公开(公告)号：US11424807B2

公开(公告)日：2022-08-23

申请号：US16705368

申请日：2019-12-06

Applicant: Nokia Technologies Oy

Inventor： Rana Ahmed Salem ,  Filippo Tosato ,  Marco Maso ,  William Hillery

IPC: H04B7/06 ,  H04B7/0456 ,  H04L1/16

Abstract: In accordance with an example embodiment of the present invention, a method comprising: selecting, by a user equipment, a subset of linear combination coefficients from a linearized two-dimensional matrix having columns of frequency domain components and rows of spatial beams components for channel state information determination, wherein the number of linear combination coefficients in the subset is less than all of the linear combination coefficients; determining indication comprising information associated with column indices of the selected subset of linear combination coefficients from the linearized two-dimensional matrix, wherein the indication excludes the index of the column with lowest index of the linearized two-dimensional matrix; determining compressed channel state information comprising locations in the linearized two-dimensional matrix of the subset of linear combination coefficients and corresponding values of the linear combination coefficients at those locations; and reporting, from the user equipment toward the base station, the compressed channel state information.

公开(公告)号：US11159346B2

公开(公告)日：2021-10-26

申请号：US16927972

申请日：2020-07-13

Applicant: Nokia Technologies Oy

Inventor： Eugene Visotsky ,  Rana Ahmed Salem ,  Frederick Vook

IPC: H04L25/02 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/10

Abstract: A method for implementing co-polarized feedback for frequency domain compression is disclosed. The method includes feeding back compressed channel state information, wherein at least one layer is restricted to be transmitted on one polarization and the feedback for the at least one layer only involves the channel state information on the one polarization.