WO2020168840A1 - 网络节点选择方法及装置 - Google Patents

网络节点选择方法及装置 Download PDF

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Publication number
WO2020168840A1
WO2020168840A1 PCT/CN2020/070078 CN2020070078W WO2020168840A1 WO 2020168840 A1 WO2020168840 A1 WO 2020168840A1 CN 2020070078 W CN2020070078 W CN 2020070078W WO 2020168840 A1 WO2020168840 A1 WO 2020168840A1
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WO
WIPO (PCT)
Prior art keywords
network element
transmission capability
access network
capability information
access
Prior art date
Application number
PCT/CN2020/070078
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English (en)
French (fr)
Inventor
吴义壮
张万强
倪慧
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20758624.9A priority Critical patent/EP3913975A4/en
Publication of WO2020168840A1 publication Critical patent/WO2020168840A1/zh
Priority to US17/405,208 priority patent/US20210385744A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851Systems using a satellite or space-based relay
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66Policy and charging system
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing 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
    • H04W8/08Mobility data transfer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a method and device for selecting a network node.
  • terminal devices communicate with the core network through access network devices.
  • the core network includes access and mobility management function (AMF) network elements, user plane function (UPF) network elements, or session management function (session management function, SMF) network elements.
  • AMF access and mobility management function
  • UPF user plane function
  • SMF session management function
  • the transmission capability of the access network device and the transmission capability of the UPF network element are not always equal, that is, the transmission capability supported by the access network device is not supported by the UPF network element.
  • satellite communications can be used as a backup transmission method for specific scenarios or as a transmission method for specific services.
  • uplink data transmission the terminal device sends data to the terrestrial access network equipment, and the terrestrial access network equipment sends the data to the satellite, and finally the satellite sends the data to the UPF network element;
  • the data is sent by the UPF network
  • the element is sent to the satellite, and the satellite sends the data to the terrestrial access network equipment, and the terrestrial access network equipment sends the data to the terminal equipment.
  • the UPF network element During the transmission of uplink and downlink user data, the UPF network element is used to forward the data. At this time, both the UPF network element and the access network equipment are required to support satellite communication capabilities. However, among multiple UPF network elements deployed in the same area, only some UPF network elements may support satellite communications. When satellite communication is used as the backhaul link, the SMF network element selects the UPF network element according to the location of the terminal device. If the selected UPF network element does not support satellite communication, data transmission will fail.
  • the embodiment of the application provides a method and device for selecting a network node.
  • the SMF network element obtains the transmission capability of the access network device and selects the UPF network element according to the transmission capability of the access network device. Because the selected UPF network element supports access The transmission capability adopted by the network equipment enables the access network equipment and the UPF network element to successfully transmit data, thereby increasing the success rate of data transmission.
  • the embodiments of the present application provide a method for selecting a network node.
  • the method can be applied to SMF network elements and chips in SMF network elements.
  • the method is described below by taking the application to SMF network elements as an example.
  • the method includes: a session management function SMF network element obtains transmission capability information of an access network device, the transmission capability information includes at least one transmission capability; the SMF network element according to the transmission capability information of the access network device, Select a user plane function UPF network element for a terminal device, and the access network device is an access network device that provides services for the terminal device.
  • the SMF network element obtains the transmission capacity of the access network equipment and selects the UPF network element according to the transmission capacity of the access network equipment. Since the selected UPF network element supports the transmission capacity adopted by the access network equipment, the connection Network access equipment and UPF network elements can successfully transmit data, thereby increasing the success rate of data transmission.
  • the SMF network element acquiring the transmission capability information of the access network device includes: the SMF network element receives the transmission capability of the access network device from the access and mobility management function AMF network element Information; or, the SMF network element receives the transmission capability information of the access network device from the terminal device.
  • the transmission capability information of the access network device received by the SMF network element is obtained by the AMF network element and sent to the SMF network element, or is obtained by the terminal device and sent to the SMF network element to realize the SMF network element The purpose of flexibly obtaining the transmission capability information of the access network equipment.
  • the SMF network element receiving the transmission capability information of the access network device from the access and mobility management function AMF network element includes: the SMF network element receiving the information from the AMF network element A packet data unit PDU session management message, where the PDU session management message carries the transmission capability information of the access network device, and the access network device is an access network device that provides services for the terminal device; or, the The SMF network element receives an N11 message from the AMF network element, where the N11 message carries transmission capability information of the access network device, and the access network device is an access network device that meets a preset condition.
  • the AMF network element sends the transmission capability information of the access network device to the SMF network element through the PDU session management message to meet the UE level or PDU session level scenario; or the AMF network element will access through the N11 message
  • the transmission capability information of the network equipment is sent to the SMF network element to meet the node-level scenario.
  • the SMF network element receiving the transmission capability information of the access network device from the terminal device includes: the SMF network element receiving the non-access stratum NAS message from the terminal device ,
  • the NAS message carries the transmission capability information of the access network device.
  • the SMF network element selects the user plane function UPF network element for the terminal device according to the transmission capability information of the access network device, including: the SMF according to the local policy and the access network device The transmission capability information of, selects the UPF network element for the terminal device.
  • the SMF network element selects the user plane function UPF network element for the terminal device according to the transmission capability information of the access network device, including: the SMF network element sends the policy control function PCF network element The transmission capability information of the access network device, the transmission capability information is used by the PCF network element to determine the target transmission capability; the SMF network element receives the first indication information from the PCF network element, the first The indication information is used to indicate the target transmission capability; the SMF network element selects the UPF network element for the terminal device according to the target transmission capability.
  • the PCF network element determines the target transmission capability and instructs it to the SMF network element, so that the SMF network element selects the UPF network element according to the target transmission capability, so as to meet the scenario of deploying the PCF network element in the system architecture.
  • the SMF network element selects the UPF network element for the terminal device according to the target transmission capability, including: the SMF obtains the transmission capability information of the UPF network element; The transmission capability information of the UPF network element selects a UPF network element that supports the target transmission capability for the terminal device.
  • the SMF network element selects a UPF network element that supports the target transmission capability from multiple UPF network elements.
  • the SMF network element acquiring the transmission capability information of at least one UPF network element includes: the SMF network element sends a subscription request to the network storage function NRF network element, and the subscription request is used to request the The information of the UPF network element, the information of the UPF network element includes the transmission capability information of the UPF network element; the SMF network element receives the information of the UPF network element from the NRF network element.
  • the subscription request carries preset transmission capability information
  • the UPF network element is one of the UPF network elements managed by the SMF network element that supports the transmission capability indicated by the preset transmission capability information UPF network element.
  • the SMF network element can obtain the UPF network element that supports the preset transmission capability.
  • the SMF network element acquiring the transmission capability information of the UPF network element includes: the SMF network element sends an N4 request message to the UPF network element, and receives an N4 response from the UPF network element Message, the N4 response message carries the transmission capability information of the UPF network element; or, the SMF network element receives the N4 request message from the UPF network element, and the N4 request message carries the transmission of the UPF network element Ability information.
  • the method further includes: the SMF network element sends second instruction information to the access network device according to the transmission capability information of the access network device, and the second instruction information is used for To instruct the access network device to send an access control message to the terminal device; or, the SMF network element receives access control policy information from the PCF network element, and sends the access control policy information to the The access network device sends second indication information, where the second indication information is used to instruct the access network device to send an access control message to the terminal device.
  • the SMF network element after the SMF network element receives the transmission capability information of the access network device, it decides the second indication information by itself, or it receives the access control strategy of the PCF network element, and decides the second indication information according to the access control strategy.
  • the second instruction information is sent to the access network device, so that the access device controls the access of the terminal device according to the second instruction information, and achieves the purpose of controlling the access of the terminal device according to the transmission capability of the access network device.
  • the embodiments of the present application provide a method for selecting a network node.
  • the method can be applied to an AMF network element or a chip in an AMF network element.
  • the method will be described below by taking an AMF network element as an example.
  • the method includes: the access and mobility management function AMF network element obtains the transmission capability information of the access network device, the transmission capability information includes at least one transmission capability; the AMF network element sends the information to the session management function SMF network element The transmission capability information.
  • the AMF network element obtains the transmission capability information of the access network device and sends it to the SMF network element, so that the UPF network element is selected according to the transmission capability of the access network device, because the selected UPF network element supports the access network
  • the transmission capability adopted by the device enables the successful transmission of data between the access network device and the UPF network element, thereby increasing the success rate of data transmission.
  • the method further includes: the AMF network element selecting the SMF network element according to the transmission capability information of the access network device.
  • the AMF network element selects a suitable SMF network element, and among the UPF network elements managed by the SMF network element, there is a UPF network element that supports the transmission capability in the transmission capability information.
  • the AMF network element selects the SMF network element according to the transmission capability information of the access network device, including: the AMF network element sends the access to the network storage function NRF network element The transmission capability information of the network device, where the transmission capability information of the access network device is used by the NRF network element to determine at least one target SMF network element; the AMF network element receives the third indication information from the NRF network element, The third indication information is used to indicate the at least one target SMF network element; the AMF network element determines the SMF network element from the at least one target SMF network element.
  • the NRF selects multiple target SMF network elements that support the transmission capability in the transmission capability information, and indicates to the AMF network element through the third indication information, so that the AMF network element determines from the multiple target SMF network elements A SMF network element is created.
  • the AMF network element sending the transmission capability information to the session management function SMF network element includes: the AMF network element sending a PDU session management message to the SMF network element, and the PDU session management The message carries a PDU session establishment request and the transmission capability information of the access network device.
  • the PDU session establishment request is used to request the establishment of a PDU session for a terminal device.
  • the access network device is an interface that provides services for the terminal device. Network access equipment.
  • the AMF network element sends the transmission capability information of the access network device to the SMF network element through the PDU session management message to meet the UE level or PDU session level scenario.
  • the acquisition of the transmission capability information of the access network device by the AMF network element includes: the AMF network element receives the transmission capability information from the access network device; or, the AMF network The element receives the identification of the access network device from the access network device, and obtains the transmission capability information of the access network device according to the identification of the access network device; or, the AMF network element obtains all The transmission layer association information of the access network device, and obtain the transmission capability information of the access network device according to the transmission layer association information; or, the AMF network element obtains the location information of the terminal device, and obtains the location information of the terminal device according to the location The information acquires the transmission capability information of the access network device, and the access network device is an access network device that provides services for the terminal device.
  • AMF network elements can obtain the transmission capability information of the access network equipment from the local or other network elements during the registration process of the terminal equipment or the PDU session establishment process, so as to achieve flexible acquisition of the transmission capability information of the access network equipment. purpose.
  • the acquisition of the transmission capability information of the access network device by the AMF network element includes: when the access network device meets a preset condition, the AMF network element acquires the information about the access network device Transmission capability information.
  • the access network device actively reports transmission capability information, which is mainly applied to node-level scenarios.
  • the embodiments of the present application provide a method for selecting a network node.
  • the method can be applied to a terminal device or a chip in a terminal device.
  • the method is described below by taking the terminal device as an example. It includes: the terminal device receives the transmission capability information of the access network device; the terminal device sends the transmission capability information to the session management function SMF network element.
  • the terminal device obtains the transmission capability information of the access network device and sends it to the SMF network element, so that the UPF network element is selected according to the transmission capability of the access network device, because the selected UPF network element supports the access network device
  • the adopted transmission capability enables successful data transmission between the access network device and the UPF network element, thereby increasing the success rate of data transmission.
  • the terminal device receiving the transmission capability information of the access network device includes: the terminal device receiving the transmission capability information from the access network device or the access and mobility management function AMF network element information.
  • the terminal device can obtain the transmission capability information from the access network device or the AMF network element, achieving the purpose of flexibly obtaining the transmission capability information.
  • the terminal device sending the transmission capability information to the session management function SMF network element includes: the terminal device sending a non-access stratum NAS message to the SMF network element, the NAS message carrying The transmission capability information.
  • an embodiment of the present application provides a method for selecting a network node, including: a policy control function PCF network element receives transmission capability information of an access network device from a session management function SMF network element; the PCF network element is based on the The transmission capability information determines the target transmission capability; the PCF network element sends first indication information to the SMF network element, where the first indication information is used to indicate the target transmission capability.
  • the PCF network element selects the target transmission capacity when the PCF network element is deployed in the system architecture.
  • the method further includes: the PCF network element sends access control policy information to the SMF network element.
  • the SMF network element receives the transmission capability information, it sends it to the PCF network element, and the access control policy information decided by the PCF network element is sent to the access network device, so that the access device is controlled according to the access policy
  • the information controls the access of the terminal equipment to achieve the purpose of controlling the access of the terminal equipment according to the transmission capacity of the access network equipment.
  • an embodiment of the present application provides a network node selection device.
  • the device may be an SMF network element or a chip in the SMF network element.
  • the device may include a processing unit, a sending unit, and a receiving unit.
  • the processing unit may be a processor
  • the sending unit may be a transmitter
  • the receiving unit may be a receiver
  • the SMF network element may also include a storage unit
  • the storage unit may be a memory
  • the storage The unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit, so that the SMF network element implements the above-mentioned first aspect or functions in various possible implementation manners of the first aspect.
  • the processing unit can be a processor, and the transceiving unit can be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to make the
  • the SMF network element implements the functions of the first aspect or various possible implementation manners of the first aspect, and the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or the SMF network element A storage unit (for example, read-only memory, random access memory, etc.) located outside the chip.
  • an embodiment of the present application provides a network node selection device, which may be an AMF network element or a chip in the AMF network element.
  • the device may include a processing unit, a sending unit, and a receiving unit.
  • the processing unit may be a processor
  • the sending unit may be a transmitter
  • the receiving unit may be a receiver
  • the AMF network element may also include a storage unit
  • the storage unit may be a memory
  • the storage The unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit, so that the AMF network element implements the above-mentioned second aspect or functions in various possible implementation manners of the second aspect.
  • the processing unit can be a processor, and the transceiver unit can be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to make the
  • the AMF network element implements the functions of the second aspect or various possible implementations of the second aspect.
  • the storage unit can be a storage unit (for example, a register, a cache, etc.) in the chip, or the AMF network element A storage unit (for example, read-only memory, random access memory, etc.) located outside the chip.
  • an embodiment of the present application provides a network node selection device.
  • the device may be a terminal device or a chip in the terminal device.
  • the device may include a processing unit, a sending unit, and a receiving unit.
  • the processing unit may be a processor, the sending unit may be a transmitter, and the receiving unit may be a receiver;
  • the terminal device may also include a storage unit, and the storage unit may be a memory;
  • the processing unit executes the instructions stored in the storage unit, so that the terminal device realizes the above-mentioned third aspect or functions in various possible implementation manners of the third aspect.
  • the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to make the terminal
  • the device implements the above-mentioned third aspect or functions in various possible implementations of the third aspect.
  • the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or a storage unit located in the terminal device.
  • a storage unit external to the chip for example, read-only memory, random access memory, etc.).
  • an embodiment of the present application provides a paging device.
  • the device may be a PCF network element or a chip in the PCF network element.
  • the device may include a processing unit, a sending unit, and a receiving unit.
  • the processing unit may be a processor
  • the sending unit may be a transmitter
  • the receiving unit may be a receiver
  • the PCF network element may also include a storage unit
  • the storage unit may be a memory
  • the storage The unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit, so that the PCF network element implements the aforementioned fourth aspect or functions in various possible implementation manners of the fourth aspect.
  • the processing unit can be a processor, and the transceiver unit can be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to enable the
  • the PCF network element implements the functions of the fourth aspect or various possible implementation manners of the fourth aspect.
  • the storage unit can be a storage unit (for example, a register, a cache, etc.) in the chip, or the PCF network element A storage unit (for example, read-only memory, random access memory, etc.) located outside the chip.
  • the embodiments of the present application provide a computer program product containing instructions, which, when running on an SMF network element, enables the SMF network element to perform any of the foregoing first aspect or various possible implementation manners of the first aspect method.
  • an embodiment of the present application provides a computer program product containing instructions, which when it runs on an AMF network element, causes the AMF network element to execute the above-mentioned second aspect or various possible implementation manners of the second aspect Methods.
  • an embodiment of the present application provides a computer program product containing instructions, which when run on a terminal device, causes the terminal device to execute the foregoing third aspect or the methods in the various possible implementations of the third aspect .
  • the embodiments of the present application provide a computer program product containing instructions, which when running on a PCF network element, enable the PCF network element to execute the foregoing fourth aspect or various possible implementation manners of the fourth aspect Methods.
  • embodiments of the present application provide a computer-readable storage medium that stores instructions in the computer-readable storage medium, and when it runs on an SMF network element, the SMF network element executes the first aspect or the first aspect described above.
  • SMF network element executes the first aspect or the first aspect described above.
  • an embodiment of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, and when it runs on an AMF network element, the AMF network element executes the second aspect or the first
  • the methods in the various possible implementations of the two aspects are described.
  • an embodiment of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, and when it runs on a terminal device, the terminal device executes the third aspect or the third aspect.
  • an embodiment of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, and when it runs on a PCF network element, the PCF network element executes the fourth aspect or the first Four methods in various possible implementations.
  • the SMF network element obtains the transmission capability information of the access network device, and according to the transmission capability information of the access network device, selects the terminal device to support at least one of the transmission capability information included UPF network element with transmission capability.
