Question: In E-UTRAN, how is SIPTO (Selective IP Traffic Offload) at the Local Network typically supported in terms of gateway configuration?
Option 1: With a standalone S-GW (Serving Gateway) only, without any L-GW (Local Gateway) involvement.
Option 2: Exclusively through a non-collocated L-GW and S-GW setup, requiring separate entities for each gateway.
Option 3: Either with a collocated L-GW in the eNB (eNodeB) or a standalone GW where S-GW and L-GW are collocated.
Option 4: By integrating both S-GW and L-GW functionalities directly into the MME (Mobility Management Entity).
Explanation: This option correctly reflects the supported configurations for SIPTO at the Local Network in E-UTRAN, as it accurately describes two valid scenarios: - Collocated L-GW in the eNB, which streamlines the architecture by integrating the Local Gateway into the base station. - Standalone GW with collocated S-GW and L-GW, which centralizes gateway functions while still supporting SIPTO, enhancing network flexibility. This aligns with efficient traffic management and offloading strategies in Evolved UTRAN networks.