WO2022160134A1 - 无线网络的数据分析方法及装置、通信设备和存储介质 - Google Patents

无线网络的数据分析方法及装置、通信设备和存储介质 Download PDF

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WO2022160134A1
WO2022160134A1 PCT/CN2021/073994 CN2021073994W WO2022160134A1 WO 2022160134 A1 WO2022160134 A1 WO 2022160134A1 CN 2021073994 W CN2021073994 W CN 2021073994W WO 2022160134 A1 WO2022160134 A1 WO 2022160134A1
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level
analysis
nwdaf
network element
data
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PCT/CN2021/073994
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English (en)
French (fr)
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牟勤
洪伟
赵中原
熊可欣
陈玉强
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北京小米移动软件有限公司
北京邮电大学
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Priority to CN202180000350.6A priority Critical patent/CN115211151B/zh
Priority to PCT/CN2021/073994 priority patent/WO2022160134A1/zh
Publication of WO2022160134A1 publication Critical patent/WO2022160134A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management

Definitions

  • the embodiments of the present disclosure relate to the field of wireless communication, but are not limited to the field of wireless communication, and in particular, relate to a data analysis method and apparatus for a wireless network, a communication device, and a storage medium.
  • the present disclosure provides a data analysis method and apparatus for a wireless network, a communication device and a storage medium.
  • a data analysis method for a wireless network is provided.
  • the method is applied to a first-level network data analysis function NWDAF (Network Data Analytics Function) network element, including:
  • a first-level analysis report is sent to the NWDAF user, wherein the NWDAF user is used to adjust the network parameters of the first-type analysis according to the first-level analysis report.
  • a data analysis method for a wireless network is provided.
  • the method is applied to a second-level NWDAF network element, including:
  • the first-level NWDAF network element is used to send the first-level analysis report to the NWDAF user according to the second-level analysis report; the NWDAF user is used to adjust the first-level analysis according to the first-level analysis report. network parameters.
  • an apparatus for analyzing data of a wireless network the apparatus being applied to a first-level NWDAF network element, including:
  • a first acquisition module configured to acquire, according to the first type of analysis to be performed, a second-level analysis report sent by a second-level NWDAF network element that has a corresponding relationship with the network slice to which the target user equipment UE belongs;
  • the first sending module is configured to send a first-level analysis report to the NWDAF user according to the second-level analysis report, wherein the NWDAF user is used to adjust the first-level analysis report according to the first-level analysis report.
  • Network parameters are configured to send a first-level analysis report to the NWDAF user according to the second-level analysis report, wherein the NWDAF user is used to adjust the first-level analysis report according to the first-level analysis report.
  • a data analysis apparatus for a wireless network the apparatus being applied to a second-level NWDAF network element, including:
  • the fourth sending module is configured to send a second-level analysis report to the first-level NWDAF network element according to the first-type analysis to be performed; wherein, the second-level NWDAF network element and the target corresponding to the first-type analysis
  • the network slice to which the UE belongs has a corresponding relationship; the first-level NWDAF network element is used to send the first-level analysis report to the NWDAF user according to the second-level analysis report; the NWDAF user is used to send the first-level analysis report according to the first-level analysis report Adjust the network parameters of the first type of analysis.
  • a communication device includes at least a processor and a memory for storing executable instructions that can be executed on the processor, wherein:
  • the executable instructions execute the steps in any of the above-mentioned data analysis methods for wireless networks.
  • a non-transitory computer-readable storage medium wherein computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are implemented when executed by a processor Steps in any of the above-mentioned data analysis methods for wireless networks.
  • data analysis is performed through two-level NWDAF network elements, and the second-level NWDAF network elements have a corresponding relationship with network slices.
  • the first-level NWDAF network element is more suitable for the scenario where the mobile terminal switches between different service areas, which reduces the NWDAF service terminal caused by the terminal switching service area, thereby improving the user experience.
  • FIG. 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment
  • FIG. 2 is a flowchart 1 of a data analysis method according to an exemplary embodiment
  • FIG. 3 is a second flowchart of a data analysis method according to an exemplary embodiment
  • FIG. 4 is a third flowchart of a data analysis method according to an exemplary embodiment
  • FIG. 5 is a fourth flowchart of a data analysis method according to an exemplary embodiment
  • FIG. 6 is a flowchart 5 of a data analysis method according to an exemplary embodiment
  • FIG. 7 is a schematic diagram of the architecture of a data analysis system according to an exemplary embodiment
  • FIG. 8 is a flowchart 6 of a data analysis method according to an exemplary embodiment
  • FIG. 9 is a schematic flowchart of network data collection and association in a data analysis method according to an exemplary embodiment
  • FIG. 10 is a schematic diagram of a data association identifier in a data analysis method according to an exemplary embodiment
  • FIG. 11 is a schematic diagram of a protocol and interface for registration and subscription in a data analysis method according to an exemplary embodiment
  • FIG. 12 is a schematic diagram of a protocol and interface for data collection and association in a data analysis method according to an exemplary embodiment
  • FIG. 13 is a schematic diagram of a protocol and interface for self-analysis and result feedback in a data analysis method according to an exemplary embodiment
  • FIG. 14 is a structural block diagram 1 of a data analysis apparatus according to an exemplary embodiment
  • 15 is a second structural block diagram of a data analysis apparatus according to an exemplary embodiment
  • FIG. 16 is a schematic structural diagram 1 of a communication device according to an exemplary embodiment
  • Fig. 17 is a second schematic structural diagram of a communication device according to an exemplary embodiment.
  • first, second, third, etc. may be used in embodiments of the present disclosure to describe various pieces of information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.
  • the words "if” and “if” as used herein can be interpreted as "at the time of” or "when” or "in response to determining.”
  • an embodiment of the present disclosure takes an application scenario of access control as an example for illustrative description.
  • FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
  • the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: several terminals 11 and several base stations 12 .
  • the terminal 11 may be a device that provides voice and/or data connectivity to the user.
  • the terminal 11 may communicate with one or more core networks via a radio access network (RAN), and the terminal 11 may be an IoT terminal such as a sensor device, a mobile phone (or "cellular" phone) and a
  • RAN radio access network
  • the computer of the IoT terminal for example, may be a fixed, portable, pocket, hand-held, built-in computer or a vehicle-mounted device.
  • a station For example, a station (Station, STA), a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a mobile station (mobile), a remote station (remote station), an access point, a remote terminal ( remote terminal), access terminal, user terminal, user agent, user device, or user equipment (terminal).
  • the terminal 11 may also be a device of an unmanned aerial vehicle.
  • the terminal 11 may also be a vehicle-mounted device, for example, a trip computer with a wireless communication function, or a wireless terminal connected to an external trip computer.
  • the terminal 11 may also be a roadside device, for example, a street light, a signal light, or other roadside devices with a wireless communication function.
  • the base station 12 may be a network-side device in a wireless communication system.
  • the wireless communication system may be a fourth generation mobile communication (the 4th generation mobile communication, 4G) system, also known as a long term evolution (Long Term Evolution, LTE) system; or, the wireless communication system may also be a 5G system, Also known as new radio (NR) system or 5G NR system.
  • the wireless communication system may also be a next-generation system of the 5G system.
  • the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network, a new generation of radio access network).
  • the base station 12 may be an evolved base station (eNB) used in the 4G system.
  • the base station 12 may also be a base station (gNB) that adopts a centralized distributed architecture in a 5G system.
  • eNB evolved base station
  • gNB base station
  • the base station 12 adopts a centralized distributed architecture it usually includes a centralized unit (central unit, CU) and at least two distributed units (distributed unit, DU).
  • the centralized unit is provided with a protocol stack of a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control Protocol (Radio Link Control, RLC) layer, and a Media Access Control (Media Access Control, MAC) layer; distribution A physical (Physical, PHY) layer protocol stack is set in the unit, and the specific implementation manner of the base station 12 is not limited in this embodiment of the present disclosure.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control Protocol
  • MAC Media Access Control
  • distribution A physical (Physical, PHY) layer protocol stack is set in the unit, and the specific implementation manner of the base station 12 is not limited in this embodiment of the present disclosure.
  • a wireless connection can be established between the base station 12 and the terminal 11 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fourth generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth generation mobile communication network technology (5G) standard, such as
  • the wireless air interface is a new air interface; alternatively, the wireless air interface may also be a wireless air interface based on a 5G next-generation mobile communication network technology standard.
  • an E2E (End to End, end-to-end) connection may also be established between the terminals 11 .
  • V2V vehicle to vehicle, vehicle-to-vehicle
  • V2I vehicle to Infrastructure, vehicle-to-roadside equipment
  • V2P vehicle to pedestrian, vehicle-to-person communication in vehicle-to-everything (V2X) communication etc. scene.
  • the above wireless communication system may further include a network management device 13 .
  • the network management device 13 may be a core network device in a wireless communication system, for example, the network management device 13 may be a mobility management entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC). MME).
  • the network management device may also be other core network devices, such as a serving gateway (Serving GateWay, SGW), a public data network gateway (Public Data Network GateWay, PGW), a policy and charging rules functional unit (Policy and Charging Rules) Function, PCRF) or home subscriber server (Home Subscriber Server, HSS), etc.
  • the implementation form of the network management device 13 is not limited in this embodiment of the present disclosure.
  • NWDAF network elements are introduced to assist network slice load analysis to optimize network slice selection and 5G QoS decision-making.
  • 5G intelligent network architecture and capabilities, as well as the data analysis results that NWDAF can export in different scenarios, need to be standardized, and NWDAF functions need to be supplemented and enhanced.
  • the goal is to realize a layered intelligent network architecture, provide platform-based capabilities, meet the requirements of large operators and network deployment, and enable vertical business expansion.
  • an embodiment of the present disclosure provides a data analysis method for a wireless network.
  • the method is applied to a first-level NWDAF network element, including:
  • Step S101 obtaining a second-level analysis report sent by a second-level NWDAF network element that has a corresponding relationship with the network slice to which the target UE belongs, according to the first-type analysis to be performed;
  • Step S102 Send a first-level analysis report to an NWDAF user according to the second-level analysis report, where the NWDAF user is used to adjust the network parameters of the first-level analysis according to the first-level analysis report.
  • NWDAF is a data-aware analysis network element that automatically senses and analyzes the network based on network data, and participates in network planning, construction, operation and maintenance, network optimization, and the entire life cycle of operation, making the network easy to maintain and control. Efficient use of network resources to improve user service experience. NWDAF can collect raw data from NF (Network Function, network function), AF (Application Function, application layer function) and OAM (Operation Administration and Maintenance, operation and maintenance management), conduct intelligent analysis on the raw data, and feed back the analysis results to NF, AF, and OAM, etc., are used to optimize networks and services.
  • NF Network Function, network function
  • AF Application Function, application layer function
  • OAM Opera Administration and Maintenance, operation and maintenance management
  • embodiments of the present disclosure utilize NWDAF to implement efficient data collection and data association methods.
  • a two-level hierarchical NWDAF architecture is deployed, and wireless network data collection and association, analysis subscription, and result feedback are carried out on this architecture.
  • the first-level NWDAF network element serves the shared network elements of multiple network slices
  • the second-level NWDAF network element serves the exclusive network element of a single network slice
  • multiple second-level NWDAF network elements can serve Exclusive network capabilities for the same network slice.
  • network slicing is an on-demand networking method that allows operators to separate multiple virtual end-to-end networks on a unified infrastructure.
  • Each network slice extends from the radio access network to the bearer network to the core Logical isolation is performed online to adapt to various types of services.
  • the NWDAF user that is, the NWDAF service consumer
  • the NWDAF service consumer is used to put forward data analysis requirements, that is, the above-mentioned first type of analysis needs to be performed on the target UE
  • the first-level NWDAF network element and the second-level NWDAF network element are Collect and analyze data according to the first type of analysis to be performed, and generate a corresponding analysis report.
  • NWDAF users can adjust the corresponding network parameters according to the analysis report, thereby realizing network optimization.
  • the NWDAF network element subscribed by the NWDAF user is the first-level NWDAF network element. Therefore, the first-level NWDAF network element sends the first-level analysis report to the NWDAF user.
  • the first-level NWDAF network element subscribes to the second-level NWDAF network element. Therefore, the second-level NWDAF network element sends the second-level analysis report obtained by the analysis to the first-level NWDAF network element, and the first-level NWDAF network element sends the analysis report to the first-level NWDAF network element.
  • the meta is further processed to generate the final first level analysis report.
  • the second-level NWDAF network element since the second-level NWDAF network element is an NWDAF network element having a corresponding relationship with a network slice, it has the exclusiveness of network slice data.
  • the second-level NWDAF network element collects the exclusive data in the network slice to which it belongs, performs corresponding analysis and processing, and generates the corresponding second-level analysis report. In this process, data exchange between network slices is not required.
  • the first-level NWDAF network element can collect and analyze data shared among multiple network slices.
  • the second-level network elements are divided according to network slices.
  • the NWDAF network element is more suitable for the scenario where the mobile terminal switches between different service areas, which reduces the interruption of the NWDAF service caused by the terminal switching service area, thereby improving the user experience.
  • the embodiments of the present disclosure are divided into network slices, and each second-level NWDAF network element is responsible for the exclusive NF of one network slice, thereby reducing the number of NWDAF deployments in multiple service areas and reducing the number of deployments. cost and improve efficiency.
  • the second level NWDAF network element serves an independent network slice and is used to analyze at least one network function NF exclusive to the network slice.
  • the second-level NWDAF network element is only used to serve independent network slices, and may be used to collect, analyze and process data of one or more NFs in the served independent network slices.
  • each independent network slice may correspond to one or more second-level NWDAF network elements.
  • the first type of analysis to be performed it can be processed with a second-level NWDAF network element that supports the analysis.
  • the second-level NWDAF network elements are isolated on network slices, which improves data security and service independence between network slices and reduces data security risks.
  • the second-level NWDAF network element includes at least one of the following:
  • the second-level NWDAF network element may collect data for analysis and processing, that is, perform the above-mentioned first-type analysis on the collected data to obtain a corresponding second-level analysis report.
  • data interaction can also be performed between the second-level NWDAF network elements, that is, the auxiliary NWDAF network element also belongs to the second-level NWDAF network element, and is used to assist other second-level network elements in data analysis.
  • the first type of network element is configured to collect data corresponding to the first type of analysis, and perform the first type of analysis according to the data corresponding to the first type of analysis;
  • the second type of network element is used to collect the data corresponding to the first type of analysis and the data provided by the auxiliary NWDAF network element, and perform the first type of analysis.
  • the auxiliary NWDAF network element is used to collect the second type of analysis. Analyze the corresponding data, and perform the second type of analysis according to the data corresponding to the second type of analysis, to obtain the second-level analysis report; wherein, the second-type analysis is the association of the first-type analysis analyze.
  • the second type of network element may receive the analysis report sent by the auxiliary NWDAF network element.
  • the analysis report sent by the auxiliary NWDAF network element may be an analysis report obtained by performing a second type of analysis different from the first type of analysis.
  • the analysis report may be used to assist the second type of network element to perform the first type of analysis, thereby obtaining a second-level analysis report that can be sent to the first type of network element.
  • the above-mentioned auxiliary NWDAF network element assists the second-level NWDAF network element to perform the first type of analysis through the data obtained by performing the second type of analysis.
  • the second-level NWDAF network element makes an analysis report with the help of the auxiliary NWDAF network element.
  • the first type of network element is used for analysis, and for the relevant data of the target UE in different NFs or between different network slices, the above-mentioned second type of network element can be used for analysis. Perform analysis to perform comprehensive analysis of data between different NFs or different network slices.
  • An embodiment of the present disclosure provides a data analysis method, as shown in FIG. 3 , the method includes:
  • Step S201 based on the first type of analysis, obtain shared data to be analyzed from a shared network element
  • Step S202 Send the first-level analysis report to the NWDAF user according to the shared data and the second-level analysis report.
  • the first-level NWDAF network element is used to perform data analysis on the shared network element, so data may be obtained from the shared network element according to the first type of analysis to be performed, and the data may be shared data.
  • the first NWDAF network element also needs to obtain the analysis report sent by the second-level NWDAF network element, that is, the second-level NWDAF network element (one or more) of each second-level NWDAF network element (one or more) analyzes the exclusive data of their respective network slices. analysis report.
  • the first-level NWDAF network element can obtain a complete first-level analysis report for the first-level analysis to be performed according to the shared data and the second-level analysis report, and report it to the NWDAF user to meet the analysis requirements.
  • the shared network element includes at least one of the following:
  • AF refers to various services at the application layer, which may be internal applications of operators, or may be provided by third parties, such as video services, game services, and so on.
  • Shared NFs are various network functions shared among network slices.
  • OAM is the operation, maintenance and management function of the network. It is implemented according to the actual needs of the operator's network operation. It is used to complete the analysis, prediction, planning and configuration of the daily network and services, as well as operations such as service testing and fault management.
  • NEF is a network open function, located between the core network and external third-party application functions, and is responsible for managing open network data, including functions such as external application QoS customization capability opening, mobility status event subscription, and AF request distribution. External applications need to access the internal data of the core network through NEF.
  • the second-level NWDAF network element is configured to acquire exclusive NF data, and send the second-level analysis report to the first-level NWDAF network element according to the exclusive NF data.
  • the second-level NWDAF network element since the second-level NWDAF network element serves only one network slice, the second-level NWDAF network element is used to acquire exclusive NF data in the network slice, and generate a corresponding second-level analysis report.
  • the second-level NWDAF network element is subscribed by the first-level NWDAF network element, so after the second-level analysis report is sent to the first-level NWDAF network element, the first-level NWDAF network element performs further processing.
  • the exclusive NF data and the shared data obtained by the first-level NWDAF network element from the shared network element carry a data association identifier, and the data association identifier is used to identify each data and the target The association relationship of the UE.
  • the service data of the same user equipment may include various shared data and exclusive NF data. Therefore, when performing the same analysis, it is necessary to associate the service data corresponding to the user equipment, so as to facilitate obtaining an overall analysis result. Therefore, the shared data and the exclusive NF data corresponding to the first type of analysis to be performed above have a data association identifier for associating with the target UE.
  • the first-level NWDAF network element can perform unified analysis and processing on the data associated with the target UE according to the collected shared data and the second-level analysis report on the exclusive NF data reported by the second-level NWDAF network element, and generate corresponding The first level analysis report.
