MULTIPLE LOCATION ESTIMATORS FOR WIRELESS LOCATION

  • US 20080113672A1
  • Filed: 01/14/2008
  • Published: 05/15/2008
  • Est. Priority Date: 09/09/1996
  • Status: Active Grant
First Claim
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1. A method for locating, from a plurality of wireless mobile stations, one of the wireless mobile stations using measurements of wireless signals, wherein at least one of:

  • (i) said measurements and (ii) said wireless signals are transmitted between said one mobile station and at least one of a plurality of fixed location communication stations, each communication station capable of at least one of receiving wireless signals from, and transmitting wireless signals to said one mobile station, comprising;

    receiving, from each of at least first and second mobile station location estimators, corresponding first and second information related to likely geographical approximations for a location of said one mobile station, wherein;

    (a) for determining a likely geographical approximation, GAA, for a location, LA, of a second of the mobile stations at a time TA, said first location estimator generates GAA without requiring a prior likely geographical location approximation generated by said second location estimator for locating the second mobile station at substantially the location LA at substantially the time TA, and, (b) for estimating a likely geographical approximation, GAB, for a location, LB, of a third one of the mobile stations at a time TB, said second location estimator generates GAB without requiring a prior likely geographical location approximation generated by said first location estimator for locating the third mobile station at the location LB at substantially the time TB;

    determining a resulting location estimate of said one mobile station, wherein said step of determining includes at least one of the substeps (B1) through (B2) following;

    (B1) when said first and second information include, respectively, first and second likely geographical approximations, combining said first and second likely geographical approximations so that said resulting location estimate is dependent on each of said first and second location likely geographical approximations; and

    (B2) selecting one of said first and second information for receiving preference in determining said resulting location, wherein said selecting is dependent upon location related data in at least one of said first and second information.

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