WO2020057416A1 - 信令传输的接口兼容方法及装置 - Google Patents

信令传输的接口兼容方法及装置 Download PDF

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Publication number
WO2020057416A1
WO2020057416A1 PCT/CN2019/105388 CN2019105388W WO2020057416A1 WO 2020057416 A1 WO2020057416 A1 WO 2020057416A1 CN 2019105388 W CN2019105388 W CN 2019105388W WO 2020057416 A1 WO2020057416 A1 WO 2020057416A1
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Prior art keywords
network element
function network
management function
access
mobility management
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PCT/CN2019/105388
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English (en)
French (fr)
Inventor
曹龙雨
于益俊
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华为技术有限公司
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Priority to EP19862043.7A priority Critical patent/EP3840263B1/en
Publication of WO2020057416A1 publication Critical patent/WO2020057416A1/zh
Priority to US17/197,546 priority patent/US11937336B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • 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
    • H04W8/14—Mobility data transfer between corresponding nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H04L1/003—Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • 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
    • H04W8/06—Registration at serving network Location Register, VLR or user mobility server
    • H04W8/065—Registration at serving network Location Register, VLR or user mobility server involving selection of the user mobility server
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/14—Backbone network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/24—Interfaces between hierarchically similar devices between backbone network devices

Definitions

  • the present application relates to the field of communication technologies, and in particular, to an interface compatible method and device for signaling transmission.
  • the 3rd Generation Partnership Project (3GPP) standard defines the service-oriented architecture of the core network in the 5th-Generation (5G) communication. Among them, the control plane function of the 5G core network is decomposed into multiple functional network elements (NFs), and each functional network element performs signaling transmission through a service-oriented interface. In addition, the 3GGP standard also defines the 5G core network The access and mobility management function network element (AMF) and the radio access network (RAN) communicate through a non-service interface based on the NGAP protocol (NG application layer protocol). Order transmission.
  • NGAP protocol NG application layer protocol
  • the processing of the communication protocol between the core network and the wireless access network is relatively complicated, which will cause the transmission efficiency of signaling to be low, which will cause a large delay in signaling transmission, or even fail to transmit signaling normally.
  • This application provides an interface compatible method and device for signaling transmission, which solves the problem that the signaling transmission efficiency is low due to the complicated processing of the communication protocol between the core network and the wireless access network, and even the signaling cannot be transmitted normally. .
  • this application provides an interface-compatible method for signaling transmission, including:
  • the first network element acquires capability information of an access and mobility management function network element (for example, an AMF network element), and the capability information is used to indicate that the access and mobility management function network element has a target interface function network element and wireless access Network transmission signaling capabilities.
  • the first network element selects a target interface function network element according to the capability information, and the target interface function network element is used for transmission of signaling between the access and mobility management function network element and the radio access network.
  • the first network element obtains the capability information of the access and mobility management function network element, and selects the corresponding target interface function network element according to the capability information, so that the first network element can communicate with the target interface function network element through
  • the core network access and mobility management function network elements perform signaling transmission to ensure that signaling can be normally transmitted between the wireless access network and the core network.
  • the first network element acquiring the capability information of the access and mobility management function network element includes: the first network element sends a request to the second network element information.
  • the first network element receives capability information from the second network element.
  • the first network element obtains the capability information of the access and mobility management function network element from the second network element. Therefore, the first network element can select the target interface function network element according to the capability information and pass the target interface function network.
  • the element performs signaling transmission with the access and mobility management function network elements of the core network to ensure normal transmission of signaling between the radio access network and the core network.
  • obtaining, by the first network element, the capability information of the access and mobility management function network element includes: the first network element sends a request to the second network element information.
  • the first network element receives identification information of the mobility management function network element from the second network element.
  • the first network element obtains capability information from the first network element according to the identification information.
  • the first network element obtains the capability information of the access and mobility management function network element from the first network element, so that the first network element can select the corresponding target interface function network element according to the capability information, and pass the target interface
  • the functional network element performs signaling transmission with the access and mobility management function network element to ensure that signaling can be normally transmitted between the first network element and the mobility management function network element.
  • the first network element acquiring the capability information of the access and mobility management function network element includes: the first network element sends a request to the second network element information.
  • the first network element receives identification information of the mobility management function network element from the second network element.
  • the first network element sends identification information to a third network element.
  • the first network element receives capability information from a third network element.
  • the first network element obtains the capability information of the access and mobility management function network element from the third network element. Therefore, the first network element can select the target interface function network element according to the capability information and pass the target interface function network.
  • the unit performs signaling transmission with the access and mobility management function network elements to ensure normal transmission of signaling between the radio access network and the core network.
  • the first network element is a wireless network management function network element (for example, radio network management function, RNMF network element)
  • the third network element is a non-service interface function network element (for example, an N2 interface function network element).
  • the first network element is a radio resource control network element (for example, a radio resource control, RRC network element), and the third network element is a non-service interface function network element or a wireless network management function network element.
  • the first network element is a non-service interface function network element
  • the third network element is a wireless network management function network element. Therefore, the first network element and the third network element have multiple combination modes, which can be flexibly deployed to ensure normal signaling transmission between the radio access network and the core network under various networking situations.
  • the first network element selects a target interface according to the capability information
  • Functional network element including: capability information used to indicate that the access and mobility management functional network element has the capability to transmit signaling to the wireless access network through the non-service interface functional network element, and the first network element selects the non-service interface function
  • the network element functions as the target interface network element.
  • the capability information is used to indicate that the access and mobility management function network element has the capability to transmit signaling to the radio access network through the wireless network management function network element.
  • the first network element selects the wireless network management function network element as the target interface function. Network element.
  • the capability information is used to indicate that the access and mobility management function network element has the capability to transmit signaling to the radio access network through at least one of the non-service interface function network element or the wireless network management function network element, the first network element Select a non-service interface function network element or a wireless network management function network element as the target interface function network element. Therefore, the first network element can select a corresponding target interface function network element according to the capability information indication, thereby ensuring normal signaling transmission between the radio access network and the core network.
  • the method further includes: the first network element passes the target interface
  • the functional network element sends a user equipment registration request message (for example, UE registration request) to the access and mobility management functional network element.
  • the first network element receives user equipment context information from the access and mobility management function network element through the target interface function network element. Therefore, the first network element performs signaling transmission with the access and mobility management function network element through the target interface function network element, because the target function network element is the capability of the first network element according to the access and mobility management function network element The information is selected, therefore, normal transmission signaling between the radio access network and the core network can be guaranteed.
  • the method further includes: first network element access to And the mobility management function network element sends a user equipment registration request message.
  • the first network element receives user equipment context information from an access and mobility management function network element. Therefore, the first network element simultaneously performs signaling transmission as the target interface function network element and the access and mobility management function network element, which can ensure normal transmission of signaling between the radio access network and the core network.
  • the method further includes: the first network element is a wireless network management function network element
  • the second network element is a network storage function network element (for example, a network function, NRF network element).
  • the first network element is a radio resource control network element
  • the second network element is a domain name system service network element (for example, a DNS server network element) or a wireless network management function network element.
  • the first network element is a non-service interface function network element
  • the second network element is a domain name system service network element. Therefore, the first network element and the second network element have multiple combination modes, which can be flexibly deployed to ensure normal signaling transmission between the radio access network and the core network under various networking situations.
  • the present application also provides a method for interface compatibility of signaling transmission, including: the capability of the fourth network element to obtain identification information of the access and mobility management function network element and the capability of the access and mobility management function network element information.
  • the fourth network element stores identification information and capability information.
  • the fourth network element saves the capability information of the access and mobility management function network elements in advance, so that in the subsequent signaling interaction process between the radio access network and the core network, the functions of the radio access network side
  • the network element can obtain the capability information of the access and mobility management function network element from the fourth network element, so as to select the corresponding target interface function network element for signaling transmission according to the capability information, and ensure that between the wireless access network and the core network Able to transmit signaling normally.
  • the fourth network element is a network storage function network element, a wireless network management function network element, or a non-service interface function network element. Therefore, the fourth network element can have multiple selection methods, which is convenient for flexible deployment during networking, and ensures that the fourth network element can save identification information and capability information in various networking situations.
  • the fourth network element when the fourth network element is a wireless network management function network element, the first The four network elements obtain the identification information of the access and mobility management function network element and the capability information of the access and mobility management function network element, including: the fourth network element receives the identification information and capability information from the non-service interface function network element . Therefore, in the subsequent signaling interaction process between the wireless access network and the core network, the functional network element on the radio access network side can query the capability information from the wireless network management functional element, and select the corresponding interface according to the capability information. The functional network element performs signaling transmission to ensure that signaling can be normally transmitted between the radio access network and the core network.
  • the fourth network element when the fourth network element is a non-service interface function network element, The fourth network element obtains the identification information of the access and mobility management function network element and the capability information of the access and mobility management function network element, including: the fourth network element receives the identification information and capability information from the NGAP protocol layer of the core network . Therefore, in the subsequent signaling interaction process between the radio access network and the core network, the functional network element on the radio access network side can query the capability information from the non-service interface functional network element, thereby selecting the corresponding one according to the capability information.
  • the interface function network element performs signaling transmission to ensure normal signaling transmission between the radio access network and the core network.
  • the fourth network element when the fourth network element is a network storage function network element, the fourth The network element obtains the identification information of the access and mobility management function network element and the capability information of the access and mobility management function network element, including: the fourth network element receives the identification information and capability from the access and mobility management function network element information. Therefore, in the subsequent signaling interaction process between the radio access network and the core network, the functional network element on the radio access network side can query the capability information from the network storage functional network element, thereby selecting the corresponding interface function according to the capability information. The network element performs signaling transmission to ensure normal transmission of signaling between the radio access network and the core network.
  • the capability information is used to indicate access and mobility
  • the management function network element has the ability to transmit signaling to the wireless access network through the non-service interface function network element; or, the capability information is used to indicate that the access and mobility management function network element has the management network element and the wireless network through the wireless network management function.
  • the capability of the access network to transmit signaling; or, the capability information is used to indicate that the access and mobility management function network element has to transmit with the radio access network through at least one of the non-service interface function network element or the wireless network management function network element Signaling capabilities. Therefore, during signaling transmission, the first network element can select a corresponding target interface function network element according to the capability information indication, thereby ensuring that signaling can be normally transmitted between the radio access network and the core network.
  • the present application also provides an interface compatible device for signaling transmission, and the interface compatible device for signaling transmission has a function of implementing the behavior of the first network element in the foregoing method.
  • the functions can be realized by hardware, and the corresponding software can also be implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the interface-compatible device for signaling transmission includes a processor and a transceiver, and the processor is configured to perform the corresponding function in the method in the interface-compatible device that processes the signaling transmission.
  • the transceiver is used to implement communication between the interface-compatible device for the signaling transmission and the second / third network element.
  • the interface-compatible device for signaling transmission may further include a memory, which is used for coupling with the processor, and stores the program instructions and data necessary for the interface-compatible device for signaling transmission.
  • the first network element obtains the capability information of the access and mobility management function network element, and selects the corresponding target interface function network element according to the capability information, so that the first network element can communicate with the target interface function network element through
  • the core network access and mobility management function network elements perform signaling transmission to ensure that signaling can be normally transmitted between the wireless access network and the core network.
  • the present application further provides an interface-compatible device for signaling transmission, and the interface-compatible device for signaling transmission has a function of implementing the behavior of the fourth network element in the foregoing method.
  • the functions can be realized by hardware, and the corresponding software can also be implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the interface-compatible device for signaling transmission includes a processor and a transceiver, and the processor is configured to perform the corresponding function in the method in the interface-compatible device that processes the signaling transmission.
  • the transceiver is used to implement communication between the interface-compatible device for the signaling transmission and the non-service interface function network element, the NGAP protocol layer of the core network, and the access and mobility management function network element.
  • the interface-compatible device for signaling transmission may further include a memory, which is used for coupling with the processor, and stores the program instructions and data necessary for the interface-compatible device for signaling transmission.
  • the fourth network element previously stores the capability information of the access and mobility management function network element, so that during the subsequent signaling interaction between the wireless access network and the core network, the functions of the wireless access network side
  • the network element can obtain the capability information of the access and mobility management function network element from the fourth network element, so as to select the corresponding target interface function network element for signaling transmission according to the capability information, and ensure that between the wireless access network and the core network Able to transmit signaling normally.
  • the present application provides a computer-readable storage medium having instructions stored in the computer-readable storage medium that, when run on a computer, causes the computer to execute the methods described in the above aspects.
  • the present application provides a computer program product containing instructions that, when run on a computer, causes the computer to perform the methods described in the above aspects.
  • the present application provides a chip system including a processor, which is configured to support the foregoing device or user equipment to implement the functions involved in the foregoing aspect, for example, to generate or process information involved in the foregoing method.
  • the chip system further includes a memory, where the memory is configured to store program instructions and data necessary for the interface-compatible device for signaling transmission.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • FIG. 1 is a schematic diagram of signaling transmission between a radio access network and a core network through a non-service interface
  • FIG. 2 is a schematic diagram of signaling transmission between a radio access network and a core network through a service-oriented interface
  • FIG. 3 is a schematic diagram of a scenario in which a radio access network and a core network cannot normally transmit signaling
  • FIG. 5 is a schematic diagram of a compatible network architecture provided by this application.
  • FIG. 6 is a flowchart of step S101 of an interface compatible method for signaling transmission provided by the present application.
  • FIG. 7 is a flowchart of step S101 of another interface compatibility method for signaling transmission provided by the present application.
  • FIG. 8 is a flowchart of step S101 of another interface compatibility method for signaling transmission provided by the present application.
  • FIG. 9 is a flowchart of a first implementation manner in which a first network element obtains capability information from a second network element;
  • FIG. 10 is a flowchart of a second implementation manner in which a first network element obtains capability information from a second network element;
  • FIG. 11 is a flowchart of a third implementation manner in which the first network element obtains capability information from the second network element;
  • FIG. 12 is a flowchart of a fourth implementation manner in which the first network element obtains capability information from the second network element;
  • FIG. 13 is a flowchart of a first implementation manner in which the first network element obtains capability information from the first network element;
  • FIG. 14 is a flowchart of a second implementation manner in which the first network element obtains capability information from the first network element;
  • 15 is a flowchart of a first implementation manner in which a first network element obtains capability information from a third network element;
  • 16 is a flowchart of a second implementation manner in which the first network element obtains capability information from a third network element;
  • 17 is a flowchart of a third implementation manner in which the first network element obtains capability information from a third network element;
  • 19 is a flowchart of a signaling transmission method of a first network element and an access and mobility management function network element;
  • 20 is a flowchart of a first implementation manner in which a first network element transmits signaling through a target interface function network element and an access and mobility management function network element;
  • 21 is a flowchart of a second implementation manner in which a first network element transmits signaling through a target interface function network element and an access and mobility management function network element;
  • FIG. 22 is a flowchart of a third implementation manner in which a first network element transmits signaling through a target interface function network element and an access and mobility management function network element;
  • FIG. 23 is a flowchart of a fourth implementation manner in which a first network element transmits signaling through a target interface function network element and an access and mobility management function network element;
  • 24 is a flowchart of another signaling transmission method of the first network element and the access and mobility management function network element;
  • 25 is a flowchart of a first implementation manner of transmitting signaling by a first network element and an access and mobility management function network element;
  • FIG. 26 is a flowchart of a second implementation manner of transmitting signaling by the first network element and the access and mobility management function network element;
  • FIG. 28 is a flowchart of a first implementation manner of a capability information reporting process
  • 29 is a flowchart of a second implementation manner of a capability information reporting process
  • FIG. 30 is a flowchart of a third implementation manner of a reporting process of capability information
  • FIG. 31 is a schematic structural diagram of a signaling-compatible interface compatible device provided by this application.
  • FIG. 32 is a schematic structural diagram of another signaling-compatible interface compatible device provided by the present application.
  • FIG. 33 is a schematic structural diagram of another signaling-compatible interface compatible device provided by the present application.
  • FIG. 34 is a schematic diagram of a computer-readable storage medium provided by the present application.
  • FIG. 35 is a schematic diagram of a chip system provided by the present application.
  • the control plane function of the 5G core network defined by the 3GPP standard is decomposed into multiple functional network elements (NF), such as: AMF network elements, network storage function network elements (NRF), and so on.
  • NF functional network elements
  • AMF application function network elements
  • NRF network storage function network elements
  • NF functional network elements
  • a direct connection is established between various functional network elements, and signaling interaction is performed through a service-oriented interface.
  • the core network access and mobility management function network element and the radio access network radio access network (radio access network (RAN)) perform signaling transmission through a non-service interface based on the NGAP protocol.
  • RAN radio access network
  • FIG. 1 is a schematic diagram of signaling transmission between a radio access network and a core network through a non-service interface.
  • the radio access network and the core network are connected through the N2 interface based on the NGAP protocol.
  • the signaling is first processed by the NGAP protocol layer of the radio access network, and then sent to the NGAP protocol layer of the core network through the N2 interface, and finally, the core network
  • the NGAP protocol layer forwards the signaling to the access and mobility management function network elements.
  • the AMF network element involved in FIG. 1 may be responsible for terminal device registration, mobility management, and tracking area update process.
  • AMF network elements can also be called AMF equipment or AMF entities.
  • the network function storage function network element (NRF) involved in FIG. 1 can provide a service discovery function.
  • the NRF network element can also maintain information about the network function network elements that are valid in the core network.
  • the NRF network element can also maintain the services supported by the effective network function network elements in the core network.
  • FIG. 2 is a schematic diagram of signaling transmission between a radio access network and a core network through a service-oriented interface.
  • one method is to add a radio network management function network element (radio network management function) to the radio access network.
  • RNMF radio network management function network element
  • the wireless network management function network element and the wireless resource control network element are connected through the C1 interface
  • the wireless network management function network element performs service-oriented processing on the NGAP protocol of the wireless access network and provides a service-oriented interface R2
  • the radio access network can perform signaling transmission with the core network through the service interface R2.
  • FIG. 3 is a schematic diagram of a scenario in which a radio access network and a core network cannot normally transmit signaling.
  • the wireless access network provides a service-oriented interface for signaling transmission with the core network by adding wireless network management function network elements; and because the wireless network management function network elements provide wireless access
  • the NGAP protocol of the network has been serviced.
  • the wireless access network removes the functions of the traditional NGAP protocol layer, so it cannot communicate with the core network through non-serviced interfaces.
  • the core network in Figure 3 does not support transmission of signaling with the radio access network through a serviced interface, but retains the functions of the traditional NGAP protocol layer. Therefore, the core network supports non-serviced interfaces with the radio access network. Signaling transmission.
  • the radio access network supports transmission of signaling with the core network through the serviced interface
  • the core network supports transmission of signaling with the radio access network through the non-serviced interface. Therefore, The interface processing mechanism used by the radio access network and the core network for signaling transmission is different, and signaling cannot be transmitted normally.
  • the embodiment of the present application provides a method for interface compatibility of signaling transmission, so as to solve the problem that the signaling cannot be transmitted normally because the interface processing mechanism used for signaling transmission is different between the radio access network and the core network.
  • FIG. 4 is a flowchart of an interface compatibility method for signaling transmission provided in this application. As shown in FIG. 4, the method includes the following steps:
  • Step S101 the first network element obtains capability information of the access and mobility management function network element, and the capability information is used to indicate that the access and mobility management function network element has a signaling function for transmitting the signaling to the wireless access network through the target interface function network element Ability.
  • the first network element may obtain the capability information of the access and mobility management function network element in any of the following three ways:
  • the first network element may obtain the capability information of the access and mobility management function network element from the second network element.
  • the first network element may obtain the capability information of the access and mobility management function network element in the first possible manner, which may be further described in conjunction with FIG. 6.
  • the first network element may obtain the capability information of the access and mobility management function network element from the third network element.
  • the first network element may obtain the capability information of the access and mobility management function network element in the second possible manner, which may be further described in conjunction with FIG. 7.