  • the SMF network element obtains the transmission capacity of the access network equipment, and selects the UPF network element according to the transmission capacity of the access network equipment. Since the selected UPF network element supports the transmission capacity adopted by the access network equipment, the access The data can be successfully transmitted between the network equipment and the UPF network element, thereby increasing the success rate of data transmission.
  • FIG. 1A is a schematic diagram of a service-based 5G system architecture applicable to an embodiment of this application;
  • FIG. 1B is a schematic diagram of the architecture of a non-roaming 5G system based on reference points to which an embodiment of the application is applicable;
  • FIG. 2 is a flowchart of a method for selecting a network node according to an embodiment of the present application
  • 3A is a schematic diagram of receiving transmission capability information of an SMF network element in a network node selection method provided by an embodiment of the present application;
  • FIG. 3B is a schematic diagram of another SMF network element receiving transmission capability information in the network node selection method provided by an embodiment of the present application;
  • FIG. 4 is a flowchart of another method for selecting a network node provided by an embodiment of the present application.
  • FIG. 5 is a flowchart of another method for selecting a network node according to an embodiment of the present application.
  • FIG. 6 is a flowchart of another method for selecting a network node in an embodiment of the present application.
  • FIG. 7 is a flowchart of another method for selecting a network node according to an embodiment of the present application.
  • FIG. 8A is a flowchart of another method for selecting a network node according to an embodiment of the present application.
  • FIG. 8B is a flowchart of another method for selecting a network node according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a network node selection device provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of another network node selection device provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of yet another network node selection device provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of another network node selection device provided by an embodiment of the application.
  • FIG. 13 is a schematic structural diagram of yet another network node selection device provided by an embodiment of this application.
  • the terminal device accesses the data network through a packet data unit (PDU) session established between the terminal device and the data network (DN).
  • PDU packet data unit
  • DN data network
  • the SMF network element selects the UPF network element to establish the PDU session.
  • the access network device that provides services for the terminal device receives the data from the terminal device, it sends the data to the UPF network element; in the downlink data transmission process, the data sent by the UPF network element arrives as After the terminal device provides the service of the access network device, the access network device sends the data to the terminal device.
  • the UPF network element When the UPF network element is used to send data, if a certain specific transmission capability is required to transmit data between the access network device and the UPF network element, both the access network device and the UPF are required to support this transmission capability.
  • the transmission capability of the access network device and the transmission capability of the UPF network element are not always equal, that is, the transmission capability supported by the access network device is not supported by the UPF network element.
  • satellite communication is used as the backhaul link.
  • the terminal device sends data to the terrestrial access network device
  • the terrestrial access network device sends the data to the satellite.
  • the satellite sends the data to the UPF network element; for downlink data transmission: the data is sent by the UPF network element to the satellite, the satellite sends the data to the terrestrial access network device, and the terrestrial access network device sends the data to the terminal device.
  • both the access network equipment and the UPF network element are required to have the transmission capability of satellite communication.
  • SMF network elements select UPF network elements according to the location of the terminal equipment. If the selected UPF network elements do not support satellites Communication causes data transmission to fail.
  • the embodiments of the present application provide a method and device for selecting network nodes.
  • SMF network elements obtain the transmission capacity of the access network equipment and select the UPF network element according to the transmission capacity of the access network equipment.
  • the element supports the transmission capability adopted by the access network device, so that the data can be successfully transmitted between the access network device and the UPF network element, thereby increasing the success rate of data transmission.
  • words such as “exemplary” or “for example” are used as examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • the communication method provided in the embodiments of this application can be used in the third generation (the 3rd Generation, 3G) mobile communication, the long-term evolution (Long Term Evolution, LTE) system, the fourth generation (the 4th Generation, 4G) mobile communication system, and the advanced long-term Evolution (Long Term Evolution-Advanced, LTE-A) system, 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) related cellular systems, fifth generation (the 5th Generation, 5G) mobile communication system, and subsequent evolution Communication Systems.
  • the access network equipment involved in the embodiments of the present application is equipment that provides access services for terminal equipment, including radio access network (RAN) equipment and access network (AN) equipment.
  • the RAN equipment is mainly a wireless network equipment in the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) network
  • the AN equipment may be an access network equipment defined by non-3GPP.
  • RAN equipment is mainly responsible for functions such as radio resource management, quality of service (QoS) management, data compression, and encryption on the air interface side.
  • the RAN equipment may include various forms of base stations, such as macro base stations, micro base stations (also called small stations), relay stations, and access points. In systems that use different wireless access technologies, the names of devices with base station functions may be different.
  • RAN devices For example, in 5G network architecture, they are called RAN devices or gNB (5G NodeB); Long Term Evolution (Long Term Evolution, In the LTE) network architecture, it is called an evolved NodeB (evolved NodeB, eNB, or eNodeB); in the third generation (3rd generation, 3G) network architecture, it is called a NodeB (NodeB), etc.
  • AN equipment allows terminal equipment and the 3GPP core network to use non-3GPP technologies for interconnection and intercommunication.
  • non-3GPP technologies such as: Wireless Fidelity (Wi-Fi) technology, Worldwide Interoperability for Microwave Access (WiMAX) technology, code division multiple access (CDMA) technology, etc.
  • Wi-Fi Wireless Fidelity
  • WiMAX Worldwide Interoperability for Microwave Access
  • CDMA code division multiple access
  • the terminal equipment involved in the embodiments of this application may be user equipment (UE), handheld terminal, notebook computer, subscriber unit, cellular phone, smart phone, wireless data Card, personal digital assistant (PDA) computer, tablet computer, wireless modem (modem), handheld device (handheld), laptop computer, cordless phone, or wireless local loop (wireless local loop, WLL), machine type communication (MTC) terminal, or other devices that can access the network.
  • UE user equipment
  • PDA personal digital assistant
  • modem modem
  • handheld device handheld
  • laptop computer cordless phone
  • cordless local loop wireless local loop
  • MTC machine type communication
  • the transmission capabilities in the embodiments of this application include the type of transmission network between the access network device and the user plane function network element (also referred to as the nature of the transmission network), and the transmission between the access network device and the user plane function network element Delay, bandwidth or capacity, etc.
  • the transmission capability includes, but is not limited to, optical fiber communication transmission, 5G new radio (NR) technology communication transmission, satellite communication transmission, etc., among which, satellite communication transmission includes low Low earth orbiting (LEO) satellite communication transmission, medium earth (orbitin, MEO) satellite communication transmission, and geosynchronization (geostationary earth orbiting, GEO) satellite communication transmission, etc.
  • LEO Low earth orbiting
  • MEO medium earth
  • GEO geosynchronization
  • the access network device and the UPF network element can use this transmission capability to transmit data. That is, the access network device and the UPF network element perform data transmission through the specific transmission capability.
  • FIG. 1A is a schematic diagram of a service-based 5G system architecture applicable to an embodiment of this application
  • FIG. 1B is a schematic diagram of a reference point-based non-roaming 5G system architecture applicable to an embodiment of this application.
  • the 5G system architecture is divided into an access network part and a core network part.
  • the access network part includes RAN equipment to implement wireless access-related functions;
  • the core network part includes key logical network elements: : AMF network element, UPF network element, SMF network element, policy control function (policy control function, PCF) network element, unified data management (unified data management, UDM) network element, etc.
  • the 5G network also includes application function (AF) network elements, network slice selection function (network slice selection function, NSSF) network elements, authentication server function (authentication server function, AUSF) network elements, and network development function (network slice selection function, NSSF) network elements.
  • AF application function
  • NEF exposure function
  • NEF network storage function
  • AUSF authentication service function
  • N1 to N25 represent messages, such as N11 messages between AMF network elements and SMF network elements.
  • AMF network element Mainly responsible for the mobility management in the mobile network, such as user location update, user registration network, user handover, etc.
  • SMF network element Mainly responsible for session management in the mobile network, such as session establishment, modification, release, etc. It has functions including assigning IP addresses to users and selecting UPF that provides data forwarding functions.
  • UPF network element responsible for forwarding and receiving user data in terminal equipment.
  • User data can be received from the data network and transmitted to the terminal device through the access network device; the UPF network element can also receive user data from the terminal device through the access network device and forward it to the data network.
  • the transmission resources and scheduling functions of UPF network elements that provide services for terminal devices are managed and controlled by SMF network elements.
  • AF network element It mainly supports interaction with the 3GPP core network to provide services, such as influencing data routing decisions, policy control functions or providing third-party services to the network side.
  • UDM network element used to generate authentication credential, user identification processing (such as storage and management of user permanent identities, etc.), access authorization control and contract data management, etc.
  • Data network refers to the service network that provides users with data transmission services, such as IP Multi-media Service (IMS), Internet, etc.
  • IMS IP Multi-media Service
  • FIG. 2 is a flowchart of a method for selecting a network node according to an embodiment of the present application.
  • This embodiment explains in detail the network node selection method described in this application from the perspective of the SMF network element. This embodiment includes:
  • the session management function SMF network element obtains the transmission capability information of the access network device.
  • the SMF network element obtains the transmission capability information of the access network device through the AMF network element and the like.
  • the SMF network element selects a user plane function UPF network element for the terminal device according to the transmission capability information of the access network device, and the access network device is an access network device that provides services for the terminal device.
  • the SMF network element manages multiple UPF network elements, and the SMF network element can obtain the transmission capability of each UPF network element among these UPF network elements.
  • the SMF network element can select a UPF with the transmission capability included in the transmission capability information from multiple UPFs according to the transmission capability included in the transmission capability information of the access network device.
  • the transmission capability information of the access network equipment received by the SMF network element includes a transmission capability to support satellite communication transmission.
  • the SMF network element manages 10 UPF network elements, and the SMF network element selects a UPF network element that supports satellite communication transmission from the 10 UPF network elements.
  • the transmission capability information received by the SMF network element of the access network device includes two transmission capabilities, which are to support LEO satellite communication transmission and GEO communication transmission.
  • the SMF network element determines that the PDU session uses LEO satellite communication transmission according to the local strategy. Yes, the SMF network element selects the UPF network element that supports LEO satellite communication transmission from the 10 UPF network elements under management.
  • the SMF network element obtains the transmission capability information of the access network device, and according to the transmission capability information of the access network device, selects a UPF network element that supports at least one transmission capability included in the transmission capability information for the terminal device.
  • the SMF network element obtains the transmission capacity of the access network equipment, and selects the UPF network element according to the transmission capacity of the access network equipment. Since the selected UPF network element supports the transmission capacity adopted by the access network equipment, the access Network equipment and UPF network elements can successfully transmit data, thereby increasing the success rate of data transmission.
  • FIG. 3A is a schematic diagram of receiving transmission capability information of an SMF network element in a network node selection method provided by an embodiment of the present application. Referring to FIG. 3A, this embodiment includes:
  • the AMF network element obtains transmission capability information of an access network device.
  • an AMF network element when an AMF network element receives a PDU session establishment request from a terminal device, it obtains the transmission capability information of the access network device that provides services for the terminal device, or when the access network device fails, the AMF network element obtains the The transmission capability information of the access network equipment that has failed.
  • the AMF network element sends the transmission capability information to the session management function SMF network element.
  • the SMF network element receives the transmission capability information of the access network equipment from the AMF network element.
  • step 202 how the AMF network element sends transmission capability information to the SMF network element will be described in detail.
  • the AMF network element sends the transmission capability information of the access network device to the SMF network element through the PDU session management message.
  • This design can be understood as a scenario for UE level or PDU session level. In this design, before step 201 in Figure 3A, it also includes:
  • the AMF network element receives a packet data unit PDU session establishment request from a terminal device.
  • the AMF When the AMF receives the PDU session request from the terminal device, it obtains related information of the access network device that provides services for the terminal device, such as the identification of the access network device. At this time, in step 201, the AMF network element obtains the transmission capability information of the access network device according to the PDU session establishment request, and the access network device is the access network device that provides services for the terminal device that initiates the PDU session establishment request; step In 202, the AMF network element sends a PDU session management message to the SMF.
  • the PDU session management message carries the transmission capability information of the access network device and the PDU session establishment request.
  • the transmission capability information of some access network devices can be pre-stored on the AMF network element.
  • the AMF network element receives the PDU session establishment request from the terminal device, it obtains it from the local UE context as the initiator of the PDU session.
  • the AMF determines the access network device according to the PDU session request, sends a request message to the access network device to request transmission capability information, and then receives the transmission capability information from the access network device .
  • the AMF receives the PDU session request, it receives the transmission capability information from the access network device.
  • the AMF network element receives the identifier of the access network device from the access network device, and obtains the transmission capability information of the access network device according to the identifier of the access network device.
  • the AMF network element obtains the transmission layer association information of the access network device, and obtains the transmission capability information of the access network device according to the transmission layer association information.
  • the AMF network element obtains the location information of the terminal device, and obtains the transmission capability information of the access network device according to the location information, and the access network device is an access network device that provides services for the terminal device .
  • the location information may be geographic coordinates or the like.
  • the AMF network element can obtain the transmission capability information of the access network device from the local or other network elements during the registration process of the terminal device or the PDU session establishment process, so as to achieve flexible acquisition of the transmission capability information of the access network device. purpose.
  • the AMF network element obtains the transmission capability information of the access network device.
  • the access network equipment fails, and before the failure, the access network equipment supports satellite transmission and optical fiber transmission.
  • the optical fiber transmission network between the access network and the UPF fails due to earthquakes.
  • the access The network equipment supports satellite transmission; for example, the access network equipment fails.
  • the access network equipment supports optical fiber transmission. Due to earthquakes, the optical fiber transmission network between the access network equipment and the UPF network element fails.
  • the access network equipment is upgraded to support satellite transmission. In these two scenarios, all terminal devices served by the access network device are affected. Therefore, this design can be understood as a node-level scenario.
  • step 201 when the access network device meets the preset conditions, the AMF network element obtains the transmission capability information of the access network device.
  • the transmission capability is that the access network device actively reports to the AMF network element
  • step 202 the AMF network element sends the transmission capability information of the access network device to the SMF network element through the N11 message; correspondingly, the SMF network element receives the N11 from the AMF network element that carries the transmission capability information of the access network device news.
  • the AMF network element may also send the transmission capability information of the access network device to the SMF network element through other messages.
  • the AMF network element sends the transmission capability information of the access network device to the SMF network element through the PDU session management message to meet the UE-level scenario PDU session level scenario; the AMF network element connects to the network through the N11 message The transmission capability information of the device is sent to the SMF network element to meet the node-level scenario.
  • Fig. 3B is a schematic diagram of another SMF network element receiving transmission capability information in a method for selecting a network node provided by an embodiment of the present application. Referring to FIG. 3B, this embodiment includes:
  • a terminal device receives transmission capability information of an access network device.
  • the terminal device may obtain the transmission capability information of the access network device from the access network device during the registration process, or obtain the transmission capability information of the access network device from the AMF network element.
  • the terminal device sends the transmission capability information to the session management function SMF network element.
  • the SMF receives the transmission capability information of the access network device from the terminal device.
  • the terminal device sends the transmission capability information of the access network device to the AMF network element, and the AMF network element transparently transmits it to the SMF network element.
  • the transmission capability information of the access network device received by the SMF network element is obtained by the AMF network element and sent to the SMF network element, or is obtained by the terminal device and sent to the SMF network element, so as to achieve flexible SMF acquisition The purpose of the transmission capability information of the access network equipment.
  • the SMF network element after receiving the transmission capability information of the access network device, the SMF network element also sends second indication information to the access network device to instruct the access network device to send an access control message to the terminal device.
  • the SMF network element sends second indication information to the access network device according to the transmission capability information of the access network device, and the second indication information is used to indicate the access
  • the network device sends an access control message to the terminal device.
  • the SMF network element determines that the service data needs to be transmitted through optical fiber
  • the SMF network element sends the second indication information to the access network device, so that the access network device sends a denial of access to the terminal device
  • the access control message may cause the access network device to activate the access control mechanism, such as allowing only a specific UE to initiate a PDU session or the UE to initiate a PDU session of a specific service.
  • the SMF network element receives access control policy information from the PCF network element, and sends second indication information to the access network device according to the access control policy information, and the first The second indication information is used to instruct the access network device to send an access control message to the terminal device.
  • the SMF network element after the SMF network element receives the transmission capability information of the access network device, it decides the second indication information by itself, or receives the access control strategy of the PCF network element, and decides the second indication information according to the access control strategy.
  • the second instruction information is sent to the access network device, so that the access device controls the access of the terminal device according to the second instruction information, and achieves the purpose of controlling the access of the terminal device according to the transmission capability of the access network device.
  • Fig. 4 is a flowchart of another method for selecting a network node provided by an embodiment of the present application.
  • the transmission capability information of the access network device received by the SMF network element comes from the AMF network element, and this embodiment includes:
  • the terminal device sends a PDU session establishment request to the AMF network element.
  • the AMF network element receives the PDU session establishment request.
  • the PDU session establishment request includes data network name (data network name, DNN), single network slice selection auxiliary information (single network slice selection sssistance information, S-NSSAI), etc.
  • the AMF network element selects the SMF network element.
  • the NRF network element stores SMF network element related information, and the relevant information includes the identifier of the UPF network element managed by the SMF network element, the transmission capability of each UPF, and the like.
