Network element redundancy backup methods, private network NRF, 5GC system and media

Abstract

This disclosure provides a network element redundancy backup method, a private network NRF, a 5GC system, and a storage medium. The method includes: the private network NRF receiving a network element discovery request and forwarding the request to the public network NRF; the private network NRF receiving a first network element discovery response message from the public network NRF carrying public network element information; and the private network NRF generating and returning a second network element discovery response message, which carries private network element information, public network element information, a first priority information of the private network element corresponding to the private network element information, and a second priority information of the public network element corresponding to the public network element information. The method, private network NRF, 5GC system, and storage medium of this disclosure can realize mutual backup functionality between public network elements and private network elements, avoiding the impact of single-party network element failure on the stable operation of the 5GC private network and improving system stability.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a network element redundancy backup method, a private network NRF, a 5GC system, and a storage medium. Background Technology

[0002] In existing 5G networks, some services or industries require mutual backup between public network elements and private network elements. For example, some 5G vertical industries with high reliability requirements need to implement mutual backup between the public network UDM (Unified Data Management) and the private network UDM for the contracted data of private network users. This includes two application scenarios: 1. Deploying a 5GC private network, normally using the public network UDM, and using the backup private network UDM when the link between the private and public networks fails, or when the public network UDM fails, thus ensuring the continued normal operation of the 5G private network; 2. Deploying a 5GC private network, normally using the private network UDM, and using the backup public network UDM when the private network UDM fails, thus ensuring the continued operation of the 5G private network. However, currently there is no solution for how to achieve mutual redundancy backup between public network elements and private network elements. Summary of the Invention

[0003] In view of this, one technical problem to be solved by the present invention is to provide a network element redundancy backup method, a private network NRF, a 5GC system, and a storage medium.

[0004] According to a first aspect of this disclosure, a network element redundancy backup method is provided, comprising: a private network storage function (NRF) deployed in a 5G private network receiving a network element discovery request and forwarding the network element request to a public network NRF deployed in a 5G public network; the private network NRF receiving a first network element discovery response message returned by the public network NRF, carrying public network element information; the private network NRF generating a second network element discovery response message and returning it; wherein the second network element discovery response message carries private network element information and the public network element information, a first priority information of the private network element corresponding to the private network element information, and a second priority information of the public network element corresponding to the public network element information.

[0005] Optionally, the private network storage function (NRF) deployed in the 5G private network receiving the network element discovery request includes: the private network NRF receiving the network element discovery request sent by the private network access and mobility management function (AMF) deployed in the 5G private network; wherein, when the private network AMF receives a registration request sent by a private network user, it sends the network element discovery request to the private network NRF; the private network NRF generating and returning a second network element discovery response message includes: the private network NRF returning the second network element discovery response message to the private network AMF.

[0006] Optionally, the private network NRF sets first priority information and second priority information according to a preset network element backup mode.

[0007] Optionally, if the private network NRF determines that the public network element is the primary device based on the network element backup mode, then the private network NRF sets the first priority to be lower than the second priority.

[0008] Optionally, the first network element discovery response message also carries priority information corresponding to the public network element.

[0009] Optionally, the private network AMF receives the second network element discovery response message and selects the private network element or the public network element to provide corresponding services based on the first priority information and the second priority information.

[0010] Optionally, the private network elements include: private network unified data management / authentication service function UDM / AUSF, private network PCF, and private network SMF; the public network elements include: public network UDM / AUSF, public network PCF, and public network SMF.

[0011] Optionally, the public network UDM / AUSF and the private network UDM / AUSF are used to provide services to the private network. The private network UDM / AUSF is only registered within the private network NRF. The authentication and subscription parameters of the private network users are configured in both the public network UDM / AUSF and the private network UDM / AUSF, and the authentication / subscription parameters of the private network users in the public network UDM / AUSF and the private network UDM / AUSF are kept updated synchronously.

[0012] According to a second aspect of this disclosure, a private network NRF is provided, deployed in a 5G private network, comprising: a discovery request processing module, configured to receive a network element discovery request and forward the network element request to a public network NRF deployed in a 5G public network; a response message receiving module, configured to receive a first network element discovery response message returned by the public network NRF, carrying public network element information; and a response message processing module, configured to generate a second network element discovery response message and return it; wherein the second network element discovery response message carries private network element information and the public network element information, a first priority information of the private network element corresponding to the private network element information, and a second priority information of the public network element corresponding to the public network element information.

