WO2019029740A1 - 一种偶联管理的方法和网络节点 - Google Patents

一种偶联管理的方法和网络节点 Download PDF

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Publication number
WO2019029740A1
WO2019029740A1 PCT/CN2018/100112 CN2018100112W WO2019029740A1 WO 2019029740 A1 WO2019029740 A1 WO 2019029740A1 CN 2018100112 W CN2018100112 W CN 2018100112W WO 2019029740 A1 WO2019029740 A1 WO 2019029740A1
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Prior art keywords
coupling
network node
interface
message
coupled
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PCT/CN2018/100112
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English (en)
French (fr)
Inventor
王瑞
戴明增
曾清海
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华为技术有限公司
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Priority to EP18843887.3A priority Critical patent/EP3570491B1/en
Publication of WO2019029740A1 publication Critical patent/WO2019029740A1/zh
Priority to US16/584,288 priority patent/US20200022195A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0895—Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to a method and a network node for coupling management.
  • the communication protocol of the 4th Generation Mobile Communication Technology (4G) stipulates that the access network 20 (also referred to as Evolved Universal Terrestrial Radio Access Network, E- UTRAN), for example, a base station (eNodeB, eNB) and a core network control plane entity 10 (also known as an Evolved Packet Core (EPC), for example, a Mobility Management Entity (MME) and Only the Stream Control Transmission Protocol (SCTP) coupling can be established on the S1-MME interface (such as S1 shown in FIG. 2) established between the user plane entity S-GW for transmitting control information. Association), the so-called SCTP coupling is the connection between two SCTP endpoints (such as the access network and the core network).
  • EPC Evolved Packet Core
  • MME Mobility Management Entity
  • SCTP Stream Control Transmission Protocol
  • the initial establishment process of the S1-MME control plane interface is: the eNB initiates a S1setup process of a Radio Network Layer (RNL) to the MME that establishes the connection, thereby triggering a Transport Network Layer (TNL). Establishment of SCTP coupling. This is followed by the establishment of TNL.
  • RNL Radio Network Layer
  • TNL Transport Network Layer
  • the eNB initializes an S1 interface to each MME node in the pool area to which it belongs.
  • the MME node list in the pool area and an initial corresponding remote IP address can be directly configured by the eNB during network deployment.
  • the eNB then initiates TNL setup with this IP address.
  • the S1setup process is completed, the S1-MME control plane interface is available.
  • the core network and the access network may adopt Network Functions Virtualization (NFV), etc.
  • Technology such as core network control plane entities in the 5G network architecture (eg, Access and Mobility Management Function (AMF)) and access network functional entities (eg, Next Radio Base Station (New Radio Node, That is, gNB), ng-eNB (eNB capable of connecting to the 5G core network) may also dynamically expand or migrate.
  • AMF Access and Mobility Management Function
  • ng-eNB eNB capable of connecting to the 5G core network
  • ng-eNB eNB capable of connecting to the 5G core network
  • SCTP couplings need to be established on one interface, but in the conventional technology, SCTP coupling is usually managed by the address used to establish SCTP coupling. Therefore, when multiple SCTP couplings are included on one interface, the signaling overhead is bound to increase.
  • the application provides a method and network node for coupling management to reduce signaling overhead.
  • the present application provides a method for coupling management, including: a first network node establishes a first coupling with a second network node for a first interface, where the first interface is a first network node and a connection interface between the two network nodes; the first network node is a first coupling associated with the first identifier, and the first identifier is used to identify the first coupling.
  • the embodiment of the present invention provides a method for coupling management.
  • the first network node is associated with the first identifier that is established on the first interface, so that in the subsequent management process of the first coupling, only Pointing out the first identity of the first coupling, rather than establishing a first coupled TNL address (eg, multiple sets of IP addresses and port numbers) to indicate the first coupling, since establishing the first coupled TNL address typically accounts for
  • the number of bits is large, and the number of bits occupied by the first identifier is usually smaller than the number of bits occupied by the first coupled TNL address, so when there are multiple couplings on the first interface and multiple couplings need to be managed Can save signaling overhead.
  • the first network node establishes a first coupling with the second network node on the first interface, including: the first network node is established between the first interface and the second network node
  • the first coupling includes: the first network node establishes a first coupling with the second network node on the first interface according to the configured address of the second network node, and the first coupling Union as the first coupling.
  • the first network node establishes a first coupling on the first interface according to the configured TNL address, and associates the first identifier by the first coupling, so that it can be managed in a subsequent process.
  • the first network node establishes a first coupling with the second network node for the first interface, and the first network node establishes a first coupling for the first interface according to the pre-configuration table.
  • the pre-configuration table includes at least one of an address for establishing a first coupling and a first identity associated with the address.
  • the first identifier associated with the address may be used as the first identifier of the first coupling, or the first identifier may be assigned by the first network node to the first coupling.
  • the first network node when the first network node establishes the first coupling, the first interface already has a second coupling, and the first network node establishes a first network interface with the second network node.
  • a first coupling between the first network node receiving, on the second coupling, a first coupled list sent by the second network node, the first coupled list including At least one of a first coupled address and a first identifier associated with the address; the first network node establishing a second network with the first interface according to the first coupled list
  • the first coupling between the nodes when the first network node establishes the first coupling, the first interface already has a second coupling, and the second coupling is the first coupling established on the first interface,
  • the second coupling is coupled to one of a plurality of couplings on the first interface, the second coupling being a coupling that uniquely transmits common signaling on the first interface, the first network node being first Establishing a first coupling between the interface and the second network node, including:
  • first coupling after having a second coupling (eg, primary coupling) on the first interface such that there are multiple pairs on the first interface between the first network node and the second network node (eg, the first coupling and the second coupling), such that during the dynamic expansion or migration of the first network node and the second network node, the first network node and the second network may be shared by the established multiple couplings
  • the load of the nodes meets the needs of future mobile communication networks.
  • the first network node receives the first message sent by the second network node, where the first message carries the identifier that is released and coupled, and the first message is used to indicate that the first network node releases the released even The coupling associated with the identity of the union.
  • the first network node can perform a release operation on the coupling managed by the release coupled signature based on the release coupled signature to manage the coupling.
  • the method provided by the present application further includes: a first network node receiving a second message sent by the second network node, the second message carrying a third coupled identifier, the second The message is used to indicate that the first network node associates a third coupling associated with the third coupled identity as a primary coupling, and the primary coupling is used to transmit common signaling of the first interface.
  • the first network node receives the third message sent by the second network node, where the third message includes a second coupled list, where the second coupled list includes at least one first identifier
  • the at least one first identifier is used to indicate that the first network node uses the coupling of the at least one first identifier association to send or receive a special interface message (the special interface message includes any one of the following messages: initial UE message And a HO request message, a triangular redirection message and a path switch request message, or the at least one first identifier is used to indicate that the first network node uses the coupling of the at least one first identity association as a candidate primary coupling.
  • the first network node receives a fourth message of the third coupled list sent by the second network node, where the third coupled list includes at least one first address and the at least one first a first identifier associated with each of the first addresses in the address, the at least one first address being used by the first network node to establish a fourth coupling for the first interface, and the fourth coupling is used for sending or Receive special interface messages or use as a candidate primary coupling.
  • the method provided by the present application further includes: acquiring, by the first network node, an association relationship between the user equipment UE and the fifth coupling, where the association relationship is used to indicate that the first network node is in the first Transmitting, on the fifth coupling, UE-related signaling of the UE, where the fifth coupling is a coupling on the first interface, the association relationship includes at least one of the following information: an identifier of the UE a relationship between the fifth coupled second identifier and a relationship between an identifier of the UE and an address used to establish the fifth coupling.
  • the first network node can transmit the relevant signaling of the UE on a coupling (eg, a fifth coupling) associated with the UE.
  • the first network node acquires the association relationship between the user equipment UE and the fifth coupling
  • the method includes: the first network node receiving, by the second network node, the UE and the fifth And the first network node receives the UE-related signaling of the UE on the fifth coupling, and acquires an association relationship between the UE and the fifth coupling; or The first network node receives a fifth message sent by the third network node, where the fifth message is used to indicate that the UE switches to the first network node, and the fifth message includes a second address, where The second address is an address used to establish the fifth coupling.
  • the first network node can determine the coupling associated with the UE based on the handover request message, such that when the UE switches to the first network node, the first network node can prepare resources for the UE.
  • the method includes: the first network node according to the association relationship between the UE and the fifth coupling, The fifth coupling is established.
  • the method includes: the first network node storing the association relationship between the UE and the fifth coupling In the coupling list.
  • the subsequent management of the coupling is facilitated by storing the association of the coupling with the UE in a coupled list.
  • an embodiment of the present invention provides a method for coupling management, including: sending a first coupling list to a first network node, where the first coupling list includes an address for establishing a first coupling and At least one of the first identifiers associated with the address, the first interface is a connection interface between the first network node and the second network node, and the first network node establishes the first When coupled, the first interface already has a second coupling, the second coupling being a coupling on the first interface for transmitting common signaling.
  • the second network node sends a second message to the first network node, where the second message carries an identifier that is released and coupled, the first message is used to indicate the first network.
  • the node releases the coupling associated with the release coupled signature.
  • the second network node sends a third message to the first network node, where the third message carries a third coupled identifier, and the second message is used to indicate the first network
  • the node associates a third coupling associated with the third coupled identifier as a primary coupling for transmitting common signaling of the first interface.
  • the method provided by the embodiment of the present invention further includes: the second network node sends a fourth message to the first network node, where the fourth message includes a second coupled list, the second The coupled list includes at least one first identifier, the at least one first identifier is used to instruct the first network node to use the coupling of the at least one first identity association to send or receive a special interface message, or The at least one first identifier is used to indicate that the first network node uses the coupling of the at least one first identity association as a candidate primary coupling.
  • the method provided by the embodiment of the present invention further includes: the second network node sends a fifth message to the first network node, where the fifth message includes a third coupled list, the third The coupled list includes at least one first address and a first identifier associated with each of the at least one first address, the at least one first address being used by the first network node as the first
  • the interface establishes a fourth coupling for transmitting or receiving a special interface message or for use as a candidate primary coupling.
  • the method provided by the embodiment of the present invention further includes: the second network node sending, to the first network node, an association relationship between the UE and the fifth coupling, where the association relationship is used to indicate the a network node transmitting UE-related signaling of the UE on the fifth coupling, the fifth coupling being a coupling on a first interface, the association relationship comprising at least one of the following information: And a relationship between the identifier of the UE and the fifth coupled second identifier, and a relationship between the identifier of the UE and an address used to establish the fifth coupling.
  • the present application provides a coupling management apparatus that can implement the coupling management method described in the first aspect or any of the possible designs of the first aspect.
  • the coupling managed device can be a base station or a core network control plane entity (eg, AMF).
  • the coupling management device may also be a chip applied to a base station or a core network control plane entity, and the foregoing method may be implemented by software, hardware, or by executing corresponding software through hardware.
  • the coupling management device can include a processor and a memory.
  • the processor is configured to support the coupling management device to perform the corresponding function of the coupling management method described in the first aspect or any one of the possible aspects of the first aspect.
  • the memory is for coupling with a processor that holds the necessary programs (instructions) and data for the coupled management device.
  • the coupling management device may further include a communication interface for supporting communication between the coupling management device and other network elements.
  • the communication interface can be a transceiver.
  • the coupling management device can include an establishing unit and an associated unit.
  • the establishing unit is configured to: establish a first coupling with the second network node for the first interface, where the first interface is a connection interface between the first network node and the second network node
  • an associating unit configured to associate a first identifier with the first coupling, the first identifier being used to identify the first coupling.
  • the first interface may be a CU-DU interface or an NG interface.
  • the establishing unit is configured to establish the first coupling for the first interface according to the pre-configuration table, where the pre-configuration table includes an address for establishing the first coupling and At least one of the first identifiers associated with the address.
  • the receiving unit when the first network node establishes the first coupling, is configured to receive, on the second coupling, a first coupled list sent by the second network node, where The first coupling list includes at least one of an address for establishing the first coupling and a first identifier associated with the address; an establishing unit, configured to use, according to the first coupled list, The first interface establishes the first coupling with the second network node.
  • the receiving unit is further configured to receive a first message sent by the second network node, where the first message carries an identifier that is released and coupled, and the first message is used to indicate the The first network node releases the coupling associated with the release coupled signature.
  • the receiving unit is further configured to receive a second message sent by the second network node, where the second message carries a third coupled identifier, and the second message is used to indicate the
  • the first network node associates a third coupling associated with the third coupled identity as a primary coupling, the primary coupling being used to transmit common signaling of the first interface.
  • the receiving unit is further configured to receive a third message sent by the second network node, where the third message includes a second coupled list, and the second coupled list includes at least one a first identifier, the at least one first identifier is used to indicate that the first network node uses the coupling of the at least one first identifier association to send or receive a special interface message, or the at least one first identifier is used by A coupling indicating that the first network node associates the at least one first identity is used as a candidate primary coupling.
  • the receiving unit is configured to receive a fourth message sent by the second network node, where the fourth message includes a third coupled list, and the third coupled list includes at least one first An address and a first identifier associated with each of the at least one first address, the at least one first address being used by the first network node to establish a fourth coupling for the first interface,
  • the fourth coupling is used to send or receive a special interface message (the special interface message includes any one of the following messages: initial UE message, HO request message, triangular redirection message and path switch request message) or as a candidate primary coupling.
  • the device for coupling management further includes: an acquiring unit, configured to acquire an association relationship between the user equipment UE and the fifth coupling, where the association relationship is used to indicate that the first network node is in the Transmitting, on the fifth coupling, UE-related signaling of the UE, where the fifth coupling is a coupling on the first interface, the association relationship includes at least one of the following information: the UE And identifying a relationship between the second identity coupled to the fifth identity, and a relationship between an identity of the UE and an address used to establish the fifth coupling.
  • the receiving unit is configured to receive an association between the UE and the fifth coupling that is sent by the second network node, so that the acquiring unit acquires an association between the UE and the fifth coupling.
  • the acquiring unit is configured to: acquire the UE-related signaling of the UE on the fifth coupling, and acquire an association relationship between the UE and the fifth coupling; or, a receiving unit, And a fifth message sent by the third network node, where the fifth message is used to indicate that the UE is handed over to the first network node, the fifth message includes a second address, and the second address is used Establishing the fifth coupled address.
  • a unit is established for establishing the fifth coupling according to the association relationship between the UE and the fifth coupling.
  • the association relationship between the UE and the fifth coupling is stored in a coupled list.
  • the present application provides a coupling management apparatus that can implement the coupling management method described in any one of the possible aspects of the second aspect or the second aspect.
  • the coupling managed device can be a base station or a core network control plane entity (e.g., AMF).
  • the coupling management device may also be a chip applied to a base station or a core network control plane entity, and the foregoing method may be implemented by software, hardware, or by executing corresponding software through hardware.
  • the coupling management device can include a processor and a memory.
  • the processor is configured to support the coupling management device to perform the corresponding function in the method of coupling management described in any one of the possible aspects of the second aspect or the second aspect above.
  • the memory is for coupling with a processor that holds the necessary programs (instructions) and data for the coupled management device.
  • the coupling management device may further include a communication interface for supporting communication between the coupling management device and other network elements.
  • the communication interface can be a transceiver.
  • the coupling management device may include: a sending unit, configured to send, by using the second coupling, a first coupling list to the first network node, where the first coupling list includes At least one of a first coupled address and a first identity associated with the address, the second coupling being a coupling on the first interface for transmitting common signaling.
  • the sending unit is further configured to send a second message to the first network node, where the second message carries an identifier that is released and coupled, and the first message is used to indicate The first network node releases the coupling associated with the release coupled signature.
  • the sending unit is further configured to send a third message to the first network node, where the third message carries a third coupled identifier, and the second message is used to indicate
  • the first network node associates a third coupling associated with the third coupled identifier as a primary coupling, and the primary coupling is used to transmit common signaling of the first interface.
  • the sending unit is further configured to send a fourth message to the first network node, where the fourth message includes a second coupled list, and the second coupled list includes at least one first And the at least one first identifier is used to indicate that the first network node associates the at least one first identity association with a special interface message, or the at least one first identifier is used to indicate The first network node uses the coupling associated with the at least one first identity as a candidate primary coupling.
  • the sending unit is further configured to send a fifth message to the first network node, where the fifth message includes a third coupled list, and the third coupled list includes at least one first An address and a first identifier associated with each of the at least one first address, the at least one first address being used by the first network node to establish a fourth coupling for the first interface,
  • the fourth coupling is used to send or receive a special interface message or as a candidate primary coupling.
  • the sending unit is further configured to send, to the first network node, an association relationship between the UE and the fifth coupling, where the association relationship is used to indicate that the first network node is in the fifth Coupling the UE related signaling that sends the UE, the fifth coupling is a coupling on the first interface, and the association relationship includes at least one of the following information: the identifier and the location of the UE And a relationship between the fifth coupled second identifier and a relationship between the identifier of the UE and an address used to establish the fifth coupling.
  • the present application provides a method for coupling management, which is applied to a first network node, where the first network node includes a transport layer processing unit and a radio layer processing unit, and the transport layer processing unit and the radio layer processing
  • the unit is used on the first interface control plane
  • the first interface is a connection interface between the first network node and the second network node
  • the first interface has multiple couplings
  • the node stores a first coupled list, the first coupled list including the plurality of coupled related information
  • the method comprising: the wireless layer processing unit receiving the first message sent by the transport layer processing unit,
  • the first message includes at least one of the first coupled identifier and an address for establishing the first coupling, the first message being used to indicate that the first coupling has a transmission fault;
  • the first coupling is coupled to one of the plurality of couplings;
  • the wireless layer processing unit deletes the first coupled related information from the first coupled list according to the first message
  • Related information includes the following At least one of the information:
  • the first coupled list is configured to record at least one of the UEs associated with each coupling, and each of the coupled associated identifiers, such that the first network node receives the message from the opposite side to the first coupling management.
  • the coupling associated with the coupled identifier can be indexed from the first coupled list according to the coupled identifier and managed (eg, deleted, released, used as other couplings, associated with the UE, etc.), And determining, according to the identifier of the UE, related signaling for transmitting the UE.
  • the signaling overhead can be reduced compared to the addresses carried in the prior art for establishing coupling.
  • the method provided by the embodiment of the present invention further includes: the wireless layer processing unit determines that the first coupling is a primary coupling of the first interface; or the first coupling is Defining a unique coupling in the first coupling list, the wireless layer processing unit determines that the first interface fails, and the primary coupling is used to transmit common signaling of the first interface.
  • the method provided by the embodiment of the present invention further includes: the wireless layer processing unit sends a second message to the opposite side radio layer processing unit, where the first message is used to indicate the opposite side radio layer processing unit Deleting the first coupling from a second coupling list having at least the first coupled related information, the opposite side wireless layer processing unit being located in the second network On the node.
