WO2022028170A1 - 一种数据传输方法、相关网络节点和存储介质 - Google Patents

一种数据传输方法、相关网络节点和存储介质 Download PDF

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Publication number
WO2022028170A1
WO2022028170A1 PCT/CN2021/104167 CN2021104167W WO2022028170A1 WO 2022028170 A1 WO2022028170 A1 WO 2022028170A1 CN 2021104167 W CN2021104167 W CN 2021104167W WO 2022028170 A1 WO2022028170 A1 WO 2022028170A1
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Prior art keywords
information
network node
pfd
application identifier
triplet
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PCT/CN2021/104167
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English (en)
French (fr)
Inventor
李爱华
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中国移动通信有限公司研究院
中国移动通信集团有限公司
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Priority to US18/040,970 priority Critical patent/US20230308933A1/en
Publication of WO2022028170A1 publication Critical patent/WO2022028170A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H04W28/0263—Traffic management, e.g. flow control or congestion control per individual bearer or channel involving mapping traffic to individual bearers or channels, e.g. traffic flow template [TFT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403—Architecture for metering, charging or billing
    • H04L12/1407—Policy-and-charging control [PCC] architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66—Policy and charging system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/12—Flow control between communication endpoints using signalling between network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing

Definitions

  • the present disclosure relates to the field of mobile communication technologies, and in particular, to a data transmission method, a related network node and a storage medium.
  • the Network Data Analysis Function can only analyze the Internet Protocol (IP, Internet Protocol) triplet corresponding to a service, but cannot determine its Application ID (Application ID).
  • the application function (AF, Application function) provides the Application ID and Packet Flow Description (PFD, Packet Flow Description) information to the Network Exposure Function (NEF, Network Exposure Function), and the NEF sends it to the session management function ( SMF, Session Management Function), SMF further sends packet detection rules (PDR, Packet Detection Rule) to the user plane function (UPF, User Plane Function) for Application ID detection and reporting.
  • PPD Packet Flow Description
  • SMF Session Management Function
  • PDR Packet Detection Rule
  • AF may frequently add or change IP triples, and after the change, it fails to notify the NEF and deliver it to the UPF through SMF, thus affecting the accurate analysis of data packets, as well as related policies and control and charging (PCC , Policy Control and Charging) implementation.
  • PCC Policy Control and Charging
  • Embodiments of the present disclosure provide a data transmission method, a related network node, and a storage medium.
  • an embodiment of the present disclosure provides a data transmission method, the method comprising:
  • the first network node identifies the application identifier corresponding to the second flow information of the data packet flow
  • the first triplet information of the data packet flow is changed.
  • the second PFD information is sent to the third network node; the second PFD information includes the second triplet information and the application identifier.
  • the first network node identifies the application identifier corresponding to the second flow information of the data packet flow, including:
  • the first network node determines an application identifier corresponding to the second flow information of the data packet flow according to a pre-obtained service classification model or service feature.
  • the method further includes:
  • the first network node receives the service classification model or the service feature sent by the second network node; the service classification model and the service feature are determined based on the first PFD information and the first traffic information corresponding to each application identifier , the first PFD information includes the first triplet information.
  • the first network node is a UPF network node, or an NWDAF network node, or a network node jointly set up by the UPF and the NWDAF.
  • an embodiment of the present disclosure further provides a data transmission method, the method comprising:
  • the third network node receives the second PFD information sent by the first network node;
  • the second PFD information includes the second triplet information and the application identifier;
  • the second PFD information is sent to the UPF node through the SMF.
  • the method further includes: updating the first PFD information corresponding to the application identifier to the second PFD information.
  • an embodiment of the present disclosure further provides a data transmission method, the method comprising:
  • the UPF node receives the second PFD information sent by the third network node through the SMF; the second PFD information includes the second triplet information and the application identifier.
  • the method further includes: collecting second flow information of a data packet flow corresponding to the second triplet information, determining an application identifier of the data packet flow, and executing the The PCC policy corresponding to the second triplet information and the application identifier.
  • an embodiment of the present disclosure further provides a network node, where the network node is a first network node; the network node includes: an identifying unit, a determining unit, and a first sending unit; wherein,
  • the identifying unit configured to identify the application identifier corresponding to the second flow information of the data packet flow
  • the determining unit is configured to determine whether the triplet information corresponding to the data packet flow is transformed
  • the first sending unit is configured for the determining unit to determine that the triplet information corresponding to the application identifier is converted from the first triplet information to the second triplet information, or is the newly added second triplet information.
  • the second PFD information of the data packet flow is sent to the third network node; the second PFD information includes the second triplet information and the application identifier.
  • the identifying unit is configured to determine an application identifier corresponding to the second flow information of the data packet flow according to a pre-obtained service classification model or service feature.
  • the network node further includes a first receiving unit configured to receive the service classification model or the service feature sent by the second network node; the service classification model and the service classification model The service feature is determined based on first PFD information and first traffic information corresponding to each application identifier, where the first PFD information includes the first triplet information.
  • the network node is a UPF network node, or an NWDAF network node, or a network node jointly set up by the UPF and the NWDAF.
  • an embodiment of the present disclosure further provides a network node, where the network node is a third network node; the third network node includes a second receiving unit and a second sending unit; wherein,
  • the second receiving unit is configured to receive the second PFD information sent by the first network node; the second PFD information includes the second triplet information and the application identifier;
  • the second sending unit is configured to send the second PFD information to the UPF node through the SMF.
  • the network node further includes an update unit configured to update the first PFD information corresponding to the application identifier to the second PFD information.
  • an embodiment of the present disclosure further provides a UPF node, where the UPF node includes: a third receiving unit configured to receive, via the SMF, second PFD information sent by a third network node; the second PFD information includes The second triplet information and application identification.
  • the UPF node further includes an execution unit, configured to collect second flow information of the data packet flow corresponding to the second triplet information, and determine the application of the data packet flow identification, and execute the PCC policy corresponding to the second triplet information and the application identification.
  • an embodiment of the present disclosure further provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the first aspect, the second aspect or the third aspect of the embodiment of the present disclosure. steps of the method described.
  • an embodiment of the present disclosure further provides a network node, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the present disclosure when executing the program Examples include the steps of the method described in the first aspect, the second aspect or the third aspect.
