WO2021032216A1 - 冗余会话建立方法及装置、无线承载建立方法及装置、节点、终端、介质 - Google Patents

冗余会话建立方法及装置、无线承载建立方法及装置、节点、终端、介质 Download PDF

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Publication number
WO2021032216A1
WO2021032216A1 PCT/CN2020/118511 CN2020118511W WO2021032216A1 WO 2021032216 A1 WO2021032216 A1 WO 2021032216A1 CN 2020118511 W CN2020118511 W CN 2020118511W WO 2021032216 A1 WO2021032216 A1 WO 2021032216A1
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redundant
user plane
node
secondary node
session
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PCT/CN2020/118511
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English (en)
French (fr)
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刘红军
马伟
李冬梅
张博山
文武
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中兴通讯股份有限公司
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Priority to US17/635,721 priority Critical patent/US20220286877A1/en
Publication of WO2021032216A1 publication Critical patent/WO2021032216A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures

Definitions

  • This application relates to the field of wireless communication, for example, to a method and device for establishing a redundant session, a method and device for establishing a radio bearer, nodes, terminals, and media.
  • Ultra-Relaible and Low Latency Communication is one of the three major application scenarios of the fifth-generation (5th-Generation, 5G) wireless communication technology.
  • 5G Fifth-generation
  • the 3GPP The Third Generation Partnership Project
  • the number of DU (Distributed Unit) included in the SN (Secondary Node) of the MN (Master Node) is not known, so only one A redundant session is established on this SN, or it is said that user data of only one redundant session can be sent on this SN.
  • This application provides a method and device for establishing a redundant session, a method and device for establishing a radio bearer, a node, a terminal, and a medium, so as to improve the reliability of data transmission in 5G wireless communication technology.
  • the embodiment of the present application provides a redundant session establishment method, including:
  • a corresponding redundant session is established in redundant user plane resources, where the redundant session request is a request generated by the master node according to the redundant user plane resource information.
  • the embodiment of the present application also provides a method for establishing a redundant session, including:
  • the embodiment of the application also provides a radio bearer establishment method, including:
  • a radio bearer corresponding to the redundant session is established one-to-one with the primary node or the distribution unit of the secondary node.
  • An embodiment of the present application also provides a redundant session establishment device, including:
  • a redundant user plane resource information sending module configured to generate redundant user plane resource information, and transmit the redundant user plane resource information to the master node;
  • the redundant session establishment module is configured to establish a corresponding redundant session in redundant user plane resources according to a redundant session request from the master node, and the redundant session request is for the master node according to the redundant session Request generated by user plane resource information.
  • An embodiment of the present application also provides a redundant session establishment device, including:
  • a redundant user plane resource information receiving module configured to receive redundant user plane resource information of the secondary node transmitted by the secondary node
  • the redundant session request establishment module is configured to generate a redundant session request according to the redundant user plane resource information, and send the redundant session request to the secondary node, so that the secondary node is in the redundant user plane The corresponding redundant session is established in the resource.
  • the embodiment of the present application also provides a radio bearer establishment device, including:
  • the radio bearer establishment module is used to establish a radio bearer corresponding to the redundant session with the master node or the distribution unit of the slave node according to the instruction of the master node or the slave node.
  • the embodiment of the present application also provides a secondary node, including:
  • One or more processors are One or more processors;
  • Storage device for storing one or more programs
  • the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement the redundant session establishment method applied to the secondary node as described in the embodiment of the present application.
  • the embodiment of the present application also provides a master node, including:
  • One or more processors are One or more processors;
  • Storage device for storing one or more programs
  • the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement the redundant session establishment method applied to the master node as described in the embodiments of the present application.
  • the embodiment of the present application also provides a terminal, including:
  • One or more processors are One or more processors;
  • Storage device for storing one or more programs
  • the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement the radio bearer establishment method according to the embodiment of the present application.
  • the embodiments of the present application also provide a storage medium, where the storage medium stores a computer program, and when the computer program is executed by a processor, any one of the methods in the embodiments of the present application is implemented.
  • Figure 1 is a schematic diagram of a dual-connection network architecture
  • Figure 2 is a schematic diagram of a redundant user plane path solution based on dual connections
  • Figure 3 is a schematic diagram of a redundant user plane path solution based on dual connections
  • Figure 4 is a schematic diagram of a centralized unit-distributed unit architecture based on dual connectivity
  • FIG. 5 is a schematic flowchart of a redundant session establishment method provided by this application.
  • Figure 6 is a schematic diagram of a centralized unit-control plane and centralized unit-user plane separation architecture
  • FIG. 7 is a schematic flowchart of a redundant session establishment method provided by this application.
  • FIG. 8 is a schematic flowchart of a method for establishing a radio bearer provided by this application.
  • FIG. 9 is a schematic structural diagram of a redundant session establishment apparatus provided by this application.
  • FIG. 10 is a schematic structural diagram of a redundant session establishment apparatus provided by this application.
  • FIG. 11 is a schematic structural diagram of a radio bearer establishment apparatus provided by this application.
  • Figure 12 is a schematic structural diagram of a secondary node provided by this application.
  • FIG. 13 is a schematic diagram of the structure of the master node provided by this application.
  • Figure 14 is a schematic structural diagram of a terminal provided by this application.
  • the mobile communication system includes mobile user equipment (User Equipment, UE) and network (Network) equipment, and the network equipment also includes Radio Access Network (RAN) equipment and Core Network (CN) equipment.
  • the RAN equipment includes: one or more cell groups, or one or more base stations, or one or more Node Bs (Node B, NB).
  • CN equipment refers to 5GC (5G Core, 5G core network) equipment, including: AMF (Access and Mobility Management Function, access and mobility management function), UPF (User Plane Function, user plane function), SMF (system management function, system management function) and other network elements.
  • AMF Access and Mobility Management Function, access and mobility management function
  • UPF User Plane Function, user plane function
  • SMF system management function, system management function
  • the UE In a dual connectivity (Dual Connectivity, DC) system, the UE establishes two or more connections with network equipment.
  • the core network 10 or UPF network element of the core network
  • the cell group (Cell group) 20 and cell group 30 of the radio access network are respectively established connections.
  • the radio access network includes a master node (Master Node, MN) and a secondary node (Secondary Node, SN), for example, the cell group 20 is MN, and the cell group 30 is SN.
  • URLLC is one of the three application scenarios of 5G technology.
  • 3GPP TR23.725 a dual-connection-based redundant user plane path solution is proposed in its solution.
  • the content of the solution is shown in Figure 2.
  • the specific content can be detailed in the description of the 3GPP protocol.
  • the user terminal starts to establish two redundant protocol data unit sessions (Redundant Protocol Data Unit Session, Redundant PDU Session), and configures a different DNN (Data Network Name, data network name) for each session ) And S-NSSAI (Single-Network Slice Selection Assistant Information, a single network slice selection assistance information) combination, respectively established on the primary base station and the secondary base station.
  • the system management function 1 (SMF1) and the system management function 2 (SMF2) determine whether the redundant session can be established.
  • SMF1 and SMF2 are based on a combination of S-NSSA, DNN, user authorization and local policy configuration.
  • SMF1 and SMF2 use RSN (Redundant Sequence Number) to distinguish the redundant sessions, and use a primary base station (Master NG-RAN) and a secondary base station (Secondary NG-RAN) to send user plane data respectively.
  • RSN Redundant Sequence Number
  • the user plane of one redundant session is established on user plane function 1 (UPF1)
  • the user plane of another redundant session is established on user plane function 2 (UPF2).
  • the configuration or establishment of the redundant session in the primary base station or the secondary base station as mentioned in this application means that the user data of the redundant session is sent on the primary base station or the secondary base station.
  • CN such as 5GC
  • RSN parameters for this redundant session that is: the configuration parameters of the redundant session include RSN parameters, and pass the control plane interface between CN and RAN (such as 5G NG interface) is sent to the RAN (such as 5G NG-RAN).
  • a redundant session establishment request is sent from the core network to the MN, and the MN establishes the redundant session to the MN or the MN according to the RSN parameters of the redundant session.
  • the MN establishes the redundant session to the MN or the MN according to the RSN parameters of the redundant session.
  • MN multi-connection architecture on the RAN side
  • the base station (gNB) on the radio access network (RAN) side adopts the CU-DU (Centralized Unit-Dutributed Unit, centralized unit-distributed unit) architecture, and a base station centralized unit (gNB Central Unit, gNB CU)
  • the following includes one or more base station distribution units (gNB Distributed Unit, gNB DU).
  • gNB Distributed Unit, gNB DU two base station distribution units are used as an example.
  • each network element MN or SN or DU
  • each network element has its own independent user plane resource.
  • FIG. 5 is a schematic flowchart of a redundant session establishment method provided by this application. This method can be applied to the situation of establishing redundant sessions in dual-connection and multi-connection architectures. The method can be executed by the redundant session establishment device applied to the secondary node provided by this application.
  • the redundant session establishment device can be implemented by software and/or hardware and integrated in the secondary node.
  • the secondary node may refer to wireless access. Secondary base station in the network.
  • a method for establishing a redundant session includes S110 and S120.
  • Redundant User Plane Resources refers to user plane resources for establishing redundant sessions.
  • the redundant user plane resource information refers to information generated according to the number of RUPRs in the secondary node, and is used by the secondary node to indicate the number of RUPRs it has to the primary node.
  • generating redundant user plane resource information includes: determining a quantity of redundant user plane resources; and generating redundant user plane resource information according to the quantity of redundant user plane resources.
  • the number of redundant user plane resources is:
  • the number of distribution units or, the first set value corresponding to the first target number range to which the number of distribution units belongs; or, the minimum value of the number of distribution units and the number of centralized unit control surfaces; or The second set value corresponding to the second target quantity range to which the minimum value belongs.
  • the RAN network element can theoretically have N RUPRs, and each DU has 1 RUPR.
  • a RAN node When the RAN node adopts the CU-DU architecture, a RAN node has 1 CU and multiple DUs, and each DU has its own independent RLC (Radio Link Control), MAC (Media Access Control), and media access control. Control) and physical layer, that is, each DU has its own independent user plane resources.
  • RLC Radio Link Control
  • MAC Media Access Control
  • Control media access control
  • physical layer that is, each DU has its own independent user plane resources.
  • a RAN node has only one CU. If the CU adopts a separate architecture of CU-CP (CU-Control Plane) and CU-UP (CU-User Plane, CU user plane), Then the CU can have multiple independent CU-UPs. At this time, each CU-UP has its own independent PDCP (Packet Data Convergence Protocol) and SDAP (Service Data Adaptation Protocol, business data adaptation protocol), that is, each CU-UP has its own independent User-face resources.
  • PDCP Packet Data Convergence Protocol
  • SDAP Service Data Adaptation Protocol, business data adaptation protocol
  • user plane resources include: PDCP and SDAP on the CU, RLC, MAC, and physical layer on the DU.
  • a RAN node such as gNB
  • CU-DU architecture there are several ways to determine the number of RUPRs it has:
  • the secondary node After the secondary node determines its RUPR quantity according to the above-mentioned RUPR quantity determination method, it generates corresponding RUPR information, and transmits it to the primary node through a message sent by the secondary node to the primary node.
  • transferring the redundant user plane resource information to the master node includes:
  • the redundant user plane resource information is transferred to the master node through the message sent by the secondary node to the primary node; wherein, the message sent by the secondary node to the primary node passes between the primary node and the secondary node Interface to send.
  • the message sent by the secondary node to the primary node through the 5G Xn interface includes redundant user plane resource information of the secondary node.
  • the primary node defaults that the number of RUPRs possessed by the secondary node is one.
  • the redundant user plane resource information includes any one of the following:
  • the redundant user plane resource information sent by the SN means that the SN can establish one or more redundant user plane connections, or the SN can establish one or more redundant user plane bearers, or The SN can establish a redundant session with one or more RSN values.
  • the master node After receiving the RUPR information delivered by the secondary node, the master node determines the number of RUPRs of the secondary node according to the redundant user plane resource information, and generates a redundant session request according to the number of RUPRs of the secondary node.
  • the redundant session request is sent by the primary node through a secondary node addition request message (SN Addition Request Message) or a secondary node modification request message (SN Modification Request Message).
  • SN Addition Request Message a secondary node addition request message
  • SN Modification Request Message a secondary node modification request message
  • the redundant session request includes: identification information of the redundant session.
  • the identification information of the redundant session is used to identify that the session is a redundant session, and is specifically used for the secondary node to establish a corresponding redundant session in the redundant user plane resource according to the identification information of the redundant session.
