HARQ acknowledgement codebook transmission in unlicensed band

1. A method comprising:

receiving, by a wireless device, configuration parameters of a bandwidth part (BWP) of a cell, wherein the BWP comprises resource block (RB) sets having respective RB indexes;

receiving, during a downlink control channel monitoring occasion, a plurality of downlink control information (DCI)s via the BWP of the cell, wherein each DCI of the plurality of DCIs is received via a respective RB set of the RB sets of the BWP; and

transmitting a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook comprising HARQ-ACK information bits with each HARQ-ACK information bit corresponding to a respective DCI of the plurality of DCIs, wherein the HARQ-ACK information bits are in order of the RB indexes of the RB sets via which the DCIs are received.

2. The method of claim 1 , further comprising receiving one or more radio resource control (RRC) messages comprising configuration parameters of the cell comprising a plurality of BWPs comprising the BWP.

3. The method of claim 1 , further comprising monitoring downlink control channels, on one or more search spaces in one or more RB sets of the RB sets, for receiving the plurality of DCIs.

4. The method of claim 1 , wherein a HARQ-ACK information bit, of the HARQ-ACK information bits, indicates a positive acknowledgement (ACK) in response to a reception of a transport block being successful.

5. The method of claim 1 , wherein a HARQ-ACK information bit, of the HARQ-ACK information bits, indicates a negative acknowledgement (NACK) in response to a reception of a transport block not being successful.

6. The method of claim 1 , further comprising determining locations of a plurality of HARQ-ACK information, corresponding to the DCIs, in the HARQ-ACK codebook, in an ascending order of the RB set indexes of the RB sets.

7. The method of claim 1 , wherein the HARQ-ACK codebook is transmitted via a PUCCH resource.

8. The method of claim 7 , further comprising determining the PUCCH resource based on a last received DCI among the DCIs.

9. The method of claim 8 , further comprising determining the PUCCH resource further based on a PUCCH resource index indicated in the last received DCI.

10. The method of claim 8 , further comprising determining the last received DCI as a DCI, among the DCIs, which has a highest RB set index.

11. A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive configuration parameters of a bandwidth part (BWP) of a cell, wherein the BWP comprises resource block (RB) sets having respective RB indexes;

receive, during a downlink control channel monitoring occasion, a plurality of downlink control information (DCI)s via the BWP of the cell, wherein each DCI of the plurality of DCIs is received via a respective RB set of the RB sets of the BWP; and

transmit a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook comprising HARQ-ACK information bits with each HARQ-ACK information bit corresponding to a respective DCI of the plurality of DCIs, wherein the HARQ-ACK information bits are in order of the RB indexes of the RB sets via which the DCIs are received.

12. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive one or more radio resource control (RRC) messages comprising configuration parameters of the cell comprising a plurality of BWPs comprising the BWP.

13. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to monitor downlink control channels, on one or more search spaces in one or more RB sets of the RB sets, for receiving the plurality of DCIs.

14. The wireless device of claim 11 , wherein a HARQ-ACK information bit, of the HARQ-ACK information bits, indicates a positive acknowledgement (ACK) in response to a reception of a transport block being successful.

15. The wireless device of claim 11 , wherein a HARQ-ACK information bit, of the HARQ-ACK information bits, indicates a negative acknowledgement (NACK) in response to a reception of a transport block not being successful.

16. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to determine locations of a plurality of HARQ-ACK information, corresponding to the DCIs, in the HARQ-ACK codebook, in an ascending order of the RB set indexes of the RB sets.

17. The wireless device of claim 11 , wherein the HARQ-ACK codebook is transmitted via a PUCCH resource.

18. The wireless device of claim 17 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to determine the PUCCH resource based on a last received DCI among the DCIs, wherein the last received DCI is a DCI, among the DCIs, which has a highest RB set index.

19. The wireless device of claim 18 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to determine the PUCCH resource further based on a PUCCH resource index indicated in the last received DCI.

20. A system comprising:

a base station comprising:

one or more first processors; and

memory storing first instructions that, when executed by the one or more first processors, cause the base station to:

transmit configuration parameters of a bandwidth part (BWP) of a cell, wherein the BWP comprises resource block (RB) sets having respective RB indexes;

transmit, during a downlink control channel monitoring occasion, a plurality of downlink control information (DCI)s via the BWP of the cell, wherein each DCI of the plurality of DCIs is received via a respective RB set of the RB sets of the BWP; and

receive a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook; and

a wireless device comprising:

one or more second processors; and

memory storing second instructions that, when executed by the one or more second processors, cause the wireless device to:

receive the configuration parameters;

receive the plurality of DCIs via the BWP of the cell; and

transmit the HARQ-ACK codebook comprising HARQ-ACK information bits corresponding to a respective DCI of the plurality of DCIs, wherein the HARQ-ACK information bits are in order of the RB indexes of the RB sets via which the DCIs are received.