WO2024027217A1

WO2024027217A1 - Time-sensitive implementation method and system for virtualized core network

Info

Publication number: WO2024027217A1
Application number: PCT/CN2023/090278
Authority: WO
Inventors: 卢华; 章文飞; 段雪飞; 邓永平; 段宜宾
Original assignee: 广东省新一代通信与网络创新研究院
Priority date: 2022-08-02
Filing date: 2023-04-24
Publication date: 2024-02-08
Also published as: CN114978910A; CN114978910B

Abstract

Disclosed is a time-sensitive implementation method for a virtualized core network. A plurality of virtualized service network elements of a core network comprise backup service network elements. The method comprises: in response to interaction exception information between a first service network element and a second service network element, obtaining registration request information of the first service network element and an intermediate service network element by means of a network policy control module; generating a reliable communication policy on the basis of the registration request information; and implementing reliable service communication between the first service network element and a backup second service network element by means of the reliable communication policy. Therefore, low latency of a control plane message between service network elements can be guaranteed, thereby preventing a service exception caused by interaction timeout between the service network elements; and in addition, the sending and receiving of the control plane message are not affected by changes in the throughput of a forwarding plane, thus preventing a service exception caused by the loss of the control plane message due to excessively large throughput of the forwarding plane.

Description

A time-sensitive implementation method and system for virtualized core network

Technical field

The present invention relates to the field of communication technology, and in particular, to a time-sensitive implementation method and system for a virtualized core network.

Background technique

After the communication equipment is virtualized, the tightly coupled modules in the original dedicated equipment are transformed into independent virtual machines. These virtual machines are deployed uniformly through the virtualization cloud platform, and are connected and forwarded through the internal virtual network built by the cloud platform. Among them, the external communication paths of the virtual machine mainly include: the virtual machine is bound to the physical network card PF, that is, the network card pass-through mode; the network card is virtualized to the VF, and the virtual machine is bound to the VF, that is, the SR-IOV mode; the host machine is installed with the vSwitch soft switching function , connect each port of the virtual machine to the vSwitch.

However, the current virtual machine has the following problems during operation: When both the control plane and the forwarding plane of the virtual machine use vSwitch soft switching, the vSwitch in this method needs to occupy additional server vCPU resources, and the overall machine performance is affected by the vSwitch, and the control The plane and forwarding plane are only logically isolated through VLAN. When the throughput of the forwarding plane is large, it will affect the packets of the control plane. Similarly, when using SR-IOV mode, the control plane and forwarding plane of the virtual machine are bound separately. The physical network card and the virtual network card VF share the bandwidth capabilities of the physical network card. When the forwarding plane throughput is too large, it will also affect the control plane packets. It can be seen that the above methods can easily lead to packet delays, packet loss, business failures and other problems that are not conducive to the normal operation of the virtual machine.

Contents of the invention

The technical problem to be solved by the present invention is to provide a time-sensitive implementation method and system for a virtualized core network, which can make the virtual machine control plane messages not affected by the forwarding plane throughput and ensure the low delay of the control plane messages. , so that the data synchronization between the control plane and the forwarding plane is complete.

In order to solve the above technical problems, the first aspect of the present invention discloses a time-sensitive implementation method of a virtualized core network. Multiple virtualized service network elements of the core network all include backup service network elements. The method includes: In response to the interaction abnormal information between the first service network element and the second service network element, obtain the registration request information of the first service network element and the intermediate service network element through the network policy control module; generate a reliable communication policy based on the registration request information; Reliable service communication between the first service network element and the backup second service network element is achieved through the reliable communication strategy.

In some embodiments, a reliable communication strategy is generated based on the registration request information, wherein the reliable communication strategy includes: obtaining the interaction information of the first service network element and the backup second service network element address through the registration request information; The interaction information of the first service network element is sent to the backup second service network element based on the backup second service network element address; the backup second service network element searches whether the context information of the target user exists locally based on the interaction information; if The backup second service network element searches for the local context information of the target user, and then executes the first service network element and the backup second service. Reliable business communication of network elements.

