CN118175566A - Link detection method, device, equipment and readable storage medium - Google Patents

Abstract

The present application discloses a link detection method, apparatus, device and readable storage medium, wherein a link detection method is applied to a session management function network element, including: determining a network device to be detected; generating link detection control information according to the network device to be detected; sending the link detection control information to a detection device corresponding to the network device to be detected, so that the detection device performs link detection on the network device to be detected according to the link detection control information. It can be seen that the present application is to determine the network device to be detected that needs to be detected by the session management function network element and send the corresponding link control information to the detection device corresponding to the network device to be detected, that is, the session management function network element coordinates the link detection process, so that the detection device does not need to perform link detection on each corresponding device to be detected regularly, reducing the resource occupation of the detection device during link detection, thereby improving the network element efficiency during link detection.

Description

Link detection method, device, equipment and readable storage medium

Technical Field

The present application relates to the field of communications, and more specifically, to a link detection method, device, equipment, and readable storage medium.

Background technique

The overall architecture of the fifth generation communication system (5G) includes the access management function (AMF), the session management function (SMF) and the user plane function (UPF). Among them, the user plane connection is the user equipment (UE) to the radio access network ((R)AN) to the UPF to the data network (DN); the control plane connection is the UE to the AMF to the SMF. The control plane and the user plane are separated architectures. The user plane function interacts with the session management function through the N4 interface and is directly controlled and managed by the session management function. The service flow is processed according to the various policies issued by the session management function. In order to maintain the normal operation of the 5G system, it is usually necessary to perform link detection on the radio access network and the user plane function.

Currently, the user plane function network element and the connected radio access network perform link detection by periodically sending detection messages to each other and receiving detection response messages from each other. When the radio access network or the user plane function fails to reply to the detection response message for more than a certain number of times, it can be determined that a link failure has occurred in the radio access network or the user plane function network element. However, since the user plane function network element is usually connected to hundreds or even thousands of radio access networks, the current link detection method consumes a large amount of computing resources of the user plane function, resulting in reduced network element efficiency.

Summary of the invention

The embodiments of the present application provide a link detection method, apparatus, device and readable storage medium, which can improve the network element efficiency during link detection.

In view of this, an embodiment of the present application provides a link detection method, which is applied to a session management function network element, including:

Determine the network device to be detected;

Generate link detection control information according to the network device to be detected;

The link detection control information is sent to a detection device corresponding to the network device to be detected, so that the detection device performs link detection on the network device to be detected according to the link detection control information.

Optionally, the network device to be detected includes a wireless access network to be detected and/or a user plane function to be detected; when the network device to be detected includes the wireless access network to be detected, the detection device includes a user plane function network element corresponding to the wireless access network to be detected; when the network device to be detected includes a user plane function network element to be detected, the detection device includes a wireless access network corresponding to the user plane function network element to be detected.

Optionally, the link detection control information includes link detection address information and/or link detection indication information, the link detection address information includes address information of the network device to be detected, and the link detection indication information is used to indicate whether the detection device performs link detection.

Optionally, when the network device to be detected includes a wireless access network to be detected, and the link detection control information includes link detection address information, sending the link detection control information to a detection device corresponding to the network device to be detected includes:

Sending the link detection address information to the user plane function network element corresponding to the wireless access network to be detected through a connection establishment request message;

Or, sending the link detection address information to the user plane function network element corresponding to the wireless access network to be detected through a coupling establishment response message;

Or, sending the link detection address information to the user plane function network element corresponding to the wireless access network to be detected through a coupling update request message;

Or, the link detection address information is sent to the user plane function network element corresponding to the wireless access network to be detected through a coupling update response message.

Optionally, when the network device to be detected includes a wireless access network to be detected, and the link detection control information includes link detection indication information, sending the link detection control information to a detection device corresponding to the network device to be detected includes:

Sending the link detection indication information to a user plane function network element corresponding to the wireless access network to be detected through a session creation request message;

Or, the link detection indication information is sent to a user plane function network element corresponding to the radio access network to be detected through a session modification request message.