  • the secondary node After receiving the redundant session request sent by the master node, the secondary node establishes a redundant session corresponding to the redundant session request in RUPR.
  • establishing a corresponding redundant session in redundant user plane resources according to a redundant session request from the master node includes:
  • a corresponding redundant session is established in the redundant user plane resources.
  • establishing a corresponding redundant session in redundant user plane resources according to a redundant session request from the master node includes:
  • the redundant session is established in any redundant user plane resource.
  • the secondary node can establish this redundant session in any RUPR.
  • the redundant session request further includes: the redundant sequence number value of the redundant session.
  • the redundant sequence number value of the redundant session is used for the secondary node to establish a corresponding redundant session in the redundant user plane resource matching the redundant sequence number value of the redundant session.
  • establishing a corresponding redundant session in redundant user plane resources according to a redundant session request from the master node includes:
  • a corresponding redundancy is established in the redundant user plane resource matching the redundant serial number value of the redundant session Conversation.
  • the secondary node establishes the redundant session in the RUPR matching the redundant sequence number value.
  • the generated redundant session request is used to instruct the secondary node to establish a redundant session in the redundant user plane resources; if the primary node determines through the RUPR information The secondary node has at least two RUPRs, and the generated redundant session request is used to instruct the secondary node to establish at least one redundant session in redundant user plane resources.
  • the master node can determine the number of RUPRs possessed by the slave node through the RUPR information transmitted by the slave node, and then can establish one or more redundant sessions in the slave node according to the number of RUPRs, ensuring The reliability of redundant sessions also improves the reliability of data transmission in 5G wireless communication technology.
  • multiple redundant user plane connections, multiple redundant user plane bearers, and multiple RSN values are all "2" as an example for explanation (not limited, mostly refer to numbers greater than or equal to 2) ).
  • the RUPR information of the SN means: the SN can establish 1 or 2 redundant user plane connections, or the SN can establish 1 or 2 redundant user plane bearers, or the SN A redundant session with 1 or 2 RSN values can be established.
  • the message sent by SN to MN can be sent through the Xn interface between MN and SN. That is, the RUPR information is carried in the message sent through the Xn interface between the MN and SN.
  • the MN establishes one or more redundant sessions on the SN, including the following situations:
  • the redundant session is established in any redundant user plane resource, for example, the redundant session request does not include the RSN value of the redundant session).
  • the MN sends a redundant session request to the SN, and the redundant session request includes: request to establish a redundant session related information.
  • the related information of requesting to establish a redundant session including identification information of the redundant session, is used to identify that the session is a redundant session.
  • the related information of the request to establish a redundant session allows the redundant session to be established in any redundant user plane resource of the SN, and the related information of the request to establish a redundant session does not include the redundant session The RSN value.
  • the SN receives the redundant session request sent by the MN, and the redundant session request includes: request to establish a redundant session related information. If the related information for requesting to establish a redundant session includes identification information of the redundant session, the SN establishes the redundant session in its own redundant user plane resources.
  • the information related to the request to establish a redundant session includes any redundant user plane resource that allows the redundant session to be established in the SN (for example, the RSN value of the redundant session is not included), if the SN has multiple (For example, 2) redundant user plane resources, the SN can establish the redundant session in any redundant user plane resource.
  • the SN can establish a redundant session with two RSN values.
  • the MN sends a redundant session request to the SN.
  • the redundant session request includes information related to requesting the establishment of two redundant sessions.
  • the SN receives the redundant session request sent by the MN, and the redundant session request includes: request to establish two redundant sessions related information.
  • the method further includes:
  • the SN After the SN establishes a redundant session corresponding to the redundant session request in the redundant user plane resources, it sends a response message matching the redundant session request to the MN.
  • the response message includes the successful establishment of one or more redundant sessions. And/or information about the establishment failure.
  • the method further includes:
  • the MN and the SN respectively establish a radio bearer with the terminal, and carry the service data of the redundant user plane resource through the radio bearer.
  • the radio bearer established by the MN corresponds to the redundant session established by the SN
  • the radio bearer established by the SN corresponds to the redundant session established by the SN.
  • the SN establishes multiple radio bearers with the terminal through multiple DUs included therein, and carries the service data of the redundant user plane resources through the wireless bearers.
  • the multiple radio bearers established by the SN correspond to multiple redundant sessions established by the SN respectively.
  • FIG. 7 is a schematic flowchart of a redundant session establishment method provided by this application. This method can be applied to the situation of establishing redundant sessions in dual-connection and multi-connection architectures. The method can be executed by the redundant session establishment device applied to the master node provided by this application.
  • the redundant session establishment device can be implemented by software and/or hardware and integrated in the master node.
  • the master node may refer to wireless access The main base station in the network.
  • a method for establishing a redundant session includes S210 and S220.
  • S210 Receive redundant user plane resource information of the secondary node transmitted by the secondary node.
  • the redundant user plane resource information refers to information generated according to the number of RUPRs in the secondary node, and is used by the secondary node to indicate the number of RUPRs it has to the primary node.
  • receiving the redundant user plane resource information of the secondary node transmitted by the secondary node includes:
  • the message sent by the secondary node to the primary node through the 5G Xn interface includes redundant user plane resource information of the secondary node.
  • the secondary node generates redundant user plane resource information according to the number of redundant user plane resources it has.
  • the number of redundant user plane resources of the secondary node is:
  • the number of distribution units or, the first set value corresponding to the first target number range to which the number of distribution units belongs; or, the minimum value of the number of distribution units and the number of centralized unit control surfaces; or The second set value corresponding to the second target quantity range to which the minimum value belongs.
  • the secondary node transmitting the redundant user plane resource information to the primary node includes:
  • the secondary node transfers redundant user plane resource information to the primary node through a message sent by the secondary node to the primary node; wherein the message sent by the secondary node to the primary node passes through the primary node and the secondary node Between the interface to send.
  • the message sent by the secondary node to the primary node through the 5G Xn interface includes redundant user plane resource information of the secondary node.
  • the primary node defaults that the number of RUPRs possessed by the secondary node is one.
  • the redundant user plane resource information includes any one of the following:
  • the number of redundant user plane connections that the secondary node allows to establish, the number of redundant user plane bearers that the secondary node allows to establish, and the redundant sequence number that the secondary node allows to establish is a redundant session with a set sequence value Quantity.
  • the redundant user plane resource information sent by the SN means that the SN can establish one or more redundant user plane connections, or the SN can establish one or more redundant user plane bearers, or The SN can establish a redundant session with one or more RSN values.
  • S220 Generate a redundant session request according to the redundant user plane resource information, and send the redundant session request to the secondary node, so that the secondary node establishes a corresponding redundant session in the redundant user plane resource.
  • the master node After receiving the RUPR information delivered by the secondary node, the master node determines the number of RUPRs of the secondary node according to the redundant user plane resource information, and generates a redundant session request according to the number of RUPRs of the secondary node.
  • generating a redundant session request according to the redundant user plane resource information includes:
  • the redundant user plane resource information determine the number of redundant user plane resources that the secondary node has; and generate a redundant session request according to the number of redundant user plane resources that the secondary node has.
  • the redundant user plane resource information is not carried in any message sent by the secondary node, it is determined that the number of redundant user plane resources possessed by the secondary node is one.
  • the MN can learn that the SN has one or more redundant user plane resources; if the SN sends all the messages to the MN, none of them For the RUPR information of the SN, the MN defaults that the SN has 1 redundant user plane resource.
  • the primary node sending the redundant session request to the secondary node includes:
  • the master node sends the redundant session request to the secondary node through a secondary node addition request message or a secondary node modification request message.
  • the redundant session request includes: identification information of the redundant session.
  • the identification information of the redundant session is used to identify that the session is a redundant session, for example, for the secondary node to establish a corresponding redundant session in the redundant user plane resource according to the identification information of the redundant session.
  • the redundant session request when it is determined to establish at least two sessions in the redundant user plane resources of the secondary node, the redundant session request further includes: a redundant sequence number value of the redundant session.
  • the secondary node performs the operation on the redundant user plane that matches the redundant serial number value of the redundant session.
  • the corresponding redundant session is established in the resource.
  • generating a redundant session request according to the number of redundant user plane resources possessed by the secondary node includes:
  • the generated redundant session request is used to instruct the secondary node to establish a redundant session in the redundant user plane resources; if the secondary node has If the number of redundant user plane resources is at least two, the generated redundant session request is used to instruct the secondary node to establish at least one redundant session in the redundant user plane resources.
  • the master node can determine the number of RUPRs possessed by the slave node through the RUPR information transmitted by the slave node, and then can establish one or more redundant sessions in the slave node according to the number of RUPRs, ensuring The reliability of redundant sessions also improves the reliability of data transmission in 5G wireless communication technology.
  • the master node after the master node sends the redundant session request to the secondary node, when the secondary node establishes a redundant session corresponding to the redundant session request, it will send the redundant session to the primary node Request a matching response message, and then the master node can receive a response message that matches the redundant session request fed back by the secondary node; wherein, the response message is used to indicate the redundancy corresponding to the redundant session request Whether the session is successfully established.
  • it further includes: when the master node establishes a redundant session, establishing a radio bearer corresponding to the redundant session with the terminal one-to-one.
  • the master node decides to establish a redundant session on its own, after establishing the redundant session, it establishes a radio bearer corresponding to the redundant session with the terminal, and carries the redundant user plane resources through the radio bearer.
  • Business data If the master node decides to establish a redundant session on its own, after establishing the redundant session, it establishes a radio bearer corresponding to the redundant session with the terminal, and carries the redundant user plane resources through the radio bearer.
  • FIG. 8 is a schematic flowchart of a radio bearer establishment method provided by this application. This method can be applied to the case of establishing a radio bearer in a dual-connection and multi-connection architecture. The method may be executed by the radio bearer establishment apparatus provided in the present application, and the radio bearer establishment apparatus may be implemented by software and/or hardware and integrated in the terminal.
  • a radio bearer establishment method includes:
  • S310 According to the instruction of the master node or the secondary node, establish a one-to-one radio bearer corresponding to the redundant session with the primary node or the distribution unit with the secondary node.
  • the terminal establishes a radio bearer with the MN and the SN respectively, and carries the service data of the redundant user plane resource through the radio bearer.
  • the radio bearer established by the terminal and the MN corresponds to the redundant session established by the MN
  • the radio bearer established by the terminal and the SN corresponds to the redundant session established by the SN.
  • the terminal and multiple DUs of the SN establish radio bearers respectively, and carry the service data of the redundant user plane resources through the radio bearers.
  • multiple radio bearers established by the terminal and multiple DUs of the SN correspond to multiple redundant sessions established by the SN respectively.
  • This application provides a method for establishing a radio bearer.
  • a terminal establishes a radio bearer corresponding to a redundant session with the master node or the distribution unit of the slave node according to the instructions of the master node or the slave node.
  • the wireless bearer transmits data services, which improves the reliability of data services.
  • the redundant session established in the secondary node is that the primary node requests the secondary node to establish in redundant user plane resources according to the redundant user plane resource information transmitted by the secondary node.
  • the secondary node generates redundant user plane resource information, and transmits the redundant user plane resource information to the primary node; the primary node receives the redundant user plane resource information of the secondary node transmitted by the secondary node, and according to the redundant user Plane resource information, generate a redundant session request, and send a redundant session request to the secondary node; the secondary node establishes a corresponding redundant session in the redundant user plane resource according to the redundant session request from the primary node; The secondary node sends a response message matching the redundant session request to the MN.
  • the response message includes information related to the success and/or failure of one or more redundant sessions; the primary node receives the information from the secondary node and The redundant session request matching response message.
  • the redundant session established in the secondary node is that the primary node determines the number of redundant user plane resources that the secondary node has according to the redundant user plane resource information, and according to the secondary node A redundant session request is generated from the number of redundant user plane resources, and the secondary node is requested to establish in the redundant user plane resources according to the redundant session request.
  • the redundant session request is sent by the primary node to the secondary node through a secondary node addition request message or a secondary node modification request message.
  • the redundant user plane resource information includes any one of the following:
  • the redundant user plane resource information sent by the SN means that the SN can establish one or more redundant user plane connections, or the SN can establish one or more redundant user plane bearers, or The SN can establish a redundant session with one or more RSN values.
  • the redundant user plane resource information is generated by the secondary node according to the number of redundant user plane resources it has, where the number of redundant user plane resources is:
  • the number of distribution units or, the first set value corresponding to the first target number range to which the number of distribution units belongs; or, the minimum value of the number of distribution units and the number of centralized unit control surfaces; or The second set value corresponding to the second target quantity range to which the minimum value belongs.
