WO2019192293A1 - Bearing management method for wireless backhaul node, wireless backhaul node and donor base station - Google Patents

Abstract

Provided by an embodiment of the present disclosure are a bearing management method for a wireless backhaul node, a wireless backhaul node and a donor base station, the method comprising: receiving configuration parameters sent by a donor base station, the configuration parameters comprising one or more pieces of configuration information; according to first configuration information in the configuration parameters, establishing a first bearing with the donor base station, and/or according to second configuration information in the configuration parameters, establishing a second bearing with the donor base station and/or another node.

Description

Bearer management method for wireless backhaul node, wireless backhaul node and donor base station

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 20110130188, filed on Jan. 4, s.

Technical field

The embodiments of the present disclosure relate to the field of communications technologies, and in particular, to a bearer management method for a wireless backhaul node, a wireless backhaul node, and a donor base station.

Background technique

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 the fifth-generation (fifth-generation, 5G) network, the number of access sites is greatly improved, but it is not guaranteed that all access sites have wired backhaul conditions, and the introduction of wireless access sites cannot be avoided. Faced with the higher transmission rate and transmission delay requirements of 5G, higher requirements are imposed on the wireless backhaul network.

In the related art, there is no bearer management method for a multi-hop multi-connection 5G wireless backhaul node. The version 10 (R10) relay (Relay) is a Layer 3 (L3) device and has a single-hop connection. Its bearer management method cannot be directly applied to the Layer 2 device (5G wireless backhaul node) path. Therefore, a new bearer setup is needed. Ways to meet the needs of providing users with a stable data transmission service.

Summary of the invention

An object of the embodiments of the present disclosure is to provide a bearer management method for a wireless backhaul node, a wireless backhaul node, and a donor base station, and solve the problem of path bearer management of the wireless backhaul node.

The first aspect provides a bearer management method for a wireless backhaul node, which is applied to a wireless backhaul node, and the method includes:

Receiving configuration parameters sent by the donor base station, where the configuration parameters include one or more configuration information;

Establishing a first bearer with the donor base station according to the first configuration information in the configuration parameter, and/or establishing, with the second configuration information in the configuration parameter, the donor base station and/or other The second bearer between the nodes.

Optionally, the receiving configuration parameters sent by the donor base station include:

Receiving an explicit indication or an implicit indication sent by the donor base station;

The configuration parameter is determined according to the explicit indication or the implicit indication.

Optionally, the method further includes:

Establishing a new second bearer with the donor base station or other nodes according to the third configuration information in the configuration parameter, or

And reconfiguring the established second bearer according to the fourth configuration information in the configuration parameter.

Optionally, the method further includes:

Deleting the second bearer and releasing resources corresponding to the second bearer.

Optionally, after establishing a second bearer with the donor base station and/or with other nodes, the method further includes:

Receiving a data packet sent by a child node of the wireless backhaul node, where the data packet includes routing information;

Determining a corresponding second bearer according to the routing information;

Transmitting, according to the second bearer, the data packet to the donor base station or to a parent node of the wireless backhaul node;

or,

Receiving a data packet sent by a parent node of the wireless backhaul node, where the data packet includes routing information;

Determining a corresponding second bearer according to the routing information;

And transmitting, according to the second bearer, the data packet to a child node of the wireless backhaul node.

Optionally, the routing information includes any one or more of the following combinations:

UE identity and UE bearer identity;

a unique identifier assigned by the donor base station to the UE bearer;

The unique identifier assigned by the donor base station to the second bearer corresponding to the access node of the UE

The identifier of the pipeline corresponding to the second bearer;

Routing information of the access node of the UE;

The IP address of the target node.

The second aspect provides a bearer management method for a wireless backhaul node, which is applied to a donor base station, where the method includes:

Sending configuration parameters to the wireless backhaul node, where the first configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a first bearer with the donor base station, and/or the second configuration information in the configuration parameter And used to instruct the wireless backhaul node to establish a second bearer with the donor base station and/or other nodes.

Optionally, sending configuration parameters to the wireless backhaul node includes:

Sending an explicit indication or an implicit indication to the wireless backhaul node, the explicit indication or implicit indication being used to instruct the wireless backhaul node to determine the configuration parameter.

Optionally, the third configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a new second bearer with the donor base station or other node, or the fourth configuration information in the configuration parameter is used. The wireless backhaul node is instructed to reconfigure the established second bearer.

In a third aspect, a wireless backhaul node is provided, including: a first processor and a first transceiver, where

The first transceiver is configured to: receive configuration parameters sent by a donor base station, where the configuration parameters include one or more configuration information;

The first processor is configured to: establish a first bearer with the donor base station according to the first configuration information in the configuration parameter, and/or establish and cooperate according to the second configuration information in the configuration parameter A second bearer between the donor base station and/or other nodes.

Optionally, the first transceiver is further configured to: receive an explicit indication or an implicit indication sent by the donor base station;

The first processor is further configured to: determine the configuration parameter according to the explicit indication or the implicit indication.

Optionally, the first processor is further configured to: establish a new second bearer with the donor base station or other nodes according to the third configuration information in the configuration parameter, or according to the configuration parameter The fourth configuration information is reconfigured for the established second bearer.

Optionally, the first processor is further configured to:

Deleting the second bearer and releasing resources corresponding to the second bearer.

