CN116939550A

CN116939550A - Network information opening method, device, related equipment and storage medium

Info

Publication number: CN116939550A
Application number: CN202210956211.7A
Authority: CN
Inventors: 郑韶雯; 王丹; 孙滔
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: 2022-03-29
Filing date: 2022-08-10
Publication date: 2023-10-24

Abstract

The application discloses a network information opening method, a network information opening device, a first function, a second function and a storage medium. The method comprises the following steps: the first function receives the first information, determines network information based on the first information, and opens the network information; the first information comprises information about a second function comprising an Application Function (AF) or an Edge Application Server (EAS).

Description

Network information opening method, device, related equipment and storage medium

The present application is based on and claims priority from chinese patent application number 202210323864.1, 29 of 2022, 03 and the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of wireless communications, and in particular, to a method and apparatus for opening network information, related devices, and storage media.

Background

The network information may be used to guide the construction of an optimized end-to-end network, to enable shorter transmission paths, and to facilitate easier management. However, since the network may belong to different operators/vendors/providers, it is generally only possible for the application to view the communication network as a black box, which is disadvantageous for constructing an optimal end-to-end network to meet the needs of the user. For example, for the case where the application function (AF, application Function) reports the data network access identifier (DNAI, data Network Access Identifier) by itself, the AF is generally not aware of the network information, making it difficult to perform optimal DNAI configuration.

Therefore, in order to provide a better user experience for users of a mobile communication network, it is necessary to construct a network that is optimal from the communication network to the application service, which requires a certain degree of network information opening to assist the application service in network configuration based on the network information, thereby constructing an optimal end-to-end network.

However, in the related art, there is no effective solution for how to open network information as needed.

Disclosure of Invention

In order to solve the related technical problems, the embodiment of the application provides a network information opening method, a device, related equipment and a storage medium.

The technical scheme of the embodiment of the application is realized as follows:

the embodiment of the application provides a network information opening method, which is applied to a first function and comprises the following steps:

receiving first information, determining network information based on the first information, the first information comprising information about a second function, the second function comprising an AF or edge application server (EAS, edge Application Server);

and opening the network information.

In the above aspect, the information related to the second function includes at least one of:

address information;

position information;

application information;

Corresponding user information;

network related information.

In the above scheme, the network related information includes at least one of the following:

data network name (DNN, data Network Name);

single network slice selection assistance information (S-nsai, single-Network Slice Selection Assistance Information).

In the above solution, the application information of the second function includes at least one of the following:

provider/owner information of the second function;

the application class of the second function bearer;

identification of the application.

In the above aspect, the address information of the second function includes at least one of:

internet protocol (IP, internet Protocol) address information;

an IP address field;

IP domain information;

fully qualified domain name (FQDN, fully Qualified Domain Name) information.

In the above scheme, the network information includes at least one of the following:

DNAI；

an identifier corresponding to DNAI;

an external identifier corresponding to the DNAI;

user plane function (UPF, user Plane Function) address;

identification of UPF;

an IP domain;

network configuration information corresponding to a user;

the corresponding relation of the public network and the private network IP address information;

private network IP address.

In the above scheme, the method further comprises:

a subscription is received to cause the second function to obtain updated network information.

In the above solution, the determining network information based on the first information includes:

the network information is determined based on the first information and network topology information.

In the above solution, the first function includes a network open function (NEF, network Exposure Function) and/or a policy control function (PCF, policy Control Function), and the method further includes:

and acquiring the network topology information.

In the above solution, the obtaining the network topology information includes:

transmitting second information to the session management function (SMF, session Management Function), the second information being for requesting network topology information, the second information comprising at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

and receiving the network topology information sent by the SMF.

In the above solution, the obtaining the network topology information includes:

transmitting sixth information to the SMF, the sixth information being for subscribing to network topology information, the sixth information comprising at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

Receiving network topology information sent by the SMF,

in the above solution, the obtaining the network topology information includes:

transmitting fourth information to a unified data warehouse function (UDR, unified Data Repository), the fourth information being for requesting or subscribing to network topology information, the fourth information comprising at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

and receiving the network topology information sent by the UDR.

In the above scheme, the receiving the first information includes:

and receiving first information sent by the second function, wherein the first information is used for requesting to open network information related to the second function.

In the above scheme, the method further comprises:

receiving third information sent by the second function, wherein the third information is used for requesting to update or delete the network information;

transmitting third information to the UDR;

receiving a response returned by the UDR;

and returning a response to the second function.

In the above scheme, the method further comprises:

receiving fifth information sent by the second function, wherein the fifth information is used for requesting to search or query the network information;

Transmitting fifth information to the UDR;

receiving a response returned by the UDR;

and returning a response to the second function.

In the above solution, the first function includes SMF, and the receiving the first information includes:

and receiving the first information sent by the NEF and/or the PCF.

In the above scheme, the network topology information includes at least one of the following:

DNAI；

an identifier corresponding to DNAI;

an external identifier corresponding to the DNAI;

a UPF address;

identification of UPF;

an IP domain;

network configuration information corresponding to a user;

private network IP address.

In the above scheme, the method further comprises:

storing the network information to a UDR;

and/or the number of the groups of groups,

and storing the corresponding relation between the related information of the second function and the network information into the UDR.

The embodiment of the application also provides a network information opening method which is applied to the second function and comprises the following steps:

transmitting first information to the NEF, the first information comprising information related to the second function, the second function comprising AF or EAS; the first information is used for requesting to open the network information related to the second function;

and receiving the network information sent by the NEF.

Address information;

position information;

application information;

corresponding user information;

network related information.

DNN；

S-NSSAI。

provider/owner information of the second function;

the application class of the second function bearer;

identification of the application.

IP address information;

an IP address field;

IP domain information;

FQDN information.

DNAI；

an identifier corresponding to DNAI;

an external identifier corresponding to the DNAI;

a UPF address;

identification of UPF;

an IP domain;

network configuration information corresponding to a user;

private network IP address.

In the above scheme, the method further comprises:

and sending a subscription to the NEF to acquire updated network information.

In the above scheme, the method further comprises:

transmitting third information to the NEF, wherein the third information is used for requesting to update or delete the network information;

and receiving a response returned by the NEF.

