WO2021204102A1

WO2021204102A1 - Network information exposure method and device

Info

Publication number: WO2021204102A1
Application number: PCT/CN2021/085549
Authority: WO
Inventors: 王丹; 刘超; 孙滔
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2020-04-08
Filing date: 2021-04-06
Publication date: 2021-10-14
Also published as: CN113498215A

Abstract

Embodiments of the present disclosure provide a network information exposure method and device. The method applied to a local NEF comprises: a local NEF obtains identifier information of a first local UPF; the local NEF establishes a first control plane interface with the first local UPF according to the identifier information of the first local UPF; by means of the first control plane interface, the local NEF requests the first local UPF for network exposure information of a PDU session of a first terminal, and sends the network exposure information to a local application function (AF).

Description

Method and equipment for opening network information

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 202010270783.0 filed in China on April 8, 2020, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure relates to the field of mobile communication technology, and in particular to a method and device for opening network information.

Background technique

An architectural view of a fifth-generation mobile communication (5 ^th Generation, 5G) FIG. 1 is a related art system in Figure 1 comprises a plurality of network elements, wherein the open network function (Network Exposure Function, NEF) to apply NE The program interface (Application Program Interface, API) forms a unified external interface to communicate with third-party application functions (Application Function, AF) or operator AF. NEF network elements of related technologies are often deployed in a relatively high position, usually on the core side of the network (for example, deployed on the operator's capability opening platform, which is mostly in the core network computer room). NEF can directly communicate with Policy Control Function (PCF), Session Management Function (SMF), Unified Data Management (UDM), etc., to obtain mobile network information and open it to third parties.

NEF network elements of related technologies are deployed on the core side of the network, resulting in some real-time network data that cannot be opened to edge applications with low latency. These real-time data usually include control plane information and user plane information, such as wireless load conditions, user plane function (UPF) load conditions, session quality of service (QoS) conditions, end-to-end delay, etc., It usually has the characteristics of rapid change.

In addition, even if NEF is deployed at the edge of the network, the wireless information and UPF information that NEF can obtain still needs to pass access and mobility management functions (Access and Mobility Management Function, AMF), SMF and other core network elements to be open to At the edge NEF, because the signaling needs to bypass the core network, the path transmission delay is still very high.

Summary of the invention

At least one embodiment of the present disclosure provides a method, terminal, and network device for opening network information, which simplifies the acquisition of network opening information and reduces the path transmission delay of network opening information.

According to an aspect of the present disclosure, at least one embodiment provides a method for opening network information, applied to a local network opening function NEF, including:

The local NEF obtains the identification information of the first local user plane function UPF;

The local NEF establishes a first control plane interface with the first local UPF according to the identification information of the first local UPF;

The local NEF requests the network opening information of the PDU session of the first terminal from the first local UPF, and sends the network opening information to the local application function AF.

According to another aspect of the present disclosure, at least one embodiment provides a method for sending network information open, applied to a first local UPF, including:

The first local UPF establishes a first control plane interface with the local NEF;

The first local UPF receives the network information opening request for the PDU session of the first terminal sent by the local NEF, and sends the network opening information of the PDU session of the first terminal to the local NEF.

According to another aspect of the present disclosure, at least one embodiment provides a method for sending network information open, applied to a local NEF, including:

The local NEF receives an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal and indication information of network opening information;

The local NEF sends an information opening request for the PDU session of the first terminal to the first PCF, and the information opening request carries the IP address of the first terminal and indication information of network opening information, so that the first PCF can follow the Information open request sends a network information open request to the local SMF;

The local NEF receives the network opening information of the PDU session of the first terminal returned by the local SMF according to the network information opening request, and sends the network opening information to the local AF.

According to another aspect of the present disclosure, at least one embodiment provides a method for sending network opening information, which is applied to a local SMF, including:

The local SMF receives a network information open request sent by the first PCF, where the network information open request carries identification information of the local NEF and indication information of network open information for the PDU session of the first terminal;

The local SMF sends the network opening information of the PDU session of the first terminal to the local NEF according to the network information opening request.

According to another aspect of the present disclosure, at least one embodiment provides a local NEF, including:

An identification acquisition module, configured to acquire identification information of the first local user plane function UPF;

The interface establishment module is configured to establish a first control plane interface with the first local UPF according to the identification information of the first local UPF;

The information sending module is configured to request the network opening information of the PDU session of the first terminal from the first local UPF, and send the network opening information to the local application function AF.

According to another aspect of the present disclosure, at least one embodiment provides a first local UPF, including:

The interface establishment module is used to establish the first control plane interface with the local NEF;

The information sending module is configured to receive the network information opening request for the PDU session of the first terminal sent by the local NEF, and send the network opening information of the PDU session of the first terminal to the local NEF.

The request receiving module is configured to receive an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal;

The request sending module is configured to send an information opening request for the PDU session of the first terminal to the first PCF, where the information opening request carries the IP address of the first terminal and indication information of network opening information, so that the first The PCF sends a network information opening request to the local SMF according to the information opening request;

The information sending module is configured to receive the network opening information of the PDU session of the first terminal returned by the local SMF according to the network information opening request, and send the network opening information to the local AF.

According to another aspect of the present disclosure, at least one embodiment provides a local SMF, including:

The first receiving module is configured to receive a network information open request sent by the first PCF, where the network information open request carries identification information of the local NEF and indication information of network open information for the PDU session of the first terminal;

The first sending module is configured to send the network opening information of the PDU session of the first terminal to the local NEF according to the network information opening request.

According to another aspect of the present disclosure, at least one embodiment provides a local SMF including a transceiver and a processor, wherein,

The transceiver is configured to receive a network information open request sent by a first PCF, where the network information open request carries identification information of the local NEF and network open indication information for the PDU session of the first terminal;

The processor is configured to send the network opening information of the PDU session of the first terminal to the local NEF according to the network information opening request.

According to another aspect of the present disclosure, at least one embodiment provides a local NEF, including: a processor, a memory, and a program stored on the memory and capable of running on the processor, the program being When the processor is executed, the steps of the method for opening network information as described above are realized.

According to another aspect of the present disclosure, at least one embodiment provides a first local UPF, including: a processor, a memory, and a program stored on the memory and capable of running on the processor, the program being When the processor is executed, the steps of the method for opening network information as described above are realized.

According to another aspect of the present disclosure, at least one embodiment provides a local SMF, including: a processor, a memory, and a program stored on the memory and capable of running on the processor, the program being When the processor is executed, the steps of the method for opening network information as described above are realized

According to another aspect of the present disclosure, at least one embodiment provides a computer-readable storage medium with a program stored on the computer-readable storage medium, and when the program is executed by a processor, the above-mentioned method is implemented. step.

