Question: In a Policy and Charging Control (PCC) architecture, who assigns the Packet-Filter-Identifier for PCC rules resulting from UE-initiated (User Equipment-initiated) resource allocation?
Option 1: The Serving Gateway (S-GW)
Option 2: The Mobility Management Entity (MME)
Option 3: The User Equipment (UE) itself
Option 4: The Policy and Charging Rules Function (PCRF)
Explanation: In the context of PCC, the PCRF is responsible for policy decisions and charging rules. For UE-initiated resource allocations, the PCRF assigns a unique packet filter identifier per UE within its scope to ensure proper management and application of policies.