  • the data transmission method, the relevant network node, and the storage medium provided by the embodiments of the present disclosure include: the first network node identifies an application identifier corresponding to the second flow information of the data packet flow; When the triplet information is converted from the first triplet information to the second triplet information, or is the newly added second triplet information, the second PFD information of the data packet flow is sent to the third network node; the second PFD information includes the second triplet information and the application identifier; the third node receives the second PFD information sent by the first network node; sends the second PFD information through SMF to the UPF node.
  • the second triplet information when it is detected that the triplet information of the data packet flow changes or is newly added triplet information (that is, the second triplet information), the second triplet information will be included
  • the information and the second PFD information identified by the application are updated to the third network node, and sent to the UPF through the SMF, so that the UPF can obtain the newly added triple information or the transformed triple information in time, so as to realize accurate analysis of the data. Enforcement of packets and related PCC policies.
  • FIG. 1 is a schematic flowchart 1 of a data transmission method according to an embodiment of the present disclosure
  • FIG. 2 is a second schematic flowchart of a data transmission method according to an embodiment of the present disclosure
  • FIG. 3 is a third schematic flowchart of a data transmission method according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a system architecture to which a data transmission method according to an embodiment of the present disclosure is applied;
  • FIG. 5 is a schematic diagram 1 of the composition structure of a network node according to an embodiment of the present disclosure
  • FIG. 6 is a second schematic diagram of the composition and structure of a network node according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of the composition and structure of a UPF node according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a hardware structure of a network node according to an embodiment of the present disclosure.
  • FIG. 1 is a schematic flowchart 1 of a data transmission method according to an embodiment of the present disclosure; as shown in FIG. 1 , the method includes:
  • Step 101 the first network node identifies the application identifier corresponding to the second flow information of the data packet flow;
  • Step 102 When it is determined that the triplet information corresponding to the data packet flow is transformed from the first triplet information to the second triplet information, or is the newly added second triplet information, convert the data packet to the second triplet information.
  • the second PFD information of the flow is sent to the third network node; the second PFD information includes the second triplet information and the application identifier.
  • the first network node may be a network device with an NWDAF function. In some examples, the first network node may be an independent network device. In other embodiments, the first network node may be a co-location of the NWDAF and the UPF. Then, the first network node in the embodiment is a UPF network node, or an NWDAF network node, or a network node jointly set up by UPF and NWDAF.
  • the third network node may be one or more of an NEF node, a Packet Flow Description Function (PFDF, Packet Flow Description Function) node, a UDR node, and a UDM node.
  • PFDF Packet Flow Description Function
  • the first network node can identify the application identifier (Application ID) corresponding to the second flow information of the data packet flow, that is, the first network node can identify which service the data packet flow corresponds to.
  • Application ID application identifier
  • identifying the application identifier corresponding to the second flow information of the data packet flow by the first network node includes: the first network node according to a pre-obtained service classification model (for example, it can be recorded as Application Classifier) or service feature (for example, it can be recorded as Traffic Signature or Traffic Feature) to determine the application identifier corresponding to the second flow information of the data packet flow.
  • a pre-obtained service classification model for example, it can be recorded as Application Classifier
  • service feature for example, it can be recorded as Traffic Signature or Traffic Feature
  • the method further includes: receiving, by the first network node, the service classification model or the service feature sent by the second network node; the service classification model and the service feature are based on the corresponding application identifiers.
  • the first PFD information and the first traffic information are determined, and the first PFD information includes the first triplet information.
  • the second network node can determine the service classification model or service feature based on the first PFD information and the first traffic information corresponding to each application identifier, and then send the service classification model or service feature to the first network node, or
  • the first network node may also obtain the service classification model or service characteristics through other transmission methods.
  • the second network node may be a network device with NWDAF function.
  • the second network node may be a separate network device.
  • the second network node may determine a service classification model or service feature based on the first PFD information and the first traffic information corresponding to each application identifier.
  • the PFD information (including the first PFD information, the second PFD information, etc.) in this embodiment corresponds to each application, and it can be understood that the PFD information (including the first PFD information, the second PFD information, etc.) corresponds to the same application logo.
  • the PFD information may include at least one of the following information: IP triplet (eg IP address, port, transport layer protocol, etc.), Uniform Resource Locator (URL, Uniform Resource Locator) (eg host name), domain name (For example, Fully Qualified Domain Name (FQDN, Fully Qualified Domain Name)) and application ID, etc.
  • the service feature includes the commonality of the features of the data packet flow corresponding to the same application identifier, or it can be said that the service feature can identify the corresponding unique application identifier.
  • the service features may include mapping relationships between multiple sets of features and application identifiers; then, after obtaining the data packet flow, the first network node obtains the data packet flow feature, and compares the obtained feature with each of the service features. The mapping relationship is compared to obtain the application identifier corresponding to the feature.
  • the business classification model may be obtained by performing multiple trainings of a machine learning algorithm.
  • the input data of the service classification model can be traffic information or PFD information, and the output data is the application identifier.
  • the first network node may identify the application identifier corresponding to the second flow information of the data packet flow based on the obtained service classification model or the feature map set.
  • the first network node can store the triplet information corresponding to the data packet flow; if the triplet information of the data packet flow is found to be the same as the If the stored triplet information does not match, it can be determined that the triplet information of the packet flow has been transformed. For example, the stored triplet information is recorded as the first triplet information, and the detected triplet information is the first triplet information. If the triplet information is two, it can be determined that the triplet information of the data packet stream is transformed from the first triplet information to the second triplet information.
  • the related triplet information is not stored, but the triplet information of the data packet flow (that is, the newly added second triplet information) is detected, then the detected triplet information As the newly added second triple information.
  • the above-mentioned “determination” may be equivalent to derive or determine.
  • the first network node When it is determined (or detected) that the triplet information is transformed, or the newly added triplet information is determined (or detected), the first network node will include the second triplet information and the application identifier.
  • the PFD information is sent to the third network node, and the third network node sends the information to the UPF via the SMF.
  • FIG. 2 is a second schematic flowchart of a data transmission method according to an embodiment of the present disclosure; as shown in FIG. 2 , the method includes:
  • Step 201 the third network node receives the second PFD information sent by the first network node; the second PFD information includes the second triplet information and the application identifier;
  • Step 202 Send the second PFD information to the UPF node through the SMF.
  • the third network node may be one or more of an NEF node, a PFDF node, a UDR node, and a UDM node.
  • the method further includes: updating the first PFD information corresponding to the application identifier to the second PFD information.
  • the PFD information corresponding to the application identifier is stored in the third network node.