Compared with related technologies, the method and device for opening network information provided by the embodiments of the present disclosure collect and open the edge information to edge applications by deploying a network function with open capabilities, such as Local NEF, at the edge of the network. The embodiments of the present disclosure introduce a control plane interface between Local NEF and Local UPF, thereby supporting the opening of edge information from Local UPF to Local NEF. In addition, the embodiment of the present disclosure simplifies the transmission path of the network open information, and reduces the transmission delay of the path of the network open information.

Description of the drawings

By reading the detailed description of the optional embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only used for the purpose of showing alternative embodiments, and are not considered as a limitation to the present disclosure. Also, throughout the drawings, the same reference symbols are used to denote the same components. In the attached picture:

Figure 1 is a schematic diagram of a 5G system architecture in related technologies;

FIG. 2 is a schematic diagram of a local open architecture of the RAN side and network information open in an embodiment of the disclosure;

3 is a schematic diagram of a flow when the method for opening network information according to an embodiment of the disclosure is applied to a local NEF;

4 is a schematic diagram of a flow when the method for opening network information according to an embodiment of the disclosure is applied to the first local UPF;

FIG. 5 is an example diagram of the interaction process between network elements in the method for opening network information provided by the embodiments of the disclosure; FIG.

6 is another example diagram of the interaction process between network elements in the method for opening network information provided by the embodiments of the disclosure;

FIG. 7 is a schematic diagram of another flow when the method for opening network information according to an embodiment of the disclosure is applied to a local NEF;

FIG. 8 is a schematic diagram of a flow when the method for opening network information according to an embodiment of the disclosure is applied to a local SMF;

FIG. 9 is another example diagram of the interaction process between network elements in the method for opening network information provided by the embodiments of the disclosure; FIG.

FIG. 10 is a schematic structural diagram of a local NEF provided by an embodiment of the disclosure;

FIG. 11 is a schematic diagram of another structure of a local NEF provided by an embodiment of the disclosure;

FIG. 12 is a schematic structural diagram of a first local UPF provided by an embodiment of the disclosure;

FIG. 13 is a schematic diagram of another structure of the first local UPF provided by an embodiment of the disclosure;

FIG. 14 is a schematic diagram of another structure of a local NEF provided by an embodiment of the present disclosure;

FIG. 15 is a schematic diagram of still another structure of a local NEF provided by an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of a local SMF provided by an embodiment of the present disclosure;

FIG. 17 is a schematic diagram of another structure of a local SMF provided by an embodiment of the disclosure.

Detailed ways

Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the drawings show exemplary embodiments of the present disclosure, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those clearly listed. Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. In the description and claims, "and/or" means at least one of the connected objects.

The technology described in this article is not limited to the 5G New Radio (NR) system and the Long Time Evolution (LTE)/LTE-Advanced (LTE-A) system, and can also be applied to the subsequent sixth Generation (6 ^th Generation, 6G) or higher level system. The following description describes the 5G NR system for exemplary purposes, and uses 5G NR terminology in most of the description below, although these techniques can also be applied to applications other than NR system applications. In addition, the following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made to the function and arrangement of the discussed elements without departing from the spirit and scope of the present disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

As described in the background art, the steps of obtaining network open information in related technologies are generally complicated, and the path transmission delay of the information is relatively high. In order to solve at least one of the above problems, embodiments of the present disclosure provide a method for opening network information, which can simplify the acquisition of network open information and reduce the path transmission delay of network open information.

In order to realize the opening of network information, such as QoS congestion information and monitoring QoS status (such as air interface QoS status and end-to-end QoS test information), open it to edge applications as soon as possible at the edge of the network, as shown in Figure 2, according to some implementations of the present disclosure For example, in terms of system architecture design, the embodiments of the present disclosure deploy network functions with open capabilities at the edge of the core network, such as local NEF (Local NEF), collect edge information and open it to edge applications (Local AF).

In the embodiments of the present disclosure, Local AF refers to an application deployed in a local edge hosting environment (edge hosting environment). Local NEF refers to the capability opening function deployed locally, and the Local NEF has the ability to open on-demand network information to the Local AF. Local NEF can interoperate with other control plane NFs (such as AMF, SMF, etc.) of the 5G core network, and realize network function discovery and interaction based on the defined Service Based Architecture (SBA) strategy.

Local UPF (Local UPF) deployed at the edge can support local offloading of data plane traffic. The local UPF also supports the opening of specified network information to the Local NEF. A control plane interface is established between Local UPF and Local NEF, which is called Nx in this article (x is a certain designated number).

Specifically, the Nx interface can be implemented in two forms, one is the Service Based Interface (SBI) interface that is consistent with the control plane, and the second is the Packet Forwarding Control Protocol (Packet Forwarding Control) that is consistent with the N4 interface. Protocol, PFCP) protocol interface. The embodiments of the present disclosure do not limit specific interface implementation forms, but similar interface parameters can be used.

For example, when the Nx interface is an SBI interface: UPF needs to be defined to support service-oriented interfaces, and UPF can be defined to support Event exposure services. The Event Exposure service is used to deliver the relevant network information previously subscribed to to the subscribed NF.

For another example, when Nx is a PFCP protocol interface similar to N4: Local NEF first finds the corresponding UPF, Local NEF initiates PFCP association connection establishment to UPF, thereby establishing Nx interface, and supporting UPF information to be opened to Local NEF through Nx interface.

In some embodiments of the present disclosure, the local NEF can establish a control plane interface with a local UPF (Local NEF) deployed at the edge of the core network, and through the control plane interface, network open information can be directly sent from the local UPF to the local NEF.

Referring to FIG. 3, the method for opening network information provided by some embodiments of the present disclosure, when applied to the local NEF side, includes:

Step 31: The local NEF obtains the identification information of the first local UPF.

Here, the identification information of the first local UPF may include one or more of the ID of the first local UPF, a data network access identifier (DN Access Identifier, DNAI), and an address.

Step 32: The local NEF establishes a first control plane interface with the first local UPF according to the identification information of the first local UPF.

Step 33: Through the first control plane interface, the local NEF requests the first local UPF for the network opening information of the protocol data unit (PDU) session of the first terminal, and sends the network opening information Give local AF.

