Indicates the size of codebook entries: Codebook Information If Feedback Type is SU: Set to 0 for 2 bits for 4 bits for ψ, Set to 1 for 4 bits for 6 bits for ψ, If Feedback Type is MU: Set to 0 for 5 bits for 7 bits for ψ, Set to 1 for 7 bits for 9 bits for ψ, Note: The codebook size for MU Feedback with Ng=16 is limited to (9,7) Indicates the feedback type: Feedback Type Set to 0 for SU Set to 1 for MU Set to 2 for CQI Feedback (CID #971, 2713) 3 is Reserved Indicates the number of remaining feedback segments for the associated VHT Compressed Remaining Feedback Beamforming Segments Set to 0 for the last feedback segment of a segmented report or the only feedback segment of an unsegmented report. Set to a value between 1 and 6 for a feedback segment that is neither the first nor the last of a segmented report. Set to a value between 1 and 7 for a feedback segment that is not the last feedback segment of a segmented report. In a retransmitted feedback segment, the field is set to the same value associated with the feedback segment in the original transmission. First Feedback Segment Set to 1 for the first feedback segment of a segmented report or the only feedback segment of an unsegmented report; set to 0 if it is not the first feedback segment or if the VHT Compressed Beamforming Report field and MU Exclusive Beamforming Report field are not present in the frame. In a retransmitted feedback segment, the field is set to the same value associated with the feedback segment in the original transmission. The starting RU index indicates the first RU26 for which the HE RU Start Index beamformer is requesting feedback. RU End Index The ending RU index indicates the last RU26 for which the HE beamformer is requesting feedback. Sounding Dialog Token Number In a HE Compressed Beamforming frame not carrying all or part of a HE Compressed Beamforming report, the Nc Index, Nr Index, Channel Width, Grouping, Codebook Information, Feedback Type and Sounding Dialog Token Number are reserved, the First Feedback Segment subfield is set to 0 and the Remaining Feedback Segments subfield is set to 7.
Codebook Information Indicates the size of codebook entries: If Feedback Type is SU: Set to 0 for 2 bits for ψ, 4 bits for Set to 1 for 4 bits for ψ, 6 bits for If Feedback Type is MU: Set to 0 for 5 bits for ψ, 7 bits for Set to 1 for 7 bits for ψ, 9 bits for Note: The codebook size for MU Feedback with Ng=16 is limited to (9,7) Feedback Type Indicates the feedback type: Set to 0 for SU Set to 1 for MU Set to 2 for CQI Feedback (CID #971, 2713) 3 is Reserved Remaining Feedback Segments Indicates the number of remaining feedback segments for the associated VHT Compressed Beamforming Set to 0 for the last feedback segment of a segmented report or the only feedback segment of an unsegmented report. Set to a value between 1 and 6 for a feedback segment that is neither the first nor the last of a segmented report. Set to a value between 1 and 7 for a feedback segment that is not the last feedback segment of a segmented report. In a retransmitted feedback segment, the field is set to the same value associated with the feedback segment in the original transmission. First Feedback Segment Set to 1 for the first feedback segment of a segmented report or the only feedback segment of an unsegmented report; set to 0 if it is not the first feedback segment or if the VHT Compressed Beamforming Report field and MU Exclusive Beamforming Report field are not present in the frame. In a retransmitted feedback segment, the field is set to the same value associated with the feedback segment in the original transmission. RU Start Index The starting RU index indicates the first RU26 for which the HE beamformer is requesting feedback. RU End Index The ending RU index indicates the last RU26 for which the HE beamformer is requesting feedback. Sounding Dialog Token Number In a HE Compressed Beamforming frame not carrying all or part of a HE Compressed Beamforming report, the Nc Index, Nr Index, Channel Width, Grouping, Codebook Information, Feedback Type and Sounding Dialog Token Number are reserved, the First Feedback Segment subfield is set to 0 and the Remaining Feedback Segments subfield is set to 7.
11-16-0773-03-00ax-comment-resolution-section-25-6-he-sounding.docx