Efficient DL OFDMA frequency selectivity harvesting
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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Abstract
A method for communication in a wireless local area network comprises receiving a frame at a first device, the frame being transmitted by a second device. The method further comprises determining, by the first device using the frame, a channel strength for each of a plurality of sub-bands associated with a bandwidth of the frame. A sub-band of the plurality of sub-bands is selected based on the channel strength determinations made using the frame. The first and second devices communicate using the selected sub-band.
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Citations
19 Claims
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1. A method for communication in a wireless local area network, the method comprising:
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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. - View Dependent Claims (2, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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3. A method for communication in a wireless local area network, the method comprising:
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receiving an announcement frame by a first device prior to receiving a pre-announced frame, the announcement frame indicating that respective channel strengths for a plurality of sub bands associated with a bandwidth of the pre-announced frame are to be determined using the pre-announced frame; receiving the pre-announced frame at a first device, the pre-announced frame being transmitted by a second device; and determining, by the first device using the pre-announced frame, the respective channel strengths for the plurality of sub bands associated with the bandwidth of the pre-announced frame, 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 pre-announced frame, and wherein the announcement frame includes an indication that a report prepared according to the channels strengths is to be included in a field of a Medium Access Control (MAC) header of a subsequent frame transmitted by the first device. - View Dependent Claims (4, 5, 6)
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Specification