CN114302429B - NWDAF network element determination method, device, equipment and storage medium - Google Patents

NWDAF network element determination method, device, equipment and storage medium Download PDF

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CN114302429B
CN114302429B CN202111610410.4A CN202111610410A CN114302429B CN 114302429 B CN114302429 B CN 114302429B CN 202111610410 A CN202111610410 A CN 202111610410A CN 114302429 B CN114302429 B CN 114302429B
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nwdaf
network element
analysis
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nwdaf network
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CN114302429A (en
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任驰
马泽芳
王光全
马瑞涛
邢天齐
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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Abstract

The application provides a method, a device, equipment and a storage medium for determining a network data analysis function NWDAF network element, which relate to the field of communication and can accurately determine the NWDAF network element. The method comprises the following steps: receiving a first indication message from an NWDAF service consumption network element, wherein the first indication message comprises an analysis identification ID and analysis expected time, the analysis ID is used for identifying the type of network data to be analyzed, and the analysis expected time is the longest analysis time corresponding to the network data to be analyzed; and under the condition that the analysis expected time is greater than or equal to the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to the network database function network element NRF network element, the first request message is used for requesting one or more lower NWDAF network elements, and the sum of the maximum value in the time for the one or more lower NWDAF network elements to analyze network data and the time for the first aggregation NWDAF to aggregate the one or more lower NWDAF network elements is less than or equal to the time for the first aggregation NWDAF network element to analyze network data.

Description

NWDAF network element determination method, device, equipment and storage medium
Technical Field
The present invention relates to the field of communications, and in particular, to a method, an apparatus, a device, and a storage medium for determining an NWDAF network element.
Background
With the development of communication technology, the third generation partnership project (3rd generation partnership project,3GPP) introduced network data analysis functions (network data analytics function, NWDAF) network elements. The NWDAF network element may collect and analyze network data from various Network Functions (NF), application functions (application function, AF), and operations administration and maintenance (operation administration and maintenance, OAM) systems.
Typically, the NWDAF service consumer network element determines the NWDAF network element for analyzing the network data according to whether the NWDAF network element supports analyzing the network data. However, the network data analysis capabilities may be different due to different NWDAF network elements. For example, some NWDAF network elements may perform network data analysis through a lower NWDAF network element, and some NWDAF network elements may perform analysis of the network data network separately. Therefore, the NWDAF network element cannot be accurately determined only according to whether the NWDAF network element can analyze the network data.
Disclosure of Invention
The application provides a method, a device, equipment and a storage medium for determining an NWDAF network element so as to accurately determine the NWDAF.
In order to achieve the above purpose, the present application adopts the following technical scheme:
in a first aspect, the present application provides a method for determining a network data analysis function NWDAF network element, which is characterized in that the method is applied to a first aggregate NWDAF network element, where the first aggregate NWDAF network element has a network data analysis capability and a capability of aggregating a lower NWDAF network element, and the method includes: receiving a first indication message from an NWDAF service consumption network element, wherein the first indication message comprises an analysis identification ID and analysis expected time, the analysis ID is used for identifying the type of network data to be analyzed, and the analysis expected time is the longest analysis time corresponding to the network data to be analyzed; and under the condition that the analysis expected time of the network data to be analyzed is greater than or equal to the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to the network database function network element NRF network element, the first request message is used for requesting one or more lower NWDAF network elements to analyze the network data, and the sum of the maximum value in the time of the one or more lower NWDAF network elements to analyze the network data and the time of the first aggregation NWDAF to aggregate the one or more lower NWDAF network elements is less than or equal to the time of the first aggregation NWDAF network element to analyze the network data.
Optionally, sending a first rejection message to the NWDAF serving consumer network element if the analysis expected time is less than the analysis time delay supported by the first aggregate NWDAF network element; the first reject message includes a cause value indicating that an analysis delay supported by the first aggregate NWDAF network element is greater than an analysis expected time.
Optionally, the first aggregate NWDAF network element receives first feedback information from the NRF network element, where the first feedback information includes information of one or more lower NWDAF network elements, the lower NWDAF network elements have a capability of analyzing network data, and a coverage area of the lower NWDAF network elements includes an area to be analyzed.
Optionally, sending a second indication message to one or more subordinate NWDAF network elements, where the second indication message is used to indicate to analyze network data corresponding to the analysis ID, and the second indication message includes the analysis ID; and receiving analysis information from one or more lower NWDAF network elements, wherein the analysis information of the lower NWDAF network elements comprises analysis results of the lower NWDAF network elements on network data.
In a second aspect, the present application provides a method for determining a network data analysis function NWDAF network element, which is applied to an NRF network element, and is characterized in that the method includes: receiving a first request message from a first aggregate NWDAF network element, wherein the first request message is used for requesting a lower NWDAF network element, and the lower NWDAF network element is used for analyzing network data; the first aggregate NWDAF network element has network data analysis capability and capability of aggregating lower-level NWDAF network elements, and analysis time delay supported by the first aggregate NWDAF network element is less than or equal to analysis expected time of network data; and sending first feedback information to the first aggregate NWDAF network element, wherein the first feedback information comprises information of one or more subordinate NWDAF network elements.
Optionally, receiving a second request message of the NWDAF service consumption network element, where the second request message requests to aggregate the NWDAF network element; and sending a second feedback message to the NWDAF service consumption network element, wherein the second feedback message comprises an aggregate NWDAF network element list, and the aggregate NWDAF network element list comprises a plurality of aggregate NWDAF network elements.
Optionally, the second request message includes an analysis ID and an area to be analyzed, the analysis ID being used to characterize a type of network data to be analyzed, the method further comprising: determining one or more subordinate NWDAF network elements according to the area to be analyzed; the coverage area of the subordinate NWDAF network element comprises the area to be analyzed.
In a third aspect, the present application provides a device for determining an NWDAF network element, where the device is applied to a first aggregate NWDAF network element, where the first aggregate NWDAF network element has a network data analysis capability and a capability of aggregating a lower NWDAF network element, and the NWDAF network element determining device includes: a receiving unit, a transmitting unit; the device comprises a receiving unit, a first aggregation NWDAF network element and a second aggregation NWDAF network element, wherein the receiving unit is used for receiving a first indication message from the NWDAF service consumption network element, the first indication message comprises an analysis identification ID and analysis expected time, the analysis ID is used for representing the type of network data to be analyzed, the analysis expected time is the analysis expected time of the network data, and the first indication message is used for indicating the first aggregation NWDAF network element to analyze the network data corresponding to the analysis ID; and under the condition that the analysis expected time is greater than or equal to the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to the network database function network element NRF network element, wherein the first request message is used for requesting one or more lower NWDAF network elements to analyze network data, and the one or more lower NWDAF network elements are used for analyzing the network data.
