WO2019184482A1 - Service bearer configuration method and apparatus - Google Patents

Abstract

The present disclosure provides a service bearer configuration method and apparatus. Said method is applied to a first CU, and comprises: configuring a mapping relationship between a flow and a DRB; sending the mapping relationship to a second CU; the first CU being a CU that provides a service for a terminal, and the second CU being a CU that provides a service for an IAB.

Description

Service bearer configuration method and device

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201100288746.5, filed on Jan. 30, s.

Technical field

The present disclosure relates to the field of communications, and in particular, to a service bearer configuration method and apparatus.

Background technique

In a 5G system, most of the nodes on the network side have wired connections, that is, gNBs (NR NodeBs) are connected by wired links, gNBs and core network nodes, such as access and mobility management functions (Access and Mobility Management Function). , AMF), User Plane Function (UPF), etc., and the connection between the two is also a wired link.

The 5G basic user plane protocol layer includes Service Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and media access control. (Medium Access Control, MAC) and Physical Layer (PHY Layer). The control plane protocol layer includes Non-Access Stratum (NAS), Radio Resource Control (RRC), PDCP, RLC, MAC, and PHY. The network interfaces include the GPRS Tunnel Protocol for User Plane (GTP-U) and the Stream Control Transport Protocol (SCTP).

In the future development of mobile communication systems, in order to better meet the needs of users and greatly improve network capacity and throughput, more transmission nodes and larger transmission bandwidth will be introduced. In a 5G network, the number of access sites is greatly improved, but there is no guarantee that all access sites have wired backhaul conditions, and the introduction of wireless access sites cannot be avoided. In the face of the higher transmission rate and transmission delay of 5G, higher requirements will be placed on the wireless backhaul network. However, in the related art, the L2 Relay (Wireless Backhaul) network for the 5G Layer 2 relay does not provide a set of service data bearer methods for establishing and updating the serving UE, and is unable to meet the requirements of multipath multihop. Therefore, it is necessary to find a solution to meet the above needs.

Summary of the invention

An embodiment of the present disclosure provides a service bearer configuration method, which is applied to a first centralized unit CU, and includes:

Configuring a mapping relationship between the flow and the data radio bearer DRB;

Transmitting the mapping relationship to a second CU; the first CU is a CU serving a terminal, and the second CU is a CU serving an integrated access backhaul relay node IAB.

Optionally, the step of mapping the configuration flow to the data radio bearer DRB includes:

And establishing a mapping relationship between the flow and the DRB according to the received protocol data unit PDU session establishment message.

Optionally, after the mapping between the flow and the DRB is established, the method further includes:

The mapping relationship between the flow and the DRB is updated according to the received PDU session modification message.

Optionally, the step of mapping the configuration flow to the data radio bearer DRB includes:

The mapping relationship between the flow and the DRB is configured according to at least one of the priority level of the quality of service QOS of the DRB and the priority level of the QOS of the flow.

Optionally, after the mapping between the configuration flow and the data radio bearer DRB, the method further includes:

And transmitting the mapping relationship to the first distributed unit DU by using a terminal context, where the first DU is a DU that provides services for the terminal.

Optionally, after the mapping between the configuration flow and the data radio bearer DRB, the method further includes:

Generating a radio resource control RRC reconfiguration message according to the mapping relationship;

And transmitting the RRC reconfiguration message to the terminal by using the first DU, where the first DU is a DU that provides services for the terminal.

An embodiment of the present disclosure further provides a service bearer configuration apparatus, including:

a first configuration module, configured to configure a mapping relationship between the flow and the data radio bearer DRB;

The first sending module is configured to send the mapping relationship to the second CU; the first CU is a CU that provides services for the terminal, and the second CU is a CU that provides services for the integrated access backhaul relay node IAB.

Embodiments of the present disclosure also provide a service bearer configuration apparatus including a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor;

The processor is configured to read a program in the memory, and perform the following process: configuring a mapping relationship between the stream and the data radio bearer DRB;

The transceiver is configured to: send the mapping relationship to a second CU; the first CU is a CU that provides services for the terminal, and the second CU is a CU that provides services for the integrated access backhaul relay node IAB.

Optionally, the processor is further configured to: establish a mapping relationship between the flow and the DRB according to the received protocol data unit PDU session establishment message.

Optionally, the processor is further configured to: update the mapping relationship between the flow and the DRB according to the received PDU session modification message.

Optionally, the processor is further configured to: configure a mapping relationship between the flow and the DRB according to at least one of a priority level of the quality of service QOS of the DRB and a priority level of the QOS of the flow.

Optionally, the transceiver is further configured to: send the mapping relationship to the first distributed unit DU by using a terminal context, where the first DU is a DU that provides services for the terminal.

Optionally, the processor is further configured to: generate a radio resource control RRC reconfiguration message according to the mapping relationship; the transceiver is further configured to: send the RRC reconfiguration message to the terminal by using the first DU, The first DU is a DU that provides services to the terminal.

An embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, the program being executed by a processor, the step of the service bearer configuration method according to any one of the preceding claims.

The embodiment of the present disclosure further provides a service bearer configuration method, which is applied to the second centralized unit CU, and includes:

Receiving a first mapping relationship between the stream sent by the first CU and the data radio bearer DRB; the first CU is a CU serving the terminal, and the second CU is provided for the integrated access backhaul relay node IAB Service CU;

Determining, according to the first mapping relationship, a second mapping relationship between the flow and the DRB; the first mapping relationship is a mapping relationship between the flow and a DRB for carrying terminal data, where the second mapping relationship is a flow A mapping relationship with a DRB for carrying IAB data.

Optionally, the step of configuring the second mapping relationship between the flow and the DRB according to the first mapping relationship includes:

And configuring, according to the first mapping relationship, a third mapping relationship between a DRB for carrying terminal data and a DRB for carrying IAB data;

And configuring a second mapping relationship between the flow and the DRB according to the third mapping relationship and the first mapping relationship.

Optionally, the step of configuring a third mapping relationship between the DRB for carrying the terminal data and the DRB for carrying the IAB data according to the first mapping relationship includes:

And configuring, according to the first mapping relationship, between the DRB for carrying the terminal data and the DRB for carrying the IAB data, according to at least one of the priority level of the quality of service QOS of the DRB and the priority level of the QOS of the stream. The third mapping relationship.

Optionally, the step of configuring a third mapping relationship between the DRB for carrying the terminal data and the DRB for carrying the IAB data according to the first mapping relationship includes:

And according to the first mapping relationship, establishing a DRB for carrying IAB data for carrying DRB mapping of terminal data, or mapping a DRB for carrying terminal data to an already established DRB for carrying IAB data.

Optionally, after the second mapping relationship between the configuration flow and the DRB, the method further includes:

Transmitting the second mapping relationship to a user plane function UPF that provides services for the IAB.