In this article, the network opening information of a terminal PDU session refers to the network status information that can be used for local applications (Local AF) to process the terminal PDU session. Specifically, it may include wireless load, user plane function load, and session QoS. Information such as indicators, end-to-end delay, and terminal location. This information usually has the characteristics of rapid change and needs to be provided to local applications in a low-latency or nearby open manner.

Here, in step 33, the local NEF may send a network information opening request for the PDU session of the first terminal to the first local UPF, and the network information opening request carries at least one of the following information:

Internet Protocol (IP) address and/or application information of the first terminal;

Indication information of network opening information, the network opening information includes one or more of the following information: QoS congestion status notification, QoS policy of QoS flow, UPF load information, air interface delay of designated QoS flow, and, designated QoS End-to-end delay of the flow;

The survival time of the first control plane interface;

Specify the subscription request for network open information.

Through the above steps, the embodiment of the present disclosure establishes a control plane interface between the NEF and UPF deployed locally, and obtains the network opening information of the terminal's PDU session through the above control plane interface and provides it to the local AF. This reduces the transmission of network opening information. The network element that the path passes, therefore, the embodiments of the present disclosure can simplify the acquisition of network open information and reduce the transmission delay of the path of network open information.

After the first control plane interface is established, the embodiment of the present disclosure may also remove the interface as required. For example, when the interface survival time of the first control plane interface expires, the local NEF may also send an interface release request message to the first local UPF, and remove the first control plane interface. The first local UPF receives the interface release request message, and also removes the first control plane interface. For another example, after receiving the interface release request message sent by the first local UPF, the local NEF may remove the first control plane interface according to the request message.

According to some implementation manners of the embodiments of the present disclosure, in the foregoing step 31, obtaining the identification information of the first local UPF may specifically include:

A) The local NEF receives the information opening request for the PDU session of the first terminal sent by the local AF, and the information opening request carries the IP address of the first terminal.

B) The local NEF requests the binding support function (Binding Support Function, BSF) for the address of the first PCF corresponding to the first terminal according to the IP address of the first terminal, and sends the address of the first PCF according to the address of the first PCF. The first PCF sends an information opening request for the PDU session of the first terminal.

C) The local NEF receives the identification information of the first UPF sent by the first PCF.

In the above step 32, when the identification information of the first local UPF includes the address of the first local UPF, the local NEF may directly extract the address of the first UPF from the identification information; the identification information of the second local UPF does not include the first UPF The address of the first local UPF can be obtained according to the ID and/or DNAI of the first local UPF through a local search or a request to a network storage function (Network Repository Function, NRF). Then, the local NEF establishes a first control plane interface with the first local UPF according to the address of the first local UPF.

In the foregoing implementation manner, when the local NEF requests the BSF for the address of the first PCF, it may also subscribe to the SMF through the BSF for the UPF handover notification message of the PDU session of the first terminal. In this way, the local NEF can receive the UPF switching notification message sent by the SMF after the UPF switching occurs in the PDU session of the first terminal. The UPF switching notification message carries the information of the second UPF to which the PDU session of the first terminal is switched. Identification information. Then, the local NEF obtains the address of the second UPF according to the identification information of the second local UPF, and then establishes a second control plane interface with the second local UPF. Then, through the second control plane interface, the local NEF can request the network opening information of the PDU session of the first terminal from the second local UPF, and send the network opening information returned by the second local UPF to Local AF.

Similarly, when the identification information of the second local UPF includes the address of the second UPF, the address of the second UPF can be directly extracted from the identification information; when the identification information of the second local UPF does not include the address of the second UPF, you can According to the ID and/or DNAI of the second local UPF, the address of the second local UPF is obtained through a local search or a request to the NRF.

According to other implementation manners of the embodiments of the present disclosure, the correspondence between the IP address pool and the UPF can be established at the local NEF. In this correspondence, the UPF can be uniquely designated by the identification information of the UPF, and the identification information of the UPF can include one or more of the ID, DNAI, and address of the UPF. The IP address pool is the IP address assigned by the UPF to the terminal. Generally, the IP address that each UPF can be used to assign to the terminal is in a certain pre-defined IP address pool. The IP address pool used by different UPFs contains different IP addresses. . Therefore, after establishing the correspondence between the IP address pool and the UPF, in the above step 31, obtaining the identification information of the first local UPF may specifically include:

a) The local NEF receives the information opening request for the PDU session of the first terminal sent by the local AF, and the information opening request carries the IP address of the first terminal;

b) The local NEF looks up the correspondence between the IP address pool and the UPF, determines the first IP address pool to which the IP address of the first terminal belongs and the first UPF corresponding to the first IP address pool, and obtains the first UPF the address of.

If the identification information of the UPF in the correspondence does not include the address of the UPF, the ID and/or DNAI of the first local UPF can be used in a similar manner to obtain the local UPF's ID and/or DNAI through local search or request from the NRF. address.

Referring to FIG. 4, the network information opening method provided by some embodiments of the present disclosure, when applied to the local UPF side, includes:

Step 41: The first local UPF establishes a first control plane interface with the local NEF.

Step 42: Through the first control plane interface, the first local UPF receives the network information opening request for the PDU session of the first terminal sent by the local NEF, and sends the information of the PDU session of the first terminal to the local NEF. Network open information.

Here, the network information open request carries at least one of the following information:

The IP address and/or application information of the first terminal;

The survival time of the first control plane interface;

Specify the subscription request for network open information.

The first local UPF may determine the corresponding first QoS flow according to the IP address and/or application information of the first terminal, and, according to the indication information of the requested network opening information, feed back the first QoS flow to the local NEF Network opening information related to a QoS flow.

Through the above steps, the embodiments of the present disclosure reduce the network elements through which the network open information transmission path passes, thereby simplifying the acquisition of the network open information and reducing the path transmission delay of the network open information.

In addition, the embodiments of the present disclosure can also implement subscription to certain pre-designated network open information. The first local UPF establishes a subscription relationship after receiving the subscription request for the designated network open information sent by the local NEF, so that after receiving the When the designated network opening information subscribed by the local NEF, the designated network opening information is sent to the local NEF.

Similarly, after the first control plane interface is established, the embodiment of the present disclosure can also remove the interface as needed. For example, when the interface survival time of the first control plane interface expires, the first local UPF may remove the first control plane interface. For another example, after receiving the interface release request message sent by the local NEF, the first local UPF may remove the first control plane interface according to the request message. For another example, when the first local UPF senses that the session connection between itself and the SMF is torn down, it sends an interface release request message to the local NEF, and removes the first control plane interface.

In order to better help the understanding of the above embodiments of the present disclosure, the above embodiments are further described through several examples of interaction between network elements.