  • the AMF network element After the AMF network element receives the transmission capability information of the access network device, it can send the transmission capability information to the network storage function NRF network element to enable the NRF network element to determine at least one SMF network element based on the transmission capability information and send it to the AMF network element Send third indication information; correspondingly, the AMF network element receives the third indication information from the NRF network element, the third indication information is used to indicate the at least one SMF network element, and each SMF network element in the at least one SMF network element The element satisfies the following condition: the SMF network element manages multiple UPF network elements, and the multiple UPF network elements include UPF network elements that support at least one or all of the transmission capability information.
  • each of the SMF network elements indicated by the third indication information satisfies the following conditions: the SMF network element management Among the multiple UPF network elements, at least one UPF network element exists, and the UPF network element supports satellite communication capabilities. After that, the AMF network element selects one SMF network element from the SMF network elements.
  • the AMF network element sends a PDU session creation context request message to the SMF network element, where the PDU session creation context request message carries the PDU session establishment request and transmission capability information.
  • the AMF network element sends a PDU session management message to the SMF network element selected in step 402.
  • the PDU session management message is specifically a PDU session creation context request message.
  • the PDU session creation context request message is Nsmf_PDUSession_CreateSMContextRequest news.
  • the SMF network element and the UDM network element perform a registration or contract information acquisition process, or perform a registration or contract information update process.
  • the SMF network element sends a PDU session creation context response message to the AMF network element.
  • the PDU session creation context response message is the Nsmf_PDUSession_Create SMContext Response message.
  • the SMF network element initiates a PDU session establishment authentication and authorization process.
  • the SMF network element when it needs to perform authentication and authorization, it initiates a PDU session establishment authentication and authorization process.
  • the SMF network element selects the PCF network element.
  • the SMF network element and the selected PCF network element perform a session management (session management, SM) policy association establishment process or a modification process.
  • session management session management, SM
  • the SMF network element provides the transmission capability information of the access network device to the PCF network element, so that the PCF network element can determine which transmission capability PDU session to use. If the PCF determines that the PDU session with the transmission capability supported by the access network device is not allowed to be established, it notifies the SMF network element to refuse to establish the PDU session, and sends a cause value to the terminal device so that the terminal device no longer initiates a PDU session establishment request.
  • the SMF network element selects the UPF network element for the terminal device according to the transmission capability information of the access network device.
  • the SMF network element manages multiple UPF network elements and knows the transmission capabilities of these UPF network elements. If the transmission capability of the access network device is at least two, the SMF network element first selects a transmission capability from these transmission capabilities, which is hereinafter referred to as the target transmission capability or a specific transmission capability; after that, the SMF network element Target transmission capability, select a UPF network element that supports the target transmission capability from multiple UPF network elements.
  • the SMF network element selects the user plane function UPF network element for the terminal device according to the transmission capability information of the access network device, including: the SMF according to the local policy and the access network
  • the transmission capability information of the device selects the UPF network element for the terminal device.
  • the local strategy is, for example, a priority strategy or a DN network demand strategy (for example, supporting the use of LEO satellite transmission).
  • the local strategy instructs the selection of satellite communication capabilities. If the transmission capability information of the access network equipment includes optical fiber communication capabilities and satellite communication capabilities, the SMF network element regards the satellite communication capabilities as the target capabilities, and the finally selected UPF supports the satellite communication capabilities.
  • the target transmission capability is selected through the SMF network element and then the UPF network element is selected according to the target transmission capability, so as to achieve the purpose of selecting the UPF network element for the terminal device in the system architecture where no PCF network element is deployed.
  • the SMF network element selects the user plane function UPF network element for the terminal device according to the transmission capability information of the access network device, including: the SMF network element sends the policy control function PCF network element to the PCF network.
  • the element sends the transmission capability information of the access network device, and the transmission capability information is used by the PCF network element to determine a target transmission capability, and the target transmission capability belongs to at least one transmission capability included in the transmission capability information of the access network device
  • the SMF network element receives first indication information from the PCF network element, where the first indication information is used to indicate the target transmission capability; the SMF network element is the terminal according to the target transmission capability
  • the device selects the UPF network element.
  • a PCF network element is deployed in the system architecture, and the PCF network element selects the target transmission capability from at least one transmission capability included in the transmission capability information and instructs the target transmission capability to the SMF network element.
  • the PCF network element selects the target transmission capability and instructs it to the SMF network element, so that the SMF network element selects the UPF network element according to the target transmission capability, so that the PCF network element deployed in the system architecture selects the UPF network element for the terminal device the goal of.
  • the SMF network element initiates an SM policy association modification process to the PCF network element.
  • the SMF network element sends an N4 session establishment or modification request message to the UPF network element.
  • the SMF network element receives the N4 session establishment or modification response message from the UPF network element.
  • the SMF network element sends an N1N2 message to the AMF network element.
  • the N1N2 message is the Namf_Communication_N1N2MessageTransfer message under the service-oriented architecture
  • the N1N2 message contains N1 SM container and N2 SM information.
  • the N2 SM information includes the indication information selected by the SMF to indicate the target transmission capability, so that the access network device can determine the target transmission capability according to the indication information, and use the target transmission capability for data packet transmission.
  • the AMF network element sends an N2 PDU session request to the access network device.
  • the access network device receives the N2 PDU session request.
  • the N2 PDU session request includes the N2 SM message and the NAS message, and the NAS message includes the N1 SM container. If the N2 SM information in the above step 413 includes indication information used to indicate the target transmission capability, then in this step, the N2 SM information also includes indication information used to indicate the target transmission capability.
  • the access network device and the terminal device execute an air interface resource establishment process.
  • the access network device sends an N2 PDU session response message to the AMF network element.
  • the N2 PDU session response message includes the PDU session identifier (Identity, ID), N2 SM information, and so on.
  • the AMF network element sends a PDU session update update context request message to the SMF network element.
  • the PDU session update context request message is the Nsmf_PDUSession_UpdateSMContext Request message, which contains N2 SM information.
  • the SMF network element sends an N4 session modification request message to the UPF network element.
  • the SMF network element receives the N4 session modification response message from the UPF network element.
  • the SMF network element sends a PDU session update context response message to the AMF network element.
  • the PDU session update context response message is the Nsmf_PDUSession_UpdateSMContext Response message, and the PDU session update request includes N2 SM information.
  • the SMF network element sends a PDU session notification to the AMF network element.
  • the PDU session notification is Nsmf_PDUSession_SMContextStatusNotify.
  • the SMF network element performs address configuration.
  • SMF performs address configuration.
  • the SMF network element and the UDM network element perform de-registration or de-definition procedures.
  • the SMF network element and the UDM network element perform a de-registration or de-definition process.
  • the SMF network element obtains the transmission capability information of the access network device through the AMF network element, and determines the transmission capability corresponding to the PDU session according to the transmission capability information, such as the transmission mode, delay, etc., so that the SMF according to the PDU session corresponds to Transmission capability, select the UPF network element that supports the transmission capability, so that when the access network device supports different transmission capabilities, the SMF selects the appropriate UPF network element for the PDU session.
  • the transmission capability information such as the transmission mode, delay, etc.
  • FIG. 5 is a flowchart of another method for selecting a network node provided by an embodiment of the present application.
  • the transmission capability information of the access network device received by the SMF network element comes from the terminal device. This embodiment includes:
  • the terminal device sends a PDU session establishment request to the AMF network element.
  • the PDU session establishment request also carries the transmission capability information of the access network device, which is provided for the terminal device.
  • the terminal device may obtain transmission capability information from the access network device during the registration process, or obtain the transmission capability information of the access network device from the AMF network element.
  • the AMF network element selects the SMF network element.
  • step 501 For details, refer to the description of step 501 above, which will not be repeated here.
  • the AMF network element sends a PDU session creation context request message to the SMF network element, where the PDU session creation context request message carries a PDU session establishment request, and the PDU session establishment request carries transmission capability information.
  • step 403 the difference between this step and the above step 403 is that in this step, the transmission capability information is carried in the PDU session establishment request, while in step 403, the transmission capability information and the PDU session establishment request are independent.
  • the SMF network element and the UDM network element perform a registration or contract information acquisition process, or perform a registration or contract information update process.
  • the SMF network element sends a PDU session creation context response message to the AMF network element.
  • step 405 For specific description, please refer to the description of step 405 above, which will not be repeated here.
  • the SMF network element initiates a PDU session establishment authentication and authorization process.
  • the SMF network element when it needs to perform authentication and authorization, it initiates a PDU session establishment authentication and authorization process.
  • the SMF network element selects the PCF network element.
  • the SMF network element and the selected PCF network element perform a session management (session management, SM) policy association establishment process or a modification process.
  • session management session management, SM
  • step 408 For details, refer to the description of step 408 above, which will not be repeated here.
  • the SMF network element selects the UPF network element.
  • step 409 For details, refer to the description of step 409 above, which will not be repeated here.
  • the SMF network element initiates an SM policy association modification process to the PCF network element.
  • the SMF network element sends an N4 session establishment or modification request message to the UPF network element.
  • the SMF network element receives the N4 session establishment or modification corresponding message from the UPF network element.
  • the SMF network element sends an N1N2 message to the AMF network element.
  • step 413 For details, refer to the description of step 413 above, which will not be repeated here.
  • the AMF network element sends an N2 PDU session request to the access network device.
  • the access network device and the terminal device execute an air interface resource establishment process.
  • the access network device sends an N2 PDU session response message to the AMF network element.
  • the N2 PDU session response message includes the PDU session identifier (Identity, ID), N2 SM information, and so on.
  • the AMF network element sends a PDU session update request to the SMF network element.
  • step 417 For details, refer to the description of step 417 above, which will not be repeated here.
  • the SMF network element sends an N4 session modification request message to the UPF network element.
  • the SMF network element receives the N4 session modification response message from the UPF network element.
  • the SMF network element sends a PDU session update context response message to the AMF network element.
  • step 420 For details, refer to the above step 420, which will not be repeated here.
  • the SMF network element sends a PDU session notification to the AMF network element.
  • step 421 For details, refer to the description of step 421 above, which is not repeated here.
  • the SMF network element performs address configuration.
  • SMF performs address configuration.
  • the SMF network element and the UDM network element perform de-registration or de-definition procedures.
  • the SMF network element and the UDM network element perform a de-registration or de-definition process.
  • the SMF network element obtains the transmission capability information of the access network device through the terminal device, and determines the transmission capability corresponding to the PDU session according to the transmission capability information, such as transmission mode, delay, etc., so that the SMF transmits according to the PDU session Ability, select the UPF network element that supports the transmission capability, so that when the access network device supports different transmission capabilities, SMF selects the appropriate UPF network element for the PDU session.
  • the transmission capability information such as transmission mode, delay, etc.
  • Fig. 6 is a flowchart of another method for selecting a network node in an embodiment of the present application. This embodiment is applicable to a scenario where the transmission capability of the access network device is updated after the SMF network element determines the UPF network element according to the transmission capability information of the access network device. This embodiment includes:
  • the AMF network element obtains the latest transmission capability information of the access network device.
  • the AMF network element obtains the latest transmission capability information of the access network device according to the node-level configuration process or N2 connection.
  • the AMF network element sends an N11 request message to the SMF network element.
  • the AMF network element sends an N11 request message to all SMF network elements that have established connections with the access network device.
  • the N11 request message contains the latest transmission capability information of the access network device.
  • the N11 request message is a node-level message. .
  • the SMF network element sends an N11 response message to the AMF network element.
  • the SMF network element sends an N7 request message to the PCF network element.
  • the PCF network element receives the N7 request message.
  • the SMF network element selects the PCF network element according to the latest transmission capability information, and sends an N7 request message to the selected PCF network element, and the N7 request message carries the latest transmission capability information of the access network device.
  • the N7 request message is a node level message or a PDU session level message.
  • the PCF network element sends an N7 response message to the SMF network element.
  • the N7 request message in step 604 is a PDU session level message
  • the N7 response message is used to indicate whether the PDU session can use the access network device whose transmission capacity is updated.
  • the PCF network element sends an update policy to all related SMF network elements, so that the SMF network element initiates a PDU session modification process or a PDU session deletion process.
  • the SMF network element initiates a PDU session modification process or a PDU session deletion process.
  • initiating the PDU session modification process means that the SMF selects a new UPF and establishes a PDU session according to the local policy or the policy sent by the SMF network element.
  • the SMF network element determines to delete the PDU session or modify the PDU session according to the latest transmission capability information of the access network device.
  • the SMF network element manages at least one UPF network element, and the SMF network element obtains and stores the transmission capacity of each UPF network element in advance. After that, after the SMF network element receives the transmission capability information of the access network device, it determines the target transmission capability according to the local policy or the PCF network element, and selects one that supports the target transmission capability among at least one UPF network element according to the target transmission capability. UPF network element with target transmission capability. The following describes in detail how the SMF network element obtains the transmission capability of at least one UPF network element in advance.
  • the SMF network element obtains the transmission capability information of at least one UPF network element through the NRF network element.
  • the transmission capability of at least one UPF network element is configured on the NRF network element, and the SMF network element obtains the UPF network element with specific transmission capability through the NRF network element or obtains the transmission capability of the UPF network element through the NRF.
  • the transmission capability of at least one UPF network element is configured on each UPF network element, the UPF network element registers the transmission capability information on the NRF network element, and the SMF network element obtains the UPF network element with specific transmission capability through the NRF network element or Obtain the transmission capacity of UPF network elements through NRF. For example, see Figure 7.
  • FIG. 7 is a flowchart of another method for selecting a network node according to an embodiment of the present application. This embodiment includes:
  • the SMF network element sends a subscription request to an NRF network element, where the subscription request is used to request information of the UPF network element, and the information of the UPF network element includes transmission capability information of the UPF network element.
  • the NRF network element receives the subscription request from the SMF network element.
  • the subscription request carries preset transmission capability information
  • the preset transmission capability information is included in the UPF provision info
  • the UPF provision info also includes the IDs of the UPF network element NDD, S-NSSAI, SMF network element, etc.
  • the NRF network element sends the information of the UPF network element to the SMF network element.
  • the SMF network element receives the information of the UPF network element from the NRF network element, and the information of the UPF network element includes the information of one or more UPF network elements, among which one or more network elements are managed by the SMF network element A UPF network element that supports the transmission capability indicated by the preset transmission capability information among the UPF network elements.
  • the operation, maintenance and management network element deploys a new UPF network element.
  • the network manager deploys a new UPF network element through Operation Administration and Maintenance (OAM) network elements.
  • OAM Operation Administration and Maintenance
  • the operation, maintenance and management network element configures a new UPF network element.
  • the UPF network element is configured with the NRF ID and the transmission capability supported by the UPF network element, where the transmission capability supported by the UPF network element is included in the UPF provision info.
  • the UPF network element registers with the NRF.
  • the OAM network element registers the new UPF network element in the NRF.
  • steps 705 and 706 have an alternative relationship, that is, only one of the steps needs to be executed.
  • the NRF network element sends UPF network element information to the SMF network element, where the UPF network element information includes the transmission capability of the at least one UPF network element.
  • the subscription request also carries preset transmission capability information
  • each of the UPF network elements in the information of the UPF network element supports the preset transmission capability.
  • the SMF network element obtains the transmission capability information of the UPF network element when performing an N4 node-level process with the UPF network element. Exemplarily, see Fig. 8A and Fig. 8B.
  • FIG. 8A is a flowchart of another method for selecting a network node according to an embodiment of the present application, and this embodiment includes:
  • the SMF network element sends an N4 request message to the UPF network element.
  • the UPF network element receives the N4 request message from the SMF network element.
  • the UPF network element sends an N4 response message to the SMF network element, and the N4 request message carries the transmission capability information of the UPF network element.
  • the SMF network element actively obtains the transmission capability information of the UPF network element through the N4 association establishment or update request, so as to achieve the purpose of obtaining at least the transmission capability information of the UPF network element by the SMF network element.
  • FIG. 8B is a flowchart of another method for selecting a network node according to an embodiment of the present application, and this embodiment includes:
  • the UPF network element sends an N4 request message to the SMF network element, where the N4 request message carries the transmission capability information of the UPF network element.
  • the SMF network element receives the N4 request message from the UPF network element.
  • the SMF network element sends an N4 response message to the UPF network element.
  • the UPF network element actively reports the transmission capability information of the UPF network element to the SMF network element through the N4 association establishment or update request, so that the SMF network element obtains at least the transmission capability of the UPF network element.
  • FIG. 9 is a schematic structural diagram of a network node selection device provided by an embodiment of the application.
  • the device for selecting a network node involved in this embodiment may be an SMF network element or a chip applied to the SMF network element.
  • the network node selection device can be used to perform the function of the SMF network element in the above embodiment.
  • the network node selection apparatus 100 may include:
  • the processing unit 11 is configured to obtain transmission capability information of an access network device, and select a user plane function UPF network element for the terminal device according to the transmission capability information of the access network device, and the access network device is for the terminal Access network equipment that provides services.
  • the device further includes: a receiving unit 12, and the processing unit 11 is configured to control the receiving unit 11 to receive information from the access network device of the access and mobility management function AMF network element Transmission capability information; or, for controlling the receiving unit 11 to receive the transmission capability information of the access network device from the terminal device.
  • the receiving unit 12 is configured to receive a packet data unit PDU session management message from the AMF network element, where the PDU session management message carries the transmission capability information of the access network device;
  • the receiving unit 12 is configured to receive an N11 message from the AMF network element, where the N11 message carries the transmission capability information of the access network device.