Optionally, after the second mapping relationship between the configuration flow and the DRB, the method further includes:

Transmitting the second mapping relationship to the second distributed unit DU by using a terminal context, where the second DU is a DU serving the IAB.

Optionally, after the second mapping relationship between the configuration flow and the DRB, the method further includes:

Generating a radio resource control RRC reconfiguration message according to the second mapping relationship and the third mapping relationship;

And transmitting the RRC reconfiguration message to the mobile terminal MT on the IAB node by using the second DU, where the second DU is a DU serving the IAB.

An embodiment of the present disclosure further provides a service bearer configuration apparatus, including:

a first receiving module, configured to receive a first mapping relationship between the stream sent by the first CU and the data radio bearer DRB; the first CU is a CU serving the terminal, and the second CU is an integrated access backhaul The CU that the relay node IAB provides the service;

a second configuration module, configured to configure a second mapping relationship between the flow and the DRB according to the first mapping relationship; the first mapping relationship is a mapping relationship between the flow and the DRB for carrying the terminal data, where The second mapping relationship is a mapping relationship between the flow and the DRB for carrying the IAB data.

Embodiments of the present disclosure also provide a service bearer configuration apparatus including a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor;

The transceiver is configured to: receive a first mapping relationship between a stream sent by the first CU and a data radio bearer DRB; the first CU is a CU that provides services for the terminal, and the second CU is an integrated access backhaul The CU that the relay node IAB provides the service;

The processor is configured to read a program in the memory, and perform the following process: configuring a second mapping relationship between the flow and the DRB according to the first mapping relationship; the first mapping relationship is a flow and is used to carry terminal data. Mapping relationship between DRBs, the second mapping relationship is a mapping relationship between a stream and a DRB for carrying IAB data.

Optionally, the processor is further configured to: configure, according to the first mapping relationship, a third mapping relationship between a DRB for carrying terminal data and a DRB for carrying IAB data; according to the third mapping The relationship and the first mapping relationship configure a second mapping relationship between the flow and the DRB.

Optionally, the processor is further configured to: according to the first mapping relationship, configure at least one of a priority level of a quality of service QOS of the DRB and a priority level of a QOS of the stream, configured to carry terminal data. A third mapping relationship between the DRB and the DRB for carrying IAB data.

Optionally, the processor is further configured to: according to the first mapping relationship, establish a DRB for carrying IAB data with a DRB mapping for carrying terminal data, or map a DRB for carrying terminal data to The established DRB for carrying IAB data.

Optionally, the transceiver is further configured to: send the second mapping relationship to a user plane function UPF that provides services for the IAB.

Optionally, the transceiver is further configured to: send the second mapping relationship to the second distributed unit DU by using a terminal context, where the second DU is a DU that provides services for the IAB.

Optionally, the processor is further configured to: generate a radio resource control RRC reconfiguration message according to the second mapping relationship and the third mapping relationship; the transceiver is further configured to: reconfigure the RRC The message is transmitted by the second DU to the mobile terminal MT on the IAB node, which is the DU serving the IAB.

The embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, the program being executed by the processor to implement the steps of the service bearer configuration method according to any one of the preceding claims.

DRAWINGS

FIG. 1 is a flowchart of applying a service bearer configuration method to a first CU according to an embodiment of the present disclosure;

2 is a flowchart of establishing a service bearer in a service bearer configuration method according to an embodiment of the present disclosure;

FIG. 3 is a flowchart of a service bearer update in a service bearer configuration method according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a service bearer configuration apparatus according to an embodiment of the present disclosure;

FIG. 5 is another schematic structural diagram of a service bearer configuration apparatus according to an embodiment of the present disclosure;

FIG. 6 is a flowchart of applying a service bearer configuration method to a second CU according to an embodiment of the present disclosure;

FIG. 7 is another schematic structural diagram of a service bearer configuration apparatus according to an embodiment of the present disclosure;

FIG. 8 is another schematic structural diagram of a service bearer configuration apparatus according to an embodiment of the present disclosure.

detailed description

In order to make the technical solutions and features of the present disclosure more clear, the following detailed description will be made in conjunction with the accompanying drawings and specific embodiments.

In some embodiments of the present disclosure, as shown in FIG. 1, a service bearer configuration method is provided, which is applied to a first centralized unit CU, and includes:

Step 11: Configure a mapping relationship between the flow and the data radio bearer DRB.

Here, the first centralized unit (CU) that provides the service for the terminal UE configures a mapping relationship between the stream and the data radio bearer (DRB).

Step 12: Send the mapping relationship to a second CU; the first CU is a CU serving a terminal, and the second CU is a CU serving an integrated access backhaul relay node IAB.

Here, the first CU sends the mapping relationship between the stream and the data radio bearer DRB to the second CU that provides services for the Integrated Access and Backhaul (IAB).

The service bearer configuration method of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, which ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

Optionally, the foregoing step 11 includes:

Step 111: Establish a mapping relationship between the flow and the DRB according to the received protocol data unit PDU session establishment message.

The protocol data unit (PDU) session establishment message includes newly established flow flow information. For example, the newly created flow1, flow2, and flow3.

Here, the first CU that provides the service for the terminal UE receives the PDU session setup message sent from the AMF, establishes a mapping relationship between the flow and the DRB for the UE according to the PDU session setup message, and then transmits the mapping relationship to the IAB. The second CU that provides the service.

The first CU logical entity and the second CU logical entity may coexist on the same physical entity.

The second CU receives the mapping relationship between the flow and the DRB for the UE (referred to as the first mapping relationship), and establishes a mapping relationship between the flow and the DRB of the IAB node according to the first mapping relationship (referred to as the second mapping). relationship).

The second CU may establish, according to the first mapping relationship, a mapping relationship between the DRB (the DRB of the UE) for carrying the UE data and the DRB (the DRB of the IAB) for carrying the IAB data, which is recorded as a third mapping relationship, Then, according to the third mapping relationship and the first mapping relationship, a mapping relationship between the flow and the DRB for the IAB node is established.

When the second CU establishes the third mapping relationship, the DRB of the new IAB mapped with the DRB of the UE may be established according to the first mapping relationship, or the DRB of the UE may be mapped to the DRB of the established IAB. The principle that the second CU establishes the third mapping relationship and the second mapping relationship may be that the DRB of the UE is the minimum configuration unit (that is, the relationship between the DRB for the IAB and the DRB of the UE is one-to-many); The QOS priority level of the DRB is used as a configuration reference, but the QOS priority level of the flow of the UE is not excluded as a configuration reference.

The second CU may notify the UPF for the IAB of the mapping relationship between the flow and the DRB for the IAB node, thereby enabling it to correctly process the service data packet from the first CU logical entity. Specifically, the UPF for the IAB is for the data packet from the specific data source, such as the data packet from the first CU logical entity, the IP packet to flow mapping process will not be performed, and only the data packet is transparently transmitted to the second CU logical entity. .