[0013] Optionally, the discovery request processing module is specifically used to receive the network element discovery request sent by the private network access and mobility management function (AMF) deployed in the 5G private network; wherein, when the private network AMF receives a registration request sent by a private network user, it sends the network element discovery request to the private network NRF; the response message processing module is specifically used to return the second network element discovery response message to the private network AMF.

[0014] Optionally, the priority setting module is used to set the first priority information and the second priority information according to the preset network element backup mode.

[0015] Optionally, the priority setting module is further configured to set the first priority to be lower than the second priority if the public network element is determined to be the primary device based on the network element backup mode.

[0016] Optionally, the first network element discovery response message also carries priority information corresponding to the public network element.

[0017] Optionally, the private network AMF receives the second network element discovery response message and selects the private network element or the public network element to provide corresponding services based on the first priority information and the second priority information.

[0018] According to a third aspect of this disclosure, a private network NRF is provided, deployed in a 5G private network, comprising: a memory; and a processor coupled to the memory, the processor being configured to perform the method described above based on instructions stored in the memory.

[0019] According to a fourth aspect of this disclosure, a 5GC system is provided, comprising: a 5G public network and a 5G private network; the 5G private network includes the private network NRF as described above.

[0020] Optionally, the private network elements deployed in the 5G private network include: private network unified data management / authentication service function UDM / AUSF, private network PCF, and private network SMF; the public network elements deployed in the 5G public network include: public network UDM / AUSF, public network PCF, and public network SMF.

[0021] Optionally, the public network UDM / AUSF and the private network UDM / AUSF are used to provide services to the private network. The private network UDM / AUSF is only registered within the private network NRF. The authentication and subscription parameters of the private network user are configured in both the public network UDM / AUSF and the private network UDM / AUSF, and the authentication / subscription parameters of the private network user in the public network UDM / AUSF and the private network UDM / AUSF are kept updated synchronously.

[0022] According to a fifth aspect of this disclosure, a computer-readable storage medium is provided that stores computer instructions which, when executed by a processor, perform the method described above.

[0023] This disclosure discloses a network element redundancy backup method, a private network NRF, a 5GC system, and a storage medium. The private network NRF forwards network element requests to the public network NRF, receives a first network element discovery response message from the public network NRF carrying public network element information, and generates and returns a second network element discovery response message. The second network element discovery response message carries private network element information, public network element information, first priority information of the private network element corresponding to the private network element information, and second priority information of the public network element corresponding to the public network element information. This enables mutual backup between public network elements and private network elements, avoiding the impact of single-party network element failure on the stable operation of the 5GC private network. It can improve the stability of system operation, reduce the need for modification of existing systems, and improve the user experience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a flowchart illustrating an embodiment of the network element redundancy backup method according to the present disclosure;

[0026] Figure 2 A flowchart illustrating an embodiment of redundant backup for private network UDM / AUSF and public network UDM / AUSF;

[0027] Figure 3 A flowchart illustrating one embodiment of registering a private network user;

[0028] Figure 4 This is a schematic diagram of a module according to an embodiment of the private network NRF of this disclosure;

[0029] Figure 5 This is a schematic diagram of a module according to another embodiment of the private network NRF according to this disclosure;

[0030] Figure 6 This is a schematic diagram of a module according to yet another embodiment of the private network NRF of this disclosure. Detailed Implementation

[0031] The present disclosure will now be described more fully with reference to the accompanying drawings, which illustrate exemplary embodiments of the present disclosure. The technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative effort are within the scope of protection of the present disclosure.

[0032] The terms "first" and "second" in the following text are used only to describe the differences between them and have no other special meaning.

[0033] Figure 1 This is a flowchart illustrating an embodiment of the network element redundancy backup method according to the present disclosure, as follows: Figure 1 As shown:

[0034] Step 101: The private network NRF (Network Repository Function) deployed in the 5G private network receives the network element discovery request and forwards the network element request to the public network NRF deployed in the 5G public network.