  • the receiving unit 12 when the transmission capability information of the access network device comes from the terminal device, the receiving unit 12 is configured to receive a non-access stratum NAS message from the terminal device, and the NAS The message carries the transmission capability information of the access network device.
  • the processing unit 11 is configured to select the UPF network element for the terminal device according to a local policy and the transmission capability information of the access network device.
  • the above-mentioned device 100 further includes:
  • the sending unit 13 is configured to send the transmission capability information of the access network device to the policy control function PCF, where the transmission capability information of the access network device is used by the PCF network element to determine the target transmission capability;
  • the receiving unit 12 is further configured to receive first indication information from the PCF network element, where the first indication information is used to indicate the target transmission capability;
  • the processing unit 11 is configured to select the UPF network element for the terminal device according to the target transmission capability.
  • the processing unit 11 is configured to obtain transmission capability information of a UPF network element, and select a UPF that supports the target transmission capability for the terminal device according to the transmission capability information of the UPF network element Network element.
  • the sending unit 13 is configured to send a subscription request to a network storage function NRF network element, and the subscription request is used to request information of the UPF network element, and the information of the UPF network element includes the UPF Transmission capability information of network elements;
  • the receiving unit 12 is further configured to receive information of the UPF network element from the NRF network element.
  • the subscription request carries preset transmission capability information
  • the UPF network element is one of the UPF network elements managed by the SMF network element that supports the transmission capability indicated by the preset transmission capability information UPF network element.
  • the sending unit 13 is configured to send an N4 request message to the UPF network element, and the receiving unit 12 is also configured to receive an N4 response message from the UPF network element, where the N4 response message carries the UPF Transmission capability information of network elements;
  • the receiving unit 12 is configured to receive an N4 request message from the UPF network element, where the N4 request message carries the transmission capability information of the UPF network element.
  • the sending unit 13 is configured to send second indication information to the access network device according to the transmission capability information of the access network device, and the second indication information is used to indicate The access network device sends an access control message to the terminal device;
  • the receiving unit 12 is configured to receive access control policy information from a PCF network element; the sending unit 13 is configured to send second indication information to the access network device according to the access control policy information, so The second indication information is used to instruct the access network device to send an access control message to the terminal device.
  • the network node selection device provided in the embodiment of the present application can execute the actions of the SMF network element in the foregoing embodiment, and its implementation principles and technical effects are similar, and will not be repeated here.
  • Fig. 10 is a schematic structural diagram of another network node selection device provided by an embodiment of the application.
  • the device for selecting a network node involved in this embodiment may be an AMF network element or a chip applied to an AMF network element.
  • the network node selection device can be used to perform the functions of the AMF network element in the foregoing embodiment.
  • the network node selection apparatus 200 may include:
  • the processing unit 21 is configured to obtain transmission capability information of an access network device, where the transmission capability information includes at least one transmission capability;
  • the sending unit 22 is configured to send the transmission capability information to the session management function SMF network element.
  • the processing unit 21 is further configured to select the SMF network element according to the transmission capability information of the access network device.
  • the device 200 further includes: a receiving unit 23,
  • the sending unit 22 is configured to send transmission capability information of the access network device to a network storage function NRF network element, and the transmission capability information of the access network device is used by the NRF network element to determine at least one target SMF network yuan;
  • the receiving unit 23 is configured to receive third indication information from the NRF network element, where the third indication information is used to indicate the at least one target SMF network element;
  • the processing unit 21 is configured to determine the SMF network element from the at least one target SMF network element.
  • the sending unit 22 is configured to send a PDU session management message to the SMF network element, and the PDU session management message carries a PDU session establishment request and transmission capability information of the access network device,
  • the PDU session establishment request is used to request the establishment of a PDU session for a terminal device, and the access network device is an access network device that provides services for the terminal device.
  • the receiving unit 23 is configured to receive the transmission capability information from the access network device; or,
  • the receiving unit 23 is configured to receive the identifier of the access network device from the access network device, and the processing unit 21 is configured to obtain the access network device according to the identifier of the access network device Transmission capability information; or,
  • the processing unit 21 is configured to obtain the transmission layer association information of the access network device, and obtain the transmission capability information of the access network device according to the transmission layer association information; or,
  • the processing unit 21 is configured to obtain location information of a terminal device, and obtain transmission capability information of the access network device according to the location information, and the access network device is an access device that provides services for the terminal device. ⁇ Net equipment.
  • the processing unit 21 obtains the transmission capability information of the access network device when the access network device meets a preset condition.
  • the network node selection device provided by the embodiment of the present application can perform the actions of the AMF network element in the foregoing embodiment, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 11 is a schematic structural diagram of yet another network node selection device provided by an embodiment of this application.
  • the device for selecting a network node involved in this embodiment may be a terminal device or a chip applied to the terminal device.
  • the network node selection apparatus can be used to perform the functions of the terminal equipment in the above-mentioned embodiments. As shown in FIG. 11, the network node selection apparatus 300 may include:
  • the receiving unit 31 is configured to receive transmission capability information of the access network equipment
  • the sending unit 32 is configured to send the transmission capability information to the session management function SMF network element.
  • the receiving unit 31 is configured to receive the transmission capability information from the access network device or the access and mobility management function AMF network element.
  • the sending unit 32 is configured to send a non-access stratum NAS message to the SMF network element, and the NAS message carries the transmission capability information.
  • the network node selection apparatus provided in the embodiment of the present application can execute the actions of the terminal device in the foregoing embodiment, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 12 is a schematic structural diagram of another network node selection device provided by an embodiment of this application.
  • the device for selecting a network node involved in this embodiment may be a PCF network element or a chip applied to the PCF network element.
  • the network node selection device can be used to perform the functions of the PCF network element in the foregoing embodiment.
  • the network node selection device 400 may include:
  • the receiving unit 41 is configured to receive the transmission capability information of the access network equipment from the SMF network element of the session management function;
  • the processing unit 42 is configured to determine the target transmission capability according to the transmission capability information
  • the sending unit 43 is configured to send first indication information to the SMF network element, where the first indication information is used to indicate the target transmission capability.
  • the sending unit 43 is further configured to send access control policy information to the SMF network element after sending the first indication information to the SMF network element.
  • the network node selection device provided by the embodiment of the present application can perform the actions of the PCF network element in the above-mentioned embodiment, and its implementation principles and technical effects are similar, and will not be repeated here.
  • the processing unit can be implemented in the form of software calling through processing elements; it can also be implemented in the form of hardware.
