Question: In a TDD (Time Division Duplex) scenario, what is the maximum time allowed for a User Equipment (UE) to start transmitting the Uplink Dedicated Physical Channel (UL DPCH) in the target cell (cell 2) after the beginning of time period T3 during a handover?
Option 1: Less than 160 ms
Option 2: Exactly 200 ms
Option 3: More than 300 ms but less than 500 ms
Option 4: At least 1 second after T3 begins
Explanation: This answer reflects the specified time constraint for initiating UL DPCH transmission in cell 2 post-T3 onset, ensuring seamless handovers and maintaining service continuity, crucial for optimizing network performance and user experience during handovers.