CN115915174A

CN115915174A - Network state information acquisition method and equipment

Info

Publication number: CN115915174A
Application number: CN202211188261.1A
Authority: CN
Inventors: 谢涵; 王丹
Original assignee: Guangzhou Aipu Road Network Technology Co Ltd
Current assignee: Guangzhou Aipu Road Network Technology Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-04-04
Anticipated expiration: 2042-09-28
Also published as: CN115915174B

Abstract

The application provides a method and equipment for acquiring network state information, and relates to the technical field of communication. The method comprises the following steps: responding to an initiation request of a terminal device, and sending an analysis identifier acquisition request to a UDM, wherein the request comprises: the method comprises the steps that terminal equipment obtains a demand reason of network state information, and the UDM determines an analysis identifier of a network state analysis service according to the demand reason; receiving an analysis identifier sent by the UDM; sending an analysis subscription request to the NWDAF, wherein the analysis subscription request comprises: analyzing the identification, and performing network state analysis by the NWDAF according to the analysis identification to obtain at least one network state analysis result; and receiving the network state analysis result sent by the NWDAF and forwarding the network state analysis result to the terminal equipment, so that the terminal equipment determines the available network resources of the terminal equipment according to the network state information in the network state analysis result. The method and the device can reduce the signaling transmission times between the terminal equipment and the network when the terminal equipment acquires the network state information, and reduce the network burden.

Description

Network state information acquisition method and equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a device for acquiring network status information.

Background

The federated learning method is based on a machine learning framework, and can perform combined modeling on the premise of ensuring that data of a plurality of organizations are not shared, so as to ensure the data privacy and safety of each organization.

For the terminal equipment, the artificial intelligence or machine learning application in the terminal equipment trains the model by using local data, then the weight of the local model is uploaded to the central server, the central server performs combined training on the model according to the weight uploaded by each terminal equipment to obtain the optimal parameter of the model, and then the terminal equipment downloads the model from the central server to complete local machine learning operation.

The terminal device needs to occupy network resources in the process of transmitting the local model and the parameters to the central server, and for this reason, the terminal device needs to acquire network state information first so as to determine the network resources which can be used in the process of transmitting the local model and the parameters according to the network state information.

In the existing method for acquiring network status information, a terminal device initiates multiple requests to a network according to multiple pieces of network status information acquired as needed, and respectively receives the network status information sent by a network data analysis function NWDAF, which results in multiple signaling transmissions between the terminal device and the network and increases network load.

Disclosure of Invention

The present invention provides a method and a device for acquiring network status information, so as to reduce the number of signaling transmissions between a terminal device and a network when acquiring network status information, and reduce the network load.

In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:

in a first aspect, an embodiment of the present application provides a method for acquiring network state information, where the method is applied to an access and mobility management function (AMF), and the method includes:

responding to an initiating request sent by terminal equipment, and sending an analysis identifier acquisition request to a Universal Data Management (UDM), wherein the initiating request and the analysis identifier acquisition request both comprise: the terminal equipment acquires a requirement reason of network state information, so that when the UDM determines that a core network has a network state analysis function, an analysis identifier of at least one corresponding network state analysis service is determined according to the requirement reason;

receiving the analysis identifier sent by the UDM;

sending an analysis subscription request to a network data analysis function NWDAF, where the analysis subscription request includes: the analysis identifier enables the NWDAF to perform network state analysis according to the analysis identifier to obtain at least one network state analysis result;

and receiving the network state analysis result sent by the NWDAF and forwarding the network state analysis result to the terminal equipment, so that the terminal equipment determines available network resources of the terminal equipment according to network state information in the at least one network state analysis result.

Optionally, the analyzing the subscription request further includes: the reason for the demand; so that the NWDAF sends a user permission information confirmation message to the UDM, the user permission information confirmation message comprising: the demand reason enables the UDM to determine whether the terminal equipment subscribes the network state analysis service in advance according to the demand reason;

and after determining that the terminal equipment subscribes to the network state analysis service in advance, the NWDAF performs network state analysis according to the analysis identifier to obtain at least one network state analysis result.

Optionally, after sending the analysis identifier obtaining request to the universal data management UDM, the method further includes:

receiving a first rejection message sent by the UDM after the core network is determined not to have the network state analysis function;

and sending the first rejection message to the terminal equipment to indicate that the core network cannot provide the network state analysis function for the terminal equipment.

Optionally, after sending the analysis subscription request to the network data analysis function NWDAF, the method further includes:

receiving a second rejection message sent by the NWDAF after the terminal equipment is determined not to subscribe to the network state analysis service;

and sending the second rejection message to the terminal equipment to indicate that the terminal equipment is not subscribed to the network state analysis service.

Optionally, the initiating request further includes: providing a reporting period for network status information, the method further comprising:

receiving the at least one network state analysis result sent by the NWDAF according to the report period in a timing mode;

and forwarding the network state analysis result to the terminal equipment, so that the terminal equipment determines available network resources of the terminal equipment at regular time according to the network state information in the at least one network state analysis result.