  • the processing unit may be a separate processing element, or it may be integrated in a chip of the above-mentioned device for implementation.
  • it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device Call and execute the functions of the above processing unit.
  • all or part of these units can be integrated together, or can be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above method or each of the above units can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.
  • the above units may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (FPGA), etc.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • FPGA field programmable gate arrays
  • the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program codes.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 13 is a schematic structural diagram of yet another network node selection device provided by an embodiment of this application.
  • the network node selection device 500 may include: a processor 51 (for example, a CPU), a memory 52, a receiver 53, and a transmitter 54; the receiver 53 and the transmitter 54 are both coupled to the processor 51, and the processor 51 controls the receiving action of the receiver 53, the processor 51 controls the sending action of the transmitter 54; the memory 52 may include high-speed random-access memory (random-access memory, RAM), or may also include non-volatile memory (non-volatile memory). Volatile memory (NVM), such as at least one disk memory, and various instructions can be stored in the memory 52 for completing various processing functions and implementing the method steps of the present application.
  • a processor 51 for example, a CPU
  • RAM random-access memory
  • NVM non-volatile memory
  • the network node selection device involved in this application may further include: a communication bus 55.
  • the receiver 53 and the transmitter 54 may be integrated in the transceiver of the network node selection device, or may be independent transceiver antennas on the network node selection device.
  • the communication bus 55 is used to implement communication connections between components.
  • the aforementioned memory 52 is used to store computer executable program code, and the program code includes instructions; when the processor 51 executes the instructions, the processor 51 of the network node selection device executes the SMF network element in the aforementioned method embodiment.
  • the memory 52 is used to store computer executable program code, the program code includes instructions; when the processor 51 executes the instructions, the processor 51 of the network node selection device executes the processing actions of the AMF network element in the foregoing method embodiment, so that the receiver 53 executes the receiving action of the AMF network element in the foregoing embodiment, and causes the transmitter 54 to execute the sending action of the AMF network element in the foregoing method embodiment.
  • the implementation principles and technical effects are similar, and will not be repeated here. or,
  • the above-mentioned memory 52 is used to store computer executable program code, the program code includes instructions; when the processor 51 executes the instructions, the processor 51 of the network node selection device executes the processing actions of the terminal device in the above method embodiment, so that the receiver 53 The receiving action of the terminal device in the foregoing embodiment is executed, so that the transmitter 54 executes the sending action of the terminal device in the foregoing method embodiment.
  • the implementation principles and technical effects are similar, and will not be repeated here. or,
  • the above-mentioned memory 52 is used to store computer executable program code, the program code includes instructions; when the processor 51 executes the instructions, the processor 51 of the network node selection device executes the processing actions of the PCF network element in the above method embodiment, so that the receiver 53 executes the receiving action of the PCF network element in the foregoing embodiment, and causes the transmitter 54 to execute the sending action of the PCF network element in the foregoing method embodiment.
  • the implementation principles and technical effects are similar and will not be repeated here.
  • An embodiment of the present application further provides a storage medium, and the storage medium stores computer-executable instructions, and the computer-executable instructions are used to implement the network node selection method described above when executed by a processor.
  • the embodiment of the present invention also provides a computer program product, when the computer program product runs on the SMF network element, the SMF network element is caused to execute the network node selection method as described above; or, when the computer program product is on the AMF network When running on the device, the AMF network element is caused to execute the above-mentioned network node selection method; or, when the computer program product is running on the terminal device, the terminal device is caused to execute the above-mentioned network node selection method; or, when said When the computer program product runs on the PCF network element, the PCF network element is caused to execute the above-mentioned network node selection method.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part.
  • the computer can be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • Computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • computer instructions can be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center.
  • a 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 or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the term "plurality” herein refers to two or more.
  • the term “and/or” in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
  • the manner described herein "at least one of" means one of the listed items or any combination thereof, for example, "at least one of A, B, and C” can mean: A alone exists, alone There are B, C alone, A and B, B and C, A and C, and A, B, and C.
  • the character “/" in this article generally indicates that the associated objects before and after are in an "or” relationship; in the formula, the character "/" indicates that the associated objects before and after are in a "division" relationship.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not be implemented in this application.
  • the implementation process of the example constitutes any limitation.

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Abstract

一种网络节点选择方法及装置,SMF网元获取接入网设备的传输能力信息,根据接入网设备的传输能力信息,为终端设备选择支持该传输能力信息包含的至少一种传输能力的UPF网元。该过程中,SMF网元通过获取接入网设备的传输能力,根据接入网设备的传输能力选择UPF网元,由于选择出的UPF网元支持接入网设备采用的传输能力,使得接入网设备与UPF网元之间能够成功传输数据,从而提高数据传输成功率。

Description

网络节点选择方法及装置
本申请要求于2019年02月19日提交中国专利局、申请号为2019101232954、申请名称为《网络节点选择方法及装置》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
本申请实施例涉及通信技术领域,尤其涉及一种网络节点选择方法及装置。
背景技术
第五代(the 5th Generation,5G)网络架构中,终端设备通过接入网设备与核心网通信。核心网包括接入和移动管理功能(access and mobility management function,AMF)网元、用户面功能(user plane function,UPF)网元或会话管理功能(session management function,SMF)网元等。
然而,接入网设备的传输能力与UPF网元的传输能力并不是总是对等的,即接入网设备支持的传输能力,UPF网元并不支持。例如,基于卫星通信的5G网络架构中,卫星通信可以作为特定场景的备用传输方式,或者特定业务的传输方式。对于上行数据传输:终端设备发送数据给陆地接入网设备,再由陆地接入网设备将该数据发送给卫星,最后由卫星将该数据发送UPF网元;对于下行数据传输:数据由UPF网元发送给卫星,卫星将数据发送给陆地接入网设备,由陆地接入网设备将数据发送给终端设备。在上下行用户数据的传输过程中,则采用UPF网元转发该数据,此时,需要UPF网元和接入网设备均支持卫星通信能力。然而,部署在同一个区域内的多个UPF网元中,可能只有部分UPF网元支持卫星通信。采用卫星通信作为回传链路时,SMF网元根据终端设备的位置选择UPF网元,若选择出的UPF网元不支持卫星通信,则导致数据传输失败。
因此,当使用某种特定的传输能力传输数据时,如何选择出支持该特定传输能力的UPF网元,实为业界急待解决的问题。
发明内容
本申请实施例提供一种网络节点选择方法及装置,SMF网元通过获取接入网设备的传输能力,根据接入网设备的传输能力选择UPF网元,由于选择出的UPF网元支持接入网设备采用的传输能力,使得接入网设备与UPF网元能够成功传输数据,从而提高数据传输成功率。
第一方面,本申请实施例提供一种网络节点选择方法,该方法可以应用于SMF网元、也可以应用于SMF网元中的芯片,下面以应用于SMF网元为例对该方法进行描述,该方法包括:会话管理功能SMF网元获取接入网设备的传输能力信息,所述 传输能力信息包含至少一种传输能力;所述SMF网元根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,所述接入网设备是为所述终端设备提供服务的接入网设备。采用这种方案,SMF网元通过获取接入网设备的传输能力,根据接入网设备的传输能力选择UPF网元,由于选择出的UPF网元支持接入网设备采用的传输能力,使得接入网设备与UPF网元能够成功传输数据,从而提高数据传输成功率。
一种可行的设计中,所述SMF网元获取接入网设备的传输能力信息,包括:所述SMF网元接收来自接入和移动管理功能AMF网元的所述接入网设备的传输能力信息;或者,所述SMF网元接收来自所述终端设备的所述接入网设备的传输能力信息。采用这种方案,SMF网元接收到的接入网设备的传输能力信息是AMF网元获取并发送给SMF网元的,或者,是终端设备获取并发送给SMF网元的,实现SMF网元灵活获取接入网设备的传输能力信息的目的。
一种可行的设计中,所述SMF网元接收来自接入和移动管理功能AMF网元的所述接入网设备的传输能力信息,包括:所述SMF网元接收来自所述AMF网元的分组数据单元PDU会话管理消息,所述PDU会话管理消息携带所述接入网设备的传输能力信息,所述接入网设备是为所述终端设备提供服务的接入网设备;或者,所述SMF网元接收来自所述AMF网元的N11消息,所述N11消息携带所述接入网设备的传输能力信息,所述接入网设备是满足预设条件的接入网设备。采用这种方案,AMF网元通过PDU会话管理消息将接入网设备的传输能力信息发送给SMF网元,以满足UE级别或PDU会话级别的场景;或者,AMF网元通过N11消息将接入网设备的传输能力信息发送给SMF网元,以满足节点级别的场景。
一种可行的设计中,所述SMF网元接收来自所述终端设备的所述接入网设备的传输能力信息,包括:所述SMF网元接收来自所述终端设备的非接入层NAS消息,所述NAS消息携带所述接入网设备的传输能力信息。采用这种方案,实现SMF网元从终端设备获取接入网设备的传输能力信息的目的。
一种可行的设计中,所述SMF网元根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,包括:所述SMF根据本地策略和所述接入网设备的传输能力信息,为所述终端设备选择所述UPF网元。采用这种方案,实现SMF根据自身策略选择出UPF网元的目的,以满足系统架构中没有部署PCF网元的场景。
一种可行的设计中,所述SMF网元根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,包括:所述SMF网元向策略控制功能PCF网元发送所述接入网设备的传输能力信息,所述传输能力信息用于所述PCF网元确定目标传输能力;所述SMF网元接收来自所述PCF网元的第一指示信息,所述第一指示信息用于指示所述目标传输能力;所述SMF网元根据所述目标传输能力,为所述终端设备选择所述UPF网元。采用这种方案,由PCF网元确定出目标传输能力并指示给SMF网元,使得SMF网元根据目标传输能力选择出UPF网元,以满足系统架构中部署PCF网元的场景。
一种可行的设计中,所述SMF网元根据所述目标传输能力,为所述终端设备选择UPF网元,包括:所述SMF获取UPF网元的传输能力信息;所述SMF网元根据 所述UPF网元的传输能力信息,为所述终端设备选择一个支持所述目标传输能力的UPF网元。采用这种方案,实现SMF网元从多个UPF网元中选择出一个支持目标传输能力的UPF网元的目的。
一种可行的设计中,所述SMF网元获取至少一个UPF网元的传输能力信息,包括:所述SMF网元向网络存储功能NRF网元发送订阅请求,所述订阅请求用于请求所述UPF网元的信息,所述UPF网元的信息包含所述UPF网元的传输能力信息;所述SMF网元接收来自所述NRF网元的所述UPF网元的信息。采用这种方案,实现SMF网元通过NRF获取UPF网元的传输能力信息的目的。
一种可行的设计中,所述订阅请求携带预设传输能力信息,所述UPF网元为所述SMF网元所管理的UPF网元中支持所述预设传输能力信息所指示的传输能力的UPF网元。采用这种方案,实现SMF网元获取到支持预设传输能力的UPF网元的目的。
一种可行的设计中,所述SMF网元获取UPF网元的传输能力信息,包括:所述SMF网元向所述UPF网元发送N4请求消息,并接收来自所述UPF网元的N4响应消息,所述N4响应消息携带所述UPF网元的传输能力信息;或者,所述SMF网元接收来自所述UPF网元的N4请求消息,所述N4请求消息携带所述UPF网元的传输能力信息。采用这种方案,实现SMF网元通过与UPF网元之间进行N4节点级别流程获取UPF网元的传输能力信息的目的。
一种可行的设计中,所述方法还包括:所述SMF网元根据所述接入网设备的传输能力信息,向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控制消息;或者,所述SMF网元接收来自PCF网元的接入控制策略信息,并根据所述接入控制策略信息向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控制消息。采用这种方案,SMF网元接收到接入网设备的传输能力信息后,自己决策出第二指示信息,或者,接收到PCF网元的接入控制策略,根据该接入控制策略决策出第二指示信息并向接入网设备发送,使得接入设备根据第二指示信息控制终端设备接入,实现根据接入网设备的传输能力控制终端设备接入的目的。
