Question: In a satellite access scenario with discontinuous network coverage, what method may the MME use to optimize paging?
Option 1: Utilize sub-area paging and location information received at or before S1 release.
Option 2: Perform a full network-wide page for all UEs in ECM_IDLE state.
Option 3: Use only the last known ECGI (E-UTRAN Cell Global Identifier) for paging.
Option 4: Request Location Reporting Procedure only when UE is in ECM_IDLE state.
Explanation: In a satellite access scenario with discontinuous network coverage, the MME may utilize sub-area paging and location information received at or before S1 release to optimize paging. This method allows the MME to page the UE in a specific area, reducing the number of cells that need to be paged, thus optimizing the paging process.