Optionally, when the network device to be detected includes a user plane function network element to be detected, and the link detection control information includes link detection indication information, sending the link detection control information to a detection device corresponding to the network device to be detected includes:

The link detection indication information is sent to the radio access network corresponding to the user plane function network element to be detected through a communication protocol message.

Optionally, sending the link detection indication information to the radio access network corresponding to the user plane function network element to be detected through a communication protocol message includes:

The link detection indication information is sent to the access management function network element, so that the access management function network element sends the link detection indication information to the radio access network corresponding to the user plane function network element to be detected through a communication protocol message.

The embodiment of the present application further provides a link detection device, which is applied to a session management function network element, and the device includes:

A determination unit, used for determining a network device to be detected;

A generating unit, configured to generate link detection control information according to the network device to be detected;

The sending unit is used to send the link detection control information to the detection device corresponding to the network device to be detected, so that the detection device performs link detection on the network device to be detected according to the link detection control information.

The embodiment of the present application also provides a computer device, including: a memory, a processor, and a bus system;

Wherein, the memory is used to store programs;

The processor is used to execute the program in the memory to implement any one of the link detection methods described above;

The bus system is used to connect the memory and the processor so that the memory and the processor can communicate with each other.

An embodiment of the present application also provides a computer-readable storage medium storing instructions, which, when executed on a computer, enables the computer to execute any one of the link detection methods described above.

The embodiment of the present application provides a link detection method, which is applied to a session management function network element, including: determining a network device to be detected; generating link detection control information according to the network device to be detected; sending the link detection control information to a detection device corresponding to the network device to be detected, so that the detection device performs link detection on the network device to be detected according to the link detection control information. It can be seen that the present application is that the session management function network element determines the network device to be detected that needs to be detected and sends the corresponding link control information to the detection device corresponding to the network device to be detected, that is, the session management function network element coordinates the link detection process, so that the detection device does not need to perform link detection on each corresponding device to be detected at regular intervals, reducing the resource occupation of the detection device during link detection, thereby improving the network element efficiency during link detection.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

FIG1 is a schematic diagram of the overall architecture of a fifth generation communication system provided in an embodiment of the present application;

FIG2 is a schematic diagram of a flow chart of a link detection method provided in an embodiment of the present application;

FIG3 is a schematic diagram of a format of link detection indication information provided in an embodiment of the present application;

FIG4a is a flow chart of a session management function network element triggering a coupling establishment process provided in an embodiment of the present application;

FIG4b is a flow chart of a user plane function network element triggering a coupling establishment process provided in an embodiment of the present application;

FIG4c is a flow chart of a session management function network element triggering a coupling update process provided in an embodiment of the present application;

FIG4d is a flow chart of a user plane functional network element triggering a coupling update process provided in an embodiment of the present application;

5a is a schematic diagram of the format of link detection address information in a coupling establishment request message, a coupling establishment response message, a coupling update request message, and a coupling update response message provided by an embodiment of the present application;

FIG5b is a schematic diagram of the format of link detection indication information in a session creation request message or a session modification request message provided by an embodiment of the present application;

FIG5c is a schematic diagram of the format of a link detection indication information in a PDU Session Resource Setup Request Transfer field and a PDU Session Resource Modify Request Transfer field provided by an embodiment of the present application;

FIG6 is a schematic diagram of a flow chart of another link detection method provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of a link detection device provided in an embodiment of the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof 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 steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

Please refer to Figure 1. The overall architecture of the fifth generation communication system (5G) includes an access management function (AMF) network element, a session management function (SMF) network element, and a user plane function (UPF) network element. In the subsequent embodiments, the function network element is referred to as "function", for example, the access management function network element is referred to as the access management function; the session management function network element is referred to as the session management function, and the user plane management function network element is referred to as the user plane management function.