  • the third network node Before receiving the second PFD information, the third network node stores the first PFD information, and the first PFD information includes the first triplet information. After receiving the second PFD information, the second PFD information is stored, and the first PFD information is deleted.
  • FIG. 3 is a third schematic flowchart of a data transmission method according to an embodiment of the present disclosure; as shown in FIG. 3 , the method includes:
  • Step 301 The UPF node receives the second PFD information sent by the third network node via the SMF; the second PFD information includes the second triplet information and the application identifier.
  • the method further includes:
  • Step 302 Collect the second flow information of the data packet flow corresponding to the second triplet information, determine the application identifier of the data packet flow, and execute the PCC corresponding to the second triplet information and the application identifier Strategy.
  • FIG. 4 is a schematic diagram of a system architecture of an application of the data transmission method according to an embodiment of the present disclosure; as shown in FIG. 4 , the system may include: Unified Data Repository (UDR, Unified Data Repository), NEF, SMF, UPF, and NWDAF nodes (ie the second network node in the previous embodiment) and so on.
  • UDR Unified Data Repository
  • NEF Unified Data Repository
  • SMF Serving Mobility Management Function
  • UPF User Planet Control Function
  • NWDAF nodes ie the second network node in the previous embodiment
  • the NEF can store and read the PFD information from the UDR; the NWDAF node can obtain the first PFD information from the NEF, and so on.
  • the following steps may be included:
  • Step 1 The NWDAF node 1 may determine the service classification model or service feature corresponding to the Application ID based on the first PFD information corresponding to the Application ID and the corresponding first traffic information.
  • the first PFD information may also be referred to as historical PFD information, and the first traffic information may also be referred to as historical traffic information.
  • the NWDAF node 1 may obtain the first PFD information from the NEF and obtain the first traffic information from the UPF.
  • Step 2 NWDAF node 1 sends the service classification model or service feature of the Application ID to NWDAF node 2.
  • the NWDAF node 2 and the UPF can be co-located.
  • Step 3 The NWDAF node 2 determines its corresponding Application ID and IP triplet information according to the real-time data packet flow, which is referred to as the first IP triplet information here.
  • Step 4 As step 3 continues, NWDAF node 2 finds that the data packet flow corresponds to the new IP triplet information (referred to as the second IP triplet information here) in the process of the data packet flow, and then The PFD information (may be recorded as the second PFD information, the second PFD information includes the second IP triplet information and the Application ID) is sent to the NEF.
  • the PFD information may be recorded as the second PFD information, the second PFD information includes the second IP triplet information and the Application ID
  • Step 5 The NEF updates the PFD information corresponding to the Application ID to the second PFD information, and distributes the updated second PFD information to the relevant UPF through the SMF;
  • Step 6 Based on the second PFD information, when the UPF parses that the data packet flow corresponding to the second IP triplet appears, determines the Application ID corresponding to the data packet flow, executes the corresponding PCC policy, and reports it to the SMF.
  • the second triplet information when it is detected that the triplet information of the data packet flow changes or is newly added triplet information (that is, the second triplet information), the second triplet information will be included
  • the information and the second PFD information of the application identifier are updated to the NEF, and sent to the UPF through the SMF, so that the UPF can obtain the newly added triplet information or the transformed triplet information in time, so as to realize accurate parsing of data packets and Enforcement of relevant PCC policies.
  • FIG. 5 is a schematic diagram 1 of the composition structure of a network node according to an embodiment of the disclosure; as shown in FIG. 5 , the network node includes: an identification unit 41, a determination unit 42, and a first sending unit 43; wherein,
  • the identifying unit 41 is configured to identify the application identifier corresponding to the second flow information of the data packet flow;
  • the determining unit 42 is configured to determine whether the triplet information corresponding to the data packet flow is transformed
  • the first sending unit 43 is configured for the determining unit 42 to determine that the triplet information corresponding to the application identifier is converted from the first triplet information to the second triplet information, or is newly added.
  • the second triplet information is used, the second PFD information of the data packet flow is sent to the third network node; the second PFD information includes the second triplet information and the application identifier.
  • the identifying unit 41 is configured to determine an application identifier corresponding to the second flow information of the data packet flow according to a pre-obtained service classification model or service feature.
  • the network node further includes a first receiving unit 44 configured to receive the service classification model or the service feature sent by the second network node; the service classification model and the service classification model The service feature is determined based on the first PFD information and the first traffic information corresponding to each application identifier.
  • the network node is a UPF network node, or an NWDAF network node, or a network node jointly set up by UPF and NWDAF.
  • the network node is the first network node in the foregoing embodiments.
  • the identification unit 41 and the determination unit 42 in the network node can be used in practical applications by a central processing unit (CPU, Central Processing Unit), a digital signal processor (DSP, Digital Signal Processor), a microcomputer in the network node.
  • a control unit MCU, Microcontroller Unit
  • FPGA Field-Programmable Gate Array
  • the first sending unit 43 and the first receiving unit 44 in the network node can be implemented through a communication model in practical applications. Group (including: basic communication suite, operating system, communication modules, standardized interfaces and protocols, etc.) and implementation of transceiver antennas.
  • the network nodes provided in the above-mentioned embodiments perform data transmission, only the division of the above-mentioned program modules is used as an example.
  • the internal structure of the network node is divided into different program modules to complete all or part of the processing described above.
  • the network nodes provided in the above embodiments belong to the same concept as the data transmission method embodiments, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.
  • FIG. 6 is a second schematic diagram of the composition and structure of a network node according to an embodiment of the present disclosure; as shown in FIG. 6 , the network node includes a second receiving unit 51 and a second sending unit 52; wherein,
  • the second receiving unit 51 is configured to receive the second PFD information sent by the first network node; the second PFD information includes the second triplet information and the application identifier;
  • the second sending unit 52 is configured to send the second PFD information to the UPF node through SMF.
  • the network node further includes an update unit 53 configured to update the first PFD information corresponding to the application identifier to the second PFD information.
  • the network node is the third network node in the foregoing embodiments.
  • the update unit 53 in the network node can be implemented by a CPU, DSP, MCU or FPGA in the network node in practical applications; the second receiving unit 51 and the second sending unit 52 in the network node, in practice.
  • the communication module including: basic communication suite, operating system, communication module, standardized interface and protocol, etc.
  • the transceiver antenna can be used.
  • the network nodes provided in the above-mentioned embodiments perform data transmission, only the division of the above-mentioned program modules is used as an example.
  • the internal structure of the network node is divided into different program modules to complete all or part of the processing described above.
