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Location estimation of wireless terminals through pattern matching of deduced and empirical signal-strength measurements

  • US 7,116,987 B2
  • Filed: 03/12/2004
  • Issued: 10/03/2006
  • Est. Priority Date: 07/19/2003
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a signal-strength measurement for a first downlink signal that is received by a wireless terminal and a signal-strength measurement for an uplink signal that is transmitted by said wireless terminal; and

    estimating the location of said wireless terminal based on said signal-strength measurement for said first downlink signal and on said signal-strength measurement for said uplink signalwherein estimating the location of said wireless terminal comprises pattern matching (i) said signal-strength measurement for said downlink signal against a map that correlates signal-strength measurements and locations.

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