Optionally, after step 111, the method further includes:

Step 112: Update the mapping relationship between the flow and the DRB according to the received PDU session modification message.

The PDU session modification message includes updated flow flow information. For example, add a new flow4, or delete an existing flow2.

Here, the first CU receives the PDU session modification message sent from the AMF, updates the mapping relationship between the flow and the DRB for the UE according to the PDU session modification message, and then transmits the updated mapping relationship to the second service serving the IAB. CU.

The second CU receives the updated mapping relationship between the flow and the DRB for the UE (referred to as the first mapping relationship), and can update the mapping relationship between the flow and the DRB for the IAB node according to the first mapping relationship (denoted as Second mapping relationship).

The second CU may update a mapping relationship between the DRB (the DRB of the UE) for carrying the UE data and the DRB (the DRB of the IAB) for carrying the IAB data according to the first mapping relationship (referred to as a third mapping relationship), and And updating the mapping relationship between the flow and the DRB for the IAB node according to the third mapping relationship and the first mapping relationship.

The principle that the second CU updates the third mapping relationship and the second mapping relationship may be that the DRB of the UE is the minimum configuration unit (ie, the relationship between the DRB for the IAB and the DRB of the UE is one-to-many); The QOS priority level of the DRB is used as a configuration reference, but the QOS priority level of the flow of the UE is not excluded as a configuration reference.

The second CU may notify the UPF of the updated IAB node's flow and the DRB to the UPB of the IAB so that it can correctly process the service data packet from the first CU logical entity. Specifically, the UPF for the IAB is for the data packet from the specific data source, such as the data packet from the first CU logical entity, the IP packet to flow mapping process will not be performed, and only the data packet is transparently transmitted to the second CU logical entity. .

Optionally, the foregoing step 11 includes:

Step 113: Configure a mapping relationship between the flow and the DRB according to at least one of a priority level of the quality of service QOS of the DRB and a priority level of the QOS of the flow.

In this case, when the first CU configures the mapping relationship between the flow flow and the DRB of the UE, the priority level of the QOS of the DRB of the UE may be used as a configuration reference, or the priority level of the QOS of the flow of the UE may be used as a configuration reference.

Optionally, after step 11 above, the method further includes:

Step 13: The mapping relationship is transmitted to the first distributed unit DU through a terminal context, where the first DU is a DU that provides services for the terminal.

At this time, the first CU may transmit the mapping relationship between the flow and the DRB for the UE to the first distributed unit (DU) serving the UE through the UE context.

Optionally, after step 11 above, the method further includes:

Step 14: Generate a radio resource control RRC reconfiguration message according to the mapping relationship.

Step 15: The RRC reconfiguration message is transmitted to the terminal by using the first DU, where the first DU is a DU that provides services for the terminal.

At this time, the first CU may generate an RRC reconfiguration message according to the mapping relationship between the flow and the DRB for the UE, and transparently transmit the RRC reconfiguration message to the first through the F1 Application Protocol (F1 Application Protocol, F1 AP) process. The DU further transmits an RRC reconfiguration message to the terminal by the first DU, and the terminal may perform a DRB setup/update operation according to the received configuration parameters.

Optionally, the first CU may transparently transmit the RRC reconfiguration message to the first DU by using the dedicated signaling of the F1 AP process, or transparently transmit the RRC reconfiguration message to the first DU by using the UE context of the F1 AP process, but Not limited to this.

Specifically, after the first CU establishes a mapping relationship between the flow and the DRB of the UE, the UE may initiate a UE context establishment process to the first DU, and establish a mapping relationship between the flow and the DRB for the UE through the UE context. The process is transmitted to the first DU. On the other hand, the RRC reconfiguration message is generated according to the mapping relationship between the flow and the DRB for the UE, and the RRC reconfiguration message is transparently transmitted to the first DU through the F1 AP process. The RRC reconfiguration message may be sent to the UE, and the UE may perform a DRB setup operation according to the received configuration parameters.

After the first CU updates the mapping relationship between the flow and the DRB of the UE, on the one hand, the UE context modification process to the first DU may be triggered, and the mapping relationship between the flow and the DRB for the UE is transmitted to the UE context modification process. The first DU may be configured to generate an RRC reconfiguration message according to the mapping relationship between the flow and the DRB for the UE, and transparently transmit the RRC reconfiguration message to the first DU through the F1 AP process, where the first DU may be the RRC. The reconfiguration message is sent to the UE, and the UE may perform a DRB update operation according to the received configuration parameters.

In the embodiment of the present disclosure, the second CU receives the mapping relationship between the flow and the DRB for the UE (referred to as the first mapping relationship), and may configure (establish or update) the flow and the DRB for the IAB node according to the first mapping relationship. The mapping relationship between them (recorded as the second mapping relationship). The second CU may transmit the second mapping relationship to the second DU through the UE context modification process of F1, where the second DU is a DU serving the IAB; and the second CU may be according to the second mapping relationship and the DRB of the IAB and the UE. The mapping relationship between the DRBs (the third mapping relationship) generates an RRC reconfiguration message and transparently transmits the RRC reconfiguration message to the second DU through the F1 AP process. The second DU may send the RRC reconfiguration message to the MT part on the IAB node, and the MT may perform the mapping relationship between the data bearer and the flow between the IAB and the UE according to the received configuration parameter.

Optionally, the second CU may transparently transmit the RRC reconfiguration message to the second DU by using dedicated signaling of the F1 AP process, or transparently transmit the RRC reconfiguration message to the second DU by using the UE context of the F1 AP process, but Not limited to this.

An application flow of the service bearer establishment in the service bearer configuration method of the embodiment of the present disclosure is exemplified as follows.

As shown in FIG. 2, the service bearer configuration method in the embodiment of the present disclosure includes:

Step 21: The first CU logical entity receives a PDU session establishment message from the first AMF. The first AMF is an AMF that provides services to the terminal UE. The PDU session establishment message includes newly established flow information, such as flow 1, flow 2, and flow 3, and QOS priority level parameters of the corresponding flow.

Step 22: The UPF/SMF logical entity sends a GPRS Tunneling Protocol for Control Plane (GTP-C) session update request message to the second AMF. The second AMF is the AMF that serves the IAB.

Step 23: The second AMF triggers a PDU session update process to the second CU logical entity, where the newly established flow information is carried.

The UPF/SMF logical entity and the second CU may coexist on the same physical entity.

Step 24: The second AMF sends a GTP-C session update response message to the UPF/SMF logical entity.

