Charging Information
The SMF collects the following charging information for converged online and offline charging:
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Usage of access and core network resources: Describes the amount of data that is delivered to and forwarded from the UE.
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Usage duration: Time interval from PDU Session Establishment to PDU Session Release.
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User: UE information used by the user for a PDU session.
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Data network: Data network address as determined by the DNN.
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Start time: PDU session start time.
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User location: HPLMN and VPLMN reporting area.
For service-data flows (flow-based charging), the SMF collects the following information:
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PDU session description.
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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.
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Duration of service data flow based on the rating group, or a combination of rating-group and service ID during event-based charging.
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Events and timestamps based on rating-group or based on a combination of the rating-group and service ID during event-based charging.
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.