Question: Which of the following statements accurately describes the role of assistance information in Inter-RAT (Radio Access Technology) cell selection between E-UTRAN and NB-IoT?
Option 1: E-UTRAN provides assistance information to GERAN but not to NB-IoT for UE cell selection.
Option 2: Both E-UTRAN and NB-IoT can provide mutual assistance information to aid UEs (User Equipment) in selecting cells between the two networks.
Option 3: Assistance information is only used by UEs for selecting cells within the same network technology (either E-UTRAN or NB-IoT), not for inter-RAT selection.
Option 4: The provision of assistance information for cell selection is exclusively a UE-initiated process, not network-provided.
Explanation: This is the correct answer because, as outlined in the context, both E-UTRAN and NB-IoT are capable of providing assistance information to each other to facilitate smoother inter-RAT cell selection for UEs, enhancing the overall network handover experience.