Method and apparatus for determining one shot HARQ-ACK codebook

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, from a base station (BS), a signaling configuring a plurality of downlink (DL) hybrid automatic repeat request (HARQ) processes, and downlink control information (DCI) requesting feedback for each DL HARQ process of the plurality of DL HARQ processes;
• generate, for each DL HARQ process of the plurality of DL HARQ processes, two information bits based on a maximum number of transport blocks (TBs) that can be carried by each DL HARQ process of the plurality of DL HARQ processes being two and spatial bundling not being configured, wherein the two information bits comprise a HARQ-acknowledge (ACK) information bit associated with a scheduled TB and a HARQ-negative ACK (NACK) information bit associated with a non-scheduled TB;
• for each DL HARQ process of the plurality of DL HARQ processes, generate the feedback based on an associated new data indicator (NDI) bit and the two information bits, wherein the HARQ-ACK information bit is before the HARQ-NACK information bit in the feedback;
• and
• transmit, to the BS, a codebook including the feedback for each DL HARQ process of the plurality of DL HARQ processes, wherein the feedback for each DL HARQ process of the plurality of DL HARQ processes is concatenated in the codebook in an order of DL HARQ process number.

A base station (BS) 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 BS to:
• transmit, to a user equipment (UE), a signaling configuring a plurality of downlink (DL) hybrid automatic repeat request (HARQ) processes, and downlink control information (DCI) requesting feedback for each DL HARQ process of the plurality of DL HARQ processes;
• and
• receive, from the UE, a codebook including the feedback for each DL HARQ process of the plurality of DL HARQ processes, wherein:
• the feedback for each DL HARQ process of the plurality of DL HARQ processes is based on an associated new data indicator (NDI) bit and two information bits;
• a maximum number of transport blocks (TBs) that can be carried by each DL HARQ process of the plurality of DL HARQ processes is two and spatial bundling is not configured;
• the two information bits comprise a HARQ-acknowledge (ACK) information bit associated with a scheduled TB and a HARQ-negative ACK (NACK) information bit associated with a non-scheduled TB;
• the HARQ-ACK information bit is before the HARQ-NACK information bit in the feedback;
• and
• the feedback for each DL HARQ process of the plurality of DL HARQ processes is concatenated in the codebook in an order of DL HARQ process number.

A processor for wireless communication, comprising:

• at least one controller coupled with at least one memory and configured to cause the processor to:
• receive, from a base station (BS), a signaling configuring a plurality of downlink (DL) hybrid automatic repeat request (HARQ) processes, and downlink control information (DCI) requesting feedback for each DL HARQ process of the plurality of DL HARQ processes;
• generate, for each DL HARQ process of the plurality of DL HARQ processes, two information bits based on a maximum number of transport blocks (TBs) that can be carried by each DL HARQ process of the plurality of DL HARQ processes being two and spatial bundling not being configured, wherein the two information bits comprise a HARQ-acknowledge (ACK) information bit associated with a scheduled TB and a HARQ-negative ACK (NACK) information bit associated with a non-scheduled TB;
• for each DL HARQ process of the plurality of DL HARQ processes, generate the feedback based on an associated new data indicator (NDI) bit and the two information bits, wherein the HARQ-ACK information bit is before the HARQ-NACK information bit in the feedback;
• and
• transmit, to the BS, a codebook including the feedback for each DL HARQ process of the plurality of DL HARQ processes, wherein the feedback for each DL HARQ process of the plurality of DL HARQ processes is concatenated in the codebook in an order of DL HARQ process number.