Question: Upon detecting beam failure of the PSCell while the Secondary Cell Group (SCG) is deactivated, what action does the UE take regarding SCG transmission when initiating the SCG failure reporting procedure?
Option 1: Suspend SCG transmission for all SRBs, DRBs, and if any, BH RLC channels immediately.
Option 2: Continue SCG transmission until the SCGFailureInformation message is successfully transmitted.
Option 3: No immediate action on SCG transmission; the UE only initiates transmission of the SCGFailureInformation message.
Option 4: Reset SCG MAC and then resume SCG transmission for SRBs only.
Explanation: According to the specifications, when the procedure is initiated due to beam failure of the PSCell while the SCG is deactivated, the UE's actions do not explicitly include suspending SCG transmission as they do in other scenarios. Instead, the focus is on initiating the transmission of the SCGFailureInformation message (either NR or non-NR depending on the context), without immediate suspension of SCG transmission being mandated in this specific case.