6 Charging and accounting aspects

23.2513GPPArchitecture and functional descriptionNetwork sharingRelease 17TS

To support inter-operator accounting in a shared network, it shall be possible to distinguish the share of usage of the shared core network node(s) between the sharing partners. The identity of the serving core network operator (i.e. the one selected by a supporting UE in a network broadcasting a multiple PLMN-id list, or, the one allocated by the network for a non-supporting UE in a network broadcasting a multiple PLMN-id list, or, the one allocated for any UE in a shared network only broadcasting a common PLMN) and whether the core network operator was selected by a supporting UE or allocated by the network to a UE shall be included in MSC, SGSN, Serving GW and GGSN/PDN GW CDR types as specified in TS 32.250 [5] (CS) and TS 32.251 [6] (GPRS/EPS). For handover scenarios, it is up to operator configuration whether the core network operator shall be indicated as selected or allocated to a UE in the CS domain CDR. In CSFB scenario, the core network operator is allocated by the network as specified in clause 4.2.5a, but the indication in the CS domain CDR is up to operator configuration.

As specified in clause 4.4, for online charging, the gsmSCF can use the identifier of the MSC/SGSN to determine the operator selected by a supporting UE or the operator allocated to a UE. The MSC/SGSN shall inform gsmSCF as to whether the UE selected, or the network allocated, the serving operator on that RAT.

Whether the Core Network Operator was selected by a supporting UE or allocated by the network to the UE shall be communicated to the Serving GW and the GGSN/PDN GW and be included in MSC, SGSN, Serving GW and GGSN/PDN GW CDR types as specified in TS 32.250 [5] (CS) and TS 32.251 [6] (GPRS/EPS).