A method and apparatus of a device that acquires transmission configuration indicator (TCI) information for secondary cell (SCell) activation. In some embodiments, the TCI information is acquired for SCell activation by determining, during secondary cell (SCell) activation, that beam information to enable a user equipment (UE) to make a reliable layer 1 (L1)-Reference Signal Received Power (RSRP) measurement report is unavailable, perform the L1-RSRP measurement using information of one or more Synchronization Signal Blocks (SSBs) during the SCell activation, wherein the one or more processors perform the L1-RSRP measurement using information of one or more SSBs during the SCell activation by identifying, by the UE, one or more detectable SSBs during the SCell activation and using information of the one or more detectable SSBs for the L1-RSRP measurement.