Question: In a scenario where a User Equipment (UE) camps on an Frequency Division Duplexing (FDD) cell and then reselects to a 3.84 Mcps Time Division Duplexing (TDD) cell, what event marks the end of the cell re-selection delay?
Option 1: When the UE's cell quality level monitoring detects a better ranked TDD cell.
Option 2: Upon successful synchronization with the new TDD cell's downlink signal.
Option 3: When the UE starts sending the Radio Resource Control (RRC) CONNECTION REQUEST message to the new TDD cell for Location Registration.
Option 4: After the UE completes the handover procedure and releases resources from the original FDD cell.
Explanation: The cell re-selection delay is specifically defined as ending when the change in cell quality levels prompts the UE to initiate a connection request to a better-ranked cell, which is marked by the UE sending an RRC CONNECTION REQUEST message for Location Registration on the new cell. This action signifies the UE's decision to switch based on the changed cell quality levels, making Option 3 the correct endpoint of the delay.