Question: In WLAN 3GPP IP Access charging, how does the Packet Data Gateway (PDG) support reporting of charging information per service data flow or per rating group?
Option 1: Through direct integration with the 3GPP AAA Server for dynamic provisioning.
Option 2: By relying solely on pre-defined charging rules within its local database.
Option 3: By integrating a Traffic Plane Function (TPF) to enable Flow Based Charging (FBC).
Option 4: Through periodic updates from the WLAN Access Network (WLAN AN).
Explanation: The PDG supports reporting charging information per service data flow or per rating group by integrating a Traffic Plane Function (TPF), which enables Flow Based Charging (FBC), allowing for flexible and granular charging management.