Example 1:

This example 1 is shown in Figure 5. The Local NEF interacts with the 5G control plane to find the Local UPF. The process is as follows:

500. The User Equipment (UE) establishes a PDU session through the Local NEF.

501. The Local AF initiates an information release request to the Local NEF, and the information release request includes the UE IP address.

502. The Local NEF initiates a query request to the corresponding BSF, and finds the corresponding PCF address (according to the UE IP address).

503. The local NEF initiates an information release request to the corresponding PCF, and the information release request includes the UE IP address.

504. The PCF initiates a session policy update request to the SMF. The update request includes the UE's IP address and is used to request the UE's corresponding UPF address.

505. The SMF finds the corresponding UPF (not PSA UPF in Figure 5), and feeds back the ID of the UPF or the address of the DNAI or UPF to the PCF. Checking the corresponding UPF includes the following scenarios: In the Local Area Data Network (LADN) scenario, the corresponding UPF is the PDU Session Anchor (PSA) UPF of the found PDU session; In an uplink classifier (Uplink Classifier, ULCL) or branch point (branch point, BP) scenario, the corresponding UPF refers to the found Local PSA UPF.

506. The PCF feeds back the ID of the UPF, DNAI or the address of the UPF to the Local NEF.

When Local NEF finds the corresponding Local UPF, the process is as follows:

507. Local NEF finds the address of the UPF (according to the local configuration) through the ID or DNAI information of the UPF; or finds the address of the corresponding UPF through the NRF.

508. According to the address of the UPF, the Local NEF initiates the Nx interface connection establishment to the Local UPF, or calls the event exposure service of the edge UPF, and the Local NEF initiates the interface establishment process to the UPF. The parameters passed by the Local NEF to the UPF may include: UE IP address, application information (such as IP 5-tuple), etc. to find the corresponding QoS flow.

Local NEF also sends indication information of network opening information to UPF, which is used to indicate the information that UPF needs to open, which can specifically include but not limited to: 1) QoS congestion condition notifications (QoS congestion status notification), 2) QoS profile of QoS flow, 3) UPF load information, 4) specify the air interface delay of the QoS flow, 5) specify the end-to-end delay of the QoS flow, etc.

The information sent by the Local NEF to the UPF may also include: the lifetime of the interface, and a subscription request for certain network information.

509. Local UPF finds the corresponding QoS flow by querying UE IP, application flow information, etc. The Local UPF feeds back corresponding information to the Local NEF according to the instruction information of the network opening information sent by the Local NEF. If the UPF does not have all the relevant information needed by the Local NEF, but there is a part, the UPF will send the stored correct information to the Local NEF, and the missing information is marked with 0.

510. The Local NEF sends the network opening information to the Local AF.

When a certain network information subscribed by Local NEF appears in UPF, UPF feeds back to Local NEF according to the network information subscription request. (For example, the end-to-end delay, the UPF can be fed back to the Local NEF only after the end-to-end delay measurement is completed)

When the UE moves out of the UPF coverage, but does not switch SMF,

1) For the ULCL scenario, the UE IP address does not change, and the UE IP address perceived by the Local AF remains unchanged. When the BSF addresses the Local UPF, the Local NEF subscribes to the SMF for the UPF handover notification message. When the UE moves out of the UPF service range, the UPF redirection is triggered, and the SMF notifies the Local NEF, and the ID or address of the new PSA UPF Passed to Local NEF. Local NEF then initiates Nx interface connection establishment to the new PSA UPF

2) For LADN or BP scenarios, when the UE switches PSA UPF, the IP address of the UE is updated and changed, and the Local AF needs to re-initiate a local information open request to the Local NEF. For the previous Nx connection, when the PSA UPF senses that its session connection (N4 interface) is torn down, the UPF triggers the Local NEF to tear down the Nx connection.

When the UE moves out of the UPF coverage area and switches to SMF at the same time,

1) The IP address of the UE changes, and the Local AF needs to re-initiate a local information release request to the Local NEF. For the previous Nx connection, when the PSA UPF senses that its session connection (N4 interface) is torn down, the Local UPF triggers the Local NEF to release the Nx connection.

Example 2:

In this example 1, as shown in Figure 6, a series of IP address pools and the UPF address corresponding to each IP address pool are configured at the local NEF to establish the correspondence between the IP address pool and the UPF, and find the correspondence through Local NEF , Find Local UPF, the process is as follows:

600. The UE establishes a PDU session through the Local NEF.

602. The Local AF initiates an information release request to the Local NEF, and the information release request includes the UE IP address.

After receiving the information release request, the Local NEF finds the corresponding Local UPF by searching the corresponding relationship according to the IP address pool to which the UE IP address belongs.

603. According to the address of the UPF, the Local NEF initiates the Nx interface connection establishment to the Local UPF, or invokes the event exposure service of the edge UPF, the Local NEF initiates the interface establishment process to the UPF, and the parameters passed by the Local NEF to the UPF can include: UE IP address, Application information (such as IP 5-tuple) is used to find the corresponding QoS flow.

604. Local UPF finds the corresponding QoS flow by querying UE IP, application flow information, etc. The Local UPF feeds back corresponding information to the Local NEF according to the instruction information of the network opening information sent by the Local NEF. If the UPF does not have all the relevant information needed by the Local NEF, but there is a part, the UPF will send the stored correct information to the Local NEF, and the missing information is marked with 0.

605. The Local NEF sends the network opening information to the Local AF.

It can be seen from the above example 1 or 2 that the embodiment of the present disclosure establishes a new control plane interface between UPF and NEF, and UPF sends network opening information to NEF through the control plane interface, thereby simplifying the transmission of network opening information Path, reducing the transmission delay.

In the above embodiment, a new control plane interface is established between UPF and NEF to transmit network opening information. In other embodiments of the present disclosure, SMF (referred to as Local SMF in this article) can also be deployed at the edge of the network. The Local SMF directly opens the network information to the local NEF through the control plane, thereby simplifying the transmission path of network open information and reducing The transmission delay is reduced.

Referring to FIG. 7, the open sending method of network information provided by other embodiments of the present disclosure, when applied to a local NEF, includes:

Step 71: The local NEF receives an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal and indication information of network opening information.

Here, the information opening request carries the IP address of the first terminal and the indication information of the network opening information. The network opening information may specifically include one or more of the following information: QoS congestion status notification, QoS flow of QoS Policy, UPF load information, air interface delay of the specified QoS flow, and end-to-end delay of the specified QoS flow.

