Question: During a test for UE behavior in a 5G NR setup, what is the expected UE action regarding uplink signal transmission in Cell 1 (PCell) after time point C?
Option 1: The UE shall continue transmitting uplink signals in Cell 1 (PCell) until further instruction.
Option 2: The UE may optionally stop or continue transmitting uplink signals in Cell 1 (PCell).
Option 3: The UE's behavior is not defined for this period, allowing for implementation flexibility.
Option 4: The UE shall have already stopped transmitting uplink signals in Cell 1 (PCell) before time point C.
Explanation: According to the specified test requirements, the UE is mandated to stop transmitting uplink signal in Cell 1 (PCell) no later than time point C, indicating a clear expectation for the cessation of uplink transmissions by this point, ensuring compliance with radio resource management protocols.