Question: In a scenario where IP flow mobility is supported, what triggers the derivation of IP flow mobility routing rules by the PCEF?
Option 1: Receipt of QoS updates from the PCRF
Option 2: Installation of new PCC rules at the PCEF
Option 3: Changes in the UE's wireless network technology (e.g., from 4G to 5G)
Option 4: IP flow mobility binding information provided by the UE
Explanation: The PCEF relies on IP flow mobility binding information sent by the UE to manage routing rules effectively, ensuring seamless service data flow management across different networks or conditions.