Step 25: Establish a mapping relationship between the data bearer and the flow between the IAB and the UE in the Donor CU of the host node, including:

The first CU logical entity establishes a mapping relationship between the flow and the DRB of the UE according to the received PDU session establishment message (referred to as a first mapping relationship). For example, the first CU logical entity establishes that the DRB1 of the UE is mapped to flow 1/2, and the DRB2 of the UE is mapped to flow 3. The first CU logical entity transmits the first mapping relationship to the second CU logical entity.

The second CU logical entity establishes a mapping relationship between the flow and the DRB of the IAB node according to the first mapping relationship (referred to as a second mapping relationship). The second CU logical entity may establish a mapping relationship between the DRB of the UE and the DRB of the IAB (referred to as a third mapping relationship), and then establish a flow between the flow and the DRB for the IAB node according to the third mapping relationship and the first mapping relationship. Mapping relationship.

For example, the second CU logical entity establishes a new DRBx (IAB) for the UE's DRB1 (mapped to flow 1/2); the second CU logical entity adds to the established DRBy (IAB) for the UE's DRB2 (mapped to flow 3) on. The principle that the second CU logical entity establishes the third mapping relationship and the second mapping relationship is that the DRB of the UE is the minimum configuration unit (ie, the relationship between the DRB for the IAB and the DRB of the UE is one-to-many); The QOS priority level of the DRB is used as a configuration reference, but the QOS priority level of the UE's flow is not excluded as a configuration reference.

The second CU logical entity notifies the UPF for the IAB for the mapping relationship between the flow of the IAB node and the DRB, thereby enabling it to correctly process the service data packets from the first CU logical entity. Specifically, the UPF for the IAB is for the data packet from the specific data source, such as the data packet from the first CU logical entity, the IP packet to flow mapping process will not be performed, and only the data packet is transparently transmitted to the second CU logical entity. .

Step 261: The first CU logical entity triggers a UE context establishment process to the first DU logical entity according to the flow-to-DRB mapping relationship for the UE, and transmits the flow-to-DRB mapping relationship for the UE to the first through the UE context establishment process. A DU logical entity.

The first DU is a DU that provides services to the terminal. Here the first DU is the DU on the IAB node.

Step 262: On the other hand, the first CU logical entity generates an RRC reconfiguration message according to the flow-to-DRB mapping relationship for the UE, and transparently transmits the RRC reconfiguration message to the first DU logical entity through the F1 AP procedure.

Step 27: The first DU logical entity sends an RRC reconfiguration message to the UE, and the UE performs a DRB establishment operation according to the configuration parameter included in the received RRC reconfiguration message.

Step 281: The second CU logical entity notifies the mapping relationship between the flow and the DRB of the IAB node to the second DU logical entity through the UE context modification process of the F1 AP.

Step 282: At the same time, the second CU logical entity generates an RRC reconfiguration message according to the mapping relationship between the flow and the DRB for the IAB node and the mapping between the DRB of the IAB and the UE DRB, and the RRC reconfiguration message is performed by the F1 AP procedure. Transparently transmitted to the second DU logical entity.

The second DU is the DU that serves the IAB. Here the second DU is Donor DU.

Step 29: The second DU logical entity sends an RRC reconfiguration message to the MT part of the IAB node, and the MT performs an operation of establishing a mapping relationship between the data bearer and the flow between the IAB and the UE according to the received configuration parameter.

The foregoing application process of the embodiment of the present disclosure provides a method for establishing a service bearer in an L2 relay architecture, which ensures that a 5G terminal can establish a complete data service channel when accessing a wireless station, and the entire L2 relay architecture can be more completely satisfied. Multi-path multi-hop service transmission requirements.

An application flow of the service bearer update in the service bearer configuration method of the embodiment of the present disclosure is exemplified as follows.

As shown in FIG. 3, the service bearer configuration method in the embodiment of the present disclosure includes:

Step 31: The first CU logical entity receives a PDU session modification message from the first AMF. The first AMF is an AMF that provides services to the terminal UE. The PDU session modification message includes updated flow information, such as adding a new flow4, or deleting an existing flow2.

Step 32: The UPF/SMF logical entity sends a GTP-C session update request message to the second AMF. The second AMF is the AMF that serves the IAB.

Step 33: The second AMF triggers a PDU session update process to the second CU logical entity, where the updated flow information is carried.

The UPF/SMF logical entity and the second CU may coexist on the same physical entity.

Step 34: The second AMF sends a GTP-C session update response message to the UPF/SMF logical entity.

Step 35: Update the mapping relationship between the data bearer and the flow between the IAB and the UE in the Donor CU of the host node, including:

The first CU logical entity updates the mapping relationship between the flow and the DRB for the UE according to the received PDU session modification message (referred to as a first mapping relationship). For example, the first CU logical entity deletes the flow2 of the DRB1 mapping of the UE, and the DRB3 of the newly created UE is mapped to the flow4. The first CU logic entity transmits the updated first mapping relationship to the second CU logical entity.

The second CU logical entity updates the mapping relationship between the flow and the DRB for the IAB node according to the first mapping relationship (referred to as the second mapping relationship). The second CU logical entity may update the mapping relationship between the DRB of the UE and the DRB of the IAB (referred to as a third mapping relationship) according to the first mapping relationship, and update the mapping for the IAB node according to the third mapping relationship and the first mapping relationship. The mapping between flow and DRB.

For example, the second CU logical entity deletes flow2 for the DRB1 mapped DRBx (IAB) of the UE; the second CU logical entity establishes a new DRBz (IAB) for the UE's DRB3. The principle that the second CU logical entity updates the third mapping relationship and the second mapping relationship is that the DRB of the UE is the minimum configuration unit (that is, the relationship between the DRB for the IAB and the DRB of the UE is a one-to-many relationship); The QOS priority level of the DRB is used as a configuration reference, but the QOS priority level of the UE's flow is not excluded as a configuration reference.

The second CU logical entity notifies the UPF for the IAB for the mapping relationship between the flow of the IAB node and the DRB, thereby enabling it to correctly process the service data packets from the first CU logical entity. Specifically, the UPF for the IAB is for the data packet from the specific data source, such as the data packet from the first CU logical entity, the IP packet to flow mapping process will not be performed, and only the data packet is transparently transmitted to the second CU logical entity. .

Step 361: The first CU logical entity, according to the updated flow-to-DRB mapping relationship for the UE, triggers a UE context modification process to the first DU logical entity, and transmits a flow-to-DRB mapping relationship for the UE to the first DU logic. entity.

The first DU is a DU that provides services to the terminal. Here the first DU is the DU on the IAB node.

Step 362: On the other hand, the first CU logical entity generates an RRC reconfiguration message according to the updated flow-to-DRB mapping relationship for the UE, and transparently transmits the RRC reconfiguration message to the first DU logical entity through the F1 AP.

Step 37: The first DU logical entity sends an RRC reconfiguration message to the UE, and the UE performs a DRB update operation according to the configuration parameter included in the received RRC reconfiguration message.