Optionally, the first transceiver is further configured to: receive a data packet sent by a child node of the wireless backhaul node, where the data packet includes routing information;

The first processor is further configured to: determine, according to the routing information, a corresponding second bearer;

The first transceiver is further configured to: send, according to the second bearer, the data packet to the donor base station or to a parent node of the wireless backhaul node;

or,

The first transceiver is further configured to: receive a data packet sent by a parent node of the wireless backhaul node, where the data packet includes routing information;

The first processor is further configured to: determine, according to the routing information, a corresponding second bearer;

The first transceiver is further configured to: send the data packet to a child node of the wireless backhaul node according to the second bearer.

Optionally, the routing information includes any one or more of the following combinations:

UE identity and UE bearer identity;

a unique identifier assigned by the donor base station to the UE bearer;

The unique identifier assigned by the donor base station to the second bearer corresponding to the access node of the UE

The identifier of the pipeline corresponding to the second bearer;

Routing information of the access node of the UE;

The IP address of the target node.

In a fourth aspect, a donor base station is provided, including: a second processor and a second transceiver, where

The second transceiver is configured to: send a configuration parameter to a wireless backhaul node, where the first configuration information of the configuration parameter is used to indicate that the wireless backhaul node establishes a first bearer with a donor base station, and/or The second configuration information in the configuration parameter is used to instruct the wireless backhaul node to establish a second bearer with the donor base station and/or other nodes.

Optionally, the second transceiver is further configured to:

Sending an explicit indication or an implicit indication to the wireless backhaul node, the explicit indication or implicit indication being used to instruct the wireless backhaul node to determine the configuration parameter.

Optionally, the third configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a new second bearer with the donor base station or other node, or the fourth configuration information in the configuration parameter is used. The wireless backhaul node is instructed to reconfigure the established second bearer.

In a fifth aspect, a wireless backhaul node is provided, comprising: a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor A step of implementing a bearer management method for a wireless backhaul node as described in the first aspect.

In a sixth aspect, a donor base station is provided, comprising: a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program being implemented by the processor The step of the bearer management method of the wireless backhaul node as described in the second aspect.

A seventh aspect, further provides a computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the wireless device of the first aspect or the second aspect The steps of the bearer management method of the backhaul node.

In this way, when there is a wireless backhaul in the 5G network, the bearer can be correctly established and managed on each hopping wireless node to meet the requirements of subsequent UE services and data transmission, thereby improving system management efficiency.

DRAWINGS

Various other advantages and benefits will become apparent to those skilled in the art from a The drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting. Throughout the drawings, the same reference numerals are used to refer to the same parts. In the drawing:

1 is a schematic diagram of a 5G mobile communication system in the related art;

2 is a schematic diagram of a user plane protocol stack in the related art;

3 is a schematic diagram of a control plane protocol stack in the related art;

4 is a flowchart of a data transmission method according to an embodiment of the present disclosure;

FIG. 5 is a second flowchart of a data transmission method according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of bearer mapping in an embodiment of the present disclosure;

FIG. 7 is a structural diagram of a wireless backhaul node according to an embodiment of the present disclosure;

FIG. 8 is a structural diagram of a donor base station according to an embodiment of the present disclosure;

FIG. 9 is a second structural diagram of a wireless backhaul node according to an embodiment of the present disclosure;

FIG. 10 is a second structural diagram of a donor base station according to an embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

The term "comprise" and its variations in the specification and claims of the present application are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited Those steps or units listed are included, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices. Furthermore, the use of "and/or" in the <RTI ID=0.0> </ RTI> <RTI ID=0.0> </ RTI> <RTI ID=0.0> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> <RTIgt;

In the embodiments of the present disclosure, the words "exemplary" or "such as" are used to mean an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in the disclosed embodiments should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the words "exemplary" or "such as" is intended to present the concepts in a particular manner.

In order to better understand the technical solution of the embodiment of the present disclosure, the following technical points are first introduced:

(1) Introduction to the 5G mobile communication system.

In a 5G system, most of the nodes on the network side have wired connections, that is, gNBs are connected by wired links, gNBs (NR NodeBs) and core network nodes, such as access and mobility management functions (Access and Mobility Management Function). , AMF), User Plane Function (UPF), etc., also take a wired link connection between them, see Figure 1.

(2) Introduction to the 5G wireless protocol architecture.

The 5G basic user plane protocol layer includes: Service Discovery Application Profile (SDAP), Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and media connection. Incoming Control (Media Access Control, MAC) and Physical Layer (PHY). The control plane protocol layer includes: Non-access stratum (NAS), Radio Resource Control (RRC), PDCP, RLC, MAC, and PHY. The protocol stack structure diagram of the user plane and the control plane is shown in Figure 2 and Figure 3.

Referring to FIG. 4, a flow of a bearer management method for a wireless backhaul node according to an embodiment of the present disclosure is shown. The execution body of the method is a wireless backhaul node (or an L2 wireless backhaul node, which is equivalent to a layer 2 wireless access device). ,Specific steps are as follows:

Step 401: Receive configuration parameters sent by a donor base station, where the configuration parameters include multiple configuration information.

Optionally, receiving an explicit indication or an implicit indication sent by the donor base station; determining the configuration parameter according to the explicit indication or the implicit indication.

For example, the configuration parameter may be RRC reconfiguration signaling, and is of course not limited thereto.

Step 402: Establish a first bearer with the donor base station according to the first configuration information in the configuration parameter, and/or establish with the donor base station and/or other according to the second configuration information in the configuration parameter. The second bearer between the nodes.

The first configuration information and the second configuration information may be the same configuration information in the configuration parameters, or may be different configuration information.