  • the wireless layer processing unit sends a second message to the opposite side radio layer processing unit, where the first message is used to indicate the opposite side radio layer processing unit Deleting the first coupling from a second coupling list having at least the first coupled related information, the opposite side wireless layer processing unit being located in the second network On the node.
  • the method provided by the embodiment of the present invention further includes: the radio layer processing unit deletes the association relationship between the first coupling and the target user equipment UE, where the target UE is the at least one UE associated with the first coupling. .
  • the radio layer processing unit deletes the association relationship between the first coupling and the target user equipment UE, where the target UE is the at least one UE associated with the first coupling.
  • the method provided by the embodiment of the present invention further includes: when receiving the relevant signaling of the target UE, the radio layer processing unit associates the third coupling with the target UE, and the third coupling is the first There is a coupling on the interface.
  • the embodiment of the present invention provides a method for coupling management, which is applied to a first network node, where the first network node includes a transport layer processing unit and a radio layer processing unit, and the method provided by the embodiment of the present invention includes:
  • the layer processing unit detects a plurality of coupled communication states on the first interface, the first interface is a connection interface between the first network node and the second network node;
  • the transport layer processing unit is present in detecting multiple couplings
  • the first coupling has a transmission failure, and the first coupling is fed back to the wireless layer processing unit with a transmission failure.
  • the transport layer processing unit detects that there is a first coupled transmission fault in the multiple couplings, and feeds back to the wireless layer processing unit that the first coupling has a transmission fault, including The transport layer processing unit detects that there is a first coupled transmission fault in the plurality of couplings, and the transport layer processing unit transmits the first message including the first coupled address or the first coupled identifier to the wireless layer processing unit The first message is used to feed back the first coupling with a transmission failure.
  • the method provided by the embodiment of the present invention further includes: the transport layer processing unit detects that multiple couplings have transmission faults, and feeds back to the wireless layer processing unit that multiple couplings have transmission faults.
  • the present application provides a coupling management apparatus that can implement the coupling management method described in any one of the possible aspects of the fifth aspect or the fifth aspect.
  • the coupling managed device can be a base station or a core network control plane entity (eg, AMF).
  • the coupling management device may also be a chip applied to a base station or a core network control plane entity, and the foregoing method may be implemented by software, hardware, or by executing corresponding software through hardware.
  • the coupling management device can include a processor and a memory.
  • the processor is configured to support the coupling management device to perform the corresponding function in the method of coupling management described in any of the possible aspects of the fifth aspect or the second aspect above.
  • the memory is for coupling with a processor that holds the necessary programs (instructions) and data for the coupled management device.
  • the coupling management device may further include a communication interface for supporting communication between the coupling management device and other network elements.
  • the communication interface can be a transceiver.
  • the present application provides a coupling management apparatus, which is applied to a first network node, including a transport layer processing unit and a radio layer processing unit, where the transport layer processing unit and the radio layer processing unit are used.
  • the first interface is a connection interface between the first network node and the second network node, where the first interface has multiple couplings, and the first network node stores There is a first coupled list, the first coupled list including the plurality of coupled related information, wherein a wireless layer processing unit is configured to receive a first message sent by the transport layer processing unit, The first message includes at least one of the first coupled identifier and an address for establishing the first coupling, the first message being used to indicate that the first coupling has a transmission failure; a first coupling is coupled to one of the plurality of couplings; and a wireless layer processing unit for deleting the first coupled correlation from the first coupled list based on the first message Information, the related information includes At least one information: the identity of the coupling, the coupling
  • the wireless layer processing unit is further configured to determine that the first coupling is a primary coupling of the first interface; or the first coupling is the first coupling A unique coupling in the list, the wireless layer processing unit determines that the first interface fails, and the primary coupling is used to transmit common signaling of the first interface.
  • the radio layer processing unit is further configured to send a second message to the opposite radio layer processing unit, where the first message is used to indicate that the opposite radio layer processing unit is to be the first
  • the coupling is removed from the second coupled list, the second coupled list having at least the first coupled related information, and the opposite side wireless layer processing unit being located on the second network node.
  • the radio layer processing unit is further configured to delete the association relationship between the first coupling and the target user equipment UE, where the target UE is the at least one UE associated with the first coupling.
  • the radio layer processing unit is further configured to: when the related signaling of the target UE is received through the communication interface, associate the third coupling with the target UE, and the third coupling is performed on the first interface. Have a coupling.
  • the present application provides a coupling management apparatus that can implement the coupling management method described in any one of the possible aspects of the sixth aspect or the sixth aspect.
  • the device for the coupling management may be a base station, or may be a core network control plane entity (for example, AMF), or may be a chip applied to the base station and the core network control plane entity, and may be implemented by software, hardware, or the like. Or implement the above method by executing corresponding software through hardware.
  • the coupling management device can include a processor and a memory.
  • the processor is configured to support the coupling management device to perform the corresponding function in the method of coupling management described in any one of the possible aspects of the sixth aspect or the sixth aspect above.
  • the memory is for coupling with a processor that holds the necessary programs (instructions) and data for the coupled management device.
  • the coupling management device may further include a communication interface for supporting communication between the coupling management device and other network elements.
  • the communication interface can be a transceiver.
  • the coupling management apparatus may include: a transport layer processing unit and a radio layer processing unit, wherein the transport layer processing unit is configured to detect a plurality of coupled communication states on the first interface
  • the first interface is a connection interface between the first network node and the second network node; the transport layer processing unit is further configured to: when the processor detects that the first coupling has a transmission fault, the wireless layer The processing unit feeds back the first coupling with a transmission fault.
  • the transport layer processing unit is further configured to: when detecting that there is a first coupled transmission fault in the multiple couplings, send a first message to the wireless layer processing unit, where the first message includes the first message The coupled address or the first coupled identifier, the first message is used to feed back the first coupling with a transmission fault.
  • the transport layer processing unit is also used to detect transmission failures when multiple couplings are detected, and to transmit feedback to the wireless layer processing unit for multiple couplings.
  • a ninth aspect an embodiment of the present invention provides a computer readable storage medium, where a computer program is stored, and when the program runs on a network node, the first aspect to any one of the possible aspects of the first aspect is The described method of coupling management is performed.
  • an embodiment of the present invention provides a computer readable storage medium, where a computer program is stored, and when the program runs on a network node, any possible design of the second aspect to the second aspect is implemented.
  • the described method of coupling management is performed.
  • an embodiment of the present invention provides a computer readable storage medium, where a computer program is stored, and when the program runs on a network node, any possible design of the fifth aspect to the fifth aspect is made.
  • the described method of coupling management is performed.
  • an embodiment of the present invention provides a computer readable storage medium, where a computer program is stored, and when the program runs on a network node, any possible design of the sixth aspect to the sixth aspect is made.
  • the described method of coupling management is performed.
  • the embodiment of the present invention provides a computer program product, when it is run on a network node, causing the network node to perform the coupling management described in any one of the foregoing first aspect to the first aspect.
  • the embodiment of the present invention provides a computer program product, when it is run on a network node, causing the network node to perform the coupling management described in any one of the foregoing second aspect to the second aspect.
  • the embodiment of the present invention provides a computer program product, when it is running on a network node, causing the network node to perform the coupling described in any one of the fifth aspect to the fifth aspect. Management method.
  • the embodiment of the present invention provides a computer program product, when the network node is running on a network node, causing the network node to perform the method of coupling management described in any one of the sixth to sixth aspects.
  • the embodiment of the present application provides a chip, the chip includes a processor and an interface circuit, the interface circuit is coupled to the processor, and the processor is configured to run a computer program or an instruction to implement the first aspect or the first aspect.
  • Interface circuitry is used to communicate with other modules external to the chip.
  • the embodiment of the present application provides a chip, the chip includes a processor and an interface circuit, the interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the second aspect or the second aspect.
  • the interface circuit is for communicating with other modules than the chip.
  • the embodiment of the present application provides a chip, the chip includes a processor and an interface circuit, the interface circuit is coupled to the processor, and the processor is configured to run a computer program or an instruction to implement the fifth aspect or the fifth aspect.
  • the interface circuit is for communicating with other modules than the chip.
  • the embodiment of the present application provides a chip, where the chip includes a processor and an interface circuit, the interface circuit is coupled to a processor, and the processor is configured to run a computer program or an instruction to implement the sixth aspect or the sixth aspect.
  • the interface circuit is for communicating with other modules than the chip.
  • the chip provided in the embodiment of the present application further includes a memory for storing a computer program or an instruction.
  • FIG. 1 is a schematic diagram of an LTE network architecture provided in the prior art
  • FIG. 3 is a schematic diagram 1 of a network architecture according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram 1 of a protocol stack according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram 2 of a network architecture according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram 2 of a protocol stack according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic flowchart 1 of a method for coupling management according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart 2 of a method for coupling management according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart 3 of a method for coupling management according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart 4 of a method for coupling management according to an embodiment of the present invention.
  • FIG. 11 is a schematic flowchart 5 of a method for coupling management according to an embodiment of the present disclosure.
  • FIG. 12 is a scenario applied to a method according to an embodiment of the present disclosure.
  • FIG. 13 is another scenario applied by the method according to an embodiment of the present invention.
  • FIG. 14 is a schematic flowchart diagram of another method for coupling management according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a first network node according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of another first network node according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of still another first network node according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of a second network node according to an embodiment of the present disclosure.
  • FIG. 19 is a schematic structural diagram of another second network node according to an embodiment of the present disclosure.
  • FIG. 20 is a schematic structural diagram of still another second network node according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic structural diagram of still another first network node according to an embodiment of the present invention.
  • first, second, and the like in this application are only used to distinguish different objects, and the order is not limited.
  • first coupling and the second coupling are merely for distinguishing between different couplings and are not limited in their order.
  • FIG. 3 shows a system architecture diagram provided by an embodiment of the present invention, including: a core network 30 (for example, a 5G core network (5GC) in FIG. 3)
  • the access network 40 (for example, as shown in FIG. 3 is a 5G radio access network (New Radio Access Network, New RAN)).
  • the core network 30 includes one or more core network control plane entities and a core network user plane entity.
  • Access network 40 includes one or more access network entities.
  • the core network control plane entity may be: a mobility management network element (for example, an access and mobility management function (AMF) network element) and a core network user plane entity may be a user plane function (User Plane Function, UPF) network element.
  • AMF access and mobility management function
  • UPF User Plane Function
  • the core network control plane entity may further include a session management function (SMF) network element.
  • SMS session management function
  • the access network entity includes one or more base stations (e.g., gNB 401, gNB 402, and ng-eNB 403).
  • the interface between the AMF and the gNB or the ng-eNB is called an NG interface.
  • the control plane of the NG interface can be called an NG control plane (NG-C), where one NG- Multiple SCTP couplings can be established on the C interface to implement interface expansion and load balancing.
  • the interface between any two gNBs is the Xn interface.
  • FIG. 4 shows an NG interface control plane protocol stack, including a transport network layer (TNL) and a radio network layer (RNL).
  • the TNL includes a data link layer (DLL), a physical layer (Physical lay), and an IP layer.
  • DLL data link layer
  • Physical lay Physical lay
  • IP layer IP layer
  • SCTP Stream Control Transmission Protocol
  • the application layer signaling protocol adopted by RNL is called the NG Application Protocol (NGAP).
  • NGAP contains two types of messages, one is UE-associated signalling and the other is common signalling.
  • the UE related message may be used for the process of the session management, the mobility management, and the context management of the UE.
  • the common signaling may be used for interface management, configuration update of the base station or the core network device, and delivery of the paging message.
  • the future access network can be implemented by a cloud radio access network (C-RAN) architecture
  • C-RAN cloud radio access network
  • CU Centralized Unit
  • DU Distributed Unit
  • the CU parts of multiple base stations are integrated to form a larger scale.
  • Functional entity Based on this consideration, the present application provides an internal architecture of the RAN.
  • the base station includes a CU and a DU, wherein the CU and the DU have a CU-DU interface.
  • the CU-DU interface may also be referred to as an F1 interface.
  • the control plane of the CU-DU interface is called F1-C
  • the user plane of the CU-DU interface is called F1-U.
  • the F1-C interface can transmit two types of messages, one is UE-associated signalling and the other is common signalling.
  • the UE related message may be used for the process of session management, mobility management, and context management of the UE, and the common signaling may be used for interface management, configuration update of the CU/DU, and the like.
  • the future access network can also adopt NFV technology, so that the access network functional entities can also dynamically expand and migrate. Therefore, the CU-DU interface between the CU and the DU also needs dynamic capacity expansion and load sharing, and thus can also be implemented by establishing multiple SCTP couplings.
  • FIG. 6 shows a CU-DU interface control plane protocol stack, which is different from FIG. 4 in that the protocol stack in FIG. 4 is based on an NG interface, and FIG. 6 is based on an F1 interface.
  • FIG. 3 and FIG. 5 is only an example of the scenario applied by the method provided by the present application, and does not constitute a limitation of the present application.
  • the technical solution provided by the present application can also be applied to 2G.
  • Two components in any one of the 3G and 4G communication systems, the 5G communication system, and the future communication system (for example, CUs and DUs in the gNB), or between the access network control plane entity and the core network control plane entity The interface needs to establish multiple couplings and communication scenarios that require multiple couplings to be managed.
  • FIG. 7 shows a method for coupling management provided by an embodiment of the present invention, including:
  • the first network node establishes a second with the second network node according to the TNL address of the configured one or more second network nodes (eg, the TNL address includes at least one of one or more IP addresses and port numbers)
  • the second coupling is the first coupling established by the first network node and the second network node for the first interface.
  • the TNL address of the second network node in the embodiment of the present invention may be configured by the Operations Administration & Maintenance (OAM) unit to the first network node.
  • OAM Operations Administration & Maintenance
  • the first network node can establish with the second network node according to the TNL address of the one or more second network nodes (for example, dedicated to establishing the primary coupled TNL address) or the TNL address of any of the second network nodes.
  • the second coupling is the basis for subsequent implementation of signaling interaction.
  • the coupling in the embodiment of the present invention is a correspondence between two SCTP endpoints for providing a transport service for an upper layer protocol. Therefore, it can be coupled to SCTP.
  • the first network node and the second network node can use the second coupled transmission interface to control the surface message.
  • an NGAP message or an F1AP message e.g., the first network node sends a first interface control plane setup request message (eg, NG Setup Request, F1 Setup Request) by using the second coupling, and the second network node replies to the first interface control plane by using the second coupling.
  • Response message for example, NG Setup Response, F1 Setup Response).
  • the first network node and/or the second network node establish a second coupled list for managing one or more couplings used by the first interface control plane.
  • the second coupling list includes at least one of the following information: a TNL address for establishing a second coupling, and identification information of the second coupling.
  • the second coupled identification information may be a default identifier, such as 0, or the second coupled identification information may be OAM configured.
  • the first network node or the second network node specifies the second coupling as a primary coupling.
  • This primary coupling is the only coupling that can transmit a common message.
  • This second coupling is included in the second coupling list.
  • the first network node and/or the second network node identify the second coupling as a primary coupling in the second coupling list.
  • a primary coupling identifier is added to the second coupling list and the primary coupling identifier is associated with the second coupling.
  • step of designating the second coupling as the main coupling in the present application may be performed after S102 or S105 or S107, which is not limited in the present application.
  • the second network node sends a first message to the first network node by using the first interface control plane (for example, NG-C or F1-C), where the first message is used to indicate that the first network node is established on the first interface.
  • the first coupling (this first coupling may also be referred to as an additional coupling).
  • the first message is sent on the second coupling.
  • the first message carries a first coupled list, where the first coupled list includes one or more TNL addresses for establishing an additional coupled second network node (eg, the TNL address includes one or more IP addresses) At least one of an address and a port number (to be described as a first address for ease of description) and at least one of the first identifiers associated with each of the one or more first addresses (For example, the first message carries multiple first addresses, or the first message carries multiple first identifiers associated with the first address, or the first message carries multiple first addresses and each of the plurality of first addresses The first identifier of the address association, such that when the first network node establishes a coupling with any one of the one or more first addresses, the first identifier associated with any one of the first addresses may be assigned to The coupling of any one of the first addresses established.
  • the first coupling list is used to indicate that the first coupling is determined according to the first identifier, and is further used to indicate, in a subsequent procedure, that the coupling associated with the UE is determined according to the identifier information of the UE.
  • the relationship between the plurality of first addresses and the first identifier associated with each of the first addresses is: Add1 is associated with index1, Add2 is associated with index2, and Add3 is associated with index3. Then, when the first network node establishes the coupling 1 with the second network node based on Add1, the index 1 can be assigned to the coupling 1.
  • the first message is NG SETUP RESPONSE, AMF CONFIGURATION UPDATE in the NGAP message, F1 SETUP RESPONSE in F1AP, CU CONFIGURATION UPDATE.
  • the first network node establishes a first coupling with the second network node according to the first coupled list carried by the first message, where the first coupling is performed by the first network node with the second interface on the first interface.
  • the first interface is a connection interface between the first network node and the second network node.
  • the establishment of the first coupling in the present application is established after the second coupling is performed on the first interface.
  • the first coupling can also be established before the second coupling, and the current coupling is established.
  • the TNL address of the first coupled second network node is configured by the OAM to the first network node, and when the first coupling is established after the second coupling is performed on the first interface, establishing the first coupled TNL address is established by The second network node transmits to the first network node on the second coupling.
  • the first coupling list in the present application includes at least one coupling.
  • the first network node associates the first identifier with the first identifier, so that the first coupling has a first identifier, where the first identifier is used to identify the first coupling.
  • the first network node may directly associate the first identifier with the first coupling (for example, the first network node may number each coupling according to the number of established couplings, and each even The associated number is used as the first identifier of each coupling.
  • the identifier associated with each first address carried in the first message may also be used as the first identifier of the first coupling.
  • the first message may only carry multiple first addresses, but in order to make the second network node also have the first identifier and the first coupling Correlation relationship, in order to manage the first coupling, after the first network node directly assigns the first identifier to the first coupling, the association relationship between the first identifier and the first coupling may also be sent to the second Network node.
  • the first identifier of the first coupling node that is the first coupling association may be configured by OAM, that is, OAM. Determining an association between the address of the first coupled TNL and the first identity, such that the first network node can associate the first identity of the OAM assignment with the first coupling after the first coupling.
  • the first identifier is an identifier associated with an address of the second network node used to establish the first coupling.
  • the second network node may be configured according to the first coupling between the first identifier and the second network node.
  • the first identification determines the coupling that needs to be managed as the first coupling.
  • the first network node and/or the second network node update the second coupled list, so that the second coupled list includes at least one of the following information: the first coupled first address (ie, used for Establishing a first coupled TNL address), a first coupled first identifier.