  • the network nodes provided in the above embodiments belong to the same concept as the data transmission method embodiments, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.
  • FIG. 7 is a schematic diagram of the composition and structure of a UPF node according to an embodiment of the present disclosure; as shown in FIG. 7 , the UPF node includes: a third receiving unit 61 configured to receive the second PFD information sent by the third network node through the SMF; The second PFD information includes second triplet information and an application identifier.
  • the UPF node further includes an execution unit 62, configured to collect second flow information of the data packet flow corresponding to the second triplet information, and determine the flow rate of the data packet flow.
  • the application identifier is used to execute the PCC policy corresponding to the second triplet information and the application identifier.
  • the execution unit 62 in the UPF node may be implemented by a CPU, DSP, MCU or FPGA in the UPF node in practical applications; the third receiving unit 61 in the UPF node, in practical applications
  • the communication module including: basic communication suite, operating system, communication module, standardized interface and protocol, etc.
  • the transceiver antenna can be used.
  • FIG. 8 is a schematic diagram of the hardware structure of a network node according to an embodiment of the disclosure.
  • the network node includes a memory 72, a processor 71, and a computer program stored in the memory 72 and running on the processor 71, When the processor 71 executes the program, the steps of the data transmission method applied to the first network node, the third network node or the UPF node in the embodiments of the present disclosure are implemented.
  • the network node further includes one or more network interfaces 73 .
  • the various components in the network nodes are coupled together by a bus system 74 .
  • the bus system 74 is used to implement the connection communication between these components.
  • the bus system 74 also includes a power bus, a control bus and a status signal bus.
  • the various buses are designated as bus system 74 in FIG. 8 .
  • the memory 72 may be either volatile memory or non-volatile memory, and may include both volatile and non-volatile memory.
  • the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-only memory) Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory , CD-ROM, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface memory can be disk memory or tape memory.
  • RAM Random Access Memory
  • SRAM Static Random Access Memory
  • SSRAM Synchronous Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Type Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Link Dynamic Random Access Memory
  • DRRAM Direct Rambus Random Access Memory
  • the memory 72 described in the embodiments of the present disclosure is intended to include, but not be limited to, these and any other suitable types of memory.
  • the methods disclosed in the above embodiments of the present disclosure may be applied to the processor 71, or implemented by the processor 71.
  • the processor 71 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by a hardware integrated logic circuit in the processor 71 or an instruction in the form of software.
  • the above-mentioned processor 71 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the processor 71 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the methods disclosed in combination with the embodiments of the present disclosure can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 72, and the processor 71 reads the information in the memory 72, and completes the steps of the foregoing method in combination with its hardware.
  • the network node may be implemented by one or more Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, Microprocessor (Microprocessor), or other electronic components implemented for performing the aforementioned method.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal Processing Unit
