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COMMUNICATION METHODS AND COMMUNICATION DEVICES

  • US 20150244619A1
  • Filed: 09/12/2013
  • Published: 08/27/2015
  • Est. Priority Date: 09/12/2012
  • Status: Abandoned Application
First Claim
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1. A communication method comprising:

  • at least one of sending a data unit or receiving a data unit;

    wherein the data unit is a null-data packet (NDP) and comprises at least a physical layer (PHY) header;

    wherein the PHY header comprises a plurality of fields; and

    wherein the plurality of fields comprise at least a sub-type field with at least 3 bits indicating a NDP sub-type of the data unit.

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