  • the first coupled first address ie, used for Establishing a first coupled TNL address
  • a first coupled first identifier ie, used for Establishing a first coupled TNL address
  • the present application provides a method of coupling management, by establishing a first coupling at a first interface after having a second coupling (eg, primary coupling) on the first interface, such that the first network node and the first
  • the first interface between the two network nodes has multiple couplings (for example, the first coupling and the second coupling), so that during the dynamic expansion or migration process of the first network node and the second network node, the The multiple couplings share the load of the first network node and the second network node to meet the needs of future mobile communication networks.
  • a first identity eg, index
  • the TNL address (eg, one or more sets of IP addresses and port numbers) to indicate the first coupling, since the first coupled TNL address typically occupies more bits, and the first identifier occupies less than the number of bits.
  • the number of bits occupied by the first coupled TNL address thus saving signaling overhead when there are multiple couplings on the first interface and multiple couplings need to be managed.
  • the method provided by the present application further includes:
  • the second network node sends a second message to the first network node by using the first interface, where the second message carries a third coupled identifier, where the third coupled identifier is used to indicate that the first network node is to be in the first
  • the third coupled identifier is associated with a third coupling as a primary coupling; and/or the second message carries a second coupled first identity, the second message being used to instruct the first network node to release the second coupling.
  • the second coupling is included in the second coupling list.
  • the third coupling may be one of a plurality of couplings already existing on the first interface, or may be a coupling to be established on the first interface.
  • the first network node receives the second message on the first interface control plane, and removes the second coupling from the second coupled list according to the second message and/or third in the second coupled list.
  • the coupled label is a primary coupling, wherein the second coupled list has at least a second coupled record and/or at least a third coupled record.
  • the third coupling is not one of the existing couplings on the first interface
  • the second message received by the first network node needs to carry the third coupled TNL address, so that the first network node A third coupling is established with the second network node based on the third coupled TNL address.
  • the third coupled identifier and/or the third coupled TNL address are added to the second coupled list.
  • the first network node uses the third coupling associated with the third coupled identifier as the primary coupling finger to perform the function of the primary coupling by using the third coupling, for example, sending public signaling, etc. .
  • the method provided by the application further includes:
  • the second network node sends a third message to the first network node at the first interface, where the third message is used to indicate that the first network node selects one of the multiple couplings on the first interface, and The selected coupling is used to send or receive a special interface message; or the third message is used to instruct the first network node to establish a fourth coupling on the first interface, the fourth coupling is used to send or receive a special interface message .
  • the third message is different in function, and the content carried in the third message may be different.
  • the third message in this application carries a third coupled list, where the third coupled list may include the selected coupling ( The identifier of the fourth coupling) and at least one of the TNL addresses of the second network node used to establish the selected coupling (fourth coupling).
  • the third message indicates that the fourth coupling is established, at least the TNL address of the second network node for establishing the fourth coupling needs to be carried in the third coupled list.
  • the third coupled list may only carry the selected coupled identifier, as compared to the third Carrying the TNL address of the second network node for establishing the selected coupling may reduce the signaling overhead of the third message.
  • the fourth coupling may be used by the first network node to send an Initial UE message, or the first network node receives a handover Request message, or the first network node sends a Path Switch Request message, and the fourth coupling may be used as a candidate. Primary coupling.
  • the multiple couplings established on the first interface in the present application may have a coupled list, or may have different coupling lists, that is, a coupling list may be assigned to a coupling for implementing the same function.
  • the application does not limit this.
  • the first network node receives a third message sent by the second network node, where the third message is used to indicate that the first network node selects a coupling from the couplings on the first interface, where the selected coupling Used to send or receive a special interface message or as a candidate primary coupling or as a primary coupling; or, a third message is used to indicate that the first network node establishes a fourth coupling on the first interface, and the fourth coupling is used Send or receive special interface messages or use as a primary coupling or as a primary coupling.
  • the first network node can determine the coupled function on the first interface by the third message.
  • the first network node and/or the second network node update the second coupled list, so that the second coupled list includes the fourth coupled TNL and/or fourth coupled label.
  • the method provided by the present application further includes:
  • the first network node acquires an association relationship between the user equipment UE and the fifth coupling, where the association relationship is used to indicate that the first network node sends the UE-related signaling of the UE on the fifth coupling (also referred to as a specific interface. Message), the fifth coupling is a coupling on the first interface.
  • the first network node may select the coupling (eg, the fifth coupling) associated with the UE to send the UE related signaling according to the association relationship between the UE and the coupling, for example, initial context establishment.
  • Initial context setup message For example, initial context setup message.
  • S109 in the present application can be implemented in the following manner:
  • the second network node sends an association relationship between the UE and the fifth coupling to the first network node.
  • the second network node may send, by using an interface message (for example, the first interface message), the association relationship between the UE and the fifth coupling to the first network node.
  • an interface message for example, the first interface message
  • the association between the UE and the fifth coupling may be a relationship between the identifier information of the UE and the fifth coupled identifier, where the identifier information of the UE is used to identify the UE, for example, may be the first
  • the ID assigned by the network node to the UE on the first interface may also be the ID assigned by the second network node to the UE on the first interface, or the unified UE ID on the first interface, which is not limited in this application.
  • the association relationship between the UE and the fifth coupling includes a combination of one or more of the following information: identification information of the UE, a fifth coupled identifier, and a fifth coupled TNL address.
  • the first interface message may be Initial Context Setup, UE Context Modification, UE Context Modification Indication, UE Context Modification Indication Confirm, UE-SCTP Association Debination Update, UE-TNLAssociation Binding Update, and the like.
  • the first network node receives an association relationship between the UE and the fifth coupling sent by the second network node.
  • the first network node acquires an association relationship between the UE and the fifth coupling according to the received association relationship.
  • the first network node transmits and/or receives UE related signaling of the UE on a fifth coupling.
  • the first network node and/or the second network node store an association relationship between the UE and the fifth coupling.
  • the first network node and/or the second network node store the association relationship between the UE and the fifth coupling as part of the context of the UE, in a context of the UE.
  • the first network node and/or the second network node have stored the association relationship between the UE and the sixth coupling, and the sixth coupling and the If the five couplings are not the same coupling, the first network node updates the UE-associated coupling according to the received association between the UE and the fifth coupling sent by the second network node, that is, the coupling associated with the UE is The sixth coupling is updated to a fifth coupling.
  • S109 in the present application can also be implemented in the following manner:
  • the first network node receives the UE-related signaling of the UE on the fifth coupling, and associates the fifth coupling with the UE to obtain an association relationship between the UE and the fifth coupling.
  • the first network node after the first network node sends the relevant signaling of the UE1 on the coupling 1, the first network node, if receiving the relevant signaling of the UE1 on the coupling 2, associates the coupling 2 with the UE1, that is, The UE-related signaling of the subsequent UE1 is transmitted on the coupling 2.
  • the coupling 2 may be the same as or different from the coupling 1, and is not limited herein. If the coupling 2 is the same as the coupling 1, the first network node maintains the association relationship between the UE1 and the coupling 1. If the coupling 2 is different from the coupling 1, the first network node updates the association relationship between the UE1 and the coupling 1. The relationship between UE1 and Coupling 2.
  • the source base station passes an interface with the target base station (for example, The Xn interface sends a handover request message to the target base station, where the handover request message includes a context of the UE, for example, an identifier of a core network control plane entity (eg, AMF, MME) serving the UE, and the MME allocates the UE UE ID (eg, MME UE NGAP ID) on the interface between the base station and core network control plane entities.
  • a core network control plane entity eg, AMF, MME
  • the target base station After receiving the handover request message sent by the source base station, if the target base station allows the UE to access, the target base station prepares and reserves the corresponding resource for the UE.
  • the handover request message in the present application may further include the association relationship between the UE and the coupling, so that the target base station is conveniently located in the UE.
  • the coupling associated with the UE is prepared, so that after the subsequent UE interface, the UE-related signaling of the UE is sent on the coupling associated with the UE.
  • S109 in the present application can also be implemented in the following manner:
  • the second network node receives, on the second interface, a fourth message (for example, a handover request message) sent by the third network node, where the fourth message includes an association relationship between the UE and the fifth coupling, where the fifth even And used to instruct the third network node to transmit UE related signaling of the UE on the first interface, where the UE is a UE to be handed over to the first network node.
  • a fourth message for example, a handover request message
  • the fourth message includes an association relationship between the UE and the fifth coupling, where the fifth even And used to instruct the third network node to transmit UE related signaling of the UE on the first interface, where the UE is a UE to be handed over to the first network node.
  • the association relationship between the UE and the fifth coupling includes a combination of one or more of the following information: identification information of the UE, a fifth coupled identifier, and a fifth coupled TNL address.
  • the identifier information of the UE may be: a UE ID allocated by the third network node on the second interface, and/or a UE ID allocated by the core network entity to the UE in the first interface.
  • the fourth message may be a Handover Request message.
  • the second network node sends a fourth message to the first network node.
  • the first network node receives the fourth message sent by the second network node.
  • the relationship between the relationship and the target base station may interact with the same AMF or with different AMFs. Therefore, the following two scenarios are introduced in combination with different scenarios:
  • the third network node in the application may be the base station where the UE is located before switching to the first network node, for example, The source base station, at this time, the first network node is the target base station described above.
  • the source base station After the source base station selects the target base station for the UE, the source base station sends a handover request message to the target base station through the second interface (for example, Xn) between the source base station and the target base station.
  • the second interface for example, Xn
  • the handover request message carries the coupling information used by the UE on the first interface of the source base station (the interface between the source base station and the core network control plane entity), that is, the handover The request message carries an association relationship between the identification information of the UE and the coupled information.
  • the coupling information includes: a TNL address of the core network control plane entity (eg, at least one of an IP address and a port number) and/or a fifth coupled identifier.
  • the coupling information is included in the UE context information UE context information.
  • the first network node acquires an association relationship between the UE and the fifth coupling according to the fourth message, where the fifth coupling is based on the fifth coupled TNL address of the first network node (second network Node node)
  • the coupling established on the third interface, the association between the UE and the fifth coupling is used to indicate that the UE related signaling of the UE is transmitted on the third interface.
  • the handover request message includes the TNL address 1 of the core network control plane entity, and the first network node and the third network node communicate with the same network node, so the first network The node may determine, according to the TNL address 1 of the core network control plane entity, whether there is a coupling established by the TNL address 1 of the core network control plane entity on the third interface, or whether the third interface is determined according to the fifth coupled identifier. The coupling associated with the fifth coupled label.
  • the first network node associates the fifth coupling on the third interface with the UE, such that the UE After switching from the third network node to the first network node, the UE-related signaling of the UE on the third interface may be sent by using the fifth coupling.
  • the method further includes: the first network node sends a handover instruction to the UE, where the handover instruction is used to indicate that the UE switches to the first network node, so that the UE can switch from the source base station to the first according to the handover instruction.
  • the first network node sends a path switch request for the UE to the second network node by using the third interface, where the path switch request is used to instruct the second network node to switch the control plane connection and the user plane connection of the UE by the third network node to The first network node.
  • the first network node when the first network node sends a path switch request for the UE to the second network node by using the third interface, if the first network node saves the association relationship between the UE and the fifth coupling, A network node can send a path switch request through the fifth coupling. If the first network node does not save the association between the UE and a certain coupling at this time, the first network node may select one of the multiple couplings that the third interface has (for example, in the special coupling list).
  • the coupling for selecting to send a path switch message is associated with the UE to send a path switch request for the UE or to transmit UE related signaling for the UE.
  • the second network node after receiving the path switch request sent by the first network node, the second network node sends a path switch request response to the first network node by using the third interface.
  • the path switch request response carries an association relationship between the UE and a certain coupling
  • the first network node may establish an association relationship between the UE and a coupling after the first network node receives the association relationship between the UE and a certain coupling. Or update the original UE and coupled associations.
  • the first network node does not establish an association relationship between the UE and the coupling (for example, the handover request does not include the association relationship between the UE and the fifth coupling): the first network node is receiving After the association between the UE and the coupling 1 in the path switching request response, the association relationship between the UE and the coupling 1 is newly established in the context of the UE. 2. In the case that the first network node has established the association relationship between the UE and the coupling 2: a. If the first network node determines that the coupling associated with the UE in the path switching request response is coupled 1, the first The network node changes the association between the originally recorded UE and the coupling 2 to the UE and the coupling 1. 3.
  • the coupling of the path switch request response message is received as a coupling associated with the UE, and based on this, the UE and the coupled association relationship are established or updated, for example, the first network node is in the even The connection 1 (this coupling 1 may be associated with the UE, or the first network node may be selected from the plurality of couplings), but the path switch request response message is received on the coupling 2 , coupling 2 is associated with the UE.
  • FIG. 13 differs from FIG. 12 in that the source base station (for example, the third network node) and the target base station (for example, the first network node) are the same in FIG. A core network control plane entity is connected.
  • the second network node that is, the source base station and the target base station respectively have a first interface and a third interface with the AMF1.
  • the source base station and the target base station are respectively connected to different core network control plane entities, that is, the first interface exists between the source base station and the AMF2, and the target base station (the first network node) and the AMF1 (the first base station) There is a third interface between the two network nodes/third network nodes.
  • the AMF1 corresponding to the target base station specifies the coupling associated with the UE to the target base station, and sends the determined association relationship to the target base station.
  • the third network node is the second network node.
  • the specific process is: the source base station sends a Handover Required message to the source core network control plane entity, and the source core network control plane entity reconfigures the request (Relocation Request) message (or has the same function as the reconfiguration request message)
  • the other message is sent to the third network node (the target core network control plane entity); the target core network control plane entity (ie, the core network control plane entity corresponding to the target base station) sends a handover request message to the target base station; After receiving the handover request message, the target base station replies to the handover request response if it is determined to accept the UE.
  • the handover request message carries the coupling information specified by the target core network control plane entity for the UE.
  • the coupling information includes: establishing at least one of the specified coupled TNL address (eg, a certain TNL address of the target core network control plane entity side) and the coupled identifier.
  • the target base station establishes an association relationship between the UE and the coupling associated with the specified coupling information; or, if the target base station is on a certain coupling
  • the coupling eg, the fifth coupling
  • the handover request response is sent using the coupling associated with the UE.
  • the handover request response is used to indicate that the UE can be handed over to the target base station.
  • the target base station sends a handover confirmation message to the target core network control plane entity. If the association between the UE and the coupling has been established in the target base station at this time, a handover confirmation message is sent on the coupling associated with the UE. If the association between the UE and the coupling is not established in the target base station at this time, the target base station may select one of the multiple couplings of the first interface as the coupling associated with the UE (eg, from a special coupling). A coupling for transmitting a handover confirmation message is selected in the list, and a handover confirmation message is sent by the coupling.
  • the target core network entity sends a message for indicating that the UE-SCTP coupled association relationship is changed.
  • the method provided by the embodiment of the present invention further includes:
  • the first network node receives a handover request message sent by the third network node, where the handover request message includes an association relationship between the UE and the fifth coupling, where the UE is a UE to be handed over to the first network node, where The coupling is the coupling used by the UE before switching to the first network node.
  • the first network node is the target base station
  • the third network node is AMF2.
  • the association relationship between the UE and the fifth coupling may include a combination of one or more of the following information: identification information of the UE, used to establish a fifth coupled TNL address, and a fifth coupled identifier information.
  • the first network node sends a third message to the second network node, where the third message is used to indicate that the fifth coupling is established on the third interface.
  • the first message in S102 in this application may be sent by the second network node under the trigger of the third message, where the establishment of the first coupling is based on the first network node.
  • the demand triggers that the second network node can decide whether it is necessary to notify the first network node to establish the first coupling according to needs if the S110 and S111 are not added before S102.
  • the first network node in the foregoing embodiment may be a gNB as shown in FIG. 3, the second network node may also be an AMF as shown in FIG. 3, and the first interface and the third interface may be NG.
  • the first network node may also be a DU as shown in FIG. 5, the second network node may also be a CU as shown in FIG. 5, and the first interface and the third interface may also be F1-C.
  • the present application also provides a method for coupling management, which is applied to a first network node, which includes a transport layer processing. And a radio layer processing unit, the transport layer processing unit and the radio layer processing unit for transmitting the first interface between the first network node and the second network node.
  • the method includes:
  • the transport layer processing unit detects a communication state of each of the plurality of couplings on the first interface.
  • the transport layer processing unit when determining that the first coupling has a transmission fault in the multiple couplings, feeds back to the wireless layer processing unit that the first coupling has a transmission fault.
  • step S202 is specifically implemented by: the transport layer processing unit detects that the first coupling in the multiple couplings has a transmission fault, and the transport layer processing unit sends a first message to the radio layer processing unit, where the The message includes at least one of a first coupled address and a first coupled identifier, the first message being used to feed back the first coupled transmission fault, the first coupled address and/or the identifier identifying the first Coupling.
  • the radio layer processing unit receives the first coupling with the transmission fault from the transport layer processing unit.
  • the wireless layer processing unit deletes the first coupling from the second coupled list according to the first coupled feedback with the transmission fault, where the second coupled list has at least the first coupled record, the first even
  • the coupling is coupled to one of the plurality of couplings that the first interface has, and the first interface is a connection interface between the first network node and the second network node.
  • At least the association relationship between the first coupling and the first identifier is recorded in the second coupling list in the embodiment of the present invention.
  • the first network node acquires the identifier information of the first UE that is associated with the first coupling, and deletes the association relationship between the first UE and the first coupling.
  • the second coupled list includes identification information of the UE associated with the first coupling. The first network node deletes the association relationship between the first UE and the first coupling in the context information of the first UE.
  • the first network node selects the second coupling as an association with the first UE.
  • the first network node stores the association relationship of the first UE and the second coupling in the context of the first UE.
  • the second coupling is a coupling other than the first coupling on the first interface, and the second coupling may be included in a particular coupling list (eg, selected from a special coupling list) Send the coupling of the Initial UE message).
  • the failure of the first coupling is reported to the wireless layer processing unit, so that the wireless layer processing unit
  • the first coupled record can be deleted from the first coupled list to achieve management of the coupling, and since multiple couplings are established on the first interface, only one coupling failure will not affect The first interface fails, and the first network node and the second network node can also send control messages on the remaining couplings except the first coupling.
  • the first network node in this application may be a gNB or a DU, or may be an AMF or a CU.
  • gNB, DU, AMF, and CU each have a Transport Layer Processing Unit (TNL) and a Radio Layer Processing Unit (RNL).
  • TNL Transport Layer Processing Unit
  • RNL Radio Layer Processing Unit
  • the method provided by the application further includes:
  • the transport layer processing unit detects that multiple couplings have transmission faults or the third coupling has transmission faults, and feeds back to the wireless layer processing unit that multiple couplings have transmission faults or the third coupling has transmission faults.
