Granted Patent B2

US 12,640,796 · App. 18/686,376 · Granted May 26, 2026

Inventors: Hung Dinh Ly (San Diego, CA); Yu Zhang (San Diego, CA)

Assignee: QUALCOMM Incorporated

H04B7/0636H04W24/10

Abstract

Claims (70)

1 . A method for wireless communication at a user equipment (UE), comprising:

receiving, from a base station, first control signaling indicating a first codebook configuration associated with a first channel state information reference signal antenna port configuration, wherein the first codebook configuration comprises at least a first set of codebooks;

receiving, from the base station, second control signaling indicating a second codebook configuration associated with a second channel state information reference signal antenna port configuration, wherein the second channel state information reference signal antenna port configuration includes fewer antenna ports than the first channel state information reference signal antenna port configuration, and wherein the second codebook configuration comprises at least a second set of codebooks;

receiving, from the base station, third control signaling indicating at least one codebook of the first set of codebooks or the second set of codebooks;

performing a channel state information measurement based at least in part on the first codebook configuration or the second codebook configuration according to the third control signaling; and

transmitting, to the base station, a channel state information report based at least in part on the channel state information measurement.

2 . The method of claim 1 , wherein receiving the third control signaling comprises:

receiving one or more of a radio resource control message, downlink control information, or a medium access control-control element, indicating the at least one codebook of the first set of codebooks or the second set of codebooks.

3 . The method of claim 1 , wherein receiving the first control signaling comprises:

receiving a channel state information reporting configuration, the channel state information reporting configuration indicating the first codebook configuration associated with the first channel state information reference signal antenna port configuration.

4 . The method of claim 1 , wherein receiving the first control signaling comprises:

receiving one or more of a radio resource control message, downlink control information, or a medium access control-control element, indicating the first codebook configuration associated with the first channel state information reference signal antenna port configuration.

5 . The method of claim 1 , wherein receiving the second control signaling comprises:

receiving one or more of a radio resource control message, downlink control information, or a medium access control-control element, indicating the second codebook configuration associated with the second channel state information reference signal antenna port configuration.

6 . The method of claim 1 , further comprising:

receiving jointly the first control signaling indicating the first codebook configuration associated with the first channel state information reference signal antenna port configuration and the second control signaling indicating the second codebook configuration associated with the second channel state information reference signal antenna port configuration.

7 . The method of claim 1 , wherein receiving the second control signaling comprises:

receiving a channel state information reference signal antenna port configuration index associated with the second channel state information reference signal antenna port configuration,

wherein performing the channel state information measurement is further based at least in part on the channel state information reference signal antenna port configuration index.

8 . The method of claim 1 , further comprising:

determining one or both of a discrete Fourier transform beam restriction or a rank indicator restriction based at least in part on the second codebook configuration associated with the second channel state information reference signal antenna port configuration,

wherein performing the channel state information measurement is further based at least in part on one or both of the discrete Fourier transform beam restriction or the rank indicator restriction.

9 . The method of claim 1 , wherein receiving the second control signaling comprises:

receiving jointly a first indication of the second codebook configuration associated with the second channel state information reference signal antenna port configuration and a second indication of a set of channel state information reference signal resources for the channel state information measurement,

wherein performing the channel state information measurement is further based at least in part on the second codebook configuration and the set of channel state information reference signal resources.

10 . The method of claim 1 , wherein performing the channel state information measurement comprises:

performing the channel state information measurement on a decreased number of antenna elements of a set of antenna elements and based at least in part on the second codebook configuration.

11 . The method of claim 1 , wherein performing the channel state information measurement comprises:

performing the channel state information measurement on a decreased number of antenna panels of a set of antenna panels and based at least in part on the second codebook configuration.

12 . The method of claim 1 , wherein the second channel state information reference signal antenna port configuration comprises a preconfigured channel state information reference signal antenna port configuration and is entirely included within the first channel state information reference signal antenna port configuration.

13 . The method of claim 1 , wherein one or both of the first codebook configuration or the second codebook configuration corresponds to one or more antenna panels.

