Question: In E-UTRAN, when performing a feeder link switchover between two eNBs for UEs in enhanced coverage or BL (Broadcast) UEs, what determines the method used for transferring the affected UEs' context?
Option 1: The type of UE (User Equipment) being served (e.g., BL UE vs. non-BL UE)
Option 2: The NTN (Non-Terrestrial Network) Control function's predefined switchover protocol
Option 3: The eNBs' (evolved Node B) implementation and configuration information provided by the NTN Control function
Option 4: The availability of S1 or X2 interfaces between the involved eNBs
Explanation: The correct answer is Option 3 because, according to the specifications, the transfer method (S1 based or X2 based handover) for the affected UEs' context during a feeder link switchover depends on the specific implementation and configuration details of the eNBs, which are informed by the NTN Control function. This highlights the importance of coordinated network management in E-UTRAN operations, especially in scenarios involving non-traditional network configurations like NTN.