Patent ID: 11889520
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A method for transmitting a signal by a base station in a wireless communication system, the method comprising:
transmitting, to a user equipment (UE), a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH);
performing synchronization with the UE based on the PSS and the SSS;
configuring at least one physical uplink control channel (PUCCH) resource set associated with at least one downlink multicast channel;
generating downlink control information (DCI) having a cyclic redundancy check (CRC) scrambled with a specific group-radio network temporary identifier (G-RNTI); and
transmitting a physical downlink control channel (PDCCH) carrying the DCI in a search space for scheduling of a specific downlink multicast channel among the at least one downlink multicast channel,
wherein a specific PUCCH resource set associated with the specific downlink multicast channel is mapped to a specific downlink frequency band having the search space for the transmitting of the PDCCH,
wherein a PUCCH resource for reception of hybrid automatic repeat request (HARQ)-acknowledgement (ACK) for the specific downlink multicast channel among one or more PUCCH resources included in the specific PUCCH resource set is indicated through the DCI,
wherein the at least one PUCCH resource set includes a first PUCCH resource set associated with the specific downlink multicast channel received in an RRC idle/inactive mode and a second PUCCH resource set associated with the specific downlink multicast channel received in an RRC connected mode, and
wherein the specific PUCCH resource set indicated through the DCI is determined in the first PUCCH resource set or the second PUCCH resource set based on whether the UE is in the RRC idle/inactive mode or the RRC connected mode.