Method and apparatus for determining transmission timing in wireless communication system

A user equipment (UE), the UE comprising:

• a transceiver;
• and
• at least one processor configured to:
• control the transceiver to receive a physical downlink control channel (PDCCH) including information for downlink semi-persistent scheduling (DL SPS) release from a base station;
• and
• control the transceiver to transmit an uplink channel including hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDCCH including the information for DL SPS release to the base station,
• wherein a first symbol of the uplink channel is transmitted at least after a processing time (Tproc,3) from when a last symbol of the PDCCH is received,
• wherein the processing time is determined based on a smaller subcarrier spacing value between a subcarrier spacing value of the PDCCH and a subcarrier spacing value of the uplink channel, and
• wherein the subcarrier spacing value is a parameter (μ) indicating numerology associated with subcarrier spacing.

A method for receiving hybrid automatic repeat request acknowledgement (HARQ-ACK) information by a base station in a wireless communication system, the method comprising:

• transmitting a physical downlink control channel (PDCCH) including information for downlink semi-persistent scheduling (DL SPS) release to a user equipment (UE);
• and
• receiving an uplink channel including HARQ-ACK information for the PDCCH including the information for DL SPS release from the UE,
• wherein a first symbol of the uplink channel is received at least after a processing time (Tproc,3) from when a last symbol of the PDCCH is transmitted,
• wherein the processing time is determined based on a smaller subcarrier spacing value between a subcarrier spacing value of the PDCCH and a subcarrier spacing value of the uplink channel, and
• wherein the subcarrier spacing value is a parameter (μ) indicating numerology associated with subcarrier spacing.

A base station, the base station comprising:

• a transceiver;
• and
• at least one processor configured to:
• control the transceiver to transmit a physical downlink control channel (PDCCH) including information for downlink semi-persistent scheduling (DL SPS) release to a user equipment (UE);
• and
• control the transceiver to receive an uplink channel including hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDCCH including the information for DL SPS release from the UE,
• wherein a first symbol of the uplink channel is received at least after a processing time (Tproc,3) from when a last symbol of the PDCCH is transmitted,
• wherein the processing time is determined based on a smaller subcarrier spacing value between a subcarrier spacing value of the PDCCH and a subcarrier spacing value of the uplink channel, and
• wherein the subcarrier spacing value is a parameter (μ) indicating numerology associated with subcarrier spacing.