  • the first network element may obtain capability information of the access and mobility management function network element from the first network element.
  • the first network element may obtain the capability information of the access and mobility management function network element in a third possible manner, which may be further described in conjunction with FIG. 8.
  • the target interface function network element may be a non-service interface function network element; or it may be a wireless network management function network element; or it may be any of a non-service interface function network element or a wireless network management function network element.
  • the non-service interface function network element is an independent interface function network element (which may be further referred to as an N2 interface function network) formed by separating the functions of the NGAP protocol layer of the radio access network from the radio access network. yuan).
  • the non-service interface function network element is connected to the wireless network management function network element through the C2 interface, and is connected to the NGAP protocol layer of the core network side through the N2 interface, and transmits signaling through the C2 interface and the N2 interface.
  • Step S102 The first network element selects a target interface function network element according to the capability information, and the target interface function network element is used for transmission of signaling between the access and mobility management function network element and the wireless access network.
  • the first network element selects the target interface function network element according to the capability information in the following three cases:
  • the capability information is used to indicate that the access and mobility management function network element has the capability to transmit signaling to the radio access network through the non-service interface function network element, and the first network element selects non-service The interface function network element is used as the target interface function network element.
  • the capability information is used to indicate that the access and mobility management function network element has the capability to transmit signaling with the wireless network management function network element and the wireless access network, and the first network element selects wireless network management
  • the functional network element serves as the target interface functional network element.
  • the capability information is used to indicate that the access and mobility management function network element has to transmit signaling with the radio access network through at least one of the non-service interface function network element or the wireless network management function network element Capability, the first network element selects a non-service interface function network element or a wireless network management function network element as the target interface function network element.
  • the three situations in which the first network element selects the target interface function network element according to the capability information are applicable to the three networking scenarios of the radio access network and the core network, respectively.
  • RNMF is a wireless network management function network element
  • RAN-NGAP is a non-service interface function network element
  • NGAP is the NGAP protocol layer of the core network.
  • the access and mobility management function network element has the ability to transmit signaling to the wireless access network through the non-service interface function network element.
  • the first network The element selects the non-service interface function network element as the target interface function network element.
  • the access and mobility management function network element has the ability to transmit signaling through the wireless network management function network element and the wireless access network.
  • the first network element The wireless network management function network element is selected as the target interface function network element.
  • the access and mobility management function network element has a function of transmitting signaling with the wireless access network through at least one of the non-service interface function network element or the wireless network management function network element. Capability.
  • the first network element selects a non-service interface function network element or a wireless network management function network element as the target interface function network element.
  • the present invention can select different target interface function network elements according to different networking scenarios of the wireless access network and the core network, thereby ensuring that the wireless access network can normally transmit with the core network in any networking scenario. Signaling.
  • the first network element obtains the capability information of the access and mobility management function network element, and selects the corresponding target interface function network element according to the capability information, so that the first network element can pass
  • the target interface function network element performs signaling transmission with the core network access and mobility management function network element to ensure normal signaling transmission between the radio access network and the core network.
  • step S101 of an interface compatible method for signaling transmission provided by the present application is shown.
  • the first network element acquires an access and mobility management function network element.
  • the capability information can include the following steps:
  • Step S201 The first network element sends request information to the second network element.
  • the request information is used to query the available access and mobility management function network elements of the core network, so as to obtain the capability information of the available access and mobility management function network elements.
  • the first network element acquiring capability information from the second network element may include four possible implementation modes:
  • the first network element is a wireless network management function network element
  • the second network element is a network storage function network element
  • the first network element is a radio resource control network element
  • the second network element is a domain name system service network element
  • the first network element is a radio resource control network element
  • the second network element is a wireless network management function network element
  • the first network element is a non-service interface function network element
  • the second network element is a domain name system service network element
  • Step S202 The first network element receives capability information from the second network element.
  • the second network element When the second network element receives the request information sent by the first network element, the second network element searches for the access and mobility management function network elements available to the core network, and compares the access and mobility management function network elements with The identification information and capability information are sent to the first network element.
  • the first manner in which the first network element can obtain the capability information from the second network element may be further described in conjunction with FIG. 9.
  • a second manner in which the first network element can obtain capability information from the second network element can be further described in conjunction with FIG. 10.
  • a third manner in which the first network element can obtain capability information from the second network element may be further described in conjunction with FIG. 11.
  • a fourth manner in which the first network element can obtain capability information from the second network element can be further described in conjunction with FIG. 12.
  • the first network element obtains the capability information of the access and mobility management function network element from the second network element, so that the first network element can select the target interface function network element according to the capability information.
  • Signaling transmission is performed through the target interface function network element and the core network access and mobility management function network element to ensure that the radio access network and the core network can normally transmit signaling.
  • FIG. 7 is a flowchart of step S101 of another interface compatible method for signaling transmission provided by the present application.
  • the first network element acquires access and mobility management functions.
  • the capability information of a network element may include the following steps:
  • Step S301 The first network element sends request information to the second network element.
  • the request information is used to query the available access and mobility management function network elements of the core network, so as to obtain the identification information of the available access and mobility management function network elements.
  • the identification information is used to mark the unique identity of the network element of the access and mobility management function.
  • the identification information can be an Internet protocol address (IP address) or a fully qualified domain name (fully qualified) of the network element of the access and mobility management function. domain name, FQDN), etc., the present invention is not limited
  • the first network element acquiring capability information from the first network element may include two possible implementation modes:
  • the first network element is a wireless network management function network element
  • the second network element is a network storage function network element
  • the first network element is a non-service interface function network element
  • the second network element is a domain name system service network element
  • Step S302 The first network element receives identification information of the mobility management function network element from the second network element.
  • the second network element when the second network element receives the request information sent by the first network element, the second network element searches for the available access and mobility management function network elements, and sets the identification information of the access and mobility management function network elements. Send to the first network element.
  • Step S303 The first network element obtains capability information from the first network element according to the identification information.
  • the first network element may specifically be any one of the wireless network management function network element or the non-service interface function network element that stores an AMF context.
  • the AMF context includes identification information and capability information of the access and mobility management function network element. .
  • the first network element may query the AMF context according to the identification information received from the second network element, and find capability information corresponding to the identification information in the AMF context.
  • the AMF context may be a list including identification information and capability information of multiple access and mobility management function network elements, as shown in Table 1.
  • AMFID indicates identification information of access and mobility management function network elements
  • AMFN2capability indicates capability information of access and mobility management function network elements
  • CN-NGAPOnly is used to indicate access and The mobility management function network element has the ability to transmit signaling through the non-service interface function network element and the wireless access network.
  • CN-NGAP not supported is used to indicate that the access and mobility management function network element has the network through the wireless network management function. The capability of the element to transmit signaling with the wireless access network.
  • CN-NGAP Preferred is used to indicate that the access and mobility management function network element has at least one of the non-service interface function network element or the wireless network management function network element and the wireless connection.
  • AMF ID AMF N2 capability 10.76.100.xxx CN-NGAP Only 10.61.100.xxx CN-NGAP not supported 10.91.100.xxx CN-NGAP Preferred
  • a first implementation manner in which the first network element can obtain capability information from the first network element may be further described in conjunction with FIG. 13;
  • a second implementation manner in which the first network element can obtain capability information from the first network element may be further described in conjunction with FIG. 14.
  • the first network element obtains the capability information of the access and mobility management function network element from the first network element, so that the first network element can select a corresponding target interface function according to the capability information.
  • the network element performs signaling transmission through the target interface function network element and the access and mobility management function network element to ensure that signaling can be normally transmitted between the first network element and the mobility management function network element.
  • step S101 of another method for interface compatibility of signaling transmission provided by the present application.
  • the first network element obtains access and mobility management.
  • the capability information of the functional network element may include the following steps:
  • Step S401 The first network element sends request information to the second network element.
  • the request information is used to query the available access and mobility management function network elements of the core network, so as to obtain the identification information of the available access and mobility management function network elements.
  • the identification information is used to mark the unique identity of the network element of the access and mobility management function.
  • the identification information can be an Internet protocol address (IP address) or a fully qualified domain name (fully qualified) of the network element of the access and mobility management function. domain name, FQDN), etc., the present invention is not limited
  • the first network element and the second network element include three possible combinations:
  • the first network element is a wireless network management function network element
  • the second network element is a network storage function network element
  • the first network element is a radio resource control network element
  • the second network element is a domain name system service network element
  • the first network element is a non-service interface function network element
  • the second network element is a domain name system service network element
  • Step S402 The first network element receives identification information of the mobility management function network element from the second network element.
  • the second network element when the second network element receives the request information sent by the first network element, the second network element searches for the available access and mobility management function network elements, and sets the identification information of the access and mobility management function network elements. Send to the first network element.
  • Step S403 The first network element sends identification information to a third network element.
  • the first network element and the third network element include four possible combinations
  • the first network element is a wireless network management function network element
  • the third network element is a non-service interface function network element
  • the first network element is a radio resource control network element
  • the third network element is a non-service interface function network element
  • the first network element is a radio resource control network element
  • the third network element is a wireless network management function network element
  • the first network element is a non-service interface function network element
  • the third network element is a wireless network management function network element.
  • the third network element may specifically be any one of a wireless network management function network element or a non-service interface function network element that stores an AMF context.
  • AMF context refers to the descriptions in Table 1 and step S303, and details are not described herein again.
  • Step S404 The first network element receives capability information from a third network element.
  • combining the first network element and the second network element includes 3 possible combinations, and the first network element and the third network element include 4 possible combinations, the first network element obtains capability information from the third network element. It can include 4 possible implementations:
  • the first network element is a wireless network management function network element
  • the second network element is a network storage function network element
  • the third network element is a non-service interface function network element.
  • the first network element may obtain the capability information from the third network element in the first possible manner, which may be further described in conjunction with FIG. 15.
  • the first network element is a radio resource control network element
  • the second network element is a domain name system service network element
  • the third network element is a non-service interface function network element.
  • the first network element may obtain the capability information from the third network element in the second possible manner, which may be further described in conjunction with FIG. 16.
  • the first network element is a radio resource control network element
  • the second network element is a domain name system service network element
  • the third network element is a wireless network management function network element.
  • the first network element may obtain the capability information from the third network element in a third possible manner, which may be further described in conjunction with FIG. 17.
  • the first network element is a non-service interface function network element
  • the second network element is a domain name system service network element
  • the third network element is a wireless network management function network element.
  • the first network element may obtain the capability information from the third network element in a fourth possible manner, which may be further described in conjunction with FIG. 18.
  • the first network element obtains the capability information of the access and mobility management function network element from the third network element, so that the first network element can select the target interface function network element according to the capability information.
  • Signaling transmission is performed through the target interface function network element and the access and mobility management function network element to ensure that the radio access network and the core network can normally transmit signaling.
  • the first network element obtains capability information from the second network element has a first implementation manner.
  • FIG. 9 it is a flow of a first implementation manner in which the first network element acquires capability information from the second network element.
  • the first network element is a wireless network management function network element
  • the second network element is a network storage function network element. It includes the following steps:
  • Step S501 The wireless network management function network element sends a request message to the network storage function network element.
  • the request information is an AMF service discovery request message (NF service discovery request), which is used by the network storage function network element to query the access and mobility management function network elements available to the core network.
  • NF service discovery request AMF service discovery request message
  • the AMF service discovery request message is generated according to a user equipment registration request message (UE registration request).
  • UE registration request user equipment registration request message
  • the user equipment sends a user equipment registration request message to the radio resource control network element; then, the radio resource control network element forwards the user equipment registration request message to the radio network management function network element; finally, the radio network management function network element receives the In the case of the user equipment registration request message, the AMF service discovery request message is sent to the network storage function network element.
  • Step S502 The wireless network management function network element receives identification information and capability information from the network storage function network element.
  • the network storage function network element queries the access and mobility management function network elements available to the core network according to the AMF service discovery request message, and sends identification information and capability information corresponding to the found access and mobility management function network elements. Gives network elements for wireless network management functions.
  • the network storage function network element configures identification information and capability information in an AMF service discovery response message, and sends the identification information and capability information to the wireless network management function network element through the AMF service discovery response message.
  • the wireless network management function network element obtains the capability information of the access and mobility management function network element from the network storage function network element, so that the wireless network management function network element can select according to the capability information.
  • the target interface function network element performs signaling transmission with the access and mobility management function network element through the target interface function network element to ensure normal signaling transmission between the radio access network and the core network.
  • the first network element obtains capability information from the second network element has a second implementation manner. Referring to FIG. 10, it is a second implementation manner in which the first network element obtains capability information from the second network element.
  • Step S601 The radio resource control network element sends request information to the domain name system service network element.
  • the request information is a DNS query request message (DNS query request), which is used by the domain name system service network element to query the user equipment and the available access and mobility management function network elements.
  • DNS query request a DNS query request message
  • the DNS query request message is generated according to the user equipment registration request message, which may specifically include: first, the user equipment sends a user equipment registration request message to the radio resource control network element; then, the radio resource control network element receives the user from the user equipment In the case of a device registration request message, a DNS query request message is sent to a domain name system service network element.
  • Step S602 The radio resource control network element receives identification information and capability information from the domain name system service network element.
  • the domain name system service network element queries the available access and mobility management function network elements of the core network according to the DNS query request message, and sends the identification information and capability information corresponding to the found access and mobility management function network elements to Radio resource control network element.
  • the domain name system service network element includes identification information and capability information in a DNS query response message (DNS query response message), and sends the identification information and capability information to the wireless network management function network element through the DNS query response message.
  • DNS query response message a DNS query response message
  • the radio resource control network element obtains the capability information of the access and mobility management function network element from the domain name system service network element, so that the radio resource control network element can select the target interface according to the capability information.
  • the functional network element performs signaling transmission with the target interface functional network element and the access and mobility management functional network element to ensure normal signaling transmission between the radio access network and the core network.
  • the first network element obtains the capability information from the second network element in a third implementation manner.
  • FIG. 11 it is a third implementation manner in which the first network element obtains the capability information from the second network element.
  • the first network element is a radio resource control network element
  • the second network element is a wireless network management function network element. It includes the following steps:
  • Step S701 The radio resource control network element sends request information to the wireless network management function network element.
  • the request information is a UE directed request message (UE message direction request), and the UE directed request message carries a message type (message type), for example, the message type may include: uplink non-access stratum (NAS) message, etc. Wait.
  • the UE orientation request message is generated according to the user equipment sending a user equipment registration request message to the radio resource control network element.
  • the wireless network management function network element determines whether to obtain identification information and capability information according to the message type carried in the UE orientation request message.
  • the message type is an uplink non-access layer message
  • the wireless network management function network element obtains identification information and capability information. .
  • Step S702 The radio resource control network element receives identification information and capability information from the radio network management function network element.
  • step S501-step S502 The specific process for the wireless network management function network element to obtain the identification information and capability information in this embodiment may be implemented by referring to or drawing on the steps of other embodiments of the present invention, such as step S501-step S502, step S901-step S903, step S1101 -Step S1104, which is not repeated here.
  • the radio resource control network element obtains the capability information of the access and mobility management function network element from the radio network management function network element, so that the radio resource control network element can select a target according to the capability information.
  • the interface function network element performs signaling transmission with the target interface function network element and the access and mobility management function network element to ensure normal signaling transmission between the radio access network and the core network.
  • the first network element obtains capability information from the second network element has a fourth implementation manner. Referring to FIG. 12, it is a fourth implementation manner in which the first network element obtains capability information from the second network element.
  • the first network element is a non-service interface function network element
  • the second network element is a domain name system service network element. It includes the following steps:
  • Step S801 The non-service interface function network element sends request information to the domain name system service network element.
  • the request information is a DNS query request message (DNS query request).
  • DNS query request a DNS query request message
  • the DNS query request message is generated according to the user equipment registration request message, which may specifically include: first, the user equipment sends a user equipment registration request message to the radio resource control network element; then, the radio resource control network element forwards the user equipment registration request message to The non-service interface function network element; finally, when receiving the user equipment registration request message, the non-service interface function network element sends a DNS query request message to the domain name system service network element.
  • step S802 the non-service interface function network element receives identification information and capability information from the domain name system service network element.
  • the domain name system service network element queries the available access and mobility management function network elements according to the DNS query request message, and sends the identification information and capability information corresponding to the found access and mobility management function network elements to the non-service Interface function network element.
  • the domain name system service network element configures the identification information and capability information in a DNS query response message (DNS query response message), and sends the identification information and capability information to the non-service interface function network element through the DNS query response message.
  • DNS query response message a DNS query response message
  • the non-service interface function network element obtains the capability information of the access and mobility management function network element from the domain name system service network element, so that the radio resource control network element can select according to the capability information.
  • the target interface function network element performs signaling transmission with the access and mobility management function network element through the target interface function network element to ensure normal signaling transmission between the radio access network and the core network.
  • the first network element obtains capability information from the first network element has a first implementation manner.
  • FIG. 13 it is a flow of a first implementation manner of the first network element acquisition of capability information from the first network element.
  • the first network element is a wireless network management function network element
  • the second network element is a network storage function network element. It includes the following steps:
  • Step S901 the wireless network management function network element sends a request message to the network storage function network element.
  • the request information is an AMF discovery service request message (NF service discovery request).
  • Step S902 The wireless network management function network element receives identification information from the network storage function network element.
  • the network storage function network element queries the available access and mobility management function network elements of the wireless access network according to the AMF discovery service request message, and sends the identification information corresponding to the found access and mobility management function network elements to Wireless network management function network element.
  • the network storage function network element may configure the identification information in an AMF discovery service response message (NF, service response), and send the identification information and capability information to the wireless network management function network element through the AMF discovery service response message.
  • NF AMF discovery service response message
  • Step S903 The wireless network management function network element obtains capability information from the wireless network management function network element according to the identification information.
  • the wireless network management function network element can find the capability information corresponding to the identification information in the AMF context saved by itself according to the identification information received from the network storage function network element. .
  • the wireless network management function network element obtains the capability information of the access and mobility management function network element from the AMF context type saved by itself according to the identification information received from the network storage function network element. Therefore, the wireless network management function network element can select the target interface function network element according to the capability information, and perform signalling transmission through the target interface function network element and the access and mobility management function network element to ensure the wireless access network and the core network. Can normally transmit signaling.
  • the first network element obtains capability information from the first network element has a second implementation manner.
  • FIG. 14 it is a second implementation manner in which the first network element obtains capability information from the first network element.
  • the first network element is a non-service interface function network element
  • the second network element is a domain name system service network element. It includes the following steps:
  • Step S1001 The non-service interface function network element sends request information to the domain name system service network element.
  • the request information is a DNS query request message (DNS query request).
  • DNS query request a DNS query request message
  • Step S1002 the non-service interface function network element receives identification information from the domain name system service network element.
  • the domain name system service network element configures the identification information in a DNS query response message, and sends the identification information to the non-service interface function network element through the DNS query response message.
  • the domain name system service network element queries the access and mobility management function network elements available to the core network according to the DNS query request message, and sends the identification information corresponding to the found access and mobility management function network elements to non-service Interface function network element.
  • Step S1003 The non-service interface function network element obtains capability information from the non-service interface function network element according to the identification information.
  • the non-service interface function network element since the non-service interface function network element stores the AMF context, the non-service interface function network element can find the corresponding AMF context in the AMF context saved by itself according to the identification information received from the network storage function network element. Capability information.
  • the non-service interface function network element obtains the capability information of the access and mobility management function network element from the AMF context type saved by itself according to the identification information received from the network storage function network element. Therefore, the non-service interface function network element can select the target interface function network element according to the capability information, and perform signalling transmission through the target interface function network element and the access and mobility management function network element to ensure the wireless access network and the core. Networks can transmit signaling normally.
  • the first network element obtains capability information from a third network element has a first implementation manner, and referring to FIG. 15, it is a flow of a first implementation manner in which the first network element obtains capability information from a third network element.
  • the first network element is a wireless network management function network element
  • the second network element is a network storage function network element
  • the third network element is a non-service interface function network element. It includes the following steps:
  • Step S1101 The wireless network management function network element sends a request message to the network storage function network element.