Optionally, the sending unit is further configured to send a first rejection message to the NWDAF serving consumer network element when the analysis expected time is less than the analysis delay supported by the first aggregate NWDAF network element; the first reject message includes a cause value indicating that an analysis delay supported by the first aggregate NWDAF network element is greater than an analysis expected time. Optionally, the receiving unit is further configured to receive first feedback information from the NRF network element, where the first feedback information includes information of one or more lower NWDAF network elements, the lower NWDAF network elements have a capability of analyzing network data, and a coverage area of the lower NWDAF network elements includes an area to be analyzed.
Optionally, the sending unit is further configured to send a second indication message to one or more subordinate NWDAF network elements, where the second indication message is used to indicate to analyze network data corresponding to the analysis ID, and the second indication message includes the analysis ID; the receiving unit is further configured to receive analysis information from one or more lower NWDAF network elements, where the analysis information of the lower NWDAF network element includes a result of analysis of network data by the lower NWDAF network element.
In a fourth aspect, the present application provides a determining device of a network data analysis function NWDAF network element, applied to an NRF network element, which is characterized by including: a receiving unit, a transmitting unit; a receiving unit, configured to receive a first request message from a first NWDAF network element, where the first request message is used to request a lower NWDAF network element, and the lower NWDAF network element is used to analyze network data; the first aggregate NWDAF network element has network data analysis capability and capability of aggregating lower-level NWDAF network elements, and analysis time delay supported by the first aggregate NWDAF network element is less than or equal to analysis expected time of network data; and the sending unit is used for sending first feedback information to the first aggregate NWDAF network element, wherein the first feedback information comprises information of one or more subordinate NWDAF network elements.
Optionally, the receiving unit is further configured to receive a second request message of the NWDAF service consumption network element, where the second request message requests to aggregate the NWDAF network element; the sending unit is further configured to send a second feedback message to the NWDAF service consumption network element, where the second feedback message includes an aggregate NWDAF network element list, and the aggregate NWDAF network element list includes a plurality of aggregate NWDAF network elements.
Optionally, the second request message includes an analysis ID and an area to be analyzed, the analysis ID is used to characterize a type of network data to be analyzed, and the NWDAF network element determining device further includes: a determination unit; a determining unit, configured to determine one or more subordinate NWDAF network elements according to the area to be analyzed; the coverage area of the subordinate NWDAF network element comprises the area to be analyzed.
In a fifth aspect, the present application provides a communication device comprising: a processor, a communication interface, and a memory. Wherein the memory is used to store one or more programs. The one or more programs include computer-executable instructions that, when the communication device is running, cause the processor to execute the computer-executable instructions stored in the memory to cause the communication device to perform the method of determining an NWDAF network element of the first aspect and any of its various alternative implementations.
In a sixth aspect, the present application provides a computer readable storage medium having instructions stored therein, which when executed by a computer, perform the NWDAF network element determining method of the first aspect and any of its various alternative implementations.
According to the NWDAF network element determining method, a first indication message from an NWDAF service consumption network element is received, the first indication message comprises an analysis identification ID and analysis expected time, the analysis ID is used for identifying the type of network data to be analyzed, the analysis expected time is the longest analysis time corresponding to the network data to be analyzed, and the first indication message is used for indicating the first aggregate NWDAF network element to analyze the network data corresponding to the analysis ID; and under the condition that the analysis expected time is larger than the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to the NRF network element, wherein the first request message is used for acquiring one or more lower NWDAF network elements, and the lower NWDAF network element is used for analyzing network data. Therefore, the method and the device have the advantages that the aggregate NWDAF network element can send the indication message to the NRF network element only when the analysis expected time is larger than the analysis time delay supported by the aggregate NWDAF network element, so that the aggregate NWDAF network element is prevented from exceeding the analysis expected time of the NWDAF service consumption network element; therefore, the NRF network element can accurately select a proper lower NWDAF network element for the aggregate NWDAF under the condition that the analysis time delay supported by the aggregate NWDAF meets the analysis expected time delay.
Drawings
Fig. 1 is a schematic structural diagram of an NWDAF network element determining system provided in an embodiment of the present application;
fig. 2 is a flow chart of a method for determining NWDAF network elements provided in an embodiment of the present application;
fig. 3 is a flow chart of a method for determining NWDAF network elements provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of an NWDAF network element determining system provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of an NWDAF network element determining device provided in an embodiment of the present application;
fig. 6 is a flow chart of a method for determining NWDAF network elements provided in an embodiment of the present application;
fig. 7 is a flowchart of another NWDAF network element determining method provided in an embodiment of the present application;
fig. 8 is a flowchart of another NWDAF network element determining method provided in an embodiment of the present application;
fig. 9 is a flowchart of another NWDAF network element determining method provided in the embodiment of the present application;
fig. 10 is a schematic structural diagram of an NWDAF network element determining device provided in an embodiment of the present application;
fig. 11 is a schematic structural diagram of an NWDAF network element determining device provided in an embodiment of the present application.
Detailed Description
The following describes in detail a method, an apparatus, a device, and a storage medium for determining an NWDAF network element provided in an embodiment of the present application with reference to the accompanying drawings.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.
The terms "first" and "second" and the like in the description and in the drawings are used for distinguishing between different objects or for distinguishing between different processes of the same object and not for describing a particular sequential order of objects.
Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus.
It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
In the description of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more.
Within the framework of the 5G core network (5G core,5 gc), 3GPP defines a 5G native large network data analysis and AI technology application framework based on NWDAF network element architecture. The NWDAF network element architecture can support mechanisms such as corresponding network data acquisition, network data analysis and analysis result feedback through a standardized communication network flow, and further improves the automatic management, operation and optimization capacity of the 5G network.
In one example, as shown in fig. 1, the network data analysis architecture of the NWDAF network element may include: NF, AF, NWDAF network element, network data repository, OAM.
The NF has access and mobility management functions, session management functions, and the like, and can also provide network data for the MWDAF. The AF indication application function may be used to provide network data for NWDAF network elements. The network data store is used to store network data. OAM is used to operate, manage, and maintain networks and services.
