Method and device for harq-ack transmission in wireless communication system

A method performed by a base station in a communication system, the method comprising:

• transmitting, to a user equipment (UE), a time domain resource allocation (TDRA) table defining respective sets of slot offsets K0, start and length indicators (SLIV), and physical downlink shared channel (PDSCH) mapping type;
• and
• receiving, from the UE, Type-1 hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for physical downlink shared channels (PDSCHs) in slots defined based on an extended set of slot timing values,
• wherein the extended set of slot timing values K1,ext is identified based on a set of slot timing values K1, the set of slot offsets K0 of the TDRA table, an uplink subcarrier spacing configuration μUL and a downlink subcarrier spacing configuration μDL.

A user equipment (UE) in a communication system, the UE comprising:

• a transceiver;
• and
• at least one processor configured to:
• receive, from a base station, a time domain resource allocation (TDRA) table defining respective sets of slot offsets K0, start and length indicators (SLIV), and physical downlink shared channel (PDSCH) mapping type,
• identify a set of slot timing values K1,
• identify an extended set of slot timing values K1,ext, based on the set of slot timing values K1, the sets of slot offsets K0 of the TDRA table, an uplink subcarrier spacing configuration μUL and a downlink subcarrier spacing configuration μDL, and
• transmit, to the base station, Type-1 hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for physical downlink shared channels (PDSCHs) received in slots defined based on the extended set of slot timing values.

A base station in a communication system, the base station comprising:

• a transceiver;
• and
• at least one processor configured to:
• transmit, to a user equipment (UE), a time domain resource allocation (TDRA) table defining respective sets of slot offsets K0, start and length indicators (SLIV), and physical downlink shared channel (PDSCH) mapping type, and
• receive, from the UE, Type-1 hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for physical downlink shared channels (PDSCHs) in slots defined based on an extended set of slot timing values,
• wherein the extended set of slot timing values K1,ext is identified based on a set of slot timing values K1, the set of slot offsets K0 of the TDRA table, an uplink subcarrier spacing configuration μUL and a downlink subcarrier spacing configuration μDL.