CN114650534B

CN114650534B - Addressing and addressing information generation method, device and storage medium

Info

Publication number: CN114650534B
Application number: CN202011503479.2A
Authority: CN
Inventors: 黄震宁; 宋月; 黄晓婷; 魏彬
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2023-08-15
Anticipated expiration: 2040-12-18
Also published as: CN114650534A; WO2022127879A1

Abstract

The invention discloses a method, equipment and medium for generating addressing information, which comprises the following steps: generating addressing information carrying the determined or selected AAnF; sending addressing information carrying AAnF to core network equipment; and the core network equipment determines AAnF according to the addressing information. The invention can solve the problem that AUSF, AF or NEF can not be correctly addressed to AAnF.

Description

Addressing and addressing information generation method, device and storage medium

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, and a storage medium for generating addressing information.

Background

Fig. 1 is a schematic diagram of a 5G architecture 1, fig. 2 is a schematic diagram of a 5G architecture 2,5G, in which a control plane network element and interfaces between network elements are designed in a service manner, and the network architecture is shown in fig. 1 and 2.

Fig. 3 is a schematic diagram of an AKMA architecture, and a system architecture of an AKMA (authentication and key management architecture of an application program, architecture for Authentication and Key Management for Applications) is shown in fig. 3.

The AF (application function ) may directly obtain authentication of the terminal and the application according to authentication information of the network side.

The prior art has the following defects: AUSF, AF or NEF cannot address the correct AAnF.

Disclosure of Invention

The invention provides a method, equipment and a storage medium for generating addressing information, which are used for solving the problem that AUSF, AF or NEF cannot be addressed to correct AAnF.

The invention provides the following technical scheme:

an addressing method, comprising:

the core network equipment receives addressing information carrying the determined or selected AAnF;

and the core network equipment determines or selects AAnF according to the addressing information.

In practice, the addressing information is carried in the a-KID and/or a field indicating the addressing information.

In practice, the addressing information is carried by the terminal or AUSF in the process of generating a-KID.

In practice, the addressing information includes one or a combination of the following information:

the AAnF is in the SUPI range of NRF registration service, the AUSF, AF or NEF configures the SUPI post-four-bit service range of the AAnF service, the AAnF is in the A-KID of NRF registration service, the AAnF is in the A-KID calculated value range of the NRF registration service, the AUSF, AF or NEF configures the A-KID of the AAnF service, the AUSF, AF or NEF configures the A-KID calculated value range of the AAnF service, the AAnF registers the AAnF to provide the service identification, and the AUSF, AF or NEF configures the corresponding relation between the AAnF service and the identification.

In implementation, the addressing information is carried in the suffix of A-KID when AAnF is in the SUPI range of NRF registration service or the SUPI post-four-bit service range of AAnF service is configured by AUSF, AF or NEF, and the AAnF identifier passes through the post-four-bit identifier of SUPI.

In implementation, the addressing information is AAnF in a-KID of NRF registration service, or AAnF in a range of a-KID calculated value of NRF registration service, or AAnF service is configured by AUSF, AF, or NEF, or AAnF conforming to service range is determined according to a-KID or a-KID calculated value when AAnF service is configured by AUSF, AF, or NEF.

In practice, the AAnF meeting the service range is determined according to the A-KID or the A-KID calculated value, and is determined according to the last 4 character strings of the A-KID, or according to the hash value of the A-KID, or according to the last few characters of the A-KID.

In implementation, the addressing information is an identifier of an AAnF service provided by an AAnF registered by an NRF, and when the corresponding relationship between the AAnF service and the identifier is configured by an AUSF, an AF or a NEF, the AAnF conforming to the service range is selected according to the identifier issued to a terminal or the AUSF by a user when registering or the corresponding relationship between the AAnF service and the identifier.

In practice, further comprising:

And acquiring the corresponding relation between the network element domain name registered on the NRF by the AAnF and the AAnF identifier from the NRF, so as to be used for addressing of the AAnF.

