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US 11,240,682 B2Granted
Split sector level sweep using beamforming refinement frames
AssigneeQUALCOMM Incorporated
InventorsAssaf Yaakov Kasher, Amichai Sanderovich, Solomon Trainin, Alecsander Petru Eitan
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Abstract
Certain aspects of the present disclosure provide methods and apparatus for enhancing a beamforming training procedure.
Claims42
An apparatus for wireless communications, comprising:
- a processing system configured to generate a plurality of transmit beamforming refinement frames for a sector sweep, each transmit beamforming refinement frame comprising a preamble, a data field, at least one beamforming training field, and an indication of whether the transmit beamforming refinement frame is a last transmit beamforming refinement frame in the sector sweep;
- a first interface configured to output the transmit beamforming refinement frames for transmission using a first transmit beamforming sector for the preambles and data fields and using one or more of second transmit beamforming sectors for each beamforming training field;
- and
- a second interface configured to obtain a first feedback frame from a wireless node, after the last transmit beamforming refinement frame in the sector sweep was output for transmission, the first feedback frame indicating one or more of the second transmit beamforming sectors, wherein the apparatus is configured to select at least one of the indicated one or more of the second transmit beamforming sectors for communication with the wireless node.
1 more element
An apparatus for wireless communications, comprising:
- a processing system configured to generate a plurality of receive beamforming refinement frames, each receive beamforming refinement frame comprising a preamble, a data field, at least one beamforming training field, and an indication of whether the receive beamforming refinement frame is a last receive beamforming refinement frame in a receive beamforming refinement phase;
- and
- a first interface is configured to output the receive beamforming refinement frames for transmission using at least one first transmit beamforming sector.
An apparatus for wireless communications, comprising:
- a first interface configured to obtain a plurality of transmit beamforming refinement frames during a sector sweep, wherein
- a first portion of each transmit beamforming refinement frame is obtained via a first receive beamforming sector,
- training fields of the transmit beamforming refinement frames are obtained while the apparatus is in an omnidirectional receive antenna mode,
- each transmit beamforming refinement frame has an indication of whether the transmit beamforming refinement frame is a last transmit beamforming refinement frame in the sector sweep, and
- a processing system configured to
- determine the sector sweep is over after identifying the last transmit beamforming refinement frame based on the indication contained therein,
- in response to the determination,
- select at least one first transmit beamforming sector that was used to transmit one of the training fields, based on received signal quality of the one of the training fields, and
- generate a first feedback frame indicating the selected at least one first transmit beamforming sector;
- and
- a second interface configured to output the first feedback frame for transmission.
8 more elements
An apparatus for wireless communications, comprising:
- a first interface configured to obtain from a wireless node, during a receive beamforming phase, a plurality of receive beamforming refinement frames, each receive beamforming refinement frame comprising a first portion obtained via a receive beamforming sector, at least one of the plurality of beamforming training frames being obtained via a different receive beamforming sector than at least another of the plurality of beamforming training frames, and wherein each of the plurality of receive beamforming refinement frames comprises an indication of whether the receive beamforming refinement frame is a last receive beamforming refinement frame in the receive beamforming refinement phase;
- and
- a processing system configured to process the plurality of beamforming training frames to select one of the different receive beamforming sectors for use in communication with the wireless node.
Dependencies are inferred from the claim text.