In the above scheme, the method further comprises:

transmitting fifth information to the NEF, the fifth information being used to request retrieval or query of the network information;

and receiving a response returned by the NEF.

The embodiment of the application also provides a network information opening device, which is arranged at the first function and comprises:

a first processing unit for receiving first information, determining network information based on the first information, the first information comprising information about a second function, the second function comprising AF or EAS;

and the second processing unit is used for opening the network information.

The embodiment of the application also provides a network information opening device, which is arranged at the second function and comprises:

a transmitting unit configured to transmit first information to the NEF, the first information including information related to the second function, the second function including AF or EAS; the first information is used for requesting to open the network information related to the second function;

and the receiving unit is used for receiving the network information sent by the NEF.

The embodiment of the application also provides a first function, which comprises the following steps: a first communication interface and a first processor; wherein,,

the first processor is configured to receive first information through the first communication interface, determine network information based on the first information, where the first information includes information about a second function, and the second function includes AF or EAS;

And opening the network information through the first communication interface.

The embodiment of the application also provides a second function, which comprises the following steps: a second communication interface and a second processor; wherein,,

the second communication interface is configured to:

and receiving the network information sent by the NEF.

The embodiment of the application also provides a first function, which comprises the following steps: a first processor and a first memory for storing a computer program capable of running on the processor,

the first processor is configured to execute any one of the steps of the method on the first function side when running the computer program.

The embodiment of the application also provides a second function, which comprises the following steps: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is configured to execute any one of the steps of the method on the second functional side when running the computer program.

The embodiment of the application also provides a storage medium, on which a computer program is stored, the computer program realizing the steps of any method of the first function side or the steps of any method of the second function side when being executed by a processor.

The network information opening method, the device, the related equipment and the storage medium provided by the embodiment of the application have the advantages that the first function receives the first information, determines the network information based on the first information and opens the network information; the first information includes information about a second function, the second function including AF or EAS. According to the scheme provided by the embodiment of the application, the open network information is determined based on the related information of AF or EAS, so that the network information required by AF or EAS can be determined based on the related information of AF or EAS, and a network operator/manufacturer/provider can open the network information to AF or EAS, thereby helping AF or EAS to perform network configuration based on the network information so as to construct an optimal end-to-end network; meanwhile, the leakage of network information which cannot be opened by a network operator/manufacturer/provider can be avoided.

Drawings

FIG. 1 is a schematic diagram of an edge computing deployment of a Non-dedicated data network (Non-dedicated DN) in the related art;

fig. 2 is a flow chart of a network information opening method according to an embodiment of the present application;

fig. 3 is a flow chart of another network information opening method according to an embodiment of the present application;

FIG. 4 is a diagram of a DNAI mapping scheme according to an embodiment of the application;

FIG. 5 is a schematic diagram of another DNAI mapping scheme according to an embodiment of the application;

FIG. 6 is a flow chart of deleting/updating DNAI mapping according to an embodiment of the application;

fig. 7 is a schematic structural diagram of a network information opening device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another network information opening device according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a first function of an embodiment of the present application;

FIG. 10 is a schematic diagram of a second function of an embodiment of the present application;

fig. 11 is a schematic structural diagram of a network information opening system according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and examples.

Firstly, problems in the related art due to the fact that the open network information is not supported according to the need are described in combination with an exemplary application scenario in which the AF reports DNAI by itself.

In particular, in the case of using edge computing deployment for the fifth generation mobile communication technology (5G) system, when designing an optimal deployment scheme for an edge solution, in order to meet the quality of service requirements of the edge service severity, an optimal transmission path needs to be established, and in addition, modification of an application server (AS, application Server) needs to be considered. For example, as shown in fig. 1, under one data network name (DNN, data Network Name), how to determine the mapping relationship between the optimal DNAI and EAS needs to be considered, so as to ensure the optimal transmission path. For another example, when a service EAS becomes congested or is in a deactivated state, it is necessary to allow another EAS to replace the service EAS to serve a terminal (which may also be referred to as a User Equipment (UE) or a User), i.e. to consider how to handle the modification of the service EAS to maintain the establishment of an optimal transmission path.

Based on this, in the related art, in order to establish the optimal transmission path, the AF needs to deploy an application, and at this time, the AF needs to provide a corresponding DNAI, i.e., the AF reports the DNAI to the 5G core network (5 GC) by itself.

However, DNAIs are 5GC information, in a real network, all DNAIs are created by the network operator/vendor/provider and transmitted to the AF/AS based on offline configuration. There are many cases where the AF cannot understand DNAI information, so there still exist cases where the AF does not provide DNAI information (i.e., does not provide network information, but may only provide an AF ID) resulting in the NEF not configuring the appropriate DNAI, or where it is difficult for the NEF to flexibly update DNAI information when the AF changes its own information (e.g., AS/AF network address or location changes).

As can be seen from the above description, in the related art, since the 5GC does not open network information to the AF according to the needs of the AF, the AF cannot efficiently perform network configuration, such as providing the optimal DNAI inside the request, thereby performing network configuration.

In addition, since the network information contains a business secret of a network operator/vendor/provider, the 5GC cannot open the entire network information to the AF.

Based on this, in various embodiments of the present application, a function of the core network (hereinafter referred to as a first function) determines network information based on related information of AF or EAS (hereinafter referred to as a second function) and opens the network information. Since the open network information is determined based on the related information of the AF or EAS, the first function can determine network information required for the AF or EAS and the network operator/vendor/provider can open to the AF or EAS based on the related information of the AF or EAS, thereby being capable of helping the AF or EAS to perform network configuration based on the network information to construct an optimal end-to-end network; meanwhile, the leakage of network information which cannot be opened by a network operator/manufacturer/provider can be avoided.

The embodiment of the application provides a network information opening method, which is applied to a first function, as shown in fig. 2, and comprises the following steps:

step 201: receiving first information, determining network information based on the first information, wherein the first information comprises related information of a second function, and the second function comprises AF or EAS;

step 202: and opening the network information.