[0035] In one embodiment, the 5G private network is a dedicated 5G network, a type of local area network (LAN). It uses 5G technology to create a dedicated network with unified connectivity, optimized services, and secure communication within a specific area, serving as a mobile communication network specifically for a particular industry or enterprise. The 5G public network can provide services to all industries or enterprises. The 5GC (5G core network) includes both the 5G private network and the 5G public network. In this disclosure, the 5G private network can be a 5GC private network, and the 5G public network can be a 5GC public network. The network element discovery request can be an existing network element discovery request.

[0036] Step 102: The private network NRF receives the first network element discovery response message returned by the public network NRF, which carries the public network element information.

[0037] Step 103: The private network NRF generates and returns a second network element discovery response message. The second network element discovery response message carries private network element information and public network element information, the first priority information of the private network element corresponding to the private network element information, and the second priority information of the public network element corresponding to the public network element information.

[0038] In one embodiment, private network element information includes the attributes, parameters, and access methods of the private network element, while public network element information includes the attributes, parameters, and access methods of the public network element. Private network elements and public network elements can be of various types. For example, private network elements include: Unified Data Management (UDM) / Authentication Server Function (AUSF), Policy Control Function (PCF), and Session Management Function (SMF); public network elements include: Public UDM / AUSF, Public PCF, and Public SMF.

[0039] The network element redundancy backup method disclosed herein addresses the current problem that public network UDM and private network UDM cannot achieve mutual backup. The private network NRF dynamically adds priority private network and public network element information to the network element discovery response message, thereby realizing the mutual backup function between public network elements and private network elements and avoiding the impact of single network element failure on the stable operation of 5GC private network.

[0040] In one embodiment, the private network NRF receives a network element discovery request from the private network access and mobility management function (AMF) deployed in the 5G private network. Specifically, the private network AMF sends a network element discovery request to the private network NRF upon receiving a registration request from a private network user. The private network NRF then returns a second network element discovery response message to the private network AMF.

[0041] The first network element discovery response message also carries priority information corresponding to the public network element. The private network NRF sets the first and second priority information according to the preset network element backup mode. For example, if the private network NRF determines that the public network element is the primary device based on the network element backup mode, the private network NRF sets the first priority to be lower than the second priority.

[0042] The private network AMF receives the second network element discovery response message and selects either a private network element or a public network element to provide the corresponding service based on the first and second priority information. For example, if the first priority is higher than the second priority, the private network AMF will preferentially select the private network element. When the private network element fails, the private network AMF will select the public network element. The following explanation uses the UDM / AUSF as an example to illustrate network element redundancy backup. This also applies to the implementation of mutual backup functions between the public network and other private network elements (such as PCF, SMF, etc.).

[0043] In one embodiment, to address the current issue that public network UDM / AUSF and private network UDM / AUSF cannot achieve mutual backup, the private network NRF first forwards the UDM discovery request to the public network NRF, and then the private network NRF dynamically inserts priority-based private network UDM / AUSF information into the UDM / AUSF discovery response message. This can achieve mutual backup functionality between public network UDM / AUSF and private network UDM / AUSF, avoiding the impact of a single UDM / AUSF failure on the stable operation of the 5GC private network. At the same time, this method does not require any functional modifications to the 5GC public network, reducing the impact on the 5GC public network.

[0044] When the network element is a UDM / AUSF, both the public UDM / AUSF and the private UDM / AUSF are used to provide services to the private network. The private UDM / AUSF is only registered within the private network NRF. Both the public and private UDM / AUSFs are configured with authentication and subscription parameters for private network users, and these parameters are kept synchronized and updated.

[0045] UDM / AUSF is deployed on both the public and private networks to serve private network users, maintaining synchronization of private network users' subscription data between the public and private network UDM / AUSF. The private network NRF sets the priority of the private network UDM / AUSF according to the private network backup mode. When the private network NRF discovers the public network UDM / AUSF, it inserts the private network UDM / AUSF information into the discovery results and returns it to the consumer.

