Patent ID: 11963131
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A notification method, performed by a central unit (CU) in a CU-distributed unit (DU) architecture, the notification method comprising:
sending, by the CU, a first message to the DU, wherein the first message comprises an identifier (ID) of a first data radio bearer (DRB) on which a bearer type change occurs and indication information indicating that the bearer type change occurs; wherein the bearer type of the first DRB changes between any two of the following bearer types: a master node (MN) terminated mater cell group (MCG) bearer, a MN terminated secondary cell group (SCG) bearer, a MN terminated split bearer, a secondary node (SN) terminated MCG bearer, a SN terminated SCG bearer, a SN terminated split bearer, wherein the MCG bearer is a data-plane radio bearer that occupies only air interface resources on an MCG side, the SCG bearer is a data-plane radio bearer that occupies only air interface resources on an SCG side, the split bearer is a data-plane radio bearer that occupies air interface resources on the MCG and SCG sides and that is served by the MN and the SN, the MN terminated indicates a packet data convergence protocol (PDCP) entity in the MN, and the SN terminated indicates a PDCP entity in the SN; and
receiving, by the CU, a second message sent by the DU, wherein the second message comprises a cell group configuration of a layer 2 (L2) handling.