  • the data association identifier includes at least one of the following:
  • IP Internet Protocol, network protocol
  • IP quintuple timestamp
  • SUPI Subscribescription Permanent Identifier, user unique permanent identity mark
  • DNN Data Network Name, data network name
  • S-NSSAI Single Network Slice Selection Assistance Information, unique identifier of network slice
  • wireless access network user equipment NG interface interface between access network and 5G core network
  • application protocol identifier identifier
  • AN Access Network, access network
  • NWDAF network elements can collect data from each shared data network element or exclusive data network element. The data of the same user is often distributed on different network elements. Correlate the collected data.
  • network elements that provide data include but are not limited to SMF (Session Management Function, session management function), UPF (User plane Function, user plane function), AMF (Access and Mobility Management Function, access and mobility functions) sexuality management function), PCF (Policy Control function, policy control function), AF (Application Function, application layer function) and OAM (Operation Administration and Maintenance, operation and maintenance management), etc.
  • SMF is a session management function network element, and SMF data mainly includes session information
  • UPF is a user plane function network element, and UPF data mainly includes flow information
  • AMF is an access and mobility management function network element, and AMF data mainly includes user location.
  • PCF is the policy control function network element, and the PCF data mainly contains policy information
  • AF is the application layer function network element, and the AF data mainly includes service information
  • OAM is the operation, maintenance and management network element, and the OAM data from the RAN side mainly includes wireless channels. information.
  • the data of each network element is associated with the data association identifier, and the IP address of the target UE; IP quintuple; timestamp; SUPI; DNN; S-NSSAI; wireless access network user equipment NG Interface application protocol identification; one type of information in the AN tunnel information can be used for association, or two or more types of information can be used for association.
  • IP address and time stamp to associate
  • IP quintuple for management
  • SPUI to associate with time stamp, and so on.
  • SMF data and UPF data can be associated with the IP address and timestamp of the target UE
  • UPF data and AF data can be associated with IP quintuple and timestamp
  • SMF data and AMF data can be associated with SUPI and timestamp
  • SMF data and PCF data can be associated with SUPI, DNN, S-NSSAI or the IP address of the target UE;
  • AMF data and OAM data can be associated with RAN UE NGAP ID and timestamp
  • UPF data and OAM data can be associated with AN tunnel information and timestamp
  • SMF data and AF data can be associated with application ID, IP filter information and timestamp.
  • the IP quintuple is the source IP address, source port, destination IP address, destination port and transport layer protocol; SUPI is the unique permanent identity mark of the user in the 5G network; DNN is the data network name; S-NSSAI is the unique network slice Identifier; RAN UE NGAP ID is the radio access network user equipment NG interface application protocol identifier, RAN UE NGAP ID is unique in the NG-RAN node; AN tunnel information includes endpoint IP address and GTP tunnel endpoint identifier.
  • the second-level NWDAF network element is further configured to receive the desensitized exclusive NF data sent by the auxiliary NWDAF network element, and the auxiliary NWDAF network element is configured to desensitize the acquired exclusive NF data process, and send the desensitized exclusive NF data to the second-level NWDAF network element.
  • the second-level NWDAF network element may also need the assistance of the auxiliary NWDAF network element to perform data analysis. Therefore, the second-level NWDAF network element can receive the exclusive NF data sent by the auxiliary NWDAF network element.
  • data desensitization processing is required, for example, to remove sensitive information in the exclusive NF data, or to perform appropriate encryption processing, etc.
  • the second-level NWDAF network element can perform comprehensive processing in combination with the exclusive NF data collected by itself to obtain a corresponding second-level analysis report.
  • An embodiment of the present disclosure also provides a data analysis method, as shown in FIG. 4 , the method is applied to the first-level NWDAF network element, including:
  • Step S301 receiving the first request of the NWDAF user
  • Step S302 Determine a second-level NWDAF network element for acquiring the second-level analysis report according to the first request.
  • the NWDAF user subscribes to the first-level NWDAF network element, and the first-level NWDAF network element obtains corresponding shared data based on the analysis requirements of the NWDAF user, and provides corresponding analysis reports to the NWDAF user.
  • the first-level NWDAF network element can also determine the second-level NWDAF network element that needs to perform corresponding data analysis according to the first request of the NWDAF user, so that it is convenient to obtain the second-level analysis report from the second-level NWDAF network element, and based on the third-level NWDAF network element The second level analysis report and the first level analysis report required by NWDAF users are jointly obtained for the shared data.
  • the determining, according to the first request, a second-level NWDAF network element for obtaining the second-level analysis report includes:
  • the network element identifier of the second-level NWDAF network element is obtained from the UDM.
  • the first-level NWDAF network element can determine the exclusive NF of the network slice to which the target UE belongs by querying the UDM. Therefore, the first-level NWDAF network element can obtain the network element identifier of the second-level NWDAF network element from the UDM, so as to determine which or which first-level NWDAF network element to use.
  • the secondary NWDAF network element obtains the corresponding secondary analysis report.
  • the first-level NWDAF network element collects and analyzes the shared data of the shared network elements in the network slice, and the second-level NWDAF network element is used to obtain and analyze. Process the data of the exclusive network element in the network slice. At the same time, the first-level NWDAF network element is also used to obtain an analysis report of the second-level NWDAF network element.
  • each network slice shares network elements such as AMF, UDM, and PCF
  • each network slice has exclusive UPF and SMF network elements
  • each second-level NWDAF network element serves an exclusive NF of one network slice. For example, if the target UE belongs to network slice 1, the exclusive NFs serving it are UPF 1 and SMF 1.
  • the first-level NWDAF network element can collect and process data for all network elements in the network slice.
  • the second-level NWDAF network element does not need to be used for the network slice.
  • the network elements in the slice are completely independent, so the data in the network slice needs to be collected and processed by the second-level NWDAF network element. At this time, for the first-level NWDAF network element, there is no data that needs to be processed for the network slice.
  • the first request includes at least one of the following:
  • the identification information of the first type of analysis is the identification information of the first type of analysis
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • the NWDAF user subscribes to the first-level NWDAF network element, and the first request sent may include relevant identification information of the first type of analysis to be performed, and the first-level NWDAF network element can be based on the identification information. Identify the first type of analysis that needs to be performed, the data that needs to be collected, etc.
  • the first request may also include identification information of the target UE, so that the first-level NWDAF network element collects relevant data for the target UE, and finally obtains an analysis report of the target UE based on the first type of analysis.
  • the above-mentioned first type of analysis may further include an associated second type of analysis, and the second type of analysis may be performed by the first-level NWDAF network element, or may be performed by the second-level NWDAF network element.
  • the first request includes identification information of the second-level analysis, and the first-level NWDAF network element determines to perform the second-level analysis by itself or determines a corresponding second-level NWDAF network element to perform the second-level analysis according to the identification information.
  • the first-level NWDAF network element can determine various analyses to be performed according to the first request, so as to complete the data collection, analysis and processing process together with the relevant second-level NWDAF network element, and obtain the first-level NWDAF user needs. analysis report.
  • the obtaining the network element identifier of the second-level NWDAF network element from the UDM according to the first request includes:
  • the first request determine the information of the exclusive NF of the network slice to which the target UE belongs from the UDM;
  • the network element identifier of the second-level NWDAF network element serving the network slice to which the target UE belongs is determined from the second-level NWDAF network element registered in the NRF network element.
  • both the first-level NWDAF network element and the second-level NWDAF network element are registered in the NRF, and the first-level NWDAF network element can register the second-level NWDAF network element from the NRF to obtain the corresponding second-level NWDAF network element analysis report. Therefore, the first-level NWDAF network element can determine the information of the exclusive NF of the network slice to which the target UE belongs according to the first request, that is, determine which data of which exclusive NF or which exclusive NF needs to be analyzed and processed. Therefore, the first-level NWDAF network element can determine the corresponding second-level NWDAF network element from the second-level NWDAF network element registered in the NRF to perform corresponding data collection and analysis processing.
  • the embodiment of the present disclosure also provides a data analysis method, as shown in Figure 5, the method is applied to the first-level NWDAF network element, including:
  • Step S401 according to the network element identifier of the second-level NWDAF network element, send a second request to the second-level NWDAF network element, wherein the second request is used for the second-level NWDAF network element to report analyze data.
  • the first-level NWDAF network element can subscribe to the second-level NWDAF network element that needs to obtain the corresponding data. Therefore, the first-level NWDAF network element sends the second-level NWDAF network element to the second-level NWDAF network element according to the network element identifier of the second-level NWDAF network element determined from the NRF. The network element sends the second request, thereby subscribing to the analysis report of the second-level NWDAF network element.
  • the second request includes at least one of the following:
  • the identification information of the first type of analysis is the identification information of the first type of analysis
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • the second request is similar in function to the first request, and is used to inform the second-level NWDAF network element of the first type of analysis that needs to be performed and/or the second type of analysis associated with the first type of analysis, and the target UE to perform the analysis, etc. Wait. Therefore, it is convenient for the second-level NWDAF network element to perform corresponding analysis according to the second request, and provide the analysis report to the first-level NWDAF network element.
  • the second-level NWDAF network element is further configured to send a third request to the auxiliary NWDAF network element; wherein the third request includes at least one of the following:
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • the same second-level NWDAF network element only serves the exclusive NF of one network slice, and the analysis report required by NWDAF consumers may require data-related analysis of multiple network slices, some second-level NWDAF network elements The associated data analysis report can be obtained with the assistance of the auxiliary NWDAF network element.
  • the second-level NWDAF network element can obtain the corresponding data analysis report by sending a third request to the auxiliary NWDAF network element.
  • the third request may include performing the analysis with the auxiliary NWDAF network element.
  • the associated information is analyzed, including the identification information of the target UE and the identification information of the second type of analysis, and so on.
  • the first request is: a first request sent by the NWDAF user to a first-level NWDAF network element registered with the NRF network element.
  • the first-level NWDAF network element and the second-level NWDAF network element may be registered with the NRF network element.
  • the NWDAF user needs to obtain the target UE's analysis report on the first type of analysis, it can determine the network elements that need to perform the first type of analysis and the associated second type of analysis from the NWDAF network elements at all levels registered with the NRF network element. .
  • the NWDAF user may send an analysis request to the NRF network element, and obtain the analysis request response sent by the NRF network element. Based on the analysis response, the NWDAF user can determine the first-level NWDAF network element and the second-level NWDAF network element to perform the analysis, and then send a first request to the first-level NWDAF network element to subscribe to the first-level NWDAF network element.
  • the NRF is configured to receive an analysis request sent by the NWDAF user, and send an analysis request response to the NWDAF user according to the analysis request; wherein the analysis request includes the first type of analysis and the analysis request response is used for the NWDAF user to determine to send the first request to the first-level NWDAF network element.
  • the NRF is a network warehousing function, which is used for NF registration, management, status detection, and automatic management of all NFs.
  • the registration information includes the NF type, address, and service list.
  • the NWDAF user can send an analysis request to the NRF, and the NRF responds to the analysis request and provides relevant information of each NWDAF network element that can perform the analysis.
  • the NWDAF user sends a corresponding subscription request to the NRF, and subscribes to the NWDAF network element that can provide the required analysis report.
  • the NWDAF network elements registered by the NRF at least include: the first-level NWDAF network elements and the second-level NWDAF network elements.
  • the first-level NWDAF network element and the second-level NWDAF network element can be registered in the NRF, so that the NRF can respond to the analysis request according to the registered NWDAF network element when obtaining the analysis request.
  • an embodiment of the present disclosure provides a data analysis method for a wireless network.
  • the method is applied to a second-level NWDAF network element, including:
  • Step S501 Send a second-level analysis report to the first-level NWDAF network element according to the first-type analysis to be performed; wherein, the second-level NWDAF network element and the network slice to which the target UE corresponding to the first-type analysis belongs have a corresponding relationship; the first-level NWDAF network element is used to send a first-level analysis report to an NWDAF user according to the second-level analysis report; the NWDAF user is used to adjust the first-level analysis report according to the first-level analysis report.
  • a class of analyzed network parameters is used to send a first-level analysis report to the NWDAF user according to the second-level analysis report.
  • a two-level hierarchical NWDAF architecture is deployed, and wireless network data collection and association, analysis subscription, and result feedback are carried out on this architecture.
  • the first-level NWDAF network element serves the shared network elements of multiple network slices
  • the second-level NWDAF network element serves the exclusive network element of a single network slice
  • multiple second-level NWDAF network elements can serve Exclusive network capabilities for the same network slice.
  • network slicing is an on-demand networking method that allows operators to separate multiple virtual end-to-end networks on a unified infrastructure.
  • Each network slice extends from the radio access network to the bearer network to the core Logical isolation is performed online to adapt to various types of services.
  • the NWDAF user that is, the NWDAF service consumer
  • the NWDAF service consumer is used to put forward data analysis requirements, that is, the above-mentioned first type of analysis needs to be performed on the target UE
  • the first-level NWDAF network element and the second-level NWDAF network element are Collect and analyze data according to the first type of analysis to be performed, and generate a corresponding analysis report.
  • NWDAF users can adjust the corresponding network parameters according to the analysis report, thereby realizing network optimization.
  • the NWDAF network element subscribed by the NWDAF user is the first-level NWDAF network element. Therefore, the first-level NWDAF network element sends the first-level analysis report to the NWDAF user.
  • the first-level NWDAF network element subscribes to the second-level NWDAF network element. Therefore, the second-level NWDAF network element sends the second-level analysis report obtained by the analysis to the first-level NWDAF network element, and the first-level NWDAF network element sends the analysis report to the first-level NWDAF network element.
  • the meta is further processed to generate the final first level analysis report.
  • the second-level NWDAF network element since the second-level NWDAF network element is an NWDAF network element having a corresponding relationship with a network slice, it has the exclusiveness of network slice data.
  • the second-level NWDAF network element collects the exclusive data in the network slice to which it belongs, performs corresponding analysis and processing, and generates a corresponding second-level analysis report. In this process, data exchange between network slices is not required.
  • the first-level NWDAF network element can collect and analyze data shared among multiple network slices.
  • the second-level network elements are divided according to network slices.
  • the NWDAF network element is more suitable for the scenario where the mobile terminal switches between different service areas, which reduces the interruption of the NWDAF service caused by the terminal switching service area, thereby improving the user experience.
  • one or more second-level NWDAF network elements are responsible for a service area, but the data analysis requirements in the service area are diverse and unbalanced, and it is necessary to deploy multiple support for different analysis types in a service area. Therefore, the embodiments of the present disclosure are divided into network slices, and each second-level NWDAF network element is responsible for the exclusive NF of one network slice, thereby reducing the number of NWDAF deployments in multiple service areas and reducing deployment. cost and improve efficiency.
  • the second level NWDAF network element serves an independent network slice and is used to analyze at least one network function NF exclusive to the network slice.
  • the second-level NWDAF network element is only used to serve independent network slices, and may be used to collect, analyze and process data of one or more NFs in the served independent network slices.
  • each independent network slice may correspond to one or more second-level NWDAF network elements.
  • the first type of analysis to be performed it can be processed with a second-level NWDAF network element that supports the analysis.
  • the second-level NWDAF network elements are isolated on network slices, which improves data security and service independence between network slices and reduces data security risks.
  • the second-level NWDAF network element includes at least one of the following:
  • the second-level NWDAF network element may collect data for analysis and processing, that is, perform the above-mentioned first-type analysis on the collected data to obtain a corresponding second-level analysis report.
  • data interaction can also be performed between the second-level NWDAF network elements, that is, the auxiliary NWDAF network element also belongs to the second-level NWDAF network element, and is used to assist other second-level network elements in data analysis.
  • the second type of network element may receive the analysis report sent by the auxiliary NWDAF network element.
  • the analysis report sent by the auxiliary NWDAF network element may be an analysis report obtained by performing a second type of analysis different from the first type of analysis.
  • the analysis report may be used to assist the second type of network element to perform the first type of analysis, thereby obtaining a second-level analysis report that can be sent to the first type of network element.
  • the above-mentioned auxiliary NWDAF network element assists the second-level NWDAF network element to perform the first type of analysis through the data obtained by performing the second type of analysis.
  • the second-level NWDAF network element makes an analysis report with the help of the auxiliary NWDAF network element.
  • the first type of network element is used for analysis, and for the relevant data of the target UE in different NFs or between different network slices, the above-mentioned second type of network element can be used for analysis. Perform analysis to perform comprehensive analysis of data between different NFs or different network slices.
  • the first type of network element is configured to collect data corresponding to the first type of analysis, and perform the first type of analysis according to the data corresponding to the first type of analysis;
  • the second type of network element is used to collect data corresponding to the first type of analysis, and to perform the first type of analysis according to the second-level analysis report and the data corresponding to the first type of analysis;
  • the auxiliary NWDAF network element is used to collect data corresponding to the second type of analysis, and to perform the second type of analysis according to the data corresponding to the second type of analysis to obtain the second-level analysis report; wherein the The second type of analysis is an association analysis of the first type of analysis.
  • the second-level NWDAF network element is configured to acquire exclusive NF data, and send the second-level analysis report to the first-level NWDAF network element according to the exclusive NF data.
  • the second-level NWDAF network element since the second-level NWDAF network element serves only one network slice, the second-level NWDAF network element is used to acquire exclusive NF data in the network slice, and generate a corresponding second-level analysis report.
  • the second-level NWDAF network element is subscribed by the first-level NWDAF network element, so after the second-level analysis report is sent to the first-level NWDAF network element, the first-level NWDAF network element performs further processing.
  • the second-level NWDAF network element is further configured to receive the desensitized exclusive NF data sent by the auxiliary NWDAF network element, and the auxiliary NWDAF network element is configured to desensitize the acquired exclusive NF data process, and send the desensitized exclusive NF data to the second-level NWDAF network element.
  • the second-level NWDAF network element may also need the assistance of the auxiliary NWDAF network element to perform data analysis. Therefore, the second-level NWDAF network element can receive the exclusive NF data sent by the auxiliary NWDAF network element.
  • data desensitization processing is required, for example, to remove sensitive information in the exclusive NF data, or to perform appropriate encryption processing, etc.
  • the second-level NWDAF network element can perform comprehensive processing in combination with the exclusive NF data collected by itself to obtain a corresponding second-level analysis report.
  • the method further includes:
  • the first-level NWDAF network element can subscribe to the second-level NWDAF network element that needs to obtain the corresponding data. Therefore, the first-level NWDAF network element sends the second-level NWDAF network element to the second-level NWDAF network element according to the network element identifier of the second-level NWDAF network element determined from the NRF. The network element sends the second request. The second-level NWDAF network element sends a corresponding analysis report to the first-level NWDAF network element based on the received second request.
