9.1 Architecture

23.0783GPPCustomised Applications for Mobile network Enhanced Logic (CAMEL) Phase 4Release 17Stage 2TS

9.1.1 Functional Entities used for CAMEL

This subclause describes the functional architecture required to support Mobility Management in CAMEL. Figures 9.1-1 and 9.1-2 show the functional entities involved in CAMEL support of Mobility Management. The architecture in the figure 9.1-1 is applicable to the third phase of CAMEL or higher and the architecture in the figure 9.1-2 is applicable to the fourth phase of CAMEL.

Figure 9.1-1: Functional architecture for CS subscriber support of CAMEL

Figure 9.1-2: Functional architecture for GPRS subscriber support of CAMEL

gsmSCF: see subclause 3.1.

HLR: The HLR contains Mobility management CAMEL Subscription Information (M‑CSI) for those CS subscribers that require CAMEL control of Mobility Management events and Mobility management GPRS CAMEL Subscription Information (MG‑CSI) for those GPRS subscribers that require CAMEL control of Mobility Management events. M‑CSI is sent to the VLR during the Location Update and Restore Data procedures or when M‑CSI is modified in the HLR. The M‑CSI is deleted in the VLR with the Delete Subscriber Data procedure. MG‑CSI is sent to the SGSN during the GPRS Location Updating procedure or when MG‑CSI is modified in the HLR. The MG‑CSI is deleted in the SGSN with the Delete Subscriber Data procedure.

MS: Mobile Station.

MSC: see subclause 4.1.

VLR: After having completed a Mobility Management event from a CS subscriber, the VLR may find it necessary to send a notification to the gsmSCF. The content of M‑CSI indicates which Mobility Management events shall be reported to the gsmSCF.

SGSN: After having completed a Mobility Management event from a GPRS subscriber, the SGSN may find it necessary to send a notification to the gsmSCF. The content of MG‑CSI indicates which Mobility Management events shall be reported to the gsmSCF.

9.1.2 Interfaces defined for CAMEL

This subclause describes the different interfaces applicable to CAMEL control of Mobility Management events. It specifies on a high level the functions specific to CAMEL.

9.1.2.2 VLR – gsmSCF interface

This interface is used by the VLR to send Mobility Management event notifications to the gsmSCF. When processing a mobility management event, the VLR may find it necessary to send a notification to the gsmSCF, depending on the presence of M‑CSI for the subscriber and the contents of M‑CSI.

9.1.2.3 SGSN – gsmSCF interface

This interface is used by the SGSN to send Mobility Management event notifications to the gsmSCF. When processing a mobility management event, the SGSN may find it necessary to send a notification to the gsmSCF, depending on the presence of MG‑CSI for the subscriber and the contents of MG‑CSI.