WO2005020497A3 - Improved real time location system - Google Patents

Improved real time location system Download PDF

Info

Publication number
WO2005020497A3
WO2005020497A3 PCT/US2004/028058 US2004028058W WO2005020497A3 WO 2005020497 A3 WO2005020497 A3 WO 2005020497A3 US 2004028058 W US2004028058 W US 2004028058W WO 2005020497 A3 WO2005020497 A3 WO 2005020497A3
Authority
WO
WIPO (PCT)
Prior art keywords
server
location data
real time
location system
time location
Prior art date
Application number
PCT/US2004/028058
Other languages
French (fr)
Other versions
WO2005020497A2 (en
Inventor
Chris Zegelin
Original Assignee
Symbol Technologies Inc
Chris Zegelin
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, Chris Zegelin filed Critical Symbol Technologies Inc
Priority to EP04782520A priority Critical patent/EP1658741A2/en
Publication of WO2005020497A2 publication Critical patent/WO2005020497A2/en
Publication of WO2005020497A3 publication Critical patent/WO2005020497A3/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
    • 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
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0045—Transmission from base station to mobile station
    • G01S5/0063—Transmission from base station to mobile station of measured values, i.e. measurement on base station and position calculation on mobile
    • 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

Abstract

Portable devices are provided with location data determined at a server computer by comparing radio signal characteristics to a database of characteristics. In one arrangement the server additionally downloads a portion of the database of radio signal characteristics to the portable device and the portable device uses the downloaded portion of the data base to determine if its location has changed. The portable device may either update the location data that it has previously downloaded from the server or alternately may signal the server to provide either updated location data or an increased rate of location data update.
PCT/US2004/028058 2003-08-26 2004-08-26 Improved real time location system WO2005020497A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04782520A EP1658741A2 (en) 2003-08-26 2004-08-26 Improved real time location system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/648,712 US20050054350A1 (en) 2003-08-26 2003-08-26 Real time location system
US10/648,712 2003-08-26

Publications (2)

Publication Number Publication Date
WO2005020497A2 WO2005020497A2 (en) 2005-03-03
WO2005020497A3 true WO2005020497A3 (en) 2005-08-04

Family

ID=34216789

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/028058 WO2005020497A2 (en) 2003-08-26 2004-08-26 Improved real time location system

Country Status (3)

Country Link
US (1) US20050054350A1 (en)
EP (1) EP1658741A2 (en)
WO (1) WO2005020497A2 (en)

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US7529925B2 (en) 2005-03-15 2009-05-05 Trapeze Networks, Inc. System and method for distributing keys in a wireless network
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US7551574B1 (en) * 2005-03-31 2009-06-23 Trapeze Networks, Inc. Method and apparatus for controlling wireless network access privileges based on wireless client location
US20060293069A1 (en) * 2005-06-28 2006-12-28 Patel Jayesh M Method and system for controlling an electronic device
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US7724703B2 (en) 2005-10-13 2010-05-25 Belden, Inc. System and method for wireless network monitoring
WO2007044986A2 (en) 2005-10-13 2007-04-19 Trapeze Networks, Inc. System and method for remote monitoring in a wireless network
US8638762B2 (en) 2005-10-13 2014-01-28 Trapeze Networks, Inc. System and method for network integrity
US7573859B2 (en) 2005-10-13 2009-08-11 Trapeze Networks, Inc. System and method for remote monitoring in a wireless network
US7558266B2 (en) 2006-05-03 2009-07-07 Trapeze Networks, Inc. System and method for restricting network access using forwarding databases
US8966018B2 (en) 2006-05-19 2015-02-24 Trapeze Networks, Inc. Automated network device configuration and network deployment
US9191799B2 (en) 2006-06-09 2015-11-17 Juniper Networks, Inc. Sharing data between wireless switches system and method
US8818322B2 (en) 2006-06-09 2014-08-26 Trapeze Networks, Inc. Untethered access point mesh system and method
US9258702B2 (en) 2006-06-09 2016-02-09 Trapeze Networks, Inc. AP-local dynamic switching
US8340110B2 (en) 2006-09-15 2012-12-25 Trapeze Networks, Inc. Quality of service provisioning for wireless networks
US7873061B2 (en) 2006-12-28 2011-01-18 Trapeze Networks, Inc. System and method for aggregation and queuing in a wireless network
US7734299B2 (en) * 2007-03-20 2010-06-08 Microsoft Corporation Facilitating use of a device based on short-range wireless technology
US8902904B2 (en) 2007-09-07 2014-12-02 Trapeze Networks, Inc. Network assignment based on priority
US20090085741A1 (en) * 2007-09-27 2009-04-02 Symbol Technologies, Inc. Methods and apparatus for locating an rfid reader using rfid tags
US8238942B2 (en) 2007-11-21 2012-08-07 Trapeze Networks, Inc. Wireless station location detection
US8150357B2 (en) 2008-03-28 2012-04-03 Trapeze Networks, Inc. Smoothing filter for irregular update intervals
US8978105B2 (en) 2008-07-25 2015-03-10 Trapeze Networks, Inc. Affirming network relationships and resource access via related networks
US8238298B2 (en) * 2008-08-29 2012-08-07 Trapeze Networks, Inc. Picking an optimal channel for an access point in a wireless network
US7936736B2 (en) 2008-09-08 2011-05-03 Proctor Jr James Arthur Enforcing policies in wireless communication using exchanged identities
US8639262B2 (en) * 2008-10-31 2014-01-28 Qualcomm Incorporated Method and apparatus to confirm mobile equipment has remained relatively stationary using one or more pilot signal
US9538405B2 (en) 2011-02-17 2017-01-03 Telefonaktiebolaget Lm Ericsson (Publ) Devices, methods, and computer programs for detecting potential displacement of a wireless transceiver
US8862067B2 (en) * 2012-03-27 2014-10-14 Microsoft Corporation Proximate beacon identification
US9279878B2 (en) 2012-03-27 2016-03-08 Microsoft Technology Licensing, Llc Locating a mobile device
CN102801781B (en) * 2012-06-29 2016-08-03 宇龙计算机通信科技(深圳)有限公司 Terminal, location-server and localization method
US9612121B2 (en) 2012-12-06 2017-04-04 Microsoft Technology Licensing, Llc Locating position within enclosure
CN107113768B (en) * 2015-01-20 2020-11-27 红点定位公司 Method, system and apparatus for determining and providing location information for wireless devices
US9820101B2 (en) * 2015-08-24 2017-11-14 Thinking Source, LLC Device tracking system

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US6768719B1 (en) * 1999-06-23 2004-07-27 Nortel Networks Limited Method and apparatus for mobile assisted detection of a transmission fault on the abis interface of a mobile telecommunications network

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US6799047B1 (en) * 1999-02-25 2004-09-28 Microsoft Corporation Locating and tracking a user in a wireless network through environmentally profiled data
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Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US6195550B1 (en) * 1998-12-30 2001-02-27 Nortel Networks Corporation Method for reducing messaging for inter-VLR location updates
US6768719B1 (en) * 1999-06-23 2004-07-27 Nortel Networks Limited Method and apparatus for mobile assisted detection of a transmission fault on the abis interface of a mobile telecommunications network

Also Published As

Publication number Publication date
EP1658741A2 (en) 2006-05-24
US20050054350A1 (en) 2005-03-10
WO2005020497A2 (en) 2005-03-03

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