  • the second request includes at least one of the following:
  • the identification information of the first type of analysis is the identification information of the first type of analysis
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • the second request is similar in function to the first request, and is used to inform the second-level NWDAF network element of the first type of analysis that needs to be performed and/or the second type of analysis associated with the first type of analysis, and the target UE to perform the analysis, etc. Wait. Therefore, it is convenient for the second-level NWDAF network element to perform corresponding analysis according to the second request, and provide the analysis report to the first-level NWDAF network element.
  • the method further includes:
  • the third request includes at least one of the following:
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • the same second-level NWDAF network element only serves the exclusive NF of one network slice, and the analysis report required by NWDAF consumers may require data-related analysis of multiple network slices, some second-level NWDAF network elements The associated data analysis report can be obtained with the assistance of the auxiliary NWDAF network element.
  • the second-level NWDAF network element can obtain the corresponding data analysis report by sending the third request to the auxiliary NWDAF network element.
  • the third request may include performing the analysis with the auxiliary NWDAF network element.
  • the associated information is analyzed, including the identification information of the target UE and the identification information of the second type of analysis, and so on.
  • An embodiment of the present disclosure provides a data analysis system for a wireless network, the system includes:
  • the first-level NWDAF network element is used to perform data analysis on the shared data of shared network elements in multiple network slices;
  • At least one second-level NWDAF network element is used to perform data analysis for the exclusive NF of each network slice within the service range of the first-level NWDAF network element; wherein, the second-level NWDAF network element has a corresponding relationship with the network slice.
  • NWDAF is a data-aware analysis network element that automatically senses and analyzes the network based on network data, and participates in network planning, construction, operation and maintenance, network optimization, and the entire life cycle of operation, making the network easy to maintain and control. Efficient use of network resources to improve user service experience. NWDAF can collect raw data from NF, AF, and OAM, perform intelligent analysis on the raw data, and feed back the analysis results to NF, AF, and OAM to optimize networks and services. In the working cycle of NWDAF, factors such as the efficiency of data collection and the way of data fusion of different dimensions have a significant impact on the efficiency of analysis and feedback, as well as the performance of intelligent network operations and services. Accordingly, embodiments of the present disclosure utilize NWDAF to implement efficient data collection and data association methods.
  • a two-level hierarchical NWDAF architecture is deployed, and wireless network data collection and association, analysis subscription, and result feedback are carried out on this architecture.
  • the first-level NWDAF network element serves the shared network elements of multiple network slices
  • the second-level NWDAF network element serves the exclusive network element of a single network element slice
  • a plurality of second-level NWDAF network elements It can serve exclusive network functions of the same network slice.
  • the second-level NWDAF network elements are divided according to the network slices.
  • the NWDAF network element is more suitable for the scenario where the mobile terminal is switched in different service areas, which reduces the NWDAF service terminal caused by the terminal switching service area, thereby improving the user experience.
  • the second-level NWDAF network element is further used for:
  • the first-level NWDAF network element is further configured to receive the second-level analysis report, and analyze the second-level analysis report and the shared data to obtain a first-level analysis report.
  • the second-level NWDAF network element performs data analysis on the exclusive NF in the network slice it serves, and obtains a second-level analysis report, while the first-level NWDAF network element can analyze the data of multiple network slices.
  • the shared data is collected and analyzed, and the second-level analysis report reported by the second-level NWDAF network element can also be processed.
  • the first-level analysis report obtained by the first-level NWDAF network element is obtained according to the comprehensive analysis and processing of the shared data and the second-level analysis report.
  • system further includes:
  • the NWDAF user 603 is configured to adjust corresponding network parameters according to the first-level analysis report.
  • the NWDAF user can subscribe to the first-level NWDAF network element and obtain the first-level analysis report provided by the first-level NWDAF network element, so as to adjust the network parameters and optimize the network state according to the situation related to the target UE.
  • system further includes:
  • the NRF is used to register the first-level NWDAF network element and the second-level NWDAF network element, and determine the first-level NWDAF network element and the first-level NWDAF network element to perform analysis according to the analysis request sent by the NWDAF user Secondary NWDAF network element;
  • the NWDAF user is further configured to send an analysis request to the NRF.
  • the first-level NWDAF network element and the second-level NWDAF network element may be registered with the NRF network element.
  • the NWDAF user When the NWDAF user needs to obtain the analysis report of the target UE about the first type of analysis, it can send an analysis request to the NRF network element, and based on the analysis request response sent by the NRF network element, determine the NRF network element from the registered NWDAF network element to the NRF network element.
  • the NWDAF user may send the above-mentioned first request to the corresponding first-level NWDAF network element according to the analysis request response.
  • system further includes:
  • the shared network elements in the multiple network slices are used to provide data to the first-level NWDAF network elements; wherein, the shared network elements include at least one of the following: NF; AF; OAM;
  • the exclusive NF of each of the network slices is used to provide data to the second-level NWDAF network element.
  • Multiple network slices have shared network elements and provide shared data in multiple network slices.
  • the first-level NWDAF network element serves multiple network slices, so it can obtain the data provided by the shared network elements, and perform data analysis and processing.
  • the second-level NWDAF network element serves a single network slice, it can collect and analyze the exclusive NF data in a single network slice.
  • FIG. 7 a schematic diagram of a system architecture corresponding to a wireless network data collection and association method provided by an embodiment of the present disclosure, the system includes the following network elements: NRF, first-level NWDAF, second-level NWDAF, NWDAF user , NF, AF and OAM.
  • the second-level NWDAF serves different network slices, and 5G core network elements support on-demand isolation modes at different levels to ensure business independence between different slices. Isolation modes include:
  • Partial exclusive mode suitable for common industry networks, some network elements are shared, and some network elements are exclusive;
  • one or more second-level NWDAFs are configured for each network slice to serve the exclusive network elements of the network slice, and the first-level NWDAFs serve the shared network elements of multiple network slices.
  • All levels of NWDAF are registered with the NRF, and NWDAF users subscribe to the first level of NWDAF with an analysis ID.
  • the first-level NWDAF can obtain data from the OAM, AF, and shared NF of each network slice.
  • the second-level NWDAF can only obtain data from the exclusive network elements it serves. Two different second-level NWDAFs may serve the same set of exclusive NFs.
  • a schematic flowchart corresponding to a wireless network data collection and association method provided by an embodiment of the present disclosure, the method includes the following steps:
  • Step S801 the first-level NWDAF registers with the NRF, and the registration information includes the supported analysis IDs and the information of multiple network slices served.
  • the second-level NWDAF is registered with the NRF, and the registration information includes the supported analysis IDs and served network slices, and exclusive NF information. Using the NF information registration implicitly indicates that this is a second-level NWDAF.
  • Step S802 the NWDAF user sends an analysis request to the NRF, including the required analysis ID, which is denoted as analysis ID 1.
  • Step S803 the NRF sends a request response to the NWDAF user, including the first-level NWDAF that meets the requirements, and the NWDAF user subscribes to the first-level NWDAF.
  • step S803 includes the following steps:
  • Step S31 the NRF sends a request response to the NWDAF user, including the identification of the first-level NWDAF that supports the analysis ID 1.
  • Step S32 NWDAF subscribes to the first-level NWDAF in the request response with the required analysis ID, and the subscription request includes the target UE ID, the associated analysis ID, that is, the analysis ID corresponding to the analysis type that is helpful to the required analysis type, and is denoted as analysis. ID 2.
  • Step S804 the first-level NWDAF determines which network elements to collect data from and the collection method of each network element data, and subscribes to the second-level NWDAF, and the NWDAFs at all levels complete data collection and data association.
  • step S804 includes the following steps:
  • Step S41 the first-level NWDAF subscribes to the second-level NWDAF with the analysis ID 1, and the subscription information includes the target UE ID and the association analysis ID 2.
  • Step S42 the second-level NWDAF subscribes to the auxiliary second-level NWDAF with the analysis ID 2, and the auxiliary second-level NWDAF supports the analysis ID 2.
  • Step S43 the first-level NWDAF acquires data from the OAM, AF, and shared NF, and the second-level NWDAF acquires data from the served exclusive NF.
  • Step S44 the NWDAFs at all levels associate the collected data according to the data association identifier to obtain end-to-end data of the user.
  • Step S805 the second-level NWDAF uses the collected data and the analysis report assisting the second-level NWDAF to perform analysis, and sends the analysis report to the first-level NWDAF.
  • step S805 includes the following steps:
  • Step S51 assist the second-level NWDAF to perform the analysis of the analysis ID 2 using the collected data, and send the analysis report to the second-level NWDAF 1 that subscribes to its analysis.
  • Step S52 the second-level NWDAF uses the collected data to perform the analysis of the analysis ID 1, and is assisted by the analysis report of the auxiliary NWDAF. After the analysis is performed, the analysis report is sent to the first-level NWDAF.
  • Step S806 the first-level NWDAF uses the collected data, uses the subscribed analysis report of the second-level NWDAF as an auxiliary to perform analysis, and sends the analysis report to the NWDAF user.
  • FIG. 9 a schematic flowchart of network data collection and association in a wireless network data collection and association method provided by an embodiment of the present disclosure, the method includes the following steps:
  • Step S901 the first-level NWDAF determines the exclusive NF of the network slice to which the target UE belongs by querying the UDM.
  • each network slice shares network elements such as AMF, UDM, and PCF, and each network slice has exclusive UPF and SMF network elements, and each second-level NWDAF serves an exclusive NF of one network slice. If the target UE belongs to network slice 1, the exclusive NFs serving it are UPF 1 and SMF 1.
  • Step S902 the first-level NWDAF queries the registration information of the second-level NWDAF in the NRF, finds the second-level NWDAF that serves the network slice to which the target UE belongs and supports the required analysis type, and obtains the analysis ID supported by the second-level NWDAF, and Exclusive NF information for its service.
  • the second-level NWDAF 1 supports analysis of ID1 and serves the exclusive NF of the network slice to which the target UE belongs;
  • the second-level NWDAF 2 supports the analysis of ID2 and serves the exclusive NF of the network slice to which the target UE belongs;
  • the second-level NWDAF N supports analyzing ID1 and does not serve the network slice to which the target UE belongs.
  • Step S903 the first-level NWDAF subscribes to the second-level NWDAF that meets the conditions with the required analysis ID, and provides information of the auxiliary second-level NWDAF that serves the network slice to which the target UE belongs and supports the associated analysis type.
  • step S903 includes the following steps:
  • Step S31 the first-level NWDAF subscribes to the second-level NWDAF 1 with the analysis ID 1, and the subscription information includes the target UE ID, the associated analysis ID (analysis ID2), and provides a second-level service that serves the network slice to which the target UE belongs and supports the analysis ID2. Identifier for NWDAF 2.
  • Step S32 the first-level NWDAF subscribes to the second-level NWDAF N with the analysis ID 1, and the subscription information includes the target UE ID and the association analysis ID (analysis ID2).
  • Step S904 the second-level NWDAF 1 subscribes to the second-level NWDAF 2 with the analysis ID2, and the subscription information includes the target UE ID.
  • Step S905 the first-level NWDAF collects data from the OAM, AF, and NF, and the second-level NWDAF collects data from the NF it serves.
  • step S905 includes the following steps:
  • Step S51 the first-level NWDAF collects data from the shared NF/internal AF.
  • Step S52 the first-level NWDAF collects data from the OAM.
  • Step S53 the first-level NWDAF collects the data of the third-party AF through the NEF.
  • Step S54 the second-level NWDAF collects data from the served exclusive NF.
  • Step S906 the NWDAFs at all levels use the data association identifier to perform data association on the collected data.
  • Step S907 each second-level NWDAF desensitizes the data according to the data privacy protection rules of the slice, and sends the processed data when the other NWDAFs request to collect the data of the exclusive network element in the slice.
  • FIG. 10 it is a schematic diagram of a data association identifier in a wireless network data collection and association method provided by an embodiment of the present disclosure.
  • NWDAF can collect data from each network element. The data of the same user is often distributed on different network elements. In order to obtain the end-to-end data of the user, the data collected from each network element needs to be associated with the data association identifier.
  • the association method of the data obtained from the core network network elements SMF, UPF, AMF, PCF, AF and OAM is introduced in conjunction with the accompanying drawings, and the details are as follows:
  • the main information collected by NWDAF from each network element is as follows:
  • SMF is the network element of session management function, and SMF data mainly includes session information
  • UPF is a user plane functional network element, and UPF data mainly includes flow information
  • AMF is an access and mobility management function network element, and AMF data mainly includes user location information
  • PCF is the network element of policy control function, and PCF data mainly contains policy information
  • AF is an application layer functional network element, and AF data mainly includes business information
  • the OAM is an operation, maintenance and management network element, and the OAM data from the RAN side mainly includes wireless channel information.
  • the data of each network element is associated with the data association identifier as follows:
  • SMF data, UPF data and UPF data can be associated with the terminal IP address and timestamp
  • UPF data and AF data can be associated with IP quintuple and timestamp
  • SMF data and AMF data can be associated with SUPI and timestamp
  • SMF data and PCF data can be associated with SUPI, DNN, S-NSSAI or terminal IP address;
  • AMF data and OAM data can be associated with RAN UE NGAP ID and timestamp
  • UPF data and OAM data can be associated with AN tunnel information and timestamp
  • SMF data and AF data can be associated with application ID, IP filter information and timestamp.
  • the IP quintuple is the source IP address, source port, destination IP address, destination port and transport layer protocol; SUPI is the unique permanent identity mark of the user in the 5G network; DNN is the data network name; S-NSSAI is the unique network slice Identifier; RAN UE NGAP ID is the radio access network user equipment NG interface application protocol identifier, RAN UE NGAP ID is unique in the NG-RAN node; AN tunnel information includes endpoint IP address and GTP tunnel endpoint identifier.
  • the protocol and interface schematic diagram of the NWDAF registration and analysis subscription part in a wireless network data collection and association method mainly involve NWDAF users, NRFs, and first-level NWDAFs in the system.
  • second-level NWDAF 1, second-level NWDAF 2, and second-level NWDAF N details as follows:
  • the first-level NWDAF registers with the NRF, and the registration information includes the analysis ID supported by the first-level NWDAF.
  • the first level NWDAF supports analysis ID1 and analysis ID2.
  • the second-level NWDAF N registers with the NRF, and the registration information includes the analysis ID supported by the second-level NWDAF N, the network slice it serves, and the corresponding exclusive NF ID.
  • the second-level NWDAF N supports analysis ID 1, serves network slice 1, and corresponds to exclusive NF m1,..., exclusive NF mj.
  • the second-level NWDAF 2 registers with the NRF, and the registration information includes the analysis ID supported by the second-level NWDAF 2, the network slice it serves, and the corresponding exclusive NF ID.
  • the second-level NWDAF 2 supports the analysis ID 2, serves the network slice 2, and corresponds to the exclusive NF l1, . . , and the exclusive NF lj.
  • the second-level NWDAF 1 registers with the NRF, and the registration information includes the analysis ID supported by the second-level NWDAF 1, the network slice it serves, and the corresponding exclusive NF ID.
  • the second-level NWDAF 1 supports the analysis ID1, serves the network slice 2, and corresponds to the exclusive NF l1, . . , and the exclusive NF lj.
  • the NWDAF user sends an analysis request message to the NRF, and the analysis request message includes the required analysis ID.
  • the analysis ID required by the NWDAF user is analysis ID 1.
  • the NRF selects the first-level NWDAF that supports the analysis ID in the analysis request message from the registered NWDAFs.
  • the NRF sends an analysis request response message to the NWDAF user, and the analysis request response message includes the identifier of the first-level NWDAF that meets the requirements.
  • NWDAF users request to subscribe to the first-level NWDAF through the Nnwdaf AnalyticsSubscription Subscribe service.
  • the analysis subscription request message includes analysis ID 1, target UE ID, and association analysis ID.
  • the associated analysis ID of analysis ID 1 is analysis ID 2.
  • the first-level NWDAF determines the network slice to which the target UE belongs by querying the UDM, finds the exclusive network element serving the target UE, and then analyzes the ID supported by the second-level NWDAF in the registration information of the second-level NWDAF and serves the exclusive NF. , to identify the second-level NWDAF that needs to be subscribed.
  • the second-level NWDAF 1 supports analysis of ID1 and serves the exclusive NF of the network slice to which the target UE belongs;
  • the second-level NWDAF 2 supports the analysis of ID2 and serves the exclusive NF of the network slice to which the target UE belongs;
  • the second-level NWDAF N supports analysis of ID1 and does not serve the exclusive NF of the network slice to which the target UE belongs. Then the first-level NWDAF needs to subscribe to the second-level NWDAF 1 and the second-level NWDAF N that support analysis ID 1.
  • the first-level NWDAF requests to subscribe to the second-level NWDAF 1 through the Nnwdaf AnalyticsSubscription Subscribe service, and the analysis subscription request message includes analysis ID 1, target UE ID, association analysis ID 2, and supports association analysis ID and serves the exclusive ownership of the target UE.
  • the identifier of the second-level NWDAF of the NF i.e. the second-level NWDAF 2.
  • the first-level NWDAF requests to subscribe to the second-level NWDAF N through the Nnwdaf AnalyticsSubscription Subscribe service, and the analysis subscription request message includes analysis ID 1, target UE ID and association analysis ID 2.
  • the second-level NWDAF 1 requests to subscribe to NWDAF 2 through the Nnwdaf AnalyticsSubscription Subscribe service, and the analysis subscription request message contains the analysis ID 2 and the target UE ID.
  • a schematic diagram of a protocol and interface of a network metadata collection and association part in a wireless network data collection and association method mainly involves third-party AF, NRF, NEF, OAM, NF, AF, first-level NWDAF, and second-level NWDAF.
  • NRF and NEF and NF and internal AF are combined as one part to make the drawing clearer, and will be explained in the specific description. details as follows:
  • the first-level NWDAF subscribes the events of the functional network element to the shared NF/internal AF through the Nnf EventExposure Subscribe/Naf EventExposure Subscribe service.
  • the NF/internal AF prepares to subscribe to the data corresponding to the event.
  • the NF/internal AF If the NF/internal AF has the data ready, it will provide the first-level NWDAF with the data of the subscription event through the Nnf/Naf EventExposure Notify service.
  • the first-level NWDAF sends a subscription network management data message to the OAM.
  • the OAM sends a notification subscription success message to the first-level OAM.
  • OAM prepares network management data.
  • the OAM sends a message to notify the network management that the data is ready to be completed to the first-level NWDAF, and informs the first-level NWDAF of the data storage address.