Among them, the user plane connection is from user equipment (UE) to radio access network (RAN) to UPF to data network (DN); the control plane connection is from UE to AMF to SMF. The control plane and user plane are separated architectures. The user plane function interacts with the session management function through the N4 interface and is directly controlled and managed by the session management function. It executes service flow processing according to various policies issued by the session management function.

The user plane message of the N3 interface is encapsulated by the General Packet Radio Service Tunnelling Protocol User Plane (GTP-U) protocol. GTP-U is encapsulated by the User Datagram Protocol (UDP) protocol, and the IP message header to which GTP-U belongs carries the source Internet Protocol (IP) address and the destination IP address. Based on the IP routing method, the message is transmitted between the (R)AN and UPF, thus forming a transmission channel between the (R)AN and UPF.

According to the provisions of the 3GPP TS 23.007 protocol, the N3 interface between the (R)AN and the UPF needs to support user plane link detection, that is, the UPF periodically sends a detection message (GTP-U Echo Request) to the (R)AN, and after receiving the GTP-U EchoRequest, the (R)AN replies with a detection response message (GTP-U Echo Response) to the UPF. Similarly, the (R)AN also periodically sends (GTP-U Echo Request) to the UPF, and after receiving the GTP-U Echo Request, the UPF replies with a GTP-U EchoResponse to the (R)AN. When the (R)AN fails to reply to the GTP-U Echo Request sent by the UPF for more than a certain number of times, the UPF determines that the user plane link with this (R)AN is faulty. Similarly, when the UPF fails to reply to the Echo Request sent by the (R)AN for more than a certain number of times, the (R)AN determines that the user plane link with this UPF is faulty. The protocol also stipulates that when a link failure occurs, the (R)AN or UPF needs to report the failure to the operation and maintenance system, such as reporting a user plane link disconnection alarm, and the (R)AN or UPF also needs to delete the transmission channel resources associated with this link.

In actual 5G deployment, UPF will generally connect to hundreds to thousands or even more (R)ANs. UPF will periodically initiate user-plane link detection to the connected (R)ANs, send GTP-U Echo Request messages to these (R)ANs, and receive GTP-U Echo Response messages from (R)ANs. At the same time, UPF will also receive GTP-U EchoRequests sent by these (R)ANs and reply with GTP-U Echo Responses. The above processing consumes the computing resources of (R)ANs, especially UPF, resulting in low network element efficiency. Among them, network element efficiency is used to measure the performance and efficiency of network elements (network elements) in communication networks. Network elements are the basic units that constitute communication networks, such as switches, routers, base stations, etc. The efficiency of network elements directly affects the performance and service quality of the entire communication network.

Therefore, in response to the above problems, the embodiments of the present application provide a link detection method, apparatus, device and readable storage medium, which can improve the network element efficiency during link detection.

Please refer to FIG. 2 . A link detection method provided in an embodiment of the present application can be applied to a session management function, and specifically includes the following steps:

S201: Determine a network device to be detected.

In the embodiment of the present application, the session management function may first determine the network device to be detected that needs to perform link detection from the network devices to be detected that are controlled and managed.

It is understandable that the link detection process can be managed by the session management function in a coordinated manner, that is, the session management function can directly determine the devices to be detected that need to be detected, so that the corresponding detection device does not need to perform link detection on each device to be detected regularly, reducing the resource occupation of the detection device during link detection, thereby improving the network element efficiency during link detection. Specifically, the technician can determine the network devices to be detected that need to be detected and configure them into the session management function, so that the session management function can determine the network devices to be detected that need to be detected.

In a possible implementation of the embodiment of the present application, the network device to be detected includes a wireless access network to be detected and/or a user plane function to be detected; when the network device to be detected includes a wireless access network to be detected, the detection device includes a user plane function corresponding to the wireless access network to be detected; when the network device to be detected includes a user plane function to be detected, the detection device includes a wireless access network corresponding to the user plane function to be detected. It can be understood that the wireless access network to be detected and/or the user plane function to be detected that need to be detected can be directly determined by the session management function, so that the corresponding user plane function does not need to perform link detection on each wireless access network regularly, so that the corresponding wireless access network does not need to perform link detection on the corresponding user plane function regularly, which reduces the resource occupation of the user plane function during link detection, thereby improving the network element efficiency during link detection.

