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Efficient ranging

  • US 9,949,156 B2
  • Filed: 02/11/2016
  • Issued: 04/17/2018
  • Est. Priority Date: 02/13/2015
  • Status: Active Grant
First Claim
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1. An apparatus for wireless communications, comprising:

  • a processing system configured to;

    determine a period that at least one wireless device is scheduled to be awake; and

    generate a first frame for transmission to the at least one wireless device during the period;

    a first interface configured to output the first frame for transmission; and

    a second interface configured to obtain a second frame after the first frame is output for transmission, wherein;

    the processing system is further configured to;

    determine ranging information based on a time difference between outputting the first frame and obtaining the second frame; and

    generate a third frame including the ranging information; and

    the first interface is further configured to output the third frame for transmission.

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