  • the first-level NWDAF obtains the OAM data from the storage address through FTP.
  • the third-party AF registers the data information to the NRF through the NEF.
  • the first-level NWDAF sends an AF data discovery message to the NRF, and searches for a third-party AF that can provide the required data from the data registration information in the NRF.
  • the first-level NWDAF subscribes NEF events to NEF through the Nnef EventExposure Subscribe service.
  • NEF subscribes AF events to AF through the Naf EventExposure Subscribe service.
  • AF provides NEF with data of subscription events through the Naf EventExposure Notify service.
  • NEF provides the first-level NWDAF with data of subscription events through the Nnef EventExposure Notify service.
  • the second-level NWDAF subscribes the events of the functional network element to the exclusive NF through the Nnf EventExposure Subscribe service.
  • the exclusive NF If the exclusive NF has the data ready, it will provide the second-level NWDAF with the data of the subscription event through the Nnf EventExposure Notify service.
  • All levels of NWDAF and data identifiers associate data from different NFs, AFs, and OAMs to realize end-to-end association of user data.
  • the corresponding second-level NWDAF will collect the data, and desensitize the data according to the data privacy protection rules of this slice.
  • steps 1a-1c are the process of first-level NWDAF collecting data from shared NF/internal AF
  • steps 2a-2d are the process of first-level NWDAF collecting data from OAM
  • steps 3a-3f are first-level NWDAF collecting data from third parties
  • steps 4a-4c are the process of second-level NWDAF collecting data from the served exclusive NF.
  • the above four processes are in no particular order and can be performed simultaneously.
  • FIG. 13 a protocol and interface schematic diagram of the NWDAF execution analysis and result feedback part in a wireless network data collection and association method provided by an embodiment of the present disclosure.
  • collaboration among NWDAFs may specify subscriptions to data collected by that NWDAF or to analyze results.
  • the following takes the analysis report as an example to illustrate:
  • the second level NWDAF 2 uses the collected data to perform the analysis of Analysis ID 2.
  • the second-level NWDAF 2 sends the analysis result report to the second-level NWDAF 1 through the Nnwdaf AnalyticsSubscription Notify service.
  • the second-level NWDAF 1 performs the analysis of the analysis ID 1 using the collected data with the help of the analysis report sent by the second-level NWDAF 2.
  • the second-level NWDAF 1 sends the analysis result report to the first-level NWDAF through the Nnwdaf AnalyticsSubscription Notify service.
  • the second level NWDAF N uses the collected data to perform the analysis of Analysis ID 1.
  • the second-level NWDAF N sends the analysis result report to the first-level NWDAF through the Nnwdaf AnalyticsSubscription Notify service.
  • the first-level NWDAF performs the analysis of the analysis ID 1 using the collected data with the help of the analysis report sent by the second-level NWDAF 1,N.
  • the first-level NWDAF sends the analysis result report to NWDAF users through the Nnwdaf AnalyticsSubscription Notify service.
  • NWDAF users trigger network and service optimization policy adjustment based on the analysis result report.
  • an embodiment of the present disclosure further provides a data analysis apparatus 1400 for a wireless network, which is applied to a first-level NWDAF network element, including:
  • the first obtaining module 1401 is configured to obtain, according to the first type of analysis to be performed, a second-level analysis report sent by a second-level NWDAF network element that has a corresponding relationship with the network slice to which the target user equipment UE belongs;
  • the first sending module 1402 is configured to send a first-level analysis report to an NWDAF user according to the second-level analysis report, wherein the NWDAF user is configured to adjust the first-level analysis according to the first-level analysis report network parameters.
  • the second level NWDAF network element serves an independent network slice and is used to analyze at least one network function NF exclusive to the network slice.
  • the second-level NWDAF network element includes at least one of the following:
  • the first type of network element is configured to collect data corresponding to the first type of analysis, and perform the first type of analysis according to the data corresponding to the first type of analysis;
  • the second type of network element is used to collect the data corresponding to the first type of analysis and the data provided by the auxiliary NWDAF network element, and execute the first type of analysis; the auxiliary NWDAF network element is used to collect the second type of analysis.
  • the data corresponding to the class analysis is performed, and the second class analysis is performed according to the data corresponding to the second class analysis to obtain the second-level analysis report; wherein, the second class analysis is the result of the first class analysis Correlation Analysis.
  • the apparatus further includes:
  • a second obtaining module configured to obtain the shared data to be analyzed from the shared network element based on the first type of analysis
  • the second sending module is configured to send the first-level analysis report to the NWDAF user according to the second-level analysis report, including:
  • the first level analysis report is sent to the NWDAF user based on the shared data and the second level analysis report.
  • the shared network element includes at least one of the following:
  • the second-level NWDAF network element is configured to acquire exclusive NF data, and send the second-level analysis report to the first-level NWDAF network element according to the exclusive NF data.
  • the exclusive NF data and the shared data obtained by the first-level NWDAF network element from the shared network element carry a data association identifier, and the data association identifier is used to identify each data and the target The association relationship of the UE.
  • the data association identifier includes at least one of the following:
  • Network slice uniquely identifies S-NSSAI
  • the second-level NWDAF network element is further configured to receive exclusive NF data sent by an auxiliary NWDAF network element, and the auxiliary NWDAF network element is configured to perform desensitization processing on the acquired exclusive NF data, and desensitize the desensitized NWDAF data.
  • the sensitively processed exclusive NF data is sent to the second-level NWDAF network element.
  • the apparatus further includes:
  • a first receiving module configured to receive the first request of the NWDAF user
  • the first determining module is configured to determine, according to the first request, a second-level NWDAF network element for acquiring the second-level analysis report.
  • the first determining module includes:
  • the obtaining submodule is configured to obtain the network element identifier of the second-level NWDAF network element from the UDM according to the first request.
  • the first request includes at least one of the following:
  • the identification information of the first type of analysis is the identification information of the first type of analysis
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • the obtaining submodule includes:
  • a first determining submodule configured to determine, according to the first request, information about the exclusive NF of the network slice to which the target UE belongs from the UDM;
  • the second determination sub-module is configured to, according to the information of the exclusive NF, from the second-level NWDAF network elements registered in the NRF network element, determine the network serving the second-level NWDAF network element of the network slice to which the target UE belongs. Meta ID.
  • the apparatus further includes:
  • a third sending module configured to send a second request to the second-level NWDAF network element according to the network element identifier of the second-level NWDAF network element, wherein the second request is used for the second-level NWDAF network element NWDAF network elements report analysis data.
  • the second request includes at least one of the following:
  • the identification information of the first type of analysis is the identification information of the first type of analysis
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • the second-level NWDAF network element is further configured to send a third request to the auxiliary NWDAF network element; wherein the third request includes at least one of the following:
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • the first request is: a first request sent by the NWDAF user to the first-level NWDAF network element registered with the NRF network element of the network warehousing function.
  • the NRF is configured to receive an analysis request sent by the NWDAF user, and send the analysis request response to the NWDAF user according to the analysis request; wherein the analysis request includes the first Identification information of the class analysis; the analysis request response is used for the NWDAF user to determine to send the first request to the first-level NWDAF network element.
  • the NWDAF network elements registered by the NRF at least include: the first-level NWDAF network elements and the second-level NWDAF network elements.
  • an embodiment of the present disclosure further provides a data analysis apparatus 1500 of a wireless network, which is applied to a second-level NWDAF network element, including:
  • the fourth sending module 1501 is configured to send a second-level analysis report to the first-level NWDAF network element according to the first-type analysis to be performed; wherein, the second-level NWDAF network element corresponds to the first-level analysis.
  • the network slice to which the target UE belongs has a corresponding relationship; the first-level NWDAF network element is used to send the first-level analysis report to the NWDAF user according to the second-level analysis report; the NWDAF user is used to analyze according to the first-level analysis report The report adjusts the network parameters of the first type of analysis.
  • the second level NWDAF network element serves an independent network slice and is used to analyze at least one network function NF exclusive to the network slice.
  • the second-level NWDAF network element includes at least one of the following:
  • the first type of network element is configured to collect data corresponding to the first type of analysis, and perform the first type of analysis according to the data corresponding to the first type of analysis;
  • the second type of network element is used to collect the data corresponding to the first type of analysis and the data provided by the auxiliary NWDAF network element, and perform the first type of analysis;
  • the auxiliary NWDAF network element is used to collect data corresponding to the second type of analysis, and to perform the second type of analysis according to the data corresponding to the second type of analysis to obtain the second-level analysis report; wherein the The second type of analysis is an association analysis of the first type of analysis.
  • the second-level NWDAF network element is configured to acquire exclusive NF data, and send the second-level analysis report to the first-level NWDAF network element according to the exclusive NF data.
  • the second-level NWDAF network element is further configured to receive the desensitized exclusive NF data sent by the auxiliary NWDAF network element, and the auxiliary NWDAF network element is configured to desensitize the acquired exclusive NF data process, and send the desensitized exclusive NF data to the second-level NWDAF network element.
  • the apparatus further includes:
  • a second receiving module configured to receive a second request sent by the first-level NWDAF network element according to the network element identifier of the second-level NWDAF network element, wherein the second request is used for the second-level NWDAF network element NWDAF network elements report analysis data.
  • the second request includes at least one of the following:
  • the identification information of the first type of analysis is the identification information of the first type of analysis
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • the apparatus further includes:
  • a fifth sending module configured to send a third request to the auxiliary NWDAF network element; wherein the third request includes at least one of the following:
  • Identification information of a second type of analysis associated with the first type of analysis is obtained.
  • FIG. 16 is a structural block diagram of a communication device provided by an embodiment of the present disclosure.
  • the communication device may be a terminal or a user equipment involved in any of the foregoing embodiments.
  • the communication device 1600 may be a mobile phone, computer, digital broadcast user equipment, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like.
  • the communication device 1600 may include at least one of the following components: a processing component 1602, a memory 1604, a power supply component 1606, a multimedia component 1608, an audio component 1610, an input/output (I/O) interface 1612, a sensor component 1614, and Communication component 1616.
  • a processing component 1602 a memory 1604, a power supply component 1606, a multimedia component 1608, an audio component 1610, an input/output (I/O) interface 1612, a sensor component 1614, and Communication component 1616.
  • the processing component 1602 generally controls the overall operation of the communication device 1600, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 1602 can include at least one processor 1620 to execute instructions to perform all or part of the steps of the above-described methods. Additionally, processing component 1602 can include at least one module that facilitates interaction between processing component 1602 and other components. For example, processing component 1602 may include a multimedia module to facilitate interaction between multimedia component 1608 and processing component 1602.
  • Memory 1604 is configured to store various types of data to support operation at communication device 1600 . Examples of such data include instructions for any application or method operating on the communication device 1600, contact data, phonebook data, messages, pictures, videos, and the like. Memory 1604 may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • Power supply component 1606 provides power to various components of communication device 1600 .
  • Power supply components 1606 may include a power management system, at least one power supply, and other components associated with generating, managing, and distributing power to communication device 1600 .
  • Multimedia component 1608 includes a screen that provides an output interface between the communication device 1600 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes at least one touch sensor to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or swipe action, but also detect wake-up time and pressure associated with the touch or swipe action.
  • the multimedia component 1608 includes a front-facing camera and/or a rear-facing camera. When the communication device 1600 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have focal length and optical zoom capability.
  • Audio component 1610 is configured to output and/or input audio signals.
  • audio component 1610 includes a microphone (MIC) that is configured to receive external audio signals when communication device 1600 is in operating modes, such as call mode, recording mode, and voice recognition mode. The received audio signal may be further stored in memory 1604 or transmitted via communication component 1616.
  • audio component 1610 also includes a speaker for outputting audio signals.
  • the I/O interface 1612 provides an interface between the processing component 1602 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.
  • Sensor assembly 1614 includes at least one sensor for providing various aspects of status assessment for communication device 1600 .
  • the sensor component 1614 can detect the open/closed state of the device 1600, the relative positioning of components, such as the display and keypad of the communication device 1600, the sensor component 1614 can also detect the communication device 1600 or a component of the communication device 1600
  • the position of the communication device 1600 changes, the presence or absence of user contact with the communication device 1600, the orientation or acceleration/deceleration of the communication device 1600, and the temperature change of the communication device 1600.
  • Sensor assembly 1614 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 1614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 1614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • Communication component 1616 is configured to facilitate wired or wireless communication between communication device 1600 and other devices.
  • Communication device 1600 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.
  • the communication component 1616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 1616 also includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the communication device 1600 may be implemented by at least one application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate An array (FPGA), controller, microcontroller, microprocessor, or other electronic component implementation for performing the above method.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • DSPD digital signal processing device
  • PLD programmable logic device
  • FPGA field programmable gate An array
  • controller microcontroller, microprocessor, or other electronic component implementation for performing the above method.
  • a non-transitory computer-readable storage medium including instructions such as a memory 1604 including instructions, executable by the processor 1620 of the communication device 1600 to perform the above-described method is also provided.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
  • an embodiment of the present disclosure shows the structure of another communication device.
  • the communication device may be a base station, or any network device involved in the embodiments of the present disclosure.
  • the communication device 1700 may be provided as a network device.
  • the communication device 1700 includes a processing component 1722, which further includes at least one processor, and a memory resource, represented by memory 1732, for storing instructions executable by the processing component 1722, such as an application program.
  • An application program stored in memory 1732 may include one or more modules, each corresponding to a set of instructions.
  • the processing component 1722 is configured to execute instructions to perform any of the aforementioned methods applied to the communication device.
  • the communication device 1700 may also include a power supply assembly 1726 configured to perform power management of the communication device 1700, a wired or wireless network interface 1750 configured to connect the communication device 1700 to a network, and an input output (I/O) interface 1758 .