[0046] Figure 2 A flowchart illustrating an embodiment of redundant backup for private network UDM / AUSF and public network UDM / AUSF, as shown below. Figure 2 As shown:

[0047] Step 201: Deploy UDM / AUSF on both the public and private networks to serve private network users. Deploy UDM / AUSF on both the public and private networks to serve private network users. The authentication data and subscription data of private network users are stored simultaneously in both the public and private network UDM / AUSF.

[0048] Step 202: Maintain synchronization of private network user subscription data between the public UDM / AUSF and the private UDM / AUSF. Ensure that private network user subscription data and authentication data remain synchronized between the public UDM / AUSF and the private UDM / AUSF through manual or automatic methods.

[0049] Step 203: The private network UDM / AUSF is only registered on the private network NRF. Since the private network UDM / AUSF is only registered on the private network NRF, there is no need to configure the private network UDM / AUSF information in the public network NRF.

[0050] Step 204: The private network NRF sets the priority of the private network UDM / AUSF according to the private network backup mode.

[0051] For example, if the primary public network UDM / AUSF and the backup private network UDM / AUSF method are used, the private network NRF will set the priority of the public network UDM / AUSF to the highest, i.e., a value of 0; if the primary private network UDM / AUSF and the backup public network UDM method are used, the private network NRF will set the priority of the public network UDM / AUSF to the lowest, i.e., a value of 65535.

[0052] Step 205: Private network NRF discovers public network UDM / AUSF.

[0053] When a private network NRF receives a UDM / AUSF discovery request from a consumer, even if the private network NRF has UDM / AUSF information that can meet the consumer's requirements, the private network NRF must first forward the request to the public network NRF and receive the UDM / AUSF discovery response returned by the public network NRF.

[0054] Step 206: The private network NRF inserts private network UDM / AUSF information into the discovery results and returns it to the consumer.

[0055] The private network NRF inserts private network UDM / AUSF information, including priority, into the UDM / AUSF discovery response message. If necessary, it can also simultaneously modify the priority of the public network UDM / AUSF. For example, if a primary private network UDM / AUSF is used, and the public network UDM / AUSF is already at the highest priority (value 0), then the priority of the primary UDM / AUSF in the response message must first be lowered before returning the discovery response message to the consumer.

[0056] Figure 3 A flowchart illustrating an embodiment of user registration for a private network is shown below. Figure 3 As shown:

[0057] Step 301: Sign up private network users. Configure the authentication and signing parameters for private network users in the public network UDM / AUSF.

[0058] Step 302: Sign up private network users. Configure the authentication and signing parameters for private network users in the private network UDM / AUSF.

[0059] Step 303: Maintain synchronization of private network user authentication / subscription parameters between the public network UDM / AUSF and the private network UDM / AUSF.

[0060] Step 304: The private network UDM registers with the private network NRF. The private network UDM / AUSF registers with the private network NRF, registering information such as the user number ranges supported by the private network UDM / AUSF.

[0061] Step 305: Set the priority of the private network UDM / AUSF. The private network NRF sets the priority of the private network UDM / AUSF according to the current backup mode. If the primary private network UDM / AUSF and backup public network UDM / AUSF mode are used in this process, the priority of the private network UDM / AUSF is set to the highest level, 0.

[0062] Step 306, Registration Request. The private network user initiates a registration request to access the private network AMF.

[0063] Step 307: Send a network element discovery request (request to discover UDM / AUSF). The private network AMF initiates a UDM / AUSF discovery request to the private network NRF.

[0064] Step 308: Forward the network element discovery request (request to discover UDM / AUSF). The private network NRF forwards the request to the public network NRF.

[0065] Step 309: Return network element discovery response (public network UDM / AUSF information). The public network NRF returns a network element discovery response, which carries the required public network UDM / AUSF information.

[0066] Step 310: Insert private network UDM information into the response message. The private network NRF adds the private network UDM / AUSF information, which includes priority, to the network element discovery response message. For example, if the priority of the public network UDM / AUSF in the message is also 0, the priority of the public network element also needs to be lowered, such as changing it to 1.

[0067] Step 311, Network Element Discovery Response (Public UDM / AUSF, Private UDM / AUSF). The private network NRF returns a network element discovery response containing both private network UDM / AUSF and public network UDM / AUSF information to the private network AMF.

[0068] Step 312: Select the highest priority UDM / AUSF. The private network AMF selects the highest priority UDM / AUSF to provide services based on the response message.

