Question: In a TDD (Time Division Duplex) scenario, what is the maximum allowed time for a User Equipment (UE) to complete cell re-selection, from the start of the evaluation period to sending an RRC CONNECTION REQUEST message to the new cell?
Option 1: 5 seconds
Option 2: 8 seconds
Option 3: 10 seconds
Option 4: 12 seconds
Explanation: The correct answer is based on the understanding of cell re-selection delay in TDD mode, which involves the time taken by a UE to evaluate and switch to a new cell (Cell 2) and initiate a location registration. This process includes evaluating the new cell's suitability (TevaluateTDD) and receiving necessary system information (TSI). The specified maximum duration for this entire process to ensure efficient network operation is less than 8 seconds, making Option 2 the correct choice. This highlights the importance of timely cell re-selection in maintaining seamless connectivity in wireless communications.