  • PLD Programmable Logic Device
  • CPLD Complex Programmable Logic Device
  • FPGA general-purpose processor
  • controller MCU
  • Microprocessor Microprocessor
  • an embodiment of the present disclosure further provides a computer-readable storage medium, such as a memory 72 including a computer program, and the computer program can be executed by the processor 71 of the network node to complete the steps of the foregoing method.
  • the computer-readable storage medium can be memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM; it can also be various devices including one or any combination of the above memories.
  • Embodiments of the present disclosure further provide a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the embodiment of the present disclosure is applied to the first network node, the third network node, or the UPF node. the steps of the data transmission method.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling, or direct coupling, or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical or other forms. of.
  • the unit described above as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present disclosure may be all integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above integration
  • the unit can be implemented either in the form of hardware or in the form of hardware plus software functional units.
  • the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, execute It includes the steps of the above method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic disk or an optical disk and other media that can store program codes.
  • the above-mentioned integrated units of the present disclosure are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.
  • the technical solutions of the embodiments of the present disclosure essentially or the parts that make contributions to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes several instructions for A computer device (which may be a personal computer, a server, or a network device, etc.) is caused to execute all or part of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic disk or an optical disk and other mediums that can store program codes.

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Abstract

本公开实施例公开了一种数据传输方法、相关网络节点和存储介质。所述方法包括：第一网络节点识别数据包流的第二流量信息对应的应用标识；确定对应于所述数据包流的所述三元组信息由第一三元组信息变换至第二三元组信息，或者为新增的第二三元组信息时，将所述数据包流的第二数据包流描述(PFD)信息发送至第三网络节点；所述第二PFD信息包括所述第二三元组信息和所述应用标识。

Description

一种数据传输方法、相关网络节点和存储介质
相关申请的交叉引用
本公开基于申请号为202010790977.3、申请日为2020年08月07日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此以引入方式并入本公开。
技术领域
本公开涉及移动通信技术领域，具体涉及一种数据传输方法、相关网络节点和存储介质。
背景技术
网络数据分析功能(NWDAF，Network Data Analytics Function)只能分析出互联网协议(IP，Internet Protocol)三元组对应到一个业务，但无法判定其应用标识(Application ID)。
在处理流程中，应用功能(AF，Application function)向网络开放功能(NEF，Network Exposure Function)提供Application ID、数据包流描述(PFD，Packet Flow Description)信息，由NEF下发给会话管理功能(SMF，Session Management Function)，SMF进一步下发报文检测规则(PDR，Packet Detection Rule)到用户面功能(UPF，User Plane Function)中，用于Application ID的检测和上报。
但是，AF可能较为频繁地新增或改动IP三元组，改动后未能通知到NEF并通过SMF下发到UPF，因而影响到数据报文的精确解析，以及相关策略和控制计费(PCC，Policy Control and Charging)的执行。
发明内容
本公开实施例提供一种数据传输方法、相关网络节点和存储介质。
本公开实施例的技术方案是这样实现的：
第一方面，本公开实施例提供了一种数据传输方法，所述方法包括：
第一网络节点识别数据包流的第二流量信息对应的应用标识；
确定对应于所述数据包流的三元组信息由第一三元组信息变换至第二三元组信息，或者为新增的第二三元组信息时，将所述数据包流的第二PFD信息发送至第三网络节点；所述第二PFD信息包括所述第二三元组信息和所述应用标识。
在本公开的一些可选实施例中，第一网络节点识别数据包流的第二流量信息对应的应用标识，包括：
所述第一网络节点根据预先获得的业务分类模型或业务特征确定所述数据包流的第二流量信息对应的应用标识。
在本公开的一些可选实施例中，所述方法还包括：
所述第一网络节点接收第二网络节点发送的所述业务分类模型或所述业务特征；所述业务分类模型和所述业务特征基于各应用标识对应的第一PFD信息和第一流量信息确定，所述第一PFD信息包括所述第一三元组信息。
在本公开的一些可选实施例中，所述第一网络节点为UPF网络节点，或者，NWDAF网络节点，或者，UPF和NWDAF合设的网络节点。
第二方面，本公开实施例还提供了一种数据传输方法，所述方法包括：
第三网络节点接收第一网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识；
将所述第二PFD信息通过SMF发送至UPF节点。
在本公开的一些可选实施例中，所述方法还包括：将所述应用标识对 应的第一PFD信息更新为所述第二PFD信息。
第三方面，本公开实施例还提供了一种数据传输方法，所述方法包括：
UPF节点经SMF接收第三网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识。
在本公开的一些可选实施例中，所述方法还包括：收集所述第二三元组信息对应的数据包流的第二流量信息，确定所述数据包流的应用标识，执行所述第二三元组信息和所述应用标识对应的PCC策略。
第四方面，本公开实施例还提供了一种网络节点，所述网络节点为第一网络节点；所述网络节点包括：识别单元、确定单元和第一发送单元；其中，
所述识别单元，配置为识别数据包流的第二流量信息对应的应用标识；