The data carried by the first bearer and the second bearer may be the agreed or default data. For example, the first bearer is used to carry data initiated by the wireless backhaul node itself, such as RRC signaling, NAS signaling, The F1AP message, the OAM data, and the like, the second bearer is used to carry data of other nodes or UEs that are forwarded by the wireless backhaul node, and is not limited thereto.

In the embodiment of the present disclosure, the wireless backhaul node is equivalent to an intermediate wireless node, and may have a parent node and a child node, which are respectively a wireless node in a direction close to the donor base station and away from the donor base station, for example, the wireless backhaul node is a base station, in step 402. The other node may be the parent of the wireless backhaul node or a child of the wireless backhaul node.

In the embodiment of the present disclosure, the first bearer may also be referred to as a full protocol bearer, and may include an SRB and a DRB. The second bearer may also be referred to as a semi-protocol bearer, including a DRB, and the first bearer and the second bearer belong to the wireless backhaul. Node, and the total number of DRBs is limited by the maximum number of DRBs supported by the NR.

In an embodiment of the present disclosure, the first bearer includes: an RRC layer, a PDCP layer, an RLC layer, a MAC layer, and a PHY layer; the second bearer includes: an Adapt layer, an RLC layer, a MAC layer, and a PHY layer, where The Adapt layer is located above the RLC layer, or the Adapt layer is located above the MAC layer, or the Adapt layer is merged with the RLC layer to have a part of the RLC layer function and routing function, or the Adapt layer and the The MAC layer merge has some of the RLC layer functions and routing functions.

In an embodiment of the present disclosure, optionally, the method further includes: establishing, according to the third configuration information in the configuration parameter, a new number between the donor base station or a parent node of the wireless backhaul node And the second bearer is reconfigured according to the fourth configuration information in the configuration parameter.

The third configuration information and the fourth configuration information may be the same configuration information in the configuration parameters, or may be different configuration information.

It is also understood that some or all of the foregoing first configuration information, second configuration information, third configuration information, and fourth configuration information may be the same configuration information, for example, the first configuration information and the third configuration information are the same. A configuration information, or the second configuration information and the fourth configuration information are the same configuration information, or the first configuration information, the second configuration information, the third configuration information, and the fourth configuration are the same configuration information.

In an embodiment of the present disclosure, optionally, the method further includes: deleting the second bearer, and releasing resources corresponding to the second bearer.

In an embodiment of the present disclosure, optionally, the method further includes: after establishing a second bearer with the donor base station and/or with other nodes, receiving a data packet sent by a child node of the wireless backhaul node, where The data packet includes routing information; determining, according to the routing information, a corresponding second bearer; and sending, according to the second bearer, the data packet to the donor base station or to a parent node of the wireless backhaul node.

In an embodiment of the present disclosure, optionally, the method further includes: after establishing a second bearer with the donor base station and/or with other nodes, receiving a data packet sent by a parent node of the wireless backhaul node. The data packet includes routing information; determining, according to the routing information, a corresponding second bearer; and sending, according to the second bearer, the data packet to a child node of the wireless backhaul node.

In an embodiment of the present disclosure, optionally, the routing information includes any one or more of the following combinations: a UE identifier and a second bearer identifier, for example, a UE CRNTI and a UE's DRB ID or a QoS Flow ID (QoS Flow ID) (QFI); a unique identifier assigned by the donor base station to the second bearer; a unique identifier assigned by the donor base station to the second bearer corresponding to the access node of the UE; an identifier of the pipeline corresponding to the second bearer (or called a transport pipeline); Routing information of the access node; and the IP address of the target node.

In this way, when there is a wireless backhaul in the 5G network, the bearer can be correctly established and managed on each hopping wireless node to meet the requirements of subsequent UE services and data transmission, thereby improving system management efficiency.

Referring to FIG. 5, a flow of a bearer management method for a wireless backhaul node according to an embodiment of the present disclosure is shown. The execution subject of the method is a donor base station, and the specific steps are as follows:

Step 501: Send a configuration parameter to a wireless backhaul node, where the first configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a first bearer with a donor base station, and/or, in the configuration parameter The second configuration information is used to indicate that the wireless backhaul node establishes a second bearer with the donor base station and/or other nodes;

The first configuration information and the second configuration information may be the same configuration information in the configuration parameters, or may be different configuration information.

The data carried by the first bearer and the second bearer may be the agreed or default data. For example, the first bearer is used to carry data initiated by the wireless backhaul node, and the second bearer is used to carry the bearer. The data of other nodes or UEs forwarded by the wireless backhaul node.

For example, an explicit indication or an implicit indication is sent to the wireless backhaul node, the explicit indication or the implicit indication is used to instruct the wireless backhaul node to determine the configuration parameter.

In the embodiment of the present disclosure, the first bearer may also be referred to as a full protocol bearer, and may include an SRB and a DRB. The second bearer may also be referred to as a semi-protocol bearer, including a DRB, and the first bearer and the second bearer belong to the wireless backhaul. Node, and the total number of DRBs is limited by the maximum number of DRBs supported by the NR.

In an embodiment of the present disclosure, optionally, the third configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a new second bearer with the donor base station or a parent node of the wireless backhaul node, Or the fourth configuration information in the configuration parameter is used to indicate that the wireless backhaul node reconfigures the established second bearer.

The third configuration information and the fourth configuration information may be the same configuration information in the configuration parameters, or may be different configuration information.