  • Communication device 1700 may operate based on an operating system stored in memory 1732, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

Abstract

本公开实施例提供了一种无线网络的数据分析方法及装置、通信设备和存储介质。本公开实施例所提供的无线网络的数据分析方法应用于第一级NWDAF网元，包括：根据待执行的第一类分析，获取与目标用户设备UE所属网络切片具有对应关系的第二级NWDAF网元发送的第二级分析报告；根据所述第二级分析报告，向NWDAF用户发送第一级分析报告，其中，所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。

Description

无线网络的数据分析方法及装置、通信设备和存储介质 技术领域
本公开实施例涉及无线通信领域但不限于无线通信领域，尤其涉及一种无线网络的数据分析方法及装置、通信设备和存储介质。
背景技术
5G时代许多新的业务场景提出了对SLA(Service Level Agreement，服务级别协议)的差异化需求，带来了网络运营的复杂性。面对未来通信场景的复杂化、业务需求的多样化、业务体验的个性化，目前的5G网络智能化水平仍不足以实现按需服务和更高的网络资源利用效率。
发明内容
本公开提供一种无线网络的数据分析方法及装置、通信设备和存储介质。
根据本公开实施例的第一方面，提供一种无线网络的数据分析方法，所述方法应用于第一级网络数据分析功能NWDAF(Network Data Analytics Function，网络数据分析功能)网元，包括：
根据待执行的第一类分析，获取与目标UE(User Equipment，用户设备)所属网络切片具有对应关系的第二级NWDAF网元发送的第二级分析报告；
根据所述第二级分析报告，向NWDAF用户发送第一级分析报告，其中，所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
根据本公开实施例的第二方面，提供一种无线网络的数据分析方法， 所述方法应用于第二级NWDAF网元，包括：
根据待执行的第一类分析，向第一级NWDAF网元发送第二级分析报告；其中，所述第二级NWDAF网元与所述第一类分析对应的目标UE所属网络切片具有对应关系；所述第一级NWDAF网元用于根据所述第二级分析报告向NWDAF用户发送第一级分析报告；所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
根据本公开实施例的第三方面，提供一种无线网络的数据分析装置，所述装置应用于第一级NWDAF网元，包括：
第一获取模块，配置为根据待执行的第一类分析，获取与目标用户设备UE所属网络切片具有对应关系的第二级NWDAF网元发送的第二级分析报告；
第一发送模块，配置为根据所述第二级分析报告，向NWDAF用户发送第一级分析报告，其中，所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
根据本公开实施例的第四方面，提供一种无线网络的数据分析装置，所述装置应用于第二级NWDAF网元，包括：
第四发送模块，配置为根据待执行的第一类分析，向第一级NWDAF网元发送第二级分析报告；其中，所述第二级NWDAF网元与所述第一类分析对应的目标UE所属网络切片具有对应关系；所述第一级NWDAF网元用于根据所述第二级分析报告向NWDAF用户发送第一级分析报告；所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
根据本公开实施例的第五方面，提供一种通信设备，其中，所述通信设备至少包括：处理器和用于存储能够在所述处理器上运行的可执行指令的存储器，其中：
处理器用于运行所述可执行指令时，所述可执行指令执行上述任一无线网络的数据分析方法中的步骤。
根据本公开实施例的第六方面，提供一种非临时性计算机可读存储介质，其中，所述计算机可读存储介质中存储有计算机可执行指令，该计算机可执行指令被处理器执行时实现上述任一项无线网络的数据分析方法中的步骤。
本公开实施例中，通过两级NWDAF网元进行数据分析，并且第二级NWDAF网元与网络切片具有对应关系。如此，一方面便于实现网络切片件的网元的隔离需求，提升了数据安全性；另一方面，相比于按照服务区域划分第二级NWDAF网元的方式，本公开实施例中的第二级NWDAF网元更适用于移动终端在不同服务区域中切换的场景，减少了由于终端切换服务区导致的NWDAF服务终端，进而提升用户的使用感受。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开实施例，并与说明书一起用于解释本公开实施例的原理。
图1是根据一示例性实施例示出的一种无线通信系统的结构示意图；
图2是根据一示例性实施例示出的一种数据分析方法的流程图一；
图3是根据一示例性实施例示出的一种数据分析方法的流程图二；
图4是根据一示例性实施例示出的一种数据分析方法的流程图三；
图5是根据一示例性实施例示出的一种数据分析方法的流程图四；
图6是根据一示例性实施例示出的一种数据分析方法的流程图五；
图7是根据一示例性实施例示出的一种数据分析系统的架构示意图；
图8是根据一示例性实施例示出的一种数据分析方法的流程图六；
图9是根据一示例性实施例示出的一种数据分析方法中网络数据收集和关联的流程示意图；
图10是根据一示例性实施例示出的一种数据分析方法中的数据关联标识的示意图；
图11是根据一示例性实施例示出的一种数据分析方法中注册和订阅的协议和接口原理图；
图12是根据一示例性实施例示出的一种数据分析方法中数据收集和关联的协议和接口原理图；
图13是根据一示例性实施例示出的一种数据分析方法中自行分析和结果反馈的协议和接口原理图；
图14是根据一示例性实施例示出的一种数据分析装置的结构框图一；
图15是根据一示例性实施例示出的一种数据分析装置的结构框图二；
图16是根据一示例性实施例示出的一种通信设备的结构示意图一；
图17是根据一示例性实施例示出的一种通信设备的结构示意图二。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类 型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”及“若”可以被解释成为“在……时”或“当……时”或“响应于确定”。
为了更好地描述本公开任一实施例，本公开一实施例以一个接入控制的应用场景为例进行示例性说明。
请参考图1，其示出了本公开实施例提供的一种无线通信系统的结构示意图。如图1所示，无线通信系统是基于蜂窝移动通信技术的通信系统，该无线通信系统可以包括：若干个终端11以及若干个基站12。
其中，终端11可以是指向用户提供语音和/或数据连通性的设备。终端11可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，终端11可以是物联网终端，如传感器设备、移动电话(或称为“蜂窝”电话)和具有物联网终端的计算机，例如，可以是固定式、便携式、袖珍式、手持式、计算机内置的或者车载的装置。例如，站(Station，STA)、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程终端(remote terminal)、接入终端(access terminal)、用户装置(user terminal)、用户代理(user agent)、用户设备(user device)、或用户终端(user equipment，终端)。或者，终端11也可以是无人飞行器的设备。或者，终端11也可以是车载设备，比如，可以是具有无线通信功能的行车电脑，或者是外接行车电脑的无线终端。或者，终端11也可以是路边设备，比如，可以是具有无线通信功能的路灯、信号灯或者其它路边设备等。
基站12可以是无线通信系统中的网络侧设备。其中，该无线通信系统可以是第四代移动通信技术(the 4th generation mobile communication，4G)系统，又称长期演进(Long Term Evolution，LTE)系统；或者，该无线通 信系统也可以是5G系统，又称新空口(new radio，NR)系统或5G NR系统。或者，该无线通信系统也可以是5G系统的再下一代系统。其中，5G系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。
其中，基站12可以是4G系统中采用的演进型基站(eNB)。或者，基站12也可以是5G系统中采用集中分布式架构的基站(gNB)。当基站12采用集中分布式架构时，通常包括集中单元(central unit，CU)和至少两个分布单元(distributed unit，DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈；分布单元中设置有物理(Physical，PHY)层协议栈，本公开实施例对基站12的具体实现方式不加以限定。
基站12和终端11之间可以通过无线空口建立无线连接。在不同的实施方式中，该无线空口是基于第四代移动通信网络技术(4G)标准的无线空口；或者，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
在一些实施例中，终端11之间还可以建立E2E(End to End，端到端)连接。比如车联网通信(vehicle to everything，V2X)中的V2V(vehicle to vehicle，车对车)通信、V2I(vehicle to Infrastructure，车对路边设备)通信和V2P(vehicle to pedestrian，车对人)通信等场景。
在一些实施例中，上述无线通信系统还可以包含网络管理设备13。
若干个基站12分别与网络管理设备13相连。其中，网络管理设备13可以是无线通信系统中的核心网设备，比如，该网络管理设备13可以是演进的数据分组核心网(Evolved Packet Core，EPC)中的移动性管理实体 (Mobility Management Entity，MME)。或者，该网络管理设备也可以是其它的核心网设备，比如服务网关(Serving GateWay，SGW)、公用数据网网关(Public Data Network GateWay，PGW)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)或者归属签约用户服务器(Home Subscriber Server，HSS)等。对于网络管理设备13的实现形态，本公开实施例不做限定。
为了提升网络资源了利用效率，引入了NWDAF网元，用于辅助网络切片负载分析，以优化网络切片选择和5G QoS决策。此外，对于5G智能网络架构和能力、以及在不同场景下NWDAF可以导出的数据分析结果都需要进行规范，并且需要对NWDAF功能进行补充和增强。
对于未来网络架构的设计，目标是实现分层式智能网络架构，提供平台化能力，满足大型运营商和网络部署要求，使能垂直业务拓展。
如图2所示，本公开实施例提供一种无线网络的数据分析方法，所述方法应用于第一级NWDAF网元，包括：
步骤S101、根据待执行的第一类分析，获取与目标UE所属网络切片具有对应关系的第二级NWDAF网元发送的第二级分析报告；
步骤S102、根据所述第二级分析报告，向NWDAF用户发送第一级分析报告，其中，所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
NWDAF是一个数据感知分析网元，以网络数据为基础对网络进行自动感知和分析，并参与到网络规划、建设、运维、网络优化以及运营全生命周期中，使得网络易于维护和控制，提高网络资源使用效率，提升用户业务体验。NWDAF可以从NF(Network Function，网络功能)、AF(Application Function，应用层功能)以及OAM(Operation Administration and Maintenance，操作维护管理)收集原始数据，并对原 始数据进行智能分析，将分析结果反馈给NF、AF以及OAM等，用于优化网络和业务。在NWDAF工作的周期中，数据收集的效率、不同维度数据的融合方式等因素对分析反馈的效率以及网络智能化运营和业务的性能有着重大的影响。因此，本公开实施例利用NWDAF实现高效的数据收集和数据关联方法。
在本公开实施例中，部署了两级分层NWDAF架构，并在此架构上开展无线网络数据收集和关联以及分析订阅和结果反馈等工作。在本公开实施例中，第一级NWDAF网元服务多个网络切片的共享网元，第二级NWDAF网元服务单个网络切片的独享网元，且多个第二级NWDAF网元可以服务同一网络切片的独享网络功能。
这里，网络切片是一种按需组网的方式，可以让运营商在统一的基础设施上分离出多个虚拟的端到端网络，每个网络切片从无线接入网到承载网再到核心网上进行逻辑隔离，从而适配各种类型的业务。
在本公开实施例中，NWDAF用户即NWDAF服务消费者，用于提出数据分析的需求，即需要针对目标UE执行上述第一类分析，那么第一级NWDAF网元及第二级NWDAF网元则根据待执行的第一类分析进行数据的收集和分析，并生成相应的分析报告。NWDAF用户则可根据分析报告进行对应的网络参数调整，进而实现网络优化。
NWDAF用户所订阅的NWDAF网元为第一级NWDAF网元，因此，第一级NWDAF网元将第一级分析报告发送至NWDAF用户。而第一级NWDAF网元订阅的是第二级NWDAF网元，因此，第二级NWDAF网元将分析得到的第二级分析报告发送至第一级NWDAF网元，并由第一级NWDAF网元进行进一步处理生成最终的第一级分析报告。
在本公开实施例中，由于第二级NWDAF网元为与网络切片具有对应关系的NWDAF网元，因此具有网络切片数据的独占性。第二级 NWDAF网元收集所属网络切片内的独占数据并进行对应的分析处理，生成相应的第二级分析报告，在此过程中不需要进行网络切片之间的数据交换。第一级NWDAF网元则可以进行多个网络切片间共享数据的收集和分析。
如此，相比于按照服务区域划分第二级NWDAF网元的方式，一方面便于实现网络切片间的网元的隔离需求，提升了数据安全性；另一方面，按照网络切片来划分第二级NWDAF网元更适用于移动终端在不同服务区域中切换的场景，减少了由于终端切换服务区导致的NWDAF服务中断，进而提升用户的使用感受。
此外，相对于一个或者多个第二级NWDAF网元负责一个服务区域，但服务区域内的数据分析需求具有多样性和不均衡性的问题，需要在一个服务区域内部署多个支持不同分析类型的NWDAF方式，为此，本公开实施例以网络切片的方式划分，每个第二级NWDAF网元负责一个网络切片的独占NF，从而实现了多个服务区域内NWDAF部署的数量减少，降低部署成本，提升使用效率。
在一些实施例中，所述第二级NWDAF网元服务独立的网络切片，且用于对所述网络切片独占的至少一个网络功能NF进行分析。
在本公开实施例中，第二级NWDAF网元仅用于服务独立的网络切片，可用于对所服务的独立网络切片中的一个或者多个NF的数据进行收集和分析处理等。因此，每个独立的网络切片可以与一个或者多个第二级NWDAF网元相对应。
对于待执行的第一类分析，可利用支持该分析的第二级NWDAF网元进行处理。
如此，第二级NWDAF网元在网络切片上实现了隔离，提升网络切片间数据的安全性和业务独立性，降低数据安全隐患。
在一些实施例中，所述第二级NWDAF网元，包括以下至少之一：
用于执行所述第一类分析得到所述第二级分析报告的第一类网元；
用于根据辅助NWDAF网元发送的分析报告执行分析得到所述第二级分析报告的第二类网元。
第二级NWDAF网元可以通过收集数据进行分析处理，也就是对收集的数据执行上述第一类分析得到对应的第二级分析报告。此外，第二级NWDAF网元之间还可以进行数据的交互，即辅助NWDAF网元也属于第二级NWDAF网元，用于辅助其他的第二级网元进行数据分析。
在一些实施例中，所述第一类网元，用于采集所述第一类分析对应的数据，并根据所述第一类分析对应的数据执行所述第一类分析；
所述第二类网元，用于采集所述第一类分析对应的数据及辅助NWDAF网元提供的数据，并执行所述第一类分析所述辅助NWDAF网元，用于采集第二类分析对应的数据，并根据所述第二类分析对应的数据执行所述第二类分析，得到所述第二级分析报告；其中，所述第二类分析为所述第一类分析的关联分析。
上述第二类网元则可以接收辅助NWDAF网元发送的分析报告，这里，辅助NWDAF网元发送的分析报告，可以为执行不同于第一类分析的第二类分析得到的分析报告。该分析报告可用于辅助上述第二类网元执行第一类分析，进而得到可发送至第一类网元的第二级分析报告。
也就是说，上述辅助NWDAF网元通过执行第二类分析得到的数据，辅助第二级NWDAF网元执行第一类分析。第二级NWDAF网元则在辅助NWDAF网元的帮助下制作分析报告。
如此，对于目标UE在同一网络切片中某一NF对应的数据，采用第一类网元进行分析，对于目标UE在不同NF或者不同网络切片间的相关数据，则可以通过上述第二类网元执行分析，实行不同NF或者不同网络 切片间数据的综合分析。
本公开实施例提供一种数据分析方法，如图3所示，所述方法包括：
步骤S201、基于所述第一类分析，从共享网元获取待分析的共享数据；
步骤S202、根据所述共享数据和所述第二级分析报告，向所述NWDAF用户发送所述第一级分析报告。
在本公开实施例中，第一级NWDAF网元用于对共享网元进行数据分析，因此可根据待执行的第一类分析从共享网元中获取数据，这些数据可以为共享数据。
此外，第一NWDAF网元还需要获得第二级NWDAF网元发送的分析报告，也就是各第二级NWDAF网元(一个或多个)针对各自网络切片的独占数据等分析得到的第二级分析报告。
如此，第一级NWDAF网元可根据共享数据以及第二级分析报告得到针对待执行的第一类分析的完整的第一级分析报告，从而上报给NWDAF用户，从而满足的分析需求。
在一些实施例中，所述共享网元包括以下至少之一：
共享NF；内部AF；第三方AF；OAM；NEF(Network Exposure Function，网络开放功能)。
这里，AF是指应用层的各种服务，可以为运营商内部的应用，也可以是第三方提供的如视频服务、游戏服务等等。
共享NF为各网络切片间共享的各种网络功能。
OAM则为网络的操作维护管理功能，是根据运营商网络运营的实际需求实现的，用于完成日常网络和业务的分析、预测、规划和配置工作，以及业务测试、故障管理等操作。
NEF为网络开放功能，位于核心网与外部第三方应用功能之间，负 责管理对外开放的网络数据，包括外部应用QoS定制能力开放、移动性状态事件订阅以及AF请求分发等功能。外部应用访问核心网内部数据则需要通过NEF。
在一些实施例中，所述第二级NWDAF网元用于获取独占NF数据，并根据所述独占NF数据向所述第一级NWDAF网元发送所述第二级分析报告。
在本公开实施例中，由于第二级NWDAF网元仅服务于一个网络切片，因此，第二级NWDAF网元用于获取网络切片内的独占NF数据，并生成相应的第二级分析报告。第二级NWDAF网元被第一级NWDAF网元订阅，因此第二级分析报告发送至第一级NWDAF网元后，由第一级NWDAF网元进行进一步的处理。
在一些实施例中，所述独占NF数据和所述第一级NWDAF网元从共享网元中获取的共享数据中携带有数据关联标识，所述数据关联标识用于标识各数据与所述目标UE的关联关系。
对于同一用户设备的业务数据，可能包含各种共享数据以及独占NF数据。因此，在进行同一分析时，需要将与该用户设备对应的业务数据进行关联，从而便于得到总体的分析结果。因此，上述待执行的第一类分析所对应的共享数据与独占NF数据中具有用于关联目标UE的数据关联标识。
如此，第一级NWDAF网元可根据收集的共享数据以及第二级NWDAF网元上报的关于独占NF数据的第二级分析报告，将与目标UE关联的数据进行统一的分析处理，并生成相应的第一级分析报告。
在一些实施例中，所述数据关联标识，包括以下至少一种：
目标UE的IP(Internet Protocol，网络协议)地址；IP五元组；时间戳；SUPI(Subscription Permanent Identifier，用户唯一永久身份标志)； DNN(Data Network Name，数据网络名称)；S-NSSAI(Single Network Slice Selection Assistance Information，网络切片唯一标识)；无线接入网络用户设备NG接口(接入网与5G核心网之间的接口)应用协议标识；AN(Access Network，接入网)隧道信息。
NWDAF网元可以从各个共享数据网元或者独占数据网元收集数据，同一个用户的数据常常分布在不同的网元上，为了获取用户端到端的数据，需要通过数据关联标识将从各个网元收集的数据关联起来。