  • the secondary node transfers redundant user plane resource information to the primary node through a message sent by the secondary node to the primary node; wherein the message sent by the secondary node to the primary node passes through the primary node To the interface between the secondary node.
  • the message sent by the secondary node to the primary node through the 5G Xn interface includes redundant user plane resource information of the secondary node.
  • the primary node determines the redundant user plane that the secondary node has The number of resources is one.
  • the MN can learn that the SN has one or more redundant user plane resources; if the SN sends all the messages to the MN, none of them For the RUPR information of the SN, the MN defaults that the SN has 1 redundant user plane resource, that is, if the secondary node has 1 RUPR, it may not send RUPR information to the primary node.
  • the primary node defaults to the secondary The number of RUPRs a node has is one.
  • the redundant session request includes: identification information of the redundant session, and the identification information is used by the secondary node to establish a correspondence in redundant user plane resources according to the identification information of the redundant session Redundant sessions.
  • the secondary node After receiving the redundant session request sent by the master node, the secondary node establishes a redundant session corresponding to the redundant session request in RUPR.
  • the redundant session request further includes: the redundant sequence number value of the redundant session
  • the redundancy sequence number value of the redundant session is used by the secondary node to establish a corresponding redundant session in the redundant user plane resource matching the redundancy sequence number value of the redundant session.
  • the secondary node establishes the redundant session in the RUPR matching the redundant sequence number value.
  • the master node generates a redundant session request according to the number of redundant user plane resources possessed by the slave node, including:
  • the redundant session request generated by the primary node is used to instruct the secondary node to establish a redundant session in the redundant user plane resources; If the number of redundant user plane resources possessed by the secondary node is at least two, the redundant session request generated by the primary node is used to instruct the secondary node to establish at least one redundant session in the redundant user plane resources.
  • FIG. 9 is a schematic structural diagram of a redundant session establishment device provided by this application. As shown in FIG. 9, an application provided by an embodiment of this application is The redundant session establishment device in the secondary node may be integrated in the secondary node, and the device includes:
  • the redundant user plane resource information sending module 410 is configured to generate redundant user plane resource information and transfer the redundant user plane resource information to the master node;
  • the redundant session establishment module 420 is configured to generate redundant user plane resource information
  • the redundant session request is to establish a corresponding redundant session in redundant user plane resources, and the redundant session request is a request generated by the master node according to the redundant user plane resource information.
  • the apparatus for establishing a redundant session applied to a secondary node provided in this embodiment is used to implement the method for establishing a redundant session applied to a secondary node as described in the embodiment of this application.
  • the implementation principle and effect of the redundant session establishment device are similar to the redundant session establishment method applied to the secondary node described in the embodiment of the present application, and will not be repeated here.
  • the redundant user plane resource information sending module 410 is configured to determine the quantity of redundant user plane resources, generate redundant user plane resource information according to the quantity of redundant user plane resources, and combine the redundant user plane resources The user plane resource information is passed to the master node.
  • the number of redundant user plane resources is:
  • the number of distribution units or, the first set value corresponding to the first target number range to which the number of distribution units belongs; or, the minimum value of the number of distribution units and the number of centralized unit control surfaces; or The second set value corresponding to the second target quantity range to which the minimum value belongs.
  • the redundant user plane resource information includes any one of the following:
  • the number of redundant user plane connections allowed to be established by the secondary node, the number of redundant user plane bearers allowed to be established by the secondary node, and the redundant sequence number allowed to be established by the secondary node is the number of redundant sessions with a set sequence value.
  • the redundant session request includes: identification information of the redundant session.
  • the redundant session establishment module 420 is configured to establish a corresponding redundant session in the redundant user plane resources according to the identification information of the redundant session in the redundant session request.
  • the redundant session establishment module 420 is configured to establish the redundant session in any redundant user plane resource if it is determined according to the redundant session request that only one redundant session is established in the redundant user plane resource. Redundant sessions.
  • the redundant session request further includes: the redundant sequence number value of the redundant session.
  • the redundancy session establishment module 420 is configured to communicate with the redundancy sequence number of the redundancy session according to the identification information of the redundancy session in the redundancy session request and the redundancy sequence number value of the redundancy session.
  • a corresponding redundant session is established in the redundant user plane resources with matching values.
  • the redundant session request is sent by the primary node through a secondary node addition request message or a secondary node modification request message.
  • the above-mentioned apparatus further includes: a response sending module configured to feed back a response message matching the redundant session request to the master node after establishing a corresponding redundant session in the redundant user plane resource; wherein The response message is used to indicate whether the redundant session corresponding to the redundant session request is successfully established.
  • the redundant user plane resource information sending module 410 is configured to generate redundant user plane resource information, and pass the redundant user plane resource information to the master through a message sent by the secondary node to the master node. Node; wherein the message sent by the secondary node to the primary node is sent through the interface between the primary node and the secondary node.
  • the above apparatus further includes: a radio bearer establishment module configured to establish a radio bearer corresponding to the redundant session with the terminal through at least one distribution unit after establishing a corresponding redundant session in the redundant user plane resources .
  • FIG. 10 is a schematic structural diagram of a redundant session establishment device provided by this application. As shown in FIG. 10, an application provided by an embodiment of this application The redundant session establishment device in the master node may be integrated in the master node, and the device includes:
  • the redundant user plane resource information receiving module 510 is configured to receive redundant user plane resource information of the secondary node transmitted by the secondary node; the redundant session request establishing module 520 is configured to generate the redundant user plane resource information according to the redundant user plane resource information. And send a redundant session request to the secondary node, so that the secondary node establishes a corresponding redundant session in the redundant user plane resources.
  • the redundant session establishment device applied to the master node provided in this embodiment is used to implement the redundant session establishment method applied to the master node as described in the embodiment of this application.
  • the implementation principle and effect of the redundant session establishment apparatus are similar to the redundant session establishment method applied to the master node described in the embodiment of the present application, and will not be repeated here.
  • the redundant session request establishment module 520 includes:
  • the unit for determining the quantity of redundant user plane resources is configured to determine the quantity of redundant user plane resources possessed by the secondary node according to the redundant user plane resource information; the redundant session request generating unit is configured to determine the quantity of redundant user plane resources according to the secondary The number of redundant user plane resources that the node has generates redundant session requests.
  • the redundant session request generating unit is configured to, if the number of redundant user plane resources possessed by the secondary node is one, the generated redundant session request is used to indicate that the secondary node is in the redundant user plane.
  • One redundant session is established in the resources; if the number of redundant user plane resources possessed by the secondary node is at least two, the generated redundant session request is used to instruct the secondary node to establish at least A redundant session.
  • the redundant session request generating unit is further configured to determine the redundant user that the secondary node has if the redundant user plane resource information is not carried in any message sent by the secondary node The number of surface resources is one.
  • the redundant user plane resource information includes any one of the following:
  • the number of redundant user plane connections that the secondary node allows to establish, the number of redundant user plane bearers that the secondary node allows to establish, and the redundant sequence number that the secondary node allows to establish is a redundant session with a set sequence value Quantity.
  • the redundant session request includes: identification information of the redundant session.
  • the redundant session request when it is determined to establish at least two sessions in the redundant user plane resources of the secondary node, the redundant session request further includes: a redundant sequence number value of the redundant session.
  • the above-mentioned apparatus further includes: a response receiving module configured to receive a response message that matches the redundant session request fed back by the secondary node; wherein, the response message is used to indicate communication with the redundant session Whether the redundant session corresponding to the request is successfully established.
  • the redundant session request establishment module 520 is configured to generate a redundant session request according to the redundant user plane resource information, and send it to the secondary node through a secondary node addition request message or a secondary node modification request message The redundant session request enables the secondary node to establish a corresponding redundant session in redundant user plane resources.
  • the redundant user plane resource information receiving module 510 is configured to receive the redundant user plane resource information of the secondary node that is transmitted by the secondary node through a message sent to the primary node; The message of the master node is sent through the interface between the master node and the auxiliary node.
  • FIG. 11 is a schematic structural diagram of an apparatus for establishing a radio bearer provided by this application. As shown in FIG. 11, an apparatus for establishing a radio bearer provided by an embodiment of this application can be integrated In the terminal, the device includes:
  • the radio bearer establishment module 610 is configured to establish a radio bearer corresponding to a redundant session with the master node or the distribution unit of the slave node according to an instruction of the master node or the slave node.
  • the radio bearer establishment apparatus provided in this embodiment is used to implement the radio bearer establishment method described in the embodiment of this application.
  • the implementation principles and effects of the radio bearer establishment apparatus provided in this embodiment are the same as the radio bearer establishment method described in the embodiment of this application. Similar, not repeat them here.
  • the redundant session established in the secondary node is that the primary node requests the secondary node to establish in redundant user plane resources according to the redundant user plane resource information transmitted by the secondary node.
  • the redundant session established in the secondary node is that the primary node determines the number of redundant user plane resources that the secondary node has according to the redundant user plane resource information, and according to the secondary node A redundant session request is generated from the number of redundant user plane resources, and the secondary node is requested to establish in the redundant user plane resources according to the redundant session request.
  • the manner in which the master node generates a redundant session request according to the number of redundant user plane resources possessed by the slave node includes:
  • the redundant session request generated by the primary node is used to instruct the secondary node to establish a redundant session in the redundant user plane resources; If the number of redundant user plane resources possessed by the secondary node is at least two, the redundant session request generated by the primary node is used to instruct the secondary node to establish at least one redundant session in the redundant user plane resources.
  • the primary node determines the redundant user plane that the secondary node has The number of resources is one.
  • the redundant session request includes: identification information of the redundant session, and the identification information is used by the secondary node to establish a correspondence in redundant user plane resources according to the identification information of the redundant session Redundant sessions.
  • the redundant session request further includes: the redundant sequence number value of the redundant session
  • the redundancy sequence number value of the redundant session is used by the secondary node to establish a corresponding redundant session in the redundant user plane resource matching the redundancy sequence number value of the redundant session.
  • the redundant session request is sent by the primary node to the secondary node through a secondary node addition request message or a secondary node modification request message.
  • the redundant user plane resource information includes any one of the following:
  • the number of redundant user plane connections that the secondary node allows to establish, the number of redundant user plane bearers that the secondary node allows to establish, and the redundant sequence number that the secondary node allows to establish is a redundant session with a set sequence value Quantity.
  • the redundant user plane resource information is generated according to the number of redundant user plane resources, where the number of redundant user plane resources is:
  • the number of distribution units or, the first set value corresponding to the first target number range to which the number of distribution units belongs; or, the minimum value of the number of distribution units and the number of centralized unit control surfaces; or The second set value corresponding to the second target quantity range to which the minimum value belongs.
  • FIG. 12 is a schematic structural diagram of a secondary node provided by this application.
  • a secondary node provided by this application includes: one or more processors 710 And storage device 720; the integrated access and backhaul node (Integrated Access and Backhaul Node, IAB) processor 710 may be one or more, in FIG. 12, one processor 710 is taken as an example; the storage device 720 is used to store one Or multiple programs; the one or more programs are executed by the one or more processors 710, so that the one or more processors 710 implement the redundancy applied to the secondary node as described in the embodiments of the present application I session establishment method.
  • IAB Integrated Access and Backhaul Node
  • the processor 710 and the storage device 720 in the auxiliary node may be connected through a bus or in other ways.
  • the connection through a bus is taken as an example.
  • the storage device 720 can be configured to store software programs, computer-executable programs, and modules, such as the program instructions/modules corresponding to the redundant session establishment method applied to the secondary node as described in the embodiments of this application ( For example, the redundant user plane resource information sending module 410 and the redundant session establishing module 420 in the redundant session establishment device applied to the secondary node).
  • the storage device 720 may include a storage program area and a storage data area.
  • the storage program area may store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the device, and the like.
  • the storage device 720 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
  • the storage device 720 may include memories remotely provided with respect to the processor 710, and these remote memories may be connected to the first node through a network. Examples of the aforementioned networks include but are not limited to the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • FIG. 13 is a schematic structural diagram of a master node provided by this application.
  • a master node provided by this application includes: one or more processors 810 And the storage device 820; the processor 810 of the master node may be one or more, and one processor 810 is taken as an example in FIG. 13; the storage device 820 is used to store one or more programs; the one or more programs are The one or more processors 810 execute, so that the one or more processors 810 implement the redundant session establishment method applied to the master node as described in the embodiment of the present application.
