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METHODS AND APPARTUS TO DETERMINE DISTANCE BETWEEN DEVICES FOR DEVICE TO DEVICE COMMUNICATION AND PROXIMITY SERVICES

  • US 20130316727A1
  • Filed: 03/12/2013
  • Published: 11/28/2013
  • Est. Priority Date: 05/23/2012
  • Status: Active Grant
First Claim
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1. A method for determining a distance between a first device and a second device, the method comprising:

  • determining a first time of arrival for a first signal from a first base station sent to the second device via the first device;

    determining a second time of arrival for a second signal sent directly from a second base station to the second device; and

    determining the distance between the first device and the second device using the first and the second times of arrivals.

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