在本公开实施例中，提供数据的网元包括但不限于SMF(Session Management Function，会话管理功能)、UPF(User plane Function，用户面功能)、AMF(Access and Mobility Management Function，接入及移动性管理功能)、PCF(Policy Control function，策略控制功能)、AF(Application Function，应用层功能)以及OAM(Operation Administration and Maintenance，操作维护管理)等。
这里，SMF为会话管理功能网元，SMF数据主要包含会话信息；UPF为用户面功能网元，UPF数据主要包含流信息；AMF为接入及移动性管理功能网元，AMF数据主要包含用户位置信息；PCF为策略控制功能网元，PCF数据主要包含策略信息；AF为应用层功能网元，AF数据主要包含业务信息；OAM为操作维护管理网元，来自RAN侧的OAM数据主要包含无线信道信息。
在本公开实施例中，各个网元的数据采用数据关联标识符进行关联可利用目标UE的IP地址；IP五元组；时间戳；SUPI；DNN；S-NSSAI；无线接入网络用户设备NG接口应用协议标识；AN隧道信息中的一种信息进行关联，也可利用两种或者两种以上信息进行关联。例如，利用终端IP地址和时间戳关联；利用IP五元组进行管理；利用SPUI和时间戳进行关联等等。
对于上述各种网元，本公开实施例提供如下一种示例性地关联方法：
1、SMF数据与UPF数据可以通过目标UE的IP地址以及时间戳关联；
2、UPF数据与AF数据可以通过IP五元组以及时间戳关联；
3、SMF数据与AMF数据可以通过SUPI以及时间戳关联；
4、SMF数据与PCF数据可以通过SUPI，DNN，S-NSSAI或者目标UE的IP地址关联；
5、AMF数据与OAM数据可以通过RAN UE NGAP ID以及时间戳关联；
6、UPF数据与OAM数据可以通过AN隧道信息以及时间戳关联；
7、SMF数据与AF数据可以通过应用ID、IP过滤信息以及时间戳关联。
其中，IP五元组为源IP地址，源端口，目的IP地址，目的端口和传输层协议；SUPI为5G网络中用户的唯一永久身份标志；DNN为数据网络名称；S-NSSAI为网络切片唯一标识；RAN UE NGAP ID为无线接入网络用户设备NG接口应用协议标识，RAN UE NGAP ID在NG-RAN节点内是唯一的；AN隧道信息包含端点IP地址和GTP隧道端点标识。
在一些实施例中，所述第二级NWDAF网元还用于接收辅助NWDAF网元发送的脱敏处理后的独占NF数据，所述辅助NWDAF网元用于对获取的独占NF数据进行脱敏处理，并将脱敏处理后的独占NF数据发送至所述第二级NWDAF网元。
在本公开实施例中，第二级NWDAF网元可能还需要辅助NWDAF网元的辅助来进行数据分析。因此，第二级NWDAF网元可以接收辅助NWDAF网元发送的独占NF数据。辅助NWDAF网元收集相应的独占NF数据后，为了减少网络切片之间的数据交互降低安全性的可能，因此 需要进行数据的脱敏处理，例如，去除独占NF数据中的敏感信息，或者进行适当的加密处理等等。
然后第二级NWDAF网元接收到辅助NWDAF网元提供的数据后，可以结合自身收集的独占NF数据进行综合处理，得到相应的第二级分析报告。
本公开实施例还提供一种数据分析方法，如图4所示，该方法应用于第一级NWDAF网元，包括：
步骤S301、接收所述NWDAF用户的第一请求；
步骤S302、根据所述第一请求，确定用于获取所述第二级分析报告的第二级NWDAF网元。
在本公开实施例中，NWDAF用户订阅第一级NWDAF网元，第一级NWDAF网元基于NWDAF用户的分析需求，获取相应的共享数据，并向NWDAF用户提供相应的分析报告。
此外第一级NWDAF网元还可以根据NWDAF用户的第一请求，确定需要进行对应数据分析的第二级NWDAF网元，从而便于从第二级NWDAF网元获取第二级分析报告，并基于第二级分析报告以及对共享数据共同得到NWDAF用户所需的第一级分析报告。
在一些实施例中，所述根据所述第一请求，确定用于获取所述第二级分析报告的第二级NWDAF网元，包括：
根据所述第一请求，从UDM获取所述第二级NWDAF网元的网元标识。
第一级NWDAF网元可以通过询问UDM确定目标UE所属网络切片的独占NF，因此，第一级NWDAF网元可以从UDM获取第二级NWDAF网元的网元标识，从而确定从哪个或者哪个第二级NWDAF网元获取相应的第二级分析报告。
需要说明的是，对于具有部分共享网元模式的网络切片，第一级NWDAF网元针对该网络切片内共享网元的共享数据进行采集和分析处理，第二级NWDAF网元用于获取并分析处理该网络切片内独占网元的数据。同时，第一级NWDAF网元还用于获取第二级NWDAF网元的分析报告。
示例性地，各个网络切片共享AMF、UDM以及PCF等网元，每个网络切片拥有独占的UPF和SMF网元，则每个第二级NWDAF网元服务于一个网络切片的独占NF。例如，目标UE属于网络切片1，则为其服务的独占NF为UPF 1和SMF 1。
对于完全共享网元模式的网络切片，第一级NWDAF网元可以对该网络切片内所有的网元进行数据的收集和处理，此时针对该网络切片则不需要使用第二级NWDAF网元。
对于完全独占网元模式的网络切片，切片内的网元完全独立，因此对于该网络切片内的数据均需通过第二级NWDAF网元进行收集和处理。此时，对于第一级NWDAF网元则不存在针对该网络切片的需要进行处理的数据。
在一些实施例中，所述第一请求包括以下至少之一：
所述第一类分析的标识信息；
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
在本公开实施例中，NWDAF用户订阅第一级NWDAF网元，在发送的第一请求中，可以包含需要执行的第一类分析的相关标识信息，第一级NWDAF网元则可根据标识信息确定需要执行的第一类分析以及需要采集的数据等。
此外，第一请求还可以包含目标UE的标识信息，从而使得第一级 NWDAF网元针对目标UE采集相关数据，最终得到目标UE基于第一类分析的分析报告。
针对上述第一类分析还可包括相关联的第二类分析，第二类分析可以由第一级NWDAF网元执行，也可以由第二级NWDAF网元执行。第一请求中包含第二类分析的标识信息，第一级NWDAF网元则根据该标识信息确定由自身执行或者确定相应的第二级NWDAF网元来执行该第二类分析。
如此，第一级NWDAF网元根据第一请求可确定需要执行的各项分析，从而与相关的第二级NWDAF网元共同完成数据的采集分析和处理过程，得到NWDAF用户所需的第一级分析报告。
在一些实施例中，所述根据所述第一请求，从UDM获取所述第二级NWDAF网元的网元标识，包括：
根据所述第一请求，从所述UDM确定目标UE所属网络切片的独占NF的信息；
根据所述独占NF的信息，从注册在NRF网元的第二级NWDAF网元中，确定服务于所述目标UE所属网络切片的第二级NWDAF网元的网元标识。
在本公开实施例中，第一级NWDAF网元和第二级NWDAF网元均注册到NRF中，第一级NWDAF网元可以从NRF中注册第二级NWDAF网元以获取对应的第二级分析报告。因此，第一级NWDAF网元可以根据第一请求确定目标UE所属网络切片的独占NF的信息，也就是确定需要对哪个或者哪些独占NF的数据进行分析处理。因此，第一级NWDAF网元可以从NRF中注册的第二级NWDAF网元确定相应的第二级NWDAF网元执行对应的数据采集和分析处理。
本公开实施例还提供一种数据分析方法，如图5所示，该方法应用 于第一级NWDAF网元，包括：
步骤S401、根据所述第二级NWDAF网元的网元标识，向所述第二级NWDAF网元发送第二请求，其中，所述第二请求用于供所述第二级NWDAF网元上报分析数据。
这里，第一级NWDAF网元可以订阅需要获取相应数据的第二级NWDAF网元，因此第一级NWDAF网元根据从NRF确定的第二级NWDAF网元的网元标识，向第二级NWDAF网元发送第二请求，从而订阅第二级NWDAF网元的分析报告。
在一些实施例中，所述第二请求包括以下至少之一：
所述第一类分析的标识信息；
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
第二请求与第一请求的功能类似，用于告知第二级NWDAF网元需要执行的第一类分析和/或与第一类分析关联的第二类分析，以及待执行分析的目标UE等等。从而便于第二级NWDAF网元根据第二请求执行相应的分析，并将分析报告提供给第一级NWDAF网元。
在一些实施例中，所述第二级NWDAF网元还用于向辅助NWDAF网元发送第三请求；其中，所述第三请求包括以下至少之一：
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
由于同一第二级NWDAF网元仅服务于一个网络切片的独占NF，而对于NWDAF消费者所需的分析报告可能需要多个网络切片的数据相关联的分析，因此，部分第二级NWDAF网元可以通过辅助NWDAF网元的辅助，获取相关联的数据分析报告。
因此，第二级NWDAF网元可以通过向辅助NWDAF网元发送第三 请求获取相应的数据分析报告。
由于第二级NWDAF网元订阅的辅助NWDAF网元不需要执行第一类分析，而是执行与第一类分析关联的第二类分析，因此，第三请求中可以包含与辅助NWDAF网元进行分析相关联的信息，包括目标UE的标识信息以及第二类分析的标识信息等等。
在一些实施例中，所述第一请求为：所述NWDAF用户向注册在NRF网元的第一级NWDAF网元发送的第一请求。
在本公开实施例中，第一级NWDAF网元以及第二级NWDAF网元可注册至NRF网元。在NWDAF用户需要获取目标UE关于第一类分析的分析报告时，则可以从NRF网元注册的各级NWDAF网元中，确定需要执行第一类分析以及相关联的第二类分析的网元。
在一实施例中，NWDAF用户可向NRF网元发送分析请求，并获取NRF网元发送的分析请求响应。NWDAF用户可基于该分析响应，确定执行分析的第一级NWDAF网元以及第二级NWDAF网元，进而向第一级NWDAF网元发送第一请求以订阅该第一级NWDAF网元。
在一些实施例中，所述NRF用于接收所述NWDAF用户发送的分析请求，并根据所述分析请求向所述NWDAF用户发送分析请求响应；其中，所述分析请求包括所述第一类分析的标识信息；所述分析请求响应用于供所述NWDAF用户确定向所述第一级NWDAF网元发送所述的第一请求。
在本公开实施例中，NRF为网络仓储功能，用来进行NF登记、管理、状态检测以及实现所有NF的自动化管理。每个NF启动时，必须要到NRF进行注册登记才能提供服务，登记信息包括NF类型、地址以及服务列表等。
因此，在本公开实施例中，NWDAF用户可以向NRF发送分析请求， NRF则做出分析请求响应，给出能够执行分析的各NWDAF网元的相关信息。NWDAF用户则向NRF发送对应的订阅请求，订阅能够提供所需分析报告的NWDAF网元。
在一些实施例中，所述NRF注册的NWDAF网元，至少包括：所述第一级NWDAF网元和所述第二级NWDAF网元。
第一级NWDAF网元以及第二级NWDAF网元可注册在NRF，从而便于NRF在获得分析请求时根据注册的NWDAF网元做出分析请求响应。
如图6所示，本公开实施例提供一种无线网络的数据分析方法，所述方法应用于第二级NWDAF网元，包括：
步骤S501、根据待执行的第一类分析，向第一级NWDAF网元发送第二级分析报告；其中，所述第二级NWDAF网元与所述第一类分析对应的目标UE所属网络切片具有对应关系；所述第一级NWDAF网元用于根据所述第二级分析报告向NWDAF用户发送第一级分析报告；所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
在本公开实施例中，部署了两级分层NWDAF架构，并在此架构上开展无线网络数据收集和关联以及分析订阅和结果反馈等工作。在本公开实施例中，第一级NWDAF网元服务多个网络切片的共享网元，第二级NWDAF网元服务单个网络切片的独享网元，且多个第二级NWDAF网元可以服务同一网络切片的独享网络功能。
这里，网络切片是一种按需组网的方式，可以让运营商在统一的基础设施上分离出多个虚拟的端到端网络，每个网络切片从无线接入网到承载网再到核心网上进行逻辑隔离，从而适配各种类型的业务。
在本公开实施例中，NWDAF用户即NWDAF服务消费者，用于提 出数据分析的需求，即需要针对目标UE执行上述第一类分析，那么第一级NWDAF网元及第二级NWDAF网元则根据待执行的第一类分析进行数据的收集和分析，并生成相应的分析报告。NWDAF用户则可根据分析报告进行对应的网络参数调整，进而实现网络优化。
NWDAF用户所订阅的NWDAF网元为第一级NWDAF网元，因此，第一级NWDAF网元将第一级分析报告发送至NWDAF用户。而第一级NWDAF网元订阅的是第二级NWDAF网元，因此，第二级NWDAF网元将分析得到的第二级分析报告发送至第一级NWDAF网元，并由第一级NWDAF网元进行进一步处理生成最终的第一级分析报告。
在本公开实施例中，由于第二级NWDAF网元为与网络切片具有对应关系的NWDAF网元，因此具有网络切片数据的独占性。第二级NWDAF网元收集所属网络切片内的独占数据并进行对应的分析处理，生成相应的第二级分析报告，在此过程中不需要进行网络切片之间的数据交换。第一级NWDAF网元则可以进行多个网络切片间共享数据的收集和分析。
如此，相比于按照服务区域划分第二级NWDAF网元的方式，一方面便于实现网络切片间的网元的隔离需求，提升了数据安全性；另一方面，按照网络切片来划分第二级NWDAF网元更适用于移动终端在不同服务区域中切换的场景，减少了由于终端切换服务区导致的NWDAF服务中断，进而提升用户的使用感受。
此外，相对于一个或者多个第二级NWDAF网元负责一个服务区域，但服务区域内的数据分析需求具有多样性和不均衡性的问题，需要在一个服务区域内部署多个支持不同分析类型的NWDAF方式，为此，本公开实施例以网络切片的方式划分，每个第二级NWDAF网元负责一个网络切片的独占NF，从而实现了多个服务区域内NWDAF部署的数量减少， 降低部署成本，提升使用效率。
在一些实施例中，所述第二级NWDAF网元服务独立的网络切片，且用于对所述网络切片独占的至少一个网络功能NF进行分析。
在本公开实施例中，第二级NWDAF网元仅用于服务独立的网络切片，可用于对所服务的独立网络切片中的一个或者多个NF的数据进行收集和分析处理等。因此，每个独立的网络切片可以与一个或者多个第二级NWDAF网元相对应。
对于待执行的第一类分析，可利用支持该分析的第二级NWDAF网元进行处理。
如此，第二级NWDAF网元在网络切片上实现了隔离，提升网络切片间数据的安全性和业务独立性，降低数据安全隐患。
在一些实施例中，所述第二级NWDAF网元，包括以下至少之一：
用于执行所述第一类分析得到所述第二级分析报告的第一类网元；
用于根据辅助NWDAF网元发送的分析报告执行分析得到所述第二级分析报告的第二类网元。
第二级NWDAF网元可以通过收集数据进行分析处理，也就是对收集的数据执行上述第一类分析得到对应的第二级分析报告。此外，第二级NWDAF网元之间还可以进行数据的交互，即辅助NWDAF网元也属于第二级NWDAF网元，用于辅助其他的第二级网元进行数据分析。
上述第二类网元则可以接收辅助NWDAF网元发送的分析报告，这里，辅助NWDAF网元发送的分析报告，可以为执行不同于第一类分析的第二类分析得到的分析报告。该分析报告可用于辅助上述第二类网元执行第一类分析，进而得到可发送至第一类网元的第二级分析报告。
也就是说，上述辅助NWDAF网元通过执行第二类分析得到的数据，辅助第二级NWDAF网元执行第一类分析。第二级NWDAF网元则在辅 助NWDAF网元的帮助下制作分析报告。
如此，对于目标UE在同一网络切片中某一NF对应的数据，采用第一类网元进行分析，对于目标UE在不同NF或者不同网络切片间的相关数据，则可以通过上述第二类网元执行分析，实行不同NF或者不同网络切片间数据的综合分析。
在一些实施例中，所述第一类网元，用于采集所述第一类分析对应的数据，并根据所述第一类分析对应的数据执行所述第一类分析；
所述第二类网元用于，用于采集所述第一类分析对应的数据，并根据所述第二级分析报告和所述第一类分析对应的数据执行所述第一类分析；
所述辅助NWDAF网元，用于采集第二类分析对应的数据，并根据所述第二类分析对应的数据执行所述第二类分析，得到所述第二级分析报告；其中，所述第二类分析为所述第一类分析的关联分析。
在一些实施例中，所述第二级NWDAF网元用于获取独占NF数据，并根据所述独占NF数据向所述第一级NWDAF网元发送所述第二级分析报告。
在本公开实施例中，由于第二级NWDAF网元仅服务于一个网络切片，因此，第二级NWDAF网元用于获取网络切片内的独占NF数据，并生成相应的第二级分析报告。第二级NWDAF网元被第一级NWDAF网元订阅，因此第二级分析报告发送至第一级NWDAF网元后，由第一级NWDAF网元进行进一步的处理。
在一些实施例中，所述第二级NWDAF网元还用于接收辅助NWDAF网元发送的脱敏处理后的独占NF数据，所述辅助NWDAF网元用于对获取的独占NF数据进行脱敏处理，并将脱敏处理后的独占NF数据发送至所述第二级NWDAF网元。
在本公开实施例中，第二级NWDAF网元可能还需要辅助NWDAF网元的辅助来进行数据分析。因此，第二级NWDAF网元可以接收辅助NWDAF网元发送的独占NF数据。辅助NWDAF网元收集相应的独占NF数据后，为了减少网络切片之间的数据交互降低安全性的可能，因此需要进行数据的脱敏处理，例如，去除独占NF数据中的敏感信息，或者进行适当的加密处理等等。
然后第二级NWDAF网元接收到辅助NWDAF网元提供的数据后，可以结合自身收集的独占NF数据进行综合处理，得到相应的第二级分析报告。
在一些实施例中，所述方法还包括：
接收所述第一级NWDAF网元根据所述第二级NWDAF网元的网元标识发送的第二请求，其中，所述第二请求用于供所述第二级NWDAF网元上报分析数据。
这里，第一级NWDAF网元可以订阅需要获取相应数据的第二级NWDAF网元，因此第一级NWDAF网元根据从NRF确定的第二级NWDAF网元的网元标识，向第二级NWDAF网元发送第二请求。第二级NWDAF网元则基于接收到的第二请求，向第一级NWDAF网元发送相应的分析报告。
在一些实施例中，所述第二请求包括以下至少之一：
所述第一类分析的标识信息；
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
第二请求与第一请求的功能类似，用于告知第二级NWDAF网元需要执行的第一类分析和/或与第一类分析关联的第二类分析，以及待执行分析的目标UE等等。从而便于第二级NWDAF网元根据第二请求执行 相应的分析，并将分析报告提供给第一级NWDAF网元。
在一些实施例中，所述方法还包括：
向辅助NWDAF网元发送第三请求；其中，所述第三请求包括以下至少之一：
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
由于同一第二级NWDAF网元仅服务于一个网络切片的独占NF，而对于NWDAF消费者所需的分析报告可能需要多个网络切片的数据相关联的分析，因此，部分第二级NWDAF网元可以通过辅助NWDAF网元的辅助，获取相关联的数据分析报告。
因此，第二级NWDAF网元可以通过向辅助NWDAF网元发送第三请求获取相应的数据分析报告。
由于第二级NWDAF网元订阅的辅助NWDAF网元不需要执行第一类分析，而是执行与第一类分析关联的第二类分析，因此，第三请求中可以包含与辅助NWDAF网元进行分析相关联的信息，包括目标UE的标识信息以及第二类分析的标识信息等等。
本公开实施例提供一种无线网络的数据分析系统，所述系统包括：
第一级NWDAF网元，用于为多个网络切片内共享网元的共享数据进行数据分析；
至少一个第二级NWDAF网元，用于为所述第一级NWDAF网元服务范围内各网络切片的独占NF进行数据分析；其中，所述第二级NWDAF网元与网络切片具有对应关系。
NWDAF是一个数据感知分析网元，以网络数据为基础对网络进行自动感知和分析，并参与到网络规划、建设、运维、网络优化以及运营全生命周期中，使得网络易于维护和控制，提高网络资源使用效率，提 升用户业务体验。NWDAF可以从NF、AF以及OAM收集原始数据，并对原始数据进行智能分析，将分析结果反馈给NF、AF以及OAM等，用于优化网络和业务。在NWDAF工作的周期中，数据收集的效率、不同维度数据的融合方式等因素对分析反馈的效率以及网络智能化运营和业务的性能有着重大的影响。因此，本公开实施例利用NWDAF实现高效的数据收集和数据关联方法。
在本公开实施例中，部署了两级分层NWDAF架构，并在此架构上开展无线网络数据收集和关联以及分析订阅和结果反馈等工作。在本公开实施例中，第一级NWDAF网元服务多个网络切片的共享网元，第二级NWDAF网元为单个网元切片的独享网元服务，且多个第二级NWDAF网元可以为同一网络切片的独享网络功能服务。