  • the processor 810 and the storage device 820 in the master node may be connected through a bus or other methods.
  • the connection through a bus is taken as an example.
  • the storage device 820 can be configured to store software programs, computer-executable programs, and modules, such as the program instructions/modules ( For example, the redundant user plane resource information receiving module 510 and the redundant session request establishing module 520 in the redundant session establishment device applied to the master node).
  • the storage device 820 may include a program storage area and a data storage area.
  • the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the device, and the like.
  • the storage device 820 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
  • the storage device 820 may include memories remotely provided with respect to the processor 810, and these remote memories may be connected to the first node through a network. Examples of the aforementioned networks include but are not limited to the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • FIG. 14 is a schematic structural diagram of a terminal provided in this application.
  • a terminal provided in this application includes: one or more processors 910 and a storage device 920; the processor 910 of the terminal may be one or more, in FIG. 14 a processor 910 is taken as an example; the storage device 920 is used to store one or more programs; the one or more programs are used by the one or The multiple processors 910 execute, so that the one or more processors 910 implement the radio bearer establishment method as described in the embodiment of the present application.
  • the processor 910 and the storage device 920 in the terminal may be connected by a bus or other methods.
  • the connection by a bus is taken as an example.
  • the storage device 920 can be configured to store software programs, computer-executable programs, and modules, such as the program instructions/modules corresponding to the wireless bearer establishment method described in the embodiments of this application (for example, the wireless bearer establishment device The radio bearer establishment module in 610).
  • the storage device 920 may include a program storage area and a data storage area.
  • the program storage area may store an operating system and an application program required for at least one function; the data storage area may store data created according to the use of the device, and the like.
  • the storage device 920 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
  • the storage device 920 may include memories remotely provided with respect to the processor 910, and these remote memories may be connected to the first node through a network. Examples of the aforementioned networks include but are not limited to the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • An embodiment of the present application further provides a storage medium storing a computer program, and when the computer program is executed by a processor, the method for establishing a redundant session applied to a secondary node in any of the embodiments of the present application is implemented Or the redundant session establishment method applied to the master node described in any of the embodiments of this application or the radio bearer establishment method described in any of the embodiments of this application.
  • the redundant session establishment method applied to the secondary node includes:
  • the redundant session request is a request generated by the master node according to the redundant user plane resource information.
  • the redundant session establishment method applied to the master node includes:
  • Receive redundant user plane resource information of the secondary node transmitted by the secondary node ; generate a redundant session request according to the redundant user plane resource information, and send the redundant session request to the secondary node so that the secondary node
  • the node establishes a corresponding redundant session in the redundant user plane resources.
  • the radio bearer establishment method includes:
  • a radio bearer corresponding to the redundant session is established one-to-one with the primary node or the distribution unit of the secondary node.
  • terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicular mobile stations.
  • the various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.
  • the embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware.
  • Computer program instructions can be assembly instructions, instruction set architecture (Instruction Set Architecture, ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages Source code or object code.
  • the block diagram of any logical flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions.
  • the computer program can be stored on the memory.
  • the memory can be of any type suitable for the local technical environment and can be implemented by any suitable data storage technology, such as but not limited to read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc.
  • Computer-readable media may include non-transitory storage media.
  • the data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (ASICs) ), programmable logic devices (Field-Programmable Gate Array, FPGA) and processors based on multi-core processor architecture.
  • DSP Digital Signal Processing
  • ASICs application specific integrated circuits
  • FPGA Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array

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Abstract

本文公开一种冗余会话建立方法及装置、无线承载建立方法及装置、节点、终端、介质。该冗余会话建立方法，包括：生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点；根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话，所述冗余会话请求为所述主节点根据所述冗余用户面资源信息生成的请求。

Description

冗余会话建立方法及装置、无线承载建立方法及装置、节点、终端、介质
本申请要求在2019年08月16日提交中国专利局、申请号为201910759233.2的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通讯领域，例如涉及一种冗余会话建立方法及装置、无线承载建立方法及装置、节点、终端、介质。
背景技术
超可靠、低时延通信(Ultra-Relaible and Low Latency Communication，URLLC)是第五代(5th-Generation，5G)无线通信技术的三大应用场景之一。为提高5G无线通信技术的可靠性，3GPP(The third Generation Partnership Project，第三代合作伙伴计划)标准组织提出了基于双连接的冗余用户面路径的方案。但是，在双连接架构或多连接架构中，MN(Master Node，主节点)对SN(Secondary Node，辅节点)中包括DU(Distributed Unit，分布单元)的数量并不可知，故只能将一个冗余会话建立在该SN上，或者称只能有一个冗余会话的用户数据在该SN上发送。
发明内容
本申请提供一种冗余会话建立方法及装置、无线承载建立方法及装置、节点、终端、介质，以提高5G无线通信技术中的数据传输可靠性。
本申请实施例提供了一种冗余会话建立方法，包括：
生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点；