Here, the related information of the second function means information that can be used to determine network information that is required for the second function and that can be opened for the second function; the network information that can be opened for the second function refers to network information that can be opened to the second function by a network operator/vendor/provider.

In an embodiment, the information related to the second function may include at least one of the following:

address information;

position information;

application information;

corresponding user information;

network related information.

In an embodiment, the network related information may include at least one of the following:

DNN；

S-NSSAI。

in practical application, the AF is considered from the perspective of the core network, and from the perspective of application, the AF may be referred to AS; accordingly, the address information of the second function may include address information of AS or EAS, such AS an IP address of EAS, an IP address range (english may be expressed AS range), an IP domain (english may be expressed AS IP domain, which is intranet information allocated to a network (may be understood AS address field information), information that may also be information that serves AS a private network identifier), FQDN information, and the like.

Based on this, in an embodiment, the address information of the second function may include at least one of:

IP address information (may include public network IP address information, or private network IP address information, or both of them);

IP address segments (i.e., IP address ranges);

IP domain information;

FQDN information.

In practical application, the location information of the second function may include location information of AS or EAS, such AS longitude and latitude where EAS is located, information of a block (such AS city, county, tracking area where EAS is located, etc.), etc., which may be specifically set according to the requirement of the second function, which is not limited in the embodiment of the present application.

In actual application, the application information of the second function may include application information of AS or EAS, such AS information of a provider/owner of EAS, application service type, identification (such AS ID) of application, and the like.

Based on this, in an embodiment, the application information of the second function may include at least one of:

provider/owner information of the second function;

the application class (i.e., application service type, which may also be referred to as application type) of the second functional bearer;

Identification of the application.

In practical application, the application category of the second function bearer may be divided according to the service type, for example, divided into video, high definition interaction, vehicle network, cloud game, and the like, which is not limited in the embodiment of the present application.

In practical application, the user information corresponding to the second function may include a general public subscription identifier (GPSI, generic Public Subscription Identifier), a terminal identifier (may also be referred to as a user identifier, for example, a UE ID), etc., which may be specifically set according to the requirement of the second function, which is not limited in the embodiment of the present application.

In practical application, the first function may include one or more core network functions such as NEF, SMF, PCF, and may specifically be set according to requirements (such as a network deployment situation), which is not limited in the embodiment of the present application, so long as the network information opening method of the embodiment of the present application can be implemented.

Wherein, in case the first function comprises a NEF and/or PCF, the first function may receive first information in the process that the second function requests to open network information related to the second function; in other words, the first information may be used to request opening of the second function related network information.

Based on this, in an embodiment, in a case where the first function includes a NEF and/or PCF, the receiving the first information may include:

Here, in various embodiments of the present application, the NEF and/or PCF may receive and transmit information, which means that the NEF may communicate with other network functions directly or through the PCF.

In practical application, in the case that the first function includes an SMF, the second function may send the first information to the NEF and/or the PCF in a process of requesting the NEF and/or the PCF to open network information related to the second function, and then the NEF and/or the PCF send the first information to the first function.

Based on this, in an embodiment, in a case where the first function includes SMF, the receiving the first information may include:

and receiving the first information sent by the NEF and/or the PCF.

In actual application, in step 201, after the first function receives the first information sent by the second function or the NEF and/or PCF, network information may be determined at least based on the first information; in other words, the network information may be determined based on the first information and other information related to the network other than the first information.

Here, in an embodiment, the network information may include at least one of:

DNAI；

an identifier corresponding to DNAI;

an external identifier corresponding to the DNAI;

a UPF address;

an identification (such as an ID) of the UPF;

an IP domain;

network configuration information corresponding to a user;

the corresponding relation between the public network and the private network IP address information (namely, the corresponding relation between the public network IP address information and the private network IP address information);

private network IP address.

The identifier corresponding to DNAI refers to that in the network, one identifier is used to identify DNAI, or may be a correspondence (which may also be understood as a mapping table) between DNAI and AF identifier. Accordingly, the external identifier corresponding to the DNAI refers to, instead of identifying the DNAI by an identifier in the network, identifying the DNAI by an open identifier used outside the network, for example, an open ID, which may be a correspondence (which may also be understood as a mapping table) between the DNAI and an external identifier of the AF.

In practical application, the network configuration information corresponding to the user may include content such as an IP index (english may be expressed as IP index), which may be specifically set according to the requirement of the second function, which is not limited in the embodiment of the present application. In addition, the IP index may indicate that the address allocation manner is a unified data management (UDM, unified Data Management) static allocation, an SMF dynamic allocation, or a dynamic host configuration protocol (DHCP, dynamic Host Configuration Protocol) dynamic allocation.

In practical applications, the other information related to the network besides the first information may at least include network topology information.

Based on this, in an embodiment, the determining network information based on the first information may include:

In practical application, the network topology information may include optional network information corresponding to the second function (for example, DNAI (for example, all DNAI of at least one area corresponding to the second function)) and corresponding network topology (for example, IP address field, coverage area, transmission path, etc.), which may be specifically set according to the requirement of the second function, which is not limited in the embodiment of the present application.

In practical application, the network topology information may also be called a network topology record, etc., and the name of the network topology information is not limited in the embodiment of the present application, so long as the function is implemented.

In an embodiment, the network topology information may include at least one of:

DNAI；

an identifier corresponding to DNAI;

an external identifier corresponding to the DNAI;

a UPF address;

identification of UPF;

an IP domain;

network configuration information corresponding to a user;

The corresponding relation between the public network and the private network IP address information (namely, the corresponding relation between the public network IP address and the private network IP address information);

private network IP address.

In practical application, based on different contents contained in the first information and the network topology information, different types of network information can be determined. Illustratively, the network topology information may be utilized to help determine network information, such as one or a set of DNAIs, that best transmission paths; the location information of the second function may help to determine network information such as one or a set of DNAIs that are closest to the physical location; the application information may further help determine optimal network information, such as DNAI, based on the application policy. The specific type of the network information and the specific manner of determining the network information may be set according to the requirement of the second function, which is not limited by the embodiment of the present application.