Step 72: The local NEF sends an information opening request for the PDU session of the first terminal to the first PCF. The information opening request carries the IP address of the first terminal and indication information of network opening information, so that the first PCF Send a network information opening request to the local SMF according to the information opening request.

Here, after receiving the information opening request, the first PCF may send a network information opening request to the local SMF to request network opening information for the PDU session of the first terminal.

In addition, before step 72, the local NEF may request the BSF for the address of the first PCF corresponding to the first terminal according to the IP address of the first terminal, and then in step 72, according to the address of the first PCF, The first PCF sends an information opening request for the PDU session of the first terminal.

Step 73: The local NEF receives the network opening information of the PDU session of the first terminal returned by the local SMF according to the network information opening request, and sends the network opening information to the local AF.

Through the above steps, the present disclosure realizes an information transmission method in which the local SMF directly sends the network opening information to the local NEF, which can simplify the transmission path of the network opening information and reduce the transmission delay.

Please refer to FIG. 8, which provides the method flow on the local SMF side in the above embodiment, which specifically includes:

Step 81: The local SMF receives a network information open request sent by the first PCF, where the network information open request carries identification information of the local NEF and network open indication information for the PDU session of the first terminal.

Here, the identification information of the local NEF includes the address and/or ID of the local NEF. The network opening information may include one or more of the following information: QoS congestion status notification, QoS policy of QoS flow, UPF load information, air interface delay of designated QoS flow, and end-to-end time of designated QoS flow Extension.

Step 82: The local SMF sends the network opening information of the PDU session of the first terminal to the local NEF according to the network information opening request.

Here, before step 82, the local SMF may obtain network opening information from the Radio Access Network (RAN) or UPF corresponding to the first terminal PDU session according to the network opening indication information, and then in step In 82, the network opening information is sent to the local NEF.

Figure 9 provides an example of the interaction process between the various network elements of the method described in the above embodiment, which specifically includes:

900. The UE establishes a PDU session through the Local NEF.

901. The Local AF initiates an information opening request to the local NEF, and the request includes the UE IP address and indication information of network opening information.

902. The local NEF initiates a query request to the corresponding BSF, and finds the corresponding PCF address (according to the UE IP address).

903. Local NEF initiates an information release request to the corresponding PCF. Including UE IP address and indication information of network open information.

904. The PCF initiates a session policy update request to the local SMF, and the update request includes indication information of network opening information for the PDU session of the first terminal, the ID or address of the local NEF,

905. The local SMF feeds back the corresponding network opening information to the local NEF.

906. The Local NEF sends the network opening information to the Local AF.

The various methods of the embodiments of the present disclosure have been described above. A device for implementing the above method will be further provided below.

Referring to FIG. 10, an embodiment of the present disclosure provides a local NEF 100, including:

The identification acquisition module 101 is configured to acquire identification information of the first local user plane function UPF;

The information sending module 102 is configured to request network opening information of the PDU session of the first terminal from the first local UPF through the first control plane interface, and send the network opening information to the local application function AF.

Optionally, the identification acquisition module includes:

The first receiving module is configured to receive an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal;

The first request module is configured to request the binding support function BSF for the address of the first policy control function PCF corresponding to the first terminal according to the IP address of the first terminal, and send the address of the first policy control function PCF corresponding to the first terminal according to the address of the first PCF. The first PCF sends an information opening request for the PDU session of the first terminal;

The first receiving module is configured to receive the identification information of the first UPF sent by the first PCF.

Optionally, the local NEF further includes the following modules (not shown in the figure):

The subscription processing module is used for subscribing to the session management function SMF through the BSF for the UPF switching notification message of the first terminal PDU session when requesting the address of the first PCF from the BSF, and receiving the SMF in the first terminal PDU session A UPF handover notification message sent after a UPF handover occurs, where the UPF handover notification message carries identification information of the second UPF to which the first terminal PDU session is switched;

The interface reconstruction module is configured to obtain the address of the second UPF according to the identification information of the second local UPF, and establish a second control plane interface with the second local UPF; and, through the second control plane interface, Request the network opening information of the PDU session of the first terminal from the second local UPF, and send the network opening information returned by the second local UPF to the local AF.

Optionally, the identification information of the first local UPF includes one or more of an ID of the first local UPF, a data network access identifier DNAI, and an address;

The interface establishment module is further configured to, when the identification information of the first local UPF includes the address of the first local UPF, establish a first control plane interface with the first local UPF according to the address of the first local UPF ; When the identification information of the first local UPF does not include the address of the first local UPF, the local NEF obtains the first local UPF according to the ID and/or DNAI of the first local UPF through a local search or a request to the network storage function NRF An address of a local UPF, and a first control plane interface with the first local UPF is established according to the address of the first local UPF.

Optionally, the identification acquisition module includes:

The second receiving module is configured to receive an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal;

The search module is used to search for the correspondence between the IP address pool and the UPF, determine the first IP address pool to which the IP address of the first terminal belongs and the first local UPF corresponding to the first IP address pool, and obtain the first The address of a local UPF.

Optionally, the information sending module is further configured to send a network information opening request for the PDU session of the first terminal to the first local UPF, where the network information opening request carries at least one of the following information item:

The IP address and/or application information of the first terminal;

The survival time of the first control plane interface;

Specify the subscription request for network open information.

The first removal module is configured to, when the interface survival time of the first control plane interface expires, the local NEF sends an interface release request message to the first local UPF, and removes the first control plane interface.

The second removal module is configured to remove the first control plane interface after receiving the interface release request message sent by the first local UPF.

Please refer to FIG. 11, an embodiment of the present disclosure provides a schematic structural diagram of a local NEF 1100, including: a processor 1101, a transceiver 1102, a memory 1103, and a bus interface, where:

In the embodiment of the present disclosure, the local NEF 1100 further includes: a program that is stored in the memory 1103 and can run on the processor 1101. When the program is executed by the processor 1101, the following steps are implemented:

Acquiring identification information of the first local user plane function UPF;

Establishing a first control plane interface with the first local UPF according to the identification information of the first local UPF;

Through the first control plane interface, request the network opening information of the PDU session of the first terminal from the first local UPF, and send the network opening information to the local application function AF.

It is understandable that, in the embodiment of the present disclosure, when the computer program is executed by the processor 1101, the various processes of the network information opening method embodiment shown in FIG. 3 can be realized, and the same technical effect can be achieved. To avoid repetition , I won’t repeat it here.

In FIG. 11, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1101 and various circuits of the memory represented by the memory 1103 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1102 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.