It should be noted that, the NWDAF network element may also obtain NF registration information from the NRF network element, and also support obtaining information such as network resource usage situation or NF load from the OAM.
The NF service consumption network element and the NWDAF network element may also have a "quasi-real-time" interaction mechanism, i.e. the NWDAF network element evaluates and calculates for a specific analysis type in the NWDAF network element, obtains a "supported analysis delay" for the analysis type, and registers the NWDAF network element as a part of NWDAF network element information (NF Profile) in the NRF network element.
When the NF service consumer network element performs NWDAF network element discovery, a request message for requesting the NWDAF network element may be sent to the NRF network element according to the type of network data to be analyzed, and indicate that the NRF network element needs to obtain a corresponding analysis result within a certain time delay.
The NRF network element may return a list to the NF service consumer network element, which may include the identities of the plurality of NWDAF network elements and the corresponding analysis delays. The analysis delay of the NWDAF network element refers to the delay of the NWDAF itself for analyzing network data. The NF service consumption network element can compare the analysis time delay of each NWDAF network element in the list with the analysis expected time of the NF service consumption network element, and select one NWDAF network element with the analysis time delay smaller than the analysis expected time from the list to perform subsequent operations such as indication, analysis subscription and the like.
In one example, as shown in fig. 2, the NRF network element may determine the NWDAF network element through the following procedure.
S1, the NF service consumption network element sends a request message to the NRF network element. Correspondingly, the NRF network element receives the request message sent by the NF service consumption network element.
Wherein the request message may be used to request the NWDAF network element. For example, the Request message may be an NRF network element NFDiscovery Request. The request message may include: analyze ID, analyze area, and real-time communication indication. The analysis ID may be used to identify the type of network data to be analyzed. The real-time communication indication is used for indicating the NWDAF network element to feed back analysis information in analysis expected time.
In one example, the types of network data may include: load information (load level information), traffic experience information (Service Experience), NF load information (NF load information), network Performance information (Network Performance), terminal Mobility information (UE Mobility), terminal Communication information (UE Communication), terminal anomaly behavior information (Abnormal behaviour), user network data congestion information (User Data Congestion), quality of service sustainability information (QoS Sustainability), conference management congestion control information (Session Management Congestion Control Experience), redundant transport information (Redundant Transmission Experience), wireless local area network Performance information (WLAN Performance), terminal distribution information (UE distribution), and edge network Performance information (DN Performance).
S2, the NRF network element authorizes the NF service consumption network element to discover the service.
S3, the NRF network element sends a request feedback message to the NF service consumption network element. Correspondingly, the NF service consumption network element receives a feedback message sent by the NRF network element
Wherein the request feedback message includes the NWDAF network element list. The NWDAF network element list comprises an identification of one or more NWDAF network elements. The plurality of NWDAF network elements each support the requested network data analysis and a specific analysis delay.
The Request feedback message may be specifically, for example, NRF network element NFDiscovery Request Response.
It should be noted that, the NWDAF-based 5GC network data analysis architecture supports analysis aggregation capability, that is, the indication from the NWDAF service consumption network element may be completed by multiple lower NWDAF network elements (for example, the area involved in the analysis is too large and multiple NWDAF network elements are needed to be completely covered), the NWDAF service consumer discovers an NWDAF network element with analysis aggregation capability (i.e., an aggregated NWDAF network element) through the NRF network element, sends a specific analysis requirement to the aggregated NWDAF network element, and the aggregated NWDAF network element discovers other lower NWDAF network elements providing analysis network data information again, and finally, the aggregated NWDAF network element may analyze the analysis information of the network data fed back by the aggregated lower nwf network element, and complete the aggregation of the analysis result through an internal mechanism and then feeds back to the NWDAF service consumption network element.
In the case that the NWDAF service consumption network element provides the area to be analyzed, a specific flow of analyzing the network data analysis information fed back by the NWDAF network element at the lower stage of the aggregation by the NWDAF network element may be as shown in fig. 3:
s11, the NWDAF service consumption network element sends a request aggregation NWDAF network element message to the NRF network element. Correspondingly, the NRF network element receives a request aggregation NWDAF network element message sent by the NWDAF service consumption network element.
Wherein, the request aggregation NWDAF network element message may further include: analyzing ID and area to be analyzed. For example, the message may be an NRF network element NFDiscovery Request.
Wherein the aggregate NWDAF network element is an NWDAF network element with aggregate capability. The aggregation capability of the NWDAF network element is a capability additionally supported on the basis of the basic functions of the NWDAF network element.
And S12, the NRF network element discovers an aggregate NWDAF network element according to the request aggregate NWDAF network element message.
The NRF network element may determine a plurality of aggregated NWDAF network elements according to the pre-configured NWDAF information.
S13, the NR network element F feeds back the aggregated NWDAF network element information to the NWDAF service consumption network element. Correspondingly, the NWDAF service consumption network element receives the aggregated NWDAF network element information from the NRF network element.
Wherein the NWDAF network element information comprises identities of a plurality of aggregated NWDAF network elements. For example, the message may be NRF network element_nfdiscovery_response.
Further, the NWDAF service consumption network element may determine a target aggregated NWDAF network element based on a preset criterion. The preset criteria may be preconfigured and may be used to determine the aggregate NWDAF network element. For example, the predetermined criterion may be that the analysis time of the network data is less than or equal to the analysis expected time delay.
And S14, the NWDAF service consumption network element sends a first indication message to the aggregation NWDAF network element. Correspondingly, the aggregate NWDAF network element receives a first indication message of the NWDAF service consumption network element.
The first indication message is used for indicating the aggregate NWDAF network element to analyze the network data corresponding to the analysis ID. For example, the first indication message includes: analyzing ID and area to be analyzed. The first indication message may be an analytics info/analytics subscriber_subscriber Request.
And S15, the aggregate NWDAF network element transmits a second indication message to one or more subordinate NWDAF network elements. Correspondingly, one or more subordinate NWDAF network elements receive the second indication message sent by the aggregate NWDAF network element.
The second indication message is used for indicating the subordinate NWDAF network element to analyze the network data corresponding to the analysis ID. For example, the second indication message may be
_Analyticslinfo/_AnalyticsSubscription_Subscri Request。
Wherein one or more subordinate NWDAF network elements may be selected by the aggregate NWDAF network element based on the area to be analyzed.
In another example, when the request aggregate NWDAF network element message does not include the area to be analyzed, the aggregate NWDAF network element selects a lower NWDAF network element that covers a large area as much as possible when selecting the lower NWDAF network element.
