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Proximity detection using diversity path loss sampling

  • US 9,014,644 B2
  • Filed: 06/21/2012
  • Issued: 04/21/2015
  • Est. Priority Date: 06/21/2012
  • Status: Active Grant
First Claim
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1. A method for determining a proximity of a mobile radio comprising:

  • determining an initial range of a mobile radio in relation to a base radio comprising estimating a distance utilizing a RSSI value from a signal received at a base radio selected antenna; and

    processing the initial range determination to determine whether to make a refined range determination utilizing signal measurements from both a base radio first antenna and a base radio second antenna.

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