第二方面,本申请实施例提供一种网络节点选择方法,该方法可以应用于AMF网元、也可以应用于AMF网元中的芯片,下面以应用于AMF网元为例对该方法进行描述,该方法包括:接入和移动管理功能AMF网元获取接入网设备的传输能力信息,所述传输能力信息包含至少一种传输能力;所述AMF网元向会话管理功能SMF网元发送所述传输能力信息。采用该种方案,由AMF网元获取接入网设备的传输能力信息并发送给SMF网元,使得根据接入网设备的传输能力选择UPF网元,由于选择出的UPF网元支持接入网设备采用的传输能力,使得接入网设备与UPF网元之间的能够成功传输数据,从而提高数据传输成功率。
一种可行的设计中,所述方法还包含:所述AMF网元根据所述接入网设备的传输能力信息,选择所述SMF网元。采用该种方案,AMF网元选择出合适的SMF网元,该SMF网元管理的UPF网元中存在支持传输能力信息中的传输能力的UPF网元。
一种可行的设计中,所述AMF网元根据所述接入网设备的传输能力信息,选择所述SMF网元,包括:所述AMF网元向网络存储功能NRF网元发送所述接入网设备的传输能力信息,所述接入网设备的传输能力信息用于所述NRF网元确定至少一个目标SMF网元;所述AMF网元接收来自所述NRF网元的第三指示信息,所述第三指示信息用于指示所述至少一个目标SMF网元;所述AMF网元从所述至少一个目标SMF网元中确定所述SMF网元。采用这种方案,由NRF选择出支持传输能力信息中的传输能力的多个目标SMF网元,并通过第三指示信息指示给AMF网元,使得AMF网元从多个目标SMF网元中确定出一个SMF网元。
一种可行的设计中,所述AMF网元向会话管理功能SMF网元发送所述传输能力信息,包括:所述AMF网元向所述SMF网元发送PDU会话管理消息,所述PDU会话管理消息携带PDU会话建立请求和所述接入网设备的传输能力信息,所述PDU会话建立请求用于请求为终端设备建立PDU会话,所述接入网设备是为所述终端设备提供服务的接入网设备。采用这种方案,AMF网元通过PDU会话管理消息将接入网设备的传输能力信息发送给SMF网元,以满足UE级别或PDU会话级别的场景。
一种可行的设计中,所述AMF网元获取接入网设备的传输能力信息,包括:所述AMF网元接收来自所述接入网设备的所述传输能力信息;或者,所述AMF网元接收来自所述接入网设备的所述接入网设备的标识,并根据所述接入网设备的标识获取所述接入网设备的传输能力信息;或者,所述AMF网元获取所述接入网设备的传输层关联信息,并根据所述传输层关联信息获取所述接入网设备的传输能力信息;或者,所述AMF网元获取终端设备的位置信息,并根据所述位置信息获取所述接入网设备的传输能力信息,所述接入网设备是为所述终端设备提供服务的接入网设备。采用这种方案,AMF网元可以在终端设备的注册过程或PDU会话建立过程,从本地或其他网元获取到接入网设备的传输能力信息,实现灵活获取接入网设备的传输能力信息的目的。
一种可行的设计中,所述AMF网元获取接入网设备的传输能力信息,包括:当所述接入网设备满足预设条件时,所述AMF网元获取所述接入网设备的传输能力信息。采用这种方案,由接入网设备主动上报传输能力信息,主要应用于节点级别的场景。
第三方面,本申请实施例提供一种网络节点选择方法,该方法可以应用于终端设备、也可以应用于终端设备中的芯片,下面以应用于终端设备为例对该方法进行描述,该方法包括:包括:终端设备接收接入网设备的传输能力信息;所述终端设备向会话管理功能SMF网元发送所述传输能力信息。采用这种方案,由终端设备获取接入网设备的传输能力信息并发送给SMF网元,使得根据接入网设备的传输能力选择UPF网元,由于选择出的UPF网元支持接入网设备采用的传输能力,使得接入网设备与UPF网元之间的能够成功传输数据,从而提高数据传输成功率。
一种可行的设计中,所述终端设备接收接入网设备的传输能力信息,包括:所述终端设备接收来自所述接入网设备或者接入和移动管理功能AMF网元的所述传输能力信息。采用这种方案,终端设备可以从接入网设备或AMF网元获取传输能力信息,实现灵活获取传输能力信息的目的。
一种可行的设计中,所述终端设备向会话管理功能SMF网元发送所述传输能力信息,包括:所述终端设备向所述SMF网元发送非接入层NAS消息,所述NAS消息携带所述传输能力信息。采用这种方案,实现终端设备将接入网设备的传输能力信息发送给SMF网元的目的。
第四方面,本申请实施例提供一种网络节点选择方法,包括:策略控制功能PCF网元接收来自会话管理功能SMF网元的接入网设备的传输能力信息;所述PCF网元根据所述传输能力信息确定目标传输能力;所述PCF网元向所述SMF网元发送第一指示信息,所述第一指示信息用于指示所述目标传输能力。采用这种方案,实现系统架构中部署PCF网元时,由PCF网元选择目标传输能力的目的。
一种可行的设计中,所述PCF网元向所述SMF网元发送第一指示信息之后,还包括:所述PCF网元向所述SMF网元发送接入控制策略信息。采用这种方案,SMF网元接收到传输能力信息后,发送给PCF网元,由PCF网元决策出的接入控制策略信息并向接入网设备发送,使得接入设备根据接入策略控制信息控制终端设备接入,实现根据接入网设备的传输能力控制终端设备接入的目的。
第五方面,本申请实施例提供一种网络节点选择装置,该装置可以是SMF网元,也可以是SMF网元内的芯片。该装置可以包括处理单元、发送单元和接收单元。当该装置是SMF网元时,该处理单元可以是处理器,发送单元可以是发送器,接收单元可以是接收器;该SMF网元还可以包括存储单元,该存储单元可以是存储器;该存储单元用于存储指令,该处理单元执行该存储单元所存储的指令,以使该SMF网元实现上述第一方面或第一方面的各种可能的实现方式中的功能。当该装置是SMF网元内的芯片时,该处理单元可以是处理器,该收发单元可以是输入/输出接口、管脚或电路等;该处理单元执行存储单元所存储的指令,以使该SMF网元实现上述第一方面或第一方面的各种可能的实现方式中的功能,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是该SMF网元内的位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
第六方面,本申请实施例提供一种网络节点选择装置,该装置可以是AMF网元,也可以是AMF网元内的芯片。该装置可以包括处理单元、发送单元和接收单元。当该装置是AMF网元时,该处理单元可以是处理器,发送单元可以是发送器,接收单元可以是接收器;该AMF网元还可以包括存储单元,该存储单元可以是存储器;该存储单元用于存储指令,该处理单元执行该存储单元所存储的指令,以使该AMF网元实现上述第二方面或第二方面的各种可能的实现方式中的功能。当该装置是AMF网元内的芯片时,该处理单元可以是处理器,该收发单元可以是输入/输出接口、管脚或电路等;该处理单元执行存储单元所存储的指令,以使该AMF网元实现上述第二方面或第二方面的各种可能的实现方式中的功能,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是该AMF网元内的位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
第七方面,本申请实施例提供一种网络节点选择装置,该装置可以是终端设备,也可以是终端设备内的芯片。该装置可以包括处理单元、发送单元和接收单元。当该装置是终端设备时,该处理单元可以是处理器,发送单元可以是发送器,接收单元可以是接收器;该终端设备还可以包括存储单元,该存储单元可以是存储器;该存储单元用于存储指令, 该处理单元执行该存储单元所存储的指令,以使该终端设备实现上述第三方面或第三方面的各种可能的实现方式中的功能。当该装置是终端设备内的芯片时,该处理单元可以是处理器,该收发单元可以是输入/输出接口、管脚或电路等;该处理单元执行存储单元所存储的指令,以使该终端设备实现上述第三方面或第三方面的各种可能的实现方式中的功能,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是该终端设备内的位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
第八方面,本申请实施例提供一种寻呼装置,该装置可以是PCF网元,也可以是PCF网元内的芯片。该装置可以包括处理单元、发送单元和接收单元。当该装置是PCF网元时,该处理单元可以是处理器,发送单元可以是发送器,接收单元可以是接收器;该PCF网元还可以包括存储单元,该存储单元可以是存储器;该存储单元用于存储指令,该处理单元执行该存储单元所存储的指令,以使该PCF网元实现上述第四方面或第四方面的各种可能的实现方式中的功能。当该装置是PCF网元内的芯片时,该处理单元可以是处理器,该收发单元可以是输入/输出接口、管脚或电路等;该处理单元执行存储单元所存储的指令,以使该PCF网元实现上述第四方面或第四方面的各种可能的实现方式中的功能,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是该PCF网元内的位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
第九方面,本申请实施例提供一种包含指令的计算机程序产品,当其在SMF网元上运行时,使得SMF网元执行上述第一方面或第一方面的各种可能的实现方式中的方法。
第十方面,本申请实施例提供一种包含指令的计算机程序产品,当其在AMF网元上运行时,使得AMF网元机执行上述第二方面或第二方面的各种可能的实现方式中的方法。
第十一方面,本申请实施例提供一种包含指令的计算机程序产品,当其在终端设备上运行时,使得终端设备执行上述第三方面或第三方面的各种可能的实现方式中的方法。
第十二方面,本申请实施例提供一种包含指令的计算机程序产品,当其在PCF网元上运行时,使得PCF网元执行上述第四方面或第四方面的各种可能的实现方式中的方法。
第十三方面,本申请实施例提供一种计算机可读存储介质,该计算机可读存储介质中存储有指令,当其在SMF网元上运行时,使得SMF网元执行上述第一方面或第一方面的各种可能的实现方式中的方法。
第十四方面,本申请实施例提供一种计算机可读存储介质,该计算机可读存储介质中存储有指令,当其在AMF网元上运行时,使得AMF网元执行上述第二方面或第二方面的各种可能的实现方式中的方法。
第十五方面,本申请实施例提供一种计算机可读存储介质,该计算机可读存储介质中存储有指令,当其在终端设备上运行时,使得终端设备执行上述第三方面或第三方面的各种可能的实现方式中的方法。
第十六方面,本申请实施例提供一种计算机可读存储介质,该计算机可读存储介质中存储有指令,当其在PCF网元上运行时,使得PCF网元执行上述第四方面或第四方面的各种可能的实现方式中的方法。
本申请实施例提供的网络节点选择方法及装置,SMF网元获取接入网设备的传输能力信息,根据接入网设备的传输能力信息,为终端设备选择支持该传输能力信息包含的至少一种传输能力的UPF网元。该过程中,SMF网元通过获取接入网设备的传输 能力,根据接入网设备的传输能力选择UPF网元,由于选择出的UPF网元支持接入网设备采用的传输能力,使得接入网设备与UPF网元之间的能够成功传输数据,从而提高数据传输成功率。
附图说明
图1A为本申请实施例所适用的基于服务化的5G系统架构示意图;
图1B为本申请实施例所适用的基于参考点的非漫游5G系统架构示意图;
图2是本申请实施例提供的一种网络节点选择方法的流程图;
图3A是本申请实施例提供的网络节点选择方法中一种SMF网元接收传输能力信息的示意图;
图3B是本申请实施例提供的网络节点选择方法中另一种SMF网元接收传输能力信息的示意图;
图4是本申请实施例提供的另一种网络节点选择方法的流程图;
图5是本申请实施例提供的又一种网络节点选择方法的流程图;
图6是本申请实施例中的又一种网络节点选择方法的流程图;
图7是本申请实施例提供的又一种网络节点选择方法的流程图;
图8A是本申请实施例提供的又一种网络节点选择方法的流程图;
图8B是本申请实施例提供的又一种网络节点选择方法的流程图;
图9为本申请实施例提供的一种网络节点选择装置的结构示意图;
图10为本申请实施例提供的另一种网络节点选择装置的结构示意图;
图11为本申请实施例提供的又一种网络节点选择装置的结构示意图;
图12为本申请实施例提供的又一种网络节点选择装置的结构示意图;
图13为本申请实施例提供的又一种网络节点选择装置的结构示意图。
具体实施方式
5G网络架构中,终端设备通过终端设备到数据网络(data network,DN)之间建立的分组数据单元(packet data unit,PDU)会话,来访问数据网络。建立PDU会话时,SMF网元选择UPF网元以建立PDU会话。之后,上行数据发送过程中,为终端设备提供服务的接入网设备接收到来自终端设备的数据后,将该数据发送给UPF网元;下行数据发送过程中,UPF网元发送的数据到达为终端设备提供服务的接入网设备后,由该接入网设备将数据发送给终端设备。
当采用UPF网元发送数据时,若需要接入网设备与UPF网元之间采用某种特定传输能力传输数据,则要求接入网设备与UPF均支持该种传输能力。然而,接入网设备的传输能力与UPF网元的传输能力并不是总是对等的,即接入网设备支持的传输能力,UPF网元并不支持。例如,基于卫星通信的5G网络架构中,利用卫星通信作为回传链路,对于上行数据传输:终端设备发送数据给陆地接入网设备,再由陆地接入网设备将该数据发送给卫星,最后由卫星将该数据发送给UPF网元;对于下行数据传输:数据由UPF网元发送给卫星,卫星将数据发送给陆地接入网设备,由陆 地接入网设备将数据发送给终端设备。该上下行数据传输过程中,要求接入网设备与UPF网元均具备卫星通信的传输能力。然而,一个区域内的多个UPF网元中,很可能只有部分UPF网元具备卫星通信的传输能力,SMF网元根据终端设备的位置选择UPF网元,若选择出的UPF网元不支持卫星通信,则导致数据传输失败。
有鉴于此,本申请实施例提供一种网络节点选择方法及装置,SMF网元通过获取接入网设备的传输能力,根据接入网设备的传输能力选择UPF网元,由于选择出的UPF网元支持接入网设备采用的传输能力,使得接入网设备与UPF网元之间的能够成功传输数据,从而提高数据传输成功率。
在本申请实施例中,“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言,使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
本申请实施例提供的通信方法可用于第三代(the 3rd Generation,3G)移动通信、长期演进(Long Term Evolution,LTE)系统,第四代(the 4th Generation,4G)移动通信系统、高级长期演进(Long Term Evolution-Advanced,LTE-A)系统、第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)相关的蜂窝系统、第五代(the 5th Generation,5G)移动通信系统以及后续演进的通信系统。
本申请实施例中涉及的接入网设备,是为终端设备提供接入服务的设备,包含无线接入网(radio access network,RAN)设备和接入网(access network,AN)设备。RAN设备主要是第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)网络中的无线网络设备,AN设备可以是non-3GPP定义的接入网设备。其中,RAN设备:主要负责空口侧的无线资源管理、服务质量(quality of service,QoS)管理、数据压缩和加密等功能。RAN设备可以包括各种形式的基站,例如:宏基站,微基站(也称为小站),中继站,接入点等。在采用不同的无线接入技术的系统中,具备基站功能的设备的名称可能会有所不同,例如,5G网络架构中,称为RAN设备或者gNB(5G NodeB);长期演进(Long Term Evolution,LTE)网络架构中,称为演进的节点B(evolved NodeB,eNB或者eNodeB);在第三代(3rd generation,3G)网络架构中,称为节点B(Node B)等。AN设备设备允许终端设备和3GPP核心网之间采用非3GPP技术互连互通,其中,非3GPP技术例如:无线保真(Wireless Fidelity,Wi-Fi)技术、全球微波互联接入(Worldwide Interoperability for Microwave Access,WiMAX)技术、码分多址(code division multiple access,CDMA)技术等。
本申请实施例中涉及的终端设备,可以为用户设备(user equipment,UE)、手持终端、笔记本电脑、用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant,PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)或者无线本地环路(wireless local loop,WLL)台、机器类型通信(machine type communication,MTC)终端或是其他可以接入网络的设备。终端设备与接入网设备之间采用某种空口技术相互通信。
本申请实施例中的传输能力,包括接入网设备与用户面功能网元之间的传输网类型(也称之为传输网性质)、接入网设备与用户面功能网元之间的传输时延、带宽或容量等。 当传输能力包含接入网设备支持的传输网类型时,传输能力包括但不限于光纤通信传输、5G新无线(new radio,NR)技术通信传输、卫星通信传输等,其中,卫星通信传输包括低轨(low earth orbiting,LEO)卫星通信传输、中轨(medium earth orbitin,MEO)卫星通信传输、与地球同步(geostationary earth orbiting,GEO)卫星通信传输等。一般而言,只有接入网设备和UPF网元同时满足某种特定传输能力时,接入网设备与UPF网元才能使用该种传输能力传输数据。即接入网设备和UPF网元通过该特定传输能力进行数据传输。
下面,以5G网络架构为例,对本申请实施例所述的网络节点选择方法所适用的网络架构进行详细说明。
图1A为本申请实施例所适用的基于服务化的5G系统架构示意图,图1B为本申请实施例所适用的基于参考点的非漫游5G系统架构示意图。请参照图1A和图1B,5G系统架构分为接入网部分和核心网部分,接入网部分包括RAN设备,用于实现无线接入有关的功能;核心网部分包括的关键逻辑网元有:AMF网元、UPF网元、SMF网元、策略控制功能(policy control function),PCF)网元、统一数据管理(unified data management,UDM)网元等。另外,5G网络还包括应用功能(Application Function,AF)网元、网络切片选择功能(network slice selection function,NSSF)网元、认证服务功能(authentication server function、AUSF)网元、网络开发功能(network exposure function,NEF)网元、网络存储功能(NF repository function,NEF)网元、认证服务功能(Authentication Server Function、AUSF)网元等。N1~N25(如果存在的话)表示消息,如AMF网元与SMF网元之间的N11消息。下面,对一些主要网元的功能进行详细描述。
AMF网元:主要负责移动网络中的移动性管理,如用户位置更新、用户注册网络、用户切换等。
SMF网元:主要负责移动网络中的会话管理,如会话建立、修改、释放等,具备的功能包括为用户分配IP地址、选择提供数据转发功能的UPF等。
UPF网元:负责终端设备中用户数据的转发和接收。可以从数据网络接收用户数据,通过接入网设备传输给终端设备;UPF网元还可以通过接入网设备从终端设备接收用户数据,转发到数据网络。UPF网元中为终端设备提供服务的传输资源和调度功能由SMF网元管理控制的。
AF网元:主要支持与3GPP核心网交互来提供服务,例如影响数据路由决策,策略控制功能或者向网络侧提供第三方的一些服务。
UDM网元:用于生成认证信任状,用户标识处理(如存储和管理用户永久身份等),接入授权控制和签约数据管理等。
数据网络:指的是为用户提供数据传输服务的服务网络,如IP多媒体业务(IP Multi-media Service,IMS)、Internet等。
下面,在上述图1A和图1B所示系统架构的基础上,以特定的传输能力为卫星通信能力,对上述的网络节点选择方法进行详细说明。示例性的,可参见图2,图2是本申请实施例提供的一种网络节点选择方法的流程图。本实施例是从SMF网元的角度,对本申请所述的网络节点选择方法进行详细说明的。本实施例包括:
101、会话管理功能SMF网元获取接入网设备的传输能力信息。
本步骤中,SMF网元通过AMF网元等获取接入网设备的传输能力信息。
102、SMF网元根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,所述接入网设备是为所述终端设备提供服务的接入网设备。
示例性的,SMF网元管理多个UPF网元,SMF网元可以获取到该些UPF网元中每一个UPF网元的传输能力。SMF网元接收到接入网设备的传输能力信息后,可以根据接入网设备的传输能力信息包含的传输能力,从多个UPF中选择出具备传输能力信息包含的传输能力的UPF。例如,SMF网元接收到接入网设备的传输能力信息包含一种传输能力,为支持卫星通信传输。SMF网元管理10个UPF网元,则SMF网元从该10个UPF网元中,选择出支持卫星通信传输的UPF网元。再如,SMF网元接收到接入网设备的传输能力信息包含两种传输能力,分别为支持LEO卫星通信传输和GEO通信传输,SMF网元根据本地策略确定PDU会话使用LEO卫星通信传输,进一步的,SMF网元从管理的10个UPF网元中选择出支持LEO卫星通信传输的UPF网元。
本实施例中,SMF网元获取接入网设备的传输能力信息,根据接入网设备的传输能力信息,为终端设备选择支持该传输能力信息包含的至少一种传输能力的UPF网元。该过程中,SMF网元通过获取接入网设备的传输能力,根据接入网设备的传输能力选择UPF网元,由于选择出的UPF网元支持接入网设备采用的传输能力,使得接入网设备与UPF网元能够成功传输数据,从而提高数据传输成功率。
下面,对SMF网元如何获取接入网设备的传输能力信息进行详细说明。示例性的,可参加图3A和图3B。
图3A是本申请实施例提供的网络节点选择方法中一种SMF网元接收传输能力信息的示意图。请参照图3A,本实施例包括:
201、AMF网元获取接入网设备的传输能力信息。
示例性,AMF网元接收到来自终端设备的PDU会话建立请求时,获取为该终端设备提供服务的接入网设备的传输能力信息,或者,接入网设备发生故障时,AMF网元获取该发生故障的接入网设备的传输能力信息。
202、AMF网元向会话管理功能SMF网元发送所述传输能力信息。
相应的,SMF网元接收来自AMF网元的接入网设备的传输能力信息。
下面,对步骤202中,AMF网元如何向SMF网元发送传输能力信息进行详细说明。
一种可行的设计中,AMF网元通过PDU会话管理消息将接入网设备的传输能力信息发送给SMF网元。该种设计可以理解为针对UE级别或PDU会话级别的场景。该种设计中,图3A中步骤201之前,还包括:
200、AMF网元接收来自终端设备的分组数据单元PDU会话建立请求。
AMF接收来自终端设备的PDU会话请求时,获取为终端设备提供服务的接入网设备的相关信息,如接入网设备的标识等。此时,步骤201中,AMF网元根据该PDU会话建立请求获取接入网设备的传输能力信息,该接入网设备即为发起PDU会话建立请求的终端设备提供服务的接入网设备;步骤202中,AMF网元向SMF发送PDU会话管理消息,该PDU会话管理消息携带接入网设备的传输能力信息和PDU会话建立请求。
示例性的,AMF网元上可以预存一些接入网设备的传输能力信息,此时,AMF网元接收到来自终端设备的PDU会话建立请求时,从本地的UE上下文中获取为发起PDU会话的终端设备提供服务的接入网设备的传输能力;或者,AMF网元上的UE上下文中不包含任何接入网设备的传输能力信息,则AMF网元接收到来自终端设备的PDU会话建立请求后,从接入网设备等网元获取该接入设备的传输能力信息。