In a second aspect, an embodiment of the present application further provides a method for acquiring network status information, where the method is applied to a network data analysis function NWDAF, and the method includes:

receiving an analysis subscription request sent by an access and mobility management function (AMF), wherein the analysis subscription request comprises: at least one analysis identifier, where the analysis identifier is an identifier of at least one network status analysis service determined by the UDM according to a reason for a requirement that the terminal device acquires network status information when the UDM determines that a core network has a network status analysis function after the AMF sends an analysis identifier acquisition request to a universal data management UDM in response to an initiation request sent by the terminal device, where the initiation request and the analysis identifier acquisition request both include: the reason for the demand;

analyzing the network state according to the analysis identifier to obtain at least one network state analysis result;

and sending the at least one network state analysis result to the AMF, so that the AMF forwards the at least one network state analysis result to the terminal equipment, and the terminal equipment determines available network resources of the terminal equipment according to network state information in the at least one network state analysis result.

Optionally, the analyzing the subscription request further includes: before the network state analysis is performed according to the analysis identifier to obtain at least one network state analysis result, the method further includes:

sending a user permission information confirmation message to the UDM, so that the UDM determines whether the terminal equipment subscribes to the network state analysis service in advance according to the requirement reason;

and if the terminal equipment is determined to subscribe the network state analysis service in advance, performing network state analysis according to the analysis identifier to obtain at least one network state analysis result.

Optionally, after sending the user permission information confirmation message to the UDM, the method further includes:

and if the terminal equipment is determined not to subscribe the network state analysis service in advance, sending a rejection message corresponding to the analysis subscription request to the AMF, so that the AMF sends the rejection message to the terminal equipment.

Optionally, the analyzing the subscription request further includes: providing a reporting period for network status information, the method further comprising:

and sending the at least one network state analysis result to the AMF at regular time according to the report period, so that the AMF forwards the at least one network state analysis result to the terminal equipment at regular time, and the terminal equipment determines available network resources of the terminal equipment at regular time according to network state information in the at least one network state analysis result.

In a third aspect, an embodiment of the present application provides a network status information obtaining apparatus, which is applied to an access and mobility management function AMF, where the apparatus includes:

an analysis identifier obtaining request sending module, configured to send, in response to an initiation request sent by a terminal device, an analysis identifier obtaining request to a universal data management UDM, where the initiation request and the analysis identifier obtaining request both include: the terminal equipment acquires a requirement reason of network state information, so that when the UDM determines that a core network has a network state analysis function, an analysis identifier of at least one corresponding network state analysis service is determined according to the requirement reason;

the analysis identifier receiving module is used for receiving the analysis identifier sent by the UDM;

an analysis subscription request sending module, configured to send an analysis subscription request to a network data analysis function NWDAF, where the analysis subscription request includes: the analysis identifier enables the NWDAF to perform network state analysis according to the analysis identifier to obtain at least one network state analysis result;

and the analysis result forwarding module is used for receiving the network state analysis result sent by the NWDAF and forwarding the network state analysis result to the terminal equipment, so that the terminal equipment determines the available network resources of the terminal equipment according to the network state information in the at least one network state analysis result.

Optionally, the analyzing the subscription request further includes: the reason for the demand; so that the NWDAF sends a user permission information confirmation message to the UDM, the user permission information confirmation message comprising: the demand reason enables the UDM to determine whether the terminal equipment subscribes to the network state analysis service in advance according to the demand reason;

Optionally, the apparatus further comprises:

a reject message receiving module, configured to receive a first reject message sent by the UDM after determining that the core network does not have the network status analysis function;

and the rejection message forwarding module is used for sending the first rejection message to the terminal equipment so as to indicate that the core network cannot provide the network state analysis function for the terminal equipment.

Optionally, the reject message receiving module is further configured to receive a second reject message sent by the NWDAF after determining that the terminal device does not subscribe to the network status analysis service;

the reject message forwarding module is further configured to send the second reject message to the terminal device, so as to indicate that the terminal device is not subscribed to the network status analysis service.

Optionally, the initiating request further includes: providing a report period of network status information, wherein the analysis result forwarding module comprises:

an analysis result receiving unit, configured to receive the at least one network state analysis result periodically sent by the NWDAF according to the reporting period;

and the analysis result sending unit is used for forwarding the network state analysis result to the terminal equipment so that the terminal equipment can determine the available network resources of the terminal equipment at regular time according to the network state information in the at least one network state analysis result.

In a fourth aspect, an embodiment of the present application further provides a network status information obtaining apparatus, which is applied to a network data analysis function NWDAF, where the apparatus includes:

an analysis subscription request receiving module, configured to receive an analysis subscription request sent by an access and mobility management function AMF, where the analysis subscription request includes: at least one analysis identifier, where the analysis identifier is an identifier of at least one network status analysis service determined by the UDM according to a reason for a requirement that the terminal device acquires network status information when the UDM determines that a core network has a network status analysis function after the AMF sends an analysis identifier acquisition request to a universal data management UDM in response to an initiation request sent by the terminal device, and the initiation request and the analysis identifier acquisition request both include: the reason for the demand;

the network state analysis module is used for analyzing the network state according to the analysis identifier to obtain at least one network state analysis result;

an analysis result sending module, configured to send the at least one network state analysis result to the AMF, so that the AMF forwards the at least one network state analysis result to the terminal device, and the terminal device determines, according to network state information in the at least one network state analysis result, available network resources of the terminal device.

Optionally, the analyzing the subscription request further includes: for the reason of the requirement, the device further comprises:

a confirmation message sending module, configured to send a user permission information confirmation message to the UDM, so that the UDM determines, according to the requirement reason, whether the terminal device subscribes to the network status analysis service in advance;

the network state analysis module is specifically configured to, if it is determined that the terminal device subscribes to the network state analysis service in advance, perform network state analysis according to the analysis identifier to obtain at least one network state analysis result.

