CN112134730B

CN112134730B - Network data acquisition method and device

Info

Publication number: CN112134730B
Application number: CN202010929667.5A
Authority: CN
Inventors: 邱权冠; 苏国章
Original assignee: Guangzhou Aipu Road Network Technology Co Ltd
Current assignee: Guangzhou Aipu Road Network Technology Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2022-02-22
Anticipated expiration: 2040-09-07
Also published as: CN112134730A

Abstract

The application discloses a network data acquisition method and device. The method comprises the following steps: receiving a data acquisition request sent by a network data analysis function (NWDAF); identifying whether the target data to be acquired by the data acquisition request is in an existing acquisition task or not; when target data to be acquired is not in the existing acquisition task, initiating a data acquisition task creation request to a target acquisition object; receiving data acquisition task creation feedback information returned by the target acquisition object; when the data acquisition task creation feedback information is a data acquisition task creation success message, sending a data acquisition task creation success response to the network data analysis function NWDAF; receiving target data acquired by the target acquisition object and storing the target data in a database; and acquiring the target data and sending the target data to the network data analysis function NWDAF. The method and the device reduce the complexity of network communication and improve the efficiency of network communication and data storage.

Description

Network data acquisition method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a network data acquisition method and apparatus.

Background

In the fifth generation mobile communication (5)^thGeneration, 5G) system, a Network Data analysis Function (NWDAF) is introduced. The NWDAF can collect Network data from an Operation Administration and Maintenance (OAM), an Application Function (AF), and a 5G Network Function (NF), analyze the Network data, and feed back a Network data analysis result.

In the prior art, in the data analysis process, NWDAF needs to subscribe a large amount of network data in target collection objects such as network function NF, application function AF, network management function OAM, and the like, and in some analysis tasks, historical data may need to be called, or data collection is performed for a long time in one data analysis task, so that when there are multiple NWDAFs and respective data analysis tasks need to subscribe to the same NF data, the efficiency and performance of network communication are reduced. Moreover, each NWDAF needs to store and manage respective historical analysis data, which increases the complexity of network data management, limits data sharing among the NWDAFs, and reduces network data storage efficiency.

Therefore, it is desirable to provide a network data acquisition method and apparatus, which implement centralized management and shared storage of NWDAF network data acquisition tasks, thereby improving network access and data storage efficiency.

Disclosure of Invention

The embodiment of the application provides a network data acquisition method and device. Specifically, a network data acquisition method includes:

receiving a data acquisition request sent by a network data analysis function (NWDAF);

identifying whether the target data to be acquired by the data acquisition request is in an existing acquisition task or not;

when target data to be acquired is not in the existing acquisition task, initiating a data acquisition task creation request to a target acquisition object;

receiving data acquisition task creation feedback information returned by the target acquisition object;

when the data acquisition task creation feedback information is a data acquisition task creation success message, sending a data acquisition task creation success response to the network data analysis function NWDAF;

receiving target data acquired by the target acquisition object and storing the target data in a database;

and acquiring the target data and sending the target data to the network data analysis function NWDAF.

Further, when the target data to be acquired is in the existing acquisition task, a data acquisition task creation success response is sent to the network data analysis function NWDAF.

Further, when the data acquisition request feedback information creates a failure message for the data acquisition task, the data acquisition task is destroyed.

Further, the network data acquisition method provided by the embodiment of the application further includes:

receiving a historical data acquisition request sent by a network data analysis function (NWDAF);

searching target data in a database according to the historical data acquisition request;

and if the target data in the database is found, acquiring the target data in the database and sending the target data to the network data analysis function NWDAF, otherwise, returning an error message.

and if the data acquisition request is expired or the data acquisition task is completed, destroying the data acquisition task.

An embodiment of the present application further provides a network data acquisition device, including:

the system comprises an acquisition task management unit, a time management unit, a data storage management unit and a data acquisition management unit.

