Question: In a 5G network, what is a key aspect of charging data collection for data traffic to/from individual User Equipment (UEs) behind a Public Internet Network (PIN) Element with Gateway Capability?
Option 1: Charging data collection is only supported for UEs directly attached to the 5G Core Network (5GC).
Option 2: Differentiation between backhaul for Public Radio Access Security (PRAS) and other data traffic over the same access is not required.
Option 3: Charging data can only be generated for aggregate UE traffic, not on an individual UE basis.
Option 4: The 5G system must generate charging data that distinguishes between PRAS backhaul and other data traffic over the same access.
Explanation: This is correct because the 5G system needs to support detailed charging data collection, enabling differentiation between various types of data traffic (e.g., PRAS backhaul vs. general internet traffic) for individual UEs, even when they are behind a PIN Element with Gateway Capability or similar configurations. This ensures accurate billing and charging for different services over the same access network.