Notification method, apparatus, and communications system
AssigneeHuawei Technologies Co., Ltd.
InventorsHaiyan Luo, Xudong Yang
Life of this patent
Estimating the term…
Abstract
Embodiments provide a notification method, an apparatus, and a communications system, and relate to the communications field, to ensure that a DU performs accurate L2 handling in a CU-DU architecture. The notification method includes: a CU sends a first message to the DU, where the first message includes an ID of a first DRB on which bearer type change occurs and first indication information indicating the DU to perform L2 handling; or the first message includes an ID of a first DRB and second indication information indicating that bearer type change occurs. The CU receives a second message sent by the DU, where the second message includes a cell group configuration of the L2 handling.
Claims30
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.
A notification method, performed by a distributed unit (DU) in a central unit (CU)-DU architecture, the notification method comprising:
- receiving, by the DU, a first message from the CU, 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, and 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;
- performing, by the DU, a layer 2 (L2) handling;
- and
- sending, by the DU, a second message to the CU, wherein the second message comprises a cell group configuration of the L2 handling.
A communications apparatus, deployed on a central unit (CU) in a CU-distributed unit (DU) architecture, the apparatus comprising at least one processor, a transceiver coupled with the at least one processor and configured to communicate with another apparatus, and a non-transitory computer-readable storage medium coupled with the at least one processor and configured to store a program including instructions which, when being executed by the at least one processor, cause the at least one processor to:
- send a first message to the DU, the first message comprising 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, and 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
- receive a second message sent by the DU, the second message comprising a cell group configuration of a layer 2 (L2) handling.
A communications apparatus, deployed on a distributed unit (DU) in a central unit (CU)-DU architecture, the apparatus comprising at least one processor, a transceiver coupled with the at least one processor and configured to communicate with another apparatus, and a non-transitory computer-readable storage medium coupled with the at least one processor and configured to store a program including instructions which, when being executed by the at least one processor, cause the at least one processor to:
- receive a first message from the CU, the first message comprising 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, and 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;
- perform a layer 2 (L2) handling;
- and
- send a second message to the CU, wherein the second message comprises a cell group configuration of the L2 handling.
Dependencies are inferred from the claim text.