

Publication Number Publication Date
IN2012DN05002A true IN2012DN05002A (en) 2015-10-02

Family

ID=43904595

Family Applications (1)

Application Number Title Priority Date Filing Date
IN5002DEN2012 IN2012DN05002A (en) 2009-12-14 2010-12-09

Country Status (7)

Country Link
US (2) US8134990B2 (en)
EP (2) EP2589978B1 (en)
JP (1) JP5782453B2 (en)
CA (1) CA2784040A1 (en)
IN (1) IN2012DN05002A (en)
MY (1) MY179857A (en)
WO (1) WO2011073859A2 (en)

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Also Published As

Publication number Publication date
JP2013514026A (en) 2013-04-22
US20120163515A1 (en) 2012-06-28
US20110143773A1 (en) 2011-06-16
WO2011073859A3 (en) 2011-12-01
EP2589978B1 (en) 2017-06-07
WO2011073859A2 (en) 2011-06-23
US8509207B2 (en) 2013-08-13
CA2784040A1 (en) 2011-06-23
EP2589978A1 (en) 2013-05-08
EP2513662A2 (en) 2012-10-24
MY179857A (en) 2020-11-18
US8134990B2 (en) 2012-03-13
JP5782453B2 (en) 2015-09-24

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