The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 can store data used by the processor 1101 when performing operations.

In some embodiments of the present disclosure, a computer-readable storage medium is also provided, on which a program is stored, and the program implements the following steps when being executed by a processor of the local NEF:

When the program is executed by the processor, it can realize all the implementations in the method for opening network information on the local NEF side shown in FIG. 3, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

Referring to FIG. 12, an embodiment of the present disclosure provides a first local UPF 120, including:

The interface establishment module 121 is used to establish a first control plane interface with the local NEF;

The information sending module 122 is configured to receive the network information opening request for the PDU session of the first terminal sent by the local NEF through the first control plane interface, and send the information of the PDU session of the first terminal to the local NEF Network open information.

Optionally, the network information open request carries at least one of the following information:

The IP address and/or application information of the first terminal;

The survival time of the first control plane interface;

Specify the subscription request for network open information.

Optionally, the information sending module 122 is further configured to determine the corresponding first QoS flow according to the IP address and/or application information of the first terminal, and, according to the indication information of the requested network opening information, to The local NEF feeds back network opening information related to the first QoS flow.

Optionally, the information sending module 122 is further configured to send the designated network opening information to the local NEF when receiving the designated network opening information subscribed by the local NEF.

Optionally, the first local UPF further includes the following modules (not shown in the figure):

The first removal module is configured to remove the first control plane interface according to the interface release request message after receiving the interface release request message sent by the local NEF.

The second teardown module is configured to send an interface release request message to the local NEF and tear down the first control plane interface when it senses that the session connection between itself and the SMF is torn down.

Please refer to FIG. 13, an embodiment of the present disclosure provides a schematic structural diagram of a first local UPF 1300, including: a processor 1301, a transceiver 1302, a memory 1303, and a bus interface, where:

In the embodiment of the present disclosure, the first local UPF 1300 further includes: a program that is stored in the memory 1303 and can run on the processor 1301, and when the program is executed by the processor 1301, the following steps are implemented:

Establish the first control plane interface with the local NEF;

Through the first control plane interface, the network information opening request for the PDU session of the first terminal sent by the local NEF is received, and the network opening information of the PDU session of the first terminal is sent to the local NEF.

It is understandable that, in the embodiment of the present disclosure, when the computer program is executed by the processor 1301, the various processes of the network information opening method embodiment shown in FIG. 4 can be realized, and the same technical effect can be achieved. In order to avoid repetition , I won’t repeat it here.

In FIG. 13, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1301 and various circuits of the memory represented by the memory 1303 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1302 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.

The processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1303 can store data used by the processor 1301 when performing operations.

In some embodiments of the present disclosure, there is also provided a computer-readable storage medium on which a program is stored, and the program is executed by the processor of the first local UPF to implement the following steps:

Establish the first control plane interface with the local NEF;

When the program is executed by the processor, all the implementation modes in the network information opening method of FIG. 4 applied to the first local UPF can be realized, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.

Referring to FIG. 14, an embodiment of the present disclosure provides a local NEF 140, including:

The request receiving module 141 is configured to receive an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal;

The request sending module 142 is configured to send an information opening request for the PDU session of the first terminal to the first PCF, where the information opening request carries the IP address of the first terminal and indication information of network opening information, so that the second A PCF sends a network information open request to the local SMF according to the information open request;

The information sending module 143 is configured to receive the network opening information of the PDU session of the first terminal returned by the local SMF according to the network information opening request, and send the network opening information to the local AF.

The address request module is configured to request and obtain the first PCF corresponding to the first terminal from the BSF according to the IP address of the first terminal before sending the information opening request for the PDU session of the first terminal to the first PCF the address of.

Optionally, the network opening information includes one or more of the following information: QoS congestion status notification, QoS policy of QoS flow, UPF load information, air interface delay of designated QoS flow, and end of designated QoS flow End-to-end delay;

Please refer to FIG. 15, an embodiment of the present disclosure provides a schematic structural diagram of a local NEF 1500, including: a processor 1501, a transceiver 1502, a memory 1503, and a bus interface, where:

In the embodiment of the present disclosure, the local NEF 1500 further includes: a program stored in the memory 1503 and capable of running on the processor 1501, and when the program is executed by the processor 1501, the following steps are implemented:

Receiving an information opening request for a PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal and indication information of network opening information;

Send an information opening request for the PDU session of the first terminal to the first PCF, where the information opening request carries the IP address of the first terminal and indication information of network opening information, so that the first PCF opens according to the information Request to send a network information open request to the local SMF;

Receiving the network opening information of the PDU session of the first terminal returned by the local SMF according to the network information opening request, and sending the network opening information to the local AF.

It is understandable that, in the embodiment of the present disclosure, when the computer program is executed by the processor 1501, the various processes of the network information opening method embodiment shown in FIG. 7 can be realized, and the same technical effect can be achieved. In order to avoid repetition , I won’t repeat it here.

In FIG. 15, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1501 and various circuits of the memory represented by the memory 1503 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1502 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.

The processor 1501 is responsible for managing the bus architecture and general processing, and the memory 1503 can store data used by the processor 1501 when performing operations.

In some embodiments of the present disclosure, a computer-readable storage medium is also provided, on which a program is stored, and the program is executed by a local NEF processor to implement the following steps:

When the program is executed by the processor, it can realize all the implementation modes in the network information opening method of FIG. 7 applied to the local NEF, and can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.

Referring to FIG. 16, an embodiment of the present disclosure provides a local SMF 160, including:

The first receiving module 161 is configured to receive a network information open request sent by the first PCF, where the network information open request carries identification information of the local NEF and indication information of network open information for the PDU session of the first terminal;

The first sending module 162 is configured to send the network opening information of the PDU session of the first terminal to the local NEF according to the network information opening request.

Optionally, the identification information of the local NEF includes the address and/or ID of the local NEF;

The network opening information includes one or more of the following information: QoS congestion status notification, QoS policy of QoS flow, UPF load information, air interface delay of designated QoS flow, and end-to-end delay of designated QoS flow ；

Optionally, the local SMF further includes the following modules (not shown in the figure):

The information acquisition module is configured to obtain network opening information from the RAN or UPF corresponding to the PDU session of the first terminal according to the network opening indication information before sending the network opening information of the PDU session of the first terminal to the local NEF. Open information.