It is also understood that some or all of the foregoing first configuration information, second configuration information, third configuration information, and fourth configuration information may be the same configuration information, for example, the first configuration information and the third configuration information are the same. A configuration information, or the second configuration information and the fourth configuration information are the same configuration information, or the first configuration information, the second configuration information, the third configuration information, and the fourth configuration are the same configuration information.

In an embodiment of the present disclosure, the first bearer includes: an RRC layer, a PDCP layer, an RLC layer, a MAC layer, and a PHY layer; the second bearer includes: an Adapt layer, an RLC layer, a MAC layer, and a PHY layer, where The Adapt layer is located above the RLC layer, or the Adapt layer is located above the MAC layer, or the Adapt layer is merged with the RLC layer to have a part of the RLC layer function and routing function, or the Adapt layer and the The MAC layer merge has some of the RLC layer functions and routing functions.

In this way, when there is a wireless backhaul in the 5G network, the bearer can be correctly established and managed on each hopping wireless node to meet the requirements of subsequent UE services and data transmission, thereby improving system management efficiency.

Example 1: Initial bearer setup and maintenance for a single-hop wireless backhaul node.

The so-called single-hop wireless backhaul node refers to a node that directly establishes a connection with a donor base station (DgNB) through a one-hop wireless backhaul link. Since such a node has a relatively simple link composition, it is first described as an example.

When the single-hop wireless backhaul node is initially powered on, it may need to first connect with the network side as the UE identity to obtain basic configuration, such as a Donor cell list, from the network side. In this process, the single-hop wireless backhaul node fully performs the behavior of the UE. At this time, the bearer configured by the Donor cell is a full protocol stack bearer, which is used to carry its signaling, operation management and maintenance (OAM). Data, etc., for example, Signaling Radio Bearer 1 (SRB1) is used for Radio Resource Control (RRC) signaling, and SRB2 is used for Non-Access Stratum (NAS) signaling. Data Radio Bearer (DRB) is used for OAM data and the like. The behavior at this time is similar to the UE.

When the single-hop wireless backhaul node establishes a connection with the network again as the network node identity, the main purpose at this time is to open all network connections, and prepare for starting the data forwarding service as a base station capable of serving the UE. When the connection is initially established, the Donor cell also needs to configure the relevant SRB1 and/or SRB2 for the node, which is used to transmit RRC signaling and NAS signaling related to the node respectively. The RRC signaling is between the node and the Donor cell. Passing, NAS signaling is passed between the node and the Access and Mobility Management Function (AMF) of the node, so the protocol stacks of the two SRBs are full protocol stacks, that is, the node side has RRC PDCP, RLC, MAC, and PHY also have peer RRC, PDCP, RLC, MAC, and PHY protocol entities on the Donor cell side.

The subsequent single-hop wireless backhaul node needs to communicate with the OAM, and downloads the working parameters, such as the working frequency and bandwidth, basic network parameters, etc., from the OAM. For the bearer of the OAM data, the Donor cell can configure a DRB, the DRB is a DRB of a full protocol stack, that is, the node side has RRC, PDCP, RLC, MAC, and PHY, and also has peer-to-peer RRC, PDCP, RLC, MAC, and PHY protocol entities on the Donor cell side.

The single-hop wireless backhaul node also needs to establish an F1 interface with the DgNB. The data on the F1 interface also needs a DRB to be carried on the wireless link, and the Donor cell can establish a new DRB for it, or reuse the existing one. The DRB, for example, multiplexes the DRB carrying the OAM data, and the DRB must be a DRB of a full protocol stack.

If the single-hop wireless backhaul node needs other interfaces, the related interface data also needs to be carried by the DRB on the radio path, and the Donor cell can establish a new DRB for it, or reuse the existing DRB, for example, With a DRB carrying OAM data, the DRB must be a DRB of a full protocol stack.

The common feature of the foregoing bearers is that the data transmitted on the bearer is terminated by the node, that is, generated by the node or sent by other nodes to the node, so the bearers must be all protocol stacks to meet the transmission requirements. And security needs. When the Donor cell configures these bearers for the wireless node, there is an explicit or implicit indication that this is a full protocol stack bearer. Explicit refers to a specific bit (bit) indicating whether it is a full protocol stack or a half. Protocol stack, implicitly refers to whether it is a full protocol stack or a half protocol stack by implicit means. For example, SRB can only be a full protocol stack. If an SRB is configured, it does not need to indicate the protocol stack type. For DRB, it can also be defaulted. DRB1-2 is a full protocol stack, and other DRBs are half protocol stacks. It is also possible to adopt a mixed usage of two ways, that is, an implicit mode for the SRB, a default full protocol stack, and a DRB can take a display indication.

After the wireless node completes the initialization and establishes the connection process, basically its bearer type is the full protocol stack type at this time. However, in order to provide multi-hop services for other nodes or provide data forwarding services for the UEs, the Donor cell may also establish a default semi-protocol bearer for the node in advance, which is used to carry other UEs and other nodes before establishing their dedicated bearers. The data, of course, belongs to the network implementation.

After the basic initialization is completed on the wireless node and the basic bearer is established, the wireless node can start to access other users to the lower air interface to provide base station services.

Example 2: Subsequent bearer setup and maintenance for a single-hop wireless backhaul node.

Based on the example 1, the single-hop wireless backhaul node can start to access other users and provide base station services.

