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Apparatus and method for wireless distance measurement

  • US 10,139,484 B2
  • Filed: 08/14/2015
  • Issued: 11/27/2018
  • Est. Priority Date: 08/14/2014
  • Status: Active Grant
First Claim
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1. A method for operating a second wireless device in a wireless communication system, the method comprising:

  • receiving a first signal for distance measurement transmitted from a first wireless device;

    receiving a reflected signal, wherein the reflected signal is the first signal reflected by a reflector;

    estimating a distance between the second wireless device and the reflector, wherein;

    the first signal comprises a beam signal transmitted to the reflector and a sidelobe signal of the beam signal, andthe distance is estimated based on a reception time difference between the sidelobe signal and the reflected signal;

    determining an accuracy for the distance based on a correlation peak regarding the reflected signal; and

    displaying the estimated distance on a screen of the second wireless device.

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