Question: In a Fixed Broadband Access network interworking scenario, what additional information may the PCEF report over the Gx reference point for a WLAN scenario using GTP-based S2b or trusted S2c?
Option 1: UE local IP address, UDP source port number (if available), and P-GW IP address
Option 2: Only H(e)NB Local IP address and UDP source port number (if available)
Option 3: UE local IP address and P-GW IP address, but not the UDP source port number
Option 4: H(e)NB Local IP address, P-GW IP address, and UDP source port number (if available)
Explanation: In the context of interworking with Fixed Broadband Access networks, specifically for a WLAN scenario using GTP-based S2b or trusted S2c, the PCEF is required to support the reporting of additional parameters to facilitate effective policy and charging control. These include the UE's local IP address (to identify the user equipment), the UDP source port number (if available, to specify the communication port), and the P-GW IP address (to identify the gateway through which the UE accesses the network). This comprehensive set of information (Option 1) is crucial for managing network resources and enforcing policies accurately in such scenarios.