根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立对应的冗余会话，所述冗余会话请求为所述主节点根据所述冗余用户面资源信息生成的请求。
本申请实施例还提供了一种冗余会话建立方法，包括：
接收辅节点传递的所述辅节点的冗余用户面资源信息；
根据所述冗余用户面资源信息，生成冗余会话请求，并向所述辅节点发送所述冗余会话请求，以使所述辅节点在冗余用户面资源中建立对应的冗余会话。
本申请实施例还提供了一种无线承载建立方法，包括：
根据主节点或辅节点的指示，与所述主节点或与所述辅节点的分布单元建立与冗余会话一一对应的无线承载。
本申请实施例还提供了一种冗余会话建立装置，包括：
冗余用户面资源信息发送模块，设置为生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点；
冗余会话建立模块，设置为根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立对应的冗余会话，所述冗余会话请求为所述主节点根据所述冗余用户面资源信息生成的请求。
本申请实施例还提供了一种冗余会话建立装置，包括：
冗余用户面资源信息接收模块，设置为接收辅节点传递的所述辅节点的冗余用户面资源信息；
冗余会话请求建立模块，设置为根据所述冗余用户面资源信息，生成冗余会话请求，并向所述辅节点发送所述冗余会话请求，以使所述辅节点在冗余用户面资源中建立对应的冗余会话。
本申请实施例还提供了一种无线承载建立装置，包括：
无线承载建立模块，用于根据主节点或辅节点的指示，与所述主节点或与所述辅节点的分布单元建立与冗余会话一一对应的无线承载。
本申请实施例还提供了一种辅节点，包括：
一个或多个处理器；
存储装置，用于存储一个或多个程序；
当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如本申请实施例所述的应用于辅节点的冗余会话建立方法。
本申请实施例还提供了一种主节点，包括：
一个或多个处理器；
存储装置，用于存储一个或多个程序；
当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如本申请实施例所述的应用于主节点的冗余会话建立方法。
本申请实施例还提供了一种终端，包括：
一个或多个处理器；
存储装置，用于存储一个或多个程序；
当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如本申请实施例所述的无线承载建立方法。
本申请实施例还提供了一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现本申请实施例中的任意一种方法。
附图说明
图1为一种双连接网络架构示意图；
图2为一种基于双连接的冗余用户面路径方案的示意图；
图3为一种基于双连接的冗余用户面路径方案的示意图；
图4为一种基于双连接的集中单元-分布单元架构示意图；
图5为本申请提供的一种冗余会话建立方法的流程示意图；
图6为一种集中单元-控制面和集中单元-用户面分离的架构示意图；
图7为本申请提供的一种冗余会话建立方法的流程示意图；
图8为本申请提供的一种无线承载建立方法的流程示意图；
图9为本申请提供的一种冗余会话建立装置的结构示意图；
图10为本申请提供的一种冗余会话建立装置的结构示意图；
图11为本申请提供的一种无线承载建立装置的结构示意图；
图12为本申请提供的辅节点的结构示意图；
图13为本申请提供的主节点的结构示意图；
图14为本申请提供的终端的结构示意图。
具体实施方式
为下文中将结合附图对本申请的实施例进行说明。
在描述本申请提供的实施方式之前，首先对冗余会话进行示例性地解释说明。
移动通信系统包括移动用户设备(User Equipment，UE)和网络(Network)设备，网络设备又包括无线接入网(Radio Access Network，RAN)设备和核心网(Core Network，CN)设备。其中，RAN设备包括：1个或多个小区组(Cell group)，或1个或多个基站，或1个或多个节点B(Node B，NB)。
在5G系统中，CN设备是指5GC(5G Core，5G核心网)设备，包括：AMF (Access and Mobility Management Function，接入和移动管理功能)，UPF(User Plane Function，用户面功能)、SMF(system management function，系统管理功能)等网元。
在双连接(Dual Connectivity，DC)系统中，UE与网络设备建立了2个或2个以上的连接。如图1所示的双连接系统，核心网10(或称核心网的UPF网元)与无线接入网的小区组(Cell group)20和小区组30分别建立了连接。此时，无线接入网包括一个主节点(Master Node，MN)和一个辅节点(Secondary Node，SN)，例如小区组20为MN，小区组30为SN。
URLLC是5G技术的三大应用场景之一。根据3GPP TR23.725，在其解决方法中提出了基于双连接的冗余用户面路径的方案，方案内容如图2所示，具体内容可详见3GPP协议的描述。
如图3所示，用户终端(UE)启动建立2个冗余协议数据单元会话(Redundant Protocol Data Unit Session，Redundant PDU Session)，并为每个会话配置不同的DNN(Data Network Name，数据网络名称)和S-NSSAI(Single-Network Slice Selection Assistant Information，单个网络切片选择辅助信息)组合，分别建立在主基站和辅基站上。系统管理功能1(SMF1)和系统管理功能2(SMF2)决定所述冗余会话能否建立。其中，SMF1和SMF2做出决定的依据是：S-NSSA、DNN、用户授权和本地政策配置等组合。SMF1和SMF2采用RSN(Redundant Sequence Number，冗余序列号)区别所述冗余会话，采用主基站(Master NG-RAN)和辅基站(Secondary NG-RAN)分别发送用户面数据。如图3所述，一个冗余会话的用户面建立在用户面功能1(UPF1)上，另一个冗余会话的用户面建立在在用户面功能2(UPF2)上。其中，本申请中所称的将冗余会话配置或者建立在主基站或者辅基站上，是指该冗余会话的用户数据在该主基站或者辅基站上发送。
CN(如5GC)请求RAN建立冗余会话时，会为此冗余会话携带RSN参数，即：该冗余会话的配置参数中包括RSN参数，并通过CN与RAN之间的控制面接口(如5G的NG接口)发送到RAN(如5G的NG-RAN)。
对于RAN侧的双连接架构，包括MN和SN两个网元节点，冗余会话建立请求是从核心网发送到MN，MN根据冗余会话的RSN参数，将所述冗余会话建立到MN或SN上，例如：MN上建立RSN＝1的冗余会话，SN上建立RSN＝2的冗余会话。
同样地，对于RAN侧的多连接架构，有且只有1个MN，即：一个MN和多个SN，MN可以将不同RSN参数的冗余会话分别建立到不同的RAN节点上，例如：MN上建立RSN＝1的冗余会话，一个SN上建立RSN＝2的冗余会话，又 例如：MN上不建立冗余会话，两个SN上分别建立RSN＝1和RSN＝2的冗余会话。
如图4所示，无线接入网(RAN)侧的基站(gNB)采用CU-DU(Centralized Unit-Dutributed Unit，集中单元-分布单元)架构，一个基站集中单元(gNB Central Unit，gNB CU)下包括一个或多个基站分布单元(gNB Distributed Unit，gNB DU)，图4中以2个基站分布单元为例示出。RAN侧的gNB CU接收到冗余建立请求后，当具有2个gNB DU时，可以将RSN＝1和RSN＝2的会话分别建立到2个gNB DU上，当具有多个gNB DU时，可以将RSN＝1和RSN＝2的会话分别建立到其中的2个gNB DU上，当只具有1个gNB DU时，该RAN节点只能建立RSN＝1或者RSN＝2的冗余会话。
上述的双连接架构、多连接架构或者CU-DU架构中，每个网元(MN或SN或DU)都具有专属于其自身的独立用户面资源。将冗余会话根据RSN分别建立到不同的网元(如MN，SN，DU)，可以提高该冗余会话的可靠性。例如：RSN＝1的冗余会话失败，RSN＝2的冗余会话依然可以正常工作，进而，该冗余会话依然可以正常工作。
在一个示例性实施方式中，图5为本申请提供的一种冗余会话建立方法的流程示意图。该方法可以适用于在双连接和多连接架构中建立冗余会话的情况。该方法可以由本申请提供的应用于辅节点的冗余会话建立装置执行，该冗余会话建立装置可以由软件和/或硬件实现，并集成在辅节点中，辅节点可以指的是无线接入网中的辅基站。
如图5所示，本申请提供的一种冗余会话建立方法，包括S110和S120。
S110、生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点。
冗余用户面资源(Redundant User Plane Resources，RUPR)，指的是建立冗余会话的用户面资源。冗余用户面资源信息，指的是根据辅节点中具备的RUPR数量生成的信息，用于辅节点向主节点指示其具备的RUPR数量。
在一示例中，生成冗余用户面资源信息，包括：确定冗余用户面资源的数量；根据所述冗余用户面资源的数量生成冗余用户面资源信息。
在一示例中，所述冗余用户面资源的数量为：
分布单元的数量；或者，与分布单元的数量所属的第一目标数量范围对应的第一设定数值；或者，分布单元的数量和集中单元控制面的数量中的最小值；或者，与所述最小值所属的第二目标数量范围对应的第二设定数值。
对于采用CU-DU架构的一个RAN网元，如果该网元具有N个DU，理论上该RAN网元可以具有N个RUPR，每个DU上具有1个RUPR。
当RAN节点采用CU-DU架构时，一个RAN节点具有1个CU和多个DU，每个DU具有自身独立的RLC(Radio Link Control，无线链路控制)、MAC(Media Access Control，媒体接入控制)和物理层，也即每个DU具有自身独立的用户面资源。
如图6所示，一个RAN节点仅有1个CU，如果该CU采用CU-CP(CU-Control Plane，CU控制面)和CU-UP(CU-User Plane，CU用户面)分离的架构，则该CU可以具有多个独立的CU-UP。此时，每个CU-UP上都具有自身独立的PDCP(Packet Data Convergence Protocol，分组数据汇聚协议)和SDAP(Service Data Adaptation Protocol，业务数据适应协议)，也即每个CU-UP具有自身独立的用户面资源。
一个RAN节点(如gNB)采用CU-DU架构时候，用户面资源包括：CU上的PDCP和SDAP，DU上的RLC，MAC和物理层。
因此，采用CU-DU架构的RAN节点(如gNB)，确定其具有的RUPR数量的方式可以有如下几种：
(1)在不考虑CU是否采用CU-CP和CU-UP分离的架构，也不考虑CU具有的CU-UP数量时，可以根据节点具有的DU数量确定其具有的RUPR数量，也即RUPR数量＝DU数量。
(2)在不考虑CU是否采用CU-CP和CU-UP分离的架构，也不考虑CU具有的CU-UP数量时，可以根据分布单元的数量所属的第一目标数量范围，将RUPR数量确定为与所属的第一目标数量范围对应的第一设定数值。例如，当DU数量＝1时，RUPR数量＝2；当DU数量≥2时，RUPR数量＝2。
(3)根据CU-UP数量和DU数量，确定RUPR数量为：RUPR数量＝min{CU-UP数量，DU数量}。
(4)根据min{CU-UP数量，DU数量}所属的第二目标数量范围，将RUPR数量确定为与所属的第二目标数量范围对应的第二设定数值。例如，当min{CU-UP数量，DU数量}＝1时，RUPR数量＝1；当min{CU-UP数量，DU数量}≥1时，RUPR数量＝2。
辅节点在根据上述RUPR数量确定方式确定其RUPR数量之后，生成相应的RUPR信息，通过辅节点发送到主节点的消息，传递给主节点。
在一示例中，将所述冗余用户面资源信息传递给主节点，包括：
将冗余用户面资源信息，通过辅节点发送到所述主节点的消息传递给主节点；其中，所述辅节点发送到所述主节点的消息通过所述主节点与所述辅节点之间的接口发送。
例如是，在辅节点通过5G的Xn接口向主节点发送的消息中，包括辅节点的冗余用户面资源信息。
如果辅节点具有的RUPR数量为1个，也可以不向主节点发送RUPR信息，主节点此时默认辅节点具有的RUPR数量为1个。
在一示例中，所述冗余用户面资源信息包括下述任一项：
辅节点允许建立的冗余用户面连接数量，所述辅节点允许建立的冗余用户面承载数量，以及，所述辅节点允许建立的冗余序列号为设定序列值的冗余会话数量。
也即，SN发送的冗余用户面资源信息是指，该SN可以建立1个或多个冗余用户面连接，或者，该SN可以建立1个或多个冗余用户面承载，或者，该SN可以建立1个或多个RSN值的冗余会话。
S120、根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立对应的冗余会话，所述冗余会话请求为所述主节点根据所述冗余用户面资源信息生成的请求。
主节点接收到辅节点传递的RUPR信息之后，根据冗余用户面资源信息确定出所述辅节点具有的RUPR数量，根据所述辅节点具有的RUPR数量，生成冗余会话请求。
在一示例中，所述冗余会话请求是所述主节点通过辅节点增加请求消息(SN Addition Request Message)或者辅节点修改请求消息(SN Modification Request Message)发送的。
在一示例中，所述冗余会话请求中包括：冗余会话的标识信息。其中，冗余会话的标识信息，用于标识该会话是冗余会话，具体用于所述辅节点根据所述冗余会话的标识信息，在冗余用户面资源中建立对应的冗余会话。
辅节点接收到主节点发送的冗余会话请求之后，在RUPR中建立与冗余会话请求对应的冗余会话。
在一示例中，根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立对应的冗余会话，包括：
根据冗余会话请求中冗余会话的标识信息，在冗余用户面资源中建立对应的冗余会话。
在一示例中，根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立对应的冗余会话，包括：
如果根据所述冗余会话请求确定在冗余用户面资源中只建立一个冗余会话，则在任意一个冗余用户面资源中建立所述冗余会话。
如果主节点确定只在辅节点中建立一个冗余会话，则在辅节点中RUPR数量为多个时，辅节点可以在任意一个RUPR中建立这个冗余会话。
在一示例中，在所述主节点确定将至少两个会话建立在辅节点的冗余用户面资源中时，所述冗余会话请求中还包括：冗余会话的冗余序列号值。
其中，所述冗余会话的冗余序列号值用于辅节点在与所述冗余会话的冗余序列号值匹配的冗余用户面资源中建立对应的冗余会话。
在一示例中，根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立对应的冗余会话，包括：
根据冗余会话请求中的冗余会话的标识信息以及冗余会话的冗余序列号值，在与所述冗余会话的冗余序列号值匹配的冗余用户面资源中建立对应的冗余会话。