  • the third coupling is coupled to one of a plurality of couplings on the first interface for transmitting common signaling.
  • the radio layer processing unit determines that the first interface fails.
  • the present application further includes:
  • the wireless layer processing unit sends a second message to the opposite side radio layer processing unit, where the second message is used to instruct the opposite side radio layer processing unit to delete the first coupling from the third coupled list, the third coupled list.
  • the opposite side wireless layer processing unit is located on the second network node.
  • the opposite side radio layer processing unit deletes the first coupled record in the second coupling list. In this way, the second network node can also delete the first coupling that fails in time.
  • the second network node may be a gNB or a DU, or may be an AMF or a CU.
  • the second network node is an AMF or a CU
  • the first network node is an AMF, Or CU
  • the second network node is gNB or DU.
  • the method provided by the present application also includes:
  • the first network node and/or the second network node radio layer processing unit deletes the association relationship between the first coupling and the target user equipment UE, where the target UE is the at least one UE associated with the first coupling.
  • the method provided by the application further includes:
  • the first network node and/or the second network node, the radio layer processing unit when receiving the UE-related signaling of the target UE, associate the third coupling with the target UE, and the third coupling is performed on the first interface. A coupling.
  • the first network node and/or the second network node radio layer processing unit may further send a third message to the opposite side radio layer processing unit, the third message including the third coupling and the target UE
  • the association relationship may be accompanied by the second network node changing the association relationship between the originally recorded target UE and a coupling to the third coupled target UE.
  • the sending interface message indicates that the association relationship between the related UE and the SCTP is changed, and the interface message may indicate the association of the UE associated with the SCTP in batches.
  • the coupling becomes another coupling.
  • the interface message may be sent in one piece in a message indicating that the peer coupling failed.
  • steps S201-S210 provided in the present application may be performed after the first identifier is assigned to the first coupling in the foregoing embodiment, or may be performed separately.
  • the present application is now separately executed in steps S201-S210. Be explained.
  • each network element such as the first network node, the second network node, etc.
  • each network element in order to implement the above functions, includes corresponding hardware structures and/or software modules for performing the respective functions.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • the application may divide the function modules of the first network node, the second network node, and the like according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one process.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the present application is schematic, and is only a logical function division, and may be further divided in actual implementation.
  • the present application introduces the structure of the first network node and the second network node, taking the first network node as the gNB as an example and the second network node as the AMF as an example.
  • FIG. 15 shows a possible structural diagram of the first network node involved in the above embodiment.
  • the first network node includes: an establishing unit 101 and an associating unit 102.
  • the establishing unit 101 is configured to support the first network node to perform steps S101 and S103 in the foregoing embodiment; the association unit 102 is configured to support the first network node to perform step S104 in the foregoing embodiment.
  • the first network node provided by the application further includes: a receiving unit 103 and an obtaining unit 104, wherein the receiving unit 103 is configured to support the second network node to execute S106, S108, S1092a, S1091c, S1093c, and S110 in the foregoing embodiment.
  • the obtaining unit 104 is configured to support the first network node to perform steps S109 and S1093a, S1091b, S1092c, and S1094c in the above embodiment.
  • the first network node may further include a sending unit 105 for supporting the first network node to execute S111 in the foregoing embodiment. And/or other processes for the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional description of the corresponding functional modules, and details are not described herein again.
  • the receiving unit 103 in the present application may be a receiver of the first network node, and the sending unit 105 may be a transmitter of the first network node, and the receiver and the transceiver may be generally integrated.
  • the specific receiving unit 103 and the transmitting unit 105 may be communication interfaces of the first network node, and the establishing unit 101 and the associating unit 102 and the obtaining unit 104 may be integrated in the processor of the first network node.
  • FIG. 16 shows a possible logical structure diagram of the first network node involved in the above embodiment.
  • the first network node includes a processing module 112 and a communication module 113.
  • the processing module 112 is configured to perform control management on the action of the first network node.
  • the processing module 112 is configured to support the first network node to perform steps S101 and S103 in the foregoing embodiment, steps S104, S109, and S1093a, S1091b, S1092c, and S1094c.
  • the communication module 113 is configured to support the first network node to perform steps S106, S108, S1092a, S1091c, S1093c, and S110, S111 in the above embodiment. And/or other processes for the techniques described herein.
  • the first network node may further include a storage module 111 for storing program codes and data of the first network node.
  • the processing module 112 may be a processor or a controller, such as a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, Hardware components or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • the communication module 113 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 111 can be a memory.
  • the processing module 112 is the processor 120
  • the communication module 113 is the communication interface 130 or the transceiver
  • the storage module 111 is the memory 140
  • the first network node involved in the present application may be the device shown in FIG.
  • the communication interface 130, the processor 120, and the memory 140 are mutually connected by a bus 110; the bus 110 may be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 17, but it does not mean that there is only one bus or one type of bus.
  • the memory 140 is configured to store program codes and data of the first network node.
  • the communication interface 130 is configured to support the first network node to communicate with other devices (eg, the second network node), and the processor 120 is configured to support the first network node to execute the program code and data stored in the memory 140 to implement one provided by the present application. A method of coupling management.
  • FIG. 18 shows a possible structural diagram of the second network node involved in the above embodiment.
  • the second network node includes: a transmitting unit 201.
  • the sending unit 201 is configured to support the second network node to perform steps S102, S105, S107, and S1091a in the foregoing embodiment.
  • the sending unit 202 is configured to support the first network node to perform steps S103 and S106 in the foregoing embodiment. And/or other processes for the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional description of the corresponding functional modules, and details are not described herein again.
  • the sending unit 201 in the present application may be a transmitter of the second network node.
  • the second network node further includes a receiver, and the receiver and the transceiver may be integrated together.
  • the specific sending unit 201 can be a communication interface of the first network node.
  • FIG. 19 shows a possible logical structure diagram of the second network node involved in the above embodiment.
  • the second network node includes a processing module 212 and a communication module 213.
  • the processing module 212 is configured to perform control management on the second network node action.
  • the processing module 212 is configured to support the second network node to perform steps S102, S105, S107, and S1091a in the foregoing embodiment by using the communication module 213.
  • the first network node may further include a storage module 211 for storing program codes and data of the second network node.
  • the processing module 212 can be a processor or a controller, for example, a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, Hardware components or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • the communication module 213 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 211 can be a memory.
  • the second network node involved in the present application may be the device shown in FIG.
  • the communication interface 230, the processor 220, and the memory 210 are mutually connected by a bus 200; the bus 200 may be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 20, but it does not mean that there is only one bus or one type of bus.
  • the memory 210 is configured to store program codes and data of the second network node.
  • the communication interface 230 is configured to support the second network node to communicate with other devices (eg, the first network node), and the processor 220 is configured to support the second network node to execute the program code and data stored in the memory 210 to implement one provided by the present application. A method of coupling management.