Step 381: The second CU logical entity notifies the updated mapping relationship between the flow and the DRB of the IAB node to the second DU logical entity by using the UE context modification process of the F1 AP.

Step 382: At the same time, the second CU logical entity generates an RRC reconfiguration message according to the updated mapping relationship between the flow and the DRB of the IAB node and the mapping between the DRB of the IAB and the UE DRB, and the RRC is heavily processed by the F1 AP process. The configuration message is transparently transmitted to the second DU logical entity.

The second DU is the DU that serves the IAB. Here the second DU is Donor DU.

Step 39: The second DU logical entity sends an RRC reconfiguration message to the MT part of the IAB node, and the MT performs an operation of updating the mapping relationship between the data bearer and the flow between the IAB and the UE according to the received configuration parameter.

The application flow of the embodiment of the present disclosure provides a service bearer update method in the L2 relay architecture, which ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and the entire L2 relay architecture can be more completely satisfied. Multi-path multi-hop service transmission requirements.

The service bearer configuration method of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, which ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

In some embodiments of the present disclosure, as shown in FIG. 4, a service bearer configuration apparatus is further provided, including:

The first configuration module 41 is configured to configure a mapping relationship between the stream and the data radio bearer DRB.

The first sending module 42 is configured to send the mapping relationship to the second CU; the first CU is a CU serving the terminal, and the second CU is a CU serving the integrated access backhaul relay node IAB .

The service bearer configuration device of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, and ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

Optionally, the first configuration module 41 includes:

The first configuration submodule is configured to establish a mapping relationship between the flow and the DRB according to the received protocol data unit PDU session establishment message.

Optionally, it also includes:

And an update module, configured to update a mapping relationship between the flow and the DRB according to the received PDU session modification message.

Optionally, the first configuration module 41 includes:

The second configuration submodule is configured to configure a mapping relationship between the flow and the DRB according to at least one of a priority level of the quality of service QOS of the DRB and a priority level of the QOS of the flow.

Optionally, it also includes:

The first transmitting module is configured to transmit the mapping relationship to the first distributed unit DU by using a terminal context, where the first DU is a DU that provides services for the terminal.

Optionally, it also includes:

a first generating module, configured to generate a radio resource control RRC reconfiguration message according to the mapping relationship;

And a second transmitting module, configured to send the RRC reconfiguration message to the terminal by using the first DU, where the first DU is a DU that provides service for the terminal.

The service bearer configuration device of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, and ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

It should be noted that all the implementation manners in the foregoing embodiment of the service bearer configuration method are applicable to the embodiment of the service bearer configuration apparatus, and the same technical effect can be achieved.

In some embodiments of the present disclosure, as shown in FIG. 5, a service bearer configuration apparatus is further provided, including a transceiver 510, a memory 520, a processor 500, a bus interface, and is stored on the memory 520 and a computer program running on the processor 500;

The processor 500 is configured to read a program in the memory, and perform the following process: configuring a mapping relationship between the stream and the data radio bearer DRB;

The transceiver 510 is configured to: send the mapping relationship to a second CU; the first CU is a CU that provides services for the terminal, and the second CU is a CU that provides services for the integrated access backhaul relay node IAB .

The service bearer configuration device of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, and ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

In FIG. 5, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 510 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.

Optionally, the processor 500 is further configured to: establish a mapping relationship between the flow and the DRB according to the received protocol data unit PDU session establishment message.

Optionally, the processor 500 is further configured to: update the mapping relationship between the flow and the DRB according to the received PDU session modification message.

Optionally, the processor 500 is further configured to: configure a mapping relationship between the flow and the DRB according to at least one of a priority level of the quality of service QOS of the DRB and a priority level of the QOS of the flow.

Optionally, the transceiver 510 is further configured to: send the mapping relationship to the first distributed unit DU by using a terminal context, where the first DU is a DU that provides services for the terminal.

Optionally, the processor 500 is further configured to: generate a radio resource control RRC reconfiguration message according to the mapping relationship; the transceiver 510 is further configured to: send the RRC reconfiguration message to the first DU by using the first DU The terminal, the first DU is a DU that provides services for the terminal.

In some embodiments of the present disclosure, there is also provided a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following steps:

Configuring a mapping relationship between the flow and the data radio bearer DRB;

Transmitting the mapping relationship to a second CU; the first CU is a CU serving a terminal, and the second CU is a CU serving an integrated access backhaul relay node IAB.

Optionally, when the program is executed by the processor, the following steps are further implemented: establishing a mapping relationship between the flow and the DRB according to the received protocol data unit PDU session establishment message.

Optionally, when the program is executed by the processor, the following steps are further implemented: updating the mapping relationship between the flow and the DRB according to the received PDU session modification message.

Optionally, when the program is executed by the processor, the following step is further performed: configuring a mapping relationship between the flow and the DRB according to at least one of a priority level of the quality of service of the DRB and a priority level of the QOS of the flow.

Optionally, when the program is executed by the processor, the following step is further implemented: the mapping relationship is transmitted to the first distributed unit DU by using a terminal context, where the first DU is a DU that provides services for the terminal.

Optionally, when the program is executed by the processor, the following steps are further performed: generating a radio resource control RRC reconfiguration message according to the mapping relationship; and transmitting the RRC reconfiguration message to the terminal by using the first DU, where the first The DU is a DU that provides services to the terminal.

In some embodiments of the present disclosure, as shown in FIG. 6, a service bearer configuration method is provided, which is applied to a second centralized unit CU, and includes:

Step 61: Receive a first mapping relationship between the stream sent by the first CU and the data radio bearer DRB. The first CU is a CU that provides services for the terminal, and the second CU is an integrated access backhaul relay. The node IAB provides the CU of the service.

Here, the first CU configures a first mapping relationship between the flow of the terminal UE and the DRB, and then sends the first mapping relationship to the second CU, where the second CU receives the first mapping relationship to configure the flow and the IAB. Mapping relationship between DRBs.

Step 62: Configure a second mapping relationship between the flow and the DRB according to the first mapping relationship. The first mapping relationship is a mapping relationship between a flow and a DRB for carrying terminal data, where the second mapping is The relationship is a mapping relationship between a flow and a DRB for carrying IAB data.

Here, the second CU configures a second mapping relationship between the flow for the IAB and the DRB according to the first mapping relationship between the flow and the DRB for the terminal UE.

The service bearer configuration method of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, which ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

Optionally, the foregoing step 62 includes:

Step 621: Configure a third mapping relationship between the DRB for carrying the terminal data and the DRB for carrying the IAB data according to the first mapping relationship.

Step 622: Configure a second mapping relationship between the flow and the DRB according to the third mapping relationship and the first mapping relationship.

