Method and apparatus for transmitting or receiving signal in wireless communication system

A terminal in a wireless communication system, comprising:

• a transceiver;
• and
• a processor configured to control the transceiver to perform operations, the operations comprising:
• receiving information about one or more periodic uplink resources for transmission of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information for multicast data;
• monitoring a physical downlink control channel (PDCCH) in a search space for multicast configured on a specific downlink frequency resource;
• and
• detecting, as a result of the monitoring of the PDCCH, downlink control information (DCI) having a cyclic redundancy check (CRC) scrambled with a group-radio network temporary identifier (G-RNTI),
• wherein, on a basis that the DCI indicates a specific index, and at least one of the one or more periodic uplink resources is associated with the specific index indicated by the DCI, the processor transmits an activation confirmation message to activate the at least one periodic uplink resource associated with the specific index.

A device for controlling a terminal in a wireless communication system, comprising:

• a memory configured to store instructions;
• and
• a processor configured to execute the instructions to control a transceiver to perform operations,
• wherein the operations of the processor comprises:
• receiving information about one or more periodic uplink resources for transmission of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information for multicast data;
• monitoring a physical downlink control channel (PDCCH) in a search space for multicast configured on a specific downlink frequency resource;
• and
• detecting, as a result of the monitoring of the PDCCH, downlink control information (DCI) having a cyclic redundancy check (CRC) scrambled with a group-radio network temporary identifier (G-RNTI),
• wherein, on a basis that the DCI indicates a specific index, and at least one of the one or more periodic uplink resources is associated with the specific index indicated by the DCI, the processor transmits an activation confirmation message to activate the at least one periodic uplink resource associated with the specific index.

A method for receiving a signal by a base station in a wireless communication system, the method comprising:

• transmitting information about one or more periodic uplink resources for transmission of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information for multicast data;
• and
• transmitting, in a search space for multicast configured on a specific downlink frequency resource, a physical downlink control channel (PDCCH) carrying downlink control information (DCI) having a cyclic redundancy check (CRC) scrambled with a group-radio network temporary identifier (G-RNTI),
• wherein the base station is configured to:
• attempt to receive an activation confirmation message from a terminal on a basis that the DCI indicates a specific index, and at least one of the one or more periodic uplink resources is associated with the specific index indicated by the DCI;
• and
• on a basis that the activation confirmation message is received, determine that activation of the at least one periodic uplink resource is successful for the terminal.

A base station in a wireless communication system, comprising:

• a transceiver;
• and
• a processor configured to control transceiver to perform operations, the operations comprising:
• transmitting information about one or more periodic uplink resources for transmission of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information for multicast data;
• and
• transmitting, in a search space for multicast configured on a specific downlink frequency resource, a physical downlink control channel (PDCCH) carrying downlink control information (DCI) having a cyclic redundancy check (CRC) scrambled with a group-radio network temporary identifier (G-RNTI),
• wherein the processor is configured to:
• attempt to receive an activation confirmation message from a terminal on a basis that the DCI indicates a specific index, and at least one of the one or more periodic uplink resources is associated with the specific index indicated by the DCI;
• and
• on a basis that the activation confirmation message is received, determine that activation of the at least one periodic uplink resource is successful for the terminal.