Protection methods for wireless transmissions

  • US 10,020,919 B2
  • Filed: 04/25/2017
  • Issued: 07/10/2018
  • Est. Priority Date: 10/12/2015
  • Status: Active Grant
First Claim
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1. A method performed by a wireless device, the method comprising:

  • receiving a Null Data Packet Announcement (NDPA), the NDPA including one or more station information fields;

    determining exactly a number of the one or more station information fields in the NDPA;

    receiving a Null Data Packet (NDP); and

    in response to determining that the number of the one or more station information fields in the NDPA is one, transmitting first Channel State Information (CSI) feedback in response to receiving the NDP,wherein the number of the one or more station information fields in the NDPA is the cardinality of the one or more station information fields in the NDPA.

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