Patent ID: 11950313
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A method of performing a bearer type change performed by a first network node in a wireless communication system, the method comprising:
determining that a Layer 2 termination point of a packet data convergence protocol, PDCP, entity corresponding to an upper sublayer of a Layer 2 configuration associated with the configured radio bearer for a user equipment, UE, is relocated;
determining whether there is a modification of a radio link control, RLC, entity corresponding to a lower sublayer of the Layer 2 configuration associated with the configured radio bearer for the UE; and
deciding to change a bearer type of a configured radio bearer for the UE;
transmitting, to the UE an LTE or NR radio resource configuration, RRC,
reconfiguration message comprising a master cell group, MCG, to/from secondary cell group, SCG, bearer type change request and an indication to re-establish MCG and SCG RLC entity for radio bearer, the indication including one or more operations to be performed on a master node, MN, RLC entity, a secondary node, SN, RLC entity, and a PDCP entity at the UE;
wherein the first network node is an E-UTRAN node and is a master node, MN,
wherein a second network node is a New Radio, NR, node and is a secondary node, SN, and
wherein the one or more operations comprise, based on whether a second RLC entity currently configured for the UE is associated with the first network node or the second network node, (i) reconfiguring a logical channel identity associated with the second RLC entity by re-establishing and reconfiguring a first RLC entity to the second RLC entity, or (ii) reconfiguring the logical channel identity by releasing the first RLC entity and establishing the second RLC entity.