Here, in the actual network, the proximity of the location information does not necessarily mean the proximity of the topology, and there is a possibility that the DNAI closest in location may occur, and there is a case where the routing is actually performed. Therefore, according to the address information, the location information, the application information, the corresponding user information and the network related information of the second function, and in combination with the network topology information, the method can help to determine the optimal network information of the second function, such as not only service continuity, but also more effectively help the second function to perform optimal DNAI configuration, such as configuring an optimal transmission path, so as to help the second function to realize the optimization of the user plane path of the current and future protocol data unit (PDU, protocol Data Unit) session.

In practical applications, where the first function includes an SMF, the network topology information may be understood as information known to the first function, i.e. the SMF has a function of generating network topology information.

In practical application, in the case that the first function includes a NEF and/or PCF, the first function needs to acquire the network topology information before determining the network information, and then determine the network information based on the first information and the network topology information.

Based on this, in an embodiment, in case the first function comprises a NEF and/or PCF, the method may further comprise:

and acquiring the network topology information.

In practical applications, the NEF and/or PCF may obtain the network topology information from the SMF, in other words, the NEF may directly obtain the network topology information from the SMF, or may obtain the network topology information from the SMF through the PCF.

Based on this, in an embodiment, the acquiring the network topology information may include:

transmitting second information to the SMF, the second information being for requesting network topology information, the second information may include at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

And receiving the network topology information sent by the SMF.

Here, it should be noted that, specific contents that the address information, the location information, the application information, the corresponding user information, and the network related information of the second function may include are described in detail above, and are not described herein again.

In practical application, the NEF may send the second information to the SMF through the PCF, and receive the network topology information sent by the SMF through the PCF.

In actual application, the NEF and/or PCF may subscribe to the network topology information from the SMF.

and receiving the network topology information sent by the SMF.

In practical application, the NEF may send the sixth information to the SMF through the PCF, and receive the network topology information sent by the SMF through the PCF.

In practical applications, the NEF and/or PCF may also obtain the network topology information from the UDR.

transmitting fourth information to the UDR, the fourth information being for requesting or subscribing to network topology information, the fourth information comprising at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

and receiving the network topology information sent by the UDR.

In step 202, when the network information is actually applied, it may be understood that the second function can obtain the network information from the first function. In particular, in case the first function comprises a NEF and/or PCF, the second function may obtain the network information directly from the first function; in other words, after the first function determines the network information, the network information may be directly transmitted to the second function.

Based on this, in an embodiment, the specific implementation of step 202 may include:

and sending the network information to the second function.

In actual application, in the case that the first function includes SMF, the second function may acquire the network information from the first function through NEF and/or PCF; in other words, after the first function determines the network information, the network information may be sent to a NEF and/or PCF, and the NEF and/or PCF may send the network information to the second function.

and sending the network information to the second function through NEF and/or PCF.

Specifically, the first function sends the network information to the NEF and/or PCF, and after the NEF and/or PCF receives the network information, the network information may be sent to the second function.

In an embodiment, the method may further comprise:

In practical application, in the case that the first function includes a NEF and/or a PCF, the second function may directly send a subscription to the NEF and/or the PCF to obtain updated network information, in other words, when updated network information exists, the NEF and/or the PCF may directly send the updated network information to the second function. In the case where the first function comprises an SMF, the second function may send a subscription to a NEF and/or PCF, the subscription being forwarded to the SMF by the NEF and/or PCF, and when updated network information is present, the SMF may send updated network information to the NEF and/or PCF, which in turn forwards the updated network information to the second function.

Here, the sending subscription refers to a sending subscription message, and correspondingly, the receiving subscription refers to a receiving subscription message. The subscription message may also be referred to as a subscription request, subscription information, etc., and the name of the subscription message is not limited in the embodiment of the present application, so long as the function of the subscription message is implemented.

In the embodiment of the present application, with respect to the subscription to the network information or the subscription to the network topology information, the subscribed information may be a change or update of the network information or the network topology information.

In practical application, after the first function determines the network information, the network information can be synchronized to the UDR for storage.

Based on this, in an embodiment, the method may further include:

storing the network information to a UDR;

and/or the number of the groups of groups,

and storing the corresponding relation between the related information (namely the first information) of the second function and the network information into the UDR.

Here, in the case where the first function includes a NEF and/or PCF, the first function may directly send the network information and/or the correspondence of the related information of the second function and the network information to the UDR. In case the first function comprises an SMF, the first function may store the correspondence between the network information and/or the related information of the second function and the network information to a UDR by a NEF and/or a PCF; in other words, the first function may send the correspondence between the network information and/or the related information of the second function and the network information to the NEF and/or the PCF, and the NEF and/or the PCF store the correspondence between the network information and/or the related information of the second function and the network information to the UDR.

In practical application, the first function may send the first information to the UDR when sending the network information to the UDR. Specifically, the first function may send, to the UDR, a correspondence between the related information of the second function and the network information; accordingly, the UDR may store a correspondence between the related information of the second function and the network information.

In practical application, after the network information is stored in the UDR, the second function may have a need to update or delete the network information.

transmitting third information to the UDR;

receiving a response returned by the UDR;

and returning a response to the second function.

In actual application, the second function may send third information for requesting updating of the network information to the first function in case of configuration update of the second function itself. Illustratively, when the IP address is updated, the second function may send the third information to the first function, which may include the original IP address, the new IP address, and the network information. In addition, it will be appreciated that in the case where the third information is used to request updating of the network information, the response returned by the first function to the second function may contain the result of the updating of the network information, i.e. the response may characterize whether the network information was successfully updated.

In actual application, the second function may send third information for deleting the network information to the first function according to the requirement, for example, when the IP address is updated, the second function may also send third information for deleting the network information to the first function, where the third information may include an original IP address and the network information; accordingly, the response returned by the first function to the second function may contain the deletion result of the network information, i.e. the response may characterize whether the network information was successfully deleted.

When the method is actually applied, after the second function receives a response returned by the first function and the response characterizes that the network information is successfully deleted, the first information can be sent to the first function again, namely new first information is sent to the first function; the first function may open new network information for the second function based on the new first information.

In practical applications, in the case where the UDR stores a correspondence between the related information of the second function and the network information, it can be understood that the third information may be used to request updating or deleting of the correspondence between the related information of the second function and the network information.