The collection task management unit is used for: receiving a data acquisition request sent by a network data analysis function (NWDAF);

the time management unit is used for: identifying whether the target data to be acquired by the data acquisition request is in an existing acquisition task or not;

the data acquisition management unit is used for: when the time management unit identifies that target data to be acquired is not in the existing acquisition task, a data acquisition task creation request is initiated to a target acquisition object;

the data acquisition management unit is further configured to: receiving data acquisition task creation feedback information returned by the target acquisition object;

the collection task management unit is further configured to: when the data acquisition management unit receives the data acquisition task creation feedback information as a data acquisition task creation success message, sending a data acquisition task creation success response to the network data analysis function NWDAF;

the data storage management unit is used for: receiving target data acquired by the target acquisition object and storing the target data in a database;

the collection task management unit is further configured to: and acquiring the target data and sending the target data to the network data analysis function NWDAF.

Further, the collection task management unit is further configured to: and when the time management unit identifies that the target data to be acquired is in the existing acquisition task, sending a data acquisition task creation success response to the network data analysis function NWDAF.

Further, the collection task management unit is further configured to: and when the data acquisition management unit receives the data acquisition task creation feedback information and creates a failure message for the data acquisition task, destroying the data acquisition task.

Further, the collection task management unit is further configured to: receiving a historical data acquisition request sent by a network data analysis function (NWDAF);

the time management unit is further configured to: searching target data in a database according to the historical data acquisition request;

if the acquisition task management unit is found, the acquisition task management unit is further configured to: and acquiring target data in a database through the data storage unit, and sending the target data to the network data analysis function NWDAF, otherwise, returning an error message.

Further, the collection task management unit is further configured to: and if the data acquisition request is expired or the data acquisition task is completed, destroying the data acquisition task.

According to the network data acquisition method and device provided by the embodiment of the application, the shared data acquisition function SCDF (share data collection function) is added to intensively manage and schedule the NWDAF data acquisition tasks and share and store the acquired data, so that the problems that a plurality of NWDAFs repeatedly acquire the same data, the resource is wasted, the historical data acquired by the NWDAF cannot be shared and the like are solved, the network communication complexity is reduced, and the network communication efficiency and the data storage efficiency are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, are incorporated in and constitute a part of this disclosure. The exemplary embodiments and descriptions thereof are provided to explain the present application and do not constitute an undue limitation on the present application. In the drawings:

fig. 1 is a topology diagram of a network data analysis function NWDAF deployment in the prior art;

FIG. 2 is a diagram of a distributed or centralized network data storage topology external to the network data analysis function NWDAF;

fig. 3 is a system architecture diagram of a network data acquisition method and apparatus according to an embodiment of the present application;

fig. 4 is a schematic flow chart of an embodiment of a method provided in the present application.

Fig. 5 is a schematic flow chart of an embodiment of the method provided by the present application in a specific application scenario.

Fig. 6 is a schematic flowchart of historical data sharing in the method provided by the present application.

Fig. 7 is a schematic block diagram of an apparatus according to an embodiment of the present disclosure.

Fig. 8 is a schematic flow chart illustrating creation of a data collection task according to an embodiment of the apparatus provided in the present application.

Fig. 9 is a schematic flow chart illustrating successful data acquisition according to an embodiment of the apparatus provided in the present application.

Fig. 10 is a schematic flowchart illustrating history data sharing according to an embodiment of the apparatus provided in the present application.

Detailed Description

The embodiment of the present application may be applied to, but not limited to, a 5G system, an LTE system, a long term evolution-advanced (LTE-a) system, an enhanced long term evolution-advanced (LTE) communication system, and the like, and may also be extended to a cellular system related to wireless fidelity (WiFi), worldwide interoperability for microwave access (wimax), and third generation partnership project (3 GPP).

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Hereinafter, some terms in the present application are explained to facilitate understanding by those skilled in the art.

Network Function (NF): the NF is a processing function in the network, defines functional behaviors and interfaces, can be realized as special hardware, can be realized by running software on the special hardware, and can be realized in a virtual function mode on a general hardware platform, so that the NF can comprise a physical network function and/or a virtual network function.

Network Data analysis Function (NWDAF): the network functions introduced in the 3GPP standards are mainly used for analyzing data related to network slices. The functionality may be further extended to the analysis of various types of network data, including network operational data collected from network functions, terminal and network related statistics obtained from network management functions (OAM), and Application data obtained from third party Applications (AF).