所述确定单元，配置为确定对应于所述数据包流的所述三元组信息是否发生变换；
所述第一发送单元，配置为所述确定单元确定对应于所述应用标识的所述三元组信息由第一三元组信息变换至第二三元组信息，或者为新增的第二三元组信息时，将所述数据包流的第二PFD信息发送至第三网络节点；所述第二PFD信息包括所述第二三元组信息和所述应用标识。
在本公开的一些可选实施例中，所述识别单元，配置为根据预先获得的业务分类模型或业务特征确定所述数据包流的第二流量信息对应的应用标识。
在本公开的一些可选实施例中，所述网络节点还包括第一接收单元，配置为接收第二网络节点发送的所述业务分类模型或所述业务特征；所述业务分类模型和所述业务特征基于各应用标识对应的第一PFD信息和第一流量信息确定，所述第一PFD信息包括所述第一三元组信息。
在本公开的一些可选实施例中，所述网络节点为UPF网络节点，或者， NWDAF网络节点，或者，UPF和NWDAF合设的网络节点。
第五方面，本公开实施例还提供了一种网络节点，所述网络节点为第三网络节点；所述第三网络节点包括第二接收单元和第二发送单元；其中，
所述第二接收单元，配置为接收第一网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识；
所述第二发送单元，配置为将所述第二PFD信息通过SMF发送至UPF节点。
在本公开的一些可选实施例中，所述网络节点还包括更新单元，配置为将所述应用标识对应的第一PFD信息更新为所述第二PFD信息。
第六方面，本公开实施例还提供了一种UPF节点，所述UPF节点包括：第三接收单元，配置为经SMF接收第三网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识。
在本公开的一些可选实施例中，所述UPF节点还包括执行单元，配置为收集所述第二三元组信息对应的数据包流的第二流量信息，确定所述数据包流的应用标识，执行所述第二三元组信息和所述应用标识对应的PCC策略。
第七方面，本公开实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现本公开实施例第一方面、第二方面或第三方面所述方法的步骤。
第八方面，本公开实施例还提供了一种网络节点，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现本公开实施例第一方面、第二方面或第三方面所述方法的步骤。
本公开实施例提供的数据传输方法、相关网络节点和存储介质，所述方法包括：第一网络节点识别数据包流的第二流量信息对应的应用标识； 确定对应于所述数据包流的所述三元组信息由第一三元组信息变换至第二三元组信息，或者为新增的第二三元组信息时，将所述数据包流的第二PFD信息发送至第三网络节点；所述第二PFD信息包括所述第二三元组信息和所述应用标识；所述第三节点接收第一网络节点发送的第二PFD信息；将所述第二PFD信息通过SMF发送至UPF节点。采用本公开实施例的技术方案，在检测到数据包流的三元组信息发生变化或者为新增的三元组信息(即第二三元组信息)时，将包含有第二三元组信息和应用标识的第二PFD信息更新到第三网络节点，并通过SMF发送至UPF，从而使UPF能够及时获得新增的三元组信息或变换的三元组信息，以实现精确的解析数据报文以及相关PCC策略的执行。
附图说明
图1为本公开实施例的数据传输方法的流程示意图一；
图2为本公开实施例的数据传输方法的流程示意图二；
图3为本公开实施例的数据传输方法的流程示意图三；
图4为本公开实施例的数据传输方法应用的系统架构示意图；
图5为本公开实施例的网络节点的组成结构示意图一；
图6为本公开实施例的网络节点的组成结构示意图二；
图7为本公开实施例的UPF节点的组成结构示意图；
图8为本公开实施例的网络节点的硬件结构示意图。
具体实施方式
下面结合附图及具体实施例对本公开作进一步详细的说明。
本公开实施例提供了一种数据传输方法。图1为本公开实施例的数据传输方法的流程示意图一；如图1所示，所述方法包括：
步骤101：第一网络节点识别数据包流的第二流量信息对应的应用标 识；
步骤102：确定对应于所述数据包流的三元组信息由第一三元组信息变换至第二三元组信息，或者为新增的第二三元组信息时，将所述数据包流的第二PFD信息发送至第三网络节点；所述第二PFD信息包括所述第二三元组信息和所述应用标识。
本实施例中，第一网络节点可以是一种具有NWDAF功能的网络设备。一些示例中，第一网络节点可以是独立的网络设备。在另一些实施例中，第一网络节点可以是NWDAF与UPF合设。则实施例中的所述第一网络节点为UPF网络节点，或者为NWDAF网络节点，或者为UPF和NWDAF合设的网络节点。
本实施例中，所述第三网络节点可以是NEF节点、分组流描述功能(PFDF，Packet Flow Description Function)节点、UDR节点、UDM节点中的一个或者多个。
本实施例中，第一网络节点能够识别出数据包流的第二流量信息对应的应用标识(Application ID)，也即第一网络节点能够识别出数据包流对应的哪个业务。
在本公开的一些可选实施例中，第一网络节点识别数据包流的第二流量信息对应的应用标识，包括：所述第一网络节点根据预先获得的业务分类模型(例如可记为Application Classifier)或业务特征(例如可记为Traffic Signature或Traffic Feature)确定所述数据包流的第二流量信息对应的应用标识。
可选地，所述方法还包括：所述第一网络节点接收第二网络节点发送的所述业务分类模型或所述业务特征；所述业务分类模型和所述业务特征基于各应用标识对应的第一PFD信息和第一流量信息确定，所述第一PFD信息包括所述第一三元组信息。
本实施例中，第二网络节点能够基于各应用标识对应的第一PFD信息和第一流量信息确定出业务分类模型或业务特征，进而将业务分类模型或业务特征发送至第一网络节点，或者第一网络节点也可通过其他的传输方式获得业务分类模型或业务特征。
示例性的，第二网络节点可以是一种具有NWDAF功能的网络设备。一些示例中，第二网络节点可以是独立的网络设备。
第二网络节点可以基于各应用标识对应的第一PFD信息和第一流量信息确定出业务分类模型或业务特征。其中，本实施例中的PFD信息(包括第一PFD信息、第二PFD信息等)对应于各应用，可以理解，PFD信息(包括第一PFD信息、第二PFD信息等)对应于同一个应用标识。示例性的，PFD信息可包括以下信息的至少之一：IP三元组(例如IP地址、端口、传输层协议等)、统一资源定位符(URL，Uniform Resource Locator)(例如主机名称)、域名(例如全限定域名(FQDN，Fully Qualified Domain Name))和应用标识等。
在一些实施例中，业务特征中包含了对应于同一应用标识的数据包流的特征的共性，或者也可以说，业务特征能够识别出对应的唯一的应用标识。示例性的，业务特征中可包括多组特征与应用标识的映射关系；则第一网络节点在获得数据包流后，获得该数据包流的特征，并将获得的特征与业务特征中的各映射关系进行比对，得到与该特征对应的应用标识。
在另一些实施例中，业务分类模型可通过机器学习算法进行多次训练而获得。业务分类模型的输入数据可以是流量信息或PFD信息，输出数据为应用标识。
基于此，第一网络节点可基于获得的业务分类模型或所述特征映射集合，识别出数据包流的第二流量信息对应的应用标识。
本实施例中，第一网络节点在识别出各数据流的三元组信息以及对应 的应用标识后，可存储数据包流对应的三元组信息；若发现数据包流的三元组信息与存储的三元组信息不匹配，则可确定该数据包流的三元组信息发生了变换，例如存储的三元组信息记为第一三元组信息，检测到的三元组信息为第二三元组信息，则可确定所述数据包流的所述三元组信息由第一三元组信息变换至第二三元组信息。又或者，对于该数据包流并未存储相关的三元组信息，但检测到数据包流的三元组信息(即新增的第二三元组信息)，则检测到的三元组信息作为新增的第二三元组信息。其中，上述“确定”可相当于获得(derive)或决定(Determine)。
确定(或检测到)三元组信息发生变换，或者确定(或检测到)新增的三元组信息的情况下，第一网络节点将包含有第二三元组信息和应用标识的第二PFD信息发送至第三网络节点，由第三网络节点经SMF发送给UPF。
基于前述实施例，本公开实施例还提供了一种数据传输方法。图2为本公开实施例的数据传输方法的流程示意图二；如图2所示，所述方法包括：
步骤201：第三网络节点接收第一网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识；
步骤202：将所述第二PFD信息通过SMF发送至UPF节点。
本实施例中，所述第三网络节点可以是NEF节点、PFDF节点、UDR节点、UDM节点中的一个或者多个。
在本公开的一些可选实施例中，所述方法还包括：将所述应用标识对应的第一PFD信息更新为所述第二PFD信息。
可以理解，第三网络节点中存储有应用标识对应的PFD信息。在接收到第二PFD信息之前，第三网络节点中存储的是第一PFD信息，所述第一PFD信息中包括第一三元组信息。在接收到第二PFD信息后，存储第二PFD 信息，并删除第一PFD信息。
基于前述实施例，本公开实施例还提供了一种数据传输方法。图3为本公开实施例的数据传输方法的流程示意图三；如图3所示，所述方法包括：
步骤301：UPF节点经SMF接收第三网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识。
在本公开的一些可选实施例中，所述方法还包括：