In practical application, after the network information and/or the corresponding relation are stored in the UDR, the second function may have a need to retrieve or query the network information.

transmitting fifth information to the UDR;

receiving a response returned by the UDR;

and returning a response to the second function.

In practical application, the specific scenario in which the second function sends the fifth information for requesting to retrieve or query the network information to the first function may be set according to requirements, which is not limited by the embodiment of the present application.

In actual application, the response returned by the first function to the second function may include a search or query result of the network information.

Correspondingly, the embodiment of the application also provides a network information opening method which is applied to the second function, as shown in fig. 3, and the method comprises the following steps:

step 301: transmitting first information to the NEF, the first information comprising information related to the second function, the second function comprising AF or EAS; the first information is used for requesting to open the network information related to the second function;

Step 302: and receiving the network information sent by the NEF.

Wherein, in an embodiment, the method may further comprise:

and sending a subscription to the NEF to acquire updated network information.

In an embodiment, the method may further comprise:

and receiving a response returned by the NEF.

In an embodiment, the method may further comprise:

and receiving a response returned by the NEF.

Here, it should be noted that: the specific processing procedure of the second function is described in detail above, and will not be described herein.

According to the network information opening method provided by the embodiment of the application, the first function receives the first information, determines the network information based on the first information, and opens the network information; the first information includes information about a second function, the second function including AF or EAS. According to the scheme provided by the embodiment of the application, the open network information is determined based on the related information of AF or EAS, so that the network information required by AF or EAS can be determined based on the related information of AF or EAS, and a network operator/manufacturer/provider can open the network information to AF or EAS, thereby helping AF or EAS to perform network configuration based on the network information so as to construct an optimal end-to-end network; meanwhile, the leakage of network information which cannot be opened by a network operator/manufacturer/provider can be avoided.

The present application will be described in further detail with reference to examples of application.

In this application embodiment, in order to solve the problem that the AF (or EAS) does not provide DNAI information, which results in that the NEF does not configure a suitable DNAI, or the AF has difficulty in flexibly updating mapping (english may be expressed as mapping) between the AF and the DNAI in a scene such as DNAI information when the AF changes its own information, flexible mapping between the DNAI and the AF is performed on the network side based on the information provided by the AF (i.e., the first information described above), thereby further helping the AF perform UE-unaware user plane reconfiguration.

Here, the mapping between DNAI and AF refers to configuring DNAI (i.e. the network information described above) for AF; configuring DNAI for AF, which can be understood as allocating AF (English can be expressed as allocation) or selecting DNAI; in other words, mapping, selecting, configuring, and assigning DNAI refer to the same operation.

In the present application embodiment, mapping of DNAI and AF may be performed by SMF (i.e., the first function described above).

Specifically, as shown in fig. 4, the flow of mapping DNAI and AF by the SMF may include the following steps:

step 401: AF initiates a DNAI mapping (also understood as allocation, configuration or selection) request (English may be expressed as DNAI mapping/allocation request), after which step 402 is performed;

Here, the DNAI mapping request carries the first information described above;

step 402: after receiving the request, the NEF/PCF initiates a DNAI information request (english may be expressed as DNAI information request) to the SMF, and then performs step 403;

here, the DNAI information request also carries the first information described above;

step 403: after the SMF receives the request, DNAI mapping (english may be expressed as DNAI mapping/allocation) is performed, and then step 404 is performed;

here, the DNAI mapping refers to mapping (may also be referred to as allocating, configuring or selecting) DNAI (i.e. the above-mentioned network information) for the AF;

step 404: the SMF sends a DNAI information response (english may be expressed as DNAI information response) to the NEF, after which step 405 or step 406 may be performed;

step 405: the NEF informs the UDR of the mapping of the allocated AF IP and DNAI, after which step 406 is performed;

step 406: the NEF informs the AF of the assigned DNAI.

In actual application, in step 401, the DNAI mapping request may be used to request DNAI mapping based on an AS, where the request may carry at least one of an IP address (may be an IP address or an IP address range) of the AF, FQDN, location information (may include latitude and longitude, block information, etc.) of the AF, application information (may include information about an application ID, an application type (i.e. an application type carried by the AF), an application provider, etc.).

In step 402, the DNAI information request may also be used to request an AS-based DNAI mapping, where the request may also carry at least one of an IP address of the AF, a FQDN, location information of the AF, application information, and so on. In addition, discovery of the SMF may be obtained by sending a lookup request to the binding support function (BSF, binding Support Function).

In step 403, the SMF may determine the target DNAI (i.e., the network information) by combining the related information of the AF (i.e., the first information may include at least one of the IP address of the AF, the FQDN, the location information of the AF, the application information, and the like) and the network topology information.

In step 404, the SMF may send suggested DNAI information to the NEF in response to the DNAI information.

In step 405, the NEF may synchronize the mapping relationship of AF IP and DNAI to UDR for storage.

In step 406, the NEF may send DNAI directly to the AF; alternatively, the NEF may convert the DNAI information into DNAI external information (i.e., the external identifier corresponding to DNAI) and send the DNAI external information to the AF; the DNAI external information may be an openable identification (such as an ID) that can characterize the DNAI mapping.

In the present application embodiment, mapping of DNAI and AF may also be performed by NEF (i.e., the first function described above); in other words, the NEF takes DNAI decisions after obtaining network topology information from the SMF.

Specifically, as shown in fig. 5, the procedure of mapping DNAI and AF by NEF may include the following steps:

step 501: AF initiates DNAI mapping request, followed by step 502;

here, the DNAI mapping request carries the first information described above;

step 502: after the NEF/PCF receives the request, it initiates a DNAI search request (english may be expressed as DNAI retrieve request) to the SMF, and then performs step 503;

here, the DNAI retrieval request carries the above-mentioned second information;

step 503: after the SMF receives the request, it performs DNAI search and sends DNAI search response (english may be expressed as DNAI retrieve response) to the NEF, and then step 504 is performed;

here, the DNAI retrieval response carries the above network topology information;

step 504: the NEF performs DNAI mapping, after which step 505 or step 506 may be performed;

step 505: the NEF informs the UDR of the mapping of the allocated AF IP and DNAI, after which step 506 is performed;

step 506: the NEF informs the AF of the assigned DNAI.