A method of generating addressing information, comprising:

determining AAnF;

and sending addressing information carrying the determined or selected AAnF to the core network equipment.

A core network device, comprising:

a processor for reading the program in the memory, performing the following process:

receiving addressing information carrying determined or selected AAnF;

determining or selecting AAnF according to the addressing information;

and a transceiver for receiving and transmitting data under the control of the processor.

In practice, further comprising:

A core network device, comprising:

the core network equipment receiving module is used for receiving addressing information carrying determined or selected AAnF;

and the core network equipment determining module is used for determining or selecting AAnF according to the addressing information.

In an implementation, the core network device receiving module is further configured to receive the addressing information carried in the a-KID and/or a field indicating the addressing information.

In implementation, the core network device receiving module is further configured to receive the addressing information carried by the terminal or the AUSF in the process of generating the a-KID.

In an implementation, the core network device receiving module is further configured to receive the addressing information including one or a combination of the following information:

In an implementation, the core network device determining module is further configured to determine AAnF according to the a-KID or the a-KID calculated value, where AAnF is determined according to the last 4 strings of the a-KID, or according to the hash value of the a-KID, or according to the last few characters of the hash of the a-KID.

In practice, further comprising:

the core network device obtaining module is used for obtaining the corresponding relation between the network element domain name registered on the NRF by the AAnF and the AAnF identifier from the NRF, and is used for addressing by the AAnF.

A communication device, comprising:

determining AAnF;

sending addressing information carrying the determined or selected AAnF to core network equipment;

A communication device, comprising:

A communication device determining module for determining AAnF;

and the communication equipment transmitting module is used for transmitting the addressing information carrying the determined or selected AAnF to the core network equipment.

In practice, further comprising:

and the communication equipment generation module is used for carrying the addressing information in the A-KID and/or a field indicating the addressing information.

In an implementation, the communication device generating module is further configured to carry the addressing information in a process of generating the a-KID in the terminal or the AUSF.

In an implementation, the communication device generation module is further configured to generate the addressing information including one or a combination of the following information:

In an implementation, the communication device generating module is further configured to, when the addressing information is that the AAnF is in a SUPI range of NRF registration service or a SUPI post-four-bit service range of AAnF service configured by AUSF, AF, or NEF, be the addressing information carried in an a-KID suffix, and the AAnF identifier is identified by the post-four-bit of SUPI.

In an implementation, the communication device generating module is further configured to determine, when the addressing information is a-KID of an AAnF registered service or a range of a-KID calculated values of an AAnF registered service by an AUSF, an AF, or a NEF, or a range of a-KID calculated values of an AAnF service configured by an AUSF, an AF, or a NEF, an AAnF conforming to the service range based on the a-KID or a-KID calculated values.

In an implementation, the communication device generating module is further configured to determine AAnF according to the service scope according to the a-KID or the a-KID calculated value, based on the last 4 strings of the a-KID, based on the hash value of the a-KID, or based on the last few characters of the a-KID.

In an implementation, when the addressing information is an identifier of an AAnF service provided by an AAnF registered by an AAnF in an NRF, and the corresponding relationship between the AAnF service and the identifier is configured by an AUSF, an AF, or a NEF, the communication device generating module is further configured to select an AAnF that accords with a service range according to the identifier issued to the terminal or the AUSF by the user when registering or the corresponding relationship between the AAnF service and the identifier.

A computer-readable storage medium storing a computer program that executes an addressing method and/or a generation method of addressing information.

The invention has the following beneficial effects:

in the technical scheme provided by the embodiment of the invention, the AUSF, AF or NEF can not be correctly addressed to the AAnF because the AAnF addressing information is carried.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a schematic diagram 1 of a 5G architecture in the background art;

FIG. 2 is a schematic diagram of a 5G architecture of the prior art 2;

FIG. 3 is a schematic diagram of an AKMA architecture according to the background art;

fig. 4 is a schematic flow chart of an addressing method implementation at a core network device side in an embodiment of the present invention;

FIG. 5 is a flowchart illustrating a method for generating addressing information according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a core network device structure in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention.