  • the request information is an AMF discovery service request message (NF service discovery request).
  • Step S1102 The wireless network management function network element receives identification information from the network storage function network element.
  • the network storage function network element queries the access and mobility management function network elements available to the core network according to the AMF discovery service request message, and sends the identification information corresponding to the found access and mobility management function network elements to the wireless network.
  • Management function network element For example, the network storage function network element queries the access and mobility management function network elements available to the core network according to the AMF discovery service request message, and sends the identification information corresponding to the found access and mobility management function network elements to the wireless network.
  • Management function network element is notified.
  • the network storage function network element may configure the identification information in an AMF discovery service response message (NF, service response), and send the identification information and capability information to the wireless network management function network element through the AMF discovery service response message.
  • NF AMF discovery service response message
  • Step S1103 The wireless network management function network element sends identification information to the non-service interface function network element.
  • the non-service interface function network element stores the AMF context
  • the non-service interface function network element after receiving the identification information sent by the wireless network management function network element, the non-service interface function network element first finds the corresponding in the AMF context according to the identification information. The capability information is then sent to the wireless network management function network element.
  • Step S1104 the wireless network management function network element receives capability information from the non-service interface function network element.
  • the wireless network management function network element obtains the capability information of the access and mobility management function network element from the non-service interface function network element according to the identification information received from the network storage function network element. Therefore, the wireless network management function network element can select the target interface function network element according to the capability information, and perform signaling transmission with the access and mobility management function network element through the target interface function network element to ensure the wireless access network and the core network. Signaling can be transmitted between them normally.
  • the first network element obtains capability information from a third network element has a second implementation manner, and referring to FIG. 16, it is a second implementation manner in which the first network element obtains capability information from a third network element.
  • the first network element is a radio resource control network element
  • the second network element is a domain name system service network element
  • the third network element is a non-service interface function network element. It includes the following steps:
  • Step S1201 The radio resource control network element sends the request information to the domain name system service network element.
  • the request information is an AMF discovery service request message (NF service discovery request).
  • Step S1202 the radio resource control network element receives identification information from the domain name system service network element.
  • the domain name system service network element queries the access and mobility management function network elements available to the core network according to the AMF discovery service request message, and sends the identification information corresponding to the found access and mobility management function network elements to the wireless resource. Control network element.
  • the domain name system service network element may configure the identification information in an AMF discovery service response message (NF, service response), and send the identification information and capability information to the radio resource control network element through the AMF discovery service response message.
  • NF AMF discovery service response message
  • Step S1203 The radio resource control network element sends identification information to the non-service interface function network element.
  • the non-service interface function network element stores the AMF context. Therefore, after receiving the identification information sent by the radio resource control network element, the non-service interface function network element first finds the corresponding capability in the AMF context according to the identification information. Information, and then send the found capability information to the radio resource control network element.
  • Step S1204 The radio resource control network element receives capability information from the non-service interface function network element.
  • the radio resource control network element obtains the capability information of the access and mobility management function network element from the non-service interface function network element according to the identification information received from the domain name system service network element. Therefore, the radio resource control network element can select the target interface function network element according to the capability information, and perform signaling transmission through the target interface function network element and the access and mobility management function network element to ensure that between the wireless access network and the core network Able to transmit signaling normally.
  • the first network element obtains the capability information from the third network element in a third implementation manner.
  • the first network element is a radio resource control network element
  • the second network element is a domain name system service network element
  • the third network element is a wireless network management function network element. It includes the following steps:
  • Step S1301 the radio resource control network element sends the request information to the domain name system service network element.
  • the request information is an AMF discovery service request message (NF service discovery request).
  • Step S1302 the radio resource control network element receives identification information from the domain name system service network element.
  • the domain name system service network element queries the access and mobility management function network elements available to the core network according to the AMF discovery service request message, and sends the identification information corresponding to the found access and mobility management function network elements to the wireless resource. Control network element.
  • the domain name system service network element may configure the identification information in an AMF discovery service response message (NF service response), and send the identification information and capability information to the wireless network management function network element through the AMF discovery service response message.
  • NF service response AMF discovery service response message
  • Step S1303 The radio resource control network element sends identification information to the radio network management function network element.
  • the wireless network management function network element stores the AMF context. Therefore, after receiving the identification information sent by the wireless resource control network element, the wireless network management function network element first finds the corresponding capability information in the AMF context according to the identification information. Then, the found capability information is sent to the radio resource control network element.
  • Step S1304 the radio resource control network element receives capability information from the radio network management function network element.
  • the radio resource control network element obtains the capability information of the access and mobility management function network element from the wireless network management function network element according to the identification information received from the domain name system service network element, thereby The radio resource control network element can select the target interface function network element according to the capability information, and perform signalling transmission through the target interface function network element and the access and mobility management function network element to ensure that the wireless access network and the core network can communicate with each other. Signaling is transmitted normally.
  • the first network element obtains capability information from a third network element has a fourth implementation manner, and referring to FIG. 18, it is a fourth implementation manner in which the first network element obtains capability information from a third network element
  • the first network element is a non-service interface function network element
  • the second network element is a domain name system service network element
  • the third network element is a wireless network management function network element. It includes the following steps:
  • Step S1401 The non-service interface function network element sends request information to the domain name system service network element.
  • the request information is a DNS query request message (DNS query request).
  • DNS query request a DNS query request message
  • Step S1402 the non-service interface function network element receives identification information from the domain name system service network element.
  • the domain name system service network element configures the identification information in a DNS query response message, and sends the identification information to the non-service interface function network element through the DNS query response message.
  • the domain name system service network element queries the access and mobility management function network elements available to the core network according to the DNS query request message, and sends the identification information corresponding to the found access and mobility management function network elements to non-service Interface function network element.
  • Step S1403 The non-service interface function network element sends identification information to the wireless network management function network element.
  • the wireless network management function network element stores the AMF context. Therefore, after receiving the identification information sent by the wireless resource control network element, the wireless network management function network element first finds the corresponding capability information in the AMF context according to the identification information. Then, the found capability information is sent to the non-service interface function network element.
  • Step S1404 the non-service interface function network element receives capability information from the wireless network management function network element.
  • the non-service interface function network element obtains the capability information of the access and mobility management function network element from the wireless network management function network element according to the identification information received from the domain name system service network element. Therefore, the non-service interface function network element can select the target interface function network element according to the capability information, and perform signalling transmission through the target interface function network element and the access and mobility management function network element to ensure the wireless access network and the core. Networks can transmit signaling normally.
  • the present invention further provides a method for the first network element to transmit signaling through the target interface function network element and the access and mobility management function network element.
  • 19 is a flowchart of a signaling transmission method for a first network element and an access and mobility management function network element. The method includes the following steps:
  • Step S1501 The first network element sends a user equipment registration request message to the access and mobility management function network element through the target interface function network element.
  • the user equipment registration request message is sent by the user equipment to the first network element when the user equipment establishes a connection with the first network element, and is used for the user equipment to complete registration in the access and mobility management function network element.
  • Step S1502 The first network element receives user equipment context information from the access and mobility management function network element through the target interface function network element.
  • the first network element transmitting signaling through the target interface function network element and the access and mobility management function network element may include four possible implementation modes:
  • the first network element is a wireless network management function network element
  • the target interface function network element is a non-service interface function network element
  • the first implementation manner in which the first network element transmits signaling through the target interface function network element and the access and mobility management function network element may be further described in conjunction with FIG. 20.
  • the first network element is a radio resource control network element
  • the target interface function network element is a non-service interface function network element
  • a second implementation manner in which the first network element transmits signaling through the target interface function network element and the access and mobility management function network element can be further described in conjunction with FIG. 21.
  • the first network element is a radio resource control network element
  • the target interface function network element is a wireless network management function network element
  • a third implementation manner in which the first network element transmits signaling through the target interface function network element and the access and mobility management function network element can be further described in conjunction with FIG. 22.
  • the first network element is a non-service interface function network element
  • the target interface function network element is a wireless network management function network element
  • a fourth implementation manner in which the first network element transmits signaling through the target interface function network element and the access and mobility management function network element can be further described in conjunction with FIG. 23.
  • the first network element performs signaling transmission with the access and mobility management function network element through the target interface function network element. Since the target function network element is the first network element according to the access and mobility, The capability information of the network element of the performance management function is selected, so that normal signaling can be ensured between the radio access network and the core network.
  • the first network element transmits the signaling through the target interface function network element and the access and mobility management function network element in a first implementation manner.
  • the first network element passes the target interface function network Flowchart of the first implementation method for transmitting signaling between the element and the access and mobility management function network element, wherein the first network element is a wireless network management function network element, and the target interface function network element is a non-service interface function network yuan. It includes the following steps:
  • Step S1601 The wireless network management function network element sends a user equipment registration request message to the non-service interface function network element.
  • Step S1602 the non-service interface function network element forwards the user equipment registration request message to the NGAP protocol layer of the core network.
  • Step S1603 the NGAP protocol layer of the core network forwards the user equipment registration request message to the access and mobility management function network element.
  • Step S1604 The access and mobility management function network element requests user equipment context information according to the user equipment registration request message, and sends the user equipment context information to the NGAP protocol layer of the core network.
  • Step S1605 The NGAP protocol layer of the core network forwards the user equipment context information to the non-service interface function network element.
  • Step S1606 the non-service interface function network element forwards the user equipment context information to the wireless network management function network element.
  • the wireless network management function network element performs signaling transmission with the access and mobility management function network element through the non-service interface function network element, because the target function network element is the wireless network management function network
  • the element is selected according to the capability information of the access and mobility management function network element. Therefore, normal transmission signaling between the radio access network and the core network can be guaranteed.
  • the first network element transmits the signaling through the target interface function network element and the access and mobility management function network element in a second implementation manner.
  • the first network element passes the target interface function.
  • the first network element is a radio resource control network element
  • the target interface function network element is a non-service interface function network. yuan. It includes the following steps:
  • Step S1701 The radio resource control network element sends a user equipment registration request message to the non-service interface function network element.
  • Step S1702 the non-service interface function network element forwards the user equipment registration request message to the NGAP protocol layer of the core network.
  • Step S1703 The NGAP protocol layer of the core network forwards the user equipment registration request message to the access and mobility management function network element.
  • Step S1704 The access and mobility management function network element requests the user equipment context information according to the user equipment registration request message, and sends the user equipment context information to the NGAP protocol layer of the core network.
  • Step S1705 The NGAP protocol layer of the core network forwards the user equipment context information to the non-service interface function network element.
  • Step S1706 The non-service interface function network element forwards the user equipment context information to the radio resource control network element.
  • the radio resource control network element performs signaling transmission with the access and mobility management function network element through the non-service interface function network element.
  • the capability information of the access and mobility management function network elements is selected, so that normal signaling can be ensured between the radio access network and the core network.
  • the first network element transmits the signaling through the target interface function network element and the access and mobility management function network element in a third implementation manner.
  • the first network element passes the target interface function.
  • the first network element is a radio resource control network element
  • the target interface function network element is a wireless network management function network element. . It includes the following steps:
  • Step S1801 The radio resource control network element sends a user equipment registration request message to the radio network management function network element.
  • Step S1802 The wireless network management function network element forwards the user equipment registration request message to the access and mobility management function network element.
  • Step S1803 The access and mobility management function network element requests the user equipment context information according to the user equipment registration request message, and sends the user equipment context information to the wireless network management function network element.
  • Step S1804 the wireless network management function network element forwards the user equipment context information to the radio resource control network element.
  • the radio resource control network element performs signaling transmission with the access and mobility management function network element through the radio network management function network element, because the target function network element is the radio resource control network element according to the connection.
  • the capability information of the network elements of the access and mobility management functions is selected, so that normal signaling can be ensured between the radio access network and the core network.
  • the first network element transmits signaling through the target interface function network element and the access and mobility management function network element in a fourth implementation manner.
  • the first network element passes the target interface function.
  • the first network element is a non-service interface function network element
  • the target interface function network element is a wireless network management function. Network element. It includes the following steps:
  • Step S1901 the non-service interface function network element sends a user equipment registration request message to the wireless network management function network element.
  • Step S1902 the wireless network management function network element forwards the user equipment registration request message to the access and mobility management function network element.
  • Step S1903 The access and mobility management function network element requests the user equipment context information according to the user equipment registration request message, and sends the user equipment context information to the wireless network management function network element.
  • Step S1904 The wireless network management function network element forwards the user equipment context information to the non-service interface function network element.
  • the non-service interface function network element performs signaling transmission with the access and mobility management function network element through the wireless network management function network element, because the target function network element is a radio resource control network element It is selected according to the capability information of the access and mobility management function network elements, and therefore, normal transmission signaling between the radio access network and the core network can be guaranteed.
  • the present application further provides a method in which the first network element simultaneously serves as a target interface function network element and an access and mobility management function network element to transmit signaling.
  • Step S2001 the first network element sends a user equipment registration request message to the access and mobility management function network element.
  • step S2002 the first network element receives user equipment context information from the access and mobility management function network element.
  • the first network element serving as the target interface function network element and the access and mobility management function network element transmission signaling may include two possible implementation modes:
  • the first network element is a wireless network management function network element.
  • a first implementation manner in which the first network element simultaneously serves as a target interface function network element and an access and mobility management function network element to transmit signaling can be further described in conjunction with FIG. 25.
  • the first network element is a non-service interface function network element.
  • the second implementation manner in which the first network element simultaneously serves as the target interface function network element and the access and mobility management function network element to transmit signaling can be further described in conjunction with FIG. 26.
  • the first network element simultaneously performs signaling transmission with the access and mobility management function network element as a target interface function network element, which can ensure normal transmission of information between the wireless access network and the core network. make.
  • the first network element and the access and mobility management function network element transmission signaling have a first implementation manner. See FIG. 25, which is the first network element and the access and mobility management function network element transmission.
  • Step S2101 The wireless network management function network element sends a user equipment registration request message to the access and mobility management function network element.
  • Step S2102 The wireless network management function network element receives user equipment context information from the access and mobility management function network element.
  • the wireless network management function network element simultaneously serves as the target interface function network element and the access and mobility management function network element for signaling transmission, which can ensure normality between the wireless access network and the core network Transmission signaling.
  • the first network element and the access and mobility management function network element transmit signaling has a second implementation manner. See FIG. 26, which is the first network element and the access and mobility management function network element.
  • Step S2201 the non-service interface function network element sends a user equipment registration request message to the NGAP protocol layer of the core network.
  • Step S2202 the NGAP protocol layer of the core network forwards the user equipment registration request message to the access and mobility management function network element.
  • Step S2203 the access and mobility management function network element requests the user equipment context information according to the user equipment registration request message, and sends the user equipment context information to the NGAP protocol layer of the core network.
  • Step S2204 the NGAP protocol layer of the core network forwards the user equipment context information to the non-service interface function network element.
  • the non-service interface function network element simultaneously serves as the target interface function network element and the access and mobility management function network element to perform signaling transmission, which can ensure that between the wireless access network and the core network Signaling is transmitted normally.
  • this application further provides a process for reporting capability information.
  • FIG. 27 is a flowchart of reporting capability information provided by this application, and specifically includes the following steps:
  • Step S2301 the fourth network element obtains identification information of the access and mobility management function network element and capability information of the access and mobility management function network element.
  • the fourth network element may be a network storage function network element, a wireless network management function network element, or a non-service interface function network element.
  • the capability information includes the following three situations:
  • the capability information is used to indicate that the access and mobility management function network element has the capability to transmit signaling to the radio access network through the non-service interface function network element.
  • the capability information is used to indicate that the access and mobility management function network element has the capability to transmit signaling to the radio access network through the wireless network management function network element.
  • the capability information is used to indicate that the access and mobility management function network element has to transmit signaling with the radio access network through at least one of the non-service interface function network element or the wireless network management function network element Ability.
  • step S2302 the fourth network element stores identification information and capability information.
  • the fourth network element creates an AMF context
  • the AMF context includes identification information and capability information of access and mobility management function network elements.
  • the fourth network element can also send response information to the access and mobility management function network element, and the response message is used to enable the access and mobility management function network element to confirm the fourth network element You have received identification and capability information.
  • reporting process of capability information may include three possible implementation modes:
  • the fourth network element is a network storage function network element.
  • the first implementation manner of the capability information reporting process can be further explained in conjunction with FIG. 28.
  • the fourth network element is a non-service interface function network element.
  • the fourth network element is a wireless network management function network element.
  • the third implementation manner of the capability information reporting process can be further explained in conjunction with FIG. 30.
  • the fourth network element stores the capability information of the access and mobility management function network element in advance, so that in the subsequent signaling interaction process between the wireless access network and the core network, the wireless
  • the functional network element on the access network side can obtain the capability information of the access and mobility management function network element from the fourth network element, thereby selecting the corresponding target interface function network element for signaling transmission according to the capability information to ensure wireless access.
  • the network and core network can transmit signaling normally.
  • the process for reporting capability information may include three possible implementations for further explanation.
  • the reporting process of capability information has a first implementation manner, and referring to FIG. 28, it is a flowchart of a first implementation manner of a reporting process of capability information.
  • the fourth network element is a network storage function network element. It includes the following steps:
  • step S2401 the network storage function network element obtains identification information of the access and mobility management function network element and capability information of the access and mobility management function network element.
  • NF registration request message (NF register request) needs to be sent to the network storage function network element.
  • This application is configured in the NF registration request message.
  • the identification information and capability information of the access and mobility management function network elements are sent to the network storage function network element through the network function registration request message, and the network storage function network element obtains the identification information by receiving the NF registration request message And access and capability information.
  • the activation of the access and mobility management network element refers to the activation or initialization of the access and mobility management network element.
  • Step S2402 the network storage function network element stores identification information and capability information.
  • the network storage function network element stores identification information and capability information, and can also send an NF registration response message (NF register response) to the access and mobility management function network element to save the network storage function network element with the saved identifier The status of the information and capability information is notified to the access and mobility management function network element.
  • NF register response NF register response
  • the network storage function network element obtains the access element and mobility management function network element identification information and capability information, so that in the subsequent signaling interaction process between the radio access network and the core network,
  • the functional network elements on the radio access network side can query the capability information from the network storage functional network elements, and then select the corresponding interface functional network elements for signaling transmission based on the capability information to ensure normal transmission between the radio access network and the core network. Signaling.
  • the reporting process of capability information has a second implementation manner.
  • FIG. 29 it is a flowchart of a second implementation manner of the reporting process of capability information.
  • the fourth network element is a non-service interface function network element. It includes the following steps:
  • Step S2501 the access and mobility management function network element sends identification information and capability information to the NGAP protocol layer of the core network.
  • the access and mobility management function network element when the access and mobility management function network element is started, it can send an AMF onboarding notification message to the NGAP protocol layer of the core network.
  • This application configures the access and mobility management function network in the AMF onboarding notification message.
  • the identification information and capability information of the element are sent to the NGAP protocol layer of the core network through the AMF online notification message and the identification information and capability information of the access and mobility management function network element.
  • Step S2502 the non-service interface function network element sends a request message to the NGAP protocol layer of the core network.
  • the request message is an NG interface setup request message (NG setup request), which is used for the non-service interface function network element to establish a communication connection with the NGAP protocol layer of the core network.
  • NG setup request NG interface setup request message
  • Step S2503 The non-service interface function network element receives identification information and capability information from the NGAP protocol layer of the core network.
  • the NGAP protocol layer of the core network sends an NG interface setup response message (NG setup response) to the non-service interface function network element.
  • This application configures the identification information and capability information of the access and mobility management function network elements in the NG interface establishment response message, and sends the identification information and capability information of the access and mobility management function network elements to the NG interface establishment response message.
  • NGAP protocol layer of the core network After receiving the NG interface setup request message, the NGAP protocol layer of the core network sends an NG interface setup response message (NG setup response) to the non-service interface function network element.