S202: Generate link detection control information according to the network device to be detected.

In an embodiment of the present application, after determining the network device to be detected, the session management function can generate link detection control information according to the network device to be detected, so that the detection device can perform link detection on the network device to be detected by sending link control information to the detection device corresponding to the network device to be detected, so that the detection device does not need to perform link detection on each device to be detected at regular intervals, thereby reducing the resource occupation of the detection device during link detection, thereby improving the network element efficiency during link detection.

In a possible implementation of an embodiment of the present application, the link detection control information includes link detection address information and/or link detection indication information, the link detection address information includes address information of the network device to be detected, and the link detection indication information is used to indicate whether the detection device performs link detection. It can be understood that the link detection control information determined according to the network device to be detected may include link detection address information (GTP-U PathDetection Information Element), which can also be called a GTP-U link detection information unit. The link detection address information may include address information of the network device to be detected, such as address information of one or more wireless access networks to be detected and/or address information of one or more user plane functions to be detected. The link detection control information may also include link detection indication information (GTP-U Path Detect Indication IE) used to indicate whether the detection device corresponding to the device to be detected performs link detection on the device to be detected, which can also be called a GTP-U link detection indication information unit. The specific format of the link detection indication information can be shown in Figure 3.

In the process of creating a session in the 5G architecture, the session management function notifies the user plane function to create and update session resources, and notifies the wireless access network to create session resources. The key step is to bring the IP address and tunnel endpoint identifier (TEID) of the wireless access network to the user plane function, and bring the IP address and TEID of the user plane function to the wireless access network. Therefore, the link detection control information can also be used to make the user plane function corresponding to the wireless access network to be detected detect the wireless access network to be detected, or to make the wireless access network corresponding to the user plane function to be detected detect the user plane function to be detected.

S203: Send the link detection control information to a detection device corresponding to the network device to be detected.

In this embodiment, after the session management function generates the link detection control information, it can send the link control information to the detection device corresponding to the network device to be detected, so that after receiving the link detection control information, the detection device can perform link detection on the network device to be detected according to the link detection control information, so that the corresponding detection device does not need to perform link detection on each device to be detected regularly, reducing the resource occupation of the detection device during link detection, thereby improving the network element efficiency during link detection. It can be understood that when the network device to be detected is a wireless access network to be detected, the link control information can be sent to the user plane function corresponding to the wireless access network to be detected, so that after receiving the link detection control information, the user management function can perform link detection on the wireless access network to be detected according to the link detection control information. When the network device to be detected is a user plane function to be detected, the link control information can be sent to the wireless access network corresponding to the user plane function to be detected, so that after receiving the link detection control information, the wireless access network can perform link detection on the user plane function to be detected according to the link detection control information.

In a possible implementation method of an embodiment of the present application, when the network device to be detected includes a wireless access network to be detected, and the link detection control information includes link detection address information, the link detection address information is sent to the user plane function corresponding to the wireless access network to be detected through a coupling establishment request message; or, the link detection address information is sent to the user plane function corresponding to the wireless access network to be detected through a coupling establishment response message; or, the link detection address information is sent to the user plane function corresponding to the wireless access network to be detected through a coupling update request message; or, the link detection address information is sent to the user plane function corresponding to the wireless access network to be detected through a coupling update response message.

It can be understood that when the network device to be detected includes a wireless access network to be detected, and the link detection control information includes link detection address information, the session management function can send the link detection address information to the user plane function corresponding to the wireless access network to be detected through a coupling establishment request message, or a coupling establishment response message, or a coupling update request message, or a coupling update response message.

Specifically, the communication between the session management function and the user plane function is based on the Packet Forwarding Control Protocol (PFCP) described in 3GPP TS 29.244. The session management function and the user plane function first need to establish a connection through the connection establishment process, which can be triggered by the session management function or the user plane function. After the connection is successfully established, the connection information can also be updated through the connection update process, which can also be triggered by the session management function or the user plane function.