步骤302：收集所述第二三元组信息对应的数据包流的第二流量信息，确定所述数据包流的应用标识，执行所述第二三元组信息和所述应用标识对应的PCC策略。
下面结合一个具体的实例对本公开实施例的数据传输方法进行说明。
图4为本公开实施例的数据传输方法应用的系统架构示意图；如图4所示，系统中可包括：统一数据存储库(UDR，Unified Data Repository)、NEF、SMF、UPF以及NWDAF节点(即前述实施例中的第二网络节点)等等。假设NEF为前述实施例中的第三网络节点，其中，NEF可从UDR中进行PFD信息的存储以及读取；NWDAF节点可从NEF中获得第一PFD信息等。具体可包括以下步骤：
步骤1：NWDAF节点1可基于Application ID对应的第一PFD信息以及对应的第一流量信息，确定Application ID对应的业务分类模型或业务特征。
其中，第一PFD信息也可称为历史PFD信息，第一流量信息也可称为历史流量信息。
其中，NWDAF节点1可从NEF中获得第一PFD信息，从UPF中获得第一流量信息。
步骤2：NWDAF节点1将Application ID的业务分类模型或业务特征 发送至NWDAF节点2。
其中，NWDAF节点2可与UPF可合设。
步骤3：NWDAF节点2根据实时的数据包流确定其对应的Application ID以及IP三元组信息，这里记为第一IP三元组信息。
步骤4：随着步骤3不断进行，NWDAF节点2在对数据包流的过程中，发现该数据包流对应新的IP三元组信息(这里记为第二IP三元组信息)，则将PFD信息(可记为第二PFD信息，第二PFD信息包括第二IP三元组信息和Application ID)发送给NEF。
步骤5：NEF更新Application ID所对应的PFD信息为第二PFD信息，并通过SMF，将更新后的第二PFD信息通过SMF分发给相关的UPF；
步骤6：基于第二PFD信息，当UPF解析到对应于该第二IP三元组的数据包流出现，判定出数据包流对应的Application ID，执行相应的PCC策略，并上报给SMF。
采用本公开实施例的技术方案，在检测到数据包流的三元组信息发生变化或者为新增的三元组信息(即第二三元组信息)时，将包含有第二三元组信息和应用标识的第二PFD信息更新到NEF，并通过SMF发送至UPF，从而使UPF能够及时获得新增的三元组信息或变换的三元组信息，以实现精确的解析数据报文以及相关PCC策略的执行。
本公开实施例还提供了一种网络节点，所述网络节点为前述实施例中的第一网络节点。图5为本公开实施例的网络节点的组成结构示意图一；如图5所示，所述网络节点包括：识别单元41、确定单元42和第一发送单元43；其中，
所述识别单元41，配置为识别数据包流的第二流量信息对应的应用标识；
所述确定单元42，配置为确定对应于所述数据包流的所述三元组信息 是否发生变换；
所述第一发送单元43，配置为所述确定单元42确定对应于所述应用标识的所述三元组信息由第一三元组信息变换至第二三元组信息，或者为新增的第二三元组信息时，将所述数据包流的第二PFD信息发送至第三网络节点；所述第二PFD信息包括所述第二三元组信息和所述应用标识。
在本公开的一些可选实施例中，所述识别单元41，配置为根据预先获得的业务分类模型或业务特征确定所述数据包流的第二流量信息对应的应用标识。
在本公开的一些可选实施例中，所述网络节点还包括第一接收单元44，配置为接收第二网络节点发送的所述业务分类模型或所述业务特征；所述业务分类模型和所述业务特征基于各应用标识对应的第一PFD信息和第一流量信息确定。
在本公开的一些可选实施例中，所述网络节点为UPF网络节点，或者为NWDAF网络节点，或者为UPF和NWDAF合设的网络节点。
本公开实施例中，所述网络节点为前述实施例中的第一网络节点。所述网络节点中的识别单元41和确定单元42，在实际应用中均可由所述网络节点中的中央处理器(CPU，Central Processing Unit)、数字信号处理器(DSP，Digital Signal Processor)、微控制单元(MCU，Microcontroller Unit)或可编程门阵列(FPGA，Field－Programmable Gate Array)实现；所述网络节点中的第一发送单元43和第一接收单元44，在实际应用中可通过通信模组(包含：基础通信套件、操作系统、通信模块、标准化接口和协议等)及收发天线实现。
需要说明的是：上述实施例提供的网络节点在进行数据传输时，仅以上述各程序模块的划分进行举例说明，实际应用中，可以根据需要而将上述处理分配由不同的程序模块完成，即将网络节点的内部结构划分成不同 的程序模块，以完成以上描述的全部或者部分处理。另外，上述实施例提供的网络节点与数据传输方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
本公开实施例还提供了一种网络节点，所述网络节点为第三网络节点。图6为本公开实施例的网络节点的组成结构示意图二；如图6所示，所述网络节点包括第二接收单元51和第二发送单元52；其中，
所述第二接收单元51，配置为接收第一网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识；
所述第二发送单元52，配置为将所述第二PFD信息通过SMF发送至UPF节点。
在本公开的一些可选实施例中，所述网络节点还包括更新单元53，配置为将所述应用标识对应的第一PFD信息更新为所述第二PFD信息。
本公开实施例中，所述网络节点为前述实施例中的第三网络节点。所述网络节点中的更新单元53，在实际应用中可由所述网络节点中的CPU、DSP、MCU或FPGA实现；所述网络节点中的第二接收单元51和第二发送单元52，在实际应用中可通过通信模组(包含：基础通信套件、操作系统、通信模块、标准化接口和协议等)及收发天线实现。
需要说明的是：上述实施例提供的网络节点在进行数据传输时，仅以上述各程序模块的划分进行举例说明，实际应用中，可以根据需要而将上述处理分配由不同的程序模块完成，即将网络节点的内部结构划分成不同的程序模块，以完成以上描述的全部或者部分处理。另外，上述实施例提供的网络节点与数据传输方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
本公开实施例还提供了一种UPF节点。图7为本公开实施例的UPF节点的组成结构示意图；如图7所示，所述UPF节点包括：第三接收单元61， 配置为经SMF接收第三网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识。
在本公开的一些可选实施例中，所述UPF节点还包括执行单元62，配置为收集所述第二三元组信息对应的数据包流的第二流量信息，确定所述数据包流的应用标识，执行所述第二三元组信息和所述应用标识对应的PCC策略。
本公开实施例中，所述UPF节点中的执行单元62，在实际应用中可由所述UPF节点中的CPU、DSP、MCU或FPGA实现；所述UPF节点中的第三接收单元61，在实际应用中可通过通信模组(包含：基础通信套件、操作系统、通信模块、标准化接口和协议等)及收发天线实现。
需要说明的是：上述实施例提供的UPF节点在进行数据传输时，仅以上述各程序模块的划分进行举例说明，实际应用中，可以根据需要而将上述处理分配由不同的程序模块完成，即将UPF节点的内部结构划分成不同的程序模块，以完成以上描述的全部或者部分处理。另外，上述实施例提供的UPF节点与数据传输方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
本公开实施例还提供了一种网络节点，所述网络节点具体可以是前述实施例中的第一网络节点、第三网络节点或UPF节点。图8为本公开实施例的网络节点的硬件结构示意图，如图8所示，所述网络节点包括存储器72、处理器71及存储在存储器72上并可在处理器71上运行的计算机程序，所述处理器71执行所述程序时实现本公开实施例中应用于第一网络节点、第三网络节点或UPF节点中的所述数据传输方法的步骤。
可选地，网络节点中还包括一个或多个网络接口73。网络节点中的各个组件通过总线系统74耦合在一起。可理解，总线系统74用于实现这些组件之间的连接通信。总线系统74除包括数据总线之外，还包括电源总线、 控制总线和状态信号总线。但是为了清楚说明起见，在图8中将各种总线都标为总线系统74。
可以理解，存储器72可以是易失性存储器或非易失性存储器，也可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM，ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)；磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM，Random Access Memory)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(SRAM，Static Random Access Memory)、同步静态随机存取存储器(SSRAM，Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM，Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM，Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM，Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM，Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM，SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM，Direct Rambus Random Access Memory)。本公开实施例描述的存储器72旨在包括但不限于这些和任意其它适合类型的存储器。
