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Secure ranging wireless communication

  • US 10,447,725 B1
  • Filed: 08/01/2017
  • Issued: 10/15/2019
  • Est. Priority Date: 01/24/2017
  • Status: Active Grant
First Claim
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1. An apparatus, comprising a processing element configured to cause a first wireless device to:

  • receive a ranging packet from a second wireless device in a wireless manner;

    perform channel and noise estimation for the ranging packet;

    estimate a first arrival path (FAP) for the ranging packet based at least in part on the channel and noise estimation for the ranging packet; and

    perform one or more security checks for the ranging packet, wherein at least one of the security checks for the ranging packet is based at least in part on the channel and noise estimation for the ranging packet and the FAP for the ranging packet, wherein to perform the one or more security checks for the ranging packet, the processing element is further configured to cause the first wireless device to;

    perform a first calculation for the ranging packet;

    perform a second calculation for the ranging packet; and

    determine whether the ranging packet is secure based at least in part on the first calculation and the second calculation.

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