Question: What is the primary purpose of the PWS (Public Warning System) Restart Indication procedure in an E-UTRAN (Evolved Universal Terrestrial Radio Access Network)?
Option 1: To notify the eNB (eNodeB) about a change in MME (Mobility Management Entity) configuration.
Option 2: To initiate a software update for all cells in the eNB from the CBC (Cell Broadcast Centre).
Option 3: To request PWS information for a specific UE (User Equipment) from the CBC via the MME.
Option 4: To inform the MME that PWS information for some or all eNB cells is available for reloading from the CBC if needed.
Explanation: The correct answer, Option 4, aligns with the procedure's defined purpose. It highlights the notification process from the eNB to the MME about the availability of PWS information for reloading from the CBC, which is crucial for ensuring public warning systems can be effectively updated or restored across cells in the network.