  • This application configures the identification information and capability information of the access and mobility management function network elements in the NG interface establishment response message, and sends the identification information and capability information of the access and mobility management function network elements to the NG interface establishment response message.
  • NGAP protocol layer of the core network After receiving the NG interface setup request message, the NGAP protocol layer of the core network sends an NG interface setup response message (NG setup response) to the non-service interface
  • Step S2504 the non-service interface function network element stores identification information and capability information.
  • the non-service interface function network element generates an AMF context according to the identification information and capability information received from the NGAP protocol layer of the core network.
  • AMF context For the content of the AMF context, see Table 1 and the content of step S303 in this application. No longer.
  • the non-service interface function network element obtains the access element and mobility management function network element identification information and capability information, so that the subsequent signaling interaction process between the radio access network and the core network
  • the functional network element can query the capability information from the non-service interface functional network element, and then select the corresponding interface functional network element for signaling transmission based on the capability information, ensuring that the wireless access network and the core network Can normally transmit signaling.
  • the reporting process of capability information has a third implementation manner. See FIG. 30, which is a flowchart of a third implementation manner of the reporting process of capability information.
  • the fourth network element is a wireless network management function network element. It includes the following steps:
  • Step S2601 the access and mobility management function network element sends identification information and capability information to the NGAP protocol layer of the core network.
  • the access and mobility management function network element when the access and mobility management function network element is started, it can send an AMF onboarding notification message to the NGAP protocol layer of the core network.
  • This application configures the access and mobility management function network in the AMF onboarding notification message.
  • the identification information and capability information of the element are sent to the NGAP protocol layer of the core network through the AMF online notification message and the identification information and capability information of the access and mobility management function network element.
  • Step S2602 the non-service interface function network element sends a request message to the NGAP protocol layer of the core network.
  • the request message is an NG interface setup request message (NG setup request), which is used for the non-service interface function network element to establish a communication connection with the NGAP protocol layer of the core network.
  • NG setup request NG interface setup request message
  • Step S2603 the non-service interface function network element receives identification information and capability information from the NGAP protocol layer of the core network.
  • the NGAP protocol layer of the core network sends an NG interface setup response message (NG setup response) to the non-service interface function network element.
  • This application configures the identification information and capability information of the access and mobility management function network elements in the NG interface establishment response message, and sends the identification information and capability information of the access and mobility management function network elements to the NG interface establishment response message.
  • NGAP protocol layer of the core network After receiving the NG interface setup request message, the NGAP protocol layer of the core network sends an NG interface setup response message (NG setup response) to the non-service interface function network element.
  • This application configures the identification information and capability information of the access and mobility management function network elements in the NG interface establishment response message, and sends the identification information and capability information of the access and mobility management function network elements to the NG interface establishment response message.
  • NGAP protocol layer of the core network After receiving the NG interface setup request message, the NGAP protocol layer of the core network sends an NG interface setup response message (NG setup response) to the non-service interface
  • Step S2604 the wireless network management function network element receives identification information and capability information from the non-service interface function network element.
  • the non-service interface function network element After receiving the identification information and capability information from the NGAP protocol layer of the core network, the non-service interface function network element sends an AMF capability report message (AMF N2 Capability Report) to the wireless network management function network element.
  • AMF N2 Capability Report AMF N2 Capability Report
  • the AMF capability report message carries the identification information. And ability information. Therefore, the wireless network management function network element receives the identification information and the capability information through the AMF capability report message.
  • Step S2605 the network element of the wireless network management function saves identification information and capability information.
  • the wireless network management function network element generates an AMF context according to the identification information and capability information received from the non-service interface function network element.
  • AMF context For the content of the AMF context, see Table 1 and the content of step S303 in this application. No longer.
  • the wireless network management function network element can send an AMF capability report confirmation message (AMF N2 capability report) to the non-service interface function network element after generating the AMF context, which is used to save the identity of the wireless network management function network element.
  • AMF N2 capability report AMF N2 capability report
  • the status of the information and capability information is notified to the non-service interface function network element.
  • the wireless network management function network element obtains access and mobility management function network element identification information and capability information, so that in the subsequent signaling interaction process between the wireless access network and the core network ,
  • the functional network element on the radio access network side can query the capability information from the wireless network management function network element, so as to select the corresponding interface function network element for signaling transmission according to the capability information, and ensure that the radio access network and the core network can communicate with each other. Signaling is transmitted normally.
  • each solution of the method for interface compatibility of signaling transmission provided in the embodiments of the present application is described from the perspective of each network element itself and from the perspective of interaction between the network elements.
  • each network element such as the above-mentioned wireless network management function network element, wireless resource control network element, non-service interface function network element, domain name system service network element, and network storage function network element, includes The corresponding hardware structure and / or software modules for performing each function are described.
  • this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is performed by hardware or computer software-driven hardware depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
  • An interface-compatible device for signaling transmission may include a receiving module 2701 and a processing module 2702, as shown in FIG. 31.
  • the interface compatible device transmitted by the signaling may be used to perform the operations of the first network element in the foregoing FIG. 4.
  • the receiving module 2701 is used to obtain the capability information of the access and mobility management function network element, and the capability information is used to indicate that the access and mobility management function network element has the capability of transmitting signaling through the target interface function network element and the wireless access network .
  • the processing module 2702 is configured to select a target interface function network element according to the capability information, and the target interface function network element is used to transmit signaling between the access and mobility management function network element and the wireless access network.
  • the interface compatible device for signaling transmission provided by the embodiment of the present invention can obtain the capability information of the access and mobility management function network element, and select the corresponding target interface function network element according to the capability information, so that it can pass the target
  • the interface function network element performs signaling transmission with the core network access and mobility management function network element to ensure normal signaling transmission between the radio access network and the core network.
  • the capability information is used to indicate that the access and mobility management function network element has the capability to transmit signaling to the radio access network through the non-service interface function network element; or, it is used to indicate the access and mobility management function
  • the network element has the ability to transmit signaling with the wireless network management function network element and the wireless access network; or, it is used to indicate that the access and mobility management function network element has a non-service interface function network element or a wireless network management function network
  • the interface-compatible device can select a corresponding target interface function network element according to the capability information indication, thereby ensuring normal signaling transmission between the radio access network and the core network.
  • the target interface function network element may be a non-service interface function network element; or it may be a wireless network management function network element; or it may be any of a non-service interface function network element or a wireless network management function network element.
  • the target interface function network element can have multiple choices and can be flexibly deployed to ensure normal signaling transmission between the radio access network and the core network in various networking situations.
  • the interface compatible device for signaling transmission provided by the embodiment of the present invention further includes: a sending module 2703, configured to send request information to the second network element.
  • the receiving module 2701 is specifically configured to receive capability information from a second network element.
  • the sending module 2703 is configured to send request information to the second network element.
  • the receiving module 2701 is further configured to receive identification information of a mobility management function network element from a second network element.
  • the processing module 2702 is further configured to obtain capability information from the first network element according to the identification information.
  • the first network element obtains the capability information of the access and mobility management function network element from the second network element. Therefore, the first network element can select the target interface function network element according to the capability information and pass the target interface function network.
  • the element performs signaling transmission with the access and mobility management function network elements of the core network to ensure normal transmission of signaling between the radio access network and the core network.
  • the sending module 2303 is configured to send request information to the second network element.
  • the receiving module 2701 is further configured to receive identification information of a mobility management function network element from a second network element.
  • the sending module 2703 is further configured to send the identification information to the third network element.
  • the receiving module 2701 is further configured to receive capability information from a third network element.
  • the first network element obtains the capability information of the access and mobility management function network element from the third network element. Therefore, the first network element can select the target interface function network element according to the capability information and pass the target interface function network.
  • the unit performs signaling transmission with the access and mobility management function network elements to ensure normal transmission of signaling between the radio access network and the core network.
  • the third network element is a non-service interface function network element; or the third network element is a non-service interface function network element or a wireless network management function network element; or the third network element is a wireless network management function Network element.
  • the third network element has multiple options and can be flexibly deployed to ensure normal signaling transmission between the radio access network and the core network under various networking situations.
  • the capability information is used to indicate that the access and mobility management function network element has the capability to transmit signaling to the radio access network through the non-service interface function network element
  • the processing module 2702 is specifically used to select the non-service interface
  • the functional network element serves as the target interface functional network element; or, the capability information is used to indicate that the access and mobility management functional network element has the capability to transmit signaling through the wireless network management functional network element and the wireless access network.
  • the processing module 2702 also Used to select the wireless network management function network element as the target interface function network element; or, the capability information is used to indicate that the access and mobility management function network element has at least one of the non-service interface function network element or the wireless network management function network element.
  • a processor module 2702 has the capability of transmitting signaling with the radio access network, and is also used to select a non-service interface function network element or a wireless network management function network element as a target interface function network element. Therefore, the first network element can select a corresponding target interface function network element according to the capability information indication, thereby ensuring normal signaling transmission between the radio access network and the core network.
  • the second network element is a network storage function network element; or the second network element is a domain name system service network element or a wireless network management function network element; or the second network element is a domain name system service network element.
  • the second network element has multiple options for flexible deployment, ensuring normal transmission of signaling between the wireless access network and the core network under various networking scenarios.
  • the sending module 2703 is further configured to send the user equipment registration request message to the access and mobility management function network element through the target interface function network element.
  • the receiving module 2701 is further configured to receive user equipment context information from the access and mobility management function network element through the target interface function network element. Therefore, the first network element performs signaling transmission with the access and mobility management function network element through the target interface function network element, because the target function network element is the capability of the first network element according to the access and mobility management function network element The information is selected, therefore, normal transmission signaling between the radio access network and the core network can be guaranteed.
  • the sending module 2703 is further configured to send a user equipment registration request message to the access and mobility management function network element.
  • the receiving module 2701 is further configured to receive user equipment context information from an access and mobility management function network element. Therefore, the first network element simultaneously performs signaling transmission as the target interface function network element and the access and mobility management function network element, which can ensure normal transmission of signaling between the radio access network and the core network.
  • the receiving module 2701, the processing module 2702, and the sending module 2703 in the interface compatible device of the signaling transmission may also implement other operations or functions of the first network element in the foregoing method, and details are not described herein again.
  • the interface compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the network element of the wireless network management function in FIG. 9. E.g:
  • the sending module 2703 is configured to send request information to a network storage function network element.
  • the request information is an AMF service discovery request message (NF service discovery request), which is used by the network storage function network element to query the access and mobility management function network elements available to the core network.
  • the receiving module 2701 is configured to receive identification information and capability information from a network storage function network element.
  • the wireless network management function network element obtains the capability information of the access and mobility management function network element from the network storage function network element, so that the wireless network management function network element can select a target according to the capability information.
  • the interface function network element performs signaling transmission with the target interface function network element and the access and mobility management function network element to ensure normal signaling transmission between the radio access network and the core network.
  • the interface compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the radio resource control network element in FIG. 10.
  • the sending module 2703 is configured to send request information to a domain name system service network element.
  • the request information is a DNS query request message (DNS query request), which is used by the domain name system service network element to query the user equipment and the available access and mobility management function network elements.
  • DNS query request a DNS query request message
  • the receiving module 2701 is configured to receive identification information and capability information from a domain name system service network element.
  • the radio resource control network element obtains the capability information of the access and mobility management function network element from the domain name system service network element, so that the radio resource control network element can select the target interface function according to the capability information
  • the network element performs signaling transmission with the target interface function network element and the access and mobility management function network element to ensure normal signaling transmission between the radio access network and the core network.
  • the interface compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the radio resource control network element in FIG. 11.
  • the sending module 2703 is configured to send request information to a wireless network management function network element.
  • the request information is a UE directed request message (UE message direction request), and the UE directed request message carries a message type (message type), for example, the message type may include: uplink non-access stratum (NAS) message, etc. Wait.
  • the UE orientation request message is generated according to the user equipment sending a user equipment registration request message to the radio resource control network element.
  • the receiving module 2701 is configured to receive identification information and capability information from a wireless network management function network element.
  • the radio resource control network element obtains the capability information of the access and mobility management function network element from the radio network management function network element, so that the radio resource control network element can select a target interface according to the capability information.
  • the functional network element performs signaling transmission with the target interface functional network element and the access and mobility management functional network element to ensure normal signaling transmission between the radio access network and the core network.
  • the interface compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the non-service interface function network element in FIG. 12.
  • the sending module 2703 is configured to send request information to a domain name system service network element.
  • the request information is a DNS query request message (DNS query request).
  • DNS query request a DNS query request message
  • the receiving module 2701 is configured to receive identification information and capability information from a domain name system service network element.
  • the sending module 2703 is configured to receive identification information and capability information from a domain name system service network element.
  • the non-service interface function network element obtains the capability information of the access and mobility management function network element from the domain name system service network element, so that the radio resource control network element can select a target according to the capability information.
  • the interface function network element performs signaling transmission with the target interface function network element and the access and mobility management function network element to ensure normal signaling transmission between the radio access network and the core network.
  • the interface compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the network element of the wireless network management function in FIG. 13. E.g:
  • the sending module 2703 is configured to send request information to a network storage function network element.
  • the request information is an AMF discovery service request message (NF service discovery request).
  • the receiving module 2701 is configured to receive identification information from a network storage function network element.
  • the processing module 2702 is configured to obtain capability information from the wireless network management function network element according to the identification information.
  • the wireless network management function network element obtains the capability information of the access and mobility management function network element from the AMF context type saved by itself according to the identification information received from the network storage function network element, so that The wireless network management function network element can select the target interface function network element according to the capability information, and perform signalling transmission through the target interface function network element and the access and mobility management function network element to ensure that between the wireless access network and the core network Able to transmit signaling normally.
  • the interface compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the non-service interface function network element in FIG. 14.
  • the sending module 2703 is configured to send request information to a domain name system service network element.
  • the request information is a DNS query request message (DNS query request).
  • DNS query request a DNS query request message
  • the receiving module 2701 is configured to receive identification information from a domain name system service network element.
  • the processing module 2702 is configured to obtain capability information from the non-service interface function network element according to the identification information.
  • the non-service interface function network element obtains the capability information of the access and mobility management function network element from the AMF context type saved by itself according to the identification information received from the network storage function network element. Therefore, the non-service interface function network element can select the target interface function network element according to the capability information, and perform signaling transmission with the access and mobility management function network element through the target interface function network element to ensure the wireless access network and the core network. Signaling can be transmitted between them normally.
  • the interface compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the network element of the wireless network management function in FIG. 15.
  • the sending module 2703 is configured to send request information to a network storage function network element.
  • the request information is an AMF discovery service request message (NF service discovery request).
  • the receiving module 2701 is configured to receive identification information from a network storage function network element.
  • the sending module 2703 is configured to send identification information to the non-service interface function network element.
  • the receiving module 2701 is configured to receive capability information from a non-service interface function network element.
  • the wireless network management function network element obtains the capability information of the access and mobility management function network element from the non-service interface function network element according to the identification information received from the network storage function network element. Therefore, the wireless network management function network element can select the target interface function network element according to the capability information, and perform signalling transmission through the target interface function network element and the access and mobility management function network element to ensure the wireless access network and the core network. Can normally transmit signaling.
  • the interface-compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the radio resource control network element in FIG. 16.
  • the sending module 2703 is configured to send request information to a domain name system service network element.
  • the request information is an AMF discovery service request message (NF service discovery request).
  • the receiving module 2701 is configured to receive identification information from a domain name system service network element.
  • the sending module 2703 is configured to send identification information to the non-service interface function network element.
  • the receiving module 2701 is configured to receive capability information from a non-service interface function network element.
  • the radio resource control network element obtains the capability information of the access and mobility management function network element from the non-service interface function network element according to the identification information received from the domain name system service network element, so that The radio resource control network element can select the target interface function network element according to the capability information, and perform signalling transmission through the target interface function network element and the access and mobility management function network element to ensure that the wireless access network and the core network can communicate with each other. Signaling is transmitted normally.
  • the interface compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the radio resource control network element in FIG. 17.
  • the sending module 2703 is configured to send request information to a domain name system service network element.
  • the request information is an AMF discovery service request message (NF service discovery request).
  • the receiving module 2701 is configured to receive identification information from a domain name system service network element.
  • the sending module 2703 is configured to send identification information to a wireless network management function network element.
  • the receiving module 2701 is configured to receive capability information from a wireless network management function network element.
  • the radio resource control network element obtains the capability information of the access and mobility management function network element from the wireless network management function network element according to the identification information received from the domain name system service network element, thereby, The radio resource control network element can select the target interface function network element according to the capability information, and perform signaling transmission through the target interface function network element and the access and mobility management function network element to ensure that the radio access network and the core network can function normally. Transmission signaling.
  • the interface compatible device for signaling transmission shown in FIG. 32 may be specifically configured to perform operations of the non-service interface function network element in FIG. 18.
  • the sending module 2703 is configured to send request information to a domain name system service network element.
  • the request information is a DNS query request message (DNS query request).
  • DNS query request The receiving module 2701 is configured to receive identification information from a domain name system service network element.
  • the sending module 2703 is configured to send identification information to a wireless network management function network element.
  • the receiving module 2701 is configured to receive capability information from a wireless network management function network element.
  • the non-service interface function network element obtains the capability information of the access and mobility management function network element from the wireless network management function network element according to the identification information received from the domain name system service network element. Therefore, the non-service interface function network element can select the target interface function network element according to the capability information, and perform signaling transmission with the access and mobility management function network element through the target interface function network element to ensure the wireless access network and the core network. Signaling can be transmitted between them normally.
  • the interface-compatible device for signaling transmission shown in FIG. 31 may be configured to perform the operations of the fourth network element in FIG. 4.
  • the receiving module 2701 is configured to obtain identification information of the access and mobility management function network element and capability information of the access and mobility management function network element.
  • the processing module 2702 is configured to save identification information and capability information.
  • the fourth network element stores the capability information of the access and mobility management function network element in advance, so that during the subsequent signaling interaction between the wireless access network and the core network, the wireless
  • the functional network element on the access network side can obtain the capability information of the access and mobility management function network element from the fourth network element, thereby selecting the corresponding target interface function network element for signaling transmission according to the capability information to ensure wireless access.
  • the network and core network can transmit signaling normally.
  • FIG. 33 is another schematic structural diagram of an interface-compatible device for signaling transmission involved in the foregoing embodiment.
  • the interface compatible device for the signaling transmission includes a transceiver 2801, a processor 2802, and a memory 2803, as shown in FIG. 33.
  • the memory 2803 is configured to be coupled to the processor 2802, and stores a computer program 2804 necessary for the interface compatible device of the signaling transmission.
  • the processor 2802 is configured for other operations or functions of the first network element.
  • the transceiver 1104 is configured to implement communication between the first network element and the second / third network element.
  • the first network element obtains the capability information of the access and mobility management function network element, and selects the corresponding target interface function network element according to the capability information, so that the first network element can communicate with the core through the target interface function network element.
  • Network access and mobility management function network elements perform signaling transmission to ensure that signaling can be normally transmitted between the wireless access network and the core network.
  • the processor 2802 is specifically configured to perform other operations or functions of the fourth network element.
  • the transceiver 1104 is used to implement communication between the first network element and the non-service interface function network element, the NGAP protocol layer of the core network, and the access and mobility management function network element.
  • the fourth network element previously stores the capability information of the access and mobility management function network element, so that during the subsequent signaling interaction between the wireless access network and the core network, the functions of the wireless access network side
  • the network element can obtain the capability information of the access and mobility management function network element from the fourth network element, so as to select the corresponding target interface function network element for signaling transmission according to the capability information, and ensure that between the wireless access network and the core network Able to transmit signaling normally
  • an embodiment of the present application further provides a computer-readable storage medium 2901.
  • the computer-readable storage medium stores instructions, and when the computer-readable storage medium runs on the computer, the computer executes the foregoing aspects Methods.
  • the storage medium 2901 may be a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium, so that the functional network on the wireless access network side
  • the element selects the corresponding target interface function network element for signalling transmission according to the capability information to ensure that the radio access network and the core network can normally transmit signalling.