例如,AMF接收到PDU会话请求后,根据该PDU会话请求确定出接入网设备,向该接入网设备发送请求消息以请求传输能力信息,然后,接收来自该接入网设备的传输能力信息。或者,AMF接收到PDU会话请求时,接收来自该接入网设备的传输能力信息。
再如,所述AMF网元接收来自所述接入网设备的所述接入网设备的标识,并根据所述接入网设备的标识获取所述接入网设备的传输能力信息。
又如,AMF网元获取所述接入网设备的传输层关联信息,并根据所述传输层关联信息获取所述接入网设备的传输能力信息。
又如,AMF网元获取终端设备的位置信息,并根据所述位置信息获取所述接入网设备的传输能力信息,所述接入网设备是为所述终端设备提供服务的接入网设备。该位置信息可以为地理坐标等。
本实施例中,AMF网元可以在终端设备的注册过程或PDU会话建立过程,从本地或其他网元获取到接入网设备的传输能力信息,实现灵活获取接入网设备的传输能力信息的目的。
另一种可行的设计中当所述接入网设备满足预设条件时,所述AMF网元获取所述接入网设备的传输能力信息。例如,接入网设备发生故障,而且发生故障之前,接入网设备支持卫星传输和光纤传输,由于地震等使的接入网与UPF之间的光纤输网发生故障,发生故障后,接入网设备支持卫星传输;再如,接入网设备发生故障,发生故障之前,接入网设备支持光纤传输,由于地震等使的接入网设备与UPF网元之间的光纤输网发生故障,发生故障后,接入网设备升级支持卫星传输。这两种场景下,由该接入网设备提供服务的所有的终端设备都受到影响,因此,该种设计可以理解为针对节点级别的场景。该种设计中,步骤201中,当接入网设备满足预设条件时,AMF网元获取所述接入网设备的传输能力信息,该传输能力例如为接入网设备主动向AMF网元上报的;步骤202中,AMF网元通过N11消息将接入网设备的传输能力信息发送给SMF网元;相应的,SMF网元接收来自AMF网元的携带接入网设备的传输能力信息的N11消息。
需要说明的是,AMF网元也可以通过其他消息将接入网设备的传输能力信息发送给SMF网元。
本实施例中,AMF网元通过PDU会话管理消息将接入网设备的传输能力信息发送给SMF网元,以满足UE级别的场景PDU会话级别的场景;AMF网元通过N11消息将接入网设备的传输能力信息发送给SMF网元,以满足节点级别的场景。
图3B是本申请实施例提供的网络节点选择方法中另一种SMF网元接收传输能力信息的示意图。请参照图3B,本实施例包括:
301、终端设备接收接入网设备的传输能力信息。
示例性的,终端设备可以在注册过程中从接入网设备获取接入网设备的传输能力信息,或者,从AMF网元获取接入网设备的传输能力信息。
302、所述终端设备向会话管理功能SMF网元发送所述传输能力信息。
相应的,所述SMF接收来自终端设备的所述接入网设备的传输能力信息。
示例性的,终端设备将接入网设备的传输能力信息发送给AMF网元,由AMF网元透传给SMF网元。
本实施例中,SMF网元接收到的接入网设备的传输能力信息是AMF网元获取并发送给SMF网元的,或者,是终端设备获取并发送给SMF网元的,实现SMF灵活获取接入网设备的传输能力信息的目的。
上述实施例中,SMF网元接收到接入网设备的传输能力信息后,还向接入网设备发送第二指示信息,以指示接入网设备向终端设备发送接入控制消息。
一种可行的设计中,所述SMF网元根据所述接入网设备的传输能力信息,向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控制消息。该设计针对系统架构中没有部署PCF网元的场景。例如,传输能力信息为卫星通信传输,而SMF网元判断出需要通过光纤传输业务数据,则SMF网元向接入网设备发送第二指示信息,使得接入网设备向终端设备发送拒绝接入的接入控制消息或者使得接入网设备激活接入控制机制,如仅允许特定的UE发起PDU会话或者UE发起特定业务的PDU会话。
另一种可行的设计中,所述SMF网元接收来自PCF网元的接入控制策略信息,并根据所述接入控制策略信息向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控制消息。该设计针对系统架构中部署PCF网元的场景。
本实施例中,SMF网元接收到接入网设备的传输能力信息后,自己决策出第二指示信息,或者,接收到PCF网元的接入控制策略,根据该接入控制策略决策出第二指示信息并向接入网设备发送,使得接入设备根据第二指示信息控制终端设备接入,实现根据接入网设备的传输能力控制终端设备接入的目的。
下面,用几个例子对上述的网络节点选择方法进行详细说明,示例性的,可参加图4~图6。
图4是本申请实施例提供的另一种网络节点选择方法的流程图。本实施例中,SMF网元接收到的接入网设备的传输能力信息来自AMF网元,本实施例包括:
401、终端设备向AMF网元发送PDU会话建立请求。
相应的,AMF网元接收该PDU会话建立请求。该PDU会话建立请求包含数据网络名称(data network name,DNN)、单网络切片选择辅助信息(single network slice selection sssistance information,S-NSSAI)等。
402、AMF网元选择SMF网元。
示例性的,NRF网元存储SMF网元相关信息,相关信息包括SMF网元管理的UPF网元的标识、各UPF的传输能力等。AMF网元接收到接入网设备的传输能力信息后,可以向网络存储功能NRF网元发送该传输能力信息,用于使得NRF网元根据 传输能力信息确定至少一个SMF网元并向AMF网元发送第三指示信息;相应的,AMF网元接收来自NRF网元的第三指示信息,该第三指示信息用于指示该至少一个SMF网元,该至少一个SMF网元中的每个SMF网元满足如下条件:SMF网元管理多个UPF网元,该多个UPF网元中包含支持传输能力信息中的至少一种或所有传输能力的UPF网元。例如,接入网设备的传输能力信息指示该接入网设备仅支持卫星通信能力,则第三指示信息指示的该些SMF网元中的每个SMF网元满足如下条件:该SMF网元管理的多个UPF网元中,至少存在一个UPF网元,该UPF网元支持卫星通信能力。之后,AMF网元从该些SMF网元中选择出一个SMF网元。
403、AMF网元向SMF网元发送PDU会话创建上下文请求消息,该PDU会话创建上下文请求消息携带PDU会话建立请求和传输能力信息。
本步骤中,AMF网元向步骤402中选择出的SMF网元发送PDU会话管理消息,该PDU会话管理消息具体为PDU会话创建上下文请求消息,在服务化架构下PDU会话创建上下文请求消息为Nsmf_PDUSession_CreateSMContextRequest消息。
404、SMF网元与UDM网元执行注册或签约信息获取流程,或者,执行注册或签约信息更新流程。
405、SMF网元向AMF网元发送PDU会话创建上下文响应消息。
在服务化架构下PDU会话创建上下文响应消息即为Nsmf_PDUSession_Create SMContext Response消息。
406、SMF网元发起PDU会话建立认证和授权流程。
示例性的,SMF网元需要执行认证和授权时,则发起PDU会话建立认证和授权流程。
407、SMF网元选择PCF网元。
408、SMF网元与选择的PCF网元执行会话管理(session management,SM)策略关联建立流程或修改流程。
上述步骤407和408中,SMF网元将接入网设备的传输能力信息提供给PCF网元,以便PCF网元确定使用何种传输能力的PDU会话。若PCF确定不允许建立接入网设备支持的传输能力的PDU会话,则通知SMF网元拒绝建立PDU会话,并发送原因值给终端设备,使得终端设备不再发起PDU会话建立请求。
409、SMF网元与选择的UPF网元。
本步骤中,SMF网元根据接入网设备的传输能力信息,为终端设备选择UPF网元。
示例性的,SMF网元管理多个UPF网元,知道该些UPF网元的传输能力。若接入网设备的传输能力至少为两个,则SMF网元先从该些传输能力中选择出一个传输能力,以下称之为目标传输能力或特定的传输能力;之后,SMF网元根据该目标传输能力,从多个UPF网元中选择出支持该目标传输能力的UPF网元。
一种可行的实现方式中,所述SMF网元根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,包括:所述SMF根据本地策略和所述接入网设备的传输能力信息,为所述终端设备选择所述UPF网元。
该种实现方式中,系统架构中没有部署PCF网元,本地策略例如为优先级策略 或者DN网络需求策略(如,支持使用LEO卫星传输)等。例如,本地策略指示选择卫星通信能力,若接入网设备的传输能力信息包含光纤通信能力和卫星通信能力,则SMF网元将卫星通信能力作为目标能力,最终选择出的UPF支持卫星通信能力。
本实施例中,通过SMF网元选择目标传输能力进而根据目标传输能力选择UPF网元,实现没有部署PCF网元的系统架构中为终端设备选择出UPF网元的目的。
另一种可行的实现方式中,所述SMF网元根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,包括:所述SMF网元向策略控制功能PCF网元发送所述接入网设备的传输能力信息,所述传输能力信息用于所述PCF网元确定目标传输能力,该目标传输能力属于接入网设备的传输能力信息包含的至少一种传输能力;所述SMF网元接收来自所述PCF网元的第一指示信息,所述第一指示信息用于指示所述目标传输能力;所述SMF网元根据所述目标传输能力,为所述终端设备选择所述UPF网元。
该种实现方式中,系统架构中部署PCF网元,由PCF网元从传输能力信息包含的至少一种传输能力中选择出目标传输能力并指示给SMF网元。
本实施例中,通过PCF网元选择目标传输能力并指示给SMF网元,使得SMF网元根据目标传输能力选择UPF网元,实现系统架构中部署的PCF网元为终端设备选择出UPF网元的目的。
410、SMF网元向PCF网元发起SM策略关联修改流程。
411、SMF网元向UPF网元发送N4会话建立或修改请求消息。
412、SMF网元接收来自UPF网元的N4会话建立或修改响应消息。
413、SMF网元向AMF网元发送N1N2消息。
其中,N1N2消息即为服务化架构下的Namf_Communication_N1N2MessageTransfer消息,该N1N2消息包含N1 SM容器、N2 SM信息。可选的,N2 SM信息包含SMF选择的指示目标传输能力的指示信息,以便接入网设备根据该指示信息,确定出目标传输能力,并使用目标传输能力进行数据包的传输。
414、AMF网元向接入网设备发送N2 PDU会话请求。
相应的,接入网设备接收该N2 PDU会话请求,该N2 PDU会话请求包含N2 SM消息、NAS消息,NAS消息包含N1 SM容器。若上述步骤413中的N2 SM信息包含用于指示目标传输能力的指示信息,则本步骤中,N2 SM信息也包含用于指示目标传输能力的指示信息。
415、接入网设备与终端设备执行空口资源建立流程。
416、接入网设备向AMF网元发送N2 PDU会话响应消息。
该N2 PDU会话响应消息包含PDU会话标识(Identity,ID)、N2 SM信息等。
417、AMF网元向SMF网元发送PDU会话更新更新上下文请求消息。
在服务化架构下,PDU会话更新上下文请求消息即为Nsmf_PDUSession_UpdateSMContext Request消息,其中包含N2 SM信息。
418、SMF网元向UPF网元发送N4会话修改请求消息。
419、SMF网元接收来自UPF网元的N4会话修改响应消息。
420、SMF网元向AMF网元发送PDU会话更新上下文响应消息。
在服务化架构下PDU会话更新上下文响应消息即为Nsmf_PDUSession_UpdateSMContext Response消息,该PDU会话更新请求包含N2 SM信息。
421、SMF网元向AMF网元发送PDU会话通知。
在服务化架构下,PDU会话通知即为Nsmf_PDUSession_SMContextStatusNotify。
需要说明的是,本步骤为可选步骤。
422、SMF网元执行地址配置。
本步骤中,对于IPv4v6或IPv6类型的PDU会话,SMF执行地址的配置。
423、SMF网元与UDM网元执行去注册或去定义流程。
本步骤中,若PDU会话建立失败,则SMF网元与UDM网元执行去注册或去定义流程。
本实施例中,SMF网元通过AMF网元获取接入网设备的传输能力信息,根据传输能力信息确定出PDU会话对应的传输能力,如传输方式、时延等,使得SMF根据PDU会话对应的传输能力,选择支持该传输能力的UPF网元,能够实现接入网设备支持不同的传输能力的场景下,SMF选择合适的UPF网元进行PDU会话。
图5是本申请实施例提供的又一种网络节点选择方法的流程图。本实施例中,SMF网元接收到的接入网设备的传输能力信息来自终端设备,本实施例包括:
501、终端设备向AMF网元发送PDU会话建立请求。
本步骤与上述步骤401的不同之处在于,本步骤中,PDU会话建立请求除了携带DNN、S-NSSAI外,还携带接入网设备的传输能力信息,该接入网设备是为终端设备提供服务的接入网设备。终端设备可以在注册过程中从接入网设备获取传输能力信息,或者,从AMF网元获取接入网设备的传输能力信息。
502、AMF网元选择SMF网元。
具体可参见上述步骤501的描述,此处不再赘述。
503、AMF网元向SMF网元发送PDU会话创建上下文请求消息,该PDU会话创建上下文请求消息携带PDU会话建立请求,PDU会话建立请求携带传输能力信息。
本步骤与上述步骤403的不同之处在于,本步骤中,传输能力信息是携带在PDU会话建立请求中,而步骤403中,传输能力信息和PDU会话建立请求是独立的。
504、SMF网元与UDM网元执行注册或签约信息获取流程,或者,执行注册或签约信息更新流程。
505、SMF网元向AMF网元发送PDU会话创建上下文响应消息。
具体描述可参见上述步骤405的描述,此处不再赘述。
506、SMF网元发起PDU会话建立认证和授权流程。
示例性的,SMF网元需要执行认证和授权时,则发起PDU会话建立认证和授权流程。
507、SMF网元选择PCF网元。
508、SMF网元与选择的PCF网元执行会话管理(session management,SM)策略关联建立流程或修改流程。
具体可参见上述步骤408的描述,此处不再赘述。
509、SMF网元选择UPF网元。
具体可参见上述步骤409的描述,此处不再赘述。
510、SMF网元向PCF网元发起SM策略关联修改流程。
511、SMF网元向UPF网元发送N4会话建立或修改请求消息。
512、SMF网元接收来自UPF网元的N4会话建立或修改相应消息。
513、SMF网元向AMF网元发送N1N2消息。
具体可参见上述步骤413的描述,此处不再赘述。
514、AMF网元向接入网设备发送N2 PDU会话请求。
具体可参见上述步骤414的描述,此处不再赘述。
515、接入网设备与终端设备执行空口资源建立流程。
516、接入网设备向AMF网元发送N2 PDU会话响应消息。
该N2 PDU会话响应消息包含PDU会话标识(Identity,ID)、N2 SM信息等。
517、AMF网元向SMF网元发送PDU会话更新请求。
具体可参见上述步骤417的描述,此处不再赘述。
518、SMF网元向UPF网元发送N4会话修改请求消息。
519、SMF网元接收来自UPF网元的N4会话修改响应消息。
520、SMF网元向AMF网元发送PDU会话更新上下文响应消息。
具体可参见上述步骤420,此处不再赘述。
521、SMF网元向AMF网元发送PDU会话通知。
具体的,可参见上述步骤421的描述,此处不再赘述。
522、SMF网元执行地址配置。
本步骤中,对于IPv4v6或IPv6类型的PDU会话,SMF执行地址的配置。
523、SMF网元与UDM网元执行去注册或去定义流程。
本步骤中,若PDU会话建立失败,则SMF网元与UDM网元执行去注册或去定义流程。
本实施例中,SMF网元通过终端设备获取接入网设备的传输能力信息,根据传输能力信息确定出PDU会话对应的传输能力,如传输方式、时延等,使得SMF根据PDU会话对应的传输能力,选择支持该传输能力的UPF网元,能够实现接入网设备支持不同的传输能力的场景下,SMF选择合适的UPF网元进行PDU会话。
图6是本申请实施例中的又一种网络节点选择方法的流程图。本实施例适用于SMF网元根据接入网设备的传输能力信息,确定出UPF网元后,接入网设备的传输能力发生更新的场景。本实施例包括:
601、AMF网元获取接入网设备最新的传输能力信息。
本步骤中,AMF网元根据节点级别的配置流程或N2连接获取接入网设备最新的传输能力信息。
602、AMF网元向SMF网元发送N11请求消息。
本步骤中,AMF网元向所有与接入网设备建立连接的SMF网元发送N11请求消息,该N11请求消息中包含接入网设备最新的传输能力信息,该N11请求消息为节点级别的消息。
603、SMF网元向AMF网元发送N11响应消息。
604、SMF网元向PCF网元发送N7请求消息。
相应的,PCF网元接收该N7请求消息。
本步骤中,SMF网元根据最新的传输能力信息,选择PCF网元,并向选择出的PCF网元发送N7请求消息,该N7请求消息携带接入网设备最新的传输能力信息。该N7请求消息为节点级别消息或PDU会话级别消息。
605、PCF网元向SMF网元发送N7响应消息。
若上述步骤604中N7请求消息为PDU会话级别的消息,则本步骤中,N7响应消息用于指示PDU会话是否能够使用传输能力发生更新的接入网设备。
若上述步骤604中N7请求消息为节点级别的消息,则本步骤中,PCF网元向所有相关的SMF网元发送更新策略,以使得SMF网元发起PDU会话修改流程或PDU会话删除流程。
606、SMF网元发起PDU会话修改流程或PDU会话删除流程。
其中,发起PDU会话修改流程指SMF根据本地策略或SMF网元发送的策略,选择新的UPF并建立PDU会话。
本实施例中,倘若接入网设备的传输能力发生更新,则SMF网元根据接入网设备最新的传输能力信息,确定删除PDU会话或修改PDU会话。
上述各实施例中,SMF网元管理至少一个UPF网元,SMF网元预先获取并保存各UPF网元的传输能力。之后,SMF网元接收到接入网设备的传输能力信息后,根据本地策略或由PCF网元确定出目标传输能力后,根据该目标传输能力在至少一个UPF网元中,选择出一个支持该目标传输能力的UPF网元。下面,对SMF网元预先如何获取至少一个UPF网元的传输能力进行详细说明。
一种可行的实现方式中,SMF网元通过NRF网元获取至少一个UPF网元的传输能力信息。该种实现方式中,至少一个UPF网元的传输能力被配置在NRF网元上,SMF网元通过NRF网元获取具有特定传输能力的UPF网元或通过NRF获取UPF网元的传输能力。或者,至少一个UPF网元的传输能力被配置在各UPF网元上,UPF网元将传输能力信息注册在NRF网元上,SMF网元通过NRF网元获取具有特定传输能力的UPF网元或通过NRF获取UPF网元的传输能力。示例性的,可参见图7。
图7是本申请实施例提供的又一种网络节点选择方法的流程图,本实施例包括:
701、SMF网元向NRF网元发送订阅请求,所述订阅请求用于请求所述UPF网元的信息,所述UPF网元的信息包含所述UPF网元的传输能力信息。
相应的,NRF网元接收来自SMF网元的订阅请求。
可选的,该订阅请求携带预设传输能力信息,该预设传输能力信息包含在UPF provision info中,UPF provision info中还包含UPF网元的NDD、S-NSSAI、SMF网元的标识等。
702、NRF网元向SMF网元发送UPF网元的信息。
相应的,SMF网元接收来自于NRF网元的UPF网元的信息,该UPF网元的信息包含一个或多个UPF网元的信息,其中,一个或多个网元为SMF网元所管理的UPF网元中支持预设传输能力信息所指示的传输能力的UPF网元。
当部署新的UPF网元时,需要执行如下步骤:
703、操作维护管理网元部署新的UPF网元。
本步骤中,网管通过操作维护管理(Operation Administration and Maintenance,OAM)网元部署新的UPF网元。
704、操作维护管理网元配置新的UPF网元。
本步骤中,UPF网元上被配置NRF ID和该UPF网元支持的传输能力,其中,该UPF网元支持的传输能力包含在UPF provision info中。
705、UPF网元向NRF注册。
本步骤中,UPF
706、OAM网元将新的UPF网元注册到NRF中。
需要说明的是,步骤705和706是二选一的关系,即只需要执行其中一个步骤即可。
707、NRF网元向SMF网元发送UPF网元的信息,所述UPF网元的信息包含所述至少一个UPF网元的传输能力。
若上述步骤701中,订阅请求还携带预设传输能力信息,则本步骤中,UPF网元的信息中的各所述UPF网元支持所述预设传输能力。
另一种可行的实现方式中,SMF网元通过与UPF网元之间进行N4节点级别的流程时获取UPF网元的传输能力信息。示例性的,可参见图8A和图8B。
图8A是本申请实施例提供的又一种网络节点选择方法的流程图,本实施例包括:
801a、SMF网元向所述UPF网元发送N4请求消息。
相应的,UPF网元接收来自SMF网元的N4请求消息。
802a、UPF网元向SMF网元发送N4响应消息,N4请求消息携带所述UPF网元的传输能力信息。
本实施例中,SMF网元主动通过N4关联建立或更新请求,获取UPF网元的传输能力信息,实现SMF网元获取至少UPF网元的传输能力信息的目的。
图8B是本申请实施例提供的又一种网络节点选择方法的流程图,本实施例包括:
801b、UPF网元向SMF网元发送N4请求消息,N4请求消息携带所述UPF网元的传输能力信息。
相应的,SMF网元接收来自UPF网元的N4请求消息。
802b、SMF网元向UPF网元发送N4响应消息。
本实施例中,UPF网元主动通过N4关联建立或更新请求,向SMF网元上报UPF网元的传输能力信息,实现SMF网元获取至少UPF网元的传输能力的目的。
图9为本申请实施例提供的一种网络节点选择装置的结构示意图。本实施例所涉及的 网络节点选择装置可以为SMF网元,也可以为应用于SMF网元的芯片。该网络节点选择装置可以用于执行上述实施例中SMF网元的功能。如图9所示,该网络节点选择装置100可以包括:
处理单元11,用于获取接入网设备的传输能力信息,根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,所述接入网设备是为所述终端设备提供服务的接入网设备。
一种可行的设计中,所述装置还包括:接收单元12,所述处理单元11,用于控制所述接收单元11接收来自接入和移动管理功能AMF网元的所述接入网设备的传输能力信息;或者,用于控制所述接收单元11接收来自所述终端设备的所述接入网设备的传输能力信息。
一种可行的设计中,所述接入网设备的传输能力信息来自于所述AMF网元时,
所述接收单元12,用于接收来自所述AMF网元的分组数据单元PDU会话管理消息,所述PDU会话管理消息携带所述接入网设备的传输能力信息;
或者,
所述接收单元12,用于接收来自所述AMF网元的N11消息,所述N11消息携带所述接入网设备的传输能力信息。
一种可行的设计中,所述接入网设备的传输能力信息来自于所述终端设备时,所述接收单元12,用于接收来自所述终端设备的非接入层NAS消息,所述NAS消息携带所述接入网设备的传输能力信息。
一种可行的设计中,所述处理单元11,用于根据本地策略和所述接入网设备的传输能力信息,为所述终端设备选择所述UPF网元。
一种可行的设计中,上述的装置100还包括:
发送单元13,用于向策略控制功能PCF发送所述接入网设备的传输能力信息,所述接入网设备的传输能力信息用于所述PCF网元确定目标传输能力;
所述接收单元12,还用于接收来自所述PCF网元的第一指示信息,所述第一指示信息用于指示所述目标传输能力;
所述处理单元11,用于根据所述目标传输能力,为所述终端设备选择所述UPF网元。
一种可行的设计中,所述处理单元11,用于获取UPF网元的传输能力信息,根据所述UPF网元的传输能力信息,为所述终端设备选择一个支持所述目标传输能力的UPF网元。