Therefore, as shown in FIG. 4 a , when the session management function triggers the association establishment process, the session management function may send the link detection address information to the user plane function via an association setup request message (Association Setup Request).

As shown in FIG. 4 b , when the user plane function triggers the association establishment process, the session management function may send the link detection address information to the user plane function via an Association Setup Response message.

As shown in FIG. 4 c , when the session management function triggers the association update process, the session management function may send the link detection address information to the user plane function via an association update request message (Association Update Request).

As shown in FIG. 4d , when the user plane function triggers the association update process, the session management function may send the link detection address information to the user plane function via an Association Update Response message.

The type of the link detection address information may be a remote GTP-U entity (Remote GTP-U Peer), and the specific format of the Remote GTP-U Peer information unit has been defined in 3GPP TS 29.244 Section 8.2.70. The specific format of the link detection address information in the association establishment request message, the association establishment response message, the association update request message, and the association update response message may be as shown in FIG. 5a.

In a possible implementation of an embodiment of the present application, when the network device to be detected includes a wireless access network to be detected, and the link detection control information includes link detection indication information, the link detection indication information is sent to the user plane function corresponding to the wireless access network to be detected through a session creation request message; or, the link detection indication information is sent to the user plane function corresponding to the wireless access network to be detected through a session modification request message. It can be understood that in the session creation process and the session modification process, the session management function needs to send a session creation request message (Session Setup Request) and a session modification request message (Session ModificationRequest) to the user plane function based on the PFCP protocol, so the session management function can add the link detection indication information to the session creation request message or the session modification request message to implement sending the link detection indication information to the user plane function corresponding to the wireless access network to be detected. The specific format of the link detection indication information in the session creation request message or the session modification request message can be shown in Figure 5b.

In a possible implementation of an embodiment of the present application, when the network device to be detected includes a user plane function to be detected, and the link detection control information includes link detection indication information, the link detection indication information is sent to the radio access network corresponding to the user plane function to be detected through a communication protocol message. It can be understood that the session management function and the radio access network are based on the Next Generation Application Protocol (NGAP) described in 3GPP TS 38.413. Therefore, the session management function can send the link detection indication information to the radio access network corresponding to the user plane function to be detected through a communication protocol message by adding the link detection indication information to the communication protocol message.

In a possible implementation of an embodiment of the present application, link detection indication information can be sent to an access management function so that the access management function sends the link detection indication information to the radio access network corresponding to the user plane function to be detected through a communication protocol message. It can be understood that the message communicated between the session management function and the radio access network can be forwarded by the access management function. The session management function can carry the forwarding field specified by the NGAP protocol in the N11 interface, and the access management function then assembles the forwarding field into a complete NGAP protocol message and sends it to the radio access network through the N2 interface. The forwarding field specified by the NGAP protocol can be a PDU session resource setup request transfer (PDU Session Resource Setup Request Transfer) field and a PDU session resource modification request transfer (PDU Session Resource Modify Request Transfer) field to which link detection indication information is added, and the specific format of the link detection indication information in the PDU Session Resource Setup Request Transfer field and the PDU Session Resource Modify Request Transfer field can be as shown in Figure 5c.

From the introduction of the above embodiments, it can be seen that a link detection method provided by the embodiments of the present application is that the session management function determines the network device to be detected that needs to perform link detection and sends the corresponding link control information to the detection device corresponding to the network device to be detected. That is, the session management function coordinates the link detection process, so that the detection device does not need to perform link detection on each corresponding device to be detected at regular intervals, thereby reducing the resource occupation of the detection device during link detection, thereby improving the network element efficiency during link detection.

In order to make the technical solution of the present application clearer and easier to understand, the link detection method of the present application is described in detail below in conjunction with a specific communication scenario.

