Charging Information

The SMF collects the following charging information for converged online and offline charging:

  • Usage of access and core network resources: Describes the amount of data that is delivered to and forwarded from the UE.

  • Usage duration: Time interval from PDU Session Establishment to PDU Session Release.

  • User: UE information used by the user for a PDU session.

  • Data network: Data network address as determined by the DNN.

  • Start time: PDU session start time.

  • User location: HPLMN and VPLMN reporting area.

For service-data flows (flow-based charging), the SMF collects the following information:

  • PDU session description.

  • Data that are transmitted in uplink and downlink directions based on the rating-group information, or a combination of rating-group and service ID during volume-based charging.

  • Duration of service data flow based on the rating group, or a combination of rating-group and service ID during event-based charging.

  • The number of events and corresponding time stamps categorized by rating group or combination of the rating group and service id when event based charging applies.

The SMF collects charging information for service data flows per UPF, within a PDU session, based on the rating-group or based on a combination of rating-group and service ID.