Channel state information codebook parameter configuration for dynamic antenna port adaptation

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

receiving, via a control message, a channel state information report configuration comprising a first set of codebook parameters associated with at least a first codebook, the first codebook associated with a channel state information measurement at the UE;

determining a second set of codebook parameters associated with a second codebook based at least in part on the first set of codebook parameters associated with the first codebook; and

transmitting, via a physical uplink control channel, a channel state information report that comprises a respective set of subband channel state information parameters and a respective set of wideband channel state information parameters for each of the first codebook and the second codebook based at least in part on the first set of codebook parameters, the second set of codebook parameters, and a channel state information computation at the UE.

2 . The method of claim 1 , wherein transmitting the respective sets of subband channel state information parameters and the respective sets of wideband channel state information parameters comprises:

transmitting, via the channel state information report, a first set of channel state information parameters comprising first wideband channel state information parameters associated with the first codebook and first subband channel state information parameters associated with the first codebook; and

transmitting, via the channel state information report, a second set of channel state information parameters comprising second wideband channel state information parameters associated with the second codebook, wherein the first set of channel state information parameters and the second set of channel state information parameters comprise at least channel quality indicator parameters, precoding matrix indicator parameters, or both.

3 . The method of claim 2 , further comprising:

receiving a control signal that indicates the first codebook is a base codebook, wherein transmitting both the first wideband channel state information parameters and the first subband channel state information parameters associated with the first codebook is based at least in part on the indication that the first codebook is the base codebook.

4 . The method of claim 2 , further comprising:

determining that the first codebook is a base codebook based at least in part on a first quantity of antenna ports associated with the first codebook, a second quantity of antenna ports associated with the second codebook, and a rule for base codebook selection, wherein transmitting both the first wideband channel state information parameters and the first subband channel state information parameters associated with the first codebook is based at least in part on the first codebook being the base codebook.

5 . The method of claim 2 , further comprising:

determining that the first codebook is a base codebook based at least in part on the first codebook being associated with a channel state information reference signal resource in a channel state information reference signal resource set indicated via the channel state information report configuration, wherein transmitting both the first wideband channel state information parameters and the first subband channel state information parameters associated with the first codebook is based at least in part on the first codebook being the base codebook.

6 . The method of claim 1 , wherein the respective sets of wideband channel state information parameters comprise at least channel quality indicator parameters, precoding matrix indicator parameters, or both.

7 . The method of claim 1 , wherein the respective sets of subband channel state information parameters and the respective sets of wideband channel state information parameters comprise at least channel quality indicator parameters, precoding matrix indicator parameters, or both.

8 . The method of claim 1 , wherein determining the second set of codebook parameters comprises:

determining the second set of codebook parameters based at least in part on the first set of codebook parameters associated with the first codebook and a rule for codebook parameter adaptation.

9 . The method of claim 8 , wherein the first set of codebook parameters comprises a first antenna port configuration and a first precoding matrix indicator restriction parameter, and wherein determining the second set of codebook parameters comprises:

determining a second precoding matrix indicator restriction parameter associated with the second codebook based at least in part on the rule for codebook parameter adaptation, wherein the rule for codebook parameter adaptation is based at least in part on the first precoding matrix indicator restriction parameter, the first antenna port configuration, and a second antenna port configuration associated with the second codebook.

10 . The method of claim 8 , wherein the first set of codebook parameters comprises a first antenna port configuration and a first rank restriction parameter, and wherein determining the second set of codebook parameters comprises:

determining a second rank restriction parameter associated with the second codebook based at least in part on the rule for codebook parameter adaptation, wherein the rule for codebook parameter adaptation is based at least in part on the first rank restriction parameter, the first antenna port configuration, and a second antenna port configuration associated with the second codebook.

11 . The method of claim 1 , wherein determining the second set of codebook parameters comprises:

determining the second set of codebook parameters based at least in part on an indication of the second set of codebook parameters in the channel state information report configuration, wherein the channel state information report configuration comprises a plurality of sets of codebook parameters associated with a plurality of codebooks, the plurality of sets of codebook parameters comprising at least the first set of codebook parameters associated with the first codebook and the second set of codebook parameters associated with the second codebook.

12 . The method of claim 1 , wherein:

the first set of codebook parameters comprises a first antenna port configuration, a first precoding matrix indicator restriction, and a first rank restriction for the first codebook; and

the second set of codebook parameters comprises a second antenna port configuration, a second precoding matrix indicator restriction, and a second rank restriction for the second codebook.

13 . The method of claim 1 , further comprising:

receiving one or more channel state information reference signals associated with the channel state information computation at the UE;

computing a first set of channel state information parameters for the first codebook based at least in part on the one or more channel state information reference signals and in accordance with the first set of codebook parameters; and

computing a second set of channel state information parameters for the second codebook based at least in part on the one or more channel state information reference signals and in accordance with the second set of codebook parameters, wherein the channel state information report comprises the first set of channel state information parameters and the second set of channel state information parameters.

14 . A method for wireless communication at a network entity, comprising:

transmitting, via a control message, a channel state information report configuration comprising a first set of codebook parameters associated with at least a first codebook, the first codebook associated with a channel state information measurement at a user equipment; and

receiving, via a physical uplink control channel, a channel state information report that comprises a respective set of subband channel state information parameters and a respective set of wideband channel state information parameters for each of the first codebook and a second codebook based at least in part on the first set of codebook parameters, a second set of codebook parameters associated with the second codebook, and a channel state information computation.

15 . The method of claim 14 , wherein receiving the respective sets of subband channel state information parameters and the respective sets of wideband channel state information parameters comprises:

receiving, via the channel state information report, a first set of channel state information parameters comprising first wideband channel state information parameters associated with the first codebook and first subband channel state information parameters associated with the first codebook; and

receiving, via the channel state information report, a second set of channel state information parameters comprising second wideband channel state information parameters associated with the second codebook, wherein the first set of channel state information parameters and the second set of channel state information parameters each comprise at least channel quality indicator parameters, precoding matrix indicator parameters, or both.