Referring to FIG. 6 , an embodiment of the present application provides another link detection method, which specifically includes the following steps:

1. SMF sends an N11 interface message to AMF, which carries the PDU Session Resource SetupRequest Transfer field, which carries the link detection indication information GTP-U Path Detect IndicationIE, where the link detection indication information is used to indicate whether the detection device corresponding to the device to be detected performs link detection on the device to be detected.

2. AMF sends a PDU Session Resource Setup Request message to the (R)AN, which carries the PDU Session Resource Setup Request Transfer field and the link detection indication information GTP-U Path Detect Indication IE.

3. (R)AN sends a PDU Session Resource Setup Response message to AMF.

4. AMF sends an N11 interface message to SMF, which carries the PDU session resource setup response transfer (PDUSession Resource Setup Response Transfer) field.

5. SMF sends a PFCP Session Modification Request message to UPF, which carries the link detection address information GTP-U Path Detect Indication IE, where the link detection address information may include the address information of the network device to be detected.

6. UPF sends a PFCP Session Modification Response message to SMF.

From the introduction of the above embodiments, it can be seen that the embodiments of the present application provide another link detection method, in which SMF uniformly controls the user plane links that need to perform status detection, and passes corresponding parameters to (R)AN and UPF to indicate whether the GTP-U peer needs to perform link detection, thereby controlling the (R)AN and UPF link detection actions, so that the user plane link detection focuses on key links, thereby improving the network element efficiency during link detection.

Please refer to FIG. 7 . The embodiment of the present application further provides a link detection device, which is applied to a session management function network element. The device includes:

A determination unit 701 is used to determine a network device to be detected;

A generating unit 702, configured to generate link detection control information according to the network device to be detected;

The sending unit 703 is used to send the link detection control information to the detection device corresponding to the network device to be detected, so that the detection device performs link detection on the network device to be detected according to the link detection control information.

Optionally, the network device to be detected includes a wireless access network to be detected and/or a user plane functional network element to be detected; when the network device to be detected includes the wireless access network to be detected, the detection device includes a user plane functional network element corresponding to the wireless access network to be detected; when the network device to be detected includes a user plane functional network element to be detected, the detection device includes a wireless access network corresponding to the user plane functional network element to be detected.

Optionally, the link detection control information includes link detection address information and/or link detection indication information, the link detection address information includes address information of the network device to be detected, and the link detection indication information is used to indicate whether the detection device performs link detection.

Optionally, when the network device to be detected includes a wireless access network to be detected, and the link detection control information includes link detection address information, the sending unit 703 is specifically configured to:

Sending the link detection address information to the user plane function network element corresponding to the wireless access network to be detected through a connection establishment request message;

Or, sending the link detection address information to the user plane function network element corresponding to the wireless access network to be detected through a coupling establishment response message;

Or, sending the link detection address information to the user plane function network element corresponding to the wireless access network to be detected through a coupling update request message;

Or, the link detection address information is sent to the user plane function network element corresponding to the wireless access network to be detected through a coupling update response message.

Optionally, when the network device to be detected includes a radio access network to be detected, and the link detection control information includes link detection indication information, the sending unit 703 is specifically configured to:

Sending the link detection indication information to a user plane function network element corresponding to the wireless access network to be detected through a session creation request message;

Or, the link detection indication information is sent to a user plane function network element corresponding to the radio access network to be detected through a session modification request message.

Optionally, when the network device to be detected includes a user plane function network element to be detected, and the link detection control information includes link detection indication information, the sending unit 703 is specifically configured to:

The link detection indication information is sent to the radio access network corresponding to the user plane function network element to be detected through a communication protocol message.

Optionally, the sending unit 703 is specifically configured to:

The link detection indication information is sent to the access management function network element, so that the access management function network element sends the link detection indication information to the radio access network corresponding to the user plane function network element to be detected through a communication protocol message.

Through the introduction of the above embodiments, it can be seen that a link detection device provided by the embodiment of the present application is a network device to be detected that needs to be detected by the session management function and sends the corresponding link control information to the detection device corresponding to the network device to be detected. That is, the link detection process is managed by the session management function in a coordinated manner, so that the detection device does not need to perform link detection on each corresponding device to be detected at regular intervals, thereby reducing the resource occupation of the detection device during link detection, thereby improving the network element efficiency during link detection.