  • the embodiments of the present application further provide a computer program product containing instructions, which when executed on a computer, causes the computer to execute the methods described in the above aspects. Therefore, the functional network element on the radio access network side selects the corresponding target interface functional network element for signaling transmission according to the capability information, thereby ensuring that the radio access network and the core network can normally transmit signaling.
  • FIG. 35 is a schematic structural diagram of the chip system.
  • the chip system includes a processor 3001, configured to support the foregoing apparatus or user equipment to implement the functions involved in the foregoing aspects, for example, to generate or process information involved in the foregoing methods.
  • the chip system further includes a memory 3002, where the memory is configured to store program instructions and data necessary for the interface-compatible device for signaling transmission.
  • the chip system can be composed of chips, and can also include chips and other discrete devices. Therefore, the functional network element on the radio access network side selects the corresponding target interface functional network element for signaling transmission according to the capability information, thereby ensuring that the radio access network and the core network can normally transmit signaling.
  • the controller / processor used to perform the above-mentioned signaling compatible interface compatible device may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and field programmable Gate Array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure.
  • the processor may also be a combination that implements computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the steps of the method or algorithm described in combination with the disclosure of this application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage known in the art Media.
  • An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may reside in an ASIC.
  • the ASIC may be located in a radio access network device.
  • the processor and the storage medium may also exist as discrete components in the radio access network device.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (Solid State Disk (SSD)), and the like.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a DVD
  • a semiconductor medium for example, a solid state disk (Solid State Disk (SSD)

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Abstract

本申请提供了一种信令传输的接口兼容方法及装置。其中，该方法包括：第一网元获取接入和移动性管理功能网元的能力信息，能力信息用于指示接入和移动性管理功能网元具有通过目标接口功能网元与无线接入网传输信令的能力；第一网元根据能力信息选择目标接口功能网元，目标接口功能网元用于接入和移动性管理功能网元与无线接入网间信令的传输。因此，本申请提供的技术方案，第一网元获取了接入和移动性管理功能网元的能力信息，并根据能力信息选择对应的目标接口功能网元，从而，第一网元可以通过目标接口功能网元与核心网的接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。

Description

信令传输的接口兼容方法及装置
本申请要求于2018年09月17日提交国家知识产权局、申请号为201811083183.2、发明名称为“信令传输的接口兼容方法及装置”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
本申请涉通信技术领域，尤其涉及一种信令传输的接口兼容方法及装置。
背景技术
第三代合作伙伴计划(third generation partnership project，3GPP)标准定义了第五代(the 5th-Generation，5G)通信中核心网的服务化架构。其中，5G核心网的控制面功能被分解成多个功能网元(network function，NF)，各个功能网元之间通过服务化的接口进行信令传输；此外，3GGP标准还定义了5G核心网的接入和移动性管理功能网元(access and mobility management function，AMF)与无线接入网(radio access network，RAN)之间通过基于NGAP协议(NG应用层协议)的非服务化接口进行信令传输。
目前，核心网与无线接入网之间的通信协议处理较为复杂，这样会导致信令的传输效率低下，从而使得信令传输的延时较大，甚至无法正常传输信令。
发明内容
本申请提供了一种信令传输的接口兼容方法及装置，解决由于核心网与无线接入网之间的通信协议处理较为复杂，导致的信令传输效率低下，甚至无法正常传输信令的问题。
第一方面，本申请提供了一种信令传输的接口兼容方法，包括：
第一网元获取接入和移动性管理功能网元(例如，AMF网元)的能力信息，能力信息用于指示接入和移动性管理功能网元具有通过目标接口功能网元与无线接入网传输信令的能力。第一网元根据能力信息选择目标接口功能网元，目标接口功能网元用于接入和移动性管理功能网元与无线接入网间信令的传输。
根据上述方法，第一网元获取了接入和移动性管理功能网元的能力信息，并根据能力信息选择对应的目标接口功能网元，从而，第一网元可以通过目标接口功能网元与核心网的接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
结合第一方面，在第一方面的第一种可能的实现方式中，第一网元获取接入和移动性管理功能网元的能力信息，包括：第一网元向第二网元发送请求信息。第一网元从第二网元接收能力信息。由此，第一网元从第二网元获取了接入和移动性管理功能网元的能力信息，从而，第一网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与核心网的接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
结合第一方面，在第一方面的第二种可能的实现方式中，第一网元获取接入和移动性 管理功能网元的能力信息，包括：第一网元向第二网元发送请求信息。第一网元从第二网元接收移动性管理功能网元的标识信息。第一网元根据标识信息从第一网元中获取能力信息。由此，第一网元从第一网元获取了接入和移动性管理功能网元的能力信息，从而，第一网元可根据能力信息选择对应的目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证第一网元和移动性管理功能网元之间能够正常传输信令。
结合第一方面，在第一方面的第三种可能的实现方式中，第一网元获取接入和移动性管理功能网元的能力信息，包括：第一网元向第二网元发送请求信息。第一网元从第二网元接收移动性管理功能网元的标识信息。第一网元向第三网元发送标识信息。第一网元从第三网元接收能力信息。由此，第一网元从第三网元获取了接入和移动性管理功能网元的能力信息，从而，第一网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
结合第一方面的第三种可能的实现方式，在第一方面的第四种可能的实现方式中，第一网元为无线网络管理功能网元(例如，radio network management function，RNMF网元)，第三网元为非服务化接口功能网元(例如，N2接口功能网元)。或者，第一网元为无线资源控制网元(例如,radio resource control，RRC网元)，第三网元为非服务化接口功能网元或者无线网络管理功能网元。或者，第一网元为非服务化接口功能网元，第三网元为无线网络管理功能网元。由此，第一网元和第三网元拥有多种组合方式，可进行灵活部署，保证在各种组网情况下，无线接入网和核心网之间能够正常传输信令。
结合第一方面和第一方面的第一种至第四种可能的实现方式中的任意一种，在第一方面的第五种可能的实现方式中，第一网元根据能力信息选择目标接口功能网元，包括：能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元与无线接入网传输信令的能力，第一网元选择非服务化接口功能网元作为目标接口功能网元。或者，能力信息用于指示接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力，第一网元选择无线网络管理功能网元作为目标接口功能网元。或者，能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力，第一网元选择非服务化接口功能网元或无线网络管理功能网元作为目标接口功能网元。由此，第一网元可以根据能力信息的指示选择对应的目标接口功能网元，从而保证无线接入网和核心网之间能够正常传输信令。
结合第一方面和第一方面的第一种至第五种可能的实现方式中的任意一种，在第一方面的第六种可能的实现方式中，还包括：第一网元通过目标接口功能网元向接入和移动性管理功能网元发送用户设备注册请求消息(例如，UE registration request)。第一网元通过目标接口功能网元从接入和移动性管理功能网元接收用户设备上下文信息。由此，第一网元通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，由于目标功能网元是第一网元根据接入和移动性管理功能网元的能力信息选择的，因此，能够保证无线接入网和核心网之间正常传输信令。
结合第一方面和第一方面的第一种至第五种可能的实现方式中的任意一种，在第一方 面的第七种可能的实现方式中，还包括：第一网元向接入和移动性管理功能网元发送用户设备注册请求消息。第一网元从接入和移动性管理功能网元接收用户设备上下文信息。由此，第一网元同时作为目标接口功能网元与接入和移动性管理功能网元进行信令传输，能够保证无线接入网和核心网之间正常传输信令。
结合第一方面的第一种至第七种可能的实现方式中的任意一种，在第一方面的第八种可能的实现方式中，还包括：第一网元为无线网络管理功能网元，第二网元为网络存储功能网元(例如，network repository function，NRF网元)。或者，第一网元为无线资源控制网元，第二网元为域名系统服务网元(例如，DNS server网元)或者无线网络管理功能网元。或者，第一网元为非服务化接口功能网元，第二网元为域名系统服务网元。由此，第一网元和第二网元拥有多种组合方式，可进行灵活部署，保证在各种组网情况下，无线接入网和核心网之间能够正常传输信令。
第二方面，本申请还提供了一种信令传输的接口兼容方法，包括：第四网元获取接入和移动性管理功能网元的标识信息和接入和移动性管理功能网元的能力信息。第四网元保存标识信息和能力信息。
根据上述方法，第四网元预先保存了接入和移动性管理功能网元的能力信息，从而，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从第四网元获取接入和移动性管理功能网元的能力信息，从而根据能力信息选择对应的目标接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
结合第二方面，在第二方面的第一种可能的实现方式中，第四网元为网络存储功能网元或者无线网络管理功能网元或者非服务化接口功能网元。由此，第四网元可以有多种选择方式，便于在组网时灵活部署，保证在各种组网情况下，第四网元都可以保存标识信息和能力信息。
结合第二方面和第二方面的第一种可能的实现方式中的任意一种，在第二方面的第二种可能的实现方式中，第四网元为无线网络管理功能网元时，第四网元获取接入和移动性管理功能网元的标识信息和接入和移动性管理功能网元的能力信息，包括：第四网元从非服务化接口功能网元接收标识信息和能力信息。由此，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从无线网络管理功能网元查询能力信息，从而根据能力信息选择对应的接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
结合第二方面和第二方面的第一种可能的实现方式中的任意一种，在第二方面的第三种可能的实现方式中，第四网元为非服务化接口功能网元时，第四网元获取接入和移动性管理功能网元的标识信息和接入和移动性管理功能网元的能力信息，包括：第四网元从核心网的NGAP协议层接收标识信息和能力信息。由此，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从非服务化接口功能网元查询能力信息，从而根据能力信息选择对应的接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
结合第二方面和第二方面的第一种可能的实现方式中的任意一种，在第二方面的第四种可能的实现方式中，第四网元为网络存储功能网元时，第四网元获取接入和移动性管理功能网元的标识信息和接入和移动性管理功能网元的能力信息，包括：第四网元从接入和 移动性管理功能网元接收标识信息和能力信息。由此，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从网络存储功能网元查询能力信息，从而根据能力信息选择对应的接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
结合第二方面和第二方面的第一种至第四种可能的实现方式中的任意一种，在第二方面的第五种可能的实现方式中，能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元与无线接入网传输信令的能力；或者，能力信息用于指示接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力；或者，能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力。由此，在信令传输时，第一网元可以根据能力信息的指示选择对应的目标接口功能网元，从而保证无线接入网和核心网之间能够正常传输信令。
第三方面，本申请还提供一种信令传输的接口兼容装置，该信令传输的接口兼容装置具有实现上述方法中第一网元行为的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，上述信令传输的接口兼容装置的结构中包括处理器和收发器，处理器被配置为处理该信令传输的接口兼容装置执行上述方法中相应的功能。收发器用于实现上述信令传输的接口兼容装置与第二/第三网元之间的通信。信令传输的接口兼容装置还可以包括存储器，存储器用于与处理器耦合，其保存该信令传输的接口兼容装置必要的程序指令和数据。
根据上述装置，第一网元获取了接入和移动性管理功能网元的能力信息，并根据能力信息选择对应的目标接口功能网元，从而，第一网元可以通过目标接口功能网元与核心网的接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
第四方面，本申请还提供一种信令传输的接口兼容装置，该信令传输的接口兼容装置具有实现上述方法中第四网元行为的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，上述信令传输的接口兼容装置的结构中包括处理器和收发器，处理器被配置为处理该信令传输的接口兼容装置执行上述方法中相应的功能。收发器用于实现上述信令传输的接口兼容装置与非服务化接口功能网元、核心网的NGAP协议层和接入和移动性管理功能网元之间的通信。信令传输的接口兼容装置还可以包括存储器，存储器用于与处理器耦合，其保存该信令传输的接口兼容装置必要的程序指令和数据。
根据上述装置，第四网元预先保存了接入和移动性管理功能网元的能力信息，从而，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从第四网元获取接入和移动性管理功能网元的能力信息，从而根据能力信息选择对应的目标接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
第五方面，本申请提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
第六方面，本申请提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
第七方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于支持上述装置或用户设备实现上述方面中所涉及的功能，例如，生成或处理上述方法中所涉及的信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存信令传输的接口兼容装置必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
附图说明
图1为无线接入网与核心网通过非服务化接口传输信令的示意图；
图2为无线接入网与核心网通过服务化接口传输信令的示意图；
图3为无线接入网与核心网无法正常传输信令的场景示意图；
图4为本申请提供的一种信令传输的接口兼容方法的流程图；
图5为本申请提供的一种兼容性的网络架构示意图；
图6为本申请提供的一种信令传输的接口兼容方法步骤S101的流程图；
图7为本申请提供的另一种信令传输的接口兼容方法步骤S101的流程图；
图8为本申请提供的又一种信令传输的接口兼容方法步骤S101的流程图；
图9为第一网元从第二网元获取能力信息的第一种实现方式的流程图；
图10为第一网元从第二网元获取能力信息的第二种实现方式的流程图；
图11为第一网元从第二网元获取能力信息的第三种实现方式的流程图；
图12为第一网元从第二网元获取能力信息的第四种实现方式的流程图；
图13为第一网元从第一网元获取能力信息的第一种实现方式的流程图；
图14为第一网元从第一网元获取能力信息的第二种实现方式的流程图；
图15为第一网元从第三网元获取能力信息的第一种实现方式的流程图；
图16为第一网元从第三网元获取能力信息的第二种实现方式的流程图；
图17为第一网元从第三网元获取能力信息的第三种实现方式的流程图；
图18为第一网元从第三网元获取能力信息的第四种实现方式的流程图；
图19为第一网元与接入和移动性管理功能网元的一种信令传输方法的流程图；
图20为第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第一种实现方式的流程图；
图21为第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第二种实现方式的流程图；
图22为第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第三种实现方式的流程图；
图23为第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第四种实现方式的流程图；
图24为第一网元与接入和移动性管理功能网元的另一种信令传输方法的流程图；
图25为第一网元与接入和移动性管理功能网元传输信令的第一种实现方式的流程图；
图26为第一网元与接入和移动性管理功能网元传输信令的第二种实现方式的流程图；
图27为本申请提供的一种能力信息上报的流程图；
图28为能力信息的上报流程第一种实现方式的流程图；
图29为能力信息的上报流程第二种实现方式的流程图；
图30为能力信息的上报流程第三种实现方式的流程图；
图31为本申请提供的一种信令传输的接口兼容装置的结构示意图；
图32为本申请提供的另一种信令传输的接口兼容装置的结构示意图；
图33为本申请提供的又一种信令传输的接口兼容装置的结构示意图；
图34为本申请提供的一种计算机可读存储介质的示意图；
图35为本申请提供的一种芯片系统的示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述。在本申请的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本申请中的“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，在本申请的描述中，“多个”是指两个或两个以上。
在对本申请实施例的技术方案说明之前，首先结合附图对本申请实施例的技术场景进行说明。
3GPP标准定义的5G核心网的控制面功能被分解成多个功能网元(Network Function，NF)，例如：AMF网元、网络存储功能网元(network repository function,NRF),等等。在3GPP标准定义的服务化架构的5G核心网中，各个功能网元之间建立直接连接，并通过服务化接口进行信令交互。但是，核心网的接入和移动性管理功能网元与无线接入网(radio access network，RAN)之间通过基于NGAP协议的非服务化接口进行信令传输。
图1为无线接入网与核心网通过非服务化接口传输信令的示意图。
如图1所示，无线接入网与核心网通过基于NGAP协议的N2接口连接。对于从无线接入网向核心网传输的信令来说，首先，信令由无线接入网的NGAP协议层处理，然后，通过N2接口发送给核心网的NGAP协议层，最后，由核心网的NGAP协议层将信令转发给接入和移动性管理功能网元。
图1中所涉及到的AMF网元可负责终端设备的注册、移动性管理、跟踪区更新流程等。AMF网元也可称为AMF设备或AMF实体。
图1中所涉及到的网络功能存储功能网元(network repository function，NRF)能够提供服务发现功能。可选的，NRF网元还能够维护核心网中有效的网络功能网元的信息。可选的，NRF网元还能够维护核心网中有效的网络功能网元支持的服务。
图2为无线接入网与核心网通过服务化接口传输信令的示意图。