[0069] Step 313, complete user registration. Private network users complete the subsequent user registration process.

[0070] In one embodiment, such as Figure 4As shown, this disclosure provides a private network NRF 40 deployed in a 5G private network, including: a discovery request processing module 41, a response message receiving module 42, and a response message processing module 43. The discovery request processing module 41 receives a network element discovery request and forwards the request to the public network NRF deployed in the 5G public network. The response message receiving module 42 receives a first network element discovery response message returned by the public network NRF, carrying public network element information.

[0071] The response message processing module 43 generates a second network element discovery response message and returns it; wherein, the second network element discovery response message carries private network element information and public network element information, the first priority information of the private network element corresponding to the private network element information and the second priority information of the public network element corresponding to the public network element information.

[0072] In one embodiment, the discovery request processing module 41 receives a network element discovery request sent by the Private Network Access and Mobility Management Function (AMF) deployed in the 5G private network; wherein, when the private network AMF receives a registration request sent by a private network user, it sends a network element discovery request to the private network NRF. The response message processing module 43 returns a second network element discovery response message to the private network AMF.

[0073] In one embodiment, such as Figure 5 As shown, the private network NRF40 includes a priority setting module 44. The priority setting module 44 sets first priority information and second priority information according to a preset network element backup mode. The first network element discovery response message also carries priority information corresponding to the public network element. If the priority setting module 44 determines that the public network element is the primary device based on the network element backup mode, it sets the first priority to be lower than the second priority.

[0074] In one embodiment, this disclosure provides a private network NRF deployed in a 5G private network, such as... Figure 6 As shown, the private network NRF may include a memory 61, a processor 62, a communication interface 63, and a bus 64. The memory 61 is used to store instructions, and the processor 62 is coupled to the memory 61. The processor 62 is configured to execute instructions stored in the memory 61 to implement the network element redundancy backup method described above.

[0075] The memory 61 can be a high-speed RAM, non-volatile memory, or a memory array. The memory 61 may also be divided into blocks, and these blocks can be combined into virtual volumes according to certain rules. The processor 62 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the network element redundancy backup method of this disclosure.

[0076] In one embodiment, this disclosure provides a 5GC system including a 5G public network and a 5G private network, wherein the 5G private network includes the private network NRF as described in any of the above embodiments.

[0077] In one embodiment, this disclosure provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the method as described in any of the above embodiments.

[0078] The network element redundancy backup method, private network NRF, 5GC system, and storage medium in the above embodiments involve the private network NRF forwarding network element requests to the public network NRF, receiving a first network element discovery response message from the public network NRF carrying public network element information, and the private network NRF generating and returning a second network element discovery response message. This second network element discovery response message carries private network element information, public network element information, the first priority information of the private network element corresponding to the private network element information, and the second priority information of the public network element corresponding to the public network element information. This enables mutual backup between public and private network elements, preventing the impact of single-party network element failure on the stable operation of the 5GC private network. It also improves system stability, reduces modifications to existing systems, and enhances user experience.

[0079] The methods and systems of this disclosure can be implemented in many ways. For example, they can be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order of steps for the methods is for illustrative purposes only, and the steps of the methods of this disclosure are not limited to the order specifically described above, unless otherwise specifically stated. Furthermore, in some embodiments, this disclosure may also be implemented as a program recorded on a recording medium, the program including machine-readable instructions for implementing the methods according to this disclosure. Thus, this disclosure also covers recording media storing programs for performing the methods according to this disclosure.

[0080] The description in this disclosure is provided for illustrative and descriptive purposes only and is not intended to be exhaustive or to limit the disclosure to its forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of this disclosure and to enable those skilled in the art to understand this disclosure and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A method for network element redundancy backup, comprising: When a private network storage function (NRF) deployed in a 5G private network receives a network element discovery request, it forwards the request to a public network NRF deployed in a 5G public network. The private network NRF receives a first network element discovery response message returned by the public network NRF, which carries public network element information; The private network NRF generates a second network element discovery response message and returns it; wherein, the second network element discovery response message carries private network element information and the public network element information, the first priority information of the private network element corresponding to the private network element information and the second priority information of the public network element corresponding to the public network element information; The private network NRF sets first priority information and second priority information according to a preset network element backup mode; if the private network NRF determines that the public network element is the primary device based on the network element backup mode, the private network NRF sets the first priority to be lower than the second priority.

