Study on enhanced IP Multimedia Subsystem (IMS) to 5GC integration Phase 2; CT WG1 aspects
The aim of this Technical Report is to study and specify potential enhancements to the 5G System to enable IMS FE to integrate with the 5GC network functions to enable IMS applications to directly leverage the features and capabilities of 5GC.
The specific capabilities of 5GC included in this study:
- In regard to 5GC network slicing; what enhancements (if any) are necessary for UE and 5G core network to efficiently support devices and networks with multiple slices and different services offered by the IMS network per slice?
- How to route IMS traffic via a localized UPF.
- How to place IMS application server in localized environments.
- How can IMS utilize services provided by 5GC NFs other than PCF and HSS.