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

Claim 5:
6. A source master node (MN) for performing an inter-MN handover without a change of a secondary node (SN), the source MN comprising:
a transceiver; and
a controller coupled with the transceiver and configured to control to:
send, 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,
receive, from the target MN, a handover request acknowledge message including information indicating that a UE context in the SN is kept, and
send, 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.