S16, each subordinate NWDAF network element transmits network data analysis information to the aggregation NWDAF network element. Correspondingly, the aggregate NWDAF network element receives network data analysis information sent by a plurality of lower NWDAF network elements.
For example, the network data analysis information may be _ Analyticslinfo Response or _analysis description_notify. The network data analysis information may refer to an analysis result of the network data by the lower NWDAF.
S17, aggregating analysis information of a plurality of subordinate NWDAF network elements by the NWDAF network elements.
And S18, the aggregated NWDAF network element feeds the aggregated analysis information back to the NWDAF service consumption network element. Correspondingly, the NWDAF service consumption network element receives the aggregated analysis information sent by the aggregated NWDAF network element.
It should be noted that, an NWDAF network element with a specific aggregation capability may or may not apply the aggregation capability when performing network data analysis. When the NWDAF service consumption network element selects an aggregate NWDAF network element for analysis ID, it only considers analysis delay when the aggregate NWDAF network element independently completes network data analysis. When the polymeric NWDAF applies the polymeric capability, its analysis delay becomes: the maximum value of the analysis time delay of the plurality of lower NWDAF network elements for the specific analysis ID, and the sum of the time required for the aggregation of the network data analysis information of the lower NWDAF network elements by the aggregation NWDAF network elements. When the time for aggregating the network data analysis information of the NWDAF network elements at the lower level is longer than the expected analysis delay of the NWDAF service consumption network elements, the NWDAF network elements cannot meet the delay requirement of the NWDAF service consumption network elements.
In view of this, an embodiment of the present application provides a method for determining an NWDAF network element, where the method may include: receiving a first indication message from an NWDAF service consumption network element, wherein the first indication message comprises an analysis Identification (ID) and analysis expected time, the analysis ID is used for representing the type of network data to be analyzed, the analysis expected time is the analysis expected time of the network data, and the first indication message is used for indicating the first aggregate NWDAF network element to analyze the network data corresponding to the analysis ID; and under the condition that the analysis expected time is greater than or equal to the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to the NRF network element, wherein the first request message is used for requesting one or more subordinate NWDAF network elements to analyze network data.
The method provided in the embodiments of the present application will be described below with reference to the accompanying drawings.
The communication method provided by the embodiment of the present application may be applied to the communication system shown in fig. 4, and as shown in fig. 4, the communication system 10 may include an aggregate NWDAF network element 11, a subordinate NWDAF network element 12, a network repository function network element (network repository function, NRF network element) 13, an NWDAF service consumption network element 14, and a network data source 15. One or more aggregation NWDAF network elements 11, a plurality of subordinate NWDAF network elements 12, a network repository function network element (network repository function, NRF network element) 13, NWDAF service consumption network element 14 and network data source 15 can be in communication connection
Wherein the aggregate NWDAF network element 11 has analysis capability and aggregation capability. The analysis capability is the capability of analyzing network data, and the aggregation capability is the capability of aggregating network data analysis information of a plurality of subordinate NWDAF network elements. When the aggregate NWDAF network element receives the indication message of the NWDAF service consumption network element, the network data analysis process can be completed through a plurality of lower NWDAF network elements.
The lower NWDAF network element 12 is configured to analyze the network data, and feed back a result of analyzing the network data to the NWDAF network element.
The network repository function network element NRF network element 13 is configured to maintain real-time information of all network function services in the network. In future communication systems, the network repository function element may still be an NRF element, or may have other names, which is not limited in this application.
Wherein the NWDAF service consuming network element 14 is configured to analyze the service by requesting network data from the NRF network element.
Wherein the network data source network element 15 is used to provide network data to be analyzed.
It should be noted that fig. 4 is only an exemplary architecture, and the communication system may further include other functional units besides the functional units shown in fig. 4, which is not limited in this embodiment of the present application.
In particular implementations, each device in fig. 1 may employ the constituent structure shown in fig. 5, or include the components shown in fig. 5. Fig. 5 is a schematic diagram of a communication device 20 according to an embodiment of the present application, where the communication device 20 includes a processor 201, a communication interface 202, a communication line 203, and a memory 204.
The processor 201 may be a CPU, general purpose processor network processor (network processor, NP), digital signal processor (digital signal processing, DSP), microprocessor, microcontroller, programmable logic device (programmable logic device, PLD), or any combination thereof, among others. The processor 201 may also be other devices with processing functions, such as, without limitation, circuits, devices, or software modules. In one example, processor 201 may include one or more CPUs, such as CPU0 and CPU1 in fig. 2.
Communication interface 202 is used to communicate with other devices or other communication networks. The other communication network may be an ethernet, a radio access network (radio access network, RAN device), a wireless local area network (wireless local area networks, WLAN), etc. The communication interface may be a module, a circuit, a communication interface, or any device capable of enabling communication.
A communication line 203 for communicating messages between the components comprised by the determination system of the NWDAF network element.
Memory 204 for storing instructions. Wherein the instructions may be computer programs.
The memory 204 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device capable of storing static messages and/or instructions, a random access memory (RAN device dom access memory, RAM) or other type of dynamic storage device capable of storing messages and/or instructions, an electrical erasable programmable read-only memory (EEPROM), a compact disc (compact disc read-only memory) or other optical disc storage, an optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disc storage medium or other magnetic storage device, etc.
It should be noted that the memory 204 may exist separately from the processor 201 or may be integrated with the processor 201. Memory 204 may be used to store instructions or program code or some network data, etc. Memory 302 may be located within network device 20 or external to network device 20, without limitation. Processor 201 is configured to execute instructions stored in memory 204 to implement a method for determining NWDAF network elements provided in the following embodiments of the present application.
As an alternative implementation, the network device 20 includes multiple processors, e.g., processor 207 in addition to processor 201 in fig. 5.
As an alternative implementation, the network device 20 further includes an output device 205 and an input device 206. Illustratively, the input device 206 is a keyboard, mouse, microphone, or joystick device, and the output device 205 is a display screen, speaker (spaker), or the like.
In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.
Further, actions, terms, etc. referred to between embodiments of the present application may be referred to each other without limitation. In the embodiment of the present application, the name of the message or the name of the parameter in the message, etc. interacted between the devices are only an example, and other names may also be adopted in the specific implementation, and are not limited.
The embodiment of the application provides a method for determining a network data analysis function NWDAF network element, which can be applied to the above-mentioned aggregate NWDAF network element and also can be applied to a determining device included in the aggregate NWDAF network element.
