Question: For a streaming service provided over a 3GPP network, how is charging information handled when content is cached on a User Equipment (UE)?
Option 1: Charging information is generated only when the content is initially downloaded to the UE, regardless of consumption.
Option 2: Charging information is not generated for cached content; it's only applicable to real-time streaming services.
Option 3: The decision to generate charging information for cached content is left to the discretion of the network operator.
Option 4: Charging information is generated when the cached content is actually consumed by the user.
Explanation: This aligns with efficient billing practices, ensuring users are charged based on actual consumption of cached content, rather than just its download. This approach supports fair billing for delay-tolerant delivery services, reflecting the real usage patterns of subscribers.