Please refer to FIG. 17, an embodiment of the present disclosure provides a schematic structural diagram of a local SMF1700, including: a processor 1701, a transceiver 1702, a memory 1703, and a bus interface, where:

In the embodiment of the present disclosure, the local SMF1700 further includes: a program stored in the memory 1703 and capable of running on the processor 1701, and the program is executed by the processor 1701 to implement the following steps:

Receiving a network information open request sent by the first PCF, where the network information open request carries identification information of the local NEF and indication information of network open information for the PDU session of the first terminal;

According to the network information opening request, the network opening information of the PDU session of the first terminal is sent to the local NEF.

It is understandable that, in the embodiment of the present disclosure, when the computer program is executed by the processor 1701, the various processes of the network information opening method embodiment shown in FIG. 8 can be realized, and the same technical effect can be achieved. In order to avoid repetition , I won’t repeat it here.

In FIG. 17, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1701 and various circuits of the memory represented by the memory 1703 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1702 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.

The processor 1701 is responsible for managing the bus architecture and general processing, and the memory 1703 can store data used by the processor 1701 when performing operations.

In some embodiments of the present disclosure, a computer-readable storage medium is also provided, on which a program is stored, and the program is executed by a processor of the local SMF to implement the following steps:

When the program is executed by the processor, all the implementation modes in the network information opening method of Fig. 8 applied to the local SMF can be realized, and the same technical effect can be achieved. In order to avoid repetition, it will not be repeated here.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present disclosure.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present disclosure.

In addition, the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present disclosure essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several The instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by controlling the relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When executed, it may include the procedures of the above-mentioned method embodiments. Wherein, the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.

It can be understood that the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, modules, units, and sub-units can be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (Digital Signal Processor, DSP), and digital signal processing equipment (DSP Device, DSPD). ), programmable logic devices (Programmable Logic Device, PLD), Field-Programmable Gate Array (FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, used to implement this disclosure Described functions in other electronic units or combinations thereof.

For software implementation, the technology described in the embodiments of the present disclosure can be implemented by modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present disclosure. It should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

A method for opening network information, applied to the local network opening function NEF, includes:

The local NEF obtains the identification information of the first local user plane function UPF;

The local NEF establishes a first control plane interface with the first local UPF according to the identification information of the first local UPF;

The local NEF requests the network opening information of the PDU session of the first terminal from the first local UPF, and sends the network opening information to the local application function AF.
The method according to claim 1, wherein the step of obtaining the identification information of the first local user plane function UPF comprises:

The local NEF receives an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal;

The local NEF requests the binding support function BSF for the address of the first policy control function PCF corresponding to the first terminal according to the IP address of the first terminal, and sends to the first PCF according to the address of the first PCF An information opening request for the PDU session of the first terminal;

The local NEF receives the identification information of the first UPF sent by the first PCF.
The method of claim 2, further comprising:

When the local NEF requests the address of the first PCF from the BSF, it subscribes to the session management function SMF through the BSF to the UPF switching notification message of the first terminal PDU session, and receives the SMF after the UPF switching of the first terminal PDU session occurs A sent UPF switching notification message, where the UPF switching notification message carries the identification information of the second UPF to which the PDU session of the first terminal is switched;

The local NEF obtains the address of the second UPF according to the identification information of the second local UPF, and establishes a second control plane interface with the second local UPF;

The local NEF requests the network opening information of the PDU session of the first terminal from the second local UPF, and sends the network opening information returned by the second local UPF to the local AF.
The method of claim 1, wherein:

The identification information of the first local UPF includes one or more of the ID of the first local UPF, the data network access identifier DNAI, and the address;

The step of establishing the first control plane interface with the first local UPF includes:

When the identification information of the first local UPF includes the address of the first local UPF, establishing a first control plane interface with the first local UPF according to the address of the first local UPF;

When the identification information of the first local UPF does not include the address of the first local UPF, the local NEF obtains the first local UPF according to the ID and/or DNAI of the first local UPF through local search or a request to the network storage function NRF. The address of the local UPF, and the first control plane interface with the first local UPF is established according to the address of the first local UPF.
The method according to claim 1, wherein the step of obtaining the identification information of the first local user plane function UPF comprises:

The local NEF receives an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal;

The local NEF looks up the correspondence between the IP address pool and the UPF, determines the first IP address pool to which the IP address of the first terminal belongs and the first local UPF corresponding to the first IP address pool, and obtains the first local UPF the address of.
The method according to any one of claims 1 to 5, wherein requesting the first local UPF for network opening information of the PDU session of the first terminal comprises:

Sending a network information open request for the PDU session of the first terminal to the first local UPF, where the network information open request carries at least one of the following information:

The IP address and/or application information of the first terminal;

Indication information of network opening information, the network opening information includes one or more of the following information: QoS congestion status notification, QoS policy of QoS flow, UPF load information, air interface delay of designated QoS flow, and, designated QoS End-to-end delay of the flow;

The survival time of the first control plane interface;

Specify the subscription request for network open information.
The method according to any one of claims 1 to 5, further comprising:

When the interface survival time of the first control plane interface expires, the local NEF sends an interface release request message to the first local UPF, and removes the first control plane interface.
The method according to any one of claims 1 to 5, further comprising:

After receiving the interface release request message sent by the first local UPF, the local NEF removes the first control plane interface.
A method for sending open network information, applied to the first local UPF, includes:

The first local UPF establishes a first control plane interface with the local NEF;

The first local UPF receives the network information opening request for the PDU session of the first terminal sent by the local NEF, and sends the network opening information of the PDU session of the first terminal to the local NEF.
The method according to claim 9, wherein the network information release request carries at least one of the following information:

The IP address and/or application information of the first terminal;

Indication information of network opening information, the network opening information includes one or more of the following information: QoS congestion status notification, QoS policy of QoS flow, UPF load information, air interface delay of designated QoS flow, and, designated QoS End-to-end delay of the flow;

The survival time of the first control plane interface;

Specify the subscription request for network open information.
The method according to claim 10, wherein the step of sending network opening information of the PDU session of the first terminal to the local NEF comprises:

The first local UPF determines the corresponding first QoS flow according to the IP address and/or application information of the first terminal, and, according to the indication information of the requested network opening information, feeds back the first QoS flow to the local NEF Related network open information.
The method according to claim 11, wherein the step of sending network opening information of the PDU session of the first terminal to the local NEF further comprises:

When receiving the designated network opening information subscribed by the local NEF, the designated network opening information is sent to the local NEF.
The method of claim 9, further comprising:

After receiving the interface release request message sent by the local NEF, the first local UPF removes the first control plane interface according to the interface release request message.
The method of claim 9, further comprising:

When the first local UPF senses the disconnection of the session connection between itself and the SMF, it sends an interface release request message to the local NEF, and removes the first control plane interface.
A method for sending open network information, applied to local NEF, including:

The local NEF receives an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal and indication information of network opening information;

The local NEF sends an information opening request for the PDU session of the first terminal to the first PCF, and the information opening request carries the IP address of the first terminal and indication information of network opening information, so that the first PCF can follow the Information open request sends a network information open request to the local SMF;

The local NEF receives the network opening information of the PDU session of the first terminal returned by the local SMF according to the network information opening request, and sends the network opening information to the local AF.
The method according to claim 15, wherein, before sending the information opening request for the PDU session of the first terminal to the first PCF, the method further comprises:

The local NEF requests the binding support function BSF according to the IP address of the first terminal and obtains the address of the first PCF corresponding to the first terminal.
The method according to any one of claims 15 to 16, wherein:

The network opening information includes one or more of the following information: QoS congestion status notification, QoS policy of QoS flow, UPF load information, air interface delay of designated QoS flow, and end-to-end delay of designated QoS flow ；
A method for sending network open information, applied to local SMF, including:

The local SMF receives a network information open request sent by the first PCF, where the network information open request carries identification information of the local NEF and indication information of network open information for the PDU session of the first terminal;

The local SMF sends the network opening information of the PDU session of the first terminal to the local NEF according to the network information opening request.
The method of claim 18, wherein:

The identification information of the local NEF includes the address and/or ID of the local NEF;

The network opening information includes one or more of the following information: QoS congestion status notification, QoS policy of QoS flow, UPF load information, air interface delay of designated QoS flow, and end-to-end delay of designated QoS flow ；
The method according to claim 18, wherein, before sending the network opening information of the PDU session of the first terminal to the local NEF, the method further comprises:

The local SMF obtains network opening information from the radio access network RAN or UPF corresponding to the first terminal PDU session according to the network opening indication information.
A type of local NEF, including:

An identification acquisition module, configured to acquire identification information of the first local user plane function UPF;

The interface establishment module is configured to establish a first control plane interface with the first local UPF according to the identification information of the first local UPF;

The information sending module is configured to request the network opening information of the PDU session of the first terminal from the first local UPF, and send the network opening information to the local application function AF.
21. The method of claim 21, wherein the identification acquisition module comprises:

The first receiving module is configured to receive an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal;

The first request module is configured to request the binding support function BSF for the address of the first policy control function PCF corresponding to the first terminal according to the IP address of the first terminal, and send the address of the first policy control function PCF corresponding to the first terminal according to the address of the first PCF. The first PCF sends an information opening request for the PDU session of the first terminal;

The first receiving module is configured to receive the identification information of the first UPF sent by the first PCF.
21. The method of claim 21, wherein the identification acquisition module comprises:

The second receiving module is configured to receive an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal;

The search module is used to search for the correspondence between the IP address pool and the UPF, determine the first IP address pool to which the IP address of the first terminal belongs and the first local UPF corresponding to the first IP address pool, and obtain the first The address of a local UPF.
A local NEF, including a transceiver and a processor, where,

The processor is configured to obtain identification information of the first local user plane function UPF; establish a first control plane interface with the first local UPF according to the identification information of the first local UPF;

The transceiver is used for the local NEF to request the network opening information of the PDU session of the first terminal from the first local UPF, and to send the network opening information to the local application function AF.
A first local UPF, including:

The interface establishment module is used to establish the first control plane interface with the local NEF;

The information sending module is configured to receive the network information opening request for the PDU session of the first terminal sent by the local NEF, and send the network opening information of the PDU session of the first terminal to the local NEF.
A first local UPF, including a transceiver and a processor, where,

The processor is configured to establish a first control plane interface with a local NEF;

The transceiver is configured to receive the network information opening request for the PDU session of the first terminal sent by the local NEF, and send the network opening information of the PDU session of the first terminal to the local NEF.
A type of local NEF, including:

The request receiving module is configured to receive an information opening request for the PDU session of the first terminal sent by the local AF, where the information opening request carries the IP address of the first terminal;

The request sending module is configured to send an information opening request for the PDU session of the first terminal to the first PCF, where the information opening request carries the IP address of the first terminal and indication information of network opening information, so that the first The PCF sends a network information opening request to the local SMF according to the information opening request;

The information sending module is configured to receive the network opening information of the PDU session of the first terminal returned by the local SMF according to the network information opening request, and send the network opening information to the local AF.
A local NEF, including a transceiver and a processor, where,

The transceiver is configured to receive an information open request for a PDU session of the first terminal sent by a local AF, the information open request carries the IP address of the first terminal; and send a PDU session for the first terminal to the first PCF The information opening request carries the IP address of the first terminal and indication information of network opening information, so that the first PCF sends a network information opening request to the local SMF according to the information opening request;

The processor is configured to receive the network opening information of the PDU session of the first terminal returned by the local SMF according to the network information opening request, and send the network opening information to the local AF.
A local SMF including:

The first receiving module is configured to receive a network information open request sent by the first PCF, where the network information open request carries identification information of the local NEF and indication information of network open information for the PDU session of the first terminal;

The first sending module is configured to send the network opening information of the PDU session of the first terminal to the local NEF according to the network information opening request.
A local SMF, including a transceiver and a processor, where,

The transceiver is configured to receive a network information open request sent by a first PCF, where the network information open request carries identification information of the local NEF and network open indication information for the PDU session of the first terminal;

The processor is configured to send the network opening information of the PDU session of the first terminal to the local NEF according to the network information opening request.
A local NEF, comprising: a processor, a memory, and a program stored on the memory and capable of running on the processor, and when the program is executed by the processor, it can implement any one of claims 1 to 8 The steps of the method for opening network information as described in clause 1, or the steps of implementing the method for opening network information according to any one of claims 15 to 17.
A first local UPF, comprising: a processor, a memory, and a program stored on the memory and capable of running on the processor, and when the program is executed by the processor, the implementation is as claimed in claims 9 to 14 Any one of the steps of the method for opening network information.
A local SMF comprising: a processor, a memory, and a program stored on the memory and capable of running on the processor, and when the program is executed by the processor, it can implement any one of claims 18 to 20 The steps of the method for opening network information described in the item
A computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for opening network information according to any one of claims 1 to 8 is realized The steps of, or the steps of implementing the method for opening network information according to any one of claims 15 to 17, or the steps of implementing the method for opening network information according to any one of claims 18 to 20 , Or, to implement the steps of the method for opening network information according to any one of claims 9 to 14.