The embodiment of the application is described taking the NWDAF network element determination method adapted to the above-mentioned aggregate NWDAF network element as an example. As shown in fig. 6, the method may include S301-S304:
S301, the NWDAF service consumption network element sends a first indication message to the first aggregate NWDAF network element. Correspondingly, the first aggregate NWDAF network element receives a first indication message from the NWDAF service consumption network element.
The NWDAF network element service consumption network element may be the NWDAF service consumption network element 14 in fig. 4, or may be a device, such as a chip, in the NWDAF service consumption network element 14. The first aggregate NWDAF network element may be the aggregate NWDAF network element 11 in fig. 4, or may also be a device, such as a chip, in the aggregate NWDAF network element 11.
The first aggregate NWDAF network element has a network data analysis capability and a capability of aggregate lower NWDAF network elements. The network data analysis capability of the first aggregate NWDAF network element means that the first aggregate NWDAF network element is capable of analyzing network data. The capability of the first aggregated NWDAF network element to aggregate the lower NWDAF network elements refers to that the first aggregated NWDAF network element is capable of aggregating analysis information of one or more lower NWDAFs.
Wherein the first indication message may be used to indicate an analysis of the network data. For example, the first indication message may include an analysis ID, analysis expected time. The analysis ID may refer to the above description and will not be repeated. The analysis expected time (also referred to as the time at which the analysis information is required, the near real-time communication indication) refers to the maximum analysis time corresponding to the network data to be analyzed.
Wherein the first aggregate NWDAF network element may be confirmed by the following procedure: the NWDAF service consumption network element sends an aggregate NWDAF network element request message to the NRF network element, and correspondingly, the NRF network element receives the aggregate NWDAF network element request message and then sends an aggregate NWDAF network element list to the NWDAF service consumption network element. After the NWDAF service consumer network element receives the aggregate NWDAF network element list, the first aggregate NWDAF network element may be determined from the aggregate NWDAF network element list based on a preset rule.
The preset rule may be preconfigured by the first aggregate NWDAF network element, or may be set in response to a setting operation of a developer, without limitation.
S302, the first aggregate NWDAF network element judges whether the analysis expected time is larger than analysis time delay supported by the first aggregate NWDAF network element.
The analysis time delay supported by the first aggregation NWDAF network element is the analysis time delay of the first aggregation NWDAF network element aiming at the analysis ID. The analysis delay supported by the first aggregate NWDAF network element is the sum of the maximum value in the time for the one or more lower NWDAF network elements to analyze the network data and the time for the first aggregate NWDAF to aggregate the one or more lower NWDAF network elements.
In one example, the analysis latency supported by the first aggregate NWDAF network element may be determined by a simulated evaluation of the first aggregate NWDAF network element.
For example, a method of analog evaluation of a first aggregated NWDAF network element may comprise: the first aggregate NWDAF is simulated based on a preset internal algorithm model, and a subordinate NWDAF network element is found through simulation; and the first aggregate NWDAF determines analysis time delay supported by the first aggregate NWDAF according to the number of the lower NWDAF network elements found by simulation and the size of the area to be analyzed.
For example, when the number of the NWDAF network elements at the lower stage is 1 and the area to be analyzed is TAI1/TAI2/TAI3, the analysis delay supported by the NWDAF network elements at the first aggregation is 5ms.
For another example, when the number of NWDAF network elements at the lower stage is 2, the analysis time is 2.5ms when the area to be analyzed is TAI1/TAI2/TAI 3.
It should be noted that, the above-mentioned analysis delay process for determining the support of the first aggregate NWDAF network element is implemented only inside the first aggregate NWDAF network element.
Therefore, the first aggregate NWDAF network element can evaluate the analysis time delay supported by the aggregate NWDAF network element in advance, so that the analysis expected time is compared with the analysis time delay supported by the first aggregate NWDAF network element.
S303, under the condition that the analysis expected time is larger than the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to the NRF network element. Correspondingly, the NRF network element receives a first request message from the first aggregated NWDAF network element.
Wherein the first request message is used to obtain one or more subordinate NWDAF network elements. Illustratively, when the analysis expected time is 3 milliseconds (ms) and the analysis delay supported by the first aggregate NWDAF network element is 2ms, then it is determined that the analysis expected time is greater than the analysis delay supported by the first aggregate NWDAF network element.
The method comprises the steps that a first indication message from an NWDAF service consumption network element is received, the first indication message comprises an analysis identification ID and analysis expected time, network data analysis is used for representing the type of network data to be analyzed, and time required by analysis ID is time for analyzing the network data; and under the condition that the analysis expected time is longer than the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to the NRF network element, the first request message is used for acquiring one or more lower NWDAF network elements, the lower NWDAF network element is used for analyzing network data, and the first analysis time delay is the sum of the maximum time length of analysis of the network data of the plurality of lower NWDAF network elements of the first aggregation NWDAF network element and the aggregation time length of the first aggregation NWDAF network element. Therefore, in the application, the aggregate NWDAF network element only sends a request message to the NRF network element for requesting a subordinate NWDAF network element if the analysis expected time is greater than the analysis time delay supported by the aggregate NWDAF network element. Therefore, the NRF network element can accurately select a proper lower NWDAF network element for the aggregate NWDAF under the condition that the analysis time delay supported by the aggregate NWDAF meets the analysis expected time delay.
In a possible embodiment, as shown in fig. 6, the NWDAF network element determining method provided in the embodiment of the present application further includes the following S304:
s304, under the condition that the analysis expected time is smaller than the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first rejection message to the NWDAF service consumption network element. Correspondingly, the NWDAF service consuming network element receives the first reject message.
The first rejection message is used for indicating that the analysis time delay supported by the first aggregate NWDAF network element is longer than the analysis expected time.
Illustratively, when the analysis expected time is 2 milliseconds (ms) and the analysis delay supported by the first aggregate NWDAF network element is 3ms, the first aggregate NWDAF network element determines that the expected analysis time of the first aggregate NWDAF network element is less than the analysis delay supported by the first aggregate NWDAF network element.
Therefore, the method and the device for analyzing the network element of the NWDAF service send the first rejection message to the NWDAF service consumption network element by judging that the analysis expected time is smaller than the analysis time delay supported by the first NWDAF network element, and further avoid that the analysis time delay supported by the NWDAF network element exceeds the analysis ID.