In some embodiments, the intermediate service network element includes a remote database, and generates a reliable communication strategy based on the registration request information, wherein the reliable communication strategy includes: if the backup second service network element searches for the context information of the target user that does not exist locally , obtain the address of the remote database and the address of the standby remote database through the registration request information; the first service network element issues a context information request to the remote database or the standby remote database based on the address of the remote database and the address of the standby remote database; The remote database or backup remote database sends context information to the backup second service network element; reliable service communication between the first service network element and the backup second service network element is performed through the context information.

In some embodiments, the intermediate service network element includes a unified data management module, and generates a reliable communication strategy based on the registration request information, wherein the reliable communication strategy includes: obtaining the address of the unified data management module through the registration request information; The backup second service network element sends registration notification information and subscription information to the unified data management module based on the address of the unified data management module; and executes the first service network element and the backup second service network element through the registration notification information and the subscription information. Reliable business communication for business network elements.

In some embodiments, the intermediate service network element includes a user port, and a reliable communication strategy is generated based on the registration request information, wherein the reliable communication strategy includes: obtaining the address of the user port through the registration request information; and backup second service The network element delivers takeover notification information to the user port based on the address of the user port; and performs reliable service communication between the first service network element and the backup second service network element through the takeover notification information.

In some embodiments, the method further includes: delivering the reliable communication policy to a time-sensitive switching network card device configured on the server; and using the time-sensitive switching network card device to construct a system for connecting the first service network element and the backup network element. Reliable service communication link of the second service network element.

In some implementations, the first service network element is an authentication management module, and the second service network element is a service management module.

According to a second aspect of the present invention, a time-sensitive system for virtualizing a core network is disclosed. Multiple virtualized service network elements of the core network all include backup service network elements. The system includes: a network policy control module, For responding to the interaction abnormal information between the first service network element and the second service network element, obtaining the registration request information of the first service network element and the intermediate service network element, and generating a reliable communication policy based on the registration request information; through the The reliable communication strategy realizes reliable service communication between the first service network element and the backup second service network element.

In some embodiments, the system further includes: a time-sensitive switching network card device configured on the server, used to obtain the reliable communication policy, and construct a reliable service for connecting the first service network element and the backup second service network element. communication link.

According to a third aspect of the present invention, a time-sensitive device for a virtualized core network is disclosed. The device includes: a memory storing executable program code; a processor coupled to the memory; the processor calls the memory The executable program code stored in executes the time-sensitive implementation method of the virtualized core network as mentioned above.

Compared with the prior art, the beneficial effects of the present invention are:

The implementation of the present invention can ensure the low delay of control plane messages between service network elements and avoid service anomalies caused by interaction timeout between service network elements; moreover, the sending and receiving of control plane messages is not affected by changes in the throughput of the forwarding plane and avoids the risk of forwarding errors due to forwarding plane throughput changes. Excessive plane throughput leads to loss of control plane packets, resulting in service anomalies. In addition, through the service network element of the present invention, that is, the reliable sending and receiving of messages on the control plane, the occurrence of dual-master service network elements in which control plane messages are lost or delayed due to heartbeat detection or other detection methods is avoided. phenomenon occurs, resulting in system anomalies, thereby ensuring the synchronization integrity of control plane and forwarding plane entry data, and avoiding various system and business anomalies due to incomplete entries.

Description of the drawings

Figure 1 is a schematic flow chart of a time-sensitive implementation method for a virtualized core network disclosed in an embodiment of the present invention;

Figure 2 is a flow chart of an existing uplink message processing method after an abnormality of a service network element disclosed in an embodiment of the present invention;

Figure 3 is a flow chart of an uplink message processing method after a time-sensitive service network element of a virtualized core network is abnormal disclosed in an embodiment of the present invention;

Figure 4 is a schematic diagram of a time-sensitive system of a virtualized core network disclosed in an embodiment of the present invention;

Figure 5 is a schematic structural diagram of a time-sensitive device of a virtualized core network disclosed in an embodiment of the present invention.

Detailed ways

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention. Not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

The terms "comprising" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or modules and need not be limited to the clear Those steps or modules listed may instead include other steps or modules not expressly listed or inherent to the process, method, product or apparatus.