如此，相比于按照服务区域划分第二级NWDAF网元的方式，一方面便于实现网络切片件的网元的隔离需求，提升了数据安全性；另一方面，按照网络切片来划分第二级NWDAF网元更适用于移动终端在不同服务区域中切换的场景，减少了由于终端切换服务区导致的NWDAF服务终端，进而提升用户的使用感受。
在一些实施例中，所述第二级NWDAF网元，还用于：
对所述独占NF进行数据分析得到第二级分析报告，并发送至所述第一级NWDAF网元；
所述第一级NWDAF网元，还用于接收所述第二级分析报告，并根据所述第二级分析报告和所述共享数据进行分析得到第一级分析报告。
在本公开实施例中，第二级NWDAF网元对其所服务的网络切片中的独占NF进行数据分析，并得到第二级分析报告，而第一级NWDAF网元可以对多个网络切片的共享数据进行采集和分析，还可以对第二级NWDAF网元上报的第二级分析报告进行处理。
因此，第一级NWDAF网元得到的第一级分析报告是根据对共享数据和第二级分析报告的综合分析处理得到的。
在一些实施例中，所述系统还包括：
NWDAF用户603，用于根据所述第一级分析报告调整对应的网络参数。
这里，NWDAF用户可订阅第一级NWDAF网元，获取第一级NWDAF网元提供的第一级分析报告，从而针对目标UE相关的情况对网络参数进行调整，优化网络状态。
在一些实施例中，所述系统还包括：
NRF，用于注册所述第一级NWDAF网元和所述第二级NWDAF网元，并根据所述NWDAF用户发送的分析请求，确定执行分析的所述第一级NWDAF网元和所述第二级NWDAF网元；
所述NWDAF用户，还用于向所述NRF发送分析请求。
在本公开实施例中，第一级NWDAF网元以及第二级NWDAF网元可注册至NRF网元。在NWDAF用户需要获取目标UE关于第一类分析的分析报告时，则可向NRF网元发送分析请求，并基于NRF网元发送的分析请求响应，向NRF网元从注册的NWDAF网元中确定执行分析的第一级NWDAF网元以及第二级NWDAF网元。NWDAF用户则可根据分析请求响应向对应的第一级NWDAF网元发送上述第一请求。
在一些实施例中，所述系统还包括：
所述多个网络切片内的共享网元，用于向所述第一级NWDAF网元提供数据；其中，所述共享网元包括以下至少之一：NF；AF；OAM；
各所述网络切片的独占NF，用于向所述第二级NWDAF网元提供数据。
多个网络切片具有共享网元，提供多个网络切片内的共享数据，第 一级NWDAF网元服务于多个网络切片，因此可以获取共享网元提供的数据，并进行数据分析和处理。
由于第二级NWDAF网元服务于单一的网络切片，因此可以对单一网络切片内的独占NF数据进行采集和分析处理。
本公开实施例还提供如下示例：
如图7所示，为本公开实施例提供的一种无线网络数据收集和关联方法对应的的系统架构示意图，该系统包含如下网元：NRF、第一级NWDAF、第二级NWDAF、NWDAF用户、NF、AF以及OAM。
其中第二级NWDAF为不同的网络切片服务，5G核心网元支持不同层级的按需隔离模式，来保证不同切片间的业务独立性。隔离模式包括：
1、完全共享模式：适用于公众网的普通消费者业务，各个网络切片共享所有网元；
2、部分独占模式：适用于普通行业网，部分网元共享、部分网元独占；
3、完全独占模式：适用于VIP行业网，独占所有网元，能力等同于一张完整的行业专用核心网。
在本公开实施例中，为每个网络切片配置一个或多个第二级NWDAF，为该网络切片的独占网元服务，第一级NWDAF为多个网络切片的共享网元服务。
各级NWDAF注册到NRF，NWDAF用户以分析ID订阅第一级NWDAF。第一级NWDAF可以从OAM、AF以及各个网络切片的共享NF获取数据。第二级NWDAF只能从其服务的独占网元获取数据。两个不同的第二级NWDAF可能服务于同一组独占NF。
如图8所示，为本公开实施例提供的一种无线网络数据收集和关联方法对应的流程示意图，该方法包括如下步骤：
步骤S801，第一级NWDAF注册到NRF，注册信息包含所支持的分析ID以及所服务的多个网络切片信息。第二级NWDAF注册到NRF，注册信息包含所支持的分析ID和所服务网络切片以及独占NF信息，使用NF信息注册隐式表明这是一个第二级NWDAF。
步骤S802，NWDAF用户向NRF发送分析请求，包含所需的分析ID，记为分析ID 1。
步骤S803，NRF向NWDAF用户发送请求响应，包含符合要求的第一级NWDAF，NWDAF用户订阅第一级NWDAF。
进一步的，步骤S803包含如下步骤：
步骤S31，NRF向NWDAF用户发送请求响应，包含支持分析ID 1的第一级NWDAF的标识。
步骤S32，NWDAF以所需分析ID订阅请求响应中的第一级NWDAF，订阅请求中包括目标UE ID、关联分析ID，即对所需分析类型有帮助的分析类型对应的分析ID，记为分析ID 2。
步骤S804，第一级NWDAF确定从哪些网元收集数据以及各网元数据的收集方式，并订阅第二级NWDAF，各级NWDAF完成数据收集和数据关联。
进一步的，步骤S804包含如下步骤：
步骤S41，第一级NWDAF以分析ID 1订阅第二级NWDAF，订阅信息包含目标UE ID和关联分析ID 2。
步骤S42，第二级NWDAF以分析ID 2订阅辅助第二级NWDAF，辅助第二级NWDAF支持分析ID 2。
步骤S43，第一级NWDAF从OAM、AF、共享NF中获取数据，第二级NWDAF从所服务的独占NF中获取数据。
步骤S44，各级NWDAF依据数据关联标识对所收集的数据进行关 联，得到用户端到端的数据。
步骤S805，第二级NWDAF采用收集的数据以及辅助第二级NWDAF的分析报告来执行分析，并将分析报告发送给第一级NWDAF。
进一步的，步骤S805包含如下步骤：
步骤S51，辅助第二级NWDAF采用收集的数据执行分析ID 2的分析，并将分析报告发送给订阅其分析的第二级NWDAF 1。
步骤S52，第二级NWDAF采用收集的数据执行分析ID 1的分析，并以辅助NWDAF的分析报告为辅助。执行分析完毕后将分析报告发送给第一级NWDAF。
步骤S806，第一级NWDAF采用收集的数据、以所订阅第二级NWDAF的分析报告为辅助执行分析，并将分析报告发送给NWDAF用户。
如图9所示，为本公开实施例提供的一种无线网络数据收集和关联方法中网络数据收集和关联的流程示意图，该方法包括如下步骤：
步骤S901，第一级NWDAF通过询问UDM确定目标UE所属网络切片的独占NF。
一种实施例中，各个网络切片共享AMF、UDM、PCF等网元，每个网络切片拥有独占的UPF和SMF网元，则每个第二级NWDAF服务于一个网络切片的独占NF。如目标UE属于网络切片1，则为其服务的独占NF为UPF 1和SMF 1。
步骤S902，第一级NWDAF查询NRF中第二级NWDAF的注册信息，找到服务于目标UE所属网络切片且支持所需分析类型的第二级NWDAF，获取该第二级NWDAF支持的分析ID，以及其服务的独占NF信息。
一种实施例中，第二级NWDAF 1支持分析ID1、服务于目标UE所 属网络切片的独占NF；第二级NWDAF 2支持分析ID2、服务于目标UE所属网络切片的独占NF；第二级NWDAF N支持分析ID1、不服务于目标UE所属网络切片。
步骤S903，第一级NWDAF以所需分析ID订阅满足条件的第二级NWDAF，并提供服务于目标UE所属网络切片且支持关联分析类型的辅助第二级NWDAF的信息。
进一步的，步骤S903包含如下步骤：
步骤S31，第一级NWDAF以分析ID 1订阅第二级NWDAF 1，订阅信息包含目标UE ID、关联分析ID(分析ID2)，并提供服务于目标UE所属网络切片、支持分析ID2的第二级NWDAF 2的标识符。
步骤S32，第一级NWDAF以分析ID 1订阅第二级NWDAF N，订阅信息包含目标UE ID、关联分析ID(分析ID2)。
步骤S904，第二级NWDAF 1以分析ID2订阅第二级NWDAF 2，订阅信息包含目标UE ID。
步骤S905，第一级NWDAF从OAM、AF、NF中收集数据，第二级NWDAF从所服务的NF中收集数据。
进一步的，步骤S905包含如下步骤：
步骤S51，第一级NWDAF从共享NF/内部AF收集数据。
步骤S52，第一级NWDAF从OAM收集数据。
步骤S53，第一级NWDAF通过NEF收集第三方AF的数据。
步骤S54，第二级NWDAF从所服务的独占NF收集数据。
以上步骤S51-54不分顺序，可同时进行。
步骤S906，各级NWDAF采用数据关联标识对所收集的数据进行数据关联。
步骤S907，各个第二级NWDAF依据本切片的数据隐私保护规则对 数据进行脱敏处理，当其余NWDAF请求收集本切片内独占网元的数据时，发送处理后的数据。
如图10所示，为本公开实施例提供的一种无线网络数据收集和关联方法中数据关联标识符的示意图。NWDAF可以从各个网元收集数据，同一个用户的数据常常分布在不同的网元上，为了获取用户端到端的数据，需要通过数据关联关联标识将从各个网元收集的数据关联起来，下面将结合附图介绍从核心网网元SMF、UPF、AMF、PCF以及AF和OAM获取到的数据的关联方法，具体如下：
NWDAF从各个网元收集的主要信息如下：
1、SMF为会话管理功能网元，SMF数据主要包含会话信息；
2、UPF为用户面功能网元，UPF数据主要包含流信息；
3、AMF为接入及移动性管理功能网元，AMF数据主要包含用户位置信息；
4、PCF为策略控制功能网元，PCF数据主要包含策略信息；
5、AF为应用层功能网元，AF数据主要包含业务信息；
6、OAM为操作维护管理网元，来自RAN侧的OAM数据主要包含无线信道信息。
各个网元的数据采用数据关联标识符进行关联的方法如下：
1、SMF数据和UPF数据与UPF数据可以通过终端IP地址以及时间戳关联；
2、UPF数据与AF数据可以通过IP五元组以及时间戳关联；
3、SMF数据与AMF数据可以通过SUPI以及时间戳关联；
4、SMF数据与PCF数据可以通过SUPI，DNN，S-NSSAI或者终端IP地址关联；
5、AMF数据与OAM数据可以通过RAN UE NGAP ID以及时间戳 关联；
6、UPF数据与OAM数据可以通过AN隧道信息以及时间戳关联；
7、SMF数据与AF数据可以通过应用ID、IP过滤信息以及时间戳关联。
其中，IP五元组为源IP地址，源端口，目的IP地址，目的端口和传输层协议；SUPI为5G网络中用户的唯一永久身份标志；DNN为数据网络名称；S-NSSAI为网络切片唯一标识；RAN UE NGAP ID为无线接入网络用户设备NG接口应用协议标识，RAN UE NGAP ID在NG-RAN节点内是唯一的；AN隧道信息包含端点IP地址和GTP隧道端点标识。
如图11所示，为本公开实施例提供的一种无线网络数据收集和关联方法中NWDAF注册和分析订阅部分的协议和接口原理图，主要涉及系统中的NWDAF用户、NRF、第一级NWDAF、第二级NWDAF 1、第二级NWDAF 2以及第二级NWDAF N。具体如下：
1a、第一级NWDAF注册到NRF，注册信息中包含第一级NWDAF支持的分析ID。
一种实施例中，第一级NWDAF支持分析ID1和分析ID2。
1b、第二级NWDAF N注册到NRF，注册信息中包含第二级NWDAF N支持的分析ID和它所服务的网络切片以及对应的独占NF ID。
一种实施例中，第二级NWDAF N支持分析ID 1，服务于网络切片1，对应独占NF m1,…,独占NF mj。
1c、第二级NWDAF 2注册到NRF，注册信息中包含第二级NWDAF 2支持的分析ID和它所服务网络切片以及对应的独占NF ID。
一种实施例中，第二级NWDAF 2支持分析ID 2，服务于网络切片2，对应独占NF l1,…,独占NF lj。
1d、第二级NWDAF 1注册到NRF，注册信息中包含第二级NWDAF  1支持的分析ID和它所服务网络切片以及对应的独占NF ID。
一种实施例中，第二级NWDAF 1支持分析ID1，服务于网络切片2，对应独占NF l1,…,独占NF lj。
2a、NWDAF用户发送分析请求消息给NRF，分析请求消息中包含所需的分析ID。
一种实施例中，NWDAF用户所需的分析ID为分析ID 1。
2b、NRF从注册的NWDAF中选择支持分析请求消息中分析ID的第一级NWDAF。
2c、NRF发送分析请求响应消息给NWDAF用户，分析请求响应消息中包含符合要求的第一级NWDAF的标识符。
3、NWDAF用户通过Nnwdaf AnalyticsSubscription Subscribe服务请求订阅第一级NWDAF，分析订阅请求消息包括分析ID 1、目标UE ID、关联分析ID。
一种实施例中，分析ID 1的关联分析ID为分析ID 2。
4、第一级NWDAF通过询问UDM确定目标UE所属网络切片，找到为目标UE服务的独占网元，然后根据第二级NWDAF的注册信息中第二级NWDAF支持的分析ID以及所服务的独占NF，确定需要订阅的第二级NWDAF。
一种实施例中，第二级NWDAF 1支持分析ID1、服务于目标UE所属网络切片的独占NF；第二级NWDAF 2支持分析ID2、服务于目标UE所属网络切片的独占NF；第二级NWDAF N支持分析ID1、不服务于目标UE所属网络切片的独占NF。则第一级NWDAF需要订阅支持分析ID 1的第二级NWDAF 1和第二级NWDAF N。
5a、第一级NWDAF通过Nnwdaf AnalyticsSubscription Subscribe服务请求订阅第二级NWDAF 1，分析订阅请求消息中包含分析ID 1、目标 UE ID、关联分析ID 2、以及支持关联分析ID且服务于目标UE所属独占NF的第二级NWDAF的标识符，即第二级NWDAF 2。
5b、第一级NWDAF通过Nnwdaf AnalyticsSubscription Subscribe服务请求订阅第二级NWDAF N，分析订阅请求消息中包含分析ID 1、目标UE ID和关联分析ID 2。
6、第二级NWDAF 1通过Nnwdaf AnalyticsSubscription Subscribe服务请求订阅NWDAF 2，分析订阅请求消息中包含分析ID 2、目标UE ID。
如图12所示，为本公开实施例提供的一种无线网络数据收集和关联方法中网元数据收集和关联部分的协议和接口原理图，主要涉及系统中的第三方AF、NRF、NEF、OAM、NF、AF、第一级NWDAF以及第二级NWDAF。图中将NRF和NEF以及NF和内部AF合设为一个部分是为了画图更清晰，具体描述时会展开解释。具体如下：
1a、第一级NWDAF通过Nnf EventExposure Subscribe/Naf EventExposure Subscribe服务向共享NF/内部AF订阅功能网元的事件。
1b、NF/内部AF准备订阅事件对应的数据。
1c、NF/内部AF如果准备好了数据，则通过Nnf/Naf EventExposure Notify服务给第一级NWDAF提供订阅事件的数据。
2a、第一级NWDAF发送订阅网管数据消息给OAM。
2b、OAM发送通知订阅成功消息给第一级OAM。
2c、OAM准备网管数据。
2d、OAM发送通知网管数据准备完毕消息给第一级NWDAF，并告诉第一级NWDAF数据存储地址。第一级NWDAF通过FTP从存储地址取到OAM数据。
3a、第三方AF通过NEF将数据信息注册到NRF。
3b、第一级NWDAF发送AF数据发现消息给NRF，从NRF中的数 据注册信息中寻找可提供所需数据的第三方AF。
3c、第一级NWDAF通过Nnef EventExposure Subscribe服务向NEF订阅NEF事件。
3d、NEF通过Naf EventExposure Subscribe服务向AF订阅AF事件。
3e、AF通过Naf EventExposure Notify服务给NEF提供订阅事件的数据。
3f、NEF通过Nnef EventExposure Notify服务给第一级NWDAF提供订阅事件的数据。
4a、第二级NWDAF通过Nnf EventExposure Subscribe服务向独占NF订阅功能网元的事件。
4b、独占NF准备订阅事件对应的数据。
4c、独占NF如果准备好了数据，则通过Nnf EventExposure Notify服务给第二级NWDAF提供订阅事件的数据。
5、各级NWDAF以及数据标识符关联来自不同NF、AF以及OAM的数据，实现用户数据端到端的关联。
6、当其他NWDAF请求本网络切片独占网元的数据时，由相应的第二级NWDAF进行数据收集，并依据本切片的数据隐私保护规则对数据进行脱敏处理。
其中，步骤1a-1c为第一级NWDAF从共享NF/内部AF收集数据的过程，步骤2a-2d为第一级NWDAF从OAM收集数据的过程，步骤3a-3f为第一级NWDAF从第三方AF收集数据的过程，步骤4a-4c为第二级NWDAF从所服务的独占NF收集数据的过程。以上四个过程不分先后顺序，可以同时进行。
如图13所示，为本公开实施例提供的一种无线网络数据收集和关联方法中NWDAF执行分析和结果反馈部分的协议和接口原理图。依据需 要，各个NWDAF间的协作可以规定订阅该NWDAF收集的数据或者是分析结果。以下以分析报告为例进行说明：
1、第二级NWDAF 2采用收集的数据执行分析ID 2的分析。
2、第二级NWDAF 2通过Nnwdaf AnalyticsSubscription Notify服务将分析结果报告发送给第二级NWDAF 1。
3、第二级NWDAF 1在第二级NWDAF 2发送的分析报告的帮助下、采用收集的数据执行分析ID 1的分析。
4、第二级NWDAF 1通过Nnwdaf AnalyticsSubscription Notify服务将分析结果报告发送给第一级NWDAF。
5、第二级NWDAF N采用收集的数据执行分析ID 1的分析。
6、第二级NWDAF N通过Nnwdaf AnalyticsSubscription Notify服务将分析结果报告发送给第一级NWDAF。
7、第一级NWDAF在第二级NWDAF 1、N发送的分析报告的帮助下、采用收集的数据执行分析ID 1的分析。
8、第一级NWDAF通过Nnwdaf AnalyticsSubscription Notify服务将分析结果报告发送给NWDAF用户。
9、NWDAF用户依据分析结果报告触发网络和业务优化策略调整。
如图14所示，本公开实施例还提供一种无线网络的数据分析装置1400，应用于第一级NWDAF网元，包括：
第一获取模块1401，配置为根据待执行的第一类分析，获取与目标用户设备UE所属网络切片具有对应关系的第二级NWDAF网元发送的第二级分析报告；
第一发送模块1402，配置为根据所述第二级分析报告，向NWDAF用户发送第一级分析报告，其中，所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
在一些实施例中，所述第二级NWDAF网元服务独立的网络切片，且用于对所述网络切片独占的至少一个网络功能NF进行分析。
在一些实施例中，所述第二级NWDAF网元，包括以下至少之一：
用于执行所述第一类分析得到所述第二级分析报告的第一类网元；
用于根据辅助NWDAF网元发送的分析报告执行分析得到所述第二级分析报告的第二类网元。
在一些实施例中，所述第一类网元，用于采集所述第一类分析对应的数据，并根据所述第一类分析对应的数据执行所述第一类分析；
所述第二类网元，用于采集所述第一类分析对应的数据及辅助NWDAF网元提供的数据，并执行所述第一类分析；所述辅助NWDAF网元，用于采集第二类分析对应的数据，并根据所述第二类分析对应的数据执行所述第二类分析，得到所述第二级分析报告；其中，所述第二类分析为所述第一类分析的关联分析。
在一些实施例中，所述装置还包括：
第二获取模块，配置为基于所述第一类分析，从共享网元获取待分析的共享数据；
第二发送模块，配置为所述根据所述第二级分析报告，向NWDAF用户发送第一级分析报告，包括：
根据所述共享数据和所述第二级分析报告，向所述NWDAF用户发送所述第一级分析报告。
在一些实施例中，所述共享网元包括以下至少之一：
共享NF；内部AF；第三方AF；OAM；NEF。
在一些实施例中，所述第二级NWDAF网元用于获取独占NF数据，并根据所述独占NF数据向所述第一级NWDAF网元发送所述第二级分析报告。
在一些实施例中，所述独占NF数据和所述第一级NWDAF网元从共享网元中获取的共享数据中携带有数据关联标识，所述数据关联标识用于标识各数据与所述目标UE的关联关系。
在一些实施例中，所述数据关联标识，包括以下至少一种：
目标UE的IP地址；
IP五元组；
时间戳；
用户唯一永久身份标识SUPI；
数据网络名称DNN；
网络切片唯一标识S-NSSAI；
无线接入网络用户设备NG接口应用协议标识；
AN隧道信息。