The technical scheme of the embodiment of the application relates to a network data acquisition method and device. Fig. 1 is a topology diagram of a network data analysis function NWDAF deployment in the prior art. Referring to fig. 1, each NWDAF collects NF data required by the NWDAF during data analysis, and each NWDAF has its own database to store current and historical collected data. Such a network architecture has the following problems: when a plurality of NWDAFs collect the current and historical data of the same NF for a long time or at a certain time, the data collection efficiency is not high; the data collected by each NWDAF is stored in a database of the NWDAF, so that unified management is inconvenient; the data collected among the NWDAFs cannot be shared, and the storage efficiency is not high.

Although the data sharing and the data storage and retransmission avoidance can be achieved by means of the external distributed or centralized database of fig. 2 for storing historical data, because there is no unified data acquisition task management center, there still exists a situation that a plurality of NWDAFs need to issue the same data acquisition message according to their own data analysis tasks, and the network communication efficiency is not high.

In order to solve the above problems, in the network data acquisition method and apparatus according to the embodiments of the present application, a shared data acquisition function scdf (share data collection function) is added to uniformly manage and schedule NWDAF data acquisition messages and uniformly store acquired data. Referring to fig. 3, when a plurality of NWDAFs need to acquire network data, a network data acquisition request is sent to the SDCF, the SDCF manages a data acquisition request task of each NWDAF, and if more than two NWDAFs acquire the same network data, the same request tasks are merged, and only one data acquisition message is sent to the NF in the network, thereby avoiding repeated acquisition of network data.

After each NF receives a network data acquisition message sent by the SDCF, the acquired network data is submitted to the SDCF for unified management and storage, the SDCF can use an internal database or an external centralized and distributed database to store the corresponding acquired data, and the SDCF is used for uniformly storing the acquired network data, so that the problem of repeated storage of the same data is avoided.

The SDCF may submit one collected data to one or more NWDAFs simultaneously according to the time specified in the NWDAF network data collection request, and the NWDAF may also acquire historical data collected by other NWDAFs through the SDCF.

Fig. 4 is a schematic flow chart of an embodiment of a method provided in the present application. Referring to fig. 4, the network data acquisition method provided in this embodiment includes:

step S100: and receiving a data acquisition request sent by a network data analysis function NWDAF.

Specifically, the NWDAF sends a data acquisition request to the SCDF, where the request carries data acquisition request information, where the request information includes, but is not limited to, a network identifier or an address, a type of a target acquisition object, and a time range for acquiring data. The SCDF receives a data acquisition request sent by a network data analysis function NWDAF. The target acquisition object in the present application refers to a network entity whose data needs to be acquired for analysis by a network data analysis function NWDAF, and includes a network function NF, a network management function OAM, an application function AF, and the like.

Step S200: and identifying whether the target data to be acquired by the data acquisition request is in the existing acquisition task.

Specifically, after receiving a data acquisition request sent by a network data analysis function NWDAF, the SCDF identifies whether the data to be acquired is in an existing acquisition task according to the network identifier, address, type, and time range of the acquired data of a target acquisition object in the request information.

Step S300: and when the target data to be acquired is not in the existing acquisition task, initiating a data acquisition task creation request to the target acquisition object.

Specifically, when the SCDF identifies that the target data to be acquired is not in the existing acquisition task, a data acquisition task creation request is initiated to the target acquisition object according to the network identifier, address, type, time range of data acquisition, and the like of the target acquisition object in the request information.

Step S400: and receiving data acquisition task creation feedback information returned by the target acquisition object.

Specifically, the target collection object receives a data collection task creation request initiated by the SCDF, judges whether the SCDF can collect the data according to the current situation, and returns data collection task creation feedback information. If the data can be collected, returning a successful data collection task creation message; otherwise, returning a data acquisition task creation failure message. The SCDF receives the data acquisition task creation feedback information returned by the target acquisition object.

Step S500: and when the data acquisition task creation feedback information is a data acquisition task creation success message, sending a data acquisition task creation success response to the network data analysis function NWDAF.

