5.2.3 CDR generation

32.2773GPPCharging managementProximity-based Services (ProSe) chargingRelease 17Telecommunication managementTS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

5.2.3.1 Triggers for PF-DC-CDR creation and closure

5.2.3.1.1 General

A PF-DC-CDR is used to collect charging information related to the ProSe Direct Communication for a specific group. Multiple containers can be included in the PF-DC-CDR.

When a direct communication usage information report for a group is received from the UE, a PF-DC-CDR shall be opened if no open PF-DC-CDR for this group exists.

When event based charging is used, the corresponding containers are added, and the PF-DC-CDR is closed upon receiving the direct communication usage report.

When session based charging is used, the PF-DC-CDR is closed as described in clause 5.2.2.3.1.2.

5.2.3.1.2 Triggers for PF-DC-CDR charging information addition

The "List of Transmission/Reception Data" attributes of the PF-DC-CDR consists of a set of containers, which are added when specific trigger conditions are met and if UE is configured to include this charging information in the usage information report. Details of the container are defined in clause 6.1.3.4. Table 5.2.3.1.2.1 identifies which conditions are supported to trigger PF-DC-CDR charging information addition for "List of Transmission/Reception Data" attributes.

Table 5.2.3.1.2.1: Triggers for PF-DC-CDR charging information addition "List of Transmission/Reception Data"

Trigger Conditions	Description/Behaviour
Receipt of usage information report	On receipt of usage information report, "List of Transmission/Reception Data" containers shall be added to the PF-DC-CDR for the groups with usage to report.

The "List of Coverage Info" attribute of the PF-DC-CDR consists of a set of containers including coverage status, time stamps and optionally list of location changes (i.e., ECGI change) and timestamps when in coverage. These containers are added when specific trigger conditions are met and if UE is configured to include this charging information in the usage information report. Table 5.2.3.1.2.2 identifies which conditions are supported to trigger PF-DC-CDR charging information addition for " List of Coverage Info" attribute.

Table 5.2.3.1.2.2: Triggers for PF-DC-CDR charging information addition "List of Coverage Info"

Trigger Conditions	Description/Behaviour
Receipt of usage information report	On receipt of usage information report, "List of Coverage Info" containers shall be added to all open group PF-DC-CDRs.

The "List of Radio Parameter Set Info" attribute of the PF-DC-CDR consists of a list of radio parameter sets configured in the UE for direct communication use and activation timestamps. A new set of radio parameters is added to the list for all open group PF-DC-CDRs, when it becomes active on the UE and then received by the ProSe Function in a usage information report.

The "List of Application Specific Data" attribute of the PF-DC-CDR is a list of data blocks provided by the application in the UE. A new data block can be added to the list for all open group PF-DC-CDRs, when the UE sends usage information report(s) to the ProSe Function.

The "List of Transmitters" attribute of the PF-DC-CDR is a list of transmitters detected for a group. A new transmitter is added to the list in the PF-DC-CDR for the group with usage to report, when it is detected by the UE and then received by the ProS e Function in a usage information report.

5.2.3.1.3 Triggers for PF-DC-CDR closureThe PF-DC-CDR shall be closed on encountering any of the following trigger conditions:

– When event based charging is used, and the usage information report for the group is received from UE.

– When session based charging is used, and the charging session is closed as described in clause 5.2.2.3.1.2. In this case, a further PF-DC-CDR is opened when another usage information report for the group is received from the UE.