16 . The method of claim 15 , further comprising:

transmitting a control signal that indicates the first codebook is a base codebook, wherein receiving both the first wideband channel state information parameters and the first subband channel state information parameters associated with the first codebook is based at least in part on the first codebook being the base codebook.

17 . The method of claim 14 , wherein the respective sets of wideband channel state information parameters comprises at least channel quality indicator parameters, precoding matrix indicator parameters, or both.

18 . The method of claim 14 , wherein the respective sets of subband channel state information parameters and the respective sets of wideband channel state information parameters comprise at least channel quality indicator parameters, precoding matrix indicator parameters, or both.

19 . The method of claim 14 , wherein transmitting the channel state information report configuration comprises:

transmitting, via the channel state information report configuration, a plurality of sets of codebook parameters associated with a plurality of codebooks, wherein the plurality of sets of codebook parameters comprise at least the first set of codebook parameters associated with the first codebook and the second set of codebook parameters associated with the second codebook.

20 . The method of claim 14 , further comprising:

transmitting one or more channel state information reference signals associated with the channel state information computation, wherein receiving the channel state information report is based at least in part on the one or more channel state information reference signals.

21 . The method of claim 14 , wherein:

the first set of codebook parameters comprises a first antenna port configuration, a first precoding matrix indicator restriction, and a first rank restriction for the first codebook; and

the second set of codebook parameters comprises a second antenna port configuration, a second precoding matrix indicator restriction, and a second rank restriction for the second codebook.

22 . An apparatus for wireless communication at a user equipment (UE), comprising:

at least one processor; and

at least one memory coupled with the at least one processor, with instructions stored in the at least one memory, the instructions being executable by the at least one processor to cause the apparatus to:

receive, via a control message, a channel state information report configuration comprising a first set of codebook parameters associated with at least a first codebook, the first codebook associated with a channel state information measurement at the UE;

determine a second set of codebook parameters associated with a second codebook based at least in part on the first set of codebook parameters associated with the first codebook; and

transmit, via a physical uplink control channel, a channel state information report that comprises a respective set of subband channel state information parameters and a respective set of wideband channel state information parameters for each of the first codebook and the second codebook based at least in part on the first set of codebook parameters, the second set of codebook parameters, and a channel state information computation at the UE.

23 . The apparatus of claim 22 , wherein the instructions to transmit the respective sets of subband channel state information parameters and the respective sets of wideband channel state information parameters are executable by the at least one processor to cause the apparatus to:

transmit, via the channel state information report, a first set of channel state information parameters comprising first wideband channel state information parameters associated with the first codebook and first subband channel state information parameters associated with the first codebook; and

transmit, via the channel state information report, a second set of channel state information parameters comprising second wideband channel state information parameters associated with the second codebook, wherein the first set of channel state information parameters and the second set of channel state information parameters comprise at least channel quality indicator parameters, precoding matrix indicator parameters, or both.

24 . The apparatus of claim 23 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:

receive a control signal that indicates the first codebook is a base codebook, wherein transmitting both the first wideband channel state information parameters and the first subband channel state information parameters associated with the first codebook is based at least in part on the indication that the first codebook is the base codebook.

25 . The apparatus of claim 23 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:

determine that the first codebook is a base codebook based at least in part on a first quantity of antenna ports associated with the first codebook, a second quantity of antenna ports associated with the second codebook, and a rule for base codebook selection, wherein transmitting both the first wideband channel state information parameters and the first subband channel state information parameters associated with the first codebook is based at least in part on the first codebook being the base codebook.

26 . The apparatus of claim 23 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:

determine that the first codebook is a base codebook based at least in part on the first codebook being associated with a channel state information reference signal resource in a channel state information reference signal resource set indicated via the channel state information report configuration, wherein transmitting both the first wideband channel state information parameters and the first subband channel state information parameters associated with the first codebook is based at least in part on the first codebook being the base codebook.

27 . The apparatus of claim 22 , wherein the respective sets of wideband channel state information parameters comprise at least channel quality indicator parameters, precoding matrix indicator parameters, or both.

28 . An apparatus for wireless communication at a network entity, comprising:

at least one processor; and

at least one memory coupled with the at least one processor, with instructions stored in the at least one memory, the instructions being executable by the at least one processor to cause the apparatus to:

transmit, via a control message, a channel state information report configuration comprising a first set of codebook parameters associated with at least a first codebook, the first codebook associated with a channel state information measurement at a user equipment; and

receive, via a physical control channel, a channel state information report that comprises a respective set of subband channel state information parameters and a respective set of wideband channel state information parameters for each of the first codebook and a second codebook based at least in part on the first set of codebook parameters, a second set of codebook parameters associated with the second codebook, and a channel state information computation.

29 . The apparatus of claim 28 , wherein the instructions to receive the respective sets of subband channel state information parameters and the respective sets of wideband channel state information parameters are executable by the at least one processor to cause the apparatus to:

receive, via the channel state information report, a first set of channel state information parameters comprising first wideband channel state information parameters associated with the first codebook and first subband channel state information parameters associated with the first codebook; and

receive, via the channel state information report, a second set of channel state information parameters comprising second wideband channel state information parameters associated with the second codebook, wherein the first set of channel state information parameters and the second set of channel state information parameters each comprise at least channel quality indicator parameters, precoding matrix indicator parameters, or both.

30 . The apparatus of claim 28 , wherein the respective sets of wideband channel state information parameters comprises at least channel quality indicator parameters, precoding matrix indicator parameters, or both.