Question: What is a key consideration for PGW-C in selecting an appropriate PGW-U to ensure efficient service delivery for a UE, especially when a specific functionality like L7 based traffic detection is required?
Option 1: The geographical location of the UE in relation to the nearest RAN node.
Option 2: Matching the required functionality (e.g., L7 based traffic detection) with the capabilities of the UP function of the PGW-U.
Option 3: Always selecting the PGW-U with the lowest dynamic load, regardless of other factors.
Option 4: Prioritizing the selection based solely on the UE's support for dual connectivity with NR.
Explanation: The correct answer is Option 2 because the PGW-C needs to ensure that the selected PGW-U can provide the specific functionalities required for the UE's session (e.g., L7 based traffic detection). This matching process guarantees that the service requirements for the UE are met, highlighting the importance of capability alignment in PGW-U selection for efficient and tailored service delivery.