US 2025/0031085 A1 · CHANNEL STATE INFORMATION REPORTING

Abstract

Apparatuses and methods for CSI reporting. A method performed by a user equipment (UE) includes receiving a configuration about a channel state information (CSI) report. The configuration includes information about (i) K>1 non-zero power (NZP) CSI-reference signal (RS) resources and (ii) a codebookType. The codebookType indicates a codebook associated with PCSIRS CSI-RS ports aggregated across the K NZP CSI-RS resources. The method further includes, based on the configuration, determining, a number of layers (v) and when v>1, determining a vector br for each pair of consecutive layers (2r−1,2r) and determining one of: (A) a coefficient cr for each pair of consecutive layers (2r−1,2r) and (B) a coefficient c for each layer l=1, . . . , v. The method further includes transmitting the CSI report including at least one vector indicator indicating vectors {br} and at least one coefficient indicator indicating coefficients. PCSIRS>32, r=1, . . . , ┌v/2┐, and each vector has a length dependent on PCSIRS.

Claims20

Dependent claims

A user equipment (UE) comprising:

a transceiver configured to:
receive a configuration about a channel state information (CSI) report, the configuration including information about (i) K>1 non-zero power (NZP) CSI-reference signal (RS) resources and (ii) a codebookType, wherein the codebook Type indicates a codebook associated with PCSIRS CSI-RS ports aggregated across the K NZP CSI-RS resources;
and
a processor operably coupled to the transceiver, the processor, based on the configuration, configured to:
determine, a number of layers (v);
and
when v>1:
determine a vector br for each pair of consecutive layers (2r−1,2r), and determine one of:
(A) a coefficient cr for each pair of consecutive layers (2r−1,2r), and
(B) a coefficient c for each layer l,
wherein the transceiver is configured to transmit the CSI report including at least one vector indicator indicating vectors {br} and at least one coefficient indicator indicating coefficients,
where r is an index of a pair of consecutive layers, l is an index of a layer, PCSIRS>32, r=1, . . . , [v/2], l=1, . . . , v, and each vector has a length dependent on PCSIRS.

9 more elements

A base station (BS) comprising:

a processor;
and
a transceiver operably coupled to the processor, the transceiver configured to:
transmit a configuration about a channel state information (CSI) report, the configuration including information about (i) K>1 non-zero power (NZP) CSI-reference signal (RS) resources and (ii) a codebookType, wherein the codebookType indicates a codebook associated with PCSIRS CSI-RS ports aggregated across the K NZP CSI-RS resources;
and
receive the CSI report including at least one vector indicator indicating vectors {br} and at least one coefficient indicator indicating coefficients,
wherein, when a number of layers (v)>1:
a vector br is determined for each pair of consecutive layers (2r−1,2r), and one of:
(A) a coefficient cr is determined for each pair of consecutive layers (2r−1,2r), and
(B) a coefficient cl is determined for each layer l,
where r is an index of a pair of consecutive layers, l is an index of a layer, PCSIRS>32, r=1, . . . , ┌v/2┐, l=1, . . . , v, and each vector has a length dependent on PCSIRS.

8 more elements

A method performed by a user equipment (UE), the method comprising:

receiving a configuration about a channel state information (CSI) report, the configuration including information about (i) K>1 non-zero power (NZP) CSI-reference signal (RS) resources and (ii) a codebookType, wherein the codebookType indicates a codebook associated with PCSIRS CSI-RS ports aggregated across the K NZP CSI-RS resources;
based on the configuration, determining a number of layers (v);
and
when v>1:
determining a vector br for each pair of consecutive layers (2r−1,2r), and
determining one of:
(A) a coefficient cr for each pair of consecutive layers (2r−1,2r), and
(B) a coefficient cl for each layer l;
and
transmitting the CSI report including at least one vector indicator indicating vectors {br} and at least one coefficient indicator indicating coefficients,
where r is an index of a pair of consecutive layers, l is an index of a layer, PCSIRS>32, r=1, . . . , [v/2], l=1, . . . , v, and each vector has a length dependent on PCSIRS.

8 more elements

Dependencies are inferred from the claim text.

Channel state information reporting

Life of this patent

Channel state information reporting

Life of this patent

Abstract

Claims20