Detailed Description

The inventors noted that:

the following describes the AKMA application key generation procedure.

In AKMA, an AKMA application key generation flow for a particular application is as follows.

A. AUSF (authentication service function, authentication Server Function) sends K to AAnF (AKMA Anchor network element, AKMA Anchor Function) _AKMA (AKMA Anchor Key ).

And B-1, when the AF initiates the application, requesting an AF Key (AF Key) from the AAnF. The AF key generation mainly comprises the following steps:

1. the terminal directly interacts application identification (A-KID) with the application server;

2. the AF holds the application server ID (AF ID) and applies the identification (A-KID) to request AKMA key authentication to the network;

3. AAnF utilization K _AKMA An AF key is generated and returned to AF, and the expiration time is returned.

B-2, AF, initiate an application, the AF Key may be requested from AAnF via NEF (network open function, network Exposure Function).

That is, in the current technology, since AF or NEF is not supplemented with a flag for addressing AAnF, the problem that AUSF, AF or NEF addresses the correct AAnF cannot be solved.

Based on this, in the technical solution provided in the embodiment of the present invention, the above problem is solved by adding a hash value or an indication bit representing a user to the a-KID, or adding a negotiation flag between an application and a network, or adopting a calculation scheme for registering the a-KID by AAnF, where the AUSF and the terminal refer to the calculation scheme to generate the a-KID when generating the a-KID, so that when sending a message by AF and NEF, it is convenient to calculate the correct AAnF address according to the algorithm, for example, adding an identifier representing the AAnF address or address field to the a-KID suffix.

The following describes specific embodiments of the present invention with reference to the drawings.

In the description process, the implementation of the core network device and the terminal side, such as AF, AUSF, NEF, AAnF, will be described separately, and then an example of their cooperation implementation will be further given to better understand the implementation of the solution given in the embodiment of the present invention. Such description does not mean that they must be carried out in cooperation or must be carried out separately, in fact, they each solve the problem on their own side when they are carried out separately, while they are used in combination with better technical results.

Fig. 4 is a schematic flow chart of an implementation of an addressing method at a core network device side, and as shown in the drawing, may include:

step 401, core network equipment receives addressing information carrying determined or selected AAnF;

step 402, the core network device determines or selects AAnF according to the addressing information.

Specifically, the core network device determines or selects AAnF for generating the AF key according to the addressing information. The core network device may determine AAnF for generating the AF key in the AKMA key authentication according to the addressing information.

The specific method can be as follows: the NEF will identify the AAnF which genrate the KAF (NEF will recognize AAnF that generates AF keys).

Or is: the NEF will identify the AAnF serve the AF (the NEF will recognize as AAnF for AF services).

The implementation of this scheme will be mainly described in terms of the implementation of AF, NEF.

FIG. 5 is a flow chart illustrating an implementation of a method for generating addressing information, and as shown in the figure, may include:

step 501, determining AAnF;

step 502, generating addressing information carrying determined or selected AAnF;

step 503, sending addressing information carrying the determined or selected AAnF to the core network device.

Specifically, AAnF that generates an AF key may be determined; generating addressing information carrying AAnF for determining to generate AF key; and sending addressing information carrying AAnF for determining to generate the AF key to the core network equipment.

The implementation of this scheme will be mainly described with respect to the implementation of UE (User Equipment) and AUSF.

Specifically, the terminal and the AUSF respectively include AAnF addressing information in the a-KID during the process of generating the a-KID. The addressing information may be used to indicate AAnF or to indicate a group of AAnF. The information can be a description indication in the A-KID, or can be obtained by converting the A-KID through a certain algorithm.

For example: carrying a character string obtained by hashing the last four bits corresponding to a user SUPI (sign-on permanent identifier, subscription Permanent Identifier) in the A-KID; the final two characters generated by the A-KID can be used as the identification of AAnF;

AF. The NEF may then address the AAnF based on the A-KID or other field-stored and/or carried AAnF identification.

