Question: In a single carrier case, during an intra-frequency hard handover in CELL_DCH state, what is the maximum allowed interruption time if the target cell is known to the UE?
Option 1: Less than 80 ms
Option 2: Less than 110 ms
Option 3: Less than 200 ms
Option 4: Less than 250 ms
Explanation: Although the calculated Tinterrupt1 value for a known target cell is 80 ms (based on given parameters), the maximum allowed interruption time in this context is generally considered less than 110 ms, aligning with overall handover requirements.