Specifically, when the SCDF receives data acquisition task creation feedback information returned by the target acquisition object as a data acquisition task creation success message, the SCDF sends a data acquisition task creation success response to the network data analysis function NWDAF.

Step S600: and receiving target data acquired by the target acquisition object and storing the target data in a database.

Specifically, after the target data is acquired by the target acquisition object, the target data is sent to the SDCF, and the SDCF stores the acquired target data in the database. The database can be established locally in the SDCF, or a distributed or centralized network database can be adopted, and the collected target data can be stored uniformly through a large-capacity database or a database cluster.

Step S700: and acquiring the target data and sending the target data to the network data analysis function NWDAF.

And the SDCF stores the acquired target data into a database and simultaneously transmits the target data to a network data analysis function NWDAF. And if the target data is in the database, directly acquiring the target data from the database and sending the target data to a network data analysis function NWDAF.

Further, in the method according to the foregoing method embodiment, the method further includes: and when the target data to be acquired is in the existing acquisition task, sending a data acquisition task creation success response to the network data analysis function NWDAF.

Specifically, after step S200, when the SCDF identifies that the target data to be acquired is in the existing acquisition task, it is not necessary to initiate a data acquisition task creation request to the target acquisition object, but directly execute step S500, and send a data acquisition task creation success response to the network data analysis function NWDAF.

Further, in the method according to the foregoing method embodiment, the method further includes: and when the data acquisition request feedback information creates a failure message for the data acquisition task, destroying the data acquisition task.

Specifically, after step S400, when the SCDF receives the data collection task creation feedback information returned by the target collection object as a data collection task creation failure message, the SCDF destroys the data collection task and sends a data collection task creation failure response to the network data analysis function NWDAF.

Further, in the method according to the foregoing method embodiment, the method further includes:

Specifically, the NWDAF may send a historical data acquisition request to the SCDF according to a requirement of the data analysis task, where the request carries data acquisition request information, and the request information includes, but is not limited to, a network identifier or an address of a target acquisition object, a type of the target acquisition object, a time range of acquiring data, and the like. And the SCDF searches the matched target data in the database according to the network identification or the address, the type, the time range of the acquired data and the like of the target acquisition object in the request information, if the matched target data is searched, the target data in the database is acquired and sent to the network data analysis function NWDAF, otherwise, an error message is returned.

Specifically, when the time range of the target data to be acquired by the data acquisition request sent by the network data analysis function NWDAF is expired and the target data cannot be found in the historical data, the data acquisition task is destroyed.

And when the data acquisition task is completed, destroying the data acquisition task. And the data acquisition tasks which are completed or can not be carried out are destroyed in time, so that the network message resources are saved.

The following describes in detail a specific flow of the network data acquisition method provided in the embodiment of the present application in combination with an application scenario.

Referring to fig. 5, a network data analysis function NWDAF _1 sends a data acquisition request 1 to a shared data acquisition function SDCF, and after receiving the data acquisition request 1 of NWDAF _1, the SDCF identifies whether target data to be acquired by the data acquisition request 1 is in an existing acquisition task, and when finding that the target data to be acquired is not in the existing acquisition task, the SDCF initiates a data acquisition task creation request to a target acquisition object NF, OAM, or AF.

And judging whether the target data can be acquired by the target acquisition object NF, OAM or AF, and returning data acquisition task creation feedback information to the SDCF according to a judgment result: if the SDCF can collect the target data, a successful data collection task creation message is returned, otherwise, a failed data collection task creation message is returned. In fig. 5, a data collection task creation success message is returned.

And after receiving a data acquisition task creation success message returned by the target acquisition object NF, OAM or AF, the SDCF sends a data acquisition task creation success response to the corresponding network data analysis function NWDAF _ 1.

So far, the data collection task initiated by the network data analysis function NWDAF _1 is successfully created. A target collection object NF, OAM or AF starts to collect data according to the type, time range and other information requested by the data collection request 1; after the SDCF data acquisition task is successfully created, relevant information related to the data acquisition task is recorded, wherein the relevant information comprises an NWDAF initiating the acquisition task, a network identifier or address or type of a target acquisition object, a time range of data acquisition and the like.