At this time, if one UE or other wireless node initiates access to the node, the node acts as an L2 forwarding device and needs to process MAC layer related processes, such as random access, and provide L2 level for other signaling and data. Forwarding, in general, the initial establishment signaling of the UE and other nodes is carried by the RRC container of the F1AP message of the node, that is, the signaling can be assembled in the F1AP message of the node. The DRB is carried over the entire protocol stack between the node and the Donor cell. Note that this refers to the UE or other nodes directly accessing the node. Since the node is their home cell, the signaling and data types can be distinguished, and the signaling is transmitted on the F1AP bearer. If it is other multi-hop data, after the previous encapsulation, it is already DRB data, and it is impossible to distinguish the type. At this time, it may be directly placed on the bearer of the semi-protocol stack for transmission.

It should be noted that it is possible to transmit signaling of the UE or other nodes on the DRB of the full protocol stack of the node and the DRB of the half protocol stack. Therefore, such DRBs need special configuration, such as enabling integrity protection. .

When the UE initiates a service, a full protocol stack DRB bearer of the peer end needs to be established between the UE and the donor cell. The bearer between the node and the Donor cell also needs to have a corresponding half protocol stack for bearer. The corresponding semi-protocol bearer bearer may be established for the node according to the quality of service (QoS) parameter requirement, or when the corresponding semi-protocol stack bearer already exists, the new UE service may be added to the existing UE service. The half-stack stack is reconfigured to meet new requirements.

For example, when the first UE initiates the first service, there is no semi-protocol bearer bearer between the node and the donn cell, and the Donor cell configures the dedicated DRB for the UE. The cell also needs to send a new signaling carried by the semi-protocol to the node, and configure parameters carried by the semi-protocol according to the service QoS requirements of the UE, such as scheduling priority, transmission mode (AM/UM), and even some guarantee bits. Rate (Guaranteed Bit Rate, GBR) parameter. This half-protocol stack bearer is used to transmit this service of the UE. Later, when the second UE also initiates a similar service, at this time, because there is already a suitable half protocol stack bearer between the node and the Donor cell, it is not necessary to create a new half protocol stack bearer at this time. It is necessary to determine whether the existing half-protocol bearer can meet the requirements for carrying a new service. If not, reconfigure the parameters. For example, because the new service is added, the GBR parameter needs to be increased. One user GRB is m, and the second user GBR is used. For n, after the merge transmission, merge the GBR to m+n, and this new GBR parameter can be reassigned to the existing bearer to meet the new requirements.

The process of deleting is similar. When the service of a UE ends, the half-protocol bearer carrying the service may need to be reconfigured to remove the resources of the service. If there is no other service to be transmitted on the half-stack stack. The half protocol stack bearer can also be deleted.

FIG. 7 is a schematic diagram of a simple bearer mapping, in which data terminated by the node is transmitted through the full protocol stack, and the transit data is generally transmitted through the semi-protocol stack. More special signaling can be transmitted either by the former or by the latter.

Example 3: Bearer mapping for a single-hop wireless backhaul node.

The establishment, modification and release procedures of the UE or other wireless nodes in data forwarding through a half-protocol bearer between a wireless node and a donor are mentioned in Example 1 and Example 2. In this example, the mapping between bearers is emphasized. Relationship establishment and addressing.

Generally, in a half protocol stack bearer between a wireless node and a Donor cell, data of the same or approximate Quality of Service (QoS) requirements of multiple UEs or multiple other wireless nodes is transmitted. Since the data needs to be transmitted through the same wireless path between the wireless node and the Donor cell, it can be aggregated and transmitted. However, these data are essentially different, and the transmission paths that need to pass are also different, so further differentiation is needed for proper routing and transmission. There are three ways to distinguish UE data:

Carrying the UE identifier and the UE bearer identifier, for example, the UE CRNTI and the DRB ID of the UE or the QoS Flow ID (QFI);

Assigning a unique identifier to each dedicated UE bearer under one DgNB;

Pipe-level mapping, that is, on each segment of the air interface, a dedicated pipe is established for the UE bearer. This pipe has its own specific identifier (which may be the adapt ID of this paragraph), and each transit node stores One-to-one mapping relationship between two pipes of the same bearer;

The routing information carrying the final node in the data packet, the so-called final node refers to the access node of the UE, the node closest to the UE;

Using the IP address of the target node, the uplink destination IP address is the IP address of the CU-UP, and the downlink destination IP address is the IP address of the home (or access or first hop) wireless backhaul node of the UE, and the path to each IP address. Initialization has been completed at the time of initial network establishment;

The above mapping relationship is established through control plane signaling. When establishing and modifying DRB bearers at each level, the corresponding routing information is configured to each hop wireless backhaul node passing through, and the routing information in the subsequent data packets is carried in In the Adapt packet header (only the last mode IP address is directly carried in the IP header, no additional Adapt packet header is needed), and the wireless backhaul node of each hop can complete the correct routing of the packet through the header.

Example 4: Bearer setup and maintenance for a multi-hop wireless backhaul node.

First, a newly accessed wireless backhaul node, if accessing another wireless backhaul node, the already existing wireless backhaul node must have established a basic connection, which is equivalent to the establishment process of Example 1.

Subsequently, when the newly accessed wireless backhaul node performs access and initialization, it mainly performs signaling and data transmission with the Donor or the core network, and needs to establish a full protocol stack SRB and DRB between the new node and the Donor. In the signaling and data transmission terminated at the new node, these full protocol stacks are carried, because they need to be forwarded by the intermediate node, so the intermediate node carries the corresponding half protocol stack bearer of the intermediate node for transmission.

