Intra-RAT handovers with core network change

A method implemented by a user equipment in a wireless communication network of performing a handover from a source node connected to a first core network to a target node connected to a second core network, said method comprising:

• receiving, from the source node, a mobility command including an indication of a radio access technology, RAT, used by the target node and a message container containing configuration information for the target node;
• determining based on the indication of the RAT used by the target node whether to treat the handover as an inter-RAT handover or as an intra-RAT handover with a core network change, wherein the determining comprises determining to treat the handover as an intra-RAT handover with a core network change when the indication indicates a first type of RAT;
• and
• performing a radio resource control, RRC, procedure for an intra-RAT handover with a core network change based on the determination to treat the handover as an intra-RAT handover with a core network change, wherein performing the RRC procedure for an intra-RAT handover with a core network change comprises inter-RAT handover signaling procedure and, upon successfully completing the handover, remaining in a Radio Resource Control Connected, RRC_CONNECTED, state and ending the RRC procedure.