Furthermore, the AAnF can register the corresponding relation between the domain name of the network element and the AAnF identifier on the NRF, so as to facilitate addressing of network elements such as AF, NEF and the like. That is, in implementation, the method may further include:

In practice, the addressing information may include one or a combination of the following:

The following description will be given by way of example, respectively.

Example 1

In this example, the addressing information is carried in the suffix of a-KID when AAnF registers the SUPI range of the service in NRF (network storage function, network Repository Function), or the SUPI post-four-bit service range of the AAnF service is configured by AUSF, AF, or NEF, and the AAnF identifier passes the post-four-bit identifier of the SUPI.

Specifically, through the scheme that the A-KID suffix carries the AAnF identifier, the identifier can be realized through the last four bits of SUPI, and the main flow can be as follows:

1. the AAnF is in the SUPI range of the NRF registration service, or AUSF, AF, NEF configures the SUPI post-four-bit service range of the AAnF service;

2. when UE and AUSF generate A-KID, 4 characters are finally supplemented in the A-KID, and the last four digits of SUPI of the terminal are filled;

3. when AUSF selects AAnF, selecting AAnF conforming to the service range according to SUPI;

4. when AF selects AAnF, AAnF is selected according to the last 4 characters of A-KID;

alternatively, when NEF selects AAnF, AAnF is selected based on the last 4 characters of A-KID.

Example 2

In this example, the addressing information is AAnF in a-KID of NRF registration service, or AAnF in a range of a-KID calculated value of NRF registration service, or AAnF service is configured by AUSF, AF, or NEF, or AAnF conforming to a service range is determined according to a-KID or a-KID calculated value when AAnF service is configured by AUSF, AF, or NEF.

In specific implementation, the AAnF conforming to the service range is determined according to the A-KID or the A-KID calculated value, and is determined according to the last 4 character strings of the A-KID, or according to the hash value of the A-KID, or according to the last few characters of the A-KID.

Specifically, the AAnF identification can be calculated by A-KID in a mode of carrying the AAnF identification. The method can be concretely as follows:

1. AAnF is within the range of a-KID and/or a-KID calculations for NRF registration services, or AUSF, AF, NEF configures the range of a-KID and/or a-KID calculations for AAnF services;

2. when the AUSF selects the AAnF, selecting the AAnF which accords with the service scope according to the A-KID and/or the A-KID calculated value (for example, according to the last 4 character strings of the A-KID, or according to the hash of the A-KID, or according to the last few characters of the hash of the A-KID, etc.);

3. when the AF selects the AAnF, the AAnF which accords with the service scope is selected according to the A-KID and/or the A-KID calculated value (for example, according to the last 4 character strings of the A-KID, or according to the hash of the A-KID, or according to the last few characters of the hash of the A-KID, etc.); or alternatively, the process may be performed,

when the NEF selects AAnF, AAnF that meets the service scope is selected based on the A-KID and/or A-KID calculations (e.g., based on the last 4 strings of A-KID, or based on the hash of A-KID, or based on the last few characters of the hash of A-KID, etc.). The discovery of AAnF may be aided by NRF.

Example 3

In this example, the addressing information is an identifier of an AAnF service provided by an AAnF registered by an NRF, and when the corresponding relationship between the AAnF service and the identifier is configured by an AUSF, an AF, or a NEF, the AAnF that accords with the service range is selected according to the identifier issued to the terminal or the AUSF by the user when registering or the corresponding relationship between the AAnF service and the identifier.

Specifically, the AAnF identifier may be carried by other fields, which may be specifically as follows:

1. the AAnF registers an identifier of an AAnF providing service in the NRF, or AUSF, AF, NEF configures a corresponding relationship between the AAnF service and the identifier;

2. the UDM and UDR sign signs are issued to the terminal and AUSF when the user registers;

3. when the AUSF selects the AAnF, selecting the AAnF conforming to the service range according to the identification;

4. when AF selects AAnF, selecting AAnF according to the mark; or alternatively, the process may be performed,

when the NEF selects AAnF, the AAnF is selected according to the identification.