如果主节点发送的冗余会话请求中包括冗余会话的冗余序列号值，辅节点则将该冗余会话建立在于冗余序列号值匹配的RUPR中。
如果主节点通过RUPR信息确定辅节点具有的RUPR数量为一个，则生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立一个冗余会话；如果主节点通过RUPR信息确定辅节点具有的RUPR数量为至少两个，则生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立至少一个冗余会话。
本申请提供的一种冗余会话建立方法，主节点通过辅节点传递的RUPR信息可以确定辅节点具有的RUPR数量，进而可以根据RUPR数量在辅节点中建立一个或多个冗余会话，保证了冗余会话的可靠性，也提高了5G无线通信技术中的数据传输可靠性。
在本申请中，以多个冗余用户面连接、多个冗余用户面承载、多个RSN值均为“2”个为例进行解释(并非限定，多指的是大于或等于2的数字)。比如：1个RSN值，是指RSN＝1或RSN＝2，多个RSN值是指RSN＝1和RSN2。SN可以建立1个RSN值的冗余会话是指：SN可以建立RSN＝1的冗余会话，或者建立RSN＝2的冗余会话；SN可以建立2个RSN值的冗余会话是指：SN可以建立RSN＝1的冗余会话，也可以建立RSN＝2的冗余会话。
当RUPR数量为1或2时，SN的RUPR信息是指：该SN可以建立1个或2个冗余用户面连接，或者该SN可以建立1个或2个冗余用户面承载，或者该SN可以建立1个或2个RSN值的冗余会话。
一个网元的RUPR数量默认为1，即：该网元上仅能建立1个RSN值(RSN＝1或RSN＝2)的冗余会话。也就是说，当SN的RUPR信息没有通过SN发送到MN的消息进行传递(MN没有通过SN发送的消息获取到RUPR信息)时，MN就默认为该SN的RUPR数量为1。或者说，当SN具有的RUPR数量为1，则该SN无需将RUPR信息通过发送到MN的消息携带。
SN的RUPR信息，可以用RUPR信息＝{1或2}表示，当SN的RUPR信息为1时，则该SN只能建立一个RSN值(RSN＝1或RSN＝2)的冗余会话；当SN的RUPR信息为2，则该SN可以建立1个RSN值(RSN＝1或RSN＝2)或2个RSN值(RSN＝1和RSN＝2)的冗余会话。
SN发送到MN的消息，可以通过MN和SN之间的Xn接口发送。也即，RUPR信息在通过MN和SN之间的Xn接口发送的消息中携带。
MN接收到SN的RUPR信息后，MN即可获知该SN具备的RUPR数量。包括：该SN只可以建立RSN＝1(或RSN＝2)的冗余会话，或者SN可以建立RSN＝1以及RSN＝2的冗余会话。
MN在所述SN上建立1个或多个冗余会话，包括以下情形：
(1)当SN具有1个冗余用户面资源时，MN将一个RSN值(如RSN＝1)的冗余会话配置在MN自身，将另一个RSN值(如RSN＝2)的冗余会话配置在所述SN。
(2)当SN具有2个冗余用户面资源时，MN将一个RSN值(如RSN＝1)的冗余会话配置在MN自身，将另一个RSN值(如RSN＝2)的冗余会话配置在所述SN。SN将RSN＝2的冗余会话建立在与RSN＝2匹配的冗余用户面资源中，或者将RSN＝2的冗余会话建立在任意一个冗余用户面资源中(此时，MN允许SN将该冗余会话建立在任意一个冗余用户面资源中，如冗余会话请求中不包括冗余会话的RSN值)。
(3)当SN具有2个冗余用户面资源时，MN将2个RSN值(如RSN＝1，RSN＝2)的冗余会话均配置在所述SN。SN将RSN＝1的冗余会话建立在与RSN＝1匹配的冗余用户面资源中，将RSN＝2的冗余会话建立在与RSN＝2匹配的冗余用户面资源中。
针对上述情形(1)，由于SN上仅有1个冗余用户面资源，所以SN只能建立一个RSN值的冗余会话；针对上述情形(2)，由于MN上建立一个RSN 值的冗余会话，所以SN上只能建立一个RSN值的冗余会话。因此，这两种情形下，MN请求SN建立一个冗余会话的方法是相同的。
MN获知SN可以建立1个或2个冗余会话，且MN决定其自身建立一个RSN值(如RSN＝1)的冗余会话，并在SN建立另一个RSN值(如RSN＝2)的冗余会话。MN向SN发送冗余会话请求，冗余会话请求中包括：请求建立1个冗余会话的相关信息。其中，请求建立1个冗余会话的相关信息，包括该冗余会话的标识信息，用于标识该会话是冗余会话。所述请求建立1个冗余会话的相关信息，允许所述冗余会话建立在SN任何1个冗余用户面资源中，所述请求建立1个冗余会话的相关信息中不包括冗余会话的RSN值。
SN接收到MN发送的冗余会话请求，冗余会话请求中包括：请求建立1个冗余会话的相关信息。所述请求建立1个冗余会话的相关信息中包括冗余会话的标识信息，则SN将所述冗余会话建立在自身的冗余用户面资源中。
所述请求建立1个冗余会话的相关信息中，包括允许该冗余会话建立在SN的任何1个冗余用户面资源(如不包括冗余会话的RSN值)时，如果SN具有多个(如2个)冗余用户面资源时，SN则可以将所述冗余会话建立在任何一个冗余用户面资源中。
上述情形(3)，由于SN上具有2个冗余用户面资源，所以SN可以建立2个RSN值的冗余会话。
MN获知SN可以建立2个冗余会话，且MN决定在SN建立2个RSN值(即RSN＝1和RSN＝2)的冗余会话。MN向SN发送冗余会话请求，冗余会话请求中包括：请求建立2个冗余会话的相关信息。其中，请求建立2个冗余会话的相关信息，不仅包括冗余会话的标识信息，还包括所述冗余会话的RSN值，(即RSN＝1和RSN＝2)。
SN接收到MN发送的冗余会话请求，冗余会话请求中包括：请求建立2个冗余会话的相关信息。所述请求建立2个冗余会话的相关信息中不仅包括冗余会话的标识信息，还包括冗余会话的RSN值(RSN＝1和RSN＝2)，则SN将所述冗余会话建立在自身的对应该RSN值的冗余用户面资源中，如RSN＝1的冗余会话建立在SN的序号为SN-RUPR-1的冗余用户面资源中，RSN＝2的冗余会话建立在SN的序号为SN-RUPR-2的冗余用户面资源中。
在一示例中，在冗余用户面资源中建立对应的冗余会话之后，还包括：
向所述主节点反馈与所述冗余会话请求匹配的响应消息；其中，所述响应消息用于指示与所述冗余会话请求对应的冗余会话是否建立成功。
SN在冗余用户面资源中建立冗余会话请求对应的冗余会话之后，向MN发 送与所述冗余会话请求匹配的响应消息，响应消息中包括1个或多个冗余会话的建立成功和/或建立失败的相关信息。
在一示例中，在冗余用户面资源中建立对应的冗余会话之后，还包括：
通过至少一个分布单元与终端建立与冗余会话一一对应的无线承载。
在SN建立一个冗余会话的情况下，MN和SN分别与终端建立1个无线承载，并通过所述无线承载承载所述冗余用户面资源的业务数据。MN建立的无线承载与其建立的冗余会话对应，SN建立的无线承载与其建立的冗余会话对应。
在SN建立多个冗余会话的情况下，SN通过其包括的多个DU分别与终端建立多个无线承载，并通过所述无线承载承载所述冗余用户面资源的业务数据。其中，SN建立的多个无线承载分别与SN建立的多个冗余会话一一对应。
在一个示例性实施方式中，图7为本申请提供的一种冗余会话建立方法的流程示意图。该方法可以适用于在双连接和多连接架构中建立冗余会话的情况。该方法可以由本申请提供的应用于主节点的冗余会话建立装置执行，该冗余会话建立装置可以由软件和/或硬件实现，并集成在主节点中，主节点可以指的是无线接入网中的主基站。
如图7所示，本申请提供的一种冗余会话建立方法，包括S210和S220。
S210、接收辅节点传递的所述辅节点的冗余用户面资源信息。
冗余用户面资源信息，指的是根据辅节点中具备的RUPR数量生成的信息，用于辅节点向主节点指示其具备的RUPR数量。
在一示例中，接收辅节点传递的所述辅节点的冗余用户面资源信息，包括：
接收辅节点通过发送到主节点的消息传递的所述辅节点的冗余用户面资源信息；其中，所述辅节点发送到所述主节点的消息通过所述主节点与所述辅节点之间的接口发送。
例如是，在辅节点通过5G的Xn接口向主节点发送的消息中，包括辅节点的冗余用户面资源信息。
辅节点根据其具有的冗余用户面资源的数量生成冗余用户面资源信息。
在一示例中，辅节点的所述冗余用户面资源的数量为：
分布单元的数量；或者，与分布单元的数量所属的第一目标数量范围对应的第一设定数值；或者，分布单元的数量和集中单元控制面的数量中的最小值；或者，与所述最小值所属的第二目标数量范围对应的第二设定数值。
在一示例中，辅节点将所述冗余用户面资源信息传递给主节点，包括：
辅节点将冗余用户面资源信息，通过辅节点发送到所述主节点的消息传递给主节点；其中，所述辅节点发送到所述主节点的消息通过所述主节点与所述辅节点之间的接口发送。
例如是，在辅节点通过5G的Xn接口向主节点发送的消息中，包括辅节点的冗余用户面资源信息。
如果辅节点具有的RUPR数量为1个，也可以不向主节点发送RUPR信息，主节点此时默认辅节点具有的RUPR数量为1个。
在一示例中，所述冗余用户面资源信息，包括下述任一项：
所述辅节点允许建立的冗余用户面连接数量，所述辅节点允许建立的冗余用户面承载数量，以及，所述辅节点允许建立的冗余序列号为设定序列值的冗余会话数量。
也即，SN发送的冗余用户面资源信息是指，该SN可以建立1个或多个冗余用户面连接，或者，该SN可以建立1个或多个冗余用户面承载，或者，该SN可以建立1个或多个RSN值的冗余会话。
S220、根据所述冗余用户面资源信息，生成冗余会话请求，并向所述辅节点发送冗余会话请求，以使所述辅节点在冗余用户面资源中建立对应的冗余会话。
主节点接收到辅节点传递的RUPR信息之后，根据冗余用户面资源信息确定出所述辅节点具有的RUPR数量，根据所述辅节点具有的RUPR数量，生成冗余会话请求。
在一示例中，根据所述冗余用户面资源信息，生成冗余会话请求，包括：
根据所述冗余用户面资源信息，确定所述辅节点具有的冗余用户面资源的数量；根据所述辅节点具有的冗余用户面资源的数量，生成冗余会话请求。
在一示例中，如果在所述辅节点发送的任一消息中都未携带所述冗余用户面资源信息，则确定所述辅节点具有的冗余用户面资源的数量为1个。
如果MN接收来自SN的消息，消息中携带所述SN的RUPR信息，MN则可以获知所述SN有1个或多个冗余用户面资源；如果SN发送到MN的所有消息中，都没有携带SN的RUPR信息，MN则默认所述SN有1个冗余用户面资源。
在一示例中，主节点向所述辅节点发送所述冗余会话请求，包括：
主节点通过辅节点增加请求消息或者辅节点修改请求消息向所述辅节点发 送所述冗余会话请求。
在一示例中，所述冗余会话请求中包括：冗余会话的标识信息。其中，冗余会话的标识信息，用于标识该会话是冗余会话，例如用于所述辅节点根据所述冗余会话的标识信息，在冗余用户面资源中建立对应的冗余会话。
在一示例中，在确定将至少两个会话建立在所述辅节点的冗余用户面资源中时，所述冗余会话请求中还包括：冗余会话的冗余序列号值。
在一示例中，辅节点根据冗余会话请求中的冗余会话的标识信息以及冗余会话的冗余序列号值，在与所述冗余会话的冗余序列号值匹配的冗余用户面资源中建立对应的冗余会话。
在一示例中，根据所述辅节点具有的冗余用户面资源的数量，生成冗余会话请求，包括：
如果所述辅节点具有的冗余用户面资源的数量为一个，则生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立一个冗余会话；如果所述辅节点具有的冗余用户面资源的数量为至少两个，则生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立至少一个冗余会话。
本申请提供的一种冗余会话建立方法，主节点通过辅节点传递的RUPR信息可以确定辅节点具有的RUPR数量，进而可以根据RUPR数量在辅节点中建立一个或多个冗余会话，保证了冗余会话的可靠性，也提高了5G无线通信技术中的数据传输可靠性。
在一示例中，主节点在向所述辅节点发送所述冗余会话请求之后，当辅节点在建立与冗余会话请求对应的冗余会话之后，会向主节点发送与所述冗余会话请求匹配的响应消息，进而主节点可以接收到所述辅节点反馈的与所述冗余会话请求匹配的响应消息；其中，所述响应消息用于指示与所述冗余会话请求对应的冗余会话是否建立成功。
在一示例中，还包括：在主节点建立冗余会话时，与终端建立与冗余会话一一对应的无线承载。
如果主节点决定在其自身建立一个冗余会话，则在建立冗余会话之后，与终端建立一个与该冗余会话对应的无线承载，并通过所述无线承载承载所述冗余用户面资源的业务数据。
本实施方式未解释之处请参见前述实施方式，在此不再赘述。
在一个示例性实施方式中，图8为本申请提供的一种无线承载建立方法的 流程示意图。该方法可以适用于在双连接和多连接架构中建立无线承载的情况。该方法可以由本申请提供的无线承载建立装置执行，该无线承载建立装置可以由软件和/或硬件实现，并集成在终端中。
如图8所示，本申请提供的一种无线承载建立方法，包括：
S310、根据主节点或辅节点的指示，与所述主节点或与所述辅节点的分布单元建立与冗余会话一一对应的无线承载。
在MN和SN分别建立一个冗余会话的情况下，终端与MN和SN分别建立1个无线承载，并通过所述无线承载承载所述冗余用户面资源的业务数据。其中，终端与MN建立的无线承载与MN建立的冗余会话对应，终端与SN建立的无线承载与SN建立的冗余会话对应。
在SN建立多个冗余会话的情况下，终端与SN的多个DU分别建立无线承载，并通过所述无线承载承载所述冗余用户面资源的业务数据。其中，终端与与SN的多个DU建立的多个无线承载分别与SN建立的多个冗余会话一一对应。
本申请提供了一种无线承载建立方法，终端根据主节点或辅节点的指示，与所述主节点或与所述辅节点的分布单元建立与冗余会话一一对应的无线承载，通过所述无线承载传输数据业务，提高了数据业务的可靠性。
在一示例中，所述辅节点中建立的冗余会话是，所述主节点根据所述辅节点传递的冗余用户面资源信息请求所述辅节点在冗余用户面资源中建立的。
辅节点生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点；主节点接收辅节点传递的所述辅节点的冗余用户面资源信息，根据所述冗余用户面资源信息，生成冗余会话请求，并向所述辅节点发送冗余会话请求；辅节点根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立对应的冗余会话；辅节点向MN发送与所述冗余会话请求匹配的响应消息，响应消息中包括1个或多个冗余会话的建立成功和/或建立失败的相关信息；主节点接收辅节点发送的与所述冗余会话请求匹配的响应消息。
在一示例中，所述辅节点中建立的冗余会话是，所述主节点根据所述冗余用户面资源信息确定所述辅节点具有的冗余用户面资源的数量，根据所述辅节点具有的冗余用户面资源的数量生成冗余会话请求，根据所述冗余会话请求请求所述辅节点在冗余用户面资源中建立的。
在一示例中，所述冗余会话请求通过辅节点增加请求消息或者辅节点修改请求消息由所述主节点向所述辅节点发送。
在一示例中，所述冗余用户面资源信息包括下述任一项：
辅节点允许建立的冗余用户面连接数量，所述辅节点允许建立的冗余用户面承载数量，以及，所述辅节点允许建立的冗余序列号为设定序列值的冗余会话数量。
也即，SN发送的冗余用户面资源信息是指，该SN可以建立1个或多个冗余用户面连接，或者，该SN可以建立1个或多个冗余用户面承载，或者，该SN可以建立1个或多个RSN值的冗余会话。