In actual application, in step 501, the DNAI mapping request may carry at least one of an IP address of the AF, FQDN, location information of the AF, application information, and the like.

In step 502, the DNAI search request may carry information such as the location of the AF.

In step 503, the SMF may send DNAI of the target area and corresponding network topology information (such as information of IP address field, coverage area, etc.) to the NEF in combination with information of the location of the AF, etc.

In step 504, the NEF may determine one or a set of DNAI in combination with the received network topology information (such as information of IP address field, coverage area, etc.) and at least one of the IP address of the AF, FQDN, location information of the AF, application information, etc.

In step 505, the NEF may synchronize the mapping between AF IP and DNAI to UDR for storage.

In step 506, the NEF may send DNAI directly to the AF; alternatively, the NEF may convert the DNAI information into DNAI external information to be sent to the AF.

In the present application embodiment, deletion or update may be performed for the AS-based DNAI mapping based on the request of AF; in other words, the mapping relationship of the AF IP and DNAI may be deleted or updated according to the requirements of the AF.

Specifically, as shown in fig. 6, the process of deleting/updating DNAI maps may include the steps of:

step 601: AF initiates a DNAI mapping update/delete request (English may be expressed as DNAI mapping/allocation update/delete request), followed by step 602;

here, the update/delete request carries the above-described third information;

Step 602: after receiving the request, the NEF/PCF updates/deletes the mapping of AF IP and DNAI through interaction with UDR, and then performs step 603;

step 603: the NEF/PCF returns an Update/delete result to the AF (i.e., the response returned by the first function to the AF, english may be expressed as Update/delete result).

In actual application, in step 601, for the case of updating the IP address, the update request may carry the original IP address, the new IP address, and the assigned DNAI of the AF; the delete request may carry the original IP address and the assigned DNAI.

In step 602, after receiving the request, the NEF/PCF may send a DNAI mapped update/delete request to the UDR, where the UDR updates/deletes the corresponding storage content, and returns an update/delete result (i.e., the response returned by the UDR to the first function) to the NEF/PCF.

According to the scheme provided by the application embodiment, on one hand, the capability of carrying out optimal DNAI configuration by combining AF related information and network topology information through 5GC can be realized through NEF/PCF opening an 'AS-based DNAI mapping' service. On the other hand, the SMF may provide a "DNAI mapped" service, thereby providing configuration suggestions for the best DNAI. In a third aspect, the SMF may provide a "DNAI information query" service, thereby enabling the provision of DNAI-related network topology information.

In summary, in this application embodiment, the network side may perform flexible mapping between DNAI and AF based on information provided by AF, and provide DNAI information for ensuring an optimal transmission path to AF, where the DNAI information may be used for subsequent establishment of PDU session, so as to further help AF perform UE-unaware user plane reconfiguration; or in the service continuity guarantee, the establishment of the optimal transmission path can be ensured through the DNAI information, so that the service quality of the service is ensured.

In order to implement the method of the first function side in the embodiment of the present application, the embodiment of the present application further provides a network information opening device, which is disposed on the first function, as shown in fig. 7, and the device includes:

a first processing unit 701, configured to receive first information, determine network information based on the first information, where the first information includes information related to a second function, and the second function includes AF or EAS;

and a second processing unit 702, configured to open the network information.

Wherein in an embodiment, the second processing unit 702 is further configured to receive a subscription to enable the second function to obtain updated network information.

In an embodiment, the first processing unit 701 is specifically configured to determine the network information based on the first information and network topology information.

In an embodiment, the first function includes a NEF and/or PCF, and the first processing unit 701 is further configured to obtain the network topology information.

In an embodiment, the first processing unit 701 is further configured to:

transmitting second information to the SMF, the second information being for requesting network topology information, the second information comprising at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

and receiving the network topology information sent by the SMF.

In an embodiment, the first processing unit 701 is further configured to:

and receiving the network topology information sent by the SMF.

In an embodiment, the first processing unit 701 is further configured to:

and receiving the network topology information sent by the UDR.

In an embodiment, the first processing unit 701 is further configured to receive first information sent by the second function, where the first information is used to request to open network information related to the second function.

In an embodiment, the apparatus further comprises a third processing unit for:

transmitting third information to the UDR;

receiving a response returned by the UDR;

and returning a response to the second function.

In an embodiment, the third processing unit is further configured to:

transmitting fifth information to the UDR;

Receiving a response returned by the UDR;

and returning a response to the second function.

In an embodiment, the first function includes an SMF, and the first processing unit 701 is further configured to receive first information sent by the NEF and/or the PCF.

In an embodiment, the third processing unit is further configured to store the network information to a UDR and/or store a correspondence between the related information of the second function and the network information to the UDR.

In practical application, the first processing unit 701, the second processing unit 702, and the third processing unit may be implemented by a processor in the network information opening device in combination with a communication interface.

In order to implement the method of the second function side in the embodiment of the present application, the embodiment of the present application further provides a network information opening device, which is disposed on the second function, as shown in fig. 8, and the device includes:

a transmitting unit 801 configured to transmit first information to the NEF, where the first information includes information about the second function, and the second function includes AF or EAS; the first information is used for requesting to open the network information related to the second function;

a receiving unit 802, configured to receive the network information sent by the NEF.

Wherein in an embodiment, the sending unit 801 is further configured to send a subscription to the NEF to obtain updated network information.

In an embodiment, the sending unit 801 is further configured to send third information to the NEF, where the third information is used to request updating or deleting the network information;

the receiving unit 802 is further configured to receive a response returned by the NEF.

In an embodiment, the sending unit 801 is further configured to send fifth information to the NEF, where the fifth information is used to request to retrieve or query the network information;

In practical applications, the transmitting unit 801 and the receiving unit 802 may be implemented by a communication interface in a network information opening device.

It should be noted that: in the network information opening device provided in the above embodiment, only the division of each program module is used for illustration when opening network information, and in practical application, the processing allocation may be performed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules, so as to complete all or part of the processing described above. In addition, the network information opening device provided in the above embodiment and the network information opening method embodiment belong to the same concept, and specific implementation processes thereof are detailed in the method embodiment and are not repeated here.

