Patent ID: 11871462
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A method of a source master node (MN) for performing an inter-MN handover without a change of a secondary node (SN), the method comprising:
sending, to a target MN, a handover request message, wherein the handover request message comprises an identity (ID) of a user equipment (UE) allocated at the SN and an ID of the SN;
receiving, from the target MN, a handover request acknowledge message including information indicating that a UE context in the SN is kept; and
sending, to the UE, a radio resource control (RRC) reconfiguration message for handover to the target MN,
wherein the ID of the UE allocated at the SN is application protocol ID of the UE over an interface between the source MN and the SN.