Question: In a TDD/FDD handover scenario, what is the primary factor influencing the interruption time (Tinterrupt) when the target cell's SFN does not need to be decoded by the UE?
Option 1: Type of handover command (intra/inter-frequency)
Option 2: Whether the target cell is known or unknown to the UE
Option 3: The confidence level of correct handovers observed during tests
Option 4: The rate of correct handovers achieved in repeated tests
Explanation: In TDD/FDD handover scenarios, knowing whether the target cell is known or unknown to the User Equipment (UE) significantly impacts the interruption time. This knowledge affects specific timing adjustments, directly influencing the overall handover interruption time, crucial for efficient network operation and a seamless user experience.