Based on the hardware implementation of the program modules, and in order to implement the method of the first function side in the embodiment of the present application, the embodiment of the present application further provides a first function, as shown in fig. 9, where the first function 900 includes:

a first communication interface 901, capable of information interaction with a second function and/or other core network functions;

the first processor 902 is connected to the first communication interface 901, so as to implement information interaction with the second function and/or other core network functions, and is configured to execute, when running a computer program, a method provided by one or more technical solutions on the first function side. And the computer program is stored on the first memory 903.

Specifically, the first processor 902 is configured to:

receiving first information through the first communication interface 901, and determining network information based on the first information, wherein the first information comprises related information of a second function, and the second function comprises AF or EAS;

the network information is opened through the first communication interface 901.

Wherein, in an embodiment, the first processor 902 is further configured to receive a subscription through the first communication interface 901 to enable the second function to obtain updated network information.

In an embodiment, the first processor 902 is specifically configured to determine the network information based on the first information and network topology information.

In an embodiment, the first function 900 includes a NEF and/or PCF, and the first processor 902 is further configured to obtain the network topology information through the first communication interface 901.

In an embodiment, the first processor 902 is further configured to:

transmitting second information to the SMF through the first communication interface 901, the second information being used to request network topology information, the second information including at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

network topology information sent by the SMF is received through the first communication interface 901.

In an embodiment, the first processor 902 is further configured to:

transmitting sixth information to the SMF through the first communication interface 901, the sixth information being used for subscribing to network topology information, the sixth information including at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

In an embodiment, the first processor 902 is further configured to:

transmitting fourth information to the UDR through the first communication interface 901, the fourth information being used for requesting or subscribing to network topology information, the fourth information comprising at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

network topology information sent by the UDR is received through the first communication interface 901.

In an embodiment, the first processor 902 is further configured to receive, through the first communication interface 901, first information sent by the second function, where the first information is used to request to open network information related to the second function.

In an embodiment, the first processor 902 is further configured to:

receiving third information sent by the second function through the first communication interface 901, where the third information is used to request updating or deleting the network information;

transmitting third information to the UDR through the first communication interface 901;

Receiving a response returned by the UDR through the first communication interface 901;

a response is returned to the second function via the first communication interface 901.

In an embodiment, the first processor 902 is further configured to:

receiving fifth information sent by the second function through the first communication interface 901, where the fifth information is used to request to retrieve or query the network information;

transmitting fifth information to the UDR through the first communication interface 901;

In an embodiment, the first function 900 includes an SMF, and the first processor 902 is further configured to receive, through the first communication interface 901, first information sent by the NEF and/or the PCF.

In an embodiment, the first processor 902 is further configured to store the network information to a UDR through the first communication interface 901; and/or storing the corresponding relation between the related information of the second function and the network information to the UDR.

It should be noted that: the specific processing procedure of the first processor 902 and the first communication interface 901 may be understood with reference to the above method.

Of course, in actual practice, the various components in the first function 900 are coupled together by a bus system 904. It is appreciated that the bus system 904 is used to facilitate connected communications between these components. The bus system 904 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration, the various buses are labeled as bus system 904 in fig. 9.

The first memory 903 in the embodiment of the present application is used to store various types of data to support the operation of the first function 900. Examples of such data include: any computer program for operating on the first function 900.

The method disclosed in the above embodiment of the present application may be applied to the first processor 902 or implemented by the first processor 902. The first processor 902 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method may be implemented by an integrated logic circuit of hardware or an instruction in software form in the first processor 902. The first processor 902 may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The first processor 902 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the application can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the first memory 903, and the first processor 902 reads information in the first memory 903, in combination with its hardware, to perform the steps of the method described above.

In an exemplary embodiment, the first function 900 may be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSPs, programmable logic devices (PLD, programmable Logic Device), complex programmable logic devices (CPLD, complex Programmable Logic Device), field-programmable gate arrays (FPGA, field-Programmable Gate Array), general purpose processors, controllers, microcontrollers (MCU, micro Controller Unit), microprocessors (Microprocessor), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program modules, and in order to implement the method of the second function side in the embodiment of the present application, the embodiment of the present application further provides a second function, as shown in fig. 10, where the second function 1000 includes:

a second communication interface 1001 capable of information interaction with the NEF;

and a second processor 1002, connected to the second communication interface 1001, for implementing information interaction with the NEF, for executing the method provided by one or more technical solutions on the second functional side when running a computer program. And the computer program is stored on the second memory 1003.

Specifically, the second communication interface 1001 is configured to:

transmitting first information to the NEF, the first information comprising information about the second function 1000, the second function 1000 comprising AF or EAS; the first information is used for requesting to open the network information related to the second function 1000;

and receiving the network information sent by the NEF.

Wherein in an embodiment, the second communication interface 1001 is further configured to send a subscription to the NEF to obtain updated network information.

In an embodiment, the second communication interface 1001 is further configured to:

and receiving a response returned by the NEF.

It should be noted that: the specific processing procedure of the second communication interface 1001 can be understood with reference to the above method.

Of course, in actual practice, the various components of the second function 1000 would be coupled together by a bus system 1004. It is to be appreciated that the bus system 1004 serves to facilitate connective communication between these components. The bus system 1004 includes a power bus, a control bus, and a status signal bus in addition to the data bus. The various buses are labeled in fig. 10 as bus system 1004 for clarity of illustration.

The second memory 1003 in the embodiment of the present application is used to store various types of data to support the operation of the second function 1000. Examples of such data include: any computer program for operating on the second function 1000.

The method disclosed in the above embodiment of the present application may be applied to the second processor 1002 or implemented by the second processor 1002. The second processor 1002 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method described above may be performed by integrated logic circuits of hardware or instructions in software form in the second processor 1002. The second processor 1002 may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 1002 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the application can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in a second memory 1003, said second processor 1002 reading information in the second memory 1003, performing the steps of the method described above in connection with its hardware.

