Patent ID: 11863372
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A next generation node base station (gNB) central unit-user plane (CU-UP) for a secondary node (SN) in a wireless communication system, the gNB CU-UP comprising:
a transceiver; and
at least one processor configured to:
control the transceiver to receive, from a gNB central unit-control plane (CU-CP) through a first interface providing means for signaling between the gNB CU-CP and the gNB CU-UP, a bearer context modification request message including cell group information for at least one cell based on information on a radio link, the cell group information including:
a cell group identifier (ID) for indicating a secondary cell group (SCG) between a master cell group (MCG) and the SCG, and
downlink transmission information being a second value indicating a resume of downlink transmission in the gNB CU-UP among a first value indicating a stop of downlink transmission and the second value, and
resume downlink transmission to a gNB distributed unit (DU) based on the downlink transmission information,

wherein the gNB CU-CP is associated with a radio resource control (RRC) and a control part of a packet data convergence protocol (PDCP) protocol, and
wherein the gNB CU-UP is associated with a user plane part of the PDCP protocol.