Question: What is the primary purpose of the NB-IoT UE Identity Index Value Information Element (IE) in the context of E-UTRAN?
Option 1: To enable the eNB to calculate the paging resources for a specific UE, facilitating efficient idle mode operations.
Option 2: To enhance security by encrypting UE identity during transmission over the S1 interface.
Option 3: To prioritize traffic for NB-IoT UEs based on their identity index value in congested networks.
Option 4: To assist in handover decisions by providing historical location data of the UE.
Explanation: The correct answer highlights the key function of the NB-IoT UE Identity Index Value IE, aiding the eNodeB (eNB) in determining paging resources for a User Equipment (UE), crucial for efficiently managing idle mode UEs, ensuring effective reachability when needed.