  • FIG. 21 shows a possible structural diagram of the first network node involved in the above embodiment.
  • the first network node may be a gNB or an AMF.
  • the first network node includes a transport layer processing unit 301 and a radio layer processing unit 302.
  • the transport layer processing unit 301 is configured to support the first network node to perform steps S201, S202, and S205 in the foregoing embodiment.
  • the radio layer processing unit 302 is configured to support the first network node to perform steps S203 and S204 in the foregoing embodiment. S206 and S207, S209, and S210. And/or other processes for the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional description of the corresponding functional modules, and details are not described herein again.
  • a computer readable storage medium is stored, where computer execution instructions are stored, when at least one processor of the first network node executes the computer to execute an instruction, a network node performs steps S101 and S103, S104, S109, S1093a, S1091b, S1092c, S106, S108, S1092a, S110, S1093c, S1094c, and S111 in the above embodiment or when at least one processor of the second network node executes the When the computer executes the instruction, the second network node executes S102, S105, S107, S1091a in the above embodiment, or executes S201, S202, S203, S204, S205, S206, S207, S208, S209, and S210.
  • a computer program product comprising computer executable instructions stored in a computer readable storage medium; at least one processor of the first network node Reading the computer execution instructions from the computer readable storage medium, the at least one processor of the first network node executing the computer execution instructions to cause the first network node to perform steps S101 and S103, S104, S109, S1093a in the above embodiment S1091b, S1092c, S106, S108, S1092a, S1091c, S110, S1093c, S1094c, and S111 or when at least one processor of the second network node executes the computer to execute an instruction, the second network node executes S102 in the above embodiment, S105, S107, S1091a, or S201, S202, S203, S204, S205, S206, S207, S208, S209, and S210 are executed.
  • a communication system comprising one or more second network nodes, and one or more first network nodes, wherein one or more first network nodes There is a first interface between any one of the first network nodes and one of the one or more second network nodes.
  • the specific communication system can be a base station.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device that includes one or more servers, data centers, etc. that can be integrated with the media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a solid state disk (SSD)

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Abstract

本申请涉及通信领域，尤其涉及一种偶联管理的方法和网络节点，用以降低信令开销。该方案包括：第一网络节点为第一接口建立与第二网络节点之间的第一偶联，所述第一接口为所述第一网络节点和所述第二网络节点之间的连接接口；所述第一网络节点为所述第一偶联关联第一标识，所述第一标识用于识别所述第一偶联。此外通过为第一偶联分配第一标识，可以在后续与第一偶联的相关配置中，仅需要指出第一偶联的标识，第一标识所占的比特较小从而可以节省信令开销。

Description

一种偶联管理的方法和网络节点
本申请要求于2017年8月11日提交中国专利局、申请号为201710687718.6、申请名称为“一种偶联管理的方法和网络节点”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及通信领域，尤其涉及一种偶联管理的方法和网络节点。
背景技术
第四代移动通信技术(the 4th Generation Mobile Communication Technology，4G)的通信协议规定，如图1所示接入网20(又称为：演进型通用陆地无线(Evolved Universal Terrestrial Radio Access Network，E-UTRAN)，例如，基站(eNodeB，eNB))与核心网控制面实体10(又称为：演进型分组核心网(Evolved Packet Core，EPC)例如，移动性管理实体(Mobility Management Entity，MME)和用户面实体S-GW)之间建立的用于传输控制信息的S1-MME接口(如图2所示的S1)上只能建立一个流控制传输协议(Stream Control Transmission Protocol，SCTP)偶联(association)，所谓SCTP偶联就是建立在两个SCTP端点(例如接入网和核心网)之间的连接。
传统技术方案中，S1-MME控制平面接口的初始建立流程为：eNB向建立连接的MME发起无线网络层(Radio Network Layer，RNL)的S1setup流程，从而触发传输网络层(Transport Network Layer，TNL)SCTP偶联的建立。接着是TNL的建立。例如，在LTE的S1-flex功能的支持下，eNB向其所归属的池区内的每个MME节点初始化一个S1接口。池区中的MME节点列表和一个初始的对应远程IP地址可以在网络部署时由eNB直接配置。eNB随后用这个IP地址启动TNL建立。一旦S1setup流程执行完成，S1-MME控制平面接口就可以使用。
但是，未来的移动通信网络(例如，第五代移动通信网络(fifth-generation mobile communication Technology System，5GS)中，核心网和接入网可能会采用网络功能虚拟化(Network Functions Virtualization，NFV)等技术，从而5G网络架构中的核心网控制面实体(例如，接入和移动性管理功能(Access and Mobility Management Function，AMF))和接入网功能实体(例如，下一代基站(New Radio Node，即gNB)，ng-eNB(能够连接5G核心网的eNB))也可能会动态的扩容或迁移，此时如果gNB与AMF之间的接口(例如，NG接口(interface))或CU和DU之间的接口)上建立一个SCTP偶联可能无法进行负荷分担，因此，需要在一个接口上建立多个SCTP偶联，但是传统技术中通常通过用于建立SCTP偶联的地址对SCTP偶联进行管理，这样在一个接口上包括多个SCTP偶联时势必会增加信令开销。
发明内容
本申请提供一种偶联管理的方法和网络节点，用以降低信令开销。
第一方面，本申请提供了一种偶联管理的方法，包括：第一网络节点为第一接口建立与第二网络节点之间的第一偶联，第一接口为第一网络节点和第二网络节点之间 的连接接口；第一网络节点为第一偶联关联第一标识，该第一标识用于识别第一偶联。
本发明实施例提供一种偶联管理的方法，通过第一网络节点为在第一接口上建立的第一偶联关联第一标识，这样在后续对第一偶联的管理过程中，可以仅指出第一偶联的第一标识，而非用建立第一偶联的TNL地址(例如多组IP地址和端口号)来指示第一偶联，由于建立第一偶联的TNL地址通常占得比特数较多，而第一标识所占的比特数通常小于第一偶联的TNL地址所占的比特数，因此当第一接口上有多个偶联并需要对多个偶联进行管理时，可以节省信令开销。
在一种可能的设计中，第一网络节点在第一接口上建立与第二网络节点之间的第一偶联，包括：第一网络节点在第一接口上建立与第二网络节点之间的第一偶联，包括：第一网络节点根据被配置的第二网络节点的地址，在第一接口上建立与第二网络节点之间的第一个偶联，并将该第一个偶联作为第一偶联。具体的，第一网络节点根据被配置的TNL地址在第一接口上建立第一个偶联，并通过为第一个偶联关联第一标识，这样在后续过程中可以对其进行管理。
在一种可能的设计中，第一网络节点为第一接口建立与第二网络节点之间的第一偶联，包括：第一网络节点根据预配置表，为第一接口建立第一偶联，该预配置表包括用于建立第一偶联的地址以及与地址关联的第一标识中的至少一项。可以将与地址关联的第一标识作为第一偶联的第一标识，也可以由第一网络节点自己为第一偶联分配第一标识。
在一种可能的设计中，第一网络节点建立所述第一偶联时，所述第一接口上已具有第二偶联，所述第一网络节点为第一接口建立与第二网络节点之间的第一偶联，包括：第一网络节点在所述第二偶联上接收所述第二网络节点发送的第一偶联列表，所述第一偶联列表包括用于建立所述第一偶联的地址以及与所述地址关联的第一标识中的至少一项；所述第一网络节点根据所述第一偶联列表，为所述第一接口建立与所述第二网络节点之间的所述第一偶联，第一网络节点建立第一偶联时，第一接口上已具有第二偶联，第二偶联为第一接口上第一个建立的偶联，或第二偶联为所述第一接口上具有的多个偶联中的一个偶联，该第二偶联为第一接口上唯一传输公共信令的偶联，第一网络节点在第一接口上建立与第二网络节点之间的第一偶联，包括：第一网络节点在所述第二偶联上接收所述第二网络节点发送的至少用于指示在所述第一接口上建立第一偶联的第一偶联列表，所述第一偶联列表；第一网络节点根据第一偶联列表，在第一接口上建立与第二网络节点之间的第一偶联。通过在第一接口上具有第二偶联(例如，主(primary)偶联)之后建立第一偶联，以使得第一网络节点和第二网络节点之间的第一接口上具有多个偶联(例如，第一偶联和第二偶联)，这样在第一网络节点和第二网络节点动态扩容或迁移过程中，可以通过建立的多个偶联分担第一网络节点和第二网络节点的负荷，以满足未来的移动通信网络的需求。
在一种可能的设计中，第一网络节点接收第二网络节点发送的第一消息，所述第一消息携带被释放偶联的标识，第一消息用于指示第一网络节点释放被释放偶联的标识所关联的偶联。这样第一网络节点可以根据被释放偶联的标识对被释放偶联的标识所管理的偶联执行释放操作，以对偶联进行管理。
在一种可能的设计中，本申请提供的方法还包括：第一网络节点接收所述第二网 络节点发送的第二消息，所述第二消息携带第三偶联的标识，所述第二消息用于指示所述第一网络节点将所述第三偶联的标识关联的第三偶联作为主偶联，所述主偶联用于传输所述第一接口的公共信令。
在一种可能的设计中，第一网络节点接收所述第二网络节点发送的第三消息，所述第三消息中包括第二偶联列表，该第二偶联列表包括至少一个第一标识，所述至少一个第一标识用于指示所述第一网络节点将至少一个第一标识关联的偶联用于发送或接收特殊接口消息(特殊接口消息包括以下消息中任一项：initial UE message，HO request message，triangular redirection消息和path switch request消息)，或者所述至少一个第一标识用于指示第一网络节点将至少一个第一标识关联的偶联用作候选主偶联。
在一种可能的设计中，第一网络节点接收第二网络节点发送的第三偶联列表的第四消息，所述第三偶联列表包括至少一个第一地址和与所述至少一个第一地址中每个第一地址关联的第一标识，所述至少一个第一地址用于所述第一网络节点为所述第一接口建立第四偶联，所述第四偶联用于发送或接收特殊接口消息或用作候选主偶联。
在一种可能的设计中，本申请提供的方法还包括：第一网络节点获取用户设备UE与第五偶联的关联关系，所述关联关系用于指示所述第一网络节点在所述第五偶联上发送所述UE的UE相关信令，所述第五偶联为所述第一接口上的偶联，所述关联关系包括以下信息中的至少一项：所述UE的标识与所述第五偶联的第二标识之间的关系，和所述UE的标识与用于建立所述第五偶联的地址之间的关系。这样第一网络节点可以在与UE具有关联的偶联(例如，第五偶联)上发送UE的相关信令。
在一种可能的设计中，第一网络节点获取用户设备UE与第五偶联的关联关系，包括：所述第一网络节点接收所述第二网络节点发送的所述UE与所述第五偶联的关联关系；或，所述第一网络节点在所述第五偶联上接收到所述UE的UE相关信令，则获取所述UE与所述第五偶联的关联关系；或，所述第一网络节点接收第三网络节点发送的第五消息，所述第五消息用于指示所述UE切换至所述第一网络节点，所述第五消息包括第二地址，所述第二地址为用于建立所述第五偶联的地址。在这种设计中第一网络节点可以根据切换请求消息，来确定与UE关联的偶联，这样当UE切换至第一网络节点中时，第一网络节点可以为UE准备资源。
在一种可能的设计中，第一网络节点获取用户设备UE与第五偶联的关联关系之后，所述方法包括：所述第一网络节点根据所述UE与第五偶联的关联关系，建立所述第五偶联。
在一种可能的设计中，第一网络节点获取用户设备UE与第五偶联的关联关系之后，所述方法包括：所述第一网络节点将所述UE与第五偶联的关联关系存储在偶联列表中。通过将偶联与UE的关联关系存储在偶联列表中，便于后续对偶联的管理。
第二方面，本发明实施例提供一种偶联管理的方法，包括：向第一网络节点发送第一偶联列表，所述第一偶联列表包括用于建立第一偶联的地址以及与所述地址关联的第一标识中的至少一项，所述第一接口为所述第一网络节点和所述第二网络节点之间的连接接口，所述第一网络节点建立所述第一偶联时，所述第一接口上已具有第二偶联，所述第二偶联为所述第一接口上用于传输公共信令的偶联。
在一种可能的设计中，第二网络节点向所述第一网络节点发送第二消息，所述第二消息携带被释放偶联的标识，所述第一消息用于指示所述第一网络节点释放所述被释放偶联的标识所关联的偶联。
在一种可能的设计中，第二网络节点向所述第一网络节点发送第三消息，所述第三消息携带第三偶联的标识，所述第二消息用于指示所述第一网络节点将所述第三偶联的标识关联的第三偶联作为主偶联，所述主偶联用于传输所述第一接口的公共信令。
在一种可能的设计中，本发明实施例提供的方法还包括：第二网络节点向所述第一网络节点发送第四消息，所述第四消息包括第二偶联列表，所述第二偶联列表包括至少一个第一标识，所述至少一个第一标识用于指示所述第一网络节点将所述至少一个第一标识关联的偶联用于发送或接收特殊接口消息，或者所述至少一个第一标识用于指示所述第一网络节点将所述至少一个第一标识关联的偶联用作候选主偶联。
在一种可能的设计中，本发明实施例提供的方法还包括：第二网络节点向所述第一网络节点发送第五消息，所述第五消息包括第三偶联列表，所述第三偶联列表包括至少一个第一地址和与所述至少一个第一地址中每个第一地址关联的第一标识，所述至少一个第一地址用于所述第一网络节点为所述第一接口建立第四偶联，所述第四偶联用于发送或接收特殊接口消息或用作候选主偶联。
在一种可能的设计中，本发明实施例提供的方法还包括：第二网络节点向所述第一网络节点发送UE与第五偶联的关联关系，所述关联关系用于指示所述第一网络节点在所述第五偶联上发送所述UE的UE相关信令，所述第五偶联为第一接口上的偶联，所述关联关系包括以下信息中的至少一项：所述UE的标识与第五偶联的第二标识之间的关系，和所述UE的标识与用于建立所述第五偶联的地址之间的关系。
第三方面，本申请提供一种偶联管理的装置，该偶联管理的装置可以实现第一方面或第一方面的任意一种可能的设计中所描述的偶联管理的方法。例如，该偶联管理的装置可以为基站或者核心网控制面实体(例如AMF)。该偶联管理的装置也可以为应用于基站或者核心网控制面实体中的芯片，其可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
在一种可能的设计中，该偶联管理的装置可以包括处理器和存储器。该处理器被配置为支持该偶联管理的装置执行上述第一方面或第一方面的任意一种可能的设计中所描述的偶联管理的方法中相应的功能。存储器用于与处理器耦合，其保存该偶联管理的装置必要的程序(指令)和数据。另外该偶联管理的装置还可以包括通信接口，用于支持该偶联管理的装置与其他网元之间的通信。该通信接口可以是收发器。
在一种可能的设计中，该偶联管理的装置可以包括建立单元和关联单元。其中，建立单元用于：在为第一接口建立与第二网络节点之间的第一偶联，所述第一接口为所述第一网络节点和所述第二网络节点之间的连接接口；关联单元，用于为所述第一偶联关联第一标识，所述第一标识用于识别所述第一偶联。具体的，第一接口可以为CU-DU接口，也可以为NG接口。
在一种可能的设计中，建立单元，具体用于根据预配置表，为第一接口建立所述第一偶联，所述预配置表包括用于建立所述第一偶联的地址以及与所述地址关联的第一标识中的至少一项。
在一种可能的设计中，第一网络节点建立所述第一偶联时，接收单元，用于在所述第二偶联上接收所述第二网络节点发送的第一偶联列表，所述第一偶联列表包括用于建立所述第一偶联的地址以及与所述地址关联的第一标识中的至少一项；建立单元，用于根据所述第一偶联列表，为所述第一接口建立与所述第二网络节点之间的所述第一偶联。
在一种可能的设计中，接收单元，还用于接收所述第二网络节点发送的第一消息，所述第一消息携带被释放偶联的标识，所述第一消息用于指示所述第一网络节点释放所述被释放偶联的标识所关联的偶联。
在一种可能的设计中，接收单元，还用于接收所述第二网络节点发送的第二消息，所述第二消息携带第三偶联的标识，所述第二消息用于指示所述第一网络节点将所述第三偶联的标识关联的第三偶联作为主偶联，所述主偶联用于传输所述第一接口的公共信令。
在一种可能的设计中，接收单元，还用于接收所述第二网络节点发送的第三消息，所述第三消息中包括第二偶联列表，所述第二偶联列表包括至少一个第一标识，所述至少一个第一标识用于指示所述第一网络节点将所述至少一个第一标识关联的偶联用于发送或接收特殊接口消息，或者所述至少一个第一标识用于指示所述第一网络节点将所述至少一个第一标识关联的偶联用作候选主偶联。
在一种可能的设计中，接收单元，用于接收所述第二网络节点发送的第四消息，所述第四消息包括第三偶联列表，所述第三偶联列表包括至少一个第一地址和与所述至少一个第一地址中每个第一地址关联的第一标识，所述至少一个第一地址用于所述第一网络节点为所述第一接口建立第四偶联，所述第四偶联用于发送或接收特殊接口消息(特殊接口消息包括以下消息中任一项：initial UE message，HO request message，triangular redirection消息和path switch request消息)或用作候选主偶联。
在一种可能的设计中，该偶联管理的装置还包括：获取单元，用于获取用户设备UE与第五偶联的关联关系，所述关联关系用于指示所述第一网络节点在所述第五偶联上发送所述UE的UE相关信令，所述第五偶联为所述第一接口上的偶联，所述关联关系包括以下信息中的至少一项：所述UE的标识与所述第五偶联的第二标识之间的关系，和所述UE的标识与用于建立所述第五偶联的地址之间的关系。
在一种可能的设计中，接收单元，用于接收所述第二网络节点发送的所述UE与所述第五偶联的关联关系，以使得获取单元获取UE与第五偶联具有的关联关系；或，获取单元，具体用于在所述第五偶联上接收到所述UE的UE相关信令，则获取所述UE与所述第五偶联的关联关系；或，接收单元，用于接收第三网络节点发送的第五消息，所述第五消息用于指示所述UE切换至所述第一网络节点，所述第五消息包括第二地址，所述第二地址为用于建立所述第五偶联的地址。
在一种可能的设计中，建立单元，用于根据所述UE与第五偶联的关联关系，建立所述第五偶联。
在一种可能的设计中，将所述UE与第五偶联的关联关系存储在偶联列表中。
第四方面，本申请提供一种偶联管理的装置，该偶联管理的装置可以实现第二方面或第二方面的任意一种可能的设计中描述的偶联管理的方法。例如，该偶联管理的 装置可以为基站或者核心网控制面实体(例如AMF)。该偶联管理的装置也可以为应用于基站或者核心网控制面实体中的芯片，其可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
在一种可能的设计中，该偶联管理的装置可以包括处理器和存储器。该处理器被配置为支持该偶联管理的装置执行上述第二方面或第二方面的任意一种可能的设计中描述的偶联管理的方法中相应的功能。存储器用于与处理器耦合，其保存该偶联管理的装置必要的程序(指令)和数据。另外该偶联管理的装置还可以包括通信接口，用于支持该偶联管理的装置与其他网元之间的通信。该通信接口可以是收发器。