In a possible embodiment, as shown in fig. 7, the method for determining an NWDAF network element provided in the embodiment of the present application may further include, after S303, the following S401:
S401, the NRF network element sends a first feedback message to the first aggregated NWDAF network element. Correspondingly, the first aggregate NWDAF network element receives a first feedback message of the NRF network element.
Wherein the first feedback information is used to indicate one or more subordinate NWDAF network elements. The one or more lower NWDAF network elements may be configured to analyze the network data corresponding to the analysis ID, and a sum of a maximum value of times that the one or more lower NWDAF network elements analyze the network data and a time that the first aggregate NWDAF network element aggregates the one or more lower NWDAF network elements is less than or equal to a time that the first aggregate NWDAF network element analyzes the network data.
If the first indication message may further include an area to be analyzed, the service area of each of the one or more lower NWDAF network elements may cover the area to be analyzed.
In some embodiments, if the NWDAF service consumption network element does not provide the area to be analyzed, the NRF network element may select a lower NWDAF network element with a service area coverage larger than a preset range from a plurality of lower NWDAFs.
Therefore, the service areas of one or more subordinate NWDAF network elements cover the area to be analyzed, so that the network data of the area to be analyzed can be completely analyzed.
In a possible implementation, as shown in fig. 8, a method provided in an embodiment of the present application may further include:
s501, the first aggregate NWDAF network element sends a second indication message to one or more subordinate NWDAF network elements. Correspondingly, one or more subordinate NWDAF network elements receive the second indication message sent by the first aggregate NWDAF network element.
The second indication message is used for indicating one or more subordinate NWDAF network elements to analyze the network data corresponding to the analysis ID. For example, the second indication message includes an analytics ID.
In one possible implementation manner, after one or more lower NWDAF network elements receive the second indication message sent by the first aggregate NWDAF network element, the lower NWDAF network elements analyze the network data corresponding to the analysis ID to obtain analysis information.
The analysis information of the lower NWDAF network element comprises the analysis result of the lower NWDAF network element on the network data.
For example, quality of service (QoS) may be analyzed to obtain QoS analysis information, which may be used to characterize QoS quality levels.
In one example, a subordinate NWDAF network element may extract network data to be analyzed from a data source
S502, the lower NWDAF sends analysis information to the first aggregate NWDAF network element. Accordingly, the first aggregate NWDAF receives analysis information from one or more subordinate NWDAF network elements.
The embodiment of the application provides a method for determining a network data analysis function NWDAF network element, as shown in fig. 9, the method may further include S601-S602.
S601, the NWDAF service consumption network element sends a second request message to the NRF network element. Correspondingly, the NRF network element receives a second request message of the NWDAF service consuming network element.
Wherein the second request message is used for requesting to aggregate NWDAF network elements. For example, the second request message may include an analysis ID, analysis expected time.
S602, the NRF network element sends a second feedback message to the NWDAF service consumption network element. Correspondingly, the NWDAF service consumption network element receives the second feedback message sent by the NRF network element.
The second feedback message includes an aggregate NWDAF network element list, where the aggregate NWDAF network element list includes identifiers of a plurality of aggregate NWDAF network elements. Each NWDAF element in the NWDAF element list supports analysis ID and has the capability of aggregating the NWDAF elements at the lower level.
It should be noted that the second feedback information may further include an analysis delay of each NWDAF network element in the list for the analysis ID.
Further, the NWDAF service consumer network element may select the first aggregate NWDAF network element from the list of aggregate NWDAF network elements based on a preset rule.
It should be noted that, the preset rule may be to select an NWDAF network element with the shortest analysis delay for the analysis ID in the NWDAF network element list.
The method comprises the steps that an NRF network element receives a second request message of an NWDAF service consumption network element, and the second request message is used for requesting to aggregate the NWDAF network element; and sending a second feedback message to the NWDAF service consumption network element, wherein the second feedback message comprises an aggregate NWDAF network element list, and the aggregate NWDAF network element list comprises identifiers of a plurality of aggregate NWDAF network elements. The NWDAF service consumer network element may select the first aggregated NWDAF network element from the list of aggregated NWDAF network elements based on a preset rule. Thus, the aggregate NEDAF can be accurately determined.
In a possible implementation, the method provided by the embodiment of the application may further include:
the subordinate NWDAF network element sends the multiple network data analysis information to the first aggregate NWDAF network element. The first aggregation NWDAF network element aggregates the plurality of network data information to obtain analysis information; the aggregate NWDAF network element sends the analysis information to the NWDAF service consumption network element.
The embodiment of the present application may divide the functional modules or functional units of the server according to the above method examples, for example, each functional module or functional unit may be divided corresponding to each function, or two or more functions may be integrated in two modules. The integrated modules may be implemented in hardware, or in software functional modules or functional units. The division of the modules or units in the embodiments of the present application is merely a logic function division, and other division manners may be implemented in practice.
Fig. 10 shows a possible structural schematic diagram of the NWDAF network element determining apparatus involved in the above-described embodiment. As shown in fig. 10, the NWDAF network element determining apparatus 90 includes a receiving unit 901 and a transmitting unit 902.
A receiving unit 901, configured to receive a first indication message from an NWDAF service consumption network element, where the first indication message includes an analysis identifier ID and an analysis expected time, where the analysis ID is used to identify a type of network data to be analyzed, and the analysis expected time is a longest analysis time corresponding to the network data to be analyzed. For example, as shown in fig. 6, the reception unit 901 may be used to perform S301.
A sending unit 902, configured to, when an analysis expected time of the network data to be analyzed is greater than or equal to an analysis delay supported by the first aggregate NWDAF network element, send, by the first aggregate NWDAF network element, a first request message to the network database function network element NRF network element, where the first request message is used to request one or more lower NWDAF network elements to analyze the network data, and a sum of a maximum value of times of the one or more lower NWDAF network elements to analyze the network data and a time of the first aggregate NWDAF to aggregate the one or more lower NWDAF network elements is less than or equal to a time of the first aggregate NWDAF network element to analyze the network data. For example, as shown in fig. 6, the transmitting unit 902 may be used to perform S302.
In a possible design, as shown in fig. 6, the sending unit 902 provided in the embodiment of the present application is further configured to: under the condition that the analysis expected time is smaller than the analysis time delay supported by the first aggregation NWDAF network element, a first rejection message is sent to the NWDAF service consumption network element; the first reject message includes a cause value indicating that an analysis delay supported by the first aggregate NWDAF network element is greater than an analysis expected time. For example, as shown in fig. 6, the transmitting unit 902 may be used to perform S304.