Optionally, the apparatus further comprises:

a reject message sending module, configured to send, to the AMF, a reject message corresponding to the analysis subscription request if it is determined that the terminal device has not subscribed to the network state analysis service in advance, so that the AMF sends the reject message to the terminal device.

Optionally, the analyzing the subscription request further includes: and the analysis result sending module is further configured to send the at least one network state analysis result to the AMF at regular time according to the report period, so that the AMF forwards the at least one network state analysis result to the terminal device at regular time, and the terminal device determines available network resources of the terminal device at regular time according to the network state information in the at least one network state analysis result.

In a fifth aspect, an embodiment of the present application further provides a network status information acquiring device, including:

a transceiver, a processor, and a storage medium;

the transceiver is used for receiving and transmitting data;

the storage medium stores program instructions executable by the processor;

the processor is configured to call the program instructions stored in the storage medium to perform the steps of the network status information acquisition method according to any one of the first aspect, or to perform the steps of the network status information acquisition method according to any one of the second aspect.

In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by a processor, the method for acquiring network status information according to any one of the first aspect or the method for acquiring network status information according to any one of the second aspect is executed.

The beneficial effect of this application is:

according to the network state information obtaining method and device, an analysis identifier obtaining request is sent to a user data management module (UDM) according to an initiating request sent by a terminal device, a requirement reason for obtaining network state information is carried in the request, so that the UDM determines an analysis identifier of at least one network state analysis service corresponding to the requirement reason according to the requirement reason for obtaining the network state information, network state analysis is carried out by a network data discovery and discovery protocol (NWDAF) according to the analysis identifier, at least one network state analysis result is forwarded to the terminal device by an Advanced Metering Framework (AMF), the terminal device determines available network resources of the terminal device according to the network state information in the at least one network state analysis result, all required network state information can be obtained without multiple signaling transmission between the terminal device and a core network, and network load is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic diagram of a network status information acquiring system according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a method for acquiring network status information according to an embodiment of the present disclosure;

fig. 3 is a schematic flowchart of another network status information obtaining method according to an embodiment of the present application;

fig. 4 is an interaction flowchart for obtaining an analysis identifier according to an embodiment of the present application;

fig. 5 is a schematic flowchart of another network status information acquisition method according to an embodiment of the present application;

fig. 6 is a schematic flowchart of another network status information obtaining method according to an embodiment of the present application;

fig. 7 is a schematic flowchart of yet another network status information acquisition method according to an embodiment of the present application;

fig. 8 is an interaction diagram of a network status information obtaining method according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a network status information obtaining apparatus according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another network status information acquiring apparatus according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a network status information acquiring device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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.

In the description of the present application, it should be noted that if the terms "upper", "lower", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually arranged when the product of the application is used, the description is only for convenience of describing the application and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and operation, and thus, cannot be understood as the limitation of the application.

Furthermore, the terms "first," "second," and the like in the description and in the claims, as well as in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

Machine Learning (ML) and Artificial Intelligence (AI) can enable a computer to learn rules hidden by the computer from mass data, but in practical application, the computer is constrained by data security and confidentiality, and the Machine Learning and the Artificial Intelligence cannot acquire enough data to learn.

For the terminal equipment, the artificial intelligence or machine learning application in the terminal equipment trains the model by using local data, then the weight of the local model is uploaded to the central server, the central server performs combined training on the model according to the weight uploaded by each terminal equipment to obtain the optimal parameter of the model, and then the terminal equipment downloads the model from the central server to complete the local machine learning operation.

Based on the problems existing in the prior art, the present application is intended to provide a method and a device for acquiring network state information, where a request is initiated to an access and mobility management function AMF in a core network, and the request carries a requirement reason for acquiring the network state information, so that the AMF requests a universal data management UDM to determine an analysis identifier of at least one network state analysis service corresponding to the requirement reason according to the requirement reason for acquiring the network state information, and a network data analysis function NWDAF performs network state analysis according to the analysis identifier, and forwards at least one network state analysis result to a terminal device from the AMF, so that the terminal device determines available network resources of the terminal device according to the network state information in the at least one network state analysis result, thereby achieving that all required network state information can be acquired without performing multiple signaling transmission between the terminal device and the core network, and reducing network burden.

Referring to fig. 1, a schematic diagram of a network status information acquiring system according to an embodiment of the present application is shown in fig. 1, where the network status information acquiring system includes:

1. a terminal Equipment (UE) may also be referred to as a User Equipment, terminal, access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User device.

2. An Access and Mobility Management Function (AMF) is mainly used for Mobility Management, access Management, and the like, and may be used for implementing other functions, such as functions of lawful interception, access authorization (or authentication), and the like, in an MME Function, besides session Management.

3. The Unified Data Management (UDM) stores static subscription information and registered dynamic information of a user, such as an AMF currently accessed by the user, an authentication state or a registration state of the user, and the like.

4. A Network Data analysis Function NWDAF (Network Data analysis Function) is a newly introduced Network element in a 5G core Network, and is specially used for automatically calculating and analyzing mass Data in the 5G Network to obtain an analysis report, so that the 5G Network can realize automatic management and enterprise decision.

It should be understood that the network architecture applied to the embodiments of the present application is only an exemplary network architecture described in terms of a conventional point-to-point architecture and a service architecture, and the network architecture to which the embodiments of the present application are applied is not limited thereto, and any network architecture capable of implementing the functions of the network elements described above is applicable to the embodiments of the present application. It should be understood that the above network elements may communicate with each other through a preset interface, which is not described herein again. It should also be understood that these core network elements may be independent computer devices or servers, or may be integrated in the same computer device or server to implement different functions, which is not limited in this application.

