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

Claim 0:
1. A target master node (MN) for performing an inter-MN handover without a change of a secondary node (SN), the target MN comprising:
a transceiver; and
a controller coupled with the transceiver and configured to control to:
receive, from a source 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,
send, to the SN, a request message associated with the SN including the ID of the UE allocated at the SN and an ID of the UE allocated at the target MN,
receive, from the SN, a request acknowledge message for the request message,
send, to the source MN, a handover request acknowledge message including information indicating that a UE context in the SN is kept,
send, to the SN, a configuration completion message,
send, to a mobility management related entity, a path switch request message, and
receive, from the mobility management related entity, a path switch request acknowledge message,

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.