In one possible design, the receiving unit 901 provided in the embodiment of the present application is further configured to: and receiving first feedback information from the NRF network element, wherein the first feedback information comprises information of one or more lower NWDAF network elements, the lower NWDAF network elements have the capability of analyzing network data, and the coverage area of the lower NWDAF network elements comprises an area to be analyzed. For example, as shown in fig. 7, the reception unit 901 may be used to perform S401.
In a possible design, the receiving unit 901 provided in this embodiment of the present application is further configured to send a second indication message to one or more subordinate NWDAF network elements, where the second indication message is used to indicate that network data corresponding to the analysis ID is analyzed, and the second indication message includes the analysis ID. For example, as shown in fig. 8, the transmission unit 902 may be used to perform S501.
The receiving unit 901 is further configured to receive analysis information from one or more lower NWDAF network elements, where the analysis information of the lower NWDAF network elements includes analysis results of the network data by the lower NWDAF network elements. For example, as shown in fig. 8, the reception unit 901 may be used to perform S502.
Fig. 11 shows still another possible structural schematic diagram of the NWDAF network element determining apparatus involved in the above-described embodiment. As shown in fig. 11, the NWDAF network element determining apparatus 100 includes a receiving unit 1001, a transmitting unit 1002, and a determining unit 1003.
A receiving unit 1001, configured to receive a first request message from a first aggregate NWDAF network element, where the first request message is used to request a lower NWDAF network element, and the lower NWDAF network element is used to analyze network data; the first aggregate NWDAF network element has network data analysis capability and capability of aggregating lower-level NWDAF network elements, and analysis time delay supported by the first aggregate NWDAF network element is less than or equal to analysis expected time of network data; for example, as shown in fig. 9, the receiving unit 1001 may be used to perform S601.
A sending unit 1002, configured to send first feedback information to the first aggregate NWDAF network element, where the first feedback information includes information of one or more subordinate NWDAF network elements. For example, as shown in fig. 9, the transmission unit 1002 may be used to perform S602.
In a possible design, the receiving unit 1001 is further configured to receive a second request message of the NWDAF service consumption network element, where the second request message requests to aggregate the NWDAF network elements; for example, as shown in fig. 9, the receiving unit 1001 may be used to perform S601.
The sending unit 1002 is further configured to send a second feedback message to the NWDAF service consumption network element, where the second feedback message includes an aggregate NWDAF network element list, and the aggregate NWDAF network element list includes a plurality of aggregate NWDAF network elements. For example, as shown in fig. 9, the transmission unit 1002 may be used to perform S602.
In one possible design, the second request message includes an analysis ID and an area to be analyzed, the analysis ID is used to characterize a type of network data to be analyzed, and the NWDAF network element determining apparatus further includes: a determination unit 1003. A determining unit 1003, configured to determine one or more subordinate NWDAF network elements according to the area to be analyzed; the coverage area of the subordinate NWDAF network element comprises the area to be analyzed.
According to the NWDAF network element determining method, a first indication message from an NWDAF service consumption network element is received, the first indication message comprises an analysis identification ID and analysis expected time, the analysis ID is used for representing the type of network data to be analyzed, the analysis expected time is the analysis expected time of the network data, and the first indication message is used for indicating the first aggregation NWDAF network element to analyze the network data corresponding to the analysis ID; and under the condition that the analysis expected time is larger than the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to the NRF network element, wherein the first request message is used for acquiring one or more lower NWDAF network elements, and the lower NWDAF network element is used for analyzing network data. Therefore, the method and the device can send the indication message to the NRF network element only when the analysis expected time is larger than the analysis time delay supported by the NWDAF network element, so that the first NWDAF network element is prevented from exceeding the analysis expected time of the NWDAF service consumption network element. The aggregate NWDAF network element may be determined more accurately.
From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.
The present application provides a computer program product comprising instructions which, when executed on a computer, cause the computer to perform the method for determining an NWDAF network element of the method embodiment described above.
The embodiment of the present application further provides a computer readable storage medium, where instructions are stored in the computer readable storage medium, when the determining device of the NWDAF network element executes the instructions, the determining device of the NWDAF network element executes each step executed by the determining device of the NWDAF network element in the method flow shown in the above method embodiment.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access Memory (Random Access Memory, RAM), a Read-Only Memory (ROM), an erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), a register, a hard disk, an optical fiber, a portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing, or any other form of computer readable storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuit, ASIC). In the context of the present application, a computer-readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (16)

1. A method for determining a network data analysis function NWDAF network element, which is applied to a first aggregate NWDAF network element, where the first aggregate NWDAF network element has a network data analysis capability and a capability of aggregating a lower NWDAF network element, the method comprising:
receiving a first indication message from an NWDAF service consumption network element, wherein the first indication message comprises an analysis Identification (ID) and an analysis expected time, the analysis ID is used for identifying the type of network data to be analyzed, the analysis expected time is the longest analysis time corresponding to the network data to be analyzed, and the first indication message is used for indicating the first aggregate NWDAF network element to analyze the network data;
and under the condition that the analysis expected time of the network data to be analyzed is greater than or equal to the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to a network database function network element NRF network element, wherein the first request message is used for requesting one or more lower NWDAF network elements to analyze the network data, and the sum of the maximum value in the time of the one or more lower NWDAF network elements for analyzing the network data and the time of the first aggregation NWDAF network element for aggregating the one or more lower NWDAF network elements is less than or equal to the time of the first aggregation NWDAF network element for analyzing the network data.
2. The method according to claim 1, wherein the method further comprises:
sending a first rejection message to the NWDAF serving consumer network element when the analysis expected time of the network data to be analyzed is less than the analysis time delay supported by the first aggregate NWDAF network element; the first rejection message is used for indicating that the analysis time delay supported by the first aggregate NWDAF network element is greater than the analysis expected time.
3. The method of claim 1, wherein the first indication message further comprises an area to be analyzed, the method further comprising:
the first aggregate NWDAF network element receives first feedback information from an NRF network element, the first feedback information being used to indicate one or more subordinate NWDAF network elements, the subordinate NWDAF network elements having the capability of analyzing the network data and a coverage area of the subordinate NWDAF network elements comprising the area to be analyzed.
4. A method according to any one of claims 1-3, wherein the method further comprises:
sending a second indication message to the one or more subordinate NWDAF network elements, wherein the second indication message is used for indicating to analyze the network data;
And receiving analysis information from the one or more lower NWDAF network elements, wherein the analysis information of the lower NWDAF network elements comprises the analysis result of the network data by the lower NWDAF network elements.
