| CPC H04W 72/23 (2023.01) | 15 Claims |

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1. A method comprising:
transmitting, by a base station (BS) to a user equipment (UE) for which a primary cell and secondary cells (SCells) are configured, information for search spaces to monitor physical downlink control channel (PDCCH) for detection of downlink control information (DCI);
transmitting, by the BS to the UE, bandwidth part (BWP) information via a radio resource control (RRC) signal, wherein the BWP information informs of a specific BWP;
transmitting, by the BS to the UE, the DCI including a first field related to resource assignment for a specific cell and a second field related to a secondary cell dormancy for a group of configured SCells; and
receiving, by the BS from the UE, Hybrid Automatic Repeat and request-acknowledgement (HARQ-ACK) information related with the DCI,
wherein based on a current active BWP for the UE being a dormant BWP, the specific BWP informed by the BWP information is activated for each activated SCell in the group of configured SCells based on a value of a bit related with the group of configured SCells in the second field included in the DCI being 1.
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