WO2005036349A3 - Method and system for improved wlan location - Google Patents

Method and system for improved wlan location Download PDF

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Publication number
WO2005036349A3
WO2005036349A3 PCT/US2004/033073 US2004033073W WO2005036349A3 WO 2005036349 A3 WO2005036349 A3 WO 2005036349A3 US 2004033073 W US2004033073 W US 2004033073W WO 2005036349 A3 WO2005036349 A3 WO 2005036349A3
Authority
WO
WIPO (PCT)
Prior art keywords
computer
reference signal
received
data communications
signal characteristics
Prior art date
Application number
PCT/US2004/033073
Other languages
French (fr)
Other versions
WO2005036349A2 (en
Inventor
Thomas P Lewis
Russell A Barr
Original Assignee
Symbol Technologies Inc
Thomas P Lewis
Russell A Barr
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 Symbol Technologies Inc, Thomas P Lewis, Russell A Barr filed Critical Symbol Technologies Inc
Priority to CN2004800291124A priority Critical patent/CN101019444B/en
Priority to EP04785382.5A priority patent/EP1671210B1/en
Priority to JP2006534331A priority patent/JP5124142B2/en
Publication of WO2005036349A2 publication Critical patent/WO2005036349A2/en
Publication of WO2005036349A3 publication Critical patent/WO2005036349A3/en

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

Abstract

Mobile units within an area are located using a wireless local area network. Reference signal transmitters are provided at selected fixed locations within the area. Reference signals are transmitted using the reference signal transmitters using a first selected channel of the wireless local area network. A computer is provided having a database relating signal characteristics of signals transmitted by the reference signal transmitters to location within the area At least one access point is coupled to the computer and provides wireless data communications between the computer and the mobile unit using one or more channels of the wireless data communications system that are different from the first data communications channel. A selected plurality of the reference signals are received at the mobile unit, signal characteristics of the received reference signals are determined and data representing the received reference signal characteristics is transmitted to the computer via the access point using the one or more data communications channels. The data representing reference signal characteristics is received at the computer and position of the mobile unit is determined using the database.
PCT/US2004/033073 2003-10-06 2004-10-05 Method and system for improved wlan location WO2005036349A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2004800291124A CN101019444B (en) 2003-10-06 2004-10-05 Method and system for improved WLAN location
EP04785382.5A EP1671210B1 (en) 2003-10-06 2004-10-05 Method and system for improved wlan location
JP2006534331A JP5124142B2 (en) 2003-10-06 2004-10-05 Method and system for improved WLAN location

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/679,524 US7412246B2 (en) 2003-10-06 2003-10-06 Method and system for improved wlan location
US10/679,524 2003-10-06

Publications (2)

Publication Number Publication Date
WO2005036349A2 WO2005036349A2 (en) 2005-04-21
WO2005036349A3 true WO2005036349A3 (en) 2006-11-30

Family

ID=34394174

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/033073 WO2005036349A2 (en) 2003-10-06 2004-10-05 Method and system for improved wlan location

Country Status (5)

Country Link
US (2) US7412246B2 (en)
EP (1) EP1671210B1 (en)
JP (1) JP5124142B2 (en)
CN (1) CN101019444B (en)
WO (1) WO2005036349A2 (en)

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Also Published As

Publication number Publication date
WO2005036349A2 (en) 2005-04-21
EP1671210A2 (en) 2006-06-21
JP5124142B2 (en) 2013-01-23
CN101019444A (en) 2007-08-15
EP1671210A4 (en) 2011-03-09
EP1671210B1 (en) 2019-07-24
US8121612B2 (en) 2012-02-21
US20090017841A1 (en) 2009-01-15
CN101019444B (en) 2012-10-10
US7412246B2 (en) 2008-08-12
US20050075118A1 (en) 2005-04-07
JP2007507988A (en) 2007-03-29

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