在一示例中，所述冗余用户面资源信息是辅节点根据其具有的所述冗余用户面资源的数量生成的，其中，所述冗余用户面资源的数量为：
分布单元的数量；或者，与分布单元的数量所属的第一目标数量范围对应的第一设定数值；或者，分布单元的数量和集中单元控制面的数量中的最小值；或者，与所述最小值所属的第二目标数量范围对应的第二设定数值。
在一示例中，辅节点将冗余用户面资源信息，通过辅节点发送到所述主节点的消息传递给主节点；其中，所述辅节点发送到所述主节点的消息通过所述主节点与所述辅节点之间的接口发送。
例如是，在辅节点通过5G的Xn接口向主节点发送的消息中，包括辅节点的冗余用户面资源信息。
在一示例中，如果在所述辅节点发送给所述主节点的任一消息中都未携带所述冗余用户面资源信息，则所述主节点确定所述辅节点具有的冗余用户面资源的数量为1个。
如果MN接收来自SN的消息，消息中携带所述SN的RUPR信息，MN则可以获知所述SN有1个或多个冗余用户面资源；如果SN发送到MN的所有消息中，都没有携带SN的RUPR信息，MN则默认所述SN有1个冗余用户面资源，也即，如果辅节点具有的RUPR数量为1个，也可以不向主节点发送RUPR信息，主节点此时默认辅节点具有的RUPR数量为1个。
在一示例中，所述冗余会话请求中包括：冗余会话的标识信息，所述标识信息用于所述辅节点根据所述冗余会话的标识信息，在冗余用户面资源中建立对应的冗余会话。
辅节点接收到主节点发送的冗余会话请求之后，在RUPR中建立与冗余会话请求对应的冗余会话。
在一示例中，在所述主节点确定将至少两个会话建立在所述辅节点的冗余用户面资源中时，所述冗余会话请求中还包括：冗余会话的冗余序列号值，所述冗余会话的冗余序列号值用于所述辅节点在与所述冗余会话的冗余序列号值匹配的冗余用户面资源中建立对应的冗余会话。
如果主节点发送的冗余会话请求中包括冗余会话的冗余序列号值，辅节点则将该冗余会话建立在于冗余序列号值匹配的RUPR中。
在一示例中，所述主节点根据所述辅节点具有的冗余用户面资源的数量生成冗余会话请求，包括：
如果所述辅节点具有的冗余用户面资源的数量为一个，则所述主节点生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立一个冗余会话；如果所述辅节点具有的冗余用户面资源的数量为至少两个，则所述主节点生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立至少一个冗余会话。
本实施方式未解释之处请参见前述实施方式，在此不再赘述。
本实施例还提供了应用于辅节点的冗余会话建立装置，图9为本申请提供的一种冗余会话建立装置的结构示意图，如图9所示，本申请实施例提供的一种应用于辅节点中的冗余会话建立装置，可以集成在辅节点中，该装置包括：
冗余用户面资源信息发送模块410，设置为生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点；冗余会话建立模块420，设置为根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立对应的冗余会话，所述冗余会话请求为所述主节点根据所述冗余用户面资源信息生成的请求。
本实施例提供的应用于辅节点中的冗余会话建立装置用于实现如本申请实施例所述的应用于辅节点中的冗余会话建立方法，本实施例提供的应用于辅节点中的冗余会话建立装置实现原理和效果与本申请实施例所述的应用于辅节点中的冗余会话建立方法类似，此处不再赘述。
在一示例中，冗余用户面资源信息发送模块410，设置为确定冗余用户面资源的数量，根据所述冗余用户面资源的数量生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点。
在一示例中，所述冗余用户面资源的数量为：
分布单元的数量；或者，与分布单元的数量所属的第一目标数量范围对应的第一设定数值；或者，分布单元的数量和集中单元控制面的数量中的最小值；或者，与所述最小值所属的第二目标数量范围对应的第二设定数值。
在一示例中，所述冗余用户面资源信息包括下述任一项：
辅节点允许建立的冗余用户面连接数量，所述辅节点允许建立的冗余用户面承载数量，以及，所述辅节点允许建立的冗余序列号为设定序列值的冗余会 话数量。
在一示例中，所述冗余会话请求中包括：冗余会话的标识信息。
在一示例中，冗余会话建立模块420，设置为根据冗余会话请求中冗余会话的标识信息，在冗余用户面资源中建立对应的冗余会话。
在一示例中，冗余会话建立模块420，设置为如果根据所述冗余会话请求确定在冗余用户面资源中只建立一个冗余会话，则在任意一个冗余用户面资源中建立所述冗余会话。
在一示例中，在所述主节点确定将至少两个会话建立在辅节点的冗余用户面资源中时，所述冗余会话请求中还包括：冗余会话的冗余序列号值。
在一示例中，冗余会话建立模块420，设置为根据冗余会话请求中的冗余会话的标识信息以及冗余会话的冗余序列号值，在与所述冗余会话的冗余序列号值匹配的冗余用户面资源中建立对应的冗余会话。
在一示例中，所述冗余会话请求是所述主节点通过辅节点增加请求消息或者辅节点修改请求消息发送的。
在一示例中，上述装置还包括：响应发送模块，设置为在冗余用户面资源中建立对应的冗余会话之后，向所述主节点反馈与所述冗余会话请求匹配的响应消息；其中，所述响应消息用于指示与所述冗余会话请求对应的冗余会话是否建立成功。
在一示例中，冗余用户面资源信息发送模块410，设置为生成冗余用户面资源信息，并将所述冗余用户面资源信息，通过辅节点发送到所述主节点的消息传递给主节点；其中，所述辅节点发送到所述主节点的消息通过所述主节点与所述辅节点之间的接口发送。
在一示例中，上述装置还包括：无线承载建立模块，设置为在冗余用户面资源中建立对应的冗余会话之后，通过至少一个分布单元与终端建立与冗余会话一一对应的无线承载。
本实施例还提供了应用于主节点的冗余会话建立装置，图10为本申请提供的一种冗余会话建立装置的结构示意图，如图10所示，本申请实施例提供的一种应用于主节点中的冗余会话建立装置，可以集成在主节点中，该装置包括：
冗余用户面资源信息接收模块510，设置为接收辅节点传递的所述辅节点的冗余用户面资源信息；冗余会话请求建立模块520，设置为根据所述冗余用户面资源信息，生成冗余会话请求，并向所述辅节点发送冗余会话请求，以使所述 辅节点在冗余用户面资源中建立对应的冗余会话。
本实施例提供的应用于主节点中的冗余会话建立装置用于实现如本申请实施例所述的应用于主节点中的冗余会话建立方法，本实施例提供的应用于主节点中的冗余会话建立装置实现原理和效果与本申请实施例所述的应用于主节点中的冗余会话建立方法类似，此处不再赘述。
在一示例中，冗余会话请求建立模块520，包括：
冗余用户面资源的数量确定单元，设置为根据所述冗余用户面资源信息，确定所述辅节点具有的冗余用户面资源的数量；冗余会话请求生成单元，设置为根据所述辅节点具有的冗余用户面资源的数量，生成冗余会话请求。
在一示例中，冗余会话请求生成单元，设置为如果所述辅节点具有的冗余用户面资源的数量为一个，则生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立一个冗余会话；如果所述辅节点具有的冗余用户面资源的数量为至少两个，则生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立至少一个冗余会话。
在一示例中，冗余会话请求生成单元，还设置为如果在所述辅节点发送的任一消息中都未携带所述冗余用户面资源信息，则确定所述辅节点具有的冗余用户面资源的数量为1个。
在一示例中，所述冗余用户面资源信息，包括下述任一项：
所述辅节点允许建立的冗余用户面连接数量，所述辅节点允许建立的冗余用户面承载数量，以及，所述辅节点允许建立的冗余序列号为设定序列值的冗余会话数量。
在一示例中，所述冗余会话请求中包括：冗余会话的标识信息。
在一示例中，在确定将至少两个会话建立在所述辅节点的冗余用户面资源中时，所述冗余会话请求中还包括：冗余会话的冗余序列号值。
在一示例中，上述装置还包括：响应接收模块，设置为接收所述辅节点反馈的与所述冗余会话请求匹配的响应消息；其中，所述响应消息用于指示与所述冗余会话请求对应的冗余会话是否建立成功。
在一示例中，冗余会话请求建立模块520，设置为根据所述冗余用户面资源信息，生成冗余会话请求，并通过辅节点增加请求消息或者辅节点修改请求消息向所述辅节点发送所述冗余会话请求，以使所述辅节点在冗余用户面资源中建立对应的冗余会话。
在一示例中，冗余用户面资源信息接收模块510，设置为接收辅节点通过发 送到主节点的消息传递的所述辅节点的冗余用户面资源信息；其中，所述辅节点发送到所述主节点的消息通过所述主节点与所述辅节点之间的接口发送。
本实施例还提供了的无线承载建立装置，图11为本申请提供的一种无线承载建立装置的结构示意图，如图11所示，本申请实施例提供的一种无线承载建立装置，可以集成在终端中，该装置包括：
无线承载建立模块610，用于根据主节点或辅节点的指示，与所述主节点或与所述辅节点的分布单元建立与冗余会话一一对应的无线承载。
本实施例提供的无线承载建立装置用于实现如本申请实施例所述的无线承载建立方法，本实施例提供的无线承载建立装置实现原理和效果与本申请实施例所述的无线承载建立方法类似，此处不再赘述。
在一示例中，所述辅节点中建立的冗余会话是，所述主节点根据所述辅节点传递的冗余用户面资源信息请求所述辅节点在冗余用户面资源中建立的。
在一示例中，所述辅节点中建立的冗余会话是，所述主节点根据所述冗余用户面资源信息确定所述辅节点具有的冗余用户面资源的数量，根据所述辅节点具有的冗余用户面资源的数量生成冗余会话请求，根据所述冗余会话请求请求所述辅节点在冗余用户面资源中建立的。
在一示例中，所述主节点根据所述辅节点具有的冗余用户面资源的数量生成冗余会话请求的方式，包括：
如果所述辅节点具有的冗余用户面资源的数量为一个，则所述主节点生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立一个冗余会话；如果所述辅节点具有的冗余用户面资源的数量为至少两个，则所述主节点生成的冗余会话请求用于指示所述辅节点在冗余用户面资源中建立至少一个冗余会话。
在一示例中，如果在所述辅节点发送给所述主节点的任一消息中都未携带所述冗余用户面资源信息，则所述主节点确定所述辅节点具有的冗余用户面资源的数量为1个。
在一示例中，所述冗余会话请求中包括：冗余会话的标识信息，所述标识信息用于所述辅节点根据所述冗余会话的标识信息，在冗余用户面资源中建立对应的冗余会话。
在一示例中，在所述主节点确定将至少两个会话建立在所述辅节点的冗余用户面资源中时，所述冗余会话请求中还包括：冗余会话的冗余序列号值，所 述冗余会话的冗余序列号值用于所述辅节点在与所述冗余会话的冗余序列号值匹配的冗余用户面资源中建立对应的冗余会话。
在一示例中，所述冗余会话请求通过辅节点增加请求消息或者辅节点修改请求消息由所述主节点向所述辅节点发送。
在一示例中，所述冗余用户面资源信息包括下述任一项：
所述辅节点允许建立的冗余用户面连接数量，所述辅节点允许建立的冗余用户面承载数量，以及，所述辅节点允许建立的冗余序列号为设定序列值的冗余会话数量。
在一示例中，所述冗余用户面资源信息是根据所述冗余用户面资源的数量生成的，其中，所述冗余用户面资源的数量为：
分布单元的数量；或者，与分布单元的数量所属的第一目标数量范围对应的第一设定数值；或者，分布单元的数量和集中单元控制面的数量中的最小值；或者，与所述最小值所属的第二目标数量范围对应的第二设定数值。
本申请实施例提供了一种辅节点，图12为本申请提供的一种辅节点的结构示意图，如图12所示，本申请提供的一种辅节点，包括：一个或多个处理器710和存储装置720；该集成接入和回程节点(Integrated Access and Backhaul Node，IAB)的处理器710可以是一个或多个，图12中以一个处理器710为例；存储装置720用于存储一个或多个程序；所述一个或多个程序被所述一个或多个处理器710执行，使得所述一个或多个处理器710实现如本申请实施例中所述的应用于辅节点的冗余会话建立方法。
辅节点中的处理器710、存储装置720可以通过总线或其他方式连接，图12中以通过总线连接为例。
存储装置720作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请实施例所述应用于辅节点的冗余会话建立方法对应的程序指令/模块(例如，应用于辅节点的冗余会话建立装置中的冗余用户面资源信息发送模块410和冗余会话建立模块420)。存储装置720可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据设备的使用所创建的数据等。此外，存储装置720可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储装置720可包括相对于处理器710远程设置的存储器，这些远程存储器可以通过网络连接至第一节点。上述网络的实例包括但不限于互联网、 企业内部网、局域网、移动通信网及其组合。
本申请实施例提供了一种主节点，图13为本申请提供的一种主节点的结构示意图，如图13所示，本申请提供的一种主节点，包括：一个或多个处理器810和存储装置820；该主节点的处理器810可以是一个或多个，图13中以一个处理器810为例；存储装置820用于存储一个或多个程序；所述一个或多个程序被所述一个或多个处理器810执行，使得所述一个或多个处理器810实现如本申请实施例中所述的应用于主节点的冗余会话建立方法。
主节点中的处理器810、存储装置820可以通过总线或其他方式连接，图13中以通过总线连接为例。
存储装置820作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请实施例所述应用于主节点的冗余会话建立方法对应的程序指令/模块(例如，应用于主节点的冗余会话建立装置中的冗余用户面资源信息接收模块510和冗余会话请求建立模块520)。存储装置820可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据设备的使用所创建的数据等。此外，存储装置820可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储装置820可包括相对于处理器810远程设置的存储器，这些远程存储器可以通过网络连接至第一节点。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
本申请实施例提供了一种终端，图14为本申请提供的一种终端的结构示意图，如图14所示，本申请提供的一种终端，包括：一个或多个处理器910和存储装置920；该终端的处理器910可以是一个或多个，图14中以一个处理器910为例；存储装置920用于存储一个或多个程序；所述一个或多个程序被所述一个或多个处理器910执行，使得所述一个或多个处理器910实现如本申请实施例中所述的无线承载建立方法。
终端中的处理器910、存储装置920可以通过总线或其他方式连接，图14中以通过总线连接为例。