At this time, the second CU may configure a third mapping relationship between the DRB (the DRB of the UE) for carrying the UE data and the DRB (the DRB of the IAB) for carrying the IAB data according to the first mapping relationship, and then according to the third mapping relationship. The third mapping relationship is the first mapping relationship, and the second mapping relationship between the flow and the DRB of the IAB node is configured.

Specifically, the second CU receives the first mapping relationship between the flow of the UE and the DRB established by the first CU, and may establish a mapping relationship between the DRB of the UE and the DRB of the IAB according to the first mapping relationship, and then according to the mapping relationship between the DRB of the UE and the IRB. The first mapping relationship and the mapping relationship between the DRB of the UE and the DRB of the IAB establish a second mapping relationship between the flow and the DRB for the IAB node.

The second CU receives the first mapping relationship between the flow of the UE and the DRB that is updated by the first CU, and may update the mapping relationship between the DRB of the UE and the DRB of the IAB according to the first mapping relationship, and according to the first mapping The relationship between the DRB of the UE and the DRB of the IAB is updated, and the second mapping relationship between the flow and the DRB of the IAB node is updated.

Optionally, the foregoing step 621 includes:

Step 6211: Configure, according to the first mapping relationship, a DRB for carrying terminal data and a DRB for carrying IAB data according to at least one of a priority level of the quality of service QOS of the DRB and a priority level of the QOS of the stream. The third mapping relationship between.

In this case, when the second CU configures the mapping between the DRB of the UE and the DRB of the IAB, the priority of the QOS of the DRB of the UE may be used as a configuration reference, or the priority of the QOS of the flow of the UE may be used as a configuration reference.

Optionally, the foregoing step 621 includes:

Step 6212: According to the first mapping relationship, establish a DRB for carrying IAB data for carrying DRB mapping of terminal data, or map a DRB for carrying terminal data to an already established bearer for carrying IAB data. In the DRB.

At this time, when the second CU configures the mapping relationship between the DRB of the UE and the DRB of the IAB, the DRB of the new IAB mapped with the DRB of the UE may be established according to the first mapping relationship, or the DRB of the UE may be mapped to have been established. The IAB of the DRB.

In the embodiment of the present disclosure, the principle that the second CU configures the third mapping relationship and the second mapping relationship may be that the DRB of the UE is the minimum configuration unit (that is, the one-to-many relationship between the DRB for the IAB and the DRB of the UE) Secondly, the QOS priority level of the DRB of the UE is used as a configuration reference, but the QOS priority level of the flow of the UE is not excluded as a configuration reference.

Optionally, after step 62, the method further includes:

Step 63: Transfer the second mapping relationship to a user plane function UPF that provides services for the IAB.

At this time, after the second CU establishes or updates the second mapping relationship between the flow and the DRB for the IAB node, the second mapping relationship may be notified to the UPF for the IAB, so that it can correctly process the logical entity from the first CU. Business data package.

Specifically, the UPF for the IAB is for the data packet from the specific data source, such as the data packet from the first CU logical entity, the IP packet to flow mapping process will not be performed, and only the data packet is transparently transmitted to the second CU logical entity. .

Optionally, after step 62, the method further includes:

Step 64: The second mapping relationship is transmitted to the second distributed unit DU by using a terminal context, where the second DU is a DU that provides services for the IAB.

At this time, the second CU may transmit the second mapping relationship between the flow for the IAB and the DRB through the UE context to the second DU serving the IAB.

Optionally, after step 62, the method further includes:

Step 65: Generate a radio resource control RRC reconfiguration message according to the second mapping relationship and the third mapping relationship.

Step 66: The RRC reconfiguration message is transmitted to the mobile terminal MT on the IAB node by using the second DU, where the second DU is a DU serving the IAB.

At this time, the second CU may generate an RRC reconfiguration message according to the second mapping relationship and the mapping relationship between the DRB of the IAB and the DRB of the UE (the third mapping relationship), and transparently transmit the RRC reconfiguration message to the F1 AP process. And the second DU, the RRC reconfiguration message is sent by the second DU to the MT on the IAB node, and the MT may perform the mapping operation between the data bearer and the flow between the IAB and the UE according to the received configuration parameter.

Optionally, the second CU may transparently transmit the RRC reconfiguration message to the second DU by using dedicated signaling of the F1 AP process, or transparently transmit the RRC reconfiguration message to the second DU by using the UE context of the F1 AP process, but Not limited to this.

In the embodiment of the present disclosure, the second CU receives the first mapping relationship between the flow and the DRB for the UE, and may configure (establish or update) the second mapping between the flow and the DRB for the IAB node according to the first mapping relationship. relationship. The second CU may transmit the second mapping relationship to the second DU through the UE context modification process of F1, where the second DU is a DU serving the IAB; and the second CU may be according to the second mapping relationship and the DRB of the IAB and the UE. The mapping relationship between the DRBs (the third mapping relationship) generates an RRC reconfiguration message and transparently transmits the RRC reconfiguration message to the second DU through the F1 AP process. The second DU may send the RRC reconfiguration message to the MT part on the IAB node, and the MT may perform the mapping relationship between the data bearer and the flow between the IAB and the UE according to the received configuration parameter.

The service bearer configuration method of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, which ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

In some embodiments of the present disclosure, as shown in FIG. 7, a service bearer configuration apparatus is further provided, including:

The first receiving module 71 is configured to receive a first mapping relationship between the stream sent by the first CU and the data radio bearer DRB; the first CU is a CU serving the terminal, and the second CU is an integrated access The backhaul relay node IAB provides the service CU;

The second configuration module 72 is configured to configure a second mapping relationship between the flow and the DRB according to the first mapping relationship, where the first mapping relationship is a mapping relationship between the flow and the DRB for carrying the terminal data. The second mapping relationship is a mapping relationship between a flow and a DRB for carrying IAB data.

The service bearer configuration device of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, and ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

Optionally, the second configuration module 72 includes:

a third configuration sub-module, configured to configure, according to the first mapping relationship, a third mapping relationship between a DRB for carrying terminal data and a DRB for carrying IAB data;

And a fourth configuration submodule, configured to configure a second mapping relationship between the flow and the DRB according to the third mapping relationship and the first mapping relationship.

Optionally, the third configuration submodule includes:

a first configuration unit, configured to configure, according to the first mapping relationship, the DRB for carrying the terminal data and the bearer according to at least one of a priority level of the quality of service QOS of the DRB and a priority level of the QOS of the flow The third mapping relationship between the DRBs of the IAB data.

Optionally, the third configuration submodule includes:

a second configuration unit, configured to establish, according to the first mapping relationship, a DRB for carrying IAB data with a DRB mapping for carrying terminal data, or mapping a DRB for carrying terminal data to an established In the DRB that carries the IAB data.

Optionally, it also includes:

And a third transmitting module, configured to transmit the second mapping relationship to a user plane function UPF that provides a service for the IAB.

