Patent ID: 11956798
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A base station in a communication system, the base station comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
transmit, to a terminal, configuration information on a semi-persistent scheduling (SPS) for a multicast,
transmit, to the terminal, first downlink control information (DCI) for activating the SPS,
transmit, to the terminal, a first SPS physical downlink shared channel (PDSCH) after an activation of the SPS corresponding to the configuration information and the first DCI,
receive, from the terminal, hybrid automatic repeat request acknowledgement (HARQ-ACK) information corresponding to the first SPS PDSCH associated with a first feedback scheme,
transmit, to the terminal, a second SPS PDSCH, and
identify HARQ-ACK information corresponding to the second SPS PDSCH associated with a second feedback scheme is received from the terminal,

wherein the first feedback scheme is a feedback type that a terminal generates ACK or NACK as HARQ-ACK information and the second feedback scheme is a feedback type that a terminal generates only NACK as HARQ-ACK information.