The embodiment of the present application also provides a computer device, including: a memory, a processor, and a bus system;

Wherein, the memory is used to store programs;

The processor is used to execute the program in the memory to implement any one of the link detection methods described above;

The bus system is used to connect the memory and the processor so that the memory and the processor can communicate with each other.

An embodiment of the present application also provides a computer-readable storage medium storing instructions, which, when executed on a computer, enables the computer to execute a link detection method as described above.

Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A method of link detection, applied to a session management function network element, the method comprising:

Determining network equipment to be detected;

Generating link detection control information according to the network equipment to be detected;

and sending the link detection control information to detection equipment corresponding to the network equipment to be detected, so that the detection equipment can carry out link detection on the network equipment to be detected according to the link detection control information.

2. Method according to claim 1, characterized in that the network device to be detected comprises a radio access network to be detected and/or a user plane function network element to be detected; when the network equipment to be detected comprises the wireless access network to be detected, the detection equipment comprises a user plane function network element corresponding to the wireless access network to be detected; when the network equipment to be detected comprises a user plane function network element to be detected, the detection equipment comprises a wireless access network corresponding to the user plane function network element to be detected.

3. The method according to claim 2, wherein the link detection control information includes link detection address information and/or link detection indication information, the link detection address information including address information of the network device to be detected, the link detection indication information being used to indicate whether the detection device performs link detection.

4. The method according to claim 3, wherein when the network device to be detected includes a radio access network to be detected and the link detection control information includes link detection address information, the transmitting the link detection control information to a detection device corresponding to the network device to be detected includes:

transmitting the link detection address information to a user plane function network element corresponding to the wireless access network to be detected through a coupling establishment request message;

or, the link detection address information is sent to the user plane function network element corresponding to the wireless access network to be detected through a coupling establishment response message;

Or, the link detection address information is sent to the user plane function network element corresponding to the wireless access network to be detected through a coupling update request message;

or, the link detection address information is sent to the user plane function network element corresponding to the wireless access network to be detected through a coupling update response message.

5. The method according to claim 3, wherein when the network device to be detected includes a radio access network to be detected and the link detection control information includes link detection indication information, the transmitting the link detection control information to a detection device corresponding to the network device to be detected includes:

Transmitting the link detection indication information to a user plane function network element corresponding to the wireless access network to be detected through a session creation request message;

or, the link detection indication information is sent to the user plane function network element corresponding to the radio access network to be detected through a session modification request message.

6. The method according to claim 3, wherein when the network device to be detected includes a user plane function network element to be detected and the link detection control information includes link detection indication information, the sending the link detection control information to a detection device corresponding to the network device to be detected includes:

and sending the link detection indication information to the wireless access network corresponding to the user plane function network element to be detected through a communication protocol message.

7. The method according to claim 6, wherein sending the link detection indication information to the radio access network corresponding to the to-be-detected user plane function network element through a communication protocol message comprises:

And sending the link detection indication information to an access management function network element so that the access management function network element can send the link detection indication information to the wireless access network corresponding to the user plane function network element to be detected through a communication protocol message.

8. A link detection apparatus, wherein the link detection apparatus is applied to a session management function network element, the apparatus comprising:

a determining unit, configured to determine a network device to be detected;

a generating unit, configured to generate link detection control information according to the network device to be detected;

and the sending unit is used for sending the link detection control information to detection equipment corresponding to the network equipment to be detected, so that the detection equipment can carry out link detection on the network equipment to be detected according to the link detection control information.

9. A computer device, comprising: a memory, a processor, and a bus system;

wherein the memory is used for storing programs;

The processor being adapted to execute a program in the memory to implement the method of any one of claims 1 to 7;

The bus system is used for connecting the memory and the processor so as to enable the memory and the processor to communicate.

10. A computer readable storage medium storing instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 7.