Patent ID: 11876839
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A method of supporting selection of a serving session control node, for a User Equipment, UE, in an Internet Protocol, IP, Multimedia Subsystem, IMS, telecommunication network, the method comprising:
receiving, by a Home Subscriber Server, HSS, from an interrogating session control node, a user authorization request message comprising a UE capability feature mappable to a UE initiated server capability supported by the serving session control node;
in response to the user authorization request message, mapping, by the HSS, the received UE capability feature to the UE initiated server capability for supported by the serving session control node;
transmitting, by the HSS, to the interrogating session control node, a user authorization answer message comprising the server capability supported by the serving session control node, the user authorization answer message triggering the interrogating session control node to select a serving session control node based on the server capability.