Referring to fig. 5, when the network data analysis function NWDAF _2 sends a data acquisition request 2 to the shared data acquisition function SDCF, after receiving the data acquisition request 2 of the NWDAF _2, the SDCF identifies whether target data to be acquired by the data acquisition request 2 is in an existing acquisition task, and when finding that the target data to be acquired is in the existing acquisition task, the SDCF directly returns a data acquisition task creation success message to the NWDAF _ 2.

It can be seen that, if target data to be acquired by a data acquisition request initiated by a network data analysis function NWDAF has been acquired by other NWDAFs, the network data acquisition method of the present application centrally manages and schedules the data acquisition tasks of the NWDAFs by a shared data acquisition function SCDF, so that repeated establishment of multiple identical acquisition tasks can be avoided, and network communication efficiency is improved.

When a plurality of data acquisition requests exist at the same time and the same target data is requested, the SCDF records the information about the data acquisition tasks, including the NWDAF initiating the acquisition task, the network identification or address or type of the target acquisition object, the time range of data acquisition and the like.

Referring to fig. 5, a target collection object NF, OAM, or AF sends collected data to a shared data collection function SDCF, and after receiving data sent by the target collection object, the SDCF stores the collected data in a database, and sends the target data to network data analysis functions NWDAF _1 and NWDAF _2, respectively, according to a currently established data collection task.

It should be noted that the process of sending the acquired data to the SDCF by the target acquisition object and sending the acquired data to the NWDAF through the SDCF may be performed in real time, or may be distributed uniformly after completing an acquisition task of a certain time period, and may be specifically determined according to the user requirement of the user.

In addition, the network data acquisition method can be used for acquiring targets between different data acquisition tasks, whether the targets are completely overlapped or partially overlapped. When the target data of the subsequent data acquisition task is a subset of the target data of the previously created data acquisition task, the data acquisition task is directly created, and the target data of the subsequent data acquisition task can be selected from the target data through the previously created data acquisition task and sent to the corresponding network data analysis function NWDAF. When the target data of the subsequent data acquisition task and the target data of the previously created data acquisition task have intersection and are not subsets of the data acquisition task, the intersection part can be directly obtained through the previously created data acquisition task, and the non-intersection part can be obtained through the separately created task. The above various situations are specific applications of the network data acquisition method of the present application in different situations, and are not described herein.

The following describes in detail a specific process of collecting historical data in the network data collection method provided in the embodiment of the present application, with reference to an application scenario.

Referring to fig. 6, when the network data analysis functions NWDAF _1 and NWDAF _2 are required by the network data analysis task, a request for collecting historical data may be sent to the shared data collection function SCDF, and the SDCF searches for corresponding target data from the database according to information such as a network identifier or an address, a type, and a time range of collecting data of a target collection object in the request, and if the target data is found, returns the corresponding target data, otherwise returns an error message.

The application also provides a network data acquisition device. Fig. 7 is a schematic block diagram of an apparatus according to an embodiment of the present disclosure. Referring to fig. 7, the network data collecting apparatus provided in this embodiment includes: the system comprises an acquisition task management unit, a time management unit, a data acquisition management unit and a data storage management unit.

Specifically, the SDCF units function as follows:

the collection task management unit: the system is responsible for managing the NWDAF data requesting data acquisition, the corresponding acquisition task data and the like, and is responsible for creating and destroying data acquisition tasks.

A time management unit: the system is responsible for identifying and managing time-related parameters such as validity of data acquisition time required in the NWDAF data acquisition request and target data time period of the identification request, and sending the acquired data to the NWDAF at regular time.

A data storage management unit: and the database management system is responsible for storing the collected data in a corresponding database or database cluster.

The data acquisition management unit: the data acquisition system is responsible for transmitting data acquisition messages with NF, OAM or AF, storing data of each NF, OAM or AF, such as IP addresses, NF types and the like, acquiring collected data and the like.

The functions of the units are described in further detail below with reference to specific usage flows.

The collection task management unit is used for: and receiving a data acquisition request sent by a network data analysis function NWDAF.