Optionally, it also includes:

And a fourth transmitting module, configured to transmit the second mapping relationship to the second distributed unit DU by using a terminal context, where the second DU is a DU serving the IAB.

Optionally, it also includes:

a second generating module, configured to generate a radio resource control RRC reconfiguration message according to the second mapping relationship and the third mapping relationship;

And a fifth transmitting module, configured to send the RRC reconfiguration message to the mobile terminal MT on the IAB node by using the second DU, where the second DU is a DU serving the IAB.

The service bearer configuration device of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, and ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

It should be noted that all the implementation manners in the foregoing embodiment of the service bearer configuration method are applicable to the embodiment of the service bearer configuration apparatus, and the same technical effect can be achieved.

In some embodiments of the present disclosure, as shown in FIG. 8, a service bearer configuration apparatus is further provided, including a transceiver 810, a memory 820, a processor 800, a bus interface, and is stored on the memory 820 and a computer program running on the processor 800;

The transceiver 810 is configured to: receive a first mapping relationship between a stream sent by the first CU and a data radio bearer DRB; the first CU is a CU serving a terminal, and the second CU is an integrated access The backhaul relay node IAB provides the service CU;

The processor 800 is configured to read a program in the memory, and perform the following process: configuring a second mapping relationship between the flow and the DRB according to the first mapping relationship; the first mapping relationship is a flow and is used for carrying A mapping relationship between DRBs of terminal data, where the second mapping relationship is a mapping relationship between a stream and a DRB for carrying IAB data.

The service bearer configuration device of the embodiment of the present disclosure implements the service bearer configuration of the L2 relay, and ensures that the 5G terminal can establish a complete data service channel when accessing the wireless station, and enables the entire L2 relay architecture to more fully satisfy the multipath. Multi-hop service transmission requirements, thereby improving the user's business experience and improving network transmission efficiency.

Wherein, in FIG. 8, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 800 and various circuits of memory represented by memory 820. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 810 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 800 in performing operations.

Optionally, the processor 800 is further configured to: configure, according to the first mapping relationship, a third mapping relationship between a DRB for carrying terminal data and a DRB for carrying IAB data; The mapping relationship and the first mapping relationship configure a second mapping relationship between the flow and the DRB.

Optionally, the processor 800 is further configured to: according to the first mapping relationship, configure the data for carrying the terminal according to at least one of a priority level of the quality of service QOS of the DRB and a priority level of the QOS of the stream. The third mapping relationship between the DRB and the DRB used to carry the IAB data.

Optionally, the processor 800 is further configured to: according to the first mapping relationship, establish a DRB for carrying IOB data for carrying DRB mapping of terminal data, or map DRB for carrying terminal data. Go to the DRB that has been established to carry IAB data.

Optionally, the transceiver 810 is further configured to: send the second mapping relationship to a user plane function UPF that provides services for the IAB.

Optionally, the transceiver 810 is further configured to: send the second mapping relationship to the second distributed unit DU by using a terminal context, where the second DU is a DU that provides service for the IAB.

Optionally, the processor 800 is further configured to: generate a radio resource control RRC reconfiguration message according to the second mapping relationship and the third mapping relationship; the transceiver 810 is further configured to: use the RRC The reconfiguration message is transmitted by the second DU to the mobile terminal MT on the IAB node, which is the DU serving the IAB.

In some embodiments of the present disclosure, there is also provided a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following steps:

Receiving a first mapping relationship between the stream sent by the first CU and the data radio bearer DRB; the first CU is a CU serving the terminal, and the second CU is provided for the integrated access backhaul relay node IAB Service CU;

Determining, according to the first mapping relationship, a second mapping relationship between the flow and the DRB; the first mapping relationship is a mapping relationship between the flow and a DRB for carrying terminal data, where the second mapping relationship is a flow A mapping relationship with a DRB for carrying IAB data.

Optionally, when the program is executed by the processor, the following steps are further performed: configuring, according to the first mapping relationship, a third mapping relationship between a DRB for carrying terminal data and a DRB for carrying IAB data; The third mapping relationship and the first mapping relationship are configured to configure a second mapping relationship between the flow and the DRB.

Optionally, when the program is executed by the processor, the following steps are further implemented: configured according to the first mapping relationship, and configured according to at least one of a priority level of a quality of service QOS of the DRB and a priority level of a QOS of the stream, configured to be used for: A third mapping relationship between the DRB carrying the terminal data and the DRB for carrying the IAB data.

Optionally, when the program is executed by the processor, the following steps are further implemented: establishing, according to the first mapping relationship, a DRB for carrying IAB data for carrying DRB mapping of terminal data, or for carrying terminal data The DRB is mapped to the already established DRB for carrying IAB data.

Optionally, when the program is executed by the processor, the following step is further implemented: transmitting the second mapping relationship to a user plane function UPF serving the IAB.

Optionally, when the program is executed by the processor, the following step is further implemented: transmitting the second mapping relationship to the second distributed unit DU by using a terminal context, where the second DU is a DU serving the IAB.

Optionally, when the program is executed by the processor, the following steps are further performed: generating a radio resource control RRC reconfiguration message according to the second mapping relationship and the third mapping relationship; and adopting the RRC reconfiguration message by using a second The DU is transmitted to the mobile terminal MT on the IAB node, which is the DU serving the IAB.

In various embodiments of the present disclosure, it should be understood that the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present disclosure. The implementation process constitutes any limitation.

The above is an alternative embodiment of the present disclosure, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present disclosure. Retouching should also be considered as the scope of protection of this disclosure.

Claims (30)