On the basis of the network state information acquisition system, the embodiment of the application also provides a network state information acquisition method, which is applied to the AMF in the network state information acquisition system. Referring to fig. 2, a schematic flow chart of a method for acquiring network status information according to an embodiment of the present application is shown, where as shown in fig. 2, the method may include:

s11: responding to an initiating request sent by terminal equipment, and sending an analysis identifier acquisition request to the UDM, wherein the initiating request and the analysis identifier acquisition request both comprise: the terminal equipment acquires the requirement reason of the network state information, so that the UDM determines the analysis identifier of at least one corresponding network state analysis service according to the requirement reason when determining that the core network has the network state analysis function.

In this embodiment, the initiation request is a request for acquiring network state information sent by the terminal device to the AMF, and the initiation request includes: the terminal equipment acquires the requirement reason of the network state information, and the requirement reason is used for indicating the purpose of acquiring the network state information by the terminal equipment.

After receiving an initiation request sent by a terminal device, an AMF determines that the terminal device needs to acquire network state information from a core network, and sends an analysis identifier acquisition request to a UDM according to the initiation request received from the terminal device, wherein the analysis identifier acquisition request comprises: and the terminal equipment acquires the requirement reason of the network state information.

In a possible implementation manner, the initiation request sent by the terminal device may be a network state information acquisition request sent by the terminal device before the terminal device determines that the local model training is completed and needs to send the local model and the parameters to the central server; or, the registration request may be initiated when the terminal device registers to the core network, and the requirement reason for acquiring the network state information by the terminal device is directly carried in the registration request.

Illustratively, the registration request sent by the terminal device includes a Network Association Info cell, where the Network Association Info cell carries a reason for the terminal device to acquire the Network state information. After receiving a Network Association information cell sent by a terminal device, an AMF determines that the terminal device needs to acquire Network state information from a core Network, the AMF sends an analysis identifier acquisition request to a UDM according to the Network Association information cell received from the terminal device, and the UDM determines the identifier of at least one corresponding Network state analysis service according to the reason for the terminal device to acquire the Network state information.

After receiving the analysis identifier acquisition request, the UDM will first check network consent information of the core network, where the network consent information includes: the method comprises the steps that whether a core network supports a network state analysis function or not and under the condition that the core network supports the network state analysis function, at least one network state analysis service which can be provided by the core network corresponds to multiple network agreement purposes, the network agreement purposes are used for indicating the reasons of network state analysis service agreement of the core network, terminal equipment corresponding to each network agreement purpose obtains one reason of network state information, each network agreement purpose corresponds to at least one network state analysis service, and the UDM determines the identification of the at least one network state analysis service corresponding to the network agreement purpose according to the network agreement purpose corresponding to the requirement reason of the terminal equipment for obtaining the network state information.

In a possible implementation manner, please refer to fig. 3, which is a schematic flow diagram of another network status information obtaining method provided in an embodiment of the present application, as shown in fig. 3, after the S11 sends an analysis identifier obtaining request to the UDM, the method may further include:

s111: and receiving a first rejection message sent by the UDM after the core network is determined not to have the network state analysis function.

S112: and sending a first rejection message to the terminal equipment to indicate that the core network cannot provide a network state analysis function for the terminal equipment.

In this embodiment, if the UDM determines that the core network does not support the network status analysis function after receiving the analysis identifier acquisition request, the UDM sends a first rejection message to the AMF, and the AMF forwards the first rejection message to the terminal device, so as to indicate to the terminal device that the core network does not have the network status analysis function, and cannot provide the network status analysis service for the terminal device.

Exemplarily, the analysis identifier obtaining request sent by the AMF to the UDM is a GET request that is predefined and carries a reason for the terminal device to obtain the Network status information, where the GET request is used by the UDM to check Network grant information (Network grant) of the core Network according to the GET request, and table 1 is related information of the Network grant information provided in this embodiment, and as shown in table 1, the related information of the Network grant information includes: the resource name of the network consent information in the UDM, a uniform resource identifier for acquiring the network consent information, an acquisition mode of the network consent information, and description information of the network consent information.

TABLE 1 information related to network consent information

The query parameters of the uniform resource identifier supported by the GET request include: table 2 shows, for example, information about query parameters of uniform resource identifiers supported by the GET request provided in this embodiment.

Table 2 related information of query parameters of uniform resource identifiers supported by GET request

Table 3 shows specific contents of whether the network communication information provided in this embodiment supports the network status analysis function, and as shown in table 3, the contents include: supported and not supported.

For example, please refer to fig. 4, which is an interaction flowchart for acquiring an analysis identifier provided in an embodiment of the present application, and as shown in fig. 4, a process of acquiring an analysis identifier includes:

s10: and the AMF sends a GET request to the UDM, wherein the uniform resource identifier for acquiring the analysis identifier in the GET request is/{ sui }/nc-data.

S20a: the UDM determines that the core network supports the network state analysis function, and responds a '200 OK' message to the AMF, wherein the message carries network agreement subscription data NcSubscriptionData, namely an analysis identifier.

S20b: the UDM determines that the core network does not support the network status analysis function, and returns an HTTP status code indicating an error to the AMF, for example: 404Not Found, and carries additional error information in the response to the GET request to indicate that the cause of the error is that the core network does Not support the network status analysis function.

