Methods and apparatuses for harq-ack codebook determination per dci

A user equipment (UE) for wireless communication, comprising:

• at least one memory;
• and
• at least one processor coupled with the at least one memory and configured to cause the UE to:
• receive a plurality of downlink control information (DCI) formats, wherein each of the plurality of DCI formats schedules one or more physical downlink shared channel (PDSCH) transmissions on one or more carriers, and the plurality of DCI formats indicates a same slot for transmitting a hybrid automatic repeat request acknowledge (HARQ-ACK) codebook, and wherein each of the plurality of DCI formats requires a unified number of HARQ-ACK information bits;
• and
• transmit the HARQ-ACK codebook comprising HARQ-ACK information bits corresponding to each of the plurality of DCI formats.

A base station for wireless communication, comprising:

• at least one memory;
• and
• at least one processor coupled with the at least one memory and configured to cause the base station to:
• transmit, to a user equipment (UE), a plurality of downlink control information (DCI) formats, wherein each of the plurality of DCI formats schedules one or more physical downlink shared channel (PDSCH) transmissions on one or more carriers, and the plurality of DCI formats indicates a same slot for transmitting a hybrid automatic repeat request acknowledge (HARQ-ACK) codebook;
• and
• receive, from the UE, the HARQ-ACK codebook comprising a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook,
• wherein the plurality of DCI formats includes at least two sets, wherein a first set of the at least two sets comprises all first type DCI formats of the plurality of DCI formats and a second set of the at least two sets comprises all second type DCI formats of the plurality of DCI formats, wherein each first type DCI format requires a single HARQ-ACK information bit and each second type DCI format requires more than one HARQ-ACK information bit, and wherein downlink assignment indicators (DAIs) of the first type DCI formats are counted independently from those of the second type DCI formats;
• wherein the first HARQ-ACK sub-codebook comprises HARQ-ACK information bits for DCI formats in the first set;
• and
• wherein the second HARQ-ACK sub-codebook comprises HARQ-ACK information bits for DCI formats in the second set.

A processor for wireless communication, comprising:

• at least one controller coupled with at least one memory and configured to cause the processor to:
• receive a plurality of downlink control information (DCI) formats, wherein each of the plurality of DCI formats schedules one or more physical downlink shared channel (PDSCH) transmissions on one or more carriers, and the plurality of DCI formats indicates a same slot for transmitting a hybrid automatic repeat request acknowledge (HARQ-ACK) codebook;
• divide the plurality of DCI formats into at least two sets, wherein a first set of the at least two sets comprises all first type DCI formats of the plurality of DCI formats and a second set of the at least two sets comprises all second type DCI formats of the plurality of DCI formats, wherein each first type DCI format requires a single HARQ-ACK information bit and each second type DCI format requires more than one HARQ-ACK information bit, and wherein downlink assignment indicators (DAIs) of the first type DCI formats are counted independently from those of the second type DCI formats;
• generate a first HARQ-ACK sub-codebook comprising HARQ-ACK information bits for DCI formats in the first set;
• generate a second HARQ-ACK sub-codebook comprising HARQ-ACK information bits for DCI formats in the second set;
• and
• transmit the HARQ-ACK codebook comprising the first HARQ-ACK sub-codebook and the second HARQ-ACK sub-codebook.