WO2004084022A3 - Real-time system and method for computing location of mobile subcriber in a wireless ad-hoc network - Google Patents

Real-time system and method for computing location of mobile subcriber in a wireless ad-hoc network Download PDF

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Publication number
WO2004084022A3
WO2004084022A3 PCT/US2004/007577 US2004007577W WO2004084022A3 WO 2004084022 A3 WO2004084022 A3 WO 2004084022A3 US 2004007577 W US2004007577 W US 2004007577W WO 2004084022 A3 WO2004084022 A3 WO 2004084022A3
Authority
WO
WIPO (PCT)
Prior art keywords
real
wireless
hoc network
location
time system
Prior art date
Application number
PCT/US2004/007577
Other languages
French (fr)
Other versions
WO2004084022A2 (en
Inventor
John M Belcea
Original Assignee
Meshnetworks Inc
John M Belcea
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 Meshnetworks Inc, John M Belcea filed Critical Meshnetworks Inc
Priority to EP04720364A priority Critical patent/EP1602202A4/en
Priority to JP2006507120A priority patent/JP4653078B2/en
Publication of WO2004084022A2 publication Critical patent/WO2004084022A2/en
Publication of WO2004084022A3 publication Critical patent/WO2004084022A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • 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
    • G01S5/0284—Relative positioning
    • G01S5/0289—Relative positioning of multiple transceivers, e.g. in ad hoc networks
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • 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
    • G01S5/0294—Trajectory determination or predictive filtering, e.g. target tracking or Kalman filtering

Abstract

A system and method for improving the accuracy in computing the location of a mobile subscriber device (102) connected in a wireless network. The system and method employ a predictive filter (108, 112) including a measurement weight algorithm to decrease standard deviation error, to correctly determine a location of a mobile subscriber device (102). The predictive filter (118, 102) requires lower levels of computation, which allows for real-time processing on low-speed central processing units commonly used in wireless network.
PCT/US2004/007577 2003-03-13 2004-03-12 Real-time system and method for computing location of mobile subcriber in a wireless ad-hoc network WO2004084022A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04720364A EP1602202A4 (en) 2003-03-13 2004-03-12 A real -time system and method for improving the accuracy of the computed location of mobile subscribers in a wireless ad-hoc network using a low speed central processing unit
JP2006507120A JP4653078B2 (en) 2003-03-13 2004-03-12 Real-time system and method for improving location accuracy of mobile subscribers in a wireless ad hoc network using a low-speed central processing unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45396503P 2003-03-13 2003-03-13
US60/453,965 2003-03-13

Publications (2)

Publication Number Publication Date
WO2004084022A2 WO2004084022A2 (en) 2004-09-30
WO2004084022A3 true WO2004084022A3 (en) 2005-07-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/007577 WO2004084022A2 (en) 2003-03-13 2004-03-12 Real-time system and method for computing location of mobile subcriber in a wireless ad-hoc network

Country Status (5)

Country Link
US (1) US7076259B2 (en)
EP (1) EP1602202A4 (en)
JP (1) JP4653078B2 (en)
KR (1) KR20050117557A (en)
WO (1) WO2004084022A2 (en)

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