存储装置920作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请实施例所述无线承载建立方法对应的程序指令/模块(例如，无线承载建立装置中的无线承载建立模块610)。存储装置 920可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据设备的使用所创建的数据等。此外，存储装置920可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储装置920可包括相对于处理器910远程设置的存储器，这些远程存储器可以通过网络连接至第一节点。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
本申请实施例还提供一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现本申请实施例中任一所述的应用于辅节点的冗余会话建立方法或本申请实施例中任一所述的应用于主节点的冗余会话建立方法或本申请实施例中任一所述的无线承载建立方法。
应用于辅节点的冗余会话建立方法，包括：
生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点；根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立对应的冗余会话，所述冗余会话请求为所述主节点根据所述冗余用户面资源信息生成的请求。
应用于主节点的冗余会话建立方法，包括：
接收辅节点传递的所述辅节点的冗余用户面资源信息；根据所述冗余用户面资源信息，生成冗余会话请求，并向所述辅节点发送冗余会话请求，以使所述辅节点在冗余用户面资源中建立对应的冗余会话。
无线承载建立方法，包括：
根据主节点或辅节点的指示，与所述主节点或与所述辅节点的分布单元建立与冗余会话一一对应的无线承载。
术语终端涵盖任何适合类型的无线用户设备，例如移动电话、便携数据处理装置、便携网络浏览器或车载移动台。
一般来说，本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其任何组合中实现。例如，一些方面可以被实现在硬件中，而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中，尽管本申请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现，例如在处理器实体中，或者通过硬件，或者通过软件和硬件的组合。计算 机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture，ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(Read-Only Memory，ROM)、随机访问存储器(Random Access Memory，RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc，DVD)或光盘(Compact Disk，CD))等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processing，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field-Programmable Gate Array，FPGA)以及基于多核处理器架构的处理器。

Claims (40)

  1. 一种冗余会话建立方法，包括：
    生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点；
    根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话，所述冗余会话请求为所述主节点根据所述冗余用户面资源信息生成的请求。
  2. 根据权利要求1所述的方法，其中，所述生成冗余用户面资源信息，包括：
    确定所述冗余用户面资源的数量；
    根据所述冗余用户面资源的数量生成所述冗余用户面资源信息。
  3. 根据权利要求2所述的方法，其中，所述冗余用户面资源的数量为以下之一：
    分布单元的数量；
    与分布单元的数量所属的第一目标数量范围对应的第一设定数值；
    分布单元的数量和集中单元控制面的数量中的最小值；
    与分布单元的数量和集中单元控制面的数量中的最小值所属的第二目标数量范围对应的第二设定数值。
  4. 根据权利要求1所述的方法，其中，所述冗余用户面资源信息包括以下之一：
    辅节点允许建立的冗余用户面连接数量，辅节点允许建立的冗余用户面承载数量，以及，辅节点允许建立的冗余序列号为设定序列值的冗余会话数量。
  5. 根据权利要求1所述的方法，其中，所述冗余会话请求中包括：冗余会话的标识信息。
  6. 根据权利要求5所述的方法，其中，所述根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话，包括：
    根据所述冗余会话请求中冗余会话的标识信息，在所述冗余用户面资源中建立与所述冗余会话请求对应的冗余会话。
  7. 根据权利要求6所述的方法，其中，所述根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话，包括：
    在根据所述冗余会话请求确定在所述冗余用户面资源中只建立一个冗余会话，且所述冗余用户面资源的数量为多个的情况下，在多个冗余用户面资源中 的一个冗余用户面资源中建立所述冗余会话。
  8. 根据权利要求5所述的方法，其中，在所述主节点确定将至少两个冗余会话建立在辅节点的冗余用户面资源中的情况下，所述冗余会话请求中还包括：冗余会话的冗余序列号值。
  9. 根据权利要求8所述的方法，其中，所述根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话，包括：
    根据所述冗余会话请求中的冗余会话的标识信息以及冗余会话的冗余序列号值，在与所述冗余会话的冗余序列号值匹配的冗余用户面资源中建立与所述冗余会话请求对应的冗余会话。
  10. 根据权利要求1所述的方法，其中，所述冗余会话请求是所述主节点通过辅节点增加请求消息或者辅节点修改请求消息发送的。
  11. 根据权利要求1所述的方法，在所述在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话之后，还包括：
    向所述主节点反馈与所述冗余会话请求匹配的响应消息；其中，所述响应消息用于指示与所述冗余会话请求对应的冗余会话是否建立成功。
  12. 根据权利要求1所述的方法，其中，所述将所述冗余用户面资源信息传递给主节点，包括：
    将所述冗余用户面资源信息，通过辅节点发送到所述主节点的消息传递给所述主节点；其中，所述辅节点发送到所述主节点的消息通过所述主节点与所述辅节点之间的接口发送。
  13. 根据权利要求1所述的方法，在所述在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话之后，还包括：
    通过至少一个分布单元与终端建立与所述冗余会话一一对应的无线承载。
  14. 一种冗余会话建立方法，包括：
    接收辅节点传递的所述辅节点的冗余用户面资源信息；
    根据所述冗余用户面资源信息，生成冗余会话请求，并向所述辅节点发送所述冗余会话请求，以使所述辅节点在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话。
  15. 根据权利要求14所述的方法，其中，所述根据所述冗余用户面资源信息，生成冗余会话请求，包括：
    根据所述冗余用户面资源信息，确定所述辅节点具有的冗余用户面资源的 数量；
    根据所述辅节点具有的冗余用户面资源的数量，生成所述冗余会话请求。
  16. 根据权利要求15所述的方法，其中，所述根据所述辅节点具有的冗余用户面资源的数量，生成所述冗余会话请求，包括：
    在所述辅节点具有的冗余用户面资源的数量为一个的情况下，生成的所述冗余会话请求用于指示所述辅节点在所述冗余用户面资源中建立一个冗余会话；
    在所述辅节点具有的冗余用户面资源的数量为至少两个的情况下，生成的所述冗余会话请求用于指示所述辅节点在所述冗余用户面资源中建立至少一个冗余会话。
  17. 根据权利要求16所述的方法，还包括：
    在所述辅节点发送的全部消息中都未携带所述冗余用户面资源信息的情况下，确定所述辅节点具有的冗余用户面资源的数量为1个。
  18. 根据权利要求14所述的方法，其中，所述冗余用户面资源信息，包括以下之一：
    所述辅节点允许建立的冗余用户面连接数量，所述辅节点允许建立的冗余用户面承载数量，以及，所述辅节点允许建立的冗余序列号为设定序列值的冗余会话数量。
  19. 根据权利要求14所述的方法，其中，所述冗余会话请求中包括：冗余会话的标识信息。
  20. 根据权利要求19所述的方法，其中，在确定将至少两个冗余会话建立在所述辅节点的冗余用户面资源中的情况下，所述冗余会话请求中还包括：冗余会话的冗余序列号值。
  21. 根据权利要求14所述的方法，在所述向所述辅节点发送所述冗余会话请求之后，还包括：
    接收所述辅节点反馈的与所述冗余会话请求匹配的响应消息；其中，所述响应消息用于指示与所述冗余会话请求对应的冗余会话是否建立成功。
  22. 根据权利要求14所述的方法，其中，所述向所述辅节点发送所述冗余会话请求，包括：
    通过辅节点增加请求消息或者辅节点修改请求消息向所述辅节点发送所述冗余会话请求。
  23. 根据权利要求14所述的方法，其中，所述接收辅节点传递的所述辅节 点的冗余用户面资源信息，包括：
    接收所述辅节点通过发送到主节点的消息传递的所述辅节点的冗余用户面资源信息；其中，所述辅节点发送到所述主节点的消息通过所述主节点与所述辅节点之间的接口发送。
  24. 一种无线承载建立方法，包括：
    根据主节点或辅节点的指示，与所述主节点或与所述辅节点的分布单元建立与冗余会话一一对应的无线承载。
  25. 根据权利要求24所述的方法，其中，所述辅节点中建立的冗余会话是，所述主节点根据所述辅节点传递的冗余用户面资源信息请求所述辅节点在冗余用户面资源中建立的。
  26. 根据权利要求25所述的方法，其中，所述辅节点中建立的冗余会话是，所述主节点根据所述冗余用户面资源信息确定所述辅节点具有的冗余用户面资源的数量，根据所述辅节点具有的冗余用户面资源的数量生成冗余会话请求，根据所述冗余会话请求请求所述辅节点在所述冗余用户面资源中建立的。
  27. 根据权利要求26所述的方法，其中，所述主节点根据所述辅节点具有的冗余用户面资源的数量生成冗余会话请求，包括：
    在所述辅节点具有的冗余用户面资源的数量为一个的情况下，所述主节点生成的冗余会话请求用于指示所述辅节点在所述冗余用户面资源中建立一个冗余会话；
    在所述辅节点具有的冗余用户面资源的数量为至少两个的情况下，所述主节点生成的冗余会话请求用于指示所述辅节点在所述冗余用户面资源中建立至少一个冗余会话。
  28. 根据权利要求27所述的方法，还包括：
    在所述辅节点发送给所述主节点的全部消息中都未携带所述冗余用户面资源信息的情况下，所述主节点确定所述辅节点具有的冗余用户面资源的数量为1个。
  29. 根据权利要求26所述的方法，其中，所述冗余会话请求中包括：冗余会话的标识信息，所述标识信息用于所述辅节点根据所述冗余会话的标识信息，在所述冗余用户面资源中建立与所述冗余会话请求对应的冗余会话。
  30. 根据权利要求29所述的方法，其中，在所述主节点确定将至少两个冗余会话建立在所述辅节点的冗余用户面资源中的情况下，所述冗余会话请求中还包括：冗余会话的冗余序列号值，所述冗余会话的冗余序列号值用于所述辅 节点在与所述冗余会话的冗余序列号值匹配的冗余用户面资源中建立与所述冗余会话请求对应的冗余会话。
  31. 根据权利要求26所述方法，其中，所述冗余会话请求通过辅节点增加请求消息或者辅节点修改请求消息由所述主节点向所述辅节点发送。
  32. 根据权利要求25所述的方法，其中，所述冗余用户面资源信息包括以下之一：
    所述辅节点允许建立的冗余用户面连接数量，所述辅节点允许建立的冗余用户面承载数量，以及，所述辅节点允许建立的冗余序列号为设定序列值的冗余会话数量。
  33. 根据权利要求25所述的方法，其中，所述冗余用户面资源信息是根据所述冗余用户面资源的数量生成的，其中，所述冗余用户面资源的数量为以下之一：
    分布单元的数量；
    与分布单元的数量所属的第一目标数量范围对应的第一设定数值；
    分布单元的数量和集中单元控制面的数量中的最小值；
    与分布单元的数量和集中单元控制面的数量中的最小值所属的第二目标数量范围对应的第二设定数值。
  34. 一种冗余会话建立装置，包括：
    冗余用户面资源信息发送模块，设置为生成冗余用户面资源信息，并将所述冗余用户面资源信息传递给主节点；
    冗余会话建立模块，设置为根据来自所述主节点的冗余会话请求，在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话，所述冗余会话请求为所述主节点根据所述冗余用户面资源信息生成的请求。
  35. 一种冗余会话建立装置，包括：
    冗余用户面资源信息接收模块，设置为接收辅节点传递的所述辅节点的冗余用户面资源信息；
    冗余会话请求建立模块，设置为根据所述冗余用户面资源信息，生成冗余会话请求，并向所述辅节点发送所述冗余会话请求，以使所述辅节点在冗余用户面资源中建立与所述冗余会话请求对应的冗余会话。
  36. 一种无线承载建立装置，包括：
    无线承载建立模块，设置为根据主节点或辅节点的指示，与所述主节点或 与所述辅节点的分布单元建立与冗余会话一一对应的无线承载。
  37. 一种辅节点，包括：
    至少一个处理器；
    存储装置，设置为存储至少一个程序；
    当所述至少一个程序被所述至少一个处理器执行，使得所述至少一个处理器实现如权利要求1-13中任一项所述的冗余会话建立方法。
  38. 一种主节点，包括：
    至少一个处理器；
    存储装置，设置为存储至少一个程序；
    当所述至少一个程序被所述至少一个处理器执行，使得所述至少一个处理器实现如权利要求14-23中任一项所述的冗余会话建立方法。
  39. 一种终端，包括：
    至少一个处理器；
    存储装置，设置为存储至少一个程序；
    当所述至少一个程序被所述至少一个处理器执行，使得所述至少一个处理器实现如权利要求24-33中任一项所述的无线承载建立方法。
  40. 一种存储介质，存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1-13中任一项所述的冗余会话建立方法，或者，实现权利要求14-23中任一项所述的冗余会话建立方法，或者，实现权利要求24-33中任一项所述的无线承载建立方法。
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