如图2所示，为了使无线接入网与核心网之间也能够通过服务化的接口传输信令，一种方法是在无线接入网增加一个无线网络管理功能网元(radio network management function，RNMF)，无线网络管理功能网元与无线资源控制网元通过C1接口连接，无线网络管理功能网元对无线接入网的NGAP协议进行了服务化处理，并提供了服务化接口R2，从而，无线接入网可以通过服务化接口R2与核心网进行信令传输。
图3为无线接入网与核心网无法正常传输信令的场景示意图。
在图3所示部署的场景中，无线接入网通过增加无线网络管理功能网元提供了用于与核心网进行信令传输服务化接口；并且，由于无线网络管理功能网元对无线接入 网的NGAP协议进行了服务化处理，无线接入网去除了传统的NGAP协议层的功能，因而无法通过非服务化接口与核心网进行信令传输。此外，图3中的核心网不支持通过服务化接口与无线接入网传输信令，但保留了传统的NGAP协议层的功能，因此，核心网支持通过非服务化接口与无线接入网进行信令传输。由此可见，在图3所示的部署场景中，无线接入网支持通过服务化接口与核心网传输信令，而核心网支持通过非服务化接口与无线接入网传输信令，因此，无线接入网与核心网的信令传输使用的接口处理机制不同，无法正常传输信令。
本申请实施例提供了一种信令传输的接口兼容方法，以解决无线接入网与核心网之间由于信令传输使用的接口处理机制不同，而无法正常传输信令的问题。
图4为本申请提供的一种信令传输的接口兼容方法的流程图，如图4所示，该方法包括以下步骤：
步骤S101，第一网元获取接入和移动性管理功能网元的能力信息，能力信息用于指示接入和移动性管理功能网元具有通过目标接口功能网元与无线接入网传输信令的能力。
其中，第一网元可以通过以下3种方式中的任一种获取接入和移动性管理功能网元的能力信息：
在第一种可能的方式中：第一网元可以从第二网元中获取接入和移动性管理功能网元的能力信息。
第一网元可以通过第一种可能的方式获取接入和移动性管理功能网元的能力信息可以结合图6进一步描述。
在第二种可能的方式中：第一网元可以从第三网元中获取接入和移动性管理功能网元的能力信息。
第一网元可以通过第二种可能的方式获取接入和移动性管理功能网元的能力信息可以结合图7进一步描述。
在第三种可能的方式中：第一网元可以从第一网元中获取接入和移动性管理功能网元的能力信息。
第一网元可以通过第三种可能的方式获取接入和移动性管理功能网元的能力信息可以结合图8进一步描述。
另外，目标接口功能网元可以是非服务化接口功能网元；或者，可以是无线网络管理功能网元；或者，可以是非服务化接口功能网元或无线网络管理功能网元的任一个。
其中，非服务化接口功能网元是本申请将无线接入网的NGAP协议层的功能从无线接入网中独立出来，形成的一个独立的接口功能网元(可进一步称作N2接口功能网元)。非服务化接口功能网元通过C2接口与无线网络管理功能网元连接，通过N2接口与核心网侧的NGAP协议层连接，并通过C2接口和N2接口传输信令。
步骤S102，第一网元根据能力信息选择目标接口功能网元，目标接口功能网元用于接入和移动性管理功能网元与无线接入网间信令的传输。
其中，第一网元根据能力信息选择目标接口功能网元包括以下3种情况：
在第一种可能的情况中，能力信息用于指示接入和移动性管理功能网元具有通过 非服务化接口功能网元与无线接入网传输信令的能力，第一网元选择非服务化接口功能网元作为目标接口功能网元。
在第二种可能的情况中，能力信息用于指示接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力，第一网元选择无线网络管理功能网元作为目标接口功能网元。
在第三种可能的情况中，能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力，第一网元选择非服务化接口功能网元或无线网络管理功能网元作为目标接口功能网元。
在一个具体的应用场景中，第一网元根据能力信息选择目标接口功能网元的3种情况分别适用于无线接入网与核心网的3种组网场景。
参见图5所示，为本申请提供的无线接入网与核心网的组网场景示意图。其中，RNMF为无线网络管理功能网元；RAN-NGAP为非服务化接口功能网元；NGAP为核心网的NGAP协议层。
在第一种组网场景(场景1)中，接入和移动性管理功能网元具有通过非服务化接口功能网元与无线接入网传输信令的能力，在该场景下，第一网元选择非服务化接口功能网元作为目标接口功能网元。
在第二种组网场景(场景2)中，接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力，在该场景下，第一网元选择无线网络管理功能网元作为目标接口功能网元。
在第三种组网场景(场景3)中，接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力，在该场景下，第一网元选择非服务化接口功能网元或无线网络管理功能网元作为目标接口功能网元。
由此可见，本发明能够根据无线接入网与核心网的不同组网场景，选择不同的目标接口功能网元，从而保证在任意组网场景中，无线接入网都可以与核心网正常传输信令。
因此，本发明实施例提供的方法，第一网元获取了接入和移动性管理功能网元的能力信息，并根据能力信息选择对应的目标接口功能网元，从而，第一网元可以通过目标接口功能网元与核心网的接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在一个实施例中，参见图6，为本申请提供的一种信令传输的接口兼容方法步骤S101的流程图，如图6所示，第一网元获取接入和移动性管理功能网元的能力信息可以包括以下步骤：
步骤S201，第一网元向第二网元发送请求信息。
例如，请求信息用于查询核心网可用的接入和移动性管理功能网元，从而获取可用的接入和移动性管理功能网元的能力信息。
其中，第一网元从第二网元获取能力信息可以包括4种可能的实现方式：
在第一种可能的方式中，第一网元为无线网络管理功能网元，第二网元为网络存 储功能网元；
在第二种可能的方式中，第一网元为无线资源控制网元，第二网元为域名系统服务网元；
在第三种可能的方式中，第一网元为无线资源控制网元，第二网元为无线网络管理功能网元；
在第四种可能的方式中，第一网元为非服务化接口功能网元，第二网元为域名系统服务网元。
步骤S202，第一网元从第二网元接收能力信息。
其中，当第二网元接收到第一网元发送的请求信息时，第二网元查找核心网可用的接入和移动性管理功能网元，并将接入和移动性管理功能网元的标识信息和能力信息发送给第一网元。
第一网元可以从第二网元获取能力信息的第一种方式可以结合图9进一步描述。
第一网元可以从第二网元获取能力信息的第二种方式可以结合图10进一步描述。
第一网元可以从第二网元获取能力信息的第三种方式可以结合图11进一步描述。
第一网元可以从第二网元获取能力信息的第四种方式可以结合图12进一步描述。
因此，根据本发明实施例的方法，第一网元从第二网元获取了接入和移动性管理功能网元的能力信息，从而，第一网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与核心网的接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在另一个实施例中，参见图7，为本申请提供的另一种信令传输的接口兼容方法步骤S101的流程图，如图7所示，第一网元获取接入和移动性管理功能网元的能力信息可以包括以下步骤：
步骤S301，第一网元向第二网元发送请求信息。
例如，请求信息用于查询核心网可用的接入和移动性管理功能网元，从而获取可用的接入和移动性管理功能网元的标识信息。其中，标识信息用于标记接入和移动性管理功能网元唯一身份，具体可以是接入和移动性管理功能网元的互联网协议地址(internet protocol address，IP Address)或全限定域名(fully qualified domain name，FQDN)等，本发明不做限定
第一网元从第一网元获取能力信息可以包括2种可能的实现方式：
在第一种可能的方式中，第一网元为无线网络管理功能网元，第二网元为网络存储功能网元；
在第二种可能的方式中，第一网元为非服务化接口功能网元，第二网元为域名系统服务网元。
步骤S302，第一网元从第二网元接收移动性管理功能网元的标识信息。
其中，当第二网元接收到第一网元发送的请求信息时，第二网元查找可用的接入和移动性管理功能网元，并将接入和移动性管理功能网元的标识信息发送给第一网元。
步骤S303，第一网元根据标识信息从第一网元中获取能力信息。
其中，第一网元具体可以是无线网络管理功能网元或者非服务化接口功能网元中保存有AMF上下文的任意一个，AMF上下文包括接入和移动性管理功能网元的标识信 息和能力信息。第一网元可以根据从第二网元接收的标识信息，查询AMF上下文，在AMF上下文中查找到与标识信息对应的能力信息。
进一步地，AMF上下文可以是包含多个接入和移动性管理功能网元的标识信息和能力信息的列表，例如表1所示。在表1中，AMF ID表示接入和移动性管理功能网元的标识信息；AMF N2 capability表示接入和移动性管理功能网元的能力信息，其中，CN-NGAP Only用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元与无线接入网传输信令的能力，CN-NGAP not supported用于指示接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力，CN-NGAP Preferred用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力。
AMF ID AMF N2 capability
10.76.100.xxx CN-NGAP Only
10.61.100.xxx CN-NGAP not supported
10.91.100.xxx CN-NGAP Preferred
表2
第一网元可以从第一网元获取能力信息的第一种实现方式可以结合图13进一步描述；
第一网元可以从第一网元获取能力信息的第二种实现方式可以结合图14进一步描述。
因此，根据本发明实施例的方法，第一网元从第一网元获取了接入和移动性管理功能网元的能力信息，从而，第一网元可根据能力信息选择对应的目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证第一网元和移动性管理功能网元之间能够正常传输信令。
在又另一个实施例中，参见图8，为本申请提供的又一种信令传输的接口兼容方法步骤S101的流程图，如图8所示，第一网元获取接入和移动性管理功能网元的能力信息可以包括以下步骤：
步骤S401，第一网元向第二网元发送请求信息。
例如，请求信息用于查询核心网可用的接入和移动性管理功能网元，从而获取可用的接入和移动性管理功能网元的标识信息。其中，标识信息用于标记接入和移动性管理功能网元唯一身份，具体可以是接入和移动性管理功能网元的互联网协议地址(internet protocol address，IP Address)或全限定域名(fully qualified domain name，FQDN)等，本发明不做限定
其中，第一网元和第二网元包括3种可能的组合方式：
在第一种可能的方式中，第一网元为无线网络管理功能网元，第二网元为网络存储功能网元；
在第二种可能的方式中，第一网元为无线资源控制网元，第二网元为域名系统服务网元；
在第三种可能的方式中，第一网元为非服务化接口功能网元，第二网元为域名系 统服务网元。
步骤S402，第一网元从第二网元接收移动性管理功能网元的标识信息。
其中，当第二网元接收到第一网元发送的请求信息时，第二网元查找可用的接入和移动性管理功能网元，并将接入和移动性管理功能网元的标识信息发送给第一网元。
步骤S403，第一网元向第三网元发送标识信息。
其中，第一网元和第三网元包括4种可能的组合方式；
在第一种可能的方式中，第一网元为无线网络管理功能网元，第三网元为非服务化接口功能网元；
在第二种可能的方式中，第一网元为无线资源控制网元，第三网元为非服务化接口功能网元；
在第三种可能的方式中，第一网元为无线资源控制网元，第三网元为无线网络管理功能网元；
在第四种可能的方式中，第一网元为非服务化接口功能网元，第三网元为无线网络管理功能网元。
进一步地，第三网元具体可以是无线网络管理功能网元或者非服务化接口功能网元中保存有AMF上下文的任意一个。有关AMF上下文的具体描述请参照表1和步骤S303中的描述内容，此处不再赘述。
步骤S404，第一网元从第三网元接收能力信息。
其中，结合第一网元和第二网元包括3种可能的组合方式，以及第一网元和第三网元包括4种可能的组合方式，第一网元从第三网元获取能力信息可以包括4种可能的实现方式：
在第一种可能的方式中，第一网元为无线网络管理功能网元，第二网元为网络存储功能网元，第三网元为非服务化接口功能网元。
第一网元可以通过第一种可能的方式从第三网元获取能力信息可以结合图15进一步描述。
在第二种可能的方式中，第一网元为无线资源控制网元，第二网元为域名系统服务网元，第三网元为非服务化接口功能网元。
第一网元可以通过第二种可能的方式从第三网元获取能力信息可以结合图16进一步描述。
在第三种可能的方式中，第一网元为无线资源控制网元，第二网元为域名系统服务网元，第三网元为无线网络管理功能网元。
第一网元可以通过第三种可能的方式从第三网元获取能力信息可以结合图17进一步描述。
在第四种可能的方式中，第一网元为非服务化接口功能网元，第二网元为域名系统服务网元，第三网元为无线网络管理功能网元。
第一网元可以通过第四种可能的方式从第三网元获取能力信息可以结合图18进一步描述。
因此，根据本发明实施例的方法，第一网元从第三网元获取了接入和移动性管理功能网元的能力信息，从而，第一网元可根据能力信息选择目标接口功能网元，并通 过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
下面结合附图，对第一网元可以从第二网元获取能力信息的4种可能的实现方式做进一步描述。
在一个实施例中，第一网元从第二网元获取能力信息具有第一种实现方式，参见图9，为第一网元从第二网元获取能力信息的第一种实现方式的流程图，其中，第一网元为无线网络管理功能网元，第二网元为网络存储功能网元。具体包括以下步骤：
步骤S501，无线网络管理功能网元向网络存储功能网元发送请求信息。
例如，请求信息为AMF服务发现请求消息(NF service discovery request)，用于网络存储功能网元查询核心网可用的接入和移动性管理功能网元。
例如，AMF服务发现请求消息根据用户设备注册请求消息(UE registration request)生成。首先，用户设备向无线资源控制网元发送用户设备注册请求消息；然后，无线资源控制网元将用户设备注册请求消息转发给无线网络管理功能网元；最后，无线网络管理功能网元在接收到用户设备注册请求消息的情况下，向网络存储功能网元发送AMF服务发现请求消息。
步骤S502，无线网络管理功能网元从网络存储功能网元接收标识信息和能力信息。
例如，网络存储功能网元根据AMF服务发现请求消息查询核心网可用的接入和移动性管理功能网元，并将查找到的接入和移动性管理功能网元对应的标识信息和能力信息发送给无线网络管理功能网元。
例如，网络存储功能网元将标识信息和能力信息配置在AMF服务发现应答消息(NF service discovery response)中,通过AMF服务发现应答消息将标识信息和能力信息发送给无线网络管理功能网元。
因此，根据本发明实施例的方法，无线网络管理功能网元从网络存储功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线网络管理功能网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在另一个实施例中，第一网元从第二网元获取能力信息具有第二种实现方式，参见图10，为第一网元从第二网元获取能力信息的第二种实现方式的流程图，其中，第一网元为无线资源控制网元，第二网元为域名系统服务网元。具体包括以下步骤：
步骤S601，无线资源控制网元向域名系统服务网元发送请求信息。
例如，请求信息为DNS查询请求消息(DNS query request)，用于域名系统服务网元查询用户设备和可用的接入和移动性管理功能网元。
例如，DNS查询请求消息根据用户设备注册请求消息生成，具体可以包括：首先，用户设备向无线资源控制网元发送用户设备注册请求消息；然后，无线资源控制网元在接收到来自用户设备的用户设备注册请求消息的情况下，向域名系统服务网元发送DNS查询请求消息。
步骤S602，无线资源控制网元从域名系统服务网元接收标识信息和能力信息。
例如，域名系统服务网元根据DNS查询请求消息查询核心网可用的接入和移动性管理功能网元，并将查找到的接入和移动性管理功能网元对应的标识信息和能力信息 发送给无线资源控制网元。
例如，域名系统服务网元将标识信息和能力信息包含在DNS查询应答消息(DNS query response)中，通过DNS查询应答消息将标识信息和能力信息发送给无线网络管理功能网元。
因此，根据本发明实施例的方法，无线资源控制网元从域名系统服务网元获取了接入和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，第一网元从第二网元获取能力信息具有第三种实现方式，参见图11，为第一网元从第二网元获取能力信息的第三种实现方式的流程图，其中，第一网元为无线资源控制网元，第二网元为无线网络管理功能网元。具体包括以下步骤：
步骤S701，无线资源控制网元向无线网络管理功能网元发送请求信息。
例如，请求信息为UE定向请求消息(UE message direction request)，UE定向请求消息携带消息类型(message type)，例如消息类型可以包括：上行非接入层(non-access stratum，NAS)消息，等等。UE定向请求消息根据用户设备向无线资源控制网元发送用户设备注册请求消息生成。
例如，无线网络管理功能网元根据UE定向请求消息携带的消息类型判断是否获取标识信息和能力信息，当消息类型为上行非接入层消息时，无线网络管理功能网元获取标识信息和能力信息。
步骤S702，无线资源控制网元从无线网络管理功能网元接收标识信息和能力信息。
其中，本实施例中无线网络管理功能网元获取标识信息和能力信息的具体流程可以参照或借鉴本发明的其他实施例的步骤实现，例如步骤S501-步骤S502、步骤S901-步骤S903、步骤S1101-步骤S1104，此处不再赘述。
因此，根据本发明实施例的方法，无线资源控制网元从无线网络管理功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，第一网元从第二网元获取能力信息具有第四种实现方式，参见图12，为第一网元从第二网元获取能力信息的第四种实现方式的流程图，其中，第一网元为非服务化接口功能网元，第二网元为域名系统服务网元。具体包括以下步骤：
步骤S801，非服务化接口功能网元向域名系统服务网元发送请求信息。
例如，请求信息为DNS查询请求消息(DNS query request)。
例如，DNS查询请求消息根据用户设备注册请求消息生成，具体可以包括：首先，用户设备向无线资源控制网元发送用户设备注册请求消息；然后，无线资源控制网元将用户设备注册请求消息转发给非服务化接口功能网元；最后，非服务化接口功能网元在接收到用户设备注册请求消息的情况下，向域名系统服务网元发送DNS查询请求消息。
步骤S802，非服务化接口功能网元从域名系统服务网元接收标识信息和能力信息。
例如，域名系统服务网元根据DNS查询请求消息查询可用的接入和移动性管理功 能网元，并将查找到的接入和移动性管理功能网元对应的标识信息和能力信息发送给非服务化接口功能网元。
例如，域名系统服务网元将标识信息和能力信息配置在DNS查询应答消息(DNS query response)中，通过DNS查询应答消息将标识信息和能力信息发送给非服务化接口功能网元。
因此，根据本发明实施例的方法，非服务化接口功能网元从域名系统服务网元获取了接入和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
下面结合附图，对第一网元可以从第一网元获取能力信息的2种可能的实现方式做进一步描述。
在一个实施例中，第一网元从第一网元获取能力信息具有第一种实现方式，参见图13，为第一网元从第一网元获取能力信息的第一种实现方式的流程图，其中，第一网元为无线网络管理功能网元，第二网元为网络存储功能网元。具体包括以下步骤：
步骤S901，无线网络管理功能网元向网络存储功能网元发送请求信息。
例如，请求信息为AMF发现服务请求消息(NF service discovery request)。
步骤S902，无线网络管理功能网元从网络存储功能网元接收标识信息。
例如，网络存储功能网元根据AMF发现服务请求消息查询无线接入网可用的接入和移动性管理功能网元，并将查找到的接入和移动性管理功能网元对应的标识信息发送给无线网络管理功能网元。
例如，网络存储功能网元可以将标识信息配置在AMF发现服务应答消息(NF service response)中,通过AMF发现服务应答消息将标识信息和能力信息发送给无线网络管理功能网元。
步骤S903，无线网络管理功能网元根据标识信息从无线网络管理功能网元中获取能力信息。
例如，由于无线网络管理功能网元保存有AMF上下文，因此，无线网络管理功能网元可以根据从网络存储功能网元接收的标识信息，在自身保存的AMF上下文中查找与标识信息对应的能力信息。
因此，根据本发明实施例的方法，无线网络管理功能网元根据从网络存储功能网元接收的标识信息，从自身保存的AMF上下文种获取了接入和移动性管理功能网元的能力信息，从而，无线网络管理功能网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在另一个实施例中，第一网元从第一网元获取能力信息具有第二种实现方式，参见图14，为第一网元从第一网元获取能力信息的第二种实现方式的流程图，其中，第一网元为非服务化接口功能网元，第二网元为域名系统服务网元。具体包括以下步骤：
步骤S1001，非服务化接口功能网元向域名系统服务网元发送请求信息。
例如，请求信息为DNS查询请求消息(DNS query request)。
步骤S1002，非服务化接口功能网元从域名系统服务网元接收标识信息。
例如，域名系统服务网元将标识信息配置在DNS查询应答消息(DNS query response)中,通过DNS查询应答消息将标识信息发送给非服务化接口功能网元。
例如，域名系统服务网元根据DNS查询请求消息查询核心网可用的接入和移动性管理功能网元，并将查找到的接入和移动性管理功能网元对应的标识信息发送给非服务化接口功能网元。
步骤S1003，非服务化接口功能网元根据标识信息从非服务化接口功能网元中获取能力信息。
例如，由于非服务化接口功能网元保存有AMF上下文，因此，非服务化接口功能网元可以根据从网络存储功能网元接收的标识信息，在自身保存的AMF上下文中查找与标识信息对应的能力信息。
因此，根据本发明实施例的方法，非服务化接口功能网元根据从网络存储功能网元接收的标识信息，从自身保存的AMF上下文种获取了接入和移动性管理功能网元的能力信息，从而，非服务化接口功能网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
下面结合附图，对第一网元可以从第三网元获取能力信息的4种可能的实现方式做进一步阐述。
在一个实施例中，第一网元从第三网元获取能力信息具有第一种实现方式，参见图15，为第一网元从第三网元获取能力信息的第一种实现方式的流程图，其中，第一网元为无线网络管理功能网元，第二网元为网络存储功能网元，第三网元为非服务化接口功能网元。具体包括以下步骤：
步骤S1101，无线网络管理功能网元向网络存储功能网元发送请求信息。
例如，请求信息为AMF发现服务请求消息(NF service discovery request)。
步骤S1102，无线网络管理功能网元从网络存储功能网元接收标识信息。
例如，网络存储功能网元根据AMF发现服务请求消息查询核心网可用的接入和移动性管理功能网元，并将查找到的接入和移动性管理功能网元对应的标识信息发送给无线网络管理功能网元。
例如，网络存储功能网元可以将标识信息配置在AMF发现服务应答消息(NF service response)中,通过AMF发现服务应答消息将标识信息和能力信息发送给无线网络管理功能网元。
步骤S1103，无线网络管理功能网元向非服务化接口功能网元发送标识信息。
例如，由于非服务化接口功能网元保存有AMF上下文，因此，非服务化接口功能网元在接收到无线网络管理功能网元发送的标识信息后，首先根据标识信息在AMF上下文中查找到对应的能力信息，然后，将查找到的能力信息发送给无线网络管理功能网元。
步骤S1104，无线网络管理功能网元从非服务化接口功能网元接收能力信息。
因此，根据本发明实施例的方法，无线网络管理功能网元根据从网络存储功能网元接收的标识信息，从非服务化接口功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线网络管理功能网元可根据能力信息选择目标接口功能网元，并通 过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在另一个实施例中，第一网元从第三网元获取能力信息具有第二种实现方式，参见图16，为第一网元从第三网元获取能力信息的第二种实现方式的流程图，其中，第一网元为无线资源控制网元，第二网元为域名系统服务网元，第三网元为非服务化接口功能网元。具体包括以下步骤：