In some embodiments, table 4 is a corresponding relationship between a network consent type (ncpure type) and a network status analysis service described in the UDM, and as shown in table 4, the reason for the terminal device to acquire the network status information may be: the Description contents (descriptions) of a plurality of network state analysis services corresponding to the AI/ML Model Transfer include: user data congestion analysis services, network function loading information analysis services, network performance analysis services, quality of service sustainability analysis services, session management congestion control experience analysis services, redundant transport experience analysis services, and the like.

Table 4 correspondence between network agreement destination types and network status analysis services described in UDM

S12: and receiving the analysis identification sent by the UDM.

In this embodiment, after determining at least one corresponding network status analysis service according to the reason for the requirement for acquiring the network status information by the terminal device, the UDM determines a unique analysis identifier for each network status analysis service, and sends the analysis identifier to the AMF.

S13: sending an analysis subscription request to the NWDAF, wherein the analysis subscription request comprises: and analyzing the identifier to enable the NWDAF to analyze the network state according to the analysis identifier to obtain at least one network state analysis result.

In this embodiment, after receiving the analysis identifier sent by the UDM, the AMF sends an analysis subscription request to the NWDAF, where the analysis subscription request includes: analyzing the identifiers, and after receiving the analysis subscription request, the NWDAF executes corresponding network state analysis services according to each analysis identifier, so as to realize network state analysis corresponding to each analysis identifier, and obtain at least one network state analysis result, where each network state analysis result includes corresponding network state information.

S14: and receiving the network state analysis result sent by the NWDAF and forwarding the network state analysis result to the terminal equipment, so that the terminal equipment determines the available network resources of the terminal equipment according to the network state information in at least one network state analysis result.

In this embodiment, after analyzing at least one network status analysis result, the NWDAF packages the at least one network status analysis result and sends the packaged network status analysis result to the AMF in the form of a list, and the AMF sends the list of network status analysis results to the terminal device, where the list includes: the terminal equipment sends the network state analysis result to the local machine learning application, so that the local machine learning application determines available network resources according to the network state information and the network resource use strategy recorded in the network state analysis result, and sends a local model and parameters to the central server by using the network resources or obtains a model after joint training from the central server.

In a possible implementation manner, analyzing the subscription request further includes: the terminal equipment acquires the requirement reason of the network state information; so that the NWDAF sends a user permission information confirmation message to the UDM, the user permission information confirmation message comprising: the UDM determines whether the terminal equipment subscribes to the network state analysis service in advance according to the demand reason;

after determining that the terminal device subscribes to the network state analysis service in advance, the NWDAF performs network state analysis according to the at least one analysis identifier to obtain at least one network state analysis result.

In this embodiment, in the process of registering the terminal device in the core network, the terminal device must subscribe to various network state analysis services according to requirements, so as to indicate to the core network that the terminal device agrees to perform relevant network state analysis. Because the network state analysis services required by different reasons for acquiring the network state information are different, a user can subscribe at least one corresponding network state analysis service for each reason according to various reasons for acquiring the network state information by the terminal device, and after the terminal device is registered in the core network, the UDM can record the network state analysis service subscribed by the terminal device for each reason for acquiring the network state information.

After receiving the analysis subscription request, the NWDAF sends a user permission information confirmation message to the UDM according to a requirement reason included in the analysis subscription request, where the user permission information confirmation message includes: and the UDM determines whether the terminal equipment subscribes to a corresponding network state analysis service for the requirement reason according to the identifier of the terminal equipment and the requirement reason, and sends a confirmation result to the NWDAF, so that the NWDAF performs network state analysis according to the analysis identifier after determining that the terminal equipment subscribes to the network state analysis service in advance according to the confirmation result, and at least one network state analysis result is obtained.

In another possible implementation manner, please refer to fig. 5, which is a flowchart of another network status information obtaining method provided in an embodiment of the present application, as shown in fig. 5, after the S13 sends an analysis subscription request to a network data analysis function NWDAF, if the UDM determines that the terminal device is not subscribed to the network status analysis service, the method further includes:

s131: and receiving a second rejection message sent by the NWDAF after the terminal equipment is determined not to subscribe to the network state analysis service.

S132: and sending a second rejection message to the terminal equipment to indicate that the terminal equipment does not subscribe to the network state analysis service.

In this embodiment, if the NWDAF determines that the terminal device does not subscribe to the network status analysis service according to the confirmation result, the NWDAF sends a second rejection message to the AMF, and the AMF forwards the second rejection message to the terminal device to indicate that the terminal device does not subscribe to the network status analysis service, and if the terminal device still needs to acquire the network status information, the user needs to subscribe to the corresponding network status service for the terminal device.

In the network status information obtaining method provided in the above embodiment, an analysis identifier obtaining request is sent to the UDM according to an initiation request sent by the terminal device, where the request carries a requirement reason for obtaining network status information, so that the UDM determines, according to the requirement reason for obtaining the network status information, an analysis identifier of at least one network status analysis service corresponding to the requirement reason, performs network status analysis according to the analysis identifier by the NWDAF, and forwards at least one network status analysis result to the terminal device by the AMF, so that the terminal device determines, according to the network status information in the at least one network status analysis result, available network resources of the terminal device, and thus, all required network status information can be obtained without performing multiple signaling transmission between the terminal device and the core network, and network load is reduced.

In one possible implementation, initiating the request further includes: providing a reporting period for network status information, the method further comprising: receiving at least one network state analysis result sent by the NWDAF according to the report period in a timing mode; and forwarding the network state analysis result to the terminal equipment so that the terminal equipment determines the available network resources of the terminal equipment at regular time according to the network state information in at least one network state analysis result.