Based on the same inventive concept, the embodiments of the present invention further provide a core network device, a communication device, and a computer readable storage medium, and because the principle of solving the problems of these devices is similar to that of the addressing method and the addressing information generating method, the implementation of these devices may refer to the implementation of the method, and the repetition is omitted.

In implementing the technical scheme provided by the embodiment of the invention, the method can be implemented as follows.

Fig. 6 is a schematic diagram of a core network device, where the device includes:

the processor 600, configured to read the program in the memory 620, performs the following procedures:

receiving addressing information carrying determined or selected AAnF;

determining or selecting AAnF according to the addressing information;

a transceiver 610 for receiving and transmitting data under the control of the processor 600.

In practice, further comprising:

Wherein in fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 600 and various circuits of memory represented by memory 620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 610 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

The embodiment of the invention also provides core network equipment, which comprises:

In practice, further comprising:

For convenience of description, the parts of the above apparatus are described as being functionally divided into various modules or units, respectively. Of course, the functions of each module or unit may be implemented in the same piece or pieces of software or hardware when implementing the present invention.

Fig. 7 is a schematic structural diagram of a communication device, as shown in the figure, including:

the processor 700 is configured to read the program in the memory 720, and execute the following procedures:

Determining AAnF;

generating addressing information carrying determined or selected AAnF;

a transceiver 710 for receiving and transmitting data under the control of the processor 700.

Wherein in fig. 7, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 700 and various circuits of memory represented by memory 720, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 710 may be a number of elements, i.e. comprising a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

The embodiment of the invention also provides a communication device, which comprises:

a communication device determining module for determining AAnF;

the communication equipment generation module is used for generating addressing information carrying the determined or selected AAnF;

There is also provided in an embodiment of the present invention a computer-readable storage medium storing a computer program for executing the addressing method and/or the generation method of the addressing information.

Reference may be made to the implementation of the addressing method and/or the generation method of the addressing information in particular implementations.

In summary, in the technical scheme provided by the embodiment of the invention, in the process of generating A-KID, the terminal and AUSF contain the addressing information of AAnF in the A-KID; the addressing information may be contained in other fields than a-KID. The addressing information may be used to indicate AAnF or to indicate a group of AAnF.

The information may be a descriptive indication of a section of the bearer field (e.g., a-KID), which may be converted by some algorithm through the bearer field (e.g., a-KID).

AF. The NEF performs AAnF addressing based on the AAnF identifications stored and/or carried by the A-KID or other fields.

Furthermore, the AAnF can register the corresponding relation between the domain name of the network element and the AAnF identifier on the NRF, so that network elements such as AF, NEF and the like can be addressed conveniently.

Therefore, the AAnF addressing problem can be solved by adopting the scheme.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. An addressing method, comprising:

the core network equipment receives addressing information carrying an authentication and key management architecture anchoring network element AAnF for determining or selecting an application program;

the core network equipment determines or selects AAnF according to the addressing information;

the addressing information includes one or a combination of the following information:

the SUPI post-four-bit service range of the AAnF service is configured by AUSF, AF or network opening function NEF, the AAnF is in the A-KID of the NRF registration service, the AAnF is in the A-KID calculated value range of the NRF registration service, the A-KID of the AAnF service is configured by AUSF, AF or NEF, the A-KID calculated value range of the AAnF service is configured by AUSF, AF or NEF, the AAnF is registered in the NRF to provide the identification of the service, and the corresponding relation between the AAnF service and the identification is configured by AUSF, AF or NEF.

2. The method of claim 1, wherein the addressing information is carried in an application server interaction application identification a-KID and/or a field indicating addressing information.

3. The method of claim 1, wherein the addressing information is carried by the terminal or an authentication service function AUSF in generating the a-KID.