2. The method as described in claim 1, wherein the network storage function (NRF) deployed in the 5G private network receives the network element discovery request including: The private network NRF receives the network element discovery request sent by the private network access and mobility management function (AMF) deployed in the 5G private network; wherein, when the private network AMF receives a registration request sent by a private network user, it sends the network element discovery request to the private network NRF. The private network NRF generates a second network element discovery response message and returns it, including: The private network NRF returns the second network element discovery response message to the private network AMF.

3. The method as described in claim 1, wherein, The first network element discovery response message also carries priority information corresponding to the public network element.

4. The method of claim 2, further comprising: The private network AMF receives the second network element discovery response message and selects the private network element or the public network element to provide corresponding services based on the first priority information and the second priority information.

5. The method according to any one of claims 1 to 4, wherein, The private network elements include: Private Network Unified Data Management / Authentication Service Function UDM / AUSF, Private Network PCF, and Private Network SMF; the public network elements include: Public Network UDM / AUSF, Public Network PCF, and Public Network SMF.

6. The method of claim 5, wherein, The public network UDM / AUSF and the private network UDM / AUSF are used to provide services to the private network. The private network UDM / AUSF is only registered within the private network NRF. The authentication and subscription parameters for the private network users are configured in both the public network UDM / AUSF and the private network UDM / AUSF, and the authentication / subscription parameters for the private network users in the public network UDM / AUSF and the private network UDM / AUSF are kept updated synchronously.

7. A private network NRF, deployed in a 5G private network, comprising: The discovery request processing module is used to receive network element discovery requests and forward the network element requests to the public network NRF deployed in the 5G public network; The response message receiving module is used to receive the first network element discovery response message returned by the public network NRF, which carries public network element information; The response message processing module is used to generate and return the second network element discovery response message; The second network element discovery response message carries private network element information and public network element information, first priority information of the private network element corresponding to the private network element information, and second priority information of the public network element corresponding to the public network element information. The priority setting module is used to set first priority information and second priority information according to the preset network element backup mode; if the public network element is determined to be the primary device based on the network element backup mode, the first priority is set to be lower than the second priority.

8. The private network NRF as described in claim 7, wherein, The discovery request processing module is specifically used to receive the network element discovery request sent by the private network access and mobility management function (AMF) deployed in the 5G private network; wherein, when the private network AMF receives a registration request sent by a private network user, it sends the network element discovery request to the private network NRF. The response message processing module is specifically used to return the second network element discovery response message to the private network AMF.

9. The private network NRF as described in claim 7, wherein, The first network element discovery response message also carries priority information corresponding to the public network element.

10. The private network NRF as described in claim 7, further comprising: The private network AMF receives the second network element discovery response message and selects the private network element or the public network element to provide corresponding services based on the first priority information and the second priority information.

11. A private network NRF, deployed in a 5G private network, comprising: Memory; And a processor coupled to the memory, the processor being configured to perform the method as described in any one of claims 1 to 6 based on instructions stored in the memory.

12. A 5GC system, comprising: 5G public network and 5G private network; The 5G private network includes: the private network NRF as described in any one of claims 7 to 10.

13. The system of claim 12, wherein, The private network elements deployed in the 5G private network include: Unified Data Management / Authentication Service Function UDM / AUSF, Private Network PCF, and Private Network SMF; the public network elements deployed in the 5G public network include: Public Network UDM / AUSF, Public Network PCF, and Public Network SMF.

14. The system of claim 13, wherein, The public network UDM / AUSF and the private network UDM / AUSF are used to provide services to the private network. The private network UDM / AUSF is only registered within the private network NRF. The authentication and subscription parameters for the private network users are configured in both the public network UDM / AUSF and the private network UDM / AUSF, and the authentication / subscription parameters for the private network users in the public network UDM / AUSF and the private network UDM / AUSF are kept updated synchronously.

15. A computer-readable storage medium storing computer instructions that are executed by a processor according to any one of claims 1 to 6.

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