A service bearer configuration method is applied to a first centralized unit CU, including: Configuring a mapping relationship between the flow and the data radio bearer DRB; Transmitting the mapping relationship to a second CU; the first CU is a CU serving a terminal, and the second CU is a CU serving an integrated access backhaul relay node IAB. The method of claim 1, wherein the step of configuring the mapping relationship between the data flow and the data radio bearer DRB comprises: And establishing a mapping relationship between the flow and the DRB according to the received protocol data unit PDU session establishment message. The method according to claim 2, further comprising: after the establishing a mapping relationship between the flow and the DRB, The mapping relationship between the flow and the DRB is updated according to the received PDU session modification message. The method of claim 1, wherein the step of configuring the mapping relationship between the data flow and the data radio bearer DRB comprises: The mapping relationship between the flow and the DRB is configured according to at least one of the priority level of the quality of service QOS of the DRB and the priority level of the QOS of the flow. The method according to claim 1, further comprising: after the mapping relationship between the configuration flow and the data radio bearer DRB, And transmitting the mapping relationship to the first distributed unit DU by using a terminal context, where the first DU is a DU that provides services for the terminal. The method according to claim 1, further comprising: after the mapping relationship between the configuration flow and the data radio bearer DRB, Generating a radio resource control RRC reconfiguration message according to the mapping relationship; And transmitting the RRC reconfiguration message to the terminal by using the first DU, where the first DU is a DU that provides services for the terminal. A service bearer configuration device includes: a first configuration module, configured to configure a mapping relationship between the flow and the data radio bearer DRB; And a first sending module, configured to send the mapping relationship to the second CU; the first CU is a CU serving the terminal, and the second CU is a CU serving the integrated access backhaul relay node IAB. A service bearer configuration device includes a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor; The processor is configured to read a program in the memory, and perform the following process: configuring a mapping relationship between the stream and the data radio bearer DRB; The transceiver is configured to: send the mapping relationship to a second CU; the first CU is a CU that provides services for the terminal, and the second CU is a CU that provides services for the integrated access backhaul relay node IAB. The apparatus according to claim 8, wherein the processor is further configured to: establish a mapping relationship between the stream and the DRB according to the received protocol data unit PDU session establishment message. The apparatus according to claim 9, wherein the processor is further configured to: update a mapping relationship between the stream and the DRB according to the received PDU session modification message. The apparatus according to claim 8, wherein the processor is further configured to: configure a mapping relationship between the flow and the DRB according to at least one of a priority level of the quality of service QOS of the DRB and a priority level of the QOS of the flow. . The apparatus according to claim 8, wherein the transceiver is further configured to: transmit the mapping relationship to the first distributed unit DU through a terminal context, where the first DU is a DU that provides service for the terminal. The apparatus according to claim 12, wherein the processor is further configured to: generate a radio resource control RRC reconfiguration message according to the mapping relationship; the transceiver is further configured to: pass the RRC reconfiguration message The first DU is transmitted to the terminal, and the first DU is a DU that provides service to the terminal. A computer readable storage medium having stored thereon a computer program, wherein the program is executed by a processor, the steps of the service bearer configuration method according to any one of claims 1 to 6. A service bearer configuration method is applied to a second centralized unit CU, including: Receiving a first mapping relationship between the stream sent by the first CU and the data radio bearer DRB; the first CU is a CU serving the terminal, and the second CU is provided for the integrated access backhaul relay node IAB Service CU; Determining, according to the first mapping relationship, a second mapping relationship between the flow and the DRB; the first mapping relationship is a mapping relationship between the flow and a DRB for carrying terminal data, where the second mapping relationship is a flow A mapping relationship with a DRB for carrying IAB data. The method of claim 15, wherein the step of configuring the second mapping relationship between the flow and the DRB according to the first mapping relationship comprises: And configuring, according to the first mapping relationship, a third mapping relationship between a DRB for carrying terminal data and a DRB for carrying IAB data; And configuring a second mapping relationship between the flow and the DRB according to the third mapping relationship and the first mapping relationship. The method of claim 16, wherein the step of configuring a third mapping relationship between the DRB for carrying the terminal data and the DRB for carrying the IAB data according to the first mapping relationship comprises: And configuring, according to the first mapping relationship, between the DRB for carrying the terminal data and the DRB for carrying the IAB data, according to at least one of the priority level of the quality of service QOS of the DRB and the priority level of the QOS of the stream. The third mapping relationship. The method of claim 16, wherein the step of configuring a third mapping relationship between the DRB for carrying the terminal data and the DRB for carrying the IAB data according to the first mapping relationship comprises: And according to the first mapping relationship, establishing a DRB for carrying IAB data for carrying DRB mapping of terminal data, or mapping a DRB for carrying terminal data to an already established DRB for carrying IAB data. The method according to claim 15, further comprising: after the second mapping relationship between the configuration flow and the DRB, Transmitting the second mapping relationship to a user plane function UPF that provides services for the IAB. The method according to claim 15, further comprising: after the second mapping relationship between the configuration flow and the DRB, Transmitting the second mapping relationship to the second distributed unit DU by using a terminal context, where the second DU is a DU serving the IAB. The method of claim 16, further comprising: after configuring the second mapping relationship between the flow and the DRB, Generating a radio resource control RRC reconfiguration message according to the second mapping relationship and the third mapping relationship; And transmitting the RRC reconfiguration message to the mobile terminal MT on the IAB node by using the second DU, where the second DU is a DU serving the IAB. A service bearer configuration device includes: a first receiving module, configured to receive a first mapping relationship between the stream sent by the first CU and the data radio bearer DRB; the first CU is a CU serving the terminal, and the second CU is an integrated access backhaul The CU that the relay node IAB provides the service; a second configuration module, configured to configure a second mapping relationship between the flow and the DRB according to the first mapping relationship; the first mapping relationship is a mapping relationship between the flow and the DRB for carrying the terminal data, where The second mapping relationship is a mapping relationship between the flow and the DRB for carrying the IAB data. A service bearer configuration device includes a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor; The transceiver is configured to: receive a first mapping relationship between a stream sent by the first CU and a data radio bearer DRB; the first CU is a CU that provides services for the terminal, and the second CU is an integrated access backhaul The CU that the relay node IAB provides the service; The processor is configured to read a program in the memory, and perform the following process: configuring a second mapping relationship between the flow and the DRB according to the first mapping relationship; the first mapping relationship is a flow and is used to carry terminal data. Mapping relationship between DRBs, the second mapping relationship is a mapping relationship between a stream and a DRB for carrying IAB data. The apparatus according to claim 23, wherein the processor is further configured to: configure, according to the first mapping relationship, a third mapping relationship between a DRB for carrying terminal data and a DRB for carrying IAB data And configuring a second mapping relationship between the flow and the DRB according to the third mapping relationship and the first mapping relationship. The apparatus according to claim 24, wherein the processor is further configured to: according to the first mapping relationship, and according to at least one of a priority level of a quality of service QOS of the DRB and a priority level of a QOS of the stream, A third mapping relationship between the DRB for carrying the terminal data and the DRB for carrying the IAB data is configured. The apparatus according to claim 24, wherein the processor is further configured to: according to the first mapping relationship, establish a DRB for carrying IAB data with a DRB mapping for carrying terminal data, or The DRB carrying the terminal data is mapped to the already established DRB for carrying the IAB data. The apparatus of claim 23, wherein the transceiver is further configured to: communicate the second mapping relationship to a user plane function UPF that provides service to the IAB. The apparatus according to claim 23, wherein said transceiver is further configured to: transmit said second mapping relationship to a second distributed unit DU through a terminal context, said second DU serving a IAB DU. The apparatus according to claim 24, wherein the processor is further configured to: generate a radio resource control RRC reconfiguration message according to the second mapping relationship and the third mapping relationship; the transceiver is further configured to: Transmitting the RRC reconfiguration message to the mobile terminal MT on the IAB node through the second DU, the second DU being a DU serving the IAB. A computer readable storage medium having stored thereon a computer program, wherein the program is executed by a processor to implement the steps of the service bearer configuration method according to any one of claims 15-21.

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