For the newly accessed wireless backhaul node, the establishment process is similar to the foregoing, except that one or more intermediate nodes are involved, and these intermediate nodes need to forward the data of the newly accessed backhaul node, so The bearer establishment or modification and routing configuration process involving intermediate nodes.

For example, when node 1 is newly accessed, it may need to pass through node 2 -> node 3 -> Donor. Node N and Donor need to establish a basic full protocol stack SRB for transmitting node 1 signaling. It is necessary to establish a full protocol stack DRB for transmitting data terminated at node 1. These bearers are transmitted on the node 2 and node 3 through the DRB bearer of the semi-protocol stack, and corresponding bearer mapping needs to be performed according to the transmission QoS requirement, if the node 2 and node 3 do not have a bearer that just meets the QoS requirements, then a new one needs to be established. If it already exists, the configuration or route mapping information needs to be updated.

A wireless backhaul node is also provided in the embodiment of the present disclosure. The principle of the wireless backhaul node is similar to that of the wireless backhaul node in the embodiment of the present disclosure. Therefore, the implementation of the wireless backhaul node may refer to the implementation of the method. The repetitions are no longer described.

Referring to FIG. 7, there is shown a structure of a wireless backhaul node, which includes a first processor 701 and a first transceiver 702, in accordance with an embodiment of the present disclosure, wherein

The first transceiver 702 is configured to: receive configuration parameters sent by a donor base station, where the configuration parameters include one or more configuration information;

The first processor 701 is configured to: establish, according to the first configuration information in the configuration parameter, the first bearer with a donor base station, and/or according to the second configuration information in the configuration parameter. Establishing a second bearer with the donor base station and/or other points;

The first configuration information and the second configuration information may be the same configuration information in the configuration parameters, or may be different configuration information.

The data carried by the first bearer and the second bearer may be the agreed or default data. For example, the first bearer is used to carry data initiated by the wireless backhaul node, and the second bearer is used to carry the bearer. Data of other nodes or user equipment UEs forwarded by the wireless backhaul node.

In an embodiment of the disclosure, optionally, the first bearer includes: an RRC layer, a PDCP layer, an RLC layer, a MAC layer, and a PHY layer;

The second bearer includes: an Adapt layer, an RLC layer, a MAC layer, and a PHY layer, where the Adapt layer is located above the RLC layer, or the Adapt layer is located above the MAC layer, or the Adapt layer and the The RLC layer merge has a part of the RLC layer function and routing function, or the Adapt layer and the MAC layer merge have some of the RLC layer functions and routing functions.

In an embodiment of the present disclosure, optionally, the first transceiver is further configured to: receive an explicit indication or an implicit indication sent by the donor base station;

The first processor 701 is further configured to: determine the configuration parameter according to the explicit indication or the implicit indication.

In the embodiment of the present disclosure, the first processor 701 is further configured to: establish a new second with the donor base station or other nodes according to the third configuration information in the configuration parameter. Carrying, or reconfiguring the established second bearer according to the fourth configuration information in the configuration parameter.

The third configuration information and the fourth configuration information may be the same configuration information in the configuration parameters, or may be different configuration information.

It is also understood that some or all of the foregoing first configuration information, second configuration information, third configuration information, and fourth configuration information may be the same configuration information, for example, the first configuration information and the third configuration information are the same. A configuration information, or the second configuration information and the fourth configuration information are the same configuration information, or the first configuration information, the second configuration information, the third configuration information, and the fourth configuration are the same configuration information.

In the embodiment of the present disclosure, the first processor 701 is further configured to: delete the second bearer, and release resources corresponding to the second bearer.

In the embodiment of the present disclosure, the first transceiver 702 is further configured to: receive a data packet sent by a child node of the wireless backhaul node, where the data packet includes routing information;

The first processor 701 is further configured to: determine, according to the routing information, a corresponding second bearer;

The first transceiver 702 is further configured to: send, according to the second bearer, the data packet to the donor base station or to a parent node of the wireless backhaul node;

or,

The first transceiver 702 is further configured to: receive a data packet sent by a parent node of the wireless backhaul node, where the data packet includes routing information;

The first processor 701 is further configured to: determine, according to the routing information, a corresponding second bearer;

The first transceiver 702 is further configured to: send the data packet to a child node of the wireless backhaul node according to the second bearer.

In an embodiment of the present disclosure, optionally, the routing information includes any one or more of the following combinations:

a UE identifier and a second bearer identifier;

a unique identifier assigned by the donor base station to the second bearer;

The unique identifier assigned by the donor base station to the second bearer corresponding to the access node of the UE

The identifier of the pipeline corresponding to the second bearer;

Routing information of the access node of the UE;

The IP address of the target node.

The wireless backhaul node provided by the embodiment of the present disclosure may perform the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.

A donor base station is also provided in the embodiment of the present disclosure. The principle of the problem solved by the donor base station is similar to the bearer management method of the wireless backhaul node in the embodiment of the present disclosure. Therefore, the implementation of the donor base station can refer to the implementation of the method. No longer stated.

Referring to FIG. 8, there is shown a structure of a donor base station including: a second processor 801 and a second transceiver 802, in accordance with an embodiment of the present disclosure, wherein

The second transceiver 801 is configured to: send a configuration parameter to a wireless backhaul node, where the first configuration information of the configuration parameter is used to indicate that the wireless backhaul node establishes a first bearer with a donor base station, and/or The second configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a second bearer with the donor base station and/or other nodes;

The first configuration information and the second configuration information may be the same configuration information in the configuration parameters, or may be different configuration information.