Specifically, refer to the data collection task creation flow chart shown in fig. 8. The network data analysis function NWDAF sends a data acquisition request to the shared data acquisition function SCDF, where the request carries data acquisition request information, where the request information includes, but is not limited to, a network identifier or an address, a type, a time range for acquiring data, and the like of a target acquisition object. And the acquisition task management unit receives a data acquisition request sent by the NWDAF and creates a corresponding data acquisition task for the request. And searching whether a data acquisition task for the target acquisition object exists in a current data acquisition task list according to the network identifier, the address and the type of the target acquisition object in the request, if so, providing the target acquisition object information in the request to a time management unit, and further judging whether the time range of the target data is overlapped with the current data acquisition task through the time management unit. And if the data acquisition task for the target acquisition object is not performed in the current data acquisition task list, directly providing the target acquisition object information to the time management unit.

The time management unit is used for: and identifying whether the target data to be acquired by the data acquisition request is in the existing acquisition task.

Specifically, when receiving the target acquisition object information provided by the acquisition task management unit, the time management unit identifies whether the data to be acquired is in the existing acquisition task according to the network identifier or the address, the type, the time range of the acquired data, and the like of the target acquisition object in the request information. If the current collection task is in the existing collection task, the current collection task is fed back to the collection task management unit; if not, recording the time range required by the data acquisition task, and providing the target acquisition object information to the data acquisition management unit.

The data acquisition management unit is used for: and when the time management unit identifies that the target data to be acquired is not in the existing acquisition task, initiating a data acquisition task creation request to the target acquisition object.

Specifically, after receiving the target acquisition object information provided by the time management unit, the data acquisition management unit initiates a data acquisition task creation request to the target acquisition object according to the network identifier, address, type, and time range of data acquisition of the target acquisition object in the request information.

The data acquisition management unit is further configured to: and receiving data acquisition task creation feedback information returned by the target acquisition object.

Specifically, after receiving a data acquisition task creation request initiated by the data acquisition management unit, the target acquisition object determines whether the data can be acquired according to the current situation, and returns data acquisition task creation feedback information to the data acquisition management unit. If the data can be collected, returning a successful data collection task creation message; otherwise, returning a data acquisition task creation failure message. And the data acquisition management unit receives data acquisition task creation feedback information returned by the target acquisition object and sends the feedback information to the acquisition task management unit.

The collection task management unit is further configured to: and when the data acquisition management unit receives the data acquisition task creation feedback information and creates a success message for the data acquisition task, sending a data acquisition task creation success response to the network data analysis function NWDAF.

Specifically, when the acquisition task management unit receives data acquisition task creation feedback information returned by the target acquisition object and sent by the data acquisition management unit as a data acquisition task creation success message, a data acquisition task creation success response is sent to the network data analysis function NWDAF.

The data storage management unit is used for: and receiving target data acquired by the target acquisition object and storing the target data in a database.

Specifically, after target data are collected by a target, the target data are sent to the data collection management unit, the data collection management unit submits the collected target data to the time management unit, corresponding time stamps are printed on the target data, the target data are submitted to the data storage unit, and the data storage unit stores the collected target data in the database. The database can be established locally in the SDCF, or a distributed or centralized network database can be adopted, and the collected target data can be stored uniformly through a large-capacity database or a database cluster.

Specifically, the data storage management unit stores the acquired target data in a database, and the acquisition task management unit sends the target data to a network data analysis function NWDAF.

If the time management unit finds that the data acquisition time in one acquisition task reaches or the data acquisition unit receives target data in a real-time acquisition data task, a data submission flow is triggered, the acquisition task management unit is informed to acquire the corresponding target data in the database through the data storage unit, and the corresponding target data are submitted to the corresponding NWDAF. And if the target data is already in the database, directly acquiring the target data from the database and sending the target data to the corresponding NWDAF.

Further, in the apparatus according to the above embodiment of the apparatus, the apparatus further includes:

the collection task management unit is further configured to: and when the time management unit identifies that the target data to be acquired is in the existing acquisition task, sending a data acquisition task creation success response to the network data analysis function NWDAF.