在一种可能的设计中，该偶联管理的装置可以包括：发送单元，用于通过第二偶联向第一网络节点发送第一偶联列表，所述第一偶联列表包括用于建立第一偶联的地址以及与所述地址关联的第一标识中的至少一项，所述第二偶联为所述第一接口上用于传输公共信令的偶联。
在一种可能的设计中，所述发送单元，还用于向所述第一网络节点发送第二消息，所述第二消息携带被释放偶联的标识，所述第一消息用于指示所述第一网络节点释放所述被释放偶联的标识所关联的偶联。
在一种可能的设计中，所述发送单元，还用于向所述第一网络节点发送第三消息，所述第三消息携带第三偶联的标识，所述第二消息用于指示所述第一网络节点将所述第三偶联的标识关联的第三偶联作为主偶联，所述主偶联用于传输所述第一接口的公共信令。
在一种可能的设计中，发送单元，还用于向所述第一网络节点发送第四消息，所述第四消息包括第二偶联列表，所述第二偶联列表包括至少一个第一标识，所述至少一个第一标识用于指示所述第一网络节点将所述至少一个第一标识关联的偶联用于发送或接收特殊接口消息，或者所述至少一个第一标识用于指示所述第一网络节点将所述至少一个第一标识关联的偶联用作候选主偶联。
在一种可能的设计中，发送单元，还用于向所述第一网络节点发送第五消息，所述第五消息包括第三偶联列表，所述第三偶联列表包括至少一个第一地址和与所述至少一个第一地址中每个第一地址关联的第一标识，所述至少一个第一地址用于所述第一网络节点为所述第一接口建立第四偶联，所述第四偶联用于发送或接收特殊接口消息或用作候选主偶联。
在一种可能的设计中，发送单元，还用于向所述第一网络节点发送UE与第五偶联的关联关系，所述关联关系用于指示所述第一网络节点在所述第五偶联上发送所述UE的UE相关信令，所述第五偶联为所述第一接口上的偶联，所述关联关系包括以下信息中的至少一项：所述UE的标识与所述第五偶联的第二标识之间的关系，和所述UE的标识与用于建立所述第五偶联的地址之间的关系。
第五方面，本申请提供一种偶联管理的方法，应用于第一网络节点中，所述第一网络节点包括传输层处理单元和无线层处理单元，所述传输层处理单元和无线层处理单元用于第一接口控制面上，所述第一接口为所述第一网络节点和第二网络节点之间的连接接口，所述第一接口上具有多个偶联，所述第一网络节点存储有第一偶联列表，所述第一偶联列表包括所述多个偶联的相关信息，该方法包括：无线层处理单元接收 来自所述传输层处理单元发送的第一消息，所述第一消息包括所述第一偶联的标识和用于建立所述第一偶联的地址中的至少一项，所述第一消息用于指示所述第一偶联有传输故障；所述第一偶联为所述多个偶联中的一个偶联；无线层处理单元根据所述第一消息，从所述第一偶联列表中删除所述第一偶联的相关信息，所述相关信息包括以下信息中的至少一项：偶联的标识、用于建立所述偶联的地址、和与所述偶联关联的用户设备UE的标识。第一偶联列表用于记录与每个偶联关联的UE，以及每个偶联关联的标识中至少一项，这样第一网络节点在接收到对侧对第一偶联管理的消息时，可以根据偶联的标识从第一偶联列表中索引到偶联的标识所关联的偶联，并对其进行管理(例如，删除、释放、用作其他偶联，以及与UE关联等)，以及根据UE的标识可以确定用于发送该UE的相关信令。相比于现有技术中携带用于建立偶联的地址而言，可以降低信令开销。
在一种可能的设计中，本发明实施例提供的方法还包括：无线层处理单元确定所述第一偶联为所述第一接口的主偶联；或者，所述第一偶联为所述第一偶联列表中的唯一的偶联，所述无线层处理单元确定所述第一接口失败，所述主偶联用于传输所述第一接口的公共信令。
在一种可能的设计中，本发明实施例提供的方法还包括：无线层处理单元向对侧无线层处理单元发送第二消息，所述第一消息用于指示所述对侧无线层处理单元将所述第一偶联从第二偶联列表中删除，所述第二偶联列表中至少具有所述第一偶联的相关信息，所述对侧无线层处理单元位于所述第二网络节点上。通过向对侧发送第二消息，可以使得对侧及时将发生失败的偶联的相关信息删除，以更新第二偶联列表。
在一种可能的设计中，本发明实施例提供的方法还包括：无线层处理单元删除第一偶联与目标用户设备UE具有的关联关系，目标UE为与第一偶联关联的至少一个UE。通过将与发生失败的偶联关联的UE的关联关系删除，这样当存在有关UE的请求时，可以为UE重新分配偶联。
在一种可能的设计中，本发明实施例提供的方法还包括：无线层处理单元在接收到目标UE的相关信令时，将第三偶联与目标UE关联，第三偶联为第一接口上具有的一个偶联。
第六方面，本发明实施例提供一种偶联管理的方法，应用于第一网络节点中，第一网络节点包括传输层处理单元和无线层处理单元，本发明实施例提供的方法包括：传输层处理单元检测第一接口上具有的多个偶联的通信状态，第一接口为第一网络节点和第二网络节点之间的连接接口；传输层处理单元在检测到多个偶联中存在第一偶联有传输故障，向无线层处理单元反馈第一偶联具有传输故障。
在一种可能的设计中，本发明实施例提供的传输层处理单元在检测到多个偶联中存在第一偶联有传输故障，向无线层处理单元反馈第一偶联具有传输故障，包括：传输层处理单元在检测到多个偶联中存在第一偶联有传输故障，传输层处理单元向无线层处理单元发送包括第一偶联的地址或第一偶联的标识的第一消息，该第一消息用于反馈第一偶联有传输故障。
在一种可能的设计中，本发明实施例提供的方法还包括：传输层处理单元在检测到多个偶联均有传输故障，向无线层处理单元反馈多个偶联均有传输故障。
第七方面，本申请提供一种偶联管理的装置，该偶联管理的装置可以实现第五方面或第五方面的任意一种可能的设计中描述的偶联管理的方法。例如，该偶联管理的装置可以为基站或者核心网控制面实体(例如AMF)。该偶联管理的装置也可以为应用于基站或者核心网控制面实体中的芯片，其可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
在一种可能的设计中，该偶联管理的装置可以包括处理器和存储器。该处理器被配置为支持该偶联管理的装置执行上述第五方面或第二方面的任意一种可能的设计中描述的偶联管理的方法中相应的功能。存储器用于与处理器耦合，其保存该偶联管理的装置必要的程序(指令)和数据。另外该偶联管理的装置还可以包括通信接口，用于支持该偶联管理的装置与其他网元之间的通信。该通信接口可以是收发器。
在一种可能的设计中，本申请提供一种偶联管理的装置，应用于第一网络节点中，包括传输层处理单元和无线层处理单元，所述传输层处理单元和无线层处理单元用于第一接口控制面上，所述第一接口为所述第一网络节点和第二网络节点之间的连接接口，所述第一接口上具有多个偶联，所述第一网络节点存储有第一偶联列表，所述第一偶联列表包括所述多个偶联的相关信息，其中，无线层处理单元，用于接收来自所述传输层处理单元发送的第一消息，所述第一消息包括所述第一偶联的标识和用于建立所述第一偶联的地址中的至少一项，所述第一消息用于指示所述第一偶联有传输故障；所述第一偶联为所述多个偶联中的一个偶联；以及无线层处理单元，用于根据所述第一消息，从所述第一偶联列表中删除所述第一偶联的相关信息，所述相关信息包括以下信息中的至少一项：偶联的标识、用于建立所述偶联的地址、和与所述偶联关联的用户设备UE的标识。
在一种可能的设计中，该无线层处理单元，还用于确定所述第一偶联为所述第一接口的主偶联；或者，所述第一偶联为所述第一偶联列表中的唯一的偶联，所述无线层处理单元确定所述第一接口失败，所述主偶联用于传输所述第一接口的公共信令。
在一种可能的设计中，该无线层处理单元，还用于向对侧无线层处理单元发送第二消息，所述第一消息用于指示所述对侧无线层处理单元将所述第一偶联从第二偶联列表中删除，所述第二偶联列表中至少具有所述第一偶联的相关信息，所述对侧无线层处理单元位于所述第二网络节点上。
在一种可能的设计中，该无线层处理单元，还用于删除第一偶联与目标用户设备UE具有的关联关系，目标UE为与第一偶联关联的至少一个UE。
在一种可能的设计中，该无线层处理单元，还用于在通过通信接口接收到目标UE的相关信令时，将第三偶联与目标UE关联，第三偶联为第一接口上具有的一个偶联。
第八方面，本申请提供一种偶联管理的装置，该偶联管理的装置可以实现第六方面或第六方面的任意一种可能的设计中描述的偶联管理的方法。例如，该偶联管理的装置可以是基站，也可以是核心网控制面实体(例如AMF)，也可以为应用于基站胡总额和核心网控制面实体中的芯片，其可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
在一种可能的设计中，该偶联管理的装置可以包括处理器和存储器。该处理器被配置为支持该偶联管理的装置执行上述第六方面或第六方面的任意一种可能的设计中 描述的偶联管理的方法中相应的功能。存储器用于与处理器耦合，其保存该偶联管理的装置必要的程序(指令)和数据。另外该偶联管理的装置还可以包括通信接口，用于支持该偶联管理的装置与其他网元之间的通信。该通信接口可以是收发器。
在一种可能的设计中，该偶联管理的装置可以包括：传输层处理单元和无线层处理单元，其中，传输层处理单元，用于检测第一接口上具有的多个偶联的通信状态，第一接口为第一网络节点和第二网络节点之间的连接接口；传输层处理单元，还用于在处理器检测到多个偶联中存在第一偶联有传输故障，向无线层处理单元反馈第一偶联具有传输故障。
在一种可能的设计中，传输层处理单元，还用于在检测到多个偶联中存在第一偶联有传输故障，向无线层处理单元发送第一消息，该第一消息包括第一偶联的地址或第一偶联的标识，第一消息用于反馈第一偶联有传输故障。
在一种可能的设计中，传输层处理单元，还用于在检测到多个偶联均有传输故障，向无线层处理单元反馈多个偶联均有传输故障。
第九方面，本发明实施例提供一种计算机可读存储介质，其上存储有计算机程序，当该程序在网络节点上运行时，使得第一方面至第一方面的任意一种可能的设计所描述的偶联管理的方法被执行。
第十方面，本发明实施例提供一种计算机可读存储介质，其上存储有计算机程序，当该程序在网络节点上运行时，使得第二方面至第二方面的任意一种可能的设计所描述的偶联管理的方法被执行。
第十一方面，本发明实施例提供一种计算机可读存储介质，其上存储有计算机程序，当该程序在网络节点上运行时，使得第五方面至第五方面的任意一种可能的设计所描述的偶联管理的方法被执行。
第十二方面，本发明实施例提供一种计算机可读存储介质，其上存储有计算机程序，当该程序在网络节点上运行时，使得第六方面至第六方面的任意一种可能的设计所描述的偶联管理的方法被执行。
第十三方面，本发明实施例提供一种计算机程序产品，当其在网络节点上运行时，使得网络节点执行上述第一方面至第一方面的任意一种可能的设计所描述的偶联管理的方法。
第十四方面，本发明实施例提供一种计算机程序产品，当其在网络节点上运行时，使得网络节点执行上述第二方面至第二方面的任意一种可能的设计所描述的偶联管理的方法。
第十五方面，本发明实施例提供一种计算机程序产品，当其在网络节点上运行时，使得网络节点执行上述第五方面至第五方面的任意一种可能的实现方式所描述的偶联管理的方法。
第十六方面，本发明实施例提供一种计算机程序产品，当其在网络节点上运行时，使得网络节点执行上述第六方面至第六方面的任意一项所描述的偶联管理的方法。
第十七方面，本申请实施例提供一种芯片，该芯片包括处理器和接口电路，接口电路和处理器耦合，处理器用于运行计算机程序或指令，以实现第一方面或第一方面的各种可能的实现方式中所描述的一种偶联管理的方法。接口电路用于与所述芯片之 外的其它模块进行通信。
第十八方面，本申请实施例提供一种芯片，该芯片包括处理器和接口电路，接口电路和处理器耦合，处理器用于运行计算机程序或指令，以实现第二方面或第二方面的各种可能的实现方式中所描述的一种偶联管理的方法。接口电路用于与所述芯片之外的其它模块进行通信。
第十九方面，本申请实施例提供一种芯片，该芯片包括处理器和接口电路，接口电路和处理器耦合，处理器用于运行计算机程序或指令，以实现第五方面或第五方面的各种可能的实现方式中所描述的一种偶联管理的方法。接口电路用于与所述芯片之外的其它模块进行通信。
第二十方面，本申请实施例提供一种芯片，该芯片包括处理器和接口电路，接口电路和处理器耦合，处理器用于运行计算机程序或指令，以实现第六方面或第六方面的各种可能的实现方式中所描述的一种偶联管理的方法。接口电路用于与所述芯片之外的其它模块进行通信。
具体的，本申请实施例中提供的芯片还包括存储器，用于存储计算机程序或指令。
可以理解地，上述提供的任一种装置或计算机存储介质或计算机程序产品均用于执行上文所提供的对应的方法，因此，其所能达到的有益效果可参考下文上具体实施方式中对应的方案的有益效果，此处不再赘述。
附图说明
图1为现有技术中提供的一种LTE网络架构示意图；
图2为现有技术中的协议栈示意图；
图3为本发明实施例提供的一种网络架构示意图一；
图4为本发明实施例提供的一种协议栈示意图一；
图5为本发明实施例提供的一种网络架构示意图二；
图6为本发明实施例提供的一种协议栈示意图二；
图7为本发明实施例提供的一种偶联管理的方法的流程示意图一；
图8为本发明实施例提供的一种偶联管理的方法的流程示意图二；
图9为本发明实施例提供的一种偶联管理的方法的流程示意图三；
图10为本发明实施例提供的一种偶联管理的方法的流程示意图四；
图11为本发明实施例提供的一种偶联管理的方法的流程示意图五；
图12为本发明实施例提供的方法所应用的一种场景；
图13为本发明实施例提供的方法所应用的另一种场景；
图14为本发明实施例提供的另一种偶联管理的方法的流程示意图；
图15为本发明实施例提供的一种第一网络节点的结构示意图；
图16为本发明实施例提供的另一种第一网络节点的结构示意图；
图17为本发明实施例提供的又一种第一网络节点的结构示意图；
图18为本发明实施例提供的一种第二网络节点的结构示意图；
图19为本发明实施例提供的另一种第二网络节点的结构示意图；
图20为本发明实施例提供的又一种第二网络节点的结构示意图；
图21为本发明实施例提供的再一种第一网络节点的一种结构示意图。
具体实施方式
本申请中的术语“多个”是指两个或两个以上。
本申请中的术语“第一”、“第二”等仅是为了区分不同的对象，并不对其顺序进行限定。例如，第一偶联和第二偶联仅仅是为了区分不同的偶联，并不对其先后顺序进行限定。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
如图3所示，图3示出了本发明实施例提供的一种系统架构图，包括：核心网30(例如，如图3中以5G核心网(5G Core Network，5GC)为例)和接入网40(例如，如图3中以5G无线接入网(New Radio Access Network，New RAN)为例)。其中，核心网30包括一个或多个核心网控制面实体和核心网用户面实体。接入网40包括一个或多个接入网实体。
其中，核心网控制面实体可以为：移动性管理网元(例如，接入和移动性管理功能(access and mobility management function，AMF)网元)和核心网用户面实体可以为用户面功能(User Plane Function，UPF)网元。
可以理解的是，核心网控制面实体还可以包括会话管理功能(session management function，SMF)网元。
接入网实体包括一个或多个基站(例如，gNB401、gNB402和ng-eNB403)。其中，任一个AMF与gNB或ng-eNB之间的接口(interface)称为NG接口，该NG接口的控制面可以称为NG控制面(NG control plane，NG-C)，其中，一个NG-C接口上可以建立多个SCTP偶联来进行接口的扩容和负荷分担，任意两个gNB之间的接口为Xn接口。
如图4所示，图4示出了NG接口控制面协议栈，包含传输网络层(transport network layer，TNL)和无线网络层(Radio network layer，RNL)。该TNL包括数据链路层(Data link layer，DLL)、物理层(Physical lay)和IP层，为了保证对于信令消息的可靠传输，该TNL采用基于IP的SCTP(Stream Control Transmission Protocol)协议。RNL采用的应用层信令协议被称为NG应用协议(NG Application Protocol，NGAP)。NGAP中包含两大类消息，一类为UE相关消息(UE-associated signalling)，另一类为公共信令(common signalling)。其中，UE相关消息可以用于UE的会话管理、移动性管理和上下文管理等过程，公共信令可以用于接口管理，基站或核心网设备的配置更新和寻呼消息的下发等。
由于未来接入网可以采用云无线接入网(cloud radio access network，C-RAN)架构来实现，一种可能的方式是将传统基站的协议栈架构和功能分割为两部分，一部分称为集中式节点(Centralized Unit，CU)，另一部分称为分布式节点(Distributed Unit，DU)，而CU和DU的实际部署方式比较灵活，例如多个基站的CU部分集成在一起，组成一个规模较大的功能实体。基于此考虑，本申请提供了RAN内部架构，如图5所示，基站包括CU和DU，其中，CU和DU之间具有CU-DU接口。该CU-DU接口还可以称为F1接口，该CU-DU接口的控制面(Control plane)称为F1-C，该CU-DU 接口的用户面(User plane)称为F1-U。
与NG接口类似，F1-C接口上可以传输两大类消息，一类为UE相关消息(UE-associated signalling)，另一类为公共信令(common signalling)。其中，UE相关消息可以用于UE的会话管理、移动性管理和上下文管理等过程，公共信令可以用于接口管理，CU/DU的配置更新等。
此外，未来的接入网也可以采用NFV技术，从而接入网功能实体也能动态扩容和迁移。因此CU与DU之间的CU-DU接口也有动态扩容和负荷分担的需求，因此也可以通过建立多个SCTP偶联来实现。
如图6所示，图6示出了CU-DU接口控制面协议栈，该协议栈与图4的区别在于图4中的协议栈是基于NG接口，图6是基于F1接口。
可以理解的是，上述图3和图5所示的架构仅是本申请提供的方法所应用的场景的一种示例，并不构成对本申请的限制，本申请提供的技术方案也可以应用于2G、3G和4G通信系统、5G通信系统以及未来的通信系统中任意一个网络节点中两个部件(例如，gNB内的CU和DU)，或接入网控制面实体与核心网控制面实体之间的接口上需要建立多个偶联以及需要对多个偶联进行管理的通信场景中。
如图7所示，图7示出了本发明实施例提供的一种偶联管理的方法，包括：
S101、第一网络节点根据被配置的一个或多个第二网络节点的TNL地址(例如，TNL地址包括一个或多个IP地址和端口号中的至少一项)，与第二网络节点建立第二偶联，该第二偶联为第一网络节点与第二网络节点为第一接口建立的第一个偶联。
可选的，本发明实施例中的第二网络节点的TNL地址可以由操作管理维护(Operations Administration&Maintenance，OAM)单元配置给第一网络节点。这样第一网络节点便可以根据一个或多个第二网络节点的TNL地址中特定(例如，专用于建立主偶联的TNL地址)或任一个第二网络节点的TNL地址与第二网络节点建立第二偶联，为后续实现信令交互作基础。
本发明实施例中的偶联是在两个SCTP端点间的一个对应关系，用以为上层协议提供传输服务。因此，可以为SCTP偶联。
可以理解的是，第一网络节点和第二网络节点之间的第一个偶联(例如第二偶联)建立完成之后，第一网络节点和第二网络节点之间的第一接口(如图3所示的NG接口或如图5所示的CU-DU接口)便可以使用。故第一网络节点和第二网络节点便可以使用该第二偶联传输接口控制面消息。例如，NGAP消息或F1AP消息。示例性地，第一网络节点通过第二偶联发送第一接口控制面建立请求消息(例如，NG Setup Request，F1 Setup Request)，第二网络节点通过第二偶联回复第一接口控制面建立响应消息(例如，NG Setup Response，F1 Setup Response)。
可选地，第一接口控制面建立后，第一网络节点和/或第二网络节点建立第二偶联列表，用于管理第一接口控制面所用的一个或多个偶联。其中，第二偶联列表中包含以下信息中的至少一种：用于建立第二偶联的TNL地址，第二偶联的标识信息。示例性地，第二偶联的标识信息可以为默认标识，如0，或者第二偶联的标识信息可以为OAM配置的。
可选地，第一接口控制面建立后，第一网络节点或第二网络节点指定第二偶联作 为主(primary)偶联。该主偶联是唯一的可以传输公共消息的偶联。该第二偶联包含于第二偶联列表中。
进一步可选的，第一网络节点和/或第二网络节点在第二偶联列表中将第二偶联标识为主偶联。示例性地，在第二偶联列表中增加主偶联标识，并将该主偶联标识与第二偶联相关联。
需要说明的是，本申请将第二偶联指定为主偶联的步骤可以在S102或S105或S107之后执行，本申请对此不进行限定。
S102、第二网络节点通过第一接口控制面(例如，NG-C或F1-C)向第一网络节点发送第一消息，该第一消息用于指示第一网络节点在第一接口上建立第一偶联(该第一偶联也可以称为附加偶联(additional偶联))。
可选地，该第一消息在第二偶联上发送。
可选的，第一消息携带第一偶联列表，该第一偶联列表包括一个或多个用于建立附加偶联的第二网络节点的TNL地址(例如，TNL地址包括一个或多个IP地址和端口号中的至少一项)(为便于描述，下述将称之为第一地址)和与一个或多个第一地址中每个第一地址关联的第一标识中的至少一项(例如，第一消息携带多个第一地址，或第一消息携带多个第一地址关联的第一标识，或第一消息携带多个第一地址和多个第一地址中每个第一地址关联的第一标识)，这样第一网络节点在与一个或多个第一地址中任一个第一地址建立偶联时，便可以将该任一个第一地址关联的第一标识分配给通过该任一个第一地址建立的偶联。
其中，第一偶联列表用于指示根据第一标识确定第一偶联，以及在后续过程中还用于指示根据UE的标识信息确定与UE关联的偶联。
例如，多个第一地址和每个第一地址关联的第一标识的关系为：Add1与index1关联、Add2与index2关联、Add3与index3关联。那么第一网络节点基于Add1与第二网络节点建立偶联1时，便可以为偶联1分配index1。
示例性的，第一消息为NGAP消息中的NG SETUP RESPONSE，AMF CONFIGURATION UPDATE，F1AP中的F1 SETUP RESPONSE，CU CONFIGURATION UPDATE。
S103、第一网络节点根据第一消息携带的第一偶联列表建立与第二网络节点之间的第一偶联，该第一偶联由第一网络节点在第一接口上具有第二偶联之后建立，第一接口为第一网络节点和第二网络节点之间的连接接口。
可以理解的是，本申请中建立第一偶联是在第一接口上具有第二偶联之后建立的，在实际过程中，第一偶联也可以建立在第二偶联之前，此时建立第一偶联的第二网络节点的TNL地址由OAM配置给第一网络节点，当第一偶联是在第一接口上具有第二偶联之后建立，那么建立第一偶联的TNL地址由第二网络节点在第二偶联上发送给第一网络节点。
需要说明的是，本申请中的第一偶联列表包括至少一个偶联。
S104、第一网络节点为第一偶联关联第一标识，以使第一偶联具有第一标识，其中，第一标识用于识别该第一偶联。
作为一种可能的实现方式，第一网络节点可以为第一偶联直接关联第一标识(例 如，第一网络节点可以根据建立的偶联的数量为每个偶联编号，并将每个偶联的编号作为每个偶联各自的第一标识)，也可以将第一消息中携带的与每个第一地址关联的标识作为第一偶联的第一标识。当第一网络节点为第一偶联直接关联第一标识时，第一消息可以仅携带多个第一地址，但是，为了使得第二网络节点也具有第一标识和第一偶联之间的关联关系，以便与对第一偶联的管理，第一网络节点在直接为第一偶联分配第一标识后，还可以将第一标识和第一偶联之间的关联关系发送给第二网络节点。
