4.5 Scenario Four: S13/S13′ – Gf interworking scenario with one IWF

29.3053GPPInterWorking Function (IWF) between MAP based and Diameter based interfacesRelease 17TS

4.5.1 General Description

This interworking scenario is for S13/S13′ interface based on Diameter and Gf interface based on MAP with one IWF in the path.

This IWF scenario can only be an intra PLMN use case for operator to do the partly update of their legacy network.

This interworking scenario is described as below:

Figure 4.5.1-1 S13/S13′ – Gf interworking scenario with one IWF

4.5.2 Network Deployments

This IWF scenario will apply the following network deployment situation:

– ME identity/IMEISV of a user from a Pre Rel8 UMTS/GPRS network can be checked in a visited EPS with E-UTRAN only, which is described as below:

Figure 4.5.2-1 IWF Scenario for network deployment: UE access from EPS with E-UTRAN only

– ME identity/IMEISV of a user from a Pre Rel8 UMTS/GPRS network can be checked in a visited EPS with E-UTRAN and UTRAN/GERAN, which is described as below:

Figure4.5.2-2 IWF Scenario for network deployment: UE access from EPS with E-UTRAN and UTRAN/GERAN