WO2003023443A3 - Method for detecting location of a mobile terminal - Google Patents

Method for detecting location of a mobile terminal Download PDF

Info

Publication number
WO2003023443A3
WO2003023443A3 PCT/JP2002/009117 JP0209117W WO03023443A3 WO 2003023443 A3 WO2003023443 A3 WO 2003023443A3 JP 0209117 W JP0209117 W JP 0209117W WO 03023443 A3 WO03023443 A3 WO 03023443A3
Authority
WO
WIPO (PCT)
Prior art keywords
mobile terminal
base stations
determined
csi
mobile
Prior art date
Application number
PCT/JP2002/009117
Other languages
French (fr)
Other versions
WO2003023443A2 (en
Inventor
Takeshi Hattori
Hiroaki Koshima
Kimio Muya
Original Assignee
Locus Corp
Takeshi Hattori
Hiroaki Koshima
Kimio Muya
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 Locus Corp, Takeshi Hattori, Hiroaki Koshima, Kimio Muya filed Critical Locus Corp
Publication of WO2003023443A2 publication Critical patent/WO2003023443A2/en
Publication of WO2003023443A3 publication Critical patent/WO2003023443A3/en

Links

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
    • G01S5/0252—Radio frequency fingerprinting
    • G01S5/02521—Radio frequency fingerprinting using a radio-map
    • 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
    • G01S5/02525—Gathering the radio frequency fingerprints
    • G01S5/02526—Gathering the radio frequency fingerprints using non-dedicated equipment, e.g. user equipment or crowd-sourcing

Abstract

An object of the invention is to determine the location of a mobile terminal as a maximum likelihood estimate value, in a mobile communications system comprising a plurality of base stations, at least one mobile terminal capable of communicating with the base stations, and a center station capable of communicating with the base stations and/or mobile terminal. The probability distribution indicating the variation in the reception level from respective base stations CSi at a plurality of points within a prescribed range in which the mobile terminal has a possibility of being present is determined for these points on the basis of a base station database storing, at the least, positional information for the respective base stations CSi. A likelihood corresponding to the aforementioned probability distribution is determined with respect to the reception level values &gammao; from the base stations CSi (i = 1 to N) measured by the mobile station, and the point having the greatest likelihood value is determined to be the estimated location of the mobile terminal. Selected drawing Fig. 4
PCT/JP2002/009117 2001-09-06 2002-09-06 Method for detecting location of a mobile terminal WO2003023443A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001270217 2001-09-06
JP2001-270217 2001-09-06

Publications (2)

Publication Number Publication Date
WO2003023443A2 WO2003023443A2 (en) 2003-03-20
WO2003023443A3 true WO2003023443A3 (en) 2003-07-31

Family

ID=19095901

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/009117 WO2003023443A2 (en) 2001-09-06 2002-09-06 Method for detecting location of a mobile terminal

Country Status (2)

Country Link
CN (1) CN1610837A (en)
WO (1) WO2003023443A2 (en)

Families Citing this family (21)

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US7346338B1 (en) 2003-04-04 2008-03-18 Airespace, Inc. Wireless network system including integrated rogue access point detection
US7342906B1 (en) 2003-04-04 2008-03-11 Airespace, Inc. Distributed wireless network security system
US7453840B1 (en) 2003-06-30 2008-11-18 Cisco Systems, Inc. Containment of rogue systems in wireless network environments
US7293088B2 (en) 2003-07-28 2007-11-06 Cisco Technology, Inc. Tag location, client location, and coverage hole location in a wireless network
US6990428B1 (en) 2003-07-28 2006-01-24 Cisco Technology, Inc. Radiolocation using path loss data
US7286515B2 (en) 2003-07-28 2007-10-23 Cisco Technology, Inc. Method, apparatus, and software product for detecting rogue access points in a wireless network
US7286833B2 (en) 2004-02-27 2007-10-23 Airespace, Inc. Selective termination of wireless connections to refresh signal information in wireless node location infrastructure
US7205938B2 (en) 2004-03-05 2007-04-17 Airespace, Inc. Wireless node location mechanism responsive to observed propagation characteristics of wireless network infrastructure signals
US7116988B2 (en) 2004-03-16 2006-10-03 Airespace, Inc. Location of wireless nodes using signal strength weighting metric
US7286835B1 (en) 2004-09-10 2007-10-23 Airespace, Inc. Enhanced wireless node location using differential signal strength metric
US7516174B1 (en) 2004-11-02 2009-04-07 Cisco Systems, Inc. Wireless network security mechanism including reverse network address translation
US7805140B2 (en) 2005-02-18 2010-09-28 Cisco Technology, Inc. Pre-emptive roaming mechanism allowing for enhanced QoS in wireless network environments
US7370362B2 (en) 2005-03-03 2008-05-06 Cisco Technology, Inc. Method and apparatus for locating rogue access point switch ports in a wireless network
US7933612B2 (en) * 2006-02-28 2011-04-26 Microsoft Corporation Determining physical location based upon received signals
CN100435529C (en) * 2006-04-29 2008-11-19 中山大学 Wireless communication simulating apparatus based on ARM and USB storage device
CN101720130B (en) * 2008-10-09 2012-10-03 电信科学技术研究院 Method and device for allocating physical resource blocks
US8618984B2 (en) * 2010-03-19 2013-12-31 Microsoft Corporation Selecting beacons for location inference
CN106796277B (en) * 2014-10-09 2020-06-16 瑞典爱立信有限公司 Location adjustment in a mobile communication network
CN108934032B (en) * 2017-05-24 2021-09-28 中国移动通信集团设计院有限公司 Indoor ceiling antenna positioning method and device
CN110839279A (en) * 2019-10-21 2020-02-25 深圳数位传媒科技有限公司 Intelligent terminal positioning method and device based on 5G signal
US11683090B1 (en) 2022-01-18 2023-06-20 T-Mobile Usa, Inc. Laser-based enhancement of signal propagation path for mobile communications

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293642A (en) * 1990-12-19 1994-03-08 Northern Telecom Limited Method of locating a mobile station
US6275190B1 (en) * 1996-03-22 2001-08-14 Matsushita Electric Industrial Co., Ltd. Wireless communication system and method and system for detection of position of radio mobile station

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293642A (en) * 1990-12-19 1994-03-08 Northern Telecom Limited Method of locating a mobile station
US6275190B1 (en) * 1996-03-22 2001-08-14 Matsushita Electric Industrial Co., Ltd. Wireless communication system and method and system for detection of position of radio mobile station

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
YAMAMOTO R ET AL: "POSITION LOCATION TECHNOLOGIES USING SIGNAL STRENGTH IN CELLULAR SYSTEMS", VTC 2001 SPRING. IEEE VTS 53RD. VEHICULAR TECHNOLOGY CONFERENCE. RHODES, GREECE, MAY 6 - 9, 2001, IEEE VEHICULAR TECHNOLGY CONFERENCE, NEW YORK, NY: IEEE, US, vol. 4 OF 4. CONF. 53, 6 May 2001 (2001-05-06), pages 2570 - 2574, XP001076223, ISBN: 0-7803-6728-6 *

Also Published As

Publication number Publication date
WO2003023443A2 (en) 2003-03-20
CN1610837A (en) 2005-04-27

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