14 . A method for wireless communication at a base station, comprising:

transmitting, to a user equipment (UE), first control signaling indicating a first codebook configuration associated with a first channel state information reference signal antenna port configuration, wherein the first codebook configuration comprises a first set of codebooks;

transmitting, to the UE, second control signaling indicating a second codebook configuration associated with a second channel state information reference signal antenna port configuration, wherein the second channel state information reference signal antenna port configuration includes fewer antenna ports than the first channel state information reference signal antenna port configuration, and wherein the second codebook configuration comprises a second set of codebooks;

transmitting, to the UE, third control signaling indicating at least one codebook of the first set of codebooks or the second set of codebooks; and

receiving, from the UE, a channel state information report based at least in part on the first codebook configuration or the second codebook configuration according to the third control signaling.

15 . The method of claim 14 , wherein transmitting the third control signaling comprises:

transmitting one or more of a radio resource control message, downlink control information, or a medium access control-control element, indicating the at least one codebook of the first set of codebooks or the second set of codebooks.

16 . The method of claim 14 , wherein transmitting the first control signaling comprises:

transmitting a channel state information reporting configuration, the channel state information reporting configuration indicating the first codebook configuration associated with the first channel state information reference signal antenna port configuration.

17 . The method of claim 14 , wherein transmitting the first control signaling comprises:

transmitting one or more of a radio resource control message, downlink control information, or a medium access control-control element, indicating the first codebook configuration associated with the first channel state information reference signal antenna port configuration.

18 . The method of claim 14 , wherein transmitting the second control signaling comprises:

transmitting one or more of a radio resource control message, downlink control information, or a medium access control-control element, indicating the second codebook configuration associated with the second channel state information reference signal antenna port configuration.

19 . The method of claim 14 , further comprising:

transmitting jointly the first control signaling indicating the first codebook configuration associated with the first channel state information reference signal antenna port configuration and the second control signaling indicating the second codebook configuration associated with the second channel state information reference signal antenna port configuration.

20 . The method of claim 14 , wherein transmitting the second control signaling comprises:

transmitting a channel state information reference signal antenna port configuration index associated with the second channel state information reference signal antenna port configuration.

21 . The method of claim 14 , wherein transmitting the second control signaling comprises:

transmitting jointly a first indication of the second codebook configuration associated with the second channel state information reference signal antenna port configuration and a second indication of a set of channel state information reference signal resources for a channel state information measurement.

22 . The method of claim 14 , wherein one or both of a discrete Fourier transform beam restriction or a rank indicator restriction correspond to the second codebook configuration associated with the second channel state information reference signal antenna port configuration.

23 . The method of claim 14 , wherein the second channel state information reference signal antenna port configuration comprises a preconfigured channel state information reference signal antenna port configuration and is entirely included within the first channel state information reference signal antenna port configuration.

24 . The method of claim 14 , wherein one or both of the first codebook configuration or the second codebook configuration corresponds to one or more antenna panels.

25 . An apparatus for wireless communication, comprising:

one or more processors;

one or more memories coupled with the one or more processors; and

instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to:

receive, from a base station, first control signaling indicating a first codebook configuration associated with a first channel state information reference signal antenna port configuration, wherein the first codebook configuration comprises a first set of codebooks;

receive, from the base station, second control signaling indicating a second codebook configuration associated with a second channel state information reference signal antenna port configuration, wherein the second channel state information reference signal antenna port configuration includes fewer antenna ports than the first channel state information reference signal antenna port configuration, and wherein the second codebook configuration comprises a second set of codebooks;

receive, from the base station, third control signaling indicating at least one codebook of the first set of codebooks or the second set of codebooks;

perform a channel state information measurement based at least in part on the first codebook configuration or the second codebook configuration according to the third control signaling; and

transmit, to the base station, a channel state information report based at least in part on the channel state information measurement.

26 . An apparatus for wireless communication, comprising:

one or more processors;

one or more memories coupled with the one or more processors; and

instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to:

transmit, to a user equipment (UE), first control signaling indicating a first codebook configuration associated with a first channel state information reference signal antenna port configuration, wherein the first codebook configuration comprises a first set of codebooks;

transmit, to the UE, second control signaling indicating a second codebook configuration associated with a second channel state information reference signal antenna port configuration, wherein the second channel state information reference signal antenna port configuration includes fewer antenna ports than the first channel state information reference signal antenna port configuration, and wherein the second codebook configuration comprises a second set of codebooks;

transmit, to the UE, third control signaling indicating at least one codebook of the first set of codebooks or the second set of codebooks; and

receive, from the UE, a channel state information report based at least in part on the first codebook configuration or the second codebook configuration according to the third control signaling.

Assignments (1)

Continuity (1)

References Cited (20)