Patent ID: 11937337
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method performed by a Visited Session Management Function, V-SMF, in a core network of a cellular communications system to enable Data over Non-Access Stratum, DoNAS, data delivery in a roaming scenario, the method comprising:
sending from the V-SMF to a Home Session Management Function, H-SMF, a Packet Data Unit, PDU, session create request during PDU session establishment for DoNAS data delivery for a User Equipment, UE, wherein the PDU session create request comprises an indication that a control plane interface between the V-SMF and the H-SMF can be used for DoNAS data delivery, in a roaming scenario; and
receiving a response from the H-SMF, wherein the response from the H-SMF
provides an indication that the control plane interface between the V-SMF and the H-SMF is to be used for a data path for the DoNAS data delivery for the UE, and
wherein tunnel information for uplink traffic towards a Home User Plane Function, H-UPF, is not provided in the response.