US 11,949,483 B2
Methods and apparatuses for codebook restriction for type-II feedback reporting and higher layer configuration and reporting for linear combination codebook in a wireless communications network
Ramireddy Venkatesh, Erlangen (DE); Marcus Grossmann, Erlangen (DE); and Markus Landmann, Erlangen (DE)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Filed on Dec. 9, 2021, as Appl. No. 17/546,421.
Application 17/546,421 is a continuation of application No. 17/264,917, filed on Feb. 1, 2021, granted, now 11,251,854.
Prior Publication US 2022/0255609 A1, Aug. 11, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 88/08 (2009.01); H04B 7/0456 (2017.01); H04B 7/06 (2006.01); H04W 72/04 (2023.01); H04W 76/00 (2018.01)
CPC H04B 7/0639 (2013.01) [H04B 7/0469 (2013.01); H04B 7/0478 (2013.01); H04B 7/0626 (2013.01); H04B 7/063 (2013.01); H04B 7/0634 (2013.01); H04W 72/04 (2013.01); H04W 76/00 (2013.01); H04W 88/08 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method performed comprising:
receiving from a radio signal wherein the radio signal comprises at least one DownLink reference signal;
calculating a precoding matrix for a plurality of antenna ports,
wherein the precoding matrix is based on a first codebook, on a second codebook and a plurality of combination coefficients,
wherein the first codebook comprises at least one transmit-side spatial beam components/vectors of the precoding matrix,
wherein the second codebook comprises at least one delay components/vectors of the precoding matrix;
receiving a higher layer configuration,
wherein the higher layer configuration comprises an indication of a portion of beam vectors from the first codebook and a maximum allowable average amplitude for a first beam vector,
wherein the maximum allowable average amplitude for the first beam vector is arranged to restrict the average amplitude of the plurality of combination coefficients associated with the first beam vector; and
reporting a Channel State Information feedback and/or a Precoder Matrix Indicator and/or a Precoder Matrix Indicator Rank Indicator,
wherein the Channel State Information feedback and/or the Precoder Matrix Indicator and/or the Precoder Matrix Indicator Rank are arranged to indicate the precoding matrix for configured antenna ports,
wherein the report comprises a bitmap,
wherein the bitmap is arranged to indicate at least selected delay vectors and spatial beam vectors,
wherein the selected delay vectors and the spatial beam vectors are associated with non-zero combination coefficients of the plurality of combination coefficients.