在一些实施例中，所述第二级NWDAF网元还用于接收辅助NWDAF网元发送的独占NF数据，所述辅助NWDAF网元用于对获取的独占NF数据进行脱敏处理，并将脱敏处理后的独占NF数据发送至所述第二级NWDAF网元。
在一些实施例中，所述装置还包括：
第一接收模块，配置为接收所述NWDAF用户的第一请求；
第一确定模块，配置为根据所述第一请求，确定用于获取所述第二级分析报告的第二级NWDAF网元。
在一些实施例中，所述第一确定模块，包括：
获取子模块，配置为根据所述第一请求，从UDM获取所述第二级NWDAF网元的网元标识。
在一些实施例中，所述第一请求包括以下至少之一：
所述第一类分析的标识信息；
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
在一些实施例中，所述获取子模块，包括：
第一确定子模块，配置为根据所述第一请求，从所述UDM确定目标UE所属网络切片的独占NF的信息；
第二确定子模块，配置为根据所述独占NF的信息，从注册在NRF网元的第二级NWDAF网元中，确定服务于所述目标UE所属网络切片的第二级NWDAF网元的网元标识。
在一些实施例中，所述装置还包括：
第三发送模块，配置为根据所述第二级NWDAF网元的网元标识，向所述第二级NWDAF网元发送第二请求，其中，所述第二请求用于供所述第二级NWDAF网元上报分析数据。
在一些实施例中，所述第二请求包括以下至少之一：
所述第一类分析的标识信息；
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
在一些实施例中，所述第二级NWDAF网元还用于向辅助NWDAF网元发送第三请求；其中，所述第三请求包括以下至少之一：
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
在一些实施例中，所述第一请求为：所述NWDAF用户向注册在网络仓储功能NRF网元的第一级NWDAF网元发送的第一请求。
在一些实施例中，所述NRF用于接收所述NWDAF用户发送的分析请求，并根据所述分析请求向所述NWDAF用户发送所述分析请求响应；其中，所述分析请求包括所述第一类分析的标识信息；所述分析请求响 应用于供所述NWDAF用户确定向所述第一级NWDAF网元发送所述的第一请求。
在一些实施例中，所述NRF注册的NWDAF网元，至少包括：所述第一级NWDAF网元和所述第二级NWDAF网元。
如图15所示，本公开实施例还提供一种无线网络的数据分析装置1500，应用于第二级NWDAF网元，包括：
第四发送模块1501，配置为根据待执行的第一类分析，向第一级NWDAF网元发送第二级分析报告；其中，所述第二级NWDAF网元与所述第一类分析对应的目标UE所属网络切片具有对应关系；所述第一级NWDAF网元用于根据所述第二级分析报告向NWDAF用户发送第一级分析报告；所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
在一些实施例中，所述第二级NWDAF网元服务独立的网络切片，且用于对所述网络切片独占的至少一个网络功能NF进行分析。
在一些实施例中，所述第二级NWDAF网元，包括以下至少之一：
用于执行所述第一类分析得到所述第二级分析报告的第一类网元；
用于根据辅助NWDAF网元发送的分析报告执行分析得到所述第二级分析报告的第二类网元。
在一些实施例中，所述第一类网元，用于采集所述第一类分析对应的数据，并根据所述第一类分析对应的数据执行所述第一类分析；
所述第二类网元用于，用于采集所述第一类分析对应的数据及辅助NWDAF网元提供的数据，并执行所述第一类分析；
所述辅助NWDAF网元，用于采集第二类分析对应的数据，并根据所述第二类分析对应的数据执行所述第二类分析，得到所述第二级分析报告；其中，所述第二类分析为所述第一类分析的关联分析。
在一些实施例中，所述第二级NWDAF网元用于获取独占NF数据，并根据所述独占NF数据向所述第一级NWDAF网元发送所述第二级分析报告。
在一些实施例中，所述第二级NWDAF网元还用于接收辅助NWDAF网元发送的脱敏处理后的独占NF数据，所述辅助NWDAF网元用于对获取的独占NF数据进行脱敏处理，并将脱敏处理后的独占NF数据发送至所述第二级NWDAF网元。
在一些实施例中，所述装置还包括：
第二接收模块，配置为接收所述第一级NWDAF网元根据所述第二级NWDAF网元的网元标识发送的第二请求，其中，所述第二请求用于供所述第二级NWDAF网元上报分析数据。
在一些实施例中，所述第二请求包括以下至少之一：
所述第一类分析的标识信息；
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
在一些实施例中，所述装置还包括：
第五发送模块，配置为向辅助NWDAF网元发送第三请求；其中，所述第三请求包括以下至少之一：
所述目标UE的标识信息；
与所述第一类分析关联的第二类分析的标识信息。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
图16是本公开实施例提供的一种通信设备的结构框图。该通信设备可以是终端或者上述任一实施例中所涉及的用户设备。例如，通信设备1600可以是移动电话，计算机，数字广播用户设备，消息收发设备，游戏控制 台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图16，通信设备1600可以包括以下至少一个组件：处理组件1602，存储器1604，电源组件1606，多媒体组件1608，音频组件1610，输入/输出(I/O)的接口1612，传感器组件1614，以及通信组件1616。
处理组件1602通常控制通信设备1600的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件1602可以包括至少一个处理器1620来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件1602可以包括至少一个模块，便于处理组件1602和其他组件之间的交互。例如，处理组件1602可以包括多媒体模块，以方便多媒体组件1608和处理组件1602之间的交互。
存储器1604被配置为存储各种类型的数据以支持在通信设备1600的操作。这些数据的示例包括用于在通信设备1600上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器1604可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件1606为通信设备1600的各种组件提供电力。电源组件1606可以包括电源管理系统，至少一个电源，及其他与为通信设备1600生成、管理和分配电力相关联的组件。
多媒体组件1608包括在所述通信设备1600和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括至少一个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的 边界，而且还检测与所述触摸或滑动操作相关的唤醒时间和压力。在一些实施例中，多媒体组件1608包括一个前置摄像头和/或后置摄像头。当通信设备1600处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1610被配置为输出和/或输入音频信号。例如，音频组件1610包括一个麦克风(MIC)，当通信设备1600处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1604或经由通信组件1616发送。在一些实施例中，音频组件1610还包括一个扬声器，用于输出音频信号。
I/O接口1612为处理组件1602和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1614包括至少一个传感器，用于为通信设备1600提供各个方面的状态评估。例如，传感器组件1614可以检测到设备1600的打开/关闭状态，组件的相对定位，例如所述组件为通信设备1600的显示器和小键盘，传感器组件1614还可以检测通信设备1600或通信设备1600一个组件的位置改变，用户与通信设备1600接触的存在或不存在，通信设备1600方位或加速/减速和通信设备1600的温度变化。传感器组件1614可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1614还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件1614还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件1616被配置为便于通信设备1600和其他设备之间有线或无线方式的通信。通信设备1600可以接入基于通信标准的无线网络，如WiFi， 2G或3G，或它们的组合。在一个示例性实施例中，通信组件1616经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件1616还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，通信设备1600可以被至少一个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器1604，上述指令可由通信设备1600的处理器1620执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
如图17所示，本公开一实施例示出另一种通信设备的结构。该通信设备可为基站，或者本公开实施例所涉及的任一网络设备。例如，通信设备1700可以被提供为一网络设备。参照图17，通信设备1700包括处理组件1722，其进一步包括至少一个处理器，以及由存储器1732所代表的存储器资源，用于存储可由处理组件1722的执行的指令，例如应用程序。存储器1732中存储的应用程序可以包括一个或一个以上的每一个对应于一组指令的模块。此外，处理组件1722被配置为执行指令，以执行上述方法前述应用在所述通信设备的任意方法。
通信设备1700还可以包括一个电源组件1726被配置为执行通信设备1700的电源管理，一个有线或无线网络接口1750被配置为将通信设备1700 连接到网络，和一个输入输出(I/O)接口1758。通信设备1700可以操作基于存储在存储器1732的操作系统，例如Windows Server TM，Mac OS XTM，UnixTM,LinuxTM，FreeBSDTM或类似。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (33)

  1. 一种无线网络的数据分析方法，其中，所述方法应用于第一级网络数据分析功能NWDAF网元，包括：
    根据待执行的第一类分析，获取与目标用户设备UE所属网络切片具有对应关系的第二级NWDAF网元发送的第二级分析报告；
    根据所述第二级分析报告，向NWDAF用户发送第一级分析报告，其中，所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
  2. 根据权利要求1所述的方法，其中，所述第二级NWDAF网元服务独立的网络切片，且用于对所述网络切片独占的至少一个网络功能NF进行分析。
  3. 根据权利要求1所述的方法，其中，所述第二级NWDAF网元，包括以下至少之一：
    用于执行所述第一类分析得到所述第二级分析报告的第一类网元；
    用于根据辅助NWDAF网元发送的分析报告执行分析得到所述第二级分析报告的第二类网元。
  4. 根据权利要求3所述的方法，其中，所述第一类网元，用于采集所述第一类分析对应的数据，并根据所述第一类分析对应的数据执行所述第一类分析；
    所述第二类网元，用于采集所述第一类分析对应的数据及辅助NWDAF网元提供的数据，并执行所述第一类分析；
    所述辅助NWDAF网元，用于采集第二类分析对应的数据，并根据所述第二类分析对应的数据执行所述第二类分析，得到所述第二级分析报告；其中，所述第二类分析为所述第一类分析的关联分析。
  5. 根据权利要求1所述的方法，其中，所述方法还包括：
    基于所述第一类分析，从共享网元获取待分析的共享数据；
    所述根据所述第二级分析报告，向NWDAF用户发送第一级分析报告，包括：
    根据所述共享数据和所述第二级分析报告，向所述NWDAF用户发送所述第一级分析报告。
  6. 根据权利要求5所述的方法，其中，所述共享网元包括以下至少之一：
    共享网络功能NF；内部应用层功能AF；第三方AF；操作维护管理OAM；网络开放功能NEF。
  7. 根据权利要求1所述的方法，其中，所述第二级NWDAF网元用于获取独占NF数据，并根据所述独占NF数据向所述第一级NWDAF网元发送所述第二级分析报告。
  8. 根据权利要求7所述的方法，其中，所述独占NF数据和所述第一级NWDAF网元从共享网元中获取的共享数据中携带有数据关联标识，所述数据关联标识用于标识各数据与目标UE的关联关系。
  9. 根据权利要求8所述的方法，其中，所述数据关联标识，包括以下至少一种：
    所述目标UE的IP地址；
    IP五元组；
    时间戳；
    用户唯一永久身份标识SUPI；
    数据网络名称DNN；
    网络切片唯一标识S-NSSAI；
    无线接入网络用户设备NG接口应用协议标识；
    接入网AN隧道信息。
  10. 根据权利要求1至9任一所述的方法，其中，所述第二级NWDAF网元还用于接收辅助NWDAF网元发送的脱敏处理后的独占NF数据，所述辅助NWDAF网元用于对获取的独占NF数据进行脱敏处理，并将脱敏处理后的独占NF数据发送至所述第二级NWDAF网元。
  11. 根据权利要求1所述的方法，其中，所述方法还包括：
    接收所述NWDAF用户的第一请求；
    根据所述第一请求，确定用于获取所述第二级分析报告的第二级NWDAF网元。
  12. 根据权利要求11所述的方法，其中，所述根据所述第一请求，确定用于获取所述第二级分析报告的第二级NWDAF网元，包括：
    根据所述第一请求，从统一数据管理功能网元UDM获取所述第二级NWDAF网元的网元标识。
  13. 根据权利要求11所述的方法，其中，所述第一请求包括以下至少之一：
    所述第一类分析的标识信息；
    所述目标UE的标识信息；
    与所述第一类分析关联的第二类分析的标识信息。
  14. 根据权利要求12所述的方法，其中，所述根据所述第一请求，从UDM获取所述第二级NWDAF网元的网元标识，包括：
    根据所述第一请求，从所述UDM确定目标UE所属网络切片的独占NF的信息；
    根据所述独占NF的信息，从注册在网络仓储功能NRF网元的第二级NWDAF网元中，确定服务于所述目标UE所属网络切片的第二级NWDAF网元的网元标识。
  15. 根据权利要求12所述的方法，其中，所述方法还包括：
    根据所述第二级NWDAF网元的网元标识，向所述第二级NWDAF网元发送第二请求，其中，所述第二请求用于供所述第二级NWDAF网元上报分析数据。
  16. 根据权利要求15所述的方法，其中，所述第二请求包括以下至少之一：
    所述第一类分析的标识信息；
    所述目标UE的标识信息；
    与所述第一类分析关联的第二类分析的标识信息。
  17. 根据权利要求12所述的方法，其中，所述第二级NWDAF网元还用于向辅助NWDAF网元发送第三请求；其中，所述第三请求包括以下至少之一：
    所述目标UE的标识信息；
    与所述第一类分析关联的第二类分析的标识信息。
  18. 根据权利要求11至17任一所述的方法，其中，所述第一请求为：所述NWDAF用户向注册在网络仓储功能NRF网元的第一级NWDAF网元发送的第一请求。
  19. 根据权利要求18所述的方法，其中，所述NRF用于接收所述NWDAF用户发送的分析请求，并根据所述分析请求向所述NWDAF用户发送分析请求响应；其中，所述分析请求包括所述第一类分析的标识信息；所述分析请求响应用于供所述NWDAF用户确定向所述第一级NWDAF网元发送所述的第一请求。
  20. 根据权利要求18所述的方法，其中，所述NRF注册的NWDAF网元，至少包括：所述第一级NWDAF网元和所述第二级NWDAF网元。
  21. 一种无线网络的数据分析方法，其中，所述方法应用于第二级 NWDAF网元，包括：
    根据待执行的第一类分析，向第一级NWDAF网元发送第二级分析报告；其中，所述第二级NWDAF网元与所述第一类分析对应的目标UE所属网络切片具有对应关系；所述第一级NWDAF网元用于根据所述第二级分析报告向NWDAF用户发送第一级分析报告；所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
  22. 根据权利要求21所述的方法，其中，所述第二级NWDAF网元服务独立的网络切片，且用于对所述网络切片独占的至少一个网络功能NF进行分析。
  23. 根据权利要求21所述的方法，其中，所述第二级NWDAF网元，包括以下至少之一：
    用于执行所述第一类分析得到所述第二级分析报告的第一类网元；
    用于根据辅助NWDAF网元发送的分析报告执行分析得到所述第二级分析报告的第二类网元。
  24. 根据权利要求23所述的方法，其中，所述第一类网元，用于采集所述第一类分析对应的数据，并根据所述第一类分析对应的数据执行所述第一类分析；
    所述第二类网元用于，用于采集所述第一类分析对应的数据，并根据所述第二级分析报告和所述第一类分析对应的数据执行所述第一类分析；
    所述辅助NWDAF网元，用于采集第二类分析对应的数据，并根据所述第二类分析对应的数据执行所述第二类分析，得到所述第二级分析报告；其中，所述第二类分析为所述第一类分析的关联分析。
  25. 根据权利要求21所述的方法，其中，所述第二级NWDAF网元用于获取独占NF数据，并根据所述独占NF数据向所述第一级NWDAF 网元发送所述第二级分析报告。
  26. 根据权利要求21至25任一所述的方法，其中，所述第二级NWDAF网元还用于接收辅助NWDAF网元发送的脱敏处理后的独占NF数据，所述辅助NWDAF网元用于对获取的独占NF数据进行脱敏处理，并将脱敏处理后的独占NF数据发送至所述第二级NWDAF网元。
  27. 根据权利要求21所述的方法，其中，所述方法还包括：
    接收所述第一级NWDAF网元根据所述第二级NWDAF网元的网元标识发送的第二请求，其中，所述第二请求用于供所述第二级NWDAF网元上报分析数据。
  28. 根据权利要求27所述的方法，其中，所述第二请求包括以下至少之一：
    所述第一类分析的标识信息；
    所述目标UE的标识信息；
    与所述第一类分析关联的第二类分析的标识信息。
  29. 根据权利要求21所述的方法，其中，所述方法还包括：
    向辅助NWDAF网元发送第三请求；其中，所述第三请求包括以下至少之一：
    所述目标UE的标识信息；
    与所述第一类分析关联的第二类分析的标识信息。
  30. 一种无线网络的数据分析装置，其中，所述装置应用于第一级NWDAF网元，包括：
    第一获取模块，配置为根据待执行的第一类分析，获取与目标用户设备UE所属网络切片具有对应关系的第二级NWDAF网元发送的第二级分析报告；
    第一发送模块，配置为根据所述第二级分析报告，向NWDAF用户 发送第一级分析报告，其中，所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
  31. 一种无线网络的数据分析装置，其中，所述装置应用于第二级NWDAF网元，包括：
    第四发送模块，配置为根据待执行的第一类分析，向第一级NWDAF网元发送第二级分析报告；其中，所述第二级NWDAF网元与所述第一类分析对应的目标UE所属网络切片具有对应关系；所述第一级NWDAF网元用于根据所述第二级分析报告向NWDAF用户发送第一级分析报告；所述NWDAF用户用于根据所述第一级分析报告调整所述第一类分析的网络参数。
  32. 一种通信设备，其中，所述通信设备至少包括：处理器和用于存储能够在所述处理器上运行的可执行指令的存储器，其中：
    处理器用于运行所述可执行指令时，所述可执行指令执行上述权利要求1至20或21至29任一项提供的无线网络的数据分析方法中的步骤。
  33. 一种非临时性计算机可读存储介质，其中，所述计算机可读存储介质中存储有计算机可执行指令，该计算机可执行指令被处理器执行时实现上述权利要求1至20或21至29任一项提供的无线网络的数据分析方法中的步骤。
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