作为另一种可能的实现方式，当第一偶联为建立在第一接口上的第一个偶联时，第一网络节点为第一偶联关联的第一标识可以由OAM配置，即OAM确定用于建立第一偶联的TNL的地址与第一标识之间的关联关系，这样第一网络节点在第一偶联之后，可以将OAM分配的第一标识与第一偶联关联。
作为一种可能的实现方式，第一标识为与用于建立该第一偶联的第二网络节点的地址关联的标识。这样第一网络节点在为第一偶联分配第一标识之后，即使后续通过该第一标识与第二网络节点之间实现对第一偶联的管理时，该第二网络节点也可以根据该第一标识确定出需要被管理的偶联为第一偶联。
可选地，第一网络节点和/或第二网络节点更新第二偶联列表，使第二偶联列表中包含以下信息中的至少一种：第一偶联的第一地址(即用于建立第一偶联的TNL地址)，第一偶联的第一标识。
本申请提供一种偶联管理的方法，通过在第一接口上具有第二偶联(例如，主偶联)之后，在第一接口再建立第一偶联，以使得第一网络节点和第二网络节点之间的第一接口上具有多个偶联(例如，第一偶联和第二偶联)，这样在第一网络节点和第二网络节点动态扩容或迁移过程中，可以通过建立的多个偶联分担第一网络节点和第二网络节点的负荷，以满足未来的移动通信网络的需求。此外通过为第一偶联分配第一标识(例如，index)，从而可以在后续与第一偶联的相关配置中，仅需要指出第一偶联的标识，而非用建立第一偶联的TNL地址(例如一组或多组IP地址和端口号)来指示第一偶联，由于建立第一偶联的TNL地址通常占得比特数较多，而第一标识所占的比特数通常小于第一偶联的TNL地址所占的比特数，因此当第一接口上有多个偶联并需要对多个偶联进行管理时，可以节省信令开销。
如图8所示，为了实现对第一接口上具有的多个偶联进行管理，本申请提供的方法还包括：
S105、第二网络节点通过第一接口控制面向第一网络节点发送第二消息，该第二消息携带第三偶联的标识，其中，第三偶联的标识用于指示第一网络节点将第三偶联的标识关联的第三偶联作为主偶联；和/或第二消息携带第二偶联的第一标识，第二消息用于指示第一网络节点释放第二偶联。
其中，第二偶联包含于第二偶联列表中。
其中，第三偶联可以为第一接口上已有的多个偶联中的一个，也可以是待建立在第一接口上的一个偶联。
S106、第一网络节点在第一接口控制面上接收第二消息，并根据该第二消息将第二偶联从第二偶联列表中删除和/或在第二偶联列表中将第三偶联标识为主偶联，其中，第二偶联列表中至少具有第二偶联的记录和/或至少具有第三偶联的记录。
可以理解的是，当第三偶联不是第一接口上已有的偶联中的一个，则第一网络节点接收的第二消息中需要携带第三偶联的TNL地址，以便第一网络节点基于第三偶联的TNL地址与第二网络节点建立第三偶联。可选的，将第三偶联的标识和/或第三偶联的TNL地址添加到第二偶联列表中。
可以理解的是，第一网络节点将第三偶联的标识关联的第三偶联作为主偶联指后续用第三偶联来实现主偶联所具备的功能，例如，发送公共信令等。
可选的，如图9所示，本申请提供的方法，还包括：
S107、第二网络节点在第一接口控制面向第一网络节点发送第三消息，该第三消息用于指示第一网络节点从第一接口上具有的多个偶联中选择一个偶联，并将所选择的偶联用于发送或接收特殊接口消息；或第三消息用于指示第一网络节点在第一接口上建立第四偶联，该第四偶联用于发送或接收特殊接口消息。
可选的，第三消息的作用不同，第三消息中携带的内容可能存在差异，本申请中的第三消息携带第三偶联列表，该第三偶联列表可以包括所选择的偶联(第四偶联)的标识和用于建立所选择的偶联(第四偶联)的第二网络节点的TNL地址中的至少一项。当第三消息指示建立第四偶联时，第三偶联列表中至少需携带用于建立第四偶联的第二网络节点的TNL地址。当第三消息用于指示从第一接口上已有的多个偶联中选择一个偶联时，第三偶联列表中可以仅携带所选择的偶联的标识，这样相比于在第三消息中携带用于建立所选择的偶联的第二网络节点的TNL地址可以减少第三消息的信令开销。
示例性地，第四偶联可以用于第一网络节点发送Initial UE message，或第一网络节点接收handover Request message，或第一网络节点发送Path Switch Request message，以及第四偶联可以作为候选的主偶联。
本申请中建立在第一接口上的多个偶联可以具有一个偶联列表，也可以具有不同的偶联列表，即可以将用于实现同一个功能的一个偶联分配一个偶联列表，本申请对此不进行限定。
S108、第一网络节点接收第二网络节点发送的第三消息，该第三消息用于指示第一网络节点从第一接口上具有的偶联中选择一个偶联，其中，所选择的偶联用于发送或接收特殊接口消息或用作候选主偶联或用作主偶联；或，第三消息用于指示第一网络节点在第一接口上建立第四偶联，第四偶联用于发送或接收特殊接口消息或用作候选主偶联或用作主偶联。通过第三消息第一网络节点则可以确定出第一接口上具有的偶联的功能。
可选地，当第一网络节点基于第三消息建立第四偶联时，第一网络节点和/或第二网络节点更新第二偶联列表，使第二偶联列表包含第四偶联的TNL和/或第四偶联的标识。
由于不同偶联上所发送的消息的类别有所差异，因此，为了使得第一网络节点可以知道哪些偶联用于发送接口控制面消息，例如公共信令(common signalling)和特定的UE相关消息(UE-associated signalling)，并且某UE的UE相关信令仅能在某一个偶联上发送，如图10所示，本申请提供的方法还包括：
S109、第一网络节点获取用户设备UE与第五偶联具有的关联关系，该关联关系 用于指示第一网络节点在第五偶联上发送该UE的UE相关信令(又称：特定接口消息)，第五偶联为第一接口上的一个偶联。
本申请通过步骤S109第一网络节点则可以根据UE和偶联之间的关联关系，从而选择与UE关联的偶联(例如，第五偶联)来发送UE相关信令，例如，初始上下文建立消息(initial context setup message)。
作为一种可能的实现方式，本申请中的S109可以通过以下方式实现：
S1091a、第二网络节点向第一网络节点发送UE与第五偶联之间的关联关系。
可选的，第二网络节点可以通过接口消息(例如，第一接口消息)向第一网络节点发送UE与第五偶联之间的关联关系。
示例性的，UE与第五偶联之间的关联关系可以为UE的标识信息与第五偶联的标识之间的关系，其中，UE的标识信息用于识别UE，例如，可以为第一网络节点在第一接口上为UE分配的ID，也可以是第二网络节点在第一接口上为UE分配的ID，或者第一接口上统一的UE ID，本申请对此不作限制。
示例性地，UE与第五偶联之间的关联关系包含以下信息中的一种或多种的组合：UE的标识信息，第五偶联的标识，第五偶联的TNL地址。
示例性地，第一接口消息可以为Initial Context Setup，UE Context Modification，UE Context Modification Indication，UE Context Modification Indication Confirm，UE-SCTPAssociation Binding Update，UE-TNLAssociation Binding Update等。
S1092a、第一网络节点接收第二网络节点发送的UE与第五偶联之间的关联关系。
S1093a、第一网络节点根据接收到的关联关系，获取UE与第五偶联具有的关联关系。第一网络节点在第五偶联上发送和/或接收该UE的UE相关信令。
可选地，第一网络节点和/或第二网络节点存储所述UE与第五偶联之间的关联关系。示例性地，第一网络节点和/或第二网络节点将所述UE与第五偶联之间的关联关系作为所述UE的上下文中的一部分，存储于所述UE的上下文中。
应理解的是，若第二网络节点发送第一接口消息之前，第一网络节点和/或第二网络节点已经存储所述UE与第六偶联之间的关联关系，第六偶联与第五偶联不是同一个偶联，则第一网络节点根据接收到的第二网络节点发送的UE与第五偶联之间的关联关系更新UE关联的偶联，即将与UE关联的偶联由第六偶联更新为第五偶联。
作为另一种可能的实现方式，本申请中的S109还可以通过以下方式实现：
S1091b、第一网络节点在第五偶联上接收到UE的UE相关信令，则将第五偶联与该UE关联，以获取该UE与第五偶联具有的关联关系。
示例性的，第一网络节点在偶联1上发送UE1的相关信令之后，第一网络节点若在偶联2上接收到UE1的相关信令，则将偶联2与UE1关联，即在偶联2上发送后续的UE1的UE相关信令。所述偶联2可以与偶联1相同或不同，此处没有限定。若偶联2与偶联1相同，则第一网络节点保持UE1与偶联1的关联关系，若偶联2与偶联1不同，则第一网络节点将UE1与偶联1的关联关系更新为UE1与偶联2的关联关系。
由于在基于基站间接口(例如在LTE中是X2接口，在5G系统中是Xn接口)的切换过程中，源基站为UE选择目标基站后，源基站会通过与目标基站之间的接口(例 如，Xn接口)向目标基站发送切换请求消息，该切换请求消息中包含UE的上下文，例如为该UE提供服务的核心网控制面实体(例如AMF、MME)的标识，以及该MME为UE分配的基站-核心网控制面实体之间的接口上的UE ID(例如MME UE NGAP ID)。目标基站在接收到源基站发送的切换请求消息后，如果允许UE接入，则会为UE准备和预留相应的资源。而在申请中，基于gNB和AMF之间的NG接口上建立多个SCTP偶联的场景下，本申请中的切换请求消息中还可以包含UE与偶联的关联关系，这样便于目标基站在UE切换至该目标基站后为该UE准备接入资源时，准备好与该UE关联的偶联，以便后续UE接口后，在与该UE关联的偶联上发送该UE的UE相关信令。
因此，作为又一种可能的实现方式，如图11所示，本申请中的S109还可以通过以下方式实现：
S1091c、第二网络节点在第二接口上接收第三网络节点发送的第四消息(例如，切换请求消息)，该第四消息包括UE与第五偶联之间的关联关系，该第五偶联用于指示第三网络节点在第一接口上传输所述UE的UE相关信令，其中，UE为将要切换至第一网络节点的UE。示例性地，所述UE与第五偶联之间的关联关系包括以下信息中的一种或多种的组合：UE的标识信息，第五偶联的标识，第五偶联的TNL地址。所述UE的标识信息可以为：第三网络节点为该UE在第二接口上分配的UE ID，和/或核心网实体在第一接口为该UE分配的UE ID。示例性地，所述第四消息可以为切换请求(Handover Request)消息。
S1092c、第二网络节点向第一网络节点发送第四消息。
S1093c、第一网络节点接收第二网络节点发送的第四消息。
由于在UE从一个基站(例如，源基站)切换至另一个基站(例如，目标基站)的过程中，为了使得目标基站能提前为UE准备资源，故可能伴随偶联的建立以及UE与偶联之间关联关系的改变，而源基站和目标基站可能与同一个AMF交互，也可以与不同的AMF交互，因此，以下将分别结合不同的场景对上述两种情况进行介绍：
一方面，在如图12所示的场景下，即在UE由源基站切换至目标基站的过程中，源基站和目标基站与同一个AMF1交互，因此，源基站和AMF1之间的第一接口和目标基站与AMF1之间的第三接口均属于基站与核心网控制面实体内的接口，因此，本申请中的第三网络节点可以为UE在切换至第一网络节点之前所在的基站，例如，源基站，此时，第一网络节点即为上述所描述的目标基站。
此时，源基站为UE选定目标基站后，通过源基站和目标基站之间的第二接口(例如，Xn)向目标基站发送切换请求消息。
可选地，在图12所示的场景下，切换请求消息中携带该UE在源基站的第一接口(源基站与核心网控制面实体之间的接口)上使用的偶联信息，即切换请求消息携带UE的标识信息和偶联信息之间的关联关系。
具体地，该偶联信息包含：核心网控制面实体的TNL地址(例如IP地址和端口号中的至少一项)和/或第五偶联的标识。示例性地，该偶联信息包含于UE上下文信息UE context information中。
S1094c、第一网络节点根据第四消息，获取该UE与第五偶联之间的关联关系，其中，所述第五偶联为第一网络节点基于第五偶联的TNL地址(第二网络节点侧)在 第三接口上所建立的偶联，UE与第五偶联之间的关联关系用于指示在第三接口上传输该UE的UE相关信令。
示例性的，在图12所示的场景下，切换请求消息中包括核心网控制面实体的TNL地址1，由于第一网络节点和第三网络节点与同一个网络节点通信，因此，第一网络节点可以根据核心网控制面实体的TNL地址1确定在第三接口上是否具有通过核心网控制面实体的TNL地址1建立的偶联，或者根据第五偶联的标识确定在第三接口上是否具有第五偶联的标识所关联的偶联。当第三接口上存在核心网控制面实体的TNL地址1或第五偶联的标识关联的第五偶联，第一网络节点将第三接口上的第五偶联与UE关联，这样在UE从第三网络节点切换至第一网络节点之后，可以利用第五偶联发送第三接口上该UE的UE相关信令。
可选地，本申请在步骤S1094c之后还包括：第一网络节点向UE发送切换指令，该切换指令用于指示UE切换到第一网络节点，这样UE便可以根据切换指令从源基站切换至第一网络节点。第一网络节点通过第三接口向第二网络节点发送针对该UE的路径切换请求，该路径切换请求用于指示第二网络节点将UE的控制面连接和用户面连接由第三网络节点切换到第一网络节点。
可选的，在执行第一网络节点通过第三接口向第二网络节点发送针对该UE的路径切换请求时，若第一网络节点保存了UE和第五偶联之间的关联关系，则第一网络节点可以通过第五偶联发送路径切换请求。若此时第一网络节点未保存UE和某一偶联之间的关联关系，这样，第一网络节点可以从第三接口具有的多个偶联中选择一个偶联(例如特殊偶联列表中选择用于发送path switch消息的偶联)与该UE关联，以发送该UE的路径切换请求或发送后续该UE的UE相关信令。
可选的，第二网络节点在接收到第一网络节点发送的路径切换请求后，通过第三接口向第一网络节点发送路径切换请求响应。
可选的，一方面，该路径切换请求响应中携带UE和某一偶联之间的关联关系，则第一网络节点在接收到该UE和某一偶联之间的关联关系后，可以建立或更新原有的UE和偶联的关联关系。
示例性的，1、在第一网络节点未建立UE和偶联之间的关联关系的情况下(例如切换请求中不包含该UE与第五偶联的关联关系)：第一网络节点在接收到路径切换请求响应中的UE和偶联1之间的关联关系后，则在该UE的上下文中新建立UE和偶联1之间的关联关系。2、在第一网络节点已建立UE和偶联2之间的关联关系的情况下：a、若第一网络节点确定路径切换请求响应中和UE关联的偶联为偶联1，则第一网络节点将原记录的UE和偶联2之间的关联关系变更为UE和偶联1。3、若第一网络节点确定接收路径切换请求响应消息的偶联和发送路径切换请求的偶联不是同一个偶联，则将收到该路径切换请求响应消息的偶联作为与该UE关联的偶联，并基于此建立或更新该UE和偶联的关联关系，例如，第一网络节点在偶联1(此偶联1可以是与UE关联的，也可以是第一网络节点从多个偶联中所选择的)上发送路径切换请求，但是在偶联2上接收到路径切换请求响应消息，则将偶联2与UE关联。
另一方面，在如图13所示的场景下，图13与图12的区别在于，在图12中源基站(例如，第三网络节点)和目标基站(例如，第一网络节点)与同一个核心网控制 面实体相连，例如，第二网络节点，即源基站和目标基站分别与AMF1之间存在第一接口和第三接口。而在图13所示的场景中，源基站和目标基站分别与不同的核心网控制面实体相连，即源基站与AMF2之间存在第一接口，目标基站(第一网络节点)与AMF1(第二网络节点/第三网络节点)之间存在第三接口。在图13所示的场景下，在UE将要由源基站切换至目标基站之前，由目标基站对应的AMF1向目标基站指定与该UE关联的偶联，并将所确定的关联关系发给目标基站。
因此，在图13所示的场景下，第三网络节点即为第二网络节点。
具体流程为：源基站将切换要求(Handover Required)消息发送给源核心网控制面实体，源核心网控制面实体将重配置请求(Relocation Request)消息(或者是具有和重配置请求消息功能类似的其他消息，名称不做限定)发送给第三网络节点(目标核心网控制面实体)；目标核心网控制面实体(即目标基站对应的核心网控制面实体)将切换请求消息发送给目标基站；目标基站收到上述切换请求消息后，若确定接纳该UE则回复切换请求响应。
可选地，该切换请求消息中携带目标核心网控制面实体为该UE指定的偶联信息。具体的，该偶联信息包含：建立该指定的偶联的TNL地址(例如目标核心网控制面实体侧的某一TNL地址)和偶联的标识中至少一项。
可选的，若切换请求消息中携带指定的偶联信息，则目标基站建立该UE和指定的偶联信息所关联的偶联之间的关联关系；或者，若目标基站在某一偶联上收到该切换请求消息，则将接收该切换请求消息的偶联(例如，第五偶联)作为该UE的关联偶联，并建立该UE与第五偶联之间的关联关系，目标基站在建立UE和偶联之间的关联关系后，利用与UE关联的偶联发送切换请求响应。
可选的，该切换请求响应用于指示UE可以切换至目标基站中。此外，UE接入目标基站后，目标基站向目标核心网控制面实体发送切换确认消息。若此时目标基站中已经建立了UE与偶联的关联关系，则在与该UE关联的偶联上发送切换确认消息。若此时目标基站中未建立UE和偶联之间的关联关系，则目标基站可以从第一接口的多个偶联中选择一个偶联作为与该UE关联的偶联(例如从特殊偶联列表中选择用于发送切换确认消息的偶联)，用该偶联发送切换确认消息。
可选的，目标核心网实体发送用于指示变更该UE-SCTP偶联的关联关系的消息。
此外，在图12和图13所示的场景下，本申请中的S102之前，本发明实施例提供的方法还包括：
S110、第一网络节点接收第三网络节点发送的切换请求消息，该切换请求消息包括UE与第五偶联具有的关联关系，其中，UE为将要切换至第一网络节点的UE，其中，第五偶联为UE在切换至第一网络节点之前所使用的偶联。可以理解的，在图13所示的场景下，第一网络节点为目标基站，第三网络节点为AMF2。示例性地，UE与第五偶联具有的关联关系可以包含以下信息中的一种或多种的组合：UE的标识信息，用于建立第五偶联的TNL地址，第五偶联的标识信息。
S111、当未建立第五偶联，第一网络节点向第二网络节点发送第三消息，该第三消息用于指示在第三接口上建立第五偶联。当在S102之前增加S110和S111时，即本申请中S102中的第一消息可以由第二网络节点在第三消息的触发下发送，此时第一 偶联的建立是基于第一网络节点的需求触发，在S102之前不增加S110和S111时第二网络节点可以自己根据需要决定是否需要通知第一网络节点建立第一偶联。
可以理解的是，上述实施例中的第一网络节点可以为如图3所示的gNB，第二网络节点与也可以为如图3所示的AMF，第一接口和第三接口可以为NG-C；第一网络节点还可以为如图5所示的DU，第二网络节点还可以为如图5所示的CU，第一接口和第三接口还可以为F1-C。
由于在实际过程中，在图3和图5所示的场景下，建立在第一接口和第三接口上的多个偶联可能存在association failure，若不及时在偶联列表中更新偶联的状态，可能会导致在通过某一偶联发送消息时出现错误，因此，本申请还提供一种偶联管理的方法，该方法应用于第一网络节点中，该第一网络节点包括传输层处理单元和无线层处理单元，所述传输层处理单元和无线层处理单元用于第一网络节点与第二网络节点之间的第一接口的传输。如图14所示该方法包括：
S201、传输层处理单元检测第一接口上具有的多个偶联中每个偶联的通信状态。
S202、传输层处理单元在确定多个偶联中存在第一偶联具有传输故障，则向无线层处理单元反馈第一偶联有传输故障。
可选的，步骤S202具体可以通过以下方式实现：传输层处理单元在检测到多个偶联中的第一偶联有传输故障，传输层处理单元向无线层处理单元发送第一消息，该第一消息包括第一偶联的地址和第一偶联的标识中至少一项，第一消息用于反馈第一偶联有传输故障，第一偶联的地址和/或标识用于识别第一偶联。
S203、无线层处理单元接收来自传输层处理单元的第一偶联有传输故障的反馈。
S204、无线层处理单元根据第一偶联有传输故障的反馈，将第一偶联从第二偶联列表中删除，该第二偶联列表中至少具有第一偶联的记录，第一偶联为第一接口具有的多个偶联中的一个偶联，第一接口为第一网络节点和第二网络节点之间的连接接口。
本发明实施例中的第二偶联列表中至少记录有第一偶联和第一标识之间的关联关系。
可选地，第一网络节点获取与第一偶联关联的第一UE的标识信息，并将第一UE与第一偶联的关联关系删除。示例性地，第二偶联列表中包含与第一偶联关联的UE的标识信息。第一网络节点在第一UE的上下文信息中删除第一UE与第一偶联的关联关系。
进一步可选的，第一网络节点选取第二偶联作为与第一UE的关联偶联。示例性地，第一网络节点将第一UE与第二偶联的关联关系存储在第一UE的上下文中。可以理解的，第二偶联为第一接口上除第一偶联外的其它偶联，并且第二偶联可能包含于某一特殊偶联列表中(例如从特殊偶联列表中选择用于发送Initial UE message的偶联)。
本发明实施例中通过传输层处理单元在检测到多个偶联中存在第一偶联发生失败时，并将该第一偶联的发生失败的上报给无线层处理单元，这样无线层处理单元便可以将第一偶联的记录从第一偶联列表中删除，从而实现对偶联的管理，且由于第一接口上建立有多个偶联，仅当一个偶联发生失败时并不会影响第一接口失败，第一网络节点和第二网络节点还可以在除第一偶联之外的其余偶联上发送控制消息。
可以理解的是，本申请中的第一网络节点可以为gNB或DU，也可以为AMF或CU。如图4和图6可以知道gNB、DU、AMF和CU均具有传输层处理单元(TNL)和无线层处理单元(RNL)。
可选的，本申请提供的方法，还包括：
S205、传输层处理单元在检测到多个偶联均有传输故障或第三偶联具有传输故障时，向无线层处理单元反馈多个偶联均有传输故障或第三偶联具有传输故障，其中，第三偶联为第一接口上具有的多个偶联中的一个偶联，该偶联用于传输公共信令。
S206、当传输层处理单元向无线层处理单元上报第一接口上具有的多个偶联均有传输故障或第二偶联具有传输故障时，无线层处理单元确定第一接口失败。
此外，为了使得第二网络节点也可以在某一偶联具有传输故障后，及时将该偶联的信息删掉，本申请还包括：
S207、无线层处理单元向对侧无线层处理单元发送第二消息，该第二消息用于指示对侧无线层处理单元将第一偶联从第三偶联列表中删除，第三偶联列表中至少具有第一偶联的记录，对侧无线层处理单元位于第二网络节点上。
S208、对侧无线层处理单元在第二偶联列表中删除第一偶联的记录。这样第二网络节点也可以及时的删除发生失败的第一偶联。
本申请中第二网络节点可以为gNB或DU，也可以为AMF或CU，具体的，当第一网络节点为gNB或DU时，第二网络节点为AMF或CU，当第一网络节点为AMF或CU时，第二网络节点为gNB或DU。
可选的，为了避免将第一偶联的记录删除后，但是第一网络节点和/或第二网络节点中仍然具有和第一偶联关联的UE的关联关系，因此，本申请提供的方法还包括：
S209、第一网络节点和/或第二网络节点无线层处理单元删除第一偶联与目标用户设备UE具有的关联关系，目标UE为与第一偶联关联的至少一个UE。
可选的，在步骤S209之后，本申请提供的方法还包括：
S210、第一网络节点和/或第二网络节点无线层处理单元在接收到目标UE的UE相关信令时，将第三偶联与目标UE关联，第三偶联为第一接口上具有的一个偶联。在执行完步骤S210之后，第一网络节点和/或第二网络节点无线层处理单元还可以向对侧无线层处理单元发送第三消息，该第三消息包括第三偶联与目标UE之间的关联关系，可能伴随第二网络节点将原记录的目标UE与一个偶联之间的关联关系变更为第三偶联与目标UE。
可选的，若第二网络节点(AMF)的RNL收到指示，则发送接口消息指示相关UE与SCTP偶联的关联关系改变，该接口消息可以批量指示与某SCTP偶联关联的UE的关联偶联变为另外一个偶联。另外，该接口消息可以在指示对端偶联失败的消息中一块发送。
需要说明的是，本申请中提供的方法步骤S201-S210可以和上述实施例中为第一偶联分配第一标识之后执行，也可以单独执行，本申请现以步骤S201-S210单独执行为例进行说明。
