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Efficient DL OFDMA frequency selectivity harvesting

  • US 9,907,073 B2
  • Filed: 08/04/2015
  • Issued: 02/27/2018
  • Est. Priority Date: 12/08/2014
  • Status: Active Grant
First Claim
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1. A method for communication in a wireless local area network, the method comprising:

  • receiving a frame at a first device, the frame being transmitted by a second device;

    determining, by the first device using the frame, respective channel strengths for a plurality of sub bands associated with a bandwidth of the frame,determining, by the first device, whether an indication of which information is to be included in a sub-band Channel State Information (CSI) report has been received from the second device;

    when the first device determines that the indication of which information is to be included in the sub-band CSI report has been received from the second device, determining the sub-band CSI report according to the received indication of which information is to be included in the sub-band CSI report and the respective channel strengths for the plurality of sub bands;

    when the first device determines that the indication of which information is to be included in a sub-band CSI report has not been received from the second device, determining the sub-band CSI report according to a policy of the first device and the respective channel strengths for the plurality of sub bands; and

    transmitting, by the first device, the sub-band CSI report to the second device,wherein the first and second devices communicate using a sub-band selected from the plurality of sub-bands, the sub-band being selected based on the channel strength determinations made using the frame.

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