一种可行的设计中,发送单元13,用于向网络存储功能NRF网元发送订阅请求,所述订阅请求用于请求所述UPF网元的信息,所述UPF网元的信息包含所述UPF网元的传输能力信息;
所述接收单元12,还用于接收来自所述NRF网元的所述UPF网元的信息。
一种可行的设计中,所述订阅请求携带预设传输能力信息,所述UPF网元为所述SMF网元所管理的UPF网元中支持所述预设传输能力信息所指示的传输能力的UPF网元。
一种可行的设计中,发送单元13,用于向所述UPF网元发送N4请求消息,接 收单元12,还用于接收来自UPF网元的N4响应消息,所述N4响应消息携带所述UPF网元的传输能力信息;
或者,
所述接收单元12,用于接收来自所述UPF网元的N4请求消息,所述N4请求消息携带所述UPF网元的传输能力信息。
一种可行的设计中,所述发送单元13,用于根据所述接入网设备的传输能力信息,向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控制消息;
或者,
所述接收单元12,用于接收来自PCF网元的接入控制策略信息;所述发送单元13,用于根据所述接入控制策略信息向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控制消息。
本申请实施例提供的网络节点选择装置,可以执行上述实施例中SMF网元的动作,其实现原理和技术效果类似,在此不再赘述。
图10为本申请实施例提供的另一种网络节点选择装置的结构示意图。本实施例所涉及的网络节点选择装置可以为AMF网元,也可以为应用于AMF网元的芯片。该网络节点选择装置可以用于执行上述实施例中AMF网元的功能。如图10所示,该网络节点选择装置200可以包括:
处理单元21,用于获取接入网设备的传输能力信息,所述传输能力信息包含至少一种传输能力;
发送单元22,用于向会话管理功能SMF网元发送所述传输能力信息。
一种可行的设计中,所述处理单元21,还用于根据所述接入网设备的传输能力信息,选择所述SMF网元。
一种可行的设计中,所述装置200还包括:接收单元23,
所述发送单元22,用于向网络存储功能NRF网元发送所述接入网设备的传输能力信息,所述接入网设备的传输能力信息用于所述NRF网元确定至少一个目标SMF网元;
所述接收单元23,用于接收来自所述NRF网元的第三指示信息,所述第三指示信息用于指示所述至少一个目标SMF网元;
所述处理单元21,用于从所述至少一个目标SMF网元中确定所述SMF网元。
一种可行的设计中,所述发送单元22,用于向所述SMF网元发送PDU会话管理消息,所述PDU会话管理消息携带PDU会话建立请求和所述接入网设备的传输能力信息,所述PDU会话建立请求用于请求为终端设备建立PDU会话,所述接入网设备是为所述终端设备提供服务的接入网设备。
一种可行的设计中,所述接收单元23,用于接收来自所述接入网设备的所述传输能力信息;或者,
所述接收单元23,用于接收来自所述接入网设备的所述接入网设备的标识,所述处理单元21,用于根据所述接入网设备的标识获取所述接入网设备的传输能力信息;或者,
所述处理单元21,用于获取所述接入网设备的传输层关联信息,并根据所述传输层关联信息获取所述接入网设备的传输能力信息;或者,
所述处理单元21,用于获取终端设备的位置信息,并根据所述位置信息获取所述接入网设备的传输能力信息,所述接入网设备是为所述终端设备提供服务的接入网设备。
一种可行的设计中,所述处理单元21,在所述接入网设备满足预设条件时,获取所述接入网设备的传输能力信息。
本申请实施例提供的网络节点选择装置,可以执行上述实施例中AMF网元的动作,其实现原理和技术效果类似,在此不再赘述。
图11为本申请实施例提供的又一种网络节点选择装置的结构示意图。本实施例所涉及的网络节点选择装置可以为终端设备,也可以为应用于终端设备的芯片。该网络节点选择装置可以用于执行上述实施例中终端设备的功能。如图11所示,该网络节点选择装置300可以包括:
接收单元31,用于接收接入网设备的传输能力信息;
发送单元32,用于向会话管理功能SMF网元发送所述传输能力信息。
一种可行的设计中,所述接收单元31,用于接收来自所述接入网设备或者接入和移动管理功能AMF网元的所述传输能力信息。
一种可行的设计中,所述发送单元32,用于向所述SMF网元发送非接入层NAS消息,所述NAS消息携带所述传输能力信息。
本申请实施例提供的网络节点选择装置,可以执行上述实施例中终端设备的动作,其实现原理和技术效果类似,在此不再赘述。
图12为本申请实施例提供的又一种网络节点选择装置的结构示意图。本实施例所涉及的网络节点选择装置可以为PCF网元,也可以为应用于PCF网元的芯片。该网络节点选择装置可以用于执行上述实施例中PCF网元的功能。如图12所示,该网络节点选择装置400可以包括:
接收单元41,用于接收来自会话管理功能SMF网元的接入网设备的传输能力信息;
处理单元42,用于根据所述传输能力信息,确定目标传输能力;
发送单元43,用于向所述SMF网元发送第一指示信息,所述第一指示信息用于指示所述目标传输能力。
一种可行的设计中,所述发送单元43,在向所述SMF网元发送所述第一指示信息之后,还用于向所述SMF网元发送接入控制策略信息。
本申请实施例提供的网络节点选择装置,可以执行上述实施例中PCF网元的动作,其实现原理和技术效果类似,在此不再赘述。
需要说明的是,应理解以上接收单元实际实现时可以为接收器、发送单元实际实现时可以为发送器。而处理单元可以以软件通过处理元件调用的形式实现;也可以以硬件的形式实现。例如,处理单元可以为单独设立的处理元件,也可以集成在上述装置的某一个芯片中实现,此外,也可以以程序代码的形式存储于上述装置的存储器中,由上述装置的某一个处理元件调用并执行以上处理单元的功能。此外这些单元全部或部分可以集成在一起, 也可以独立实现。这里所述的处理元件可以是一种集成电路,具有信号的处理能力。在实现过程中,上述方法的各步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如,以上这些单元可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个专用集成电路(application specific integrated circuit,ASIC),或,一个或多个微处理器(digital signal processor,DSP),或,一个或者多个现场可编程门阵列(field programmable gate array,FPGA)等。再如,当以上某个单元通过处理元件调度程序代码的形式实现时,该处理元件可以是通用处理器,例如中央处理器(central processing unit,CPU)或其它可以调用程序代码的处理器。再如,这些单元可以集成在一起,以片上系统(system-on-a-chip,SOC)的形式实现。
图13为本申请实施例提供的又一种网络节点选择装置的结构示意图。如图13所示,该网络节点选择装置500可以包括:处理器51(例如CPU)、存储器52、接收器53、发送器54;接收器53和发送器54均耦合至处理器51,处理器51控制接收器53的接收动作、处理器51控制发送器54的发送动作;存储器52可能包含高速随机存取存储器(random-access memory,RAM),也可能还包括非易失性存储器(non-volatile memory,NVM),例如至少一个磁盘存储器,存储器52中可以存储各种指令,以用于完成各种处理功能以及实现本申请的方法步骤。可选的,本申请涉及的网络节点选择装置还可以包括:通信总线55。接收器53和发送器54可以集成在网络节点选择装置的收发信机中,也可以为网络节点选择装置上独立的收发天线。通信总线55用于实现元件之间的通信连接。
在本申请实施例中,上述存储器52用于存储计算机可执行程序代码,程序代码包括指令;当处理器51执行指令时,使网络节点选择装置的处理器51执行上述方法实施例中SMF网元的处理动作,使接收器53执行上述实施例中SMF网元的接收动作,使发送器54执行上述方法实施例中SMF网元的发送动作,其实现原理和技术效果类似,在此不再赘述。或者,
上述存储器52用于存储计算机可执行程序代码,程序代码包括指令;当处理器51执行指令时,使网络节点选择装置的处理器51执行上述方法实施例中AMF网元的处理动作,使接收器53执行上述实施例中AMF网元的接收动作,使发送器54执行上述方法实施例中AMF网元的发送动作,其实现原理和技术效果类似,在此不再赘述。或者,
上述存储器52用于存储计算机可执行程序代码,程序代码包括指令;当处理器51执行指令时,使网络节点选择装置的处理器51执行上述方法实施例中终端设备的处理动作,使接收器53执行上述实施例中终端设备的接收动作,使发送器54执行上述方法实施例中终端设备的发送动作,其实现原理和技术效果类似,在此不再赘述。或者,
上述存储器52用于存储计算机可执行程序代码,程序代码包括指令;当处理器51执行指令时,使网络节点选择装置的处理器51执行上述方法实施例中PCF网元的处理动作,使接收器53执行上述实施例中PCF网元的接收动作,使发送器54执行上述方法实施例中PCF网元的发送动作,其实现原理和技术效果类似,在此不再赘述。
本申请实施例还提供一种存储介质,所述存储介质中存储有计算机执行指令,所述计算机执行指令被处理器执行时用于实现如上所述的网络节点选择方法。
本发明实施例还提供一种计算机程序产品,当所述计算机程序产品在SMF网元 上运行时,使得SMF网元执行如上述的网络节点选择方法;或者,当所述计算机程序产品在AMF网元上运行时,使得AMF网元执行如上述的网络节点选择方法;或者,当所述计算机程序产品在终端设备上运行时,使得终端设备执行如上述的网络节点选择方法;或者,当所述计算机程序产品在PCF网元上运行时,使得PCF网元执行如上述的网络节点选择方法。
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。计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时,全部或部分地产生按照本申请实施例的流程或功能。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。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,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。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。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。
本文中的术语“多个”是指两个或两个以上。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。此外,本文中描述方式“……中的至少一个”表示所列出的各项之一或其任意组合,例如,“A、B和C中的至少一个”,可以表示:单独存在A,单独存在B,单独存在C,同时存在A和B,同时存在B和C,同时存在A和C,同时存在A、B和C这六种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系;在公式中,字符“/”,表示前后关联对象是一种“相除”的关系。
可以理解的是,在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分,并不用来限制本申请的实施例的范围。
可以理解的是,在本申请的实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请的实施例的实施过程构成任何限定。

Claims (36)

  1. 一种网络节点选择方法,其特征在于,包括:
    会话管理功能SMF网元获取接入网设备的传输能力信息;
    所述SMF网元根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,所述接入网设备是为所述终端设备提供服务的接入网设备。
  2. 根据权利要求1所述的方法,其特征在于,所述SMF网元获取接入网设备的传输能力信息,包括:
    所述SMF网元接收来自接入和移动管理功能AMF网元的所述接入网设备的传输能力信息;或者,
    所述SMF网元接收来自所述终端设备的所述接入网设备的传输能力信息。
  3. 根据权利要求2所述的方法,其特征在于,所述SMF网元接收来自接入和移动管理功能AMF网元的所述接入网设备的传输能力信息,包括:
    所述SMF网元接收来自所述AMF网元的分组数据单元PDU会话管理消息,所述PDU会话管理消息携带所述接入网设备的传输能力信息;或者,
    所述SMF网元接收来自所述AMF网元的N11消息,所述N11消息携带所述接入网设备的传输能力信息。
  4. 根据权利要求2所述的方法,其特征在于,所述SMF网元接收来自所述终端设备的所述接入网设备的传输能力信息,包括:
    所述SMF网元接收来自所述终端设备的非接入层NAS消息,所述NAS消息携带所述接入网设备的传输能力信息。
  5. 根据权利要求1~4任一项所述的方法,其特征在于,所述SMF网元根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,包括:
    所述SMF根据本地策略和所述接入网设备的传输能力信息,为所述终端设备选择UPF网元。
  6. 根据权利要求1~4任一项所述的方法,其特征在于,所述SMF网元根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,包括:
    所述SMF网元向策略控制功能PCF网元发送所述接入网设备的传输能力信息,所述接入网设备的传输能力信息用于所述PCF网元确定目标传输能力;
    所述SMF网元接收来自所述PCF网元的第一指示信息,所述第一指示信息用于指示所述目标传输能力;
    所述SMF网元根据所述目标传输能力,为所述终端设备选择UPF网元。
  7. 根据权利要求6所述的方法,其特征在于,所述SMF网元根据所述目标传输能力,为所述终端设备选择UPF网元,包括:
    所述SMF获取UPF网元的传输能力信息;
    所述SMF网元根据所述UPF网元的传输能力信息,为所述终端设备选择一个支持所述目标传输能力的UPF网元。
  8. 根据权利要求1~7任一项所述的方法,其特征在于,所述方法还包括:
    所述SMF网元根据所述接入网设备的传输能力信息,向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控 制消息;或者,
    所述SMF网元接收来自PCF网元的接入控制策略信息,并根据所述接入控制策略信息向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控制消息。
  9. 一种网络节点选择方法,其特征在于,包括:
    接入和移动管理功能AMF网元获取接入网设备的传输能力信息;
    所述AMF网元向会话管理功能SMF网元发送所述传输能力信息。
  10. 根据权利要求9所述的方法,其特征在于,所述方法还包含:
    所述AMF网元根据所述接入网设备的传输能力信息,选择所述SMF网元。
  11. 根据权利要求10所述的方法,其特征在于,所述AMF网元根据所述接入网设备的传输能力信息,选择所述SMF网元,包括:
    所述AMF网元向网络存储功能NRF网元发送所述接入网设备的传输能力信息,所述接入网设备的传输能力信息用于所述NRF网元确定至少一个目标SMF网元;
    所述AMF网元接收来自所述NRF网元的第三指示信息,所述第三指示信息用于指示所述至少一个目标SMF网元;
    所述AMF网元从所述至少一个目标SMF网元中确定所述SMF网元。
  12. 根据权利要求9~11任一项所述的方法,其特征在于,
    所述AMF网元向会话管理功能SMF网元发送所述传输能力信息,包括:
    所述AMF网元向所述SMF网元发送PDU会话管理消息,所述PDU会话管理消息携带PDU会话建立请求和所述接入网设备的传输能力信息,所述PDU会话建立请求用于请求为终端设备建立PDU会话,所述接入网设备是为所述终端设备提供服务的接入网设备。
  13. 根据权利要求9~12任一项所述的方法,其特征在于,所述AMF网元获取接入网设备的传输能力信息,包括:
    所述AMF网元接收来自所述接入网设备的所述接入网设备的传输能力信息;或者,
    所述AMF网元接收来自所述接入网设备的所述接入网设备的标识,并根据所述接入网设备的标识获取所述接入网设备的传输能力信息;或者,
    所述AMF网元获取所述接入网设备的传输层关联信息,并根据所述传输层关联信息获取所述接入网设备的传输能力信息;或者,
    所述AMF网元获取终端设备的位置信息,并根据所述位置信息获取所述接入网设备的传输能力信息,所述接入网设备是为所述终端设备提供服务的接入网设备。
  14. 根据权利要求9~12任一项所述的方法,其特征在于,所述AMF网元获取接入网设备的传输能力信息,包括:
    当所述接入网设备满足预设条件时,所述AMF网元获取所述接入网设备的传输能力信息。
  15. 一种网络节点选择方法,其特征在于,包括:
    终端设备接收接入网设备的传输能力信息;
    所述终端设备向会话管理功能SMF网元发送所述传输能力信息。
  16. 根据权利要求15所述的方法,其特征在于,所述终端设备接收接入网设备的传输能力信息,包括:
    所述终端设备接收来自所述接入网设备或者接入和移动管理功能AMF网元的所述传输能力信息。
  17. 根据权利要求15或16所述的方法,其特征在于,所述终端设备向会话管理功能SMF网元发送所述传输能力信息,包括:
    所述终端设备向所述SMF网元发送非接入层NAS消息,所述NAS消息携带所述传输能力信息。
  18. 一种网络节点选择装置,其特征在于,包括:
    处理单元,用于获取接入网设备的传输能力信息,根据所述接入网设备的传输能力信息,为终端设备选择用户面功能UPF网元,所述接入网设备是为所述终端设备提供服务的接入网设备。
  19. 根据权利要求18所述的装置,其特征在于,所述装置还包括:接收单元;
    所述处理单元,用于控制所述接收单元接收来自接入和移动管理功能AMF网元的所述接入网设备的传输能力信息;
    或者,
    所述处理单元,用于控制所述接收单元接收来自所述终端设备的所述接入网设备的传输能力信息。
  20. 根据权利要求19所述的装置,其特征在于,所述接入网设备的传输能力信息来自于所述AMF网元时,
    所述接收单元,用于接收来自所述AMF网元的分组数据单元PDU会话管理消息,所述PDU会话管理消息携带所述接入网设备的传输能力信息;
    或者,
    所述接收单元,用于接收来自所述AMF网元的N11消息,所述N11消息携带所述接入网设备的传输能力信息。
  21. 根据权利要求19所述的装置,其特征在于,所述接入网设备的传输能力信息来自于所述终端设备时,所述接收单元,用于接收来自所述终端设备的非接入层NAS消息,所述NAS消息携带所述接入网设备的传输能力信息。
  22. 根据权利要求18~21任一项所述装置,其特征在于,
    所述处理单元,用于根据本地策略和所述接入网设备的传输能力信息,为所述终端设备选择所述UPF网元。
  23. 根据权利要求18~21任一项所述的装置,其特征在于,还包括:
    发送单元,用于向策略控制功能PCF网元发送所述接入网设备的传输能力信息,所述接入网设备的传输能力信息用于所述PCF网元确定目标传输能力;
    接收单元,用于接收来自所述PCF网元的第一指示信息,所述第一指示信息用于指示所述目标传输能力;
    所述处理单元,用于根据所述目标传输能力,为所述终端设备选择UPF网元。
  24. 根据权利要求23所述的装置,其特征在于,
    所述处理单元,用于获取UPF网元的传输能力信息,根据所述UPF网元的传输 能力信息,为所述终端设备选择一个支持所述目标传输能力的UPF网元。
  25. 根据权利要求18~24任一项所述的装置,其特征在于,所述装置还包括:发送单元,
    所述发送单元,用于根据所述接入网设备的传输能力信息,向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控制消息;
    或者,
    接收单元,用于接收来自PCF网元的接入控制策略信息,并根据所述接入控制策略信息向所述接入网设备发送第二指示信息,所述第二指示信息用于指示所述接入网设备向所述终端设备发送接入控制消息。
  26. 一种网络节点选择装置,其特征在于,包括:
    处理单元,用于获取接入网设备的传输能力信息,所述传输能力信息包含至少一种传输能力;
    发送单元,用于向会话管理功能SMF网元发送所述传输能力信息。
  27. 根据权利要求26所述的装置,其特征在于,
    所述处理单元,还用于根据所述接入网设备的传输能力信息,选择所述SMF网元。
  28. 根据权利要求27所述的装置,其特征在于,所述装置还包括:接收单元,
    所述发送单元,用于向网络存储功能NRF网元发送所述接入网设备的传输能力信息,所述接入网设备的传输能力信息用于所述NRF网元确定至少一个目标SMF网元;
    所述接收单元,用于接收来自所述NRF网元的第三指示信息,所述第三指示信息用于指示所述至少一个目标SMF网元;
    所述处理单元,用于从所述至少一个目标SMF网元中确定所述SMF网元。
  29. 根据权利要求26~28任一项所述的装置,其特征在于,
    所述发送单元,用于向所述SMF网元发送PDU会话管理消息,所述PDU会话管理消息携带PDU会话建立请求和所述接入网设备的传输能力信息,所述PDU会话建立请求用于请求为终端设备建立PDU会话,所述接入网设备是为所述终端设备提供服务的接入网设备。
  30. 根据权利要求26~29任一项所述的装置,其特征在于,所述装置还包括:接收单元,
    所述接收单元,用于接收来自所述接入网设备的所述传输能力信息;或者,
    所述接收单元,用于接收来自所述接入网设备的所述接入网设备的标识,所述处理单元,用于根据所述接入网设备的标识获取所述接入网设备的传输能力信息;或者,
    所述处理单元,用于获取所述接入网设备的传输层关联信息,并根据所述传输层关联信息获取所述接入网设备的传输能力信息;或者,
    所述处理单元,用于获取终端设备的位置信息,并根据所述位置信息获取所述接入网设备的传输能力信息,所述接入网设备是为所述终端设备提供服务的接入网设。
  31. 根据权利要求26~29任一项所述的装置,其特征在于,
    所述处理单元,在所述接入网设备满足预设条件时,获取所述接入网设备的传输能力信息。
  32. 一种网络节点选择装置,其特征在于,包括:
    接收单元,用于接收接入网设备的传输能力信息;
    发送单元,用于向会话管理功能SMF网元发送所述传输能力信息。
  33. 根据权利要求32所述的装置,其特征在于,
    所述接收单元,用于接收来自所述接入网设备或者接入和移动管理功能AMF网元的所述传输能力信息。
  34. 根据权利要求32或33所述的装置,其特征在于,
    所述发送单元,用于向所述SMF网元发送非接入层NAS消息,所述NAS消息携带所述传输能力信息。
  35. 一种计算机可读存储介质,其特征在于,用于存储计算机程序或指令,当所述计算机程序或指令在电子设备上运行时,使得所述电子设备执行如权利要求1~8任一项所述的方法,或者,如权利要求9~14任一项所述的方法;或者,如权利要求15~17任一项所述的方法。
  36. 一种计算机程序产品,其特征在于,当所述计算机程序产品在电子设备上运行时,使得所述电子设备执行如权利要求1~8任一项所述的方法,或者,如权利要求9~14任一项所述的方法;或者,如权利要求15~17任一项所述的方法。
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