4. The method of claim 1, wherein the addressing information is a SUPI post-four-bit service scope configured by AUSF, AF, or NEF for AAnF services, carried in an a-KID suffix, with AAnF identification being identified by the post-four bits of SUPI.

5. The method of claim 1, wherein the addressing information is AAnF in a-KID of NRF registration service, or AAnF in a-KID calculated value range of NRF registration service, or a-KID of AAnF service configured by AUSF, AF, or NEF, or a-KID calculated value range of AAnF service configured by AUSF, AF, or NEF, is AAnF conforming to service range determined according to a-KID or a-KID calculated value.

6. The method of claim 5, wherein determining AAnF that meets a service scope based on a-KID or a-KID calculation is based on the last 4 strings of a-KID, or based on a hashed value of a-KID, or based on the last few hashed characters of a-KID.

7. The method of claim 1, wherein the addressing information is an identifier of an AAnF service provided by an AAnF registered by an NRF, and when the corresponding relationship between the AAnF service and the identifier is configured by an AUSF, an AF, or a NEF, the AAnF conforming to the service scope is selected according to the identifier issued to the terminal or the AUSF by the user at the time of registration or the corresponding relationship between the AAnF service and the identifier.

8. The method of any one of claims 1 to 7, further comprising:

9. A method of generating addressing information, comprising:

determining AAnF;

sending addressing information carrying with determined or selected AAnF to core network equipment;

the method comprises the steps of configuring a SUPI post-four-bit service range of an AAnF service by AUSF, AF or NEF, wherein AAnF is in an A-KID of NRF registration service, AAnF is in a A-KID calculated value range of NRF registration service, configuring an A-KID of the AAnF service by AUSF, AF or NEF, configuring an A-KID calculated value range of the AAnF service by AUSF, AF or NEF, providing an identifier of the service by AAnF in NRF registration, and configuring a corresponding relation between the AAnF service and the identifier by AUSF, AF or NEF.

10. The method of claim 9, wherein the addressing information is carried in an a-KID and/or a field indicating addressing information.

11. The method of claim 9, wherein the addressing information is carried by a terminal or AUSF in generating the a-KID.

12. The method of claim 9, wherein the addressing information is a SUPI post-four-bit service scope configured by AUSF, AF, or NEF for AAnF services, carried in an a-KID suffix, with AAnF identification being identified by the post-four bits of SUPI.

13. The method of claim 9, wherein the addressing information is AAnF in a-KID of NRF registration service, or AAnF in a-KID calculated value range of NRF registration service, or a-KID of AAnF service configured by AUSF, AF, or NEF, or a-KID calculated value range of AAnF service configured by AUSF, AF, or NEF, is AAnF conforming to service range determined according to a-KID or a-KID calculated value.

14. The method of claim 13, wherein determining AAnF that meets the service scope based on the a-KID or a-KID calculation is based on the last 4 strings of a-KID, or based on the hash value of a-KID, or based on the last few characters of a-KID that are hashed.

15. The method of claim 9, wherein the addressing information is an identifier of an AAnF service provided by an AAnF registered by an NRF, and when the corresponding relationship between the AAnF service and the identifier is configured by an AUSF, an AF, or a NEF, the AAnF conforming to the service scope is selected according to the identifier issued to the terminal or the AUSF by the user at the time of registration or the corresponding relationship between the AAnF service and the identifier.

16. A core network device, comprising:

Receiving addressing information carrying determined or selected AAnF;

determining AAnF according to the addressing information;

a transceiver for receiving and transmitting data under the control of the processor;

17. A core network device, comprising:

the core network equipment determining module is used for determining AAnF according to the addressing information;

18. A communication device, comprising:

determining AAnF;

19. A communication device, comprising:

a communication device determining module for determining AAnF;

the communication equipment sending module is used for sending addressing information carrying with determined or selected AAnF to the core network equipment;

20. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program for executing the method of any one of claims 1 to 15.