步骤S1201，无线资源控制网元向域名系统服务网元发送请求信息。
例如，请求信息为AMF发现服务请求消息(NF service discovery request)。
步骤S1202，无线资源控制网元从域名系统服务网元接收标识信息。
例如，域名系统服务网元根据AMF发现服务请求消息查询核心网可用的接入和移动性管理功能网元，并将查找到的接入和移动性管理功能网元对应的标识信息发送给无线资源控制网元。
例如，域名系统服务网元可以将标识信息配置在AMF发现服务应答消息(NF service response)中,通过AMF发现服务应答消息将标识信息和能力信息发送给无线资源控制网元。
步骤S1203，无线资源控制网元向非服务化接口功能网元发送标识信息。
例如，非服务化接口功能网元保存有AMF上下文，因此，非服务化接口功能网元在接收到无线资源控制网元发送的标识信息后，首先根据标识信息在AMF上下文中查找到对应的能力信息，然后，将查找到的能力信息发送给无线资源控制网元。
步骤S1204，无线资源控制网元从非服务化接口功能网元接收能力信息。
因此，根据本发明实施例的方法，无线资源控制网元根据从域名系统服务网元接收的标识信息，从非服务化接口功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，第一网元从第三网元获取能力信息具有第三种实现方式，参见图17，为第一网元从第三网元获取能力信息的第三种实现方式的流程图，其中，第一网元为无线资源控制网元，第二网元为域名系统服务网元，第三网元为无线网络管理功能网元。具体包括以下步骤：
步骤S1301，无线资源控制网元向域名系统服务网元发送请求信息。
例如，请求信息为AMF发现服务请求消息(NF service discovery request)。
步骤S1302，无线资源控制网元从域名系统服务网元接收标识信息。
例如，域名系统服务网元根据AMF发现服务请求消息查询核心网可用的接入和移动性管理功能网元，并将查找到的接入和移动性管理功能网元对应的标识信息发送给无线资源控制网元。
进一步地，域名系统服务网元可以将标识信息配置在AMF发现服务应答消息(NF service response)中,通过AMF发现服务应答消息将标识信息和能力信息发送给无线网络管理功能网元。
步骤S1303，无线资源控制网元向无线网络管理功能网元发送标识信息。
例如，无线网络管理功能网元保存有AMF上下文，因此，无线网络管理功能网元在接收到无线资源控制网元发送的标识信息后，首先根据标识信息在AMF上下文中查找到对应的能力信息，然后，将查找到的能力信息发送给无线资源控制网元。
步骤S1304，无线资源控制网元从无线网络管理功能网元接收能力信息。
因此，根据本发明实施例的方法，无线资源控制网元根据从域名系统服务网元接收的标识信息，从无线网络管理功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，第一网元从第三网元获取能力信息具有第四种实现方式，参见图18，为第一网元从第三网元获取能力信息的第四种实现方式的流程图，其中，第一网元为非服务化接口功能网元，第二网元为域名系统服务网元，第三网元为无线网络管理功能网元。具体包括以下步骤：
步骤S1401，非服务化接口功能网元向域名系统服务网元发送请求信息。
例如，请求信息为DNS查询请求消息(DNS query request)。
步骤S1402，非服务化接口功能网元从域名系统服务网元接收标识信息。
例如，域名系统服务网元将标识信息配置在DNS查询应答消息(DNS query response)中,通过DNS查询应答消息将标识信息发送给非服务化接口功能网元。
例如，域名系统服务网元根据DNS查询请求消息查询核心网可用的接入和移动性管理功能网元，并将查找到的接入和移动性管理功能网元对应的标识信息发送给非服务化接口功能网元。
步骤S1403，非服务化接口功能网元向无线网络管理功能网元发送标识信息。
例如，无线网络管理功能网元保存有AMF上下文，因此，无线网络管理功能网元在接收到无线资源控制网元发送的标识信息后，首先根据标识信息在AMF上下文中查找到对应的能力信息，然后，将查找到的能力信息发送给非服务化接口功能网元。
步骤S1404，非服务化接口功能网元从无线网络管理功能网元接收能力信息。
因此，根据本发明实施例的方法，非服务化接口功能网元根据从域名系统服务网元接收的标识信息，从无线网络管理功能网元获取了接入和移动性管理功能网元的能力信息，从而，非服务化接口功能网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在一些实施例中，本发明还提供了第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的方法。参见图19，为第一网元与接入和移动性管理功能网元的一种信令传输方法的流程图，该方法包括以下步骤：
步骤S1501，第一网元通过目标接口功能网元向接入和移动性管理功能网元发送用户设备注册请求消息。
其中，用户设备注册请求消息在用户设备与第一网元建立连接的情况下，由用户设备发送给第一网元，用于用户设备在接入和移动性管理功能网元完成注册。
步骤S1502，第一网元通过目标接口功能网元从接入和移动性管理功能网元接收 用户设备上下文信息。
其中，第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令可以包括4种可能的实现方式：
在第一种可能的方式中，第一网元为无线网络管理功能网元，目标接口功能网元为非服务化接口功能网元。
第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第一种实现方式可以结合图20进一步描述。
在第二种可能的方式中，第一网元为无线资源控制网元，目标接口功能网元为非服务化接口功能网元。
第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第二种实现方式可以结合图21进一步描述。
在第三种可能的方式中，第一网元为无线资源控制网元，目标接口功能网元为无线网络管理功能网元。
第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第三种实现方式可以结合图22进一步描述。
在第四种可能的方式中，第一网元为非服务化接口功能网元，目标接口功能网元为无线网络管理功能网元。
第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第四种实现方式可以结合图23进一步描述。
因此，本发明实施例提供的方法，第一网元通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，由于目标功能网元是第一网元根据接入和移动性管理功能网元的能力信息选择的，因此，能够保证无线接入网和核心网之间正常传输信令。
下面结合附图，对第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的4种可能的实现方式做进一步阐述。
在一个实施例中，第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令具有第一种实现方式，参见图20，为第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第一种实现方式的流程图，其中，第一网元为无线网络管理功能网元，目标接口功能网元为非服务化接口功能网元。具体包括以下步骤：
步骤S1601，无线网络管理功能网元向非服务化接口功能网元发送用户设备注册请求消息。
步骤S1602，非服务化接口功能网元将用户设备注册请求消息转发给核心网的NGAP协议层。
步骤S1603，核心网的NGAP协议层将用户设备注册请求消息转发给接入和移动性管理功能网元。
步骤S1604，接入和移动性管理功能网元根据用户设备注册请求消息请求用户设备上下文信息，并将用户设备上下文信息发送给核心网的NGAP协议层。
步骤S1605，核心网的NGAP协议层将用户设备上下文信息转发给非服务化接口功能网元。
步骤S1606，非服务化接口功能网元将用户设备上下文信息转发给无线网络管理 功能网元。
因此，本发明实施例提供的方法，无线网络管理功能网元通过非服务化接口功能网元与接入和移动性管理功能网元进行信令传输，由于目标功能网元是无线网络管理功能网元根据接入和移动性管理功能网元的能力信息选择的，因此，能够保证无线接入网和核心网之间正常传输信令。
在另一个实施例中，第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令具有第二种实现方式，参见图21，为第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第二种实现方式的流程图，其中，第一网元为无线资源控制网元，目标接口功能网元为非服务化接口功能网元。具体包括以下步骤：
步骤S1701，无线资源控制网元向非服务化接口功能网元发送用户设备注册请求消息。
步骤S1702，非服务化接口功能网元将用户设备注册请求消息转发给核心网的NGAP协议层。
步骤S1703，核心网的NGAP协议层将用户设备注册请求消息转发给接入和移动性管理功能网元。
步骤S1704，接入和移动性管理功能网元根据用户设备注册请求消息请求用户设备上下文信息，并将用户设备上下文信息发送给核心网的NGAP协议层。
步骤S1705，核心网的NGAP协议层将用户设备上下文信息转发给非服务化接口功能网元。
步骤S1706，非服务化接口功能网元将用户设备上下文信息转发给无线资源控制网元。
因此，本发明实施例提供的方法，无线资源控制网元通过非服务化接口功能网元与接入和移动性管理功能网元进行信令传输，由于目标功能网元是无线资源控制网元根据接入和移动性管理功能网元的能力信息选择的，因此，能够保证无线接入网和核心网之间正常传输信令。
在又一个实施例中，第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令具有第三种实现方式，参见图22，为第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第三种实现方式的流程图，其中，第一网元为无线资源控制网元，目标接口功能网元为无线网络管理功能网元。具体包括以下步骤：
步骤S1801，无线资源控制网元向无线网络管理功能网元发送用户设备注册请求消息。
步骤S1802，无线网络管理功能网元将用户设备注册请求消息转发给接入和移动性管理功能网元。
步骤S1803，接入和移动性管理功能网元根据用户设备注册请求消息请求用户设备上下文信息，并将用户设备上下文信息发送给无线网络管理功能网元。
步骤S1804，无线网络管理功能网元将用户设备上下文信息转发给无线资源控制网元。
因此，本发明实施例提供的方法，无线资源控制网元通过无线网络管理功能网元与接入和移动性管理功能网元进行信令传输，由于目标功能网元是无线资源控制网元 根据接入和移动性管理功能网元的能力信息选择的，因此，能够保证无线接入网和核心网之间正常传输信令。
在又一个实施例中，第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令具有第四种实现方式，参见图23，为第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的第四种实现方式的流程图，其中，第一网元为非服务化接口功能网元，目标接口功能网元为无线网络管理功能网元。具体包括以下步骤：
步骤S1901，非服务化接口功能网元向无线网络管理功能网元发送用户设备注册请求消息。
步骤S1902，无线网络管理功能网元将用户设备注册请求消息转发给接入和移动性管理功能网元。
步骤S1903，接入和移动性管理功能网元根据用户设备注册请求消息请求用户设备上下文信息，并将用户设备上下文信息发送给无线网络管理功能网元。
步骤S1904，无线网络管理功能网元将用户设备上下文信息转发给非服务化接口功能网元。
因此，本发明实施例提供的方法，非服务化接口功能网元通过无线网络管理功能网元与接入和移动性管理功能网元进行信令传输，由于目标功能网元是无线资源控制网元根据接入和移动性管理功能网元的能力信息选择的，因此，能够保证无线接入网和核心网之间正常传输信令。
在一些实施例中，本申请还提供了第一网元同时作为目标接口功能网元与接入和移动性管理功能网元传输信令的方法。参见图24，为第一网元与接入和移动性管理功能网元的另一种信令传输方法的流程图，该方法包括以下步骤：
步骤S2001，第一网元向接入和移动性管理功能网元发送用户设备注册请求消息。
步骤S2002,第一网元从接入和移动性管理功能网元接收用户设备上下文信息。
其中，第一网元同时作为目标接口功能网元与接入和移动性管理功能网元传输信令可以包括2种可能的实现方式：
在第一种可能的方式中，第一网元为无线网络管理功能网元。
第一网元同时作为目标接口功能网元与接入和移动性管理功能网元传输信令的第一种实现方式可以结合图25进一步描述。
在第二种可能的方式中，第一网元为非服务化接口功能网元。
第一网元同时作为目标接口功能网元与接入和移动性管理功能网元传输信令的第二种实现方式可以结合图26进一步描述。
因此，本发明实施例提供的方法，第一网元同时作为目标接口功能网元与接入和移动性管理功能网元进行信令传输，能够保证无线接入网和核心网之间正常传输信令。
下面结合附图，对第一网元通过目标接口功能网元与接入和移动性管理功能网元传输信令的2种可能的实现方式做进一步阐述。
在一个实施例中，第一网元与接入和移动性管理功能网元传输信令具有第一种实现方式，参见图25，为第一网元与接入和移动性管理功能网元传输信令的第一种实现方式的流程图，其中，第一网元为无线网络管理功能网元。具体包括以下步骤：
步骤S2101，无线网络管理功能网元向接入和移动性管理功能网元发送用户设备注册请求消息。
步骤S2102，无线网络管理功能网元从接入和移动性管理功能网元接收用户设备上下文信息。
因此，本发明实施例提供的方法，无线网络管理功能网元同时作为目标接口功能网元与接入和移动性管理功能网元进行信令传输，能够保证无线接入网和核心网之间正常传输信令。
在另一个实施例中，第一网元与接入和移动性管理功能网元传输信令具有第二种实现方式，参见图26，为第一网元与接入和移动性管理功能网元传输信令的第二种实现方式的流程图，其中，第一网元为非服务化接口功能网元。具体包括以下步骤：
步骤S2201，非服务化接口功能网元向核心网的NGAP协议层发送用户设备注册请求消息。
步骤S2202，核心网的NGAP协议层将用户设备注册请求消息转发给接入和移动性管理功能网元。
步骤S2203，接入和移动性管理功能网元根据用户设备注册请求消息请求用户设备上下文信息，并将用户设备上下文信息发送给核心网的NGAP协议层。
步骤S2204，核心网的NGAP协议层将用户设备上下文信息转发给非服务化接口功能网元。
因此，本发明实施例提供的方法，非服务化接口功能网元同时作为目标接口功能网元与接入和移动性管理功能网元进行信令传输，能够保证无线接入网和核心网之间正常传输信令。
在一些实施例中，本申请还提供了一种能力信息的上报流程。图27为本申请提供的一种能力信息上报的流程图，具体地，包括以下步骤：
步骤S2301，第四网元获取接入和移动性管理功能网元的标识信息和接入和移动性管理功能网元的能力信息。
其中，第四网元可以为网络存储功能网元或者无线网络管理功能网元或者非服务化接口功能网元。
其中，能力信息包括以下3种情况：
在第一种可能的情况中，能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元与无线接入网传输信令的能力。
在第二种可能的情况中，能力信息用于指示接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力。
在第三种可能的情况中，能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力。
步骤S2302，第四网元保存标识信息和能力信息。
例如，第四网元创建AMF上下文，AMF上下文包括接入和移动性管理功能网元的标识信息和能力信息。
此外，第四网元在保存标识信息和能力信息之后，还可以向接入和移动性管理功 能网元发送响应信息，响应消息用于使接入和移动性管理功能网元确认第四网元已经接收到了标识信息和能力信息。
进一步地，能力信息的上报流程可以包括3种可能的实现方式：
在第一种可能的方式中，第四网元为网络存储功能网元。
能力信息的上报流程的第一种实现方式可结合图28进一步阐述。
在第二种可能的方式中，第四网元为非服务化接口功能网元。
能力信息的上报流程的第二种实现方式可结合图29进一步阐述。
在第三种可能的方式中，第四网元为无线网络管理功能网元。
能力信息的上报流程的第三种实现方式可结合图30进一步阐述。
因此，本发明实施例提供的方法，第四网元预先保存了接入和移动性管理功能网元的能力信息，从而，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从第四网元获取接入和移动性管理功能网元的能力信息，从而根据能力信息选择对应的目标接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
下面结合附图，能力信息的上报流程可以包括3种可能的实现方式做进一步阐述。
在一个实施例中，能力信息的上报流程具有第一种实现方式，参见图28，为能力信息的上报流程第一种实现方式的流程图。其中，第四网元为网络存储功能网元。具体包括以下步骤：
步骤S2401，网络存储功能网元获取接入和移动性管理功能网元标识信息和接入和移动性管理功能网元的能力信息。
例如，当服务化架构的核心网中的接入和移动性管理功能网元启动时，需要向网络存储功能网元发送NF注册请求消息(NF register request)，本申请在NF注册请求消息中配置接入和移动性管理功能网元的标识信息和能力信息，通过网络功能注册请求消息将标识信息和能力信息发送给网络存储功能网元，网络存储功能网元通过接收NF注册请求消息获取标识信息和接入和能力信息。
其中接入和移动性管理功能网元启动，是指接入和移动性管理功能网元通电或初始化等。
步骤S2402，网络存储功能网元保存标识信息和能力信息。
其中，网络存储功能网元保存标识信息和能力信息，还可以向接入和移动性管理功能网元发送NF注册响应消息(NF register response)，用于将网络存储功能网元保存已经保存了标识信息和能力信息的状态告知给接入和移动性管理功能网元。
因此，本发明实施例提供的方法，网络存储功能网元获取接入和移动性管理功能网元标识信息和能力信息，从而，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从网络存储功能网元查询能力信息，从而根据能力信息选择对应的接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在另一个实施例中，能力信息的上报流程具有第二种实现方式，参见图29，为能力信息的上报流程第二种实现方式的流程图。其中，第四网元为非服务化接口功能网元。具体包括以下步骤：
步骤S2501，接入和移动性管理功能网元向核心网的NGAP协议层发送标识信息和能力信息。
例如，接入和移动性管理功能网元启动时，可以向核心网的NGAP协议层发送AMF上线通知消息(AMF onboarding notify)，本申请在AMF上线通知消息中配置接入和移动性管理功能网元的标识信息和能力信息，通过AMF上线通知消息将接入和移动性管理功能网元的标识信息和能力信息发送给核心网的NGAP协议层。
步骤S2502，非服务化接口功能网元向核心网的NGAP协议层发送请求消息。
例如，请求消息为NG接口建立请求消息(NG setup request)，用于非服务化接口功能网元与核心网的NGAP协议层建立通信连接。
步骤S2503，非服务化接口功能网元从核心网的NGAP协议层接收标识信息和能力信息。
例如，核心网的NGAP协议层在接收到NG接口建立请求消息之后，会向非服务化接口功能网元发送NG接口建立响应消息(NG setup response)。本申请在NG接口建立响应消息中配置接入和移动性管理功能网元的标识信息和能力信息，通过NG接口建立响应消息将接入和移动性管理功能网元的标识信息和能力信息发送给核心网的NGAP协议层。
步骤S2504，非服务化接口功能网元保存标识信息和能力信息。
例如，非服务化接口功能网元根据从核心网的NGAP协议层接收的标识信息和能力信息生成AMF上下文，有关AMF上下文的内容参见表1和本申请对步骤S303的具体阐述的内容，此处不再赘述。
因此，本发明实施例提供的方法，非服务化接口功能网元获取接入和移动性管理功能网元标识信息和能力信息，从而，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从非服务化接口功能网元查询能力信息，从而根据能力信息选择对应的接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，能力信息的上报流程具有第三种实现方式，参见图30，为能力信息的上报流程第三种实现方式的流程图。其中，第四网元为无线网络管理功能网元。具体包括以下步骤：
步骤S2601，接入和移动性管理功能网元向核心网的NGAP协议层发送标识信息和能力信息。
例如，接入和移动性管理功能网元启动时，可以向核心网的NGAP协议层发送AMF上线通知消息(AMF onboarding notify)，本申请在AMF上线通知消息中配置接入和移动性管理功能网元的标识信息和能力信息，通过AMF上线通知消息将接入和移动性管理功能网元的标识信息和能力信息发送给核心网的NGAP协议层。
步骤S2602，非服务化接口功能网元向核心网的NGAP协议层发送请求消息。
例如，请求消息为NG接口建立请求消息(NG setup request)，用于非服务化接口功能网元与核心网的NGAP协议层建立通信连接。
步骤S2603，非服务化接口功能网元从核心网的NGAP协议层接收标识信息和能力信息。
例如，核心网的NGAP协议层在接收到NG接口建立请求消息之后，会向非服务化接口功能网元发送NG接口建立响应消息(NG setup response)。本申请在NG接口建立响应消息中配置接入和移动性管理功能网元的标识信息和能力信息，通过NG接口建立响应消息将接入和移动性管理功能网元的标识信息和能力信息发送给核心网的NGAP协议层。
步骤S2604，无线网络管理功能网元从非服务化接口功能网元接收标识信息和能力信息。
例如，非服务化接口功能网元从核心网的NGAP协议层接收标识信息和能力信息之后，向无线网络管理功能网元发送AMF能力上报消息(AMF N2 capability report)，AMF能力上报消息携带标识信息和能力信息。从而，无线网络管理功能网元通过AMF能力上报消息接收标识信息和能力信息。
步骤S2605，无线网络管理功能网元保存标识信息和能力信息。
例如，无线网络管理功能网元根据从非服务化接口功能网元接收的标识信息和能力信息生成AMF上下文，有关AMF上下文的内容参见表1和本申请对步骤S303的具体阐述的内容，此处不再赘述。
另外，无线网络管理功能网元可以在生成AMF上下文后，向非服务化接口功能网元发送AMF能力上报确认消息(AMF N2 capability report ack)，用于将无线网络管理功能网元已经保存了标识信息和能力信息的状态通知给非服务化接口功能网元。
因此，本发明实施例提供的方法，无线网络管理功能网元获取接入和移动性管理功能网元标识信息和能力信息，从而，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从无线网络管理功能网元查询能力信息，从而根据能力信息选择对应的接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
上述本申请提供的实施例中，分别从各个网元本身、以及从各个网元之间交互的角度对本申请实施例提供的信令传输的接口兼容方法的各方案进行了介绍。可以理解的是，各个网元，例如上述无线网络管理功能网元、无线资源控制网元、非服务化接口功能网元、域名系统服务网元和网络存储功能网元为了实现上述功能，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，本申请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申请的范围。
例如，当上述网元通过软件模块来实现相应的功能。一种信令传输的接口兼容装置可包括接收模块2701和处理模块2702，如图31所示。
在一个实施例中，该信令传输的接口兼容装置可用于执行上述图4中第一网元的操作。例如：
接收模块2701用于获取接入和移动性管理功能网元的能力信息，能力信息用于指示接入和移动性管理功能网元具有通过目标接口功能网元与无线接入网传输信令的能 力。处理模块2702用于根据能力信息选择目标接口功能网元，目标接口功能网元用于接入和移动性管理功能网元与无线接入网间信令的传输。