上述主要从各个网元之间交互的角度对本申请提供的方案进行了介绍。可以理解的是，各个网元，例如第一网络节点、第二网络节点等为了实现上述功能，其包含了 执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
本申请可以根据上述方法示例对第一网络节点、第二网络节点等进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
为了描述方便，本申请在介绍第一网络节点和第二网络节点的结构时，以第一网络节点为gNB为例，以第二网络节点为AMF为例。
在采用集成的单元的情况下，图15示出了上述实施例中所涉及的第一网络节点的一种可能的结构示意图。第一网络节点包括：建立单元101和关联单元102。其中，建立单元101用于支持第一网络节点执行上述实施例中的步骤S101和S103；关联单元102用于支持第一网络节点执行上述实施例中的步骤S104。此外，本申请提供的第一网络节点还包括：接收单元103以及获取单元104，其中，接收单元103用于支持第二网络节点执行上述实施例中的S106、S108、S1092a、S1091c、S1093c以及S110；获取单元104用于支持第一网络节点执行上述实施例中的步骤S109以及S1093a、S1091b、S1092c以及S1094c。此外，第一网络节点还可以包括发送单元105，用于支持第一网络节点执行上述实施例中的S111。和/或用于本文所描述的技术的其它过程。上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在采用硬件实现的基础上，本申请中的接收单元103可以为第一网络节点的接收器，发送单元105可以为第一网络节点的发送器，通常可以将接收器和收发器集成在一起用作收发器，具体的接收单元103和发送单元105可以为第一网络节点的通信接口，建立单元101和关联单元102和获取单元104可以集成在第一网络节点的处理器中。
在采用集成的单元的情况下，图16示出了上述实施例中所涉及的第一网络节点的一种可能的逻辑结构示意图。第一网络节点包括：处理模块112和通信模块113。处理模块112用于对第一网络节点动作进行控制管理，例如，处理模块112用于支持第一网络节点执行上述实施例中的步骤S101和S103，步骤S104、S109以及S1093a、S1091b、S1092c以及S1094c；通信模块113用于支持第一网络节点执行上述实施例中的步骤S106、S108、S1092a、S1091c、S1093c以及S110、S111。和/或用于本文所描述的技术的其他过程。第一网络节点还可以包括存储模块111，用于存储第一网络节点的程序代码和数据。
其中，处理模块112可以是处理器或控制器，例如可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器 件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。通信模块113可以是收发器、收发电路或通信接口等。存储模块111可以是存储器。
当处理模块112为处理器120，通信模块113为通信接口130或收发器时，存储模块111为存储器140时，本申请所涉及的第一网络节点可以为图17所示的设备。
其中，通信接口130、处理器120以及存储器140通过总线110相互连接；总线110可以是PCI总线或EISA总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图17中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。其中，存储器140用于存储第一网络节点的程序代码和数据。通信接口130用于支持第一网络节点与其他设备(例如，第二网络节点)通信，处理器120用于支持第一网络节点执行存储器140中存储的程序代码和数据以实现本申请提供的一种偶联管理的方法。
在采用集成的单元的情况下，图18示出了上述实施例中所涉及的第二网络节点的一种可能的结构示意图。第二网络节点包括：发送单元201。发送单元201用于支持第二网络节点执行上述实施例中的步骤S102、S105、S107、S1091a。发送单元202用于支持第一网络节点执行上述实施例中的步骤S103、S106。和/或用于本文所描述的技术的其它过程。上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在采用硬件实现的基础上，本申请中的发送单元201可以为第二网络节点的发送器，通常情况下，第二网络节点中还包括接收器，可以将接收器和收发器集成在一起用作收发器，具体的发送单元201可以为第一网络节点的通信接口。
在采用集成的单元的情况下，图19示出了上述实施例中所涉及的第二网络节点的一种可能的逻辑结构示意图。第二网络节点包括：处理模块212和通信模块213。处理模块212用于对第二网络节点动作进行控制管理，例如，处理模块212用于支持第二网络节点通过通信模块213执行上述实施例中的步骤S102、S105、S107、S1091a。第一网络节点还可以包括存储模块211，用于存储第二网络节点的程序代码和数据。
其中，处理模块212可以是处理器或控制器，例如可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。通信模块213可以是收发器、收发电路或通信接口等。存储模块211可以是存储器。
当处理模块212为处理器220，通信模块213为通信接口230或收发器时，存储模块211为存储器210时，本申请所涉及的第二网络节点可以为图20所示的设备。
其中，通信接口230、处理器220以及存储器210通过总线200相互连接；总线200可以是PCI总线或EISA总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图20中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。其中，存储器210用于存储第二网络节点的程序代码和数据。通信接口230用于支持 第二网络节点与其他设备(例如，第一网络节点)通信，处理器220用于支持第二网络节点执行存储器210中存储的程序代码和数据以实现本申请提供的一种偶联管理的方法。
在采用集成的单元的情况下，图21示出了上述实施例中所涉及的第一网络节点的一种可能的结构示意图。该第一网络节点可以为gNB，也可以为AMF。第一网络节点包括：传输层处理单元301和无线层处理单元302。其中，传输层处理单元301用于支持第一网络节点执行上述实施例中的步骤S201、S202、S205；无线层处理单元302用于支持第一网络节点执行上述实施例中的步骤S203、S204以及S206以及S207、S209、S210。和/或用于本文所描述的技术的其它过程。上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本发明的另一实施例中，还提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机执行指令，当第一网络节点的至少一个处理器执行该计算机执行指令时，第一网络节点执行上述实施例中的步骤S101和S103、S104、S109、S1093a、S1091b、S1092c、S106、S108、S1092a、S110、S1093c、S1094c以及S111或者当第二网络节点的至少一个处理器执行该计算机执行指令时，第二网络节点执行上述实施例中的S102、S105、S107、S1091a，或者执行S201、S202、S203、S204、S205、S206、S207、S208、S209以及S210。
在本发明的另一实施例中，还提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中；第一网络节点的至少一个处理器可以从计算机可读存储介质读取该计算机执行指令，第一网络节点的至少一个处理器执行该计算机执行指令，以使得第一网络节点执行上述实施例中的步骤S101和S103、S104、S109、S1093a、S1091b、S1092c、S106、S108、S1092a、S1091c、S110、S1093c、S1094c以及S111或者当第二网络节点的至少一个处理器执行该计算机执行指令时，第二网络节点执行上述实施例中的S102、S105、S107、S1091a，或者执行S201、S202、S203、S204、S205、S206、S207、S208、S209以及S210。
在本发明的另一实施例中，还提供一种通信系统，该通信系统包括一个或多个第二网络节点，和一个或多个第一网络节点，其中，一个或多个第一网络节点中的任意一个第一网络节点与一个或多个第二网络节点中的一个第二网络节点之间具有第一接口。具体的该通信系统可以为基站。
上述提供的任一种装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或 无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (23)

  1. 一种偶联管理的方法，其特征在于，包括：
    第一网络节点为第一接口建立与第二网络节点之间的第一偶联，所述第一接口为所述第一网络节点和所述第二网络节点之间的连接接口；
    所述第一网络节点为所述第一偶联关联第一标识，所述第一标识用于识别所述第一偶联。
  2. 根据权利要求1所述的一种偶联管理的方法，其特征在于，所述第一网络节点为第一接口建立与第二网络节点之间的第一偶联，包括：
    所述第一网络节点根据预配置表，为所述第一接口建立所述第一偶联，所述预配置表包括用于建立所述第一偶联的地址以及与所述地址关联的第一标识中的至少一项。
  3. 根据权利要求1所述的一种偶联管理的方法，其特征在于，所述第一网络节点建立所述第一偶联时，所述第一接口上已具有第二偶联，所述第一网络节点为第一接口建立与第二网络节点之间的第一偶联，包括：
    所述第一网络节点在所述第二偶联上接收所述第二网络节点发送的第一偶联列表，所述第一偶联列表包括用于建立所述第一偶联的地址以及与所述地址关联的第一标识中的至少一项；
    所述第一网络节点根据所述第一偶联列表，为所述第一接口建立与所述第二网络节点之间的所述第一偶联。
  4. 根据权利要求1-3任一项所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第一网络节点接收所述第二网络节点发送的第一消息，所述第一消息携带被释放偶联的标识，所述第一消息用于指示所述第一网络节点释放所述被释放偶联的标识所关联的偶联。
  5. 根据权利要求1-4任一项所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第一网络节点接收所述第二网络节点发送的第二消息，所述第二消息携带第三偶联的标识，所述第二消息用于指示所述第一网络节点将所述第三偶联的标识关联的第三偶联作为主偶联，所述主偶联用于传输所述第一接口的公共信令。
  6. 根据权利要求1-5任一项所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第一网络节点接收所述第二网络节点发送的第三消息，所述第三消息中包括第二偶联列表，所述第二偶联列表包括至少一个第一标识，所述至少一个第一标识用于指示将所述至少一个第一标识关联的偶联用于发送或接收特殊接口消息，或者所述至少一个第一标识用于指示所述第一网络节点将所述至少一个第一标识关联的偶联用作候选主偶联。
  7. 根据权利要求1-6任一项所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第一网络节点接收所述第二网络节点发送的第四消息，所述第四消息包括第三偶联列表，所述第三偶联列表包括至少一个第一地址和与所述至少一个第一地址中 每个第一地址关联的第一标识，所述至少一个第一地址用于所述第一网络节点为所述第一接口建立第四偶联，所述第四偶联用于发送或接收特殊接口消息或用作候选主偶联。
  8. 根据权利要求6或7所述的一种偶联管理的方法，其特征在于，所述特殊接口消息包括以下消息中任一项：initial UE message，HO request message，triangular redirection消息和path switch request消息。
  9. 根据权利要求1-8任一项所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第一网络节点获取用户设备UE与第五偶联的关联关系，所述关联关系用于指示所述第一网络节点在所述第五偶联上发送所述UE的UE相关信令，所述第五偶联为所述第一接口上的偶联，所述关联关系包括以下信息中的至少一项：所述UE的标识与所述第五偶联的第二标识之间的关系，和所述UE的标识与用于建立所述第五偶联的地址之间的关系。
  10. 根据权利要求9所述的一种偶联管理的方法，其特征在于，所述第一网络节点获取用户设备UE与第五偶联的关联关系，包括：
    所述第一网络节点接收所述第二网络节点发送的所述UE与所述第五偶联的关联关系；或，
    所述第一网络节点在所述第五偶联上接收到所述UE的UE相关信令，则获取所述UE与所述第五偶联的关联关系；或，
    所述第一网络节点接收第三网络节点发送的第五消息，所述第五消息用于指示所述UE切换至所述第一网络节点，所述第五消息包括第二地址，所述第二地址为用于建立所述第五偶联的地址。
  11. 根据权利要求9或10所述的一种偶联管理的方法，其特征在于，所述第一网络节点获取用户设备UE与第五偶联的关联关系之后，所述方法包括：
    所述第一网络节点根据所述UE与第五偶联的关联关系，建立所述第五偶联。
  12. 根据权利要求9-11任一项所述的一种偶联管理的方法，其特征在于，所述第一网络节点获取用户设备UE与第五偶联的关联关系之后，所述方法包括：
    所述第一网络节点将所述UE与第五偶联的关联关系存储在偶联列表中。
  13. 一种偶联管理的方法，其特征在于，包括：
    第二网络节点通过第二偶联向第一网络节点发送第一偶联列表，所述第一偶联列表包括用于建立第一偶联的地址以及与所述地址关联的第一标识中的至少一项，所述第二偶联为所述第一接口上用于传输公共信令的偶联。
  14. 根据权利要求13所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第二网络节点向所述第一网络节点发送第二消息，所述第二消息携带被释放偶联的标识，所述第一消息用于指示所述第一网络节点释放所述被释放偶联的标识所关联的偶联。
  15. 根据权利要求13或14所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第二网络节点向所述第一网络节点发送第三消息，所述第三消息携带第三偶 联的标识，所述第二消息用于指示所述第一网络节点将所述第三偶联的标识关联的第三偶联作为主偶联，所述主偶联用于传输所述第一接口的公共信令。
  16. 根据权利要求13-15任一项所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第二网络节点向所述第一网络节点发送第四消息，所述第四消息包括第二偶联列表，所述第二偶联列表包括至少一个第一标识，所述至少一个第一标识用于指示所述第一网络节点将所述至少一个第一标识关联的偶联用于发送或接收特殊接口消息，或者所述至少一个第一标识用于指示所述第一网络节点将所述至少一个第一标识关联的偶联用作候选主偶联。
  17. 根据权利要求13-16任一项所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第二网络节点向所述第一网络节点发送第五消息，所述第五消息包括第三偶联列表，所述第三偶联列表包括至少一个第一地址和与所述至少一个第一地址中每个第一地址关联的第一标识，所述至少一个第一地址用于所述第一网络节点为所述第一接口建立第四偶联，所述第四偶联用于发送或接收特殊接口消息或用作候选主偶联。
  18. 根据权利要求13-17任一项所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述第二网络节点向所述第一网络节点发送UE与第五偶联的关联关系，所述关联关系用于指示所述第一网络节点在所述第五偶联上发送所述UE的UE相关信令，所述第五偶联为所述第一接口上的偶联，所述关联关系包括以下信息中的至少一项：所述UE的标识与所述第五偶联的第二标识之间的关系，和所述UE的标识与用于建立所述第五偶联的地址之间的关系。
  19. 一种偶联管理的方法，其特征在于，应用于第一网络节点中，所述第一网络节点包括传输层处理单元和无线层处理单元，所述传输层处理单元和无线层处理单元用于第一接口控制面上，所述第一接口为所述第一网络节点和第二网络节点之间的连接接口，所述第一接口上具有多个偶联，所述第一网络节点存储有第一偶联列表，所述第一偶联列表包括所述多个偶联的相关信息，所述方法包括：
    所述无线层处理单元接收来自所述传输层处理单元发送的第一消息，所述第一消息包括所述第一偶联的标识和用于建立所述第一偶联的地址中的至少一项，所述第一消息用于指示所述第一偶联有传输故障；所述第一偶联为所述多个偶联中的一个偶联；
    所述无线层处理单元根据所述第一消息，从所述第一偶联列表中删除所述第一偶联的相关信息，所述相关信息包括以下信息中的至少一项：偶联的标识、用于建立所述偶联的地址、和与所述偶联关联的用户设备UE的标识。
  20. 根据权利要求19所述的一种偶联管理的方法，其特征在于，所述无线层处理单元确定所述第一偶联为所述第一接口的主偶联；或者，所述第一偶联为所述第一偶联列表中的唯一的偶联，所述无线层处理单元确定所述第一接口失败，所述主偶联用于传输所述第一接口的公共信令。
  21. 根据权利要求19或20所述的一种偶联管理的方法，其特征在于，所述方法还包括：
    所述无线层处理单元向对侧无线层处理单元发送第二消息，所述第一消息用于指示所述对侧无线层处理单元将所述第一偶联从第二偶联列表中删除，所述第二偶联列表中至少具有所述第一偶联的相关信息，所述对侧无线层处理单元位于所述第二网络节点上。
  22. 一种网络节点，其特征在于，包括：存储器、处理器、总线和通信接口，存储器中存储代码和数据，处理器与存储器通过总线连接，所述处理器运行存储器中的代码使得所述第一网络节点执行如权利要求1至12任一项所述的偶联管理的方法或权利要求19至20任一项所述的一种偶联管理的方法或权利要求13至18任一项所述的一种偶联管理的方法。
  23. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，当该程序在第一网络节点上运行时，使得如权利要求1至12任一项所述的一种偶联管理的方法或权利要求19至20任一项所述的一种偶联管理的方法或权利要求13至18任一项所述的一种偶联管理的方法被执行。
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109688631B (zh) * 2017-10-19 2021-11-19 中国移动通信有限公司研究院 一种连接处理方法和设备
US20220201777A1 (en) * 2018-08-23 2022-06-23 Telefonaktiebolaget Lm Ericsson (Publ) Enhanced Handover of Nodes in Integrated Access Backhaul (IAB) Networks - Control Plane (CP) Handling
CN112055035B (zh) * 2019-06-05 2021-10-29 大唐移动通信设备有限公司 一种ng接口的建立方法及装置
CN112929896B (zh) * 2019-12-05 2022-06-28 大唐移动通信设备有限公司 一种信息传输方法及装置
CN113364721B (zh) * 2020-03-04 2023-06-30 大唐移动通信设备有限公司 一种sctp连接管理方法及装置
US12052131B2 (en) 2022-11-08 2024-07-30 T-Mobile Usa, Inc. Multi-dimensional correlation for network incident management

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101237672A (zh) * 2007-01-29 2008-08-06 华为技术有限公司 一种演进网络中建立s1信令连接的方法、装置及系统
US20150256436A1 (en) * 2014-03-04 2015-09-10 Connectem Inc. Method and system for seamless sctp failover between sctp servers running on different machines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101242354B (zh) * 2007-02-09 2011-01-05 华为技术有限公司 一种数据传输的方法、系统及设备
US8307097B2 (en) * 2009-12-18 2012-11-06 Tektronix, Inc. System and method for automatic discovery of topology in an LTE/SAE network
JP5952427B2 (ja) * 2012-01-11 2016-07-13 インターデイジタル パテント ホールディングス インコーポレイテッド Ｓｔａとｉｅｅｅ８０２．１１ネットワークのアクセスポイントの間の加速されたリンクセットアップのための方法および装置
CN103024100B (zh) * 2012-12-31 2015-07-08 华为技术有限公司 一种建立偶联的方法和域名系统服务器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101237672A (zh) * 2007-01-29 2008-08-06 华为技术有限公司 一种演进网络中建立s1信令连接的方法、装置及系统
US20150256436A1 (en) * 2014-03-04 2015-09-10 Connectem Inc. Method and system for seamless sctp failover between sctp servers running on different machines

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "Signalling Transport of the NG-C interface", 3GPP TSG-RAN WG3 NR ADHOC MEETING #2 R3-172526, no. R3-172526, 29 June 2017 (2017-06-29), XP051307835 *
QUALCOMM INCORPORATED: "Supporting multiple SCTP associations towards the AMF", 3GPP TSG-RAN WG3 NR#2 ADHOC R3-172446, no. R3-172446, 29 June 2017 (2017-06-29), XP051308082 *
See also references of EP3570491A4

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