5. A method for determining an NWDAF network element of a network data analysis function, applied to an NRF network element, the method comprising:
receiving a first request message from a first aggregate NWDAF network element, wherein the first request message is used for requesting one or more subordinate NWDAF network elements to analyze the network data; the first aggregate NWDAF network element has network data analysis capability and capability of aggregating subordinate NWDAF network elements, and analysis time delay supported by the first aggregate NWDAF network element is smaller than or equal to analysis expected time; the analysis expected time is the longest analysis time corresponding to the network data to be analyzed;
and sending first feedback information to the first aggregate NWDAF network element, wherein the first feedback information is used for indicating one or more lower NWDAF network elements, the one or more lower NWDAF network elements have the capability of analyzing the network data, and the sum of the maximum value in the time for analyzing the network data by the one or more lower NWDAF network elements and the time for aggregating the one or more lower NWDAF network elements by the first aggregate NWDAF network element is smaller than or equal to the time for analyzing the network data by the first aggregate NWDAF network element.
6. The method of claim 5, wherein prior to said receiving the first request message from the first aggregate NWDAF network element, the method further comprises:
receiving a second request message of an NWDAF service consumption network element, wherein the second request message is used for requesting to aggregate the NWDAF network element;
and sending a second feedback message to the NWDAF service consumption network element, wherein the second feedback message NWDAF network element is used for indicating a plurality of aggregation NWDAF network elements, and the plurality of aggregation NWDAF network elements comprise the first aggregation NWDAF network element.
7. The method of claim 6, wherein the step of providing the first layer comprises,
in case the second request message comprises an area to be analyzed, the coverage area of the NWDAF network element and the one or more subordinate NWDAF network elements comprises the area to be analyzed;
and in the case that the second request message does not include the area to be analyzed, the coverage area of the one or more subordinate NWDAF network elements is greater than a preset range.
8. A determining device of a network data analysis function NWDAF network element, which is applied to a first aggregate NWDAF network element, wherein the first aggregate NWDAF network element has a network data analysis capability and a capability of aggregating a lower NWDAF network element, and the NWDAF network element determining device comprises: a receiving unit, a transmitting unit;
A receiving unit, configured to receive a first indication message from an NWDAF service consumption network element, where the first indication message includes an analysis identifier ID and an analysis expected time, where the analysis ID is used to characterize a type of network data to be analyzed, the analysis expected time is an analysis expected time of the network data, and the first indication message is used to instruct a first aggregate NWDAF network element to analyze the network data;
and under the condition that the analysis expected time is greater than or equal to the analysis time delay supported by the first aggregation NWDAF network element, the first aggregation NWDAF network element sends a first request message to a network database function network element NRF network element, wherein the first request message is used for requesting one or more lower NWDAF network elements to analyze the network data, the one or more lower NWDAF network elements are used for analyzing the network data, and the sum of the maximum value of the time of the one or more lower NWDAF network elements to analyze the network data and the time of the first aggregation NWDAF network element to aggregate the one or more lower NWDAF network elements is less than or equal to the time of the first aggregation NWDAF network element to analyze the network data.
9. The apparatus of claim 8, wherein the transmitting unit is further configured to:
Sending a first rejection message to the NWDAF serving consumer network element if the analysis expected time is less than the analysis time delay supported by the first aggregate NWDAF network element; the first rejection message is used for indicating that the analysis time delay supported by the first aggregate NWDAF network element is greater than the analysis expected time.
10. The apparatus of claim 8, wherein the receiving unit is further configured to:
receiving first feedback information from an NRF network element, the first feedback information comprising information of the one or more subordinate NWDAF network elements, the subordinate NWDAF network element having a capability of analyzing the network data and a coverage area of the subordinate NWDAF network element comprising the area to be analyzed.
11. The device according to any one of claims 8-10, wherein,
the sending unit is further configured to send a second instruction message to the one or more subordinate NWDAF network elements, where the second instruction message is used to instruct analysis of network data corresponding to the analysis ID, and the second instruction message includes the analysis ID;
the receiving unit is further configured to receive analysis information from the one or more lower NWDAF network elements, where the analysis information of the lower NWDAF network element includes an analysis result of the network data by the lower NWDAF network element.
12. A determining device of a network data analysis function NWDAF network element, applied to an NRF network element, characterized by comprising: a receiving unit, a transmitting unit;
the receiving unit is configured to receive a first request message from a first NWDAF network element, where the first request message is used to request a lower NWDAF network element, and the lower NWDAF network element is used to analyze network data; the first aggregate NWDAF network element has network data analysis capability and capability of aggregate lower-level NWDAF network elements, and analysis time delay supported by the first aggregate NWDAF network element is smaller than or equal to analysis expected time of the network data;
the sending unit is configured to send first feedback information to the first NWDAF network element, where the first feedback information includes information of one or more lower NWDAF network elements, and a sum of a maximum value of times of the one or more lower NWDAF network elements in analyzing network data and a time of the first NWDAF network element in aggregating the one or more lower NWDAF network elements is less than or equal to a time of the first NWDAF network element in analyzing the network data.
13. The apparatus of claim 12, wherein the device comprises a plurality of sensors,
the receiving unit is further configured to receive a second request message of the NWDAF service consumption network element, where the second request message requests to aggregate the NWDAF network element;
The sending unit is further configured to send a second feedback message to the NWDAF service consumption network element, where the second feedback message includes an aggregate NWDAF network element list, and the aggregate NWDAF network element list includes a plurality of aggregate NWDAF network elements.
14. The apparatus of claim 13, wherein the second request message includes an analysis ID and an area to be analyzed, the analysis ID being used to characterize a type of network data to be analyzed, the NWDAF network element determining apparatus further comprising a determining unit;
the determining unit is configured to determine the one or more subordinate NWDAF network elements according to the area to be analyzed; the coverage area of the subordinate NWDAF network element comprises the area to be analyzed.
15. A communication device, the communication device comprising: a processor, a communication interface, and a memory; wherein the memory is adapted to store one or more programs, the one or more programs comprising computer-executable instructions, which when executed by the communication device, cause the communication device to perform the method of determining an NWDAF network element as claimed in any of claims 1-4, or claims 5-7.
16. A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform the method of determining an NWDAF network element of any of claims 1-4 or claims 5-7.
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