Specifically, when the time management unit receives target acquisition object information provided by the acquisition task management unit, and determines that the target data coincides with the currently performed data acquisition task, the time management unit feeds back the target data to the acquisition task management unit, and after receiving feedback that the time management unit determines that the target data coincides with the currently performed data acquisition task, the acquisition task management unit sends a data acquisition task creation success response to the network data analysis function NWDAF.

the collection task management unit is further configured to: and when the data acquisition management unit receives the data acquisition task creation feedback information and creates a failure message for the data acquisition task, destroying the data acquisition task.

Specifically, after receiving a data acquisition task creation request initiated by the data acquisition management unit, the target acquisition object determines whether the data can be acquired according to the current situation, and returns data acquisition task creation feedback information to the data acquisition management unit. And if the data cannot be acquired, returning a data acquisition task creation failure message. And the data acquisition management unit receives data acquisition task creation failure feedback information returned by the target acquisition object and sends the data acquisition task creation failure feedback information to the acquisition task management unit. And when the acquisition task management unit receives a data acquisition task creation failure message sent by the data acquisition management unit, the data acquisition task is destroyed.

the collection task management unit is further configured to: receiving a historical data acquisition request sent by a network data analysis function (NWDAF);

Specifically, the flow chart for obtaining the historical data is described with reference to fig. 10.

The NWDAF may send a historical data acquisition request to the SCDF according to the requirement of the data analysis task, where the request carries data acquisition request information, and the request information includes, but is not limited to, a network identifier or an address of a target acquisition object, a type of the target acquisition object, a time range for acquiring data, and the like. After receiving the historical acquisition request, the acquisition task management unit stores relevant information such as network identification, address, type and the like of the target acquisition object and forwards the request information to the time management unit.

And the time management unit receives the request information forwarded by the acquisition task management unit, searches for matched target data in the database according to the network identifier or address, type, time range of acquired data and the like of the target acquisition object in the request information, and if the matched target data are found, informs the acquisition task management unit to acquire corresponding target data in the database through the data storage unit and submits the corresponding target data to the corresponding NWDAF.

the collection task management unit is further configured to: and if the data acquisition request is expired or the data acquisition task is completed, destroying the data acquisition task.

Specifically, when the time management unit finds that the time required by the data acquisition task to acquire the data is expired or one data acquisition task is completed, the time management unit notifies the data acquisition task management unit to destroy the data acquisition task.

The technical scheme of the embodiment of the application also relates to a computer readable storage medium. The computer readable storage medium stores a computer program, which when executed by a processor implements the steps of the network data acquisition method and all possible implementation methods of various preferred implementation methods thereof as provided by the foregoing method embodiments of the present application.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and in actual implementation, there may be other divisions, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of communication units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The integrated system/module/unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the methods of the various embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the various method embodiments described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a usb disk, a recording medium, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Random Access Memory (RAM), a Read-Only Memory (ROM), an electrical carrier signal, a telecommunications signal, a software distribution medium, etc. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A method for collecting network data, comprising:

when the target data to be collected is not in the existing collection task, a data collection task creation request is initiated to the target collection object,

receiving data acquisition task creation feedback information returned by the target acquisition object,

when the data acquisition task creation feedback information is a data acquisition task creation success message, sending a data acquisition task creation success response to the network data analysis function NWDAF,

or when the target data to be acquired is in the existing acquisition task, sending a data acquisition task creation success response to the network data analysis function NWDAF;

2. The method of claim 1, wherein the data collection task is destroyed when the data collection task creation feedback information creates a failure message for the data collection task.

3. The method of claim 1, further comprising:

4. The method of claim 1, further comprising:

5. A network data acquisition device is characterized by comprising an acquisition task management unit, a time management unit, a data acquisition management unit and a data storage management unit;

the collection task management unit is further configured to: when the time management unit identifies that target data to be acquired is in the existing acquisition task, sending a data acquisition task creation success response to the network data analysis function NWDAF;

6. The apparatus of claim 5,

7. The apparatus of claim 5,

if the acquisition task management unit is found, the acquisition task management unit is further configured to: and acquiring target data in a database through the data storage management unit, and sending the target data to the network data analysis function NWDAF, otherwise, returning an error message.

8. The apparatus of claim 5,