Scheduling and hybrid automatic repeat request operation and codebook design for new radio carrier aggregation

1. An apparatus for a user equipment (UE), the apparatus including a radio frequency (RF) circuitry interface, and processing circuitry coupled to the RF interface and configured to:

decode control information from a base station, the control information including hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook information for a HARQ-ACK signal in a physical uplink control channel (PUCCH) from the UE to the base station;

decode physical downlink shared channel (PDSCH) transmissions from the base station; and encode the HARQ-ACK signal for transmission to the base station based on the control information and based on the PDSCH;

wherein the HARQ-ACK codebook information includes information on a size of a HARQ-ACK aggregation window for the HARQ-ACK signal; and

wherein the control information is in at least one of a downlink control information (DCI) or radio resource control (RRC) signaling, the processing circuitry to configure the size of the HARQ-ACK aggregation window based on at least one of a decoding of the DCI, or the radio resource control (RRC) signaling.

2. The apparatus of claim 1 , wherein the HARQ-ACK codebook information is based on one of a dynamic HARQ-ACK codebook and a semi-static HARQ-ACK codebook.

3. The apparatus of claim 2 , wherein:

the HARQ-ACK codebook information is based on the dynamic HARQ-ACK codebook;

the control information is in the DCI, and includes information on a counter downlink assignment index (C-DAI);

the C-DAI has values increasing in a frequency-first time-second manner corresponding to the PDSCH transmissions.

4. The apparatus of claim 1 , the processing circuitry to decode a physical downlink control channel (PDCCH) including the control information, the control information including information on a timing delay between the PDCCH and the PDSCH, or a timing delay between the PDCCH and a PUSCH to be sent by the UE to the base station and corresponding to the control information.

5. The apparatus of claim 1 , wherein the HARQ-ACK aggregation window is based on a subcarrier spacing of a component carrier (CC) used for transmission of the PUCCH.

6. The apparatus of claim 1 , further comprising a front-end module coupled to the processing circuitry.

7. An apparatus for a base station, the apparatus including a radio frequency (RF) circuitry interface, and processing circuitry coupled to the RF interface and configured to:

encode control information for transmission to a user equipment (UE), the control information including hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook information for a HARQ-ACK signal in a physical uplink control channel (PUCCH) from the UE to the base station;

encode physical downlink shared channel (PDSCH) transmissions to the UE based on the control information; and

decode the HARQ-ACK signal from the UE;

wherein the HARQ-ACK codebook information includes information on a size of a HARQ-ACK aggregation window for the HARQ-ACK signal; and

wherein the control information is in at least one of a downlink control information (DCI) or radio resource control (RRC) signaling, the control information to be decodable by the UE for the UE to determine the size of the HARQ-ACK aggregation window based on at least one of a decoding of the DCI, or the radio resource control (RRC) signaling.

8. The apparatus of claim 7 , wherein the HARQ-ACK codebook information is based on one of a dynamic HARQ-ACK codebook and a semi-static HARQ-ACK codebook.

9. The apparatus of claim 8 , wherein:

the HARQ-ACK codebook information is based on the dynamic HARQ-ACK codebook;

the control information is in the DCI, and includes information on a counter downlink assignment index (C-DAI);

the C-DAI has values increasing in a frequency-first time-second manner corresponding to the PDSCH transmissions.

10. The apparatus of claim 7 , the processing circuitry to encode a physical downlink control channel (PDCCH) including the control information, the control information including information on a timing delay between the PDCCH and the PDSCH, or a timing delay between the PDCCH and a PUSCH to be sent by the UE to the base station corresponding to the control information.

11. The apparatus of claim 7 , wherein the HARQ-ACK aggregation window is based on a subcarrier spacing of a component carrier (CC) used for transmission of the PUCCH.

12. A method to be performed by a user equipment (UE), comprising:

decoding control information from a base station, the control information including hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook information for a HARQ-ACK signal in a physical uplink control channel (PUCCH) from the UE to the base station;

decoding physical downlink shared channel (PDSCH) transmissions from the base station; and encoding the HARQ-ACK signal for transmission to the base station based on the control information and based on the PDSCH;

wherein the HARQ-ACK codebook information includes information on a size of a HARQ-ACK aggregation window for the HARQ-ACK signal;

wherein the control information is in at least one of a downlink control information (DCI) or radio resource control (RRC) signaling; and

wherein the size of the HARQ-ACK aggregation window is configured based on at least one of a decoding of the DCI, or the radio resource control (RRC) signaling.

13. The method of claim 12 , wherein the HARQ-ACK codebook information is based on one of a dynamic HARQ-ACK codebook and a semi-static HARQ-ACK codebook.

14. The method of claim 13 , wherein:

the HARQ-ACK codebook information is based on the dynamic HARQ-ACK codebook;

the control information is in the DCI, and includes information on a counter downlink assignment index (C-DAI);

the C-DAI has values increasing in a frequency-first time-second manner corresponding to the PDSCH transmissions.

15. The method of claim 12 , wherein the HARQ-ACK aggregation window is based on a subcarrier spacing of a component carrier (CC) used for transmission of the PUCCH.