In this embodiment, since the weight of the local model may need to be updated along with the change of data, in order to reduce the number of signaling interactions between the terminal device and the core network, when the terminal device sends an initiation request to the AMF, a report period for providing network state information is carried in the initiation request, where the report period corresponds to an update period of the weight of the local model, and when the AMF sends an analysis subscription request to the NWDAF, the report period is carried in the analysis subscription request, so that the NWDAF performs network state analysis on the terminal device periodically according to the report period, and sends a periodic network state analysis result to the terminal device through the AMF, so that the terminal device sends available network resources of the updated local model and parameters to the center server in a later period of time according to the network state information in the periodic network state analysis result, or obtains available network resources of the model after the joint training from the center server.

In the method for acquiring network state information provided in the foregoing embodiment, by sending the report cycle to the NWDAF, the NWDAF periodically performs network state analysis according to the analysis identifier, and periodically forwards at least one network state analysis result to the terminal device by the AMF, so that the terminal device periodically determines available network resources of the terminal device according to the network state information in the at least one network state analysis result, and the terminal device does not need to initiate a request to the core network each time, thereby achieving that all required network state information can be acquired without performing multiple signaling transmissions between the terminal device and the core network, and reducing network load.

On the basis of the foregoing embodiment, an embodiment of the present application further provides a network status information acquiring method, which is applied to the NWDAF in the network status information acquiring system. Referring to fig. 6, a schematic flow chart of another method for acquiring network status information according to an embodiment of the present application is shown in fig. 6, where the method may include:

s21: receiving an analysis subscription request sent by the AMF, wherein the analysis subscription request comprises: at least one analysis identifier, wherein the analysis identifier is an identifier of at least one network state analysis service determined by the UDM according to a reason for a requirement of the terminal device for acquiring network state information when the UDM determines that the core network has a network state analysis function after the AMF sends an analysis identifier acquisition request to the UDM in response to an initiation request sent by the terminal device, and the initiation request and the analysis identifier acquisition request both include: the reason for the need.

S22: and analyzing the network state according to the analysis identifier to obtain at least one network state analysis result.

S23: and sending at least one network state analysis result to the AMF, so that the AMF forwards the at least one network state analysis result to the terminal equipment, and the terminal equipment determines available network resources of the terminal equipment according to the network state information in the at least one network state analysis result.

In this embodiment, after receiving an initiation request sent by a terminal device, an AMF sends an analysis identifier acquisition request to a UDM to determine an identifier of at least one network state analysis service corresponding to a reason for a requirement for the terminal device to acquire network state information, and sends the analysis identifier to an NWDAF through an analysis subscription request, and the NWDAF executes a corresponding network state analysis service according to each analysis identifier, so as to analyze a network state corresponding to each analysis identifier, obtain at least one network state analysis result, and send the network state analysis result to the terminal device through the AMF in a list form, so that the terminal device determines available network resources of the terminal device according to the network state information in the network state analysis result. The detailed steps of S21 to S23 may be combined with S11 to S14, and are not described herein again.

In a possible implementation manner, please refer to fig. 7, which is a schematic flow chart of yet another network status information obtaining method provided in the embodiment of the present application, and as shown in fig. 7, analyzing a subscription request further includes: for the requirement reason, before the S22 performs the network status analysis according to the analysis identifier to obtain at least one network status analysis result, the method may further include:

s221: and sending a user permission information confirmation message to the UDM so that the UDM determines whether the terminal equipment subscribes to the network state analysis service in advance according to the requirement reason.

S222: and if the terminal equipment is determined to subscribe the network state analysis service in advance, performing network state analysis according to the analysis identifier to obtain at least one network state analysis result.

S223: and if the terminal equipment is determined not to subscribe the network state analysis service in advance, sending a rejection message corresponding to the analysis subscription request to the AMF, so that the AMF sends the rejection message to the terminal equipment.

In this embodiment, after receiving the analysis subscription request, the NWDAF sends a user permission information confirmation message to the UDM according to a requirement reason included in the analysis subscription request, and the UDM determines, according to the identifier of the terminal device and the requirement reason, whether the terminal device subscribes to a corresponding network state analysis service for the requirement reason, and sends a confirmation result to the NWDAF, so that the NWDAF performs network state analysis according to the analysis identifier after determining that the terminal device subscribes to the network state analysis service in advance according to the confirmation result, and obtains at least one network state analysis result.

Further, if the NWDAF determines that the terminal device does not subscribe to the network status analysis service according to the confirmation result, a rejection message is sent to the AMF, the AMF forwards the rejection message to the terminal device to indicate that the terminal device does not subscribe to the network status analysis service, and if the terminal device still needs to acquire the network status information, the user needs to subscribe to the corresponding network status service for the terminal device.

In the method for acquiring network status information provided in the foregoing embodiment, the NWDAF performs network status analysis according to the analysis identifier corresponding to the requirement reason, and forwards at least one network status analysis result to the terminal device by the AMF, so that the terminal device determines available network resources of the terminal device according to the network status information in the at least one network status analysis result, thereby achieving that all required network status information can be acquired without performing multiple signaling transmissions between the terminal device and the core network, and reducing network load.

In a possible implementation manner, analyzing the subscription request further includes: providing a reporting period for network status information, the method may further comprise:

and sending at least one network state analysis result to the AMF at regular time according to the report period, so that the AMF forwards the at least one network state analysis result to the terminal equipment at regular time, and the terminal equipment determines the available network resources of the terminal equipment at regular time according to the network state information in the at least one network state analysis result.