The data carried by the first bearer and the second bearer may be the agreed or default data. For example, the first bearer is used to carry data initiated by the wireless backhaul node, and the second bearer is used to carry the bearer. The data of other nodes or UEs forwarded by the wireless backhaul node.

In an embodiment of the disclosure, optionally, the first bearer includes: an RRC layer, a PDCP layer, an RLC layer, a MAC layer, and a PHY layer;

The second bearer includes: an Adapt layer, an RLC layer, a MAC layer, and a PHY layer, where the Adapt layer is located above the RLC layer, or the Adapt layer is located above the MAC layer, or the Adapt layer and the The RLC layer merge has a part of the RLC layer function and routing function, or the Adapt layer and the MAC layer merge have some of the RLC layer functions and routing functions.

In the embodiment of the present disclosure, optionally, the second transceiver 801 is further configured to:

Sending an explicit indication or an implicit indication to the wireless backhaul node, the explicit indication or implicit indication being used to instruct the wireless backhaul node to determine the configuration parameter.

In an embodiment of the present disclosure, optionally, the third configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a new second bearer with the donor base station or other node, or the configuration parameter. The fourth configuration information is used to instruct the wireless backhaul node to reconfigure the established second bearer.

The donor base station provided by the embodiment of the present disclosure may perform the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.

Referring to FIG. 9, an embodiment of the present disclosure provides a wireless backhaul node wireless backhaul node 900, including: a processor 901, a transceiver 902, a memory 903, a user interface 904, and a bus interface.

Among them, the processor 901 can be responsible for managing the bus architecture and the usual processing. The memory 903 can store data used by the processor 901 when performing operations.

In the embodiment of the present disclosure, the wireless backhaul node 900 may further include: a computer program stored on the memory 903 and operable on the processor 901, the computer program being executed by the processor 901 to: receive configuration parameters sent by the donor base station, The configuration parameter includes one or more configuration information; establishing, according to the first configuration information in the configuration parameter, the first bearer with a donor base station, and/or establishing with the donor base station and/or The second bearer between the other nodes.

The first configuration information and the second configuration information may be the same configuration information in the configuration parameters, or may be different configuration information.

The data carried by the first bearer and the second bearer may be the agreed or default data. For example, the first bearer is used to carry data initiated by the wireless backhaul node, and the second bearer is used to carry the bearer. Data of other nodes or user equipment UEs forwarded by the wireless backhaul node.

In FIG. 9, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 901 and various circuits of memory represented by memory 903. The bus architecture can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, the present disclosure does not further describe it. . The bus interface provides an interface. Transceiver 902 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.

Referring to FIG. 10, an embodiment of the present disclosure provides a donor base station 1000, including: a processor 1001, a transceiver 1002, a memory 1003, a user interface 1004, and a bus interface.

Among them, the processor 1001 can be responsible for managing the bus architecture and the usual processing. The memory 1003 can store data used by the processor 1001 when performing operations.

In the embodiment of the present disclosure, the donor base station 1000 may further include: a computer program stored on the memory 1003 and operable on the processor 1001, the computer program being executed by the processor 1001 to: send configuration parameters to the wireless backhaul node, The first configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a first bearer with a donor base station, and/or establish a second bearer with the donor base station and/or other nodes.

The first configuration information and the second configuration information may be the same configuration information in the configuration parameters, or may be different configuration information.

The data carried by the first bearer and the second bearer may be the agreed or default data. For example, the first bearer is used to carry data initiated by the wireless backhaul node, and the second bearer is used to carry the bearer. The data of other nodes or UEs forwarded by the wireless backhaul node.

In FIG. 10, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003. The bus architecture can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and thus, the present disclosure does not further describe this. . The bus interface provides an interface. Transceiver 1002 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.

The steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions. The software instructions may be comprised of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, removable hard disk, read-only optical disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in a core network interface device. Of course, the processor and the storage medium may also exist as discrete components in the core network interface device.

Those skilled in the art will appreciate that in one or more examples described above, the functions described in this disclosure can be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present disclosure. The scope of the protection, any modifications, equivalents, improvements, etc., which are made on the basis of the technical solutions of the present disclosure, are included in the protection scope of the present disclosure.

Those skilled in the art will appreciate that embodiments of the present disclosure can be provided as a method, system, or computer program product. Thus, embodiments of the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, embodiments of the present disclosure may take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

Embodiments of the present disclosure are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It will be apparent to those skilled in the art that various modifications and changes can be made in the embodiments of the present disclosure without departing from the spirit and scope of the disclosure. Thus, the present disclosure is intended to cover such modifications and variations as the modifications and variations of the embodiments of the present disclosure.