In an exemplary embodiment, the second function 1000 may be implemented by one or more ASIC, DSP, PLD, CPLD, FPGA, general purpose processors, controllers, MCU, microprocessor, or other electronic elements for performing the foregoing methods.

It is to be understood that the memories (the first memory 903 and the second memory 1003) of the embodiment of the present application may be volatile memory or nonvolatile memory, and may include both volatile and nonvolatile memories. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory described by embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

In order to implement the method provided by the embodiment of the present application, the embodiment of the present application further provides a network information opening system, as shown in fig. 11, where the system includes: a first function 1101 and a second function 1102.

Here, it should be noted that: the specific processing procedures of the first function 1101 and the second function 1102 are described in detail above, and are not repeated here.

In an exemplary embodiment, the present application further provides a storage medium, i.e. a computer storage medium, in particular a computer readable storage medium, for example comprising a first memory 903 storing a computer program executable by the first processor 902 of the first function 900 to perform the steps of the aforementioned first function side method. For example, the second memory 1003 may store a computer program executable by the second processor 1002 of the second function 1000 to perform the steps of the second function side method described above. The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," etc. are used to distinguish similar objects and not necessarily to describe a particular order or sequence.

In addition, the embodiments of the present application may be arbitrarily combined without any collision.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the present application.

Claims

1. A network information opening method, applied to a first function, comprising:

receiving first information, and determining network information based on the first information, wherein the first information comprises related information of a second function, and the second function comprises an application function AF or an edge application server EAS;

and opening the network information.

2. The method of claim 1, wherein the information regarding the second function comprises at least one of:

address information;

position information;

application information;

corresponding user information;

network related information.

3. The method of claim 2, wherein the network-related information comprises at least one of:

a data network name DNN;

the single network slice selects the side information S-nsai.

4. The method of claim 2, wherein the application information of the second function comprises at least one of:

provider/owner information of the second function;

The application class of the second function bearer;

identification of the application.

5. The method of claim 2, wherein the address information of the second function comprises at least one of:

internet protocol, IP, address information;

an IP address field;

IP domain information;

full qualified domain name FQDN information.

6. The method of claim 1, wherein the network information comprises at least one of:

a data network access identifier DNAI;

an identifier corresponding to DNAI;

an external identifier corresponding to the DNAI;

user plane function UPF address;

identification of UPF;

an IP domain;

network configuration information corresponding to a user;

private network IP address.

7. The method according to claim 1, wherein the method further comprises:

8. The method according to any one of claims 1 to 7, wherein the determining network information based on the first information comprises:

9. The method of claim 8, wherein the first function comprises a network opening function, NEF, and/or a policy control function, PCF, the method further comprising:

And acquiring the network topology information.

10. The method of claim 9, wherein the obtaining the network topology information comprises:

transmitting second information to the session management function SMF, the second information being for requesting network topology information, the second information comprising at least one of: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

and receiving the network topology information sent by the SMF.

11. The method of claim 9, wherein the obtaining the network topology information comprises:

and receiving the network topology information sent by the SMF.

12. The method of claim 9, wherein the obtaining the network topology information comprises:

Transmitting fourth information to the unified data warehouse function UDR, wherein the fourth information is used for requesting or subscribing to network topology information, and the fourth information comprises at least one of the following: address information of the second function; position information of the second function; application information of the second function; user information corresponding to the second function; network related information of the second function;

and receiving the network topology information sent by the UDR.

13. The method of claim 9, wherein the receiving the first information comprises:

14. The method according to claim 9, wherein the method further comprises:

transmitting third information to the UDR;

receiving a response returned by the UDR;

and returning a response to the second function.

15. The method according to claim 9, wherein the method further comprises:

Transmitting fifth information to the UDR;

receiving a response returned by the UDR;

and returning a response to the second function.

16. The method of claim 8, wherein the first function comprises SMF, and wherein the receiving the first information comprises:

and receiving the first information sent by the NEF and/or the PCF.

17. The method of claim 8, wherein the network topology information comprises at least one of:

DNAI；

an identifier corresponding to DNAI;

an external identifier corresponding to the DNAI;

a UPF address;

identification of UPF;

an IP domain;

network configuration information corresponding to a user;

private network IP address.

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

storing the network information to a UDR;

and/or the number of the groups of groups,

19. A network information opening method, applied to a second function, comprising:

And receiving the network information sent by the NEF.

20. The method of claim 19, wherein the information regarding the second function comprises at least one of:

address information;

position information;

application information;

corresponding user information;

network related information.

21. The method of claim 20, wherein the network-related information comprises at least one of:

DNN；

S-NSSAI。

22. the method of claim 20, wherein the application information of the second function comprises at least one of:

provider/owner information of the second function;

the application class of the second function bearer;

identification of the application.

23. The method of claim 20, wherein the address information of the second function comprises at least one of:

IP address information;

an IP address field;

IP domain information;

FQDN information.

24. The method of claim 20, wherein the network information comprises at least one of:

DNAI；

an identifier corresponding to DNAI;

an external identifier corresponding to the DNAI;

a UPF address;

identification of UPF;

an IP domain;

network configuration information corresponding to a user;

Private network IP address.

25. The method of claim 19, wherein the method further comprises:

and sending a subscription to the NEF to acquire updated network information.

26. The method according to any one of claims 19 to 25, further comprising:

and receiving a response returned by the NEF.

27. The method according to any one of claims 19 to 25, further comprising:

and receiving a response returned by the NEF.

28. A network information opening device, characterized by being provided in a first function, comprising:

and the second processing unit is used for opening the network information.

29. A network information opening device, characterized by being provided in a second function, comprising:

30. A first function, comprising: a first communication interface and a first processor; wherein,,

and opening the network information through the first communication interface.

31. A second function, comprising: a second communication interface and a second processor; wherein,,

the second communication interface is configured to:

and receiving the network information sent by the NEF.

32. A first function, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is adapted to perform the steps of the method of any of claims 1 to 18 when the computer program is run.

33. A second function, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is adapted to perform the steps of the method of any of claims 19 to 27 when the computer program is run.

34. A storage medium having stored thereon a computer program, which when executed by a processor, performs the steps of the method of any of claims 1 to 18 or performs the steps of the method of any of claims 19 to 27.