In this embodiment, when the AMF sends an analysis subscription request to the NWDAF, the analysis subscription request carries a report cycle, the NWDAF performs network state analysis on the terminal device periodically according to the report cycle, and sends a periodic network state analysis result to the terminal device through the AMF, so that the terminal device sends an updated available network resource of the local model and the updated available network resource of the parameter to the central server in a later time period according to network state information in the periodic network state analysis result, or obtains an available network resource of the model after the joint training from the central server.

In the network status information acquiring method provided in the above embodiment, the NWDAF periodically performs network status analysis on the terminal device according to the report cycle, and periodically forwards at least one network status analysis result to the terminal device by the AMF, so that the terminal device periodically determines available network resources of the terminal device according to the network status information in the at least one network status analysis result, and the terminal device does not need to initiate a request to the core network each time, thereby achieving that all required network status information can be acquired without performing multiple signaling transmissions between the terminal device and the core network, and reducing network load.

On the basis of the foregoing embodiment, please refer to fig. 8, which is an interaction schematic diagram of a network status information obtaining method provided in the embodiment of the present application, and as shown in fig. 8, an interaction process of the network status information obtaining method includes:

s101: the method comprises the steps that terminal equipment (UE) sends a Registration Request (Registration Request) to an AMF, wherein the Registration Request comprises a Network Association Info cell, the Network Association Info cell carries a requirement reason for the terminal equipment to acquire Network state information, and a report period for providing the Network state information.

S102: AMF inquires Network Consent information (Network consensus) from UDM, wherein the inquiry result comprises: and if the core network supports the network state analysis function, the core network needs to analyze the analysis identifier of the network state analysis service corresponding to the reason.

S103: the AMF sends a Registration Response (Registration Response) to the terminal device to instruct the terminal device to register to the core network.

S104: the AMF initiates an analysis subscription request to the NWDAF, wherein the analysis subscription request comprises the following steps: the identification and the reason for the demand are analyzed.

S105: the NWDAF obtains a User permission information confirmation message (User transmit Check) from the UDM.

S106: and the NWDAF confirms that the terminal equipment subscribes a network state analysis service in advance according to the confirmation result, and performs network state analysis according to the analysis identification to obtain at least one network state analysis result.

S107: and the NWDAF sends a network state analysis result or a rejection message to the AMF, and the rejection message is used for indicating that the terminal equipment is not subscribed to the network state analysis service.

S108: and the AMF sends the network state analysis result or rejection message to the terminal equipment through the N1 message.

S109: and the NWDAF periodically sends the network state analysis result to the terminal equipment according to the report period.

S110: and the terminal equipment sends the network state analysis result to local artificial intelligence or machine learning application (AI/ML Serving) so that the local AI/ML Serving determines available network resources according to the network state information and the network resource use strategy recorded in the network state analysis result, and sends a local model and parameters to the central server by using the network resources or acquires a model after joint training from the central server.

On the basis of the foregoing embodiments, an embodiment of the present application provides a network status information obtaining apparatus, which is applied to an access and mobility management function AMF. Referring to fig. 9, a schematic structural diagram of a network status information obtaining apparatus according to an embodiment of the present application is shown in fig. 9, where the apparatus includes:

an analysis identifier obtaining request sending module 11, configured to send, in response to an initiation request sent by a terminal device, an analysis identifier obtaining request to a universal data management UDM, where the initiation request and the analysis identifier obtaining request both include: the method comprises the steps that terminal equipment acquires a demand reason of network state information, so that when a core network is determined to have a network state analysis function, a UDM determines an analysis identifier of at least one corresponding network state analysis service according to the demand reason;

an analysis identifier receiving module 12, configured to receive an analysis identifier sent by the UDM;

an analysis subscription request sending module 13, configured to send an analysis subscription request to a network data analysis function NWDAF, where the analysis subscription request includes: analyzing the identification so that the NWDAF performs network state analysis according to the analysis identification to obtain at least one network state analysis result;

and the analysis result forwarding module 14 is configured to receive the network state analysis result sent by the NWDAF and forward the network state analysis result to the terminal device, so that the terminal device determines available network resources of the terminal device according to the network state information in the at least one network state analysis result.

Optionally, the analyzing the subscription request further includes: reasons for demand; so that the NWDAF sends a user permission information confirmation message to the UDM, the user permission information confirmation message comprising: the UDM determines whether the terminal equipment subscribes to the network state analysis service in advance according to the demand reason;

after determining that the terminal device subscribes to the network state analysis service in advance, the NWDAF performs network state analysis according to the analysis identifier to obtain at least one network state analysis result.

Optionally, the apparatus further comprises:

the system comprises a rejection message receiving module, a rejection message sending module and a response message sending module, wherein the rejection message receiving module is used for receiving a first rejection message sent by the UDM after the core network is determined not to have a network state analysis function;

and the rejection message forwarding module is used for sending a first rejection message to the terminal equipment so as to indicate that the core network cannot provide a network state analysis function for the terminal equipment.

Optionally, the rejection message receiving module is further configured to receive a second rejection message sent by the NWDAF after determining that the terminal device does not subscribe to the network status analysis service;

and the rejection message forwarding module is further configured to send a second rejection message to the terminal device, so as to indicate that the terminal device does not subscribe to the network state analysis service.