Claims (21)

A bearer management method for a wireless backhaul node is applied to a wireless backhaul node, where the method includes: Receiving configuration parameters sent by the donor base station, where the configuration parameters include one or more configuration information; Establishing a first bearer with the donor base station according to the first configuration information in the configuration parameter, and/or establishing, with the second configuration information in the configuration parameter, the donor base station and/or other The second bearer between the nodes. The method of claim 1, wherein the receiving configuration parameters sent by the donor base station comprises: Receiving an explicit indication or an implicit indication sent by the donor base station; The configuration parameter is determined according to the explicit indication or the implicit indication. The method of claim 1 wherein the method further comprises: Establishing a new second bearer with the donor base station or other nodes according to the third configuration information in the configuration parameter, or And reconfiguring the established second bearer according to the fourth configuration information in the configuration parameter. The method of claim 1 or 3, wherein the method further comprises: Deleting the second bearer and releasing resources corresponding to the second bearer. The method of claim 1, wherein after establishing a second bearer with the donor base station and/or with other nodes, the method further comprises: Receiving a data packet sent by a child node of the wireless backhaul node, where the data packet includes routing information; Determining a corresponding second bearer according to the routing information; Transmitting, according to the second bearer, the data packet to the donor base station or to a parent node of the wireless backhaul node; or, Receiving a data packet sent by a parent node of the wireless backhaul node, where the data packet includes routing information; Determining a corresponding second bearer according to the routing information; And transmitting, according to the second bearer, the data packet to a child node of the wireless backhaul node. The method of claim 5 wherein the routing information comprises any one or more of the following: UE identity and UE bearer identity; a unique identifier assigned by the donor base station to the UE bearer; The unique identifier assigned by the donor base station to the second bearer corresponding to the access node of the UE The identifier of the pipeline corresponding to the second bearer; Routing information of the access node of the UE; The IP address of the target node. A bearer management method for a wireless backhaul node is applied to a donor base station, where the method includes: Sending configuration parameters to the wireless backhaul node, where the first configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a first bearer with the donor base station, and/or the second configuration information in the configuration parameter And used to instruct the wireless backhaul node to establish a second bearer with the donor base station and/or other nodes. The method of claim 7 wherein transmitting configuration parameters to the wireless backhaul node comprises: Sending an explicit indication or an implicit indication to the wireless backhaul node, the explicit indication or implicit indication being used to instruct the wireless backhaul node to determine the configuration parameter. The method according to claim 7, wherein the third configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a new second bearer with the donor base station or other nodes, or the configuration parameter The fourth configuration information is used to instruct the wireless backhaul node to reconfigure the established second bearer. A wireless backhaul node includes: a first processor and a first transceiver, wherein The first transceiver is configured to: receive configuration parameters sent by a donor base station, where the configuration parameters include one or more configuration information; The first processor is configured to: establish a first bearer with the donor base station according to the first configuration information in the configuration parameter, and/or establish and cooperate according to the second configuration information in the configuration parameter A second bearer between the donor base station and/or other nodes. The wireless backhaul node according to claim 10, wherein the first transceiver is further configured to: receive an explicit indication or an implicit indication sent by the donor base station; The first processor is further configured to: determine the configuration parameter according to the explicit indication or the implicit indication. The wireless backhaul node according to claim 10, wherein The first processor is further configured to: establish a new second bearer with the donor base station or other nodes according to the third configuration information in the configuration parameter, or according to the fourth of the configuration parameters. Configuration information, reconfiguring the established second bearer. The wireless backhaul node according to claim 10 or 12, wherein the first processor is further configured to: Deleting the second bearer and releasing resources corresponding to the second bearer. The wireless backhaul node according to claim 10, wherein The first transceiver is further configured to: receive a data packet sent by a child node of the wireless backhaul node, where the data packet includes routing information; The first processor is further configured to: determine, according to the routing information, a corresponding second bearer; The first transceiver is further configured to: send, according to the second bearer, the data packet to the donor base station or to a parent node of the wireless backhaul node; or, The first transceiver is further configured to: receive a data packet sent by a parent node of the wireless backhaul node, where the data packet includes routing information; The first processor is further configured to: determine, according to the routing information, a corresponding second bearer; The first transceiver is further configured to: send the data packet to a child node of the wireless backhaul node according to the second bearer. The wireless backhaul node of claim 14, wherein the routing information comprises any one or more of the following: UE identity and UE bearer identity; a unique identifier assigned by the donor base station to the UE bearer; The unique identifier assigned by the donor base station to the second bearer corresponding to the access node of the UE The identifier of the pipeline corresponding to the second bearer; Routing information of the access node of the UE; The IP address of the target node. A donor base station includes: a second processor and a second transceiver, wherein The second transceiver is configured to: send a configuration parameter to a wireless backhaul node, where the first configuration information of the configuration parameter is used to indicate that the wireless backhaul node establishes a first bearer with a donor base station, and/or The second configuration information in the configuration parameter is used to indicate that the wireless backhaul node establishes a second bearer with the donor base station and/or other nodes. The donor base station of claim 16 wherein said second transceiver is further for: Sending an explicit indication or an implicit indication to the wireless backhaul node, the explicit indication or implicit indication being used to instruct the wireless backhaul node to determine the configuration parameter. The donor base station according to claim 16, wherein the third configuration information of the configuration parameters is used to indicate that the wireless backhaul node establishes a new second bearer with the donor base station or other nodes, or the configuration The fourth configuration information in the parameter is used to instruct the wireless backhaul node to reconfigure the established second bearer. A wireless backhaul node comprising: a processor, a memory, and a computer program stored on the memory and operable on the processor, the computer program being executed by the processor to implement claims 1 to 6 The step of the bearer management method of the wireless backhaul node according to any one of the preceding claims. A donor base station comprising: a processor, a memory, and a computer program stored on the memory and operable on the processor, the computer program being implemented by the processor to implement as claimed in claims 7 to 9 The step of the bearer management method of the wireless backhaul node according to any one of the preceding claims. A computer readable storage medium, wherein the computer readable storage medium stores a computer program, the computer program being executed by a processor to implement the wireless backhaul node of any one of claims 1 to The step of carrying the management method, or the step of the bearer management method of the wireless backhaul node according to any one of claims 7 to 9.

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