上述本公开实施例揭示的方法可以应用于处理器71中，或者由处理器 71实现。处理器71可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器71中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器71可以是通用处理器、DSP，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。处理器71可以实现或者执行本公开实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本公开实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于存储器72，处理器71读取存储器72中的信息，结合其硬件完成前述方法的步骤。
在示例性实施例中，网络节点可以被一个或多个应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、FPGA、通用处理器、控制器、MCU、微处理器(Microprocessor)、或其他电子元件实现，用于执行前述方法。
在示例性实施例中，本公开实施例还提供了一种计算机可读存储介质，例如包括计算机程序的存储器72，上述计算机程序可由网络节点的处理器71执行，以完成前述方法所述步骤。计算机可读存储介质可以是FRAM、ROM、PROM、EPROM、EEPROM、Flash Memory、磁表面存储器、光盘、或CD-ROM等存储器；也可以是包括上述存储器之一或任意组合的各种设备。
本公开实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现本公开实施例中应用于第一网络节点、第三网络节点或UPF节点中的所述数据传输方法的步骤。
本申请所提供的几个方法实施例中所揭露的方法，在不冲突的情况下 可以任意组合，得到新的方法实施例。
本申请所提供的几个产品实施例中所揭露的特征，在不冲突的情况下可以任意组合，得到新的产品实施例。
本申请所提供的几个方法或设备实施例中所揭露的特征，在不冲突的情况下可以任意组合，得到新的方法实施例或设备实施例。
在本申请所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。以上所描述的设备实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，如：多个单元或组件可以结合，或可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的各组成部分相互之间的耦合、或直接耦合、或通信连接可以是通过一些接口，设备或单元的间接耦合或通信连接，可以是电性的、机械的或其它形式的。
上述作为分离部件说明的单元可以是、或也可以不是物理上分开的，作为单元显示的部件可以是、或也可以不是物理单元，即可以位于一个地方，也可以分布到多个网络单元上；可以根据实际的需要选择其中的部分或全部单元来实现本实施例方案的目的。
另外，在本公开各实施例中的各功能单元可以全部集成在一个处理单元中，也可以是各单元分别单独作为一个单元，也可以两个或两个以上单元集成在一个单元中；上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：移动存储设备、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
或者，本公开上述集成的单元如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本公开各个实施例所述方法的全部或部分。而前述的存储介质包括：移动存储设备、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (18)

  1. 一种数据传输方法，所述方法包括：
    第一网络节点识别数据包流的第二流量信息对应的应用标识；
    确定对应于所述数据包流的三元组信息由第一三元组信息变换至第二三元组信息，或者为新增的第二三元组信息时，将所述数据包流的第二数据包流描述PFD信息发送至第三网络节点；所述第二PFD信息包括所述第二三元组信息和所述应用标识。
  2. 根据权利要求1所述的方法，其中，第一网络节点识别数据包流的第二流量信息对应的应用标识，包括：
    所述第一网络节点根据预先获得的业务分类模型或业务特征确定所述数据包流的第二流量信息对应的应用标识。
  3. 根据权利要求1-2任一项所述的方法，其中，所述方法还包括：
    所述第一网络节点接收第二网络节点发送的所述业务分类模型或所述业务特征；所述业务分类模型和所述业务特征基于各应用标识对应的第一PFD信息和第一流量信息确定，所述第一PFD信息包括所述第一三元组信息。
  4. 根据权利要求1所述的方法，其中，所述第一网络节点为用户面功能UPF网络节点，或者，网络数据分析功能NWDAF网络节点，或者，UPF和NWDAF合设的网络节点。
  5. 一种数据传输方法，所述方法包括：
    第三网络节点接收第一网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识；
    将所述第二PFD信息通过SMF发送至UPF节点。
  6. 根据权利要求5所述的方法，其中，所述方法还包括：
    将所述应用标识对应的第一PFD信息更新为所述第二PFD信息。
  7. 一种数据传输方法，所述方法包括：
    UPF节点经SMF接收第三网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识。
  8. 根据权利要求7所述的方法，其中，所述方法还包括：
    收集所述第二三元组信息对应的数据包流的第二流量信息，确定所述数据包流的应用标识，执行所述第二三元组信息和所述应用标识对应的策略和控制计费PCC策略。
  9. 一种网络节点，所述网络节点为第一网络节点；所述网络节点包括：识别单元、确定单元和第一发送单元；其中，
    所述识别单元，配置为识别数据包流的第二流量信息对应的应用标识；
    所述确定单元，配置为确定对应于所述数据包流的所述三元组信息是否发生变换；
    所述第一发送单元，配置为所述确定单元确定对应于所述应用标识的所述三元组信息由第一三元组信息变换至第二三元组信息，或者为新增的第二三元组信息时，将所述数据包流的第二PFD信息发送至第三网络节点；所述第二PFD信息包括所述第二三元组信息和所述应用标识。
  10. 根据权利要求9所述的网络节点，其中，所述识别单元，配置为根据预先获得的业务分类模型或业务特征确定所述数据包流的第二流量信息对应的应用标识。
  11. 根据权利要求9或10所述的网络节点，其中，所述网络节点还包括第一接收单元，配置为接收第二网络节点发送的所述业务分类模型或所述业务特征；所述业务分类模型和所述业务特征基于各应用标识对应的第一PFD信息和第一流量信息确定，所述第一PFD信息包括所述第一三元组信息。
  12. 根据权利要求9所述的网络节点，其中，所述网络节点为UPF网 络节点，或者，NWDAF网络节点，或者，UPF和NWDAF合设的网络节点。
  13. 一种网络节点，所述网络节点为第三网络节点；所述第三网络节点包括第二接收单元和第二发送单元；其中，
    所述第二接收单元，配置为接收第一网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识；
    所述第二发送单元，配置为将所述第二PFD信息通过SMF发送至UPF节点。
  14. 根据权利要求13所述的网络节点，其中，所述网络节点还包括更新单元，配置为将所述应用标识对应的第一PFD信息更新为所述第二PFD信息。
  15. 一种UPF节点，所述UPF节点包括：第三接收单元，配置为经SMF接收第三网络节点发送的第二PFD信息；所述第二PFD信息包括第二三元组信息和应用标识。
  16. 根据权利要求15所述的UPF节点，其中，所述UPF节点还包括执行单元，配置为收集所述第二三元组信息对应的数据包流的第二流量信息，确定所述数据包流的应用标识，执行所述第二三元组信息和所述应用标识对应的PCC策略。
  17. 一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现权利要求1至4任一项所述方法的步骤；或者，该程序被处理器执行时实现权利要求5或6所述方法的步骤；或者，该程序被处理器执行时实现权利要求7或8所述方法的步骤。
  18. 一种网络节点，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现权利要求1至4任一项所述方法的步骤；或者，所述处理器执行所述程序时实现权利要求5 或6所述方法的步骤；或者，所述处理器执行所述程序时实现权利要求7或8所述方法的步骤。
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