Optionally, the initiating request further includes: providing a reporting period of the network status information, and an analysis result forwarding module 14, including:

an analysis result receiving unit, configured to receive at least one network state analysis result periodically sent by the NWDAF according to the reporting period;

and the analysis result sending unit is used for forwarding the network state analysis result to the terminal equipment so that the terminal equipment can determine the available network resources of the terminal equipment at regular time according to the network state information in at least one network state analysis result.

On the basis of the foregoing embodiments, an embodiment of the present application provides a network status information acquiring apparatus, which is applied to NWDAF. Referring to fig. 10, a schematic structural diagram of another network status information obtaining apparatus provided in an embodiment of the present application is shown in fig. 10, where the apparatus includes:

an analysis subscription request receiving module 21, configured to receive an analysis subscription request sent by an access and mobility management function AMF, where the analysis subscription request includes: at least one analysis identifier, wherein the analysis identifier is an identifier of at least one network state analysis service determined by the UDM according to a reason for a requirement of the terminal device for obtaining network state information when the UDM determines that the core network has a network state analysis function after the AMF sends an analysis identifier obtaining request to the UDM in response to an initiation request sent by the terminal device, and the initiation request and the analysis identifier obtaining request both include: reasons for demand;

a network state analysis module 22, configured to perform network state analysis according to the analysis identifier to obtain at least one network state analysis result;

the analysis result sending module 23 is configured to send at least one network state analysis result to the AMF, so that the AMF forwards the at least one network state analysis result to the terminal device, and the terminal device determines available network resources of the terminal device according to network state information in the at least one network state analysis result.

Optionally, analyzing the subscription request further includes: for reasons of need, the device further comprises:

the system comprises a confirmation message sending module, a network state analysis service module and a user permission information confirmation module, wherein the confirmation message sending module is used for sending a user permission information confirmation message to the UDM so that the UDM can determine whether the terminal equipment subscribes the network state analysis service in advance according to a demand reason;

the network status analysis module 22 is specifically configured to, if it is determined that the terminal device subscribes to the network status analysis service in advance, perform network status analysis according to the analysis identifier to obtain at least one network status analysis result.

Optionally, the apparatus further comprises:

and the rejection message sending module is used for sending a rejection message corresponding to the analysis subscription request to the AMF if the terminal equipment is determined not to subscribe the network state analysis service in advance, so that the AMF sends the rejection message to the terminal equipment.

Optionally, analyzing the subscription request further includes: the analysis result sending module 23 is further configured to send at least one network state analysis result to the AMF at regular time according to the report period, so that the AMF forwards the at least one network state analysis result to the terminal device at regular time, and the terminal device determines available network resources of the terminal device at regular time according to the network state information in the at least one network state analysis result.

The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors, or one or more Field Programmable Gate Arrays (FPGAs), etc. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. As another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

Referring to fig. 11, a schematic structural diagram of a network status information acquiring device according to an embodiment of the present application is shown in fig. 11, where the network status information acquiring device 100 includes: a transceiver 101, a processor 102, and a storage medium 103, the transceiver 101 being configured to receive and transmit data, the storage medium storing program instructions executable by the processor 102, the processor 102 executing the program instructions to perform the steps of the network state information acquisition apparatus method described above as applied to any embodiment of the AMF, or to perform the steps of the network state information acquisition apparatus method described above as applied to any embodiment of the NWDAF. The specific implementation and technical effects are similar, and are not described herein again.

Optionally, the invention also provides a program product, for example a computer-readable storage medium, comprising a program which, when being executed by a processor, is adapted to carry out the above-mentioned method embodiments.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, 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 network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer-readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A network state information acquisition method is applied to an access and mobility management function (AMF), and comprises the following steps:

receiving the analysis identifier sent by the UDM;

sending an analysis subscription request to a network data analysis function (NWDAF), wherein the analysis subscription request comprises: the analysis identifier enables the NWDAF to analyze the network state according to the analysis identifier to obtain at least one network state analysis result;

2. The method of claim 1, wherein analyzing the subscription request further comprises: the reason for the demand; so that the NWDAF sends a user permission information confirmation message to the UDM, the user permission information confirmation message comprising: the demand reason enables the UDM to determine whether the terminal equipment subscribes the network state analysis service in advance according to the demand reason;

3. The method of claim 1, wherein after sending the parse identifier obtain request to the Universal Data Management (UDM), the method further comprises:

4. The method of claim 1, wherein after sending an analytics subscription request to a network data analytics function (NWDAF), the method further comprises:

5. The method of claim 1, wherein the initiating request further comprises: providing a reporting period for network status information, the method further comprising:

6. A network state information acquisition method is applied to a network data analysis function (NWDAF), and comprises the following steps:

7. The method of claim 6, wherein analyzing the subscription request further comprises: the method further includes, before the network state analysis is performed according to the analysis identifier to obtain at least one network state analysis result, for the demand reason:

8. The method of claim 7, wherein after said sending a user permission information confirmation message to the UDM, the method further comprises:

9. The method of claim 6, wherein analyzing the subscription request further comprises: providing a reporting period for network status information, the method further comprising:

10. A network status information acquisition apparatus, characterized by comprising:

a transceiver, a processor, and a storage medium;

the transceiver is used for receiving and transmitting data;

the storage medium stores program instructions executable by the processor;

the processor is configured to invoke the program instructions stored in the storage medium to perform the steps of the network state information acquisition method according to any one of claims 1 to 5, or to perform the steps of the network state information acquisition method according to any one of claims 6 to 9.