由此，本发明实施例提供的信令传输的接口兼容装置，能够获取接入和移动性管理功能网元的能力信息，并根据能力信息选择对应的目标接口功能网元，从而，可以通过目标接口功能网元与核心网的接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
可选的，能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元与无线接入网传输信令的能力；或者，用于指示接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力；或者，用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力。由此，接口兼容装置可以根据能力信息的指示选择对应的目标接口功能网元，从而保证无线接入网和核心网之间能够正常传输信令。
另外，目标接口功能网元可以是非服务化接口功能网元；或者，可以是无线网络管理功能网元；或者，可以是非服务化接口功能网元或无线网络管理功能网元的任一个。由此，目标接口功能网元可以有多种选择，能够进行灵活部署，保证在各种组网情况下，无线接入网和核心网之间能够正常传输信令
可选的，如图32所示，本发明实施例提供的信令传输的接口兼容装置还包括：发送模块2703，用于向第二网元发送请求信息。接收模块2701具体用于从第二网元接收能力信息。
可选的，发送模块2703用于向第二网元发送请求信息。接收模块2701还用于从第二网元接收移动性管理功能网元的标识信息。处理模块2702还用于根据标识信息从第一网元中获取能力信息。由此，第一网元从第二网元获取了接入和移动性管理功能网元的能力信息，从而，第一网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与核心网的接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
可选的，发送模块2303用于向第二网元发送请求信息。接收模块2701还用于从第二网元接收移动性管理功能网元的标识信息。发送模块2703还用于向第三网元发送标识信息。接收模块2701还用于从第三网元接收能力信息。由此，第一网元从第三网元获取了接入和移动性管理功能网元的能力信息，从而，第一网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
可选的，第三网元为非服务化接口功能网元；或者，第三网元为非服务化接口功能网元或者无线网络管理功能网元；或者，第三网元为无线网络管理功能网元。由此，第三网元拥有多种选择方式，可进行灵活部署，保证在各种组网情况下，无线接入网和核心网之间能够正常传输信令。
可选的，能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元与无线接入网传输信令的能力，处理模块2702，具体用于选择非服务化接口功能网元作为目标接口功能网元；或者，能力信息用于指示接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力，处理模块2702，还用 于选择无线网络管理功能网元作为目标接口功能网元；或者，能力信息用于指示接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力，处理器模块2702，还用于选择非服务化接口功能网元或无线网络管理功能网元作为目标接口功能网元。由此，第一网元可以根据能力信息的指示选择对应的目标接口功能网元，从而保证无线接入网和核心网之间能够正常传输信令。
第二网元为网络存储功能网元；或者，第二网元为域名系统服务网元或者无线网络管理功能网元；或者，第二网元为域名系统服务网元。由此，第二网元拥有多种选择方式，可进行灵活部署，保证在各种组网情况下，无线接入网和核心网之间能够正常传输信令。
可选的，发送模块2703还用于通过目标接口功能网元向接入和移动性管理功能网元发送用户设备注册请求消息。接收模块2701还用于通过目标接口功能网元从接入和移动性管理功能网元接收用户设备上下文信息。由此，第一网元通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，由于目标功能网元是第一网元根据接入和移动性管理功能网元的能力信息选择的，因此，能够保证无线接入网和核心网之间正常传输信令。
可选的，发送模块2703还用于向接入和移动性管理功能网元发送用户设备注册请求消息。接收模块2701还用于从接入和移动性管理功能网元接收用户设备上下文信息。由此，第一网元同时作为目标接口功能网元与接入和移动性管理功能网元进行信令传输，能够保证无线接入网和核心网之间正常传输信令。
此外，该信令传输的接口兼容装置中的接收模块2701、处理模块2702和发送模块2703还可以实现上述方法中第一网元的其他操作或功能，此处不再赘述。
在另一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图9中无线网络管理功能网元的操作。例如：
发送模块2703用于向网络存储功能网元发送请求信息。例如，请求信息为AMF服务发现请求消息(NF service discovery request)，用于网络存储功能网元查询核心网可用的接入和移动性管理功能网元。接收模块2701用于从网络存储功能网元接收标识信息和能力信息。
因此，本发明实施例的装置，无线网络管理功能网元从网络存储功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线网络管理功能网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图10中无线资源控制网元的操作。例如：
发送模块2703用于向域名系统服务网元发送请求信息。例如，请求信息为DNS查询请求消息(DNS query request)，用于域名系统服务网元查询用户设备和可用的接入和移动性管理功能网元。接收模块2701用于从域名系统服务网元接收标识信息和能力信息。
因此，本发明实施例的装置，无线资源控制网元从域名系统服务网元获取了接入 和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图11中无线资源控制网元的操作。例如：
发送模块2703用于向无线网络管理功能网元发送请求信息。例如，请求信息为UE定向请求消息(UE message direction request)，UE定向请求消息携带消息类型(message type)，例如消息类型可以包括：上行非接入层(non-access stratum，NAS)消息，等等。UE定向请求消息根据用户设备向无线资源控制网元发送用户设备注册请求消息生成。接收模块2701用于从无线网络管理功能网元接收标识信息和能力信息。
因此，本发明实施例的装置，无线资源控制网元从无线网络管理功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图12中非服务化接口功能网元的操作。例如：
发送模块2703用于向域名系统服务网元发送请求信息。例如，请求信息为DNS查询请求消息(DNS query request)。接收模块2701用于从域名系统服务网元接收标识信息和能力信息。发送模块2703用于从域名系统服务网元接收标识信息和能力信息。
因此，本发明实施例的装置，非服务化接口功能网元从域名系统服务网元获取了接入和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图13中无线网络管理功能网元的操作。例如：
发送模块2703用于向网络存储功能网元发送请求信息。例如，请求信息为AMF发现服务请求消息(NF service discovery request)。接收模块2701用于从网络存储功能网元接收标识信息。处理模块2702用于根据标识信息从无线网络管理功能网元中获取能力信息。
因此，本发明实施例的装置，无线网络管理功能网元根据从网络存储功能网元接收的标识信息，从自身保存的AMF上下文种获取了接入和移动性管理功能网元的能力信息，从而，无线网络管理功能网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图14中非服务化接口功能网元的操作。例如：
发送模块2703用于向域名系统服务网元发送请求信息。例如，请求信息为DNS 查询请求消息(DNS query request)。接收模块2701用于从域名系统服务网元接收标识信息。处理模块2702用于根据标识信息从非服务化接口功能网元中获取能力信息。
因此，本发明实施例的装置，非服务化接口功能网元根据从网络存储功能网元接收的标识信息，从自身保存的AMF上下文种获取了接入和移动性管理功能网元的能力信息，从而，非服务化接口功能网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图15中无线网络管理功能网元的操作。例如：
发送模块2703用于向网络存储功能网元发送请求信息。例如，请求信息为AMF发现服务请求消息(NF service discovery request)。接收模块2701用于从网络存储功能网元接收标识信息。发送模块2703用于向非服务化接口功能网元发送标识信息。接收模块2701用于从非服务化接口功能网元接收能力信息。
因此，本发明实施例的装置，无线网络管理功能网元根据从网络存储功能网元接收的标识信息，从非服务化接口功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线网络管理功能网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图16中无线资源控制网元的操作。例如：
发送模块2703用于向域名系统服务网元发送请求信息。例如，请求信息为AMF发现服务请求消息(NF service discovery request)。接收模块2701用于从域名系统服务网元接收标识信息。发送模块2703用于向非服务化接口功能网元发送标识信息。接收模块2701用于从非服务化接口功能网元接收能力信息。
因此，本发明实施例的装置，无线资源控制网元根据从域名系统服务网元接收的标识信息，从非服务化接口功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图17中无线资源控制网元的操作。例如：
发送模块2703用于向域名系统服务网元发送请求信息。例如，请求信息为AMF发现服务请求消息(NF service discovery request)。接收模块2701用于从域名系统服务网元接收标识信息。发送模块2703用于向无线网络管理功能网元发送标识信息。接收模块2701用于从无线网络管理功能网元接收能力信息。
因此，本发明实施例的装置，无线资源控制网元根据从域名系统服务网元接收的标识信息，从无线网络管理功能网元获取了接入和移动性管理功能网元的能力信息，从而，无线资源控制网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能 够正常传输信令。
在又一个实施例中，图32所示的信令传输的接口兼容装置具体可用于执行图18中非服务化接口功能网元的操作。例如：
发送模块2703用于向域名系统服务网元发送请求信息。例如，请求信息为DNS查询请求消息(DNS query request)。接收模块2701用于从域名系统服务网元接收标识信息。发送模块2703用于向无线网络管理功能网元发送标识信息。接收模块2701用于从无线网络管理功能网元接收能力信息。
因此，本发明实施例的装置，非服务化接口功能网元根据从域名系统服务网元接收的标识信息，从无线网络管理功能网元获取了接入和移动性管理功能网元的能力信息，从而，非服务化接口功能网元可根据能力信息选择目标接口功能网元，并通过目标接口功能网元与接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在又一个实施例中，图31所示的信令传输的接口兼容装置可用于执行上述图4中第四网元的操作。例如：
接收模块2701用于获取接入和移动性管理功能网元的标识信息和接入和移动性管理功能网元的能力信息。
处理模块2702用于保存标识信息和能力信息。
因此，本发明实施例提供的装置，第四网元预先保存了接入和移动性管理功能网元的能力信息，从而，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从第四网元获取接入和移动性管理功能网元的能力信息，从而根据能力信息选择对应的目标接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
图33示出了上述实施例中所涉及的信令传输的接口兼容装置的另一种可能的结构示意图。该信令传输的接口兼容装置包括收发器2801、处理器2802和存储器2803，如图33所示。存储器2803用于与处理器2802耦合，其保存该信令传输的接口兼容装置必要的计算机程序2804。例如，在一个实施例中，处理器2802被配置为第一网元的其他操作或功能。收发器1104用于实现第一网元与第二/第三网元之间的通信。根据上述装置，第一网元获取接入和移动性管理功能网元的能力信息，并根据能力信息选择对应的目标接口功能网元，从而，第一网元可以通过目标接口功能网元与核心网的接入和移动性管理功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
在另一个实施例中，处理器2802具体被配置为第四网元的其他操作或功能。收发器1104用于实现第网元与非服务化接口功能网元、核心网的NGAP协议层和接入和移动性管理功能网元之间的通信。根据上述装置，第四网元预先保存了接入和移动性管理功能网元的能力信息，从而，在后续的无线接入网与核心网的信令交互过程中，无线接入网侧的功能网元就可以从第四网元获取接入和移动性管理功能网元的能力信息，从而根据能力信息选择对应的目标接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令
如图34所示，本申请实施例还提供了一种计算机可读存储介质2901，所述计算 机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。其中该存储介质2901可以是RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动硬盘、CD-ROM或者任何其它形式的存储介质，从而，使无线接入网侧的功能网元根据能力信息选择对应的目标接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
本申请实施例还提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。从而，使无线接入网侧的功能网元根据能力信息选择对应的目标接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
本申请实施例还提供了一种芯片系统，图35为该芯片系统的结构示意图。该芯片系统包括处理器3001，用于支持上述装置或用户设备实现上述方面中所涉及的功能，例如，生成或处理上述方法中所涉及的信息。在一种可能的设计中，所述芯片系统还包括存储器3002，所述存储器，用于保存信令传输的接口兼容装置必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。从而，使无线接入网侧的功能网元根据能力信息选择对应的目标接口功能网元进行信令传输，保证无线接入网和核心网之间能够正常传输信令。
用于执行本申请上述信令传输的接口兼容装置的控制器/处理器可以是中央处理器(CPU)，通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)，现场可编程门阵列(FPGA)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申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述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，DSP和微处理器的组合等等。
结合本申请公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于无线接入网设备中。当然，处理器和存储介质也可以作为分立组件存在于无线接入网设备中。
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。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述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所述计算机程序指令时，全部或部分地产生按照本发明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、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(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。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本发明的保护范围之内。

Claims (20)

  1. 一种信令传输的接口兼容方法，其特征在于，包括：
    第一网元获取接入和移动性管理功能网元的能力信息，所述能力信息用于指示所述接入和移动性管理功能网元具有通过目标接口功能网元与无线接入网传输信令的能力；
    所述第一网元根据所述能力信息选择目标接口功能网元，所述目标接口功能网元用于所述接入和移动性管理功能网元与所述无线接入网间信令的传输。
  2. 根据权利要求1所述的方法，其特征在于，所述第一网元获取接入和移动性管理功能网元的能力信息，包括：
    所述第一网元向第二网元发送请求信息；
    所述第一网元从所述第二网元接收所述能力信息。
  3. 根据权利要求1所述的方法，其特征在于，所述第一网元获取接入和移动性管理功能网元的能力信息，包括：
    所述第一网元向第二网元发送请求信息；
    所述第一网元从所述第二网元接收所述移动性管理功能网元的标识信息；
    所述第一网元根据所述标识信息从所述第一网元中获取所述能力信息。
  4. 根据权利要求1所述的方法，其特征在于，所述第一网元获取接入和移动性管理功能网元的能力信息，包括：
    所述第一网元向第二网元发送请求信息；
    所述第一网元从所述第二网元接收所述移动性管理功能网元的标识信息；
    所述第一网元向第三网元发送所述标识信息；
    所述第一网元从所述第三网元接收所述能力信息。
  5. 根据权利要求4所述的方法，其特征在于，
    所述第一网元为无线网络管理功能网元，所述第三网元为非服务化接口功能网元；或者，
    所述第一网元为无线资源控制网元，所述第三网元为非服务化接口功能网元或者无线网络管理功能网元；或者，
    所述第一网元为非服务化接口功能网元，所述第三网元为无线网络管理功能网元。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，所述第一网元根据所述能力信息选择目标接口功能网元，包括：
    所述能力信息用于指示所述接入和移动性管理功能网元具有通过非服务化接口功能网元与无线接入网传输信令的能力，所述第一网元选择所述非服务化接口功能网元作为所述目标接口功能网元；或者，
    所述能力信息用于指示所述接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力，所述第一网元选择所述无线网络管理功能网元作为所述目标接口功能网元；或者，
    所述能力信息用于指示所述接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力，所述第一网元选择所述非服务化接口功能网元或无线网络管理功能网元作为所述目标接口功能 网元。
  7. 根据权利要求1至6任一项所述的方法，其特征在于，还包括：
    所述第一网元通过所述目标接口功能网元向所述接入和移动性管理功能网元发送用户设备注册请求消息；
    所述第一网元通过所述目标接口功能网元从所述接入和移动性管理功能网元接收用户设备上下文信息。
  8. 根据权利要求1至6任一项所述的方法，其特征在于，还包括：
    所述第一网元向所述接入和移动性管理功能网元发送用户设备注册请求消息；
    所述第一网元从所述接入和移动性管理功能网元接收用户设备上下文信息。
  9. 根据权利要求2至8任一项所述的方法，其特征在于，
    所述第一网元为无线网络管理功能网元，所述第二网元为网络存储功能网元；或者，
    所述第一网元为无线资源控制网元，所述第二网元为域名系统服务网元或者无线网络管理功能网元；或者，
    所述第一网元为非服务化接口功能网元，所述第二网元为域名系统服务网元。
  10. 一种信令传输的接口兼容装置，其特征在于，包括：
    接收模块，用于获取接入和移动性管理功能网元的能力信息，所述能力信息用于指示所述接入和移动性管理功能网元具有通过目标接口功能网元与无线接入网传输信令的能力；
    处理模块，用于根据所述能力信息选择目标接口功能网元，所述目标接口功能网元用于所述接入和移动性管理功能网元与所述无线接入网间信令的传输。
  11. 根据权利要求10所述的装置，其特征在于，还包括：发送模块；
    所述发送模块，用于向第二网元发送请求信息；
    所述接收模块，用于从所述第二网元接收所述能力信息。
  12. 根据权利要求10所述的装置，其特征在于，
    所述发送模块，用于向第二网元发送请求信息；
    所述接收模块，用于从所述第二网元接收所述移动性管理功能网元的标识信息；
    所述处理模块，用于根据所述标识信息从所述第一网元中获取所述能力信息。
  13. 根据权利要求10所述的装置，其特征在于，
    所述发送模块，用于向第二网元发送请求信息；
    所述接收模块，用于从所述第二网元接收所述移动性管理功能网元的标识信息；
    所述发送模块，还用于向第三网元发送所述标识信息；
    所述接收模块，还用于从所述第三网元接收所述能力信息。
  14. 根据权利要求13所述的装置，其特征在于，
    所述第三网元为非服务化接口功能网元；或者，所述第三网元为非服务化接口功能网元或者无线网络管理功能网元；或者，所述第三网元为无线网络管理功能网元。
  15. 根据权利要求10至14任一项所述的装置，其特征在于，
    所述能力信息用于指示所述接入和移动性管理功能网元具有通过非服务化接口功能网元与无线接入网传输信令的能力，所述处理模块，具体用于选择所述非服务化接 口功能网元作为所述目标接口功能网元；或者，
    所述能力信息用于指示所述接入和移动性管理功能网元具有通过无线网络管理功能网元与无线接入网传输信令的能力，所述处理模块，还用于选择所述无线网络管理功能网元作为所述目标接口功能网元；或者，
    所述能力信息用于指示所述接入和移动性管理功能网元具有通过非服务化接口功能网元或无线网络管理功能网元中至少一个与无线接入网传输信令的能力，所述处理器模块，还用于选择所述非服务化接口功能网元或无线网络管理功能网元作为所述目标接口功能网元。
  16. 根据权利要求10至15任一项所述的装置，其特征在于，
    所述发送模块，还用于通过所述目标接口功能网元向所述接入和移动性管理功能网元发送用户设备注册请求消息；
    所述接收模块，还用于通过所述目标接口功能网元从所述接入和移动性管理功能网元接收用户设备上下文信息。
  17. 根据权利要求10至15任一项所述的装置，其特征在于，
    所述发送模块，还用于向所述接入和移动性管理功能网元发送用户设备注册请求消息；
    所述接收模块，还用于从所述接入和移动性管理功能网元接收用户设备上下文信息。
  18. 根据权利要求11至17任一项所述的装置，其特征在于，
    所述第二网元为网络存储功能网元；或者，所述第二网元为域名系统服务网元或者无线网络管理功能网元；或者，所述第二网元为域名系统服务网元。
  19. 一种信令传输的接口兼容装置，其特征在于，包括：
    收发器，用于获取接入和移动性管理功能网元的能力信息，所述能力信息用于指示所述接入和移动性管理功能网元具有通过目标接口功能网元与无线接入网传输信令的能力；
    处理器，用于根据所述能力信息选择目标接口功能网元，所述目标接口功能网元用于所述接入和移动性管理功能网元与所述无线接入网间信令的传输。
  20. 一种计算机可读存储介质，其特征在于，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-9任意一项所述的方法。
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