Embodiments of the present invention disclose a time-sensitive implementation method and system for a virtualized core network, which can ensure low latency of control plane messages between service network elements and avoid service anomalies caused by interaction timeout between service network elements; and, The sending and receiving of control plane messages is not affected by changes in the throughput of the forwarding plane, avoiding service abnormalities caused by loss of control plane messages due to excessive forwarding plane throughput. In addition, through the service network element of the present invention, that is, the reliable sending and receiving of messages on the control plane, the occurrence of dual-master service network elements in which control plane messages are lost or delayed due to heartbeat detection or other detection methods is avoided. phenomenon occurs, resulting in system anomalies, thereby ensuring the synchronization integrity of control plane and forwarding plane entry data, and avoiding various system and business anomalies due to incomplete entries.

In the following embodiments, in order to facilitate unified expression, UE is represented as a user terminal, (R)AN is represented as a wireless access network, DN is represented as a data network, SMF is represented as (Service Management Function--Service Management Function), and AMF is represented is (AuthenticationManagementFunction), authentication management function), NRF is represented by (Network Repository Function--network storage function), UDM is represented by (Unified Data Management--unified data management), UPF is represented by (User Port Function--user port function ), the Redis database is represented as a remote database. Among them, in the 5G core network, virtualized service network elements are connected through virtual networks.

Further, in the present invention, in order to enhance the reliability of the 5G core network, each virtualized service network element will operate in an active and backup mode, that is, two identical virtualized service network elements will operate at the same time, that is, the service network element itself will (active) and standby service network elements (standby), thus forming a mutually active and standby mode of operation, that is, two mutually virtualized service network elements that back up each other can take over the same user and process the control plane information of the same user.

Please refer to FIG. 1 , which is a schematic flowchart of a time-sensitive implementation method for a virtualized core network disclosed in an embodiment of the present invention. Among them, the time-sensitive implementation method of the virtualized core network can be applied to the 5G core network system. In addition, all virtualization devices that support active and backup protection can realize the invention's discovery of abnormalities, registration of interoperable network element information, and configuration of reliable communication. All other methods belong to the scope of protection and application of this embodiment, and the embodiments of the invention do not limit the application of this method. As shown in Figure 1, the time-sensitive implementation method of the virtualized core network can include the following operations:

101. In response to the abnormal interaction information between the first service network element and the second service network element, obtain the registration request information of the first service network element and the intermediate service network element through the network policy control module.

In order to explain the implementation process of the present invention more clearly and in detail, in this embodiment, the first service network element is the authentication management module, that is, AMF, and the second service network element is the service management module SMF. In this embodiment, the main purpose is to process the abnormal information between two interacting service network elements. Therefore, it is first necessary to respond to the interactive abnormal information between the first service network element and the second service network element. For the first The abnormal interaction information between the service network element and the second service network element can be manifested as a sudden power outage or network failure after the active SMF has been working for a period of time. Then the response process can be implemented as follows: AMF learns that the active SMF is abnormal, specifically including: the network storage function NRF discovers that the heartbeat between the active SMF and the active SMF is abnormal. At this time, NRF will think that the active SMF is abnormal, because in the previous session When created, AMF has already subscribed to the information of the active SMF. Therefore, after NRF discovers that the active SMF is abnormal, it will send a subscription notification message to AMF. The SMF that notifies AMF that an exception has occurred will obtain the information of the first service network element and the second service network element. Interaction exception information.

Further, the AMF learning that the active SMF is abnormal may also include: the HTTP module of the AMF network element itself discovers that the HTTP long link between itself and the active SMF is abnormal. This connection is after AMF successfully discovers SMF through NRF, then AMF will establish HTTP persistent connections with SMFs under the same Set. When there is a problem with the persistent connection between AMF and the main SMF, AMF can Knowing this at once helps AMF select a backup SMF as quickly as possible to continue providing session services.

In addition, the user port function UPF can also learn about the active SMF exception, including: The network storage function NRF discovers that the heartbeat between the active SMF and the active SMF is abnormal. At this time, the NRF will think that the active SMF is abnormal. Since UPF has subscribed to the active SMF information when the previous session was created, NRF discovers that the active SMF is abnormal. A subscription notification message will be sent to the UPF, and the SMF, which notifies the AMF that an exception has occurred, has obtained the interaction exception information between the first service network element and the second service network element.

Further, the UPF learning of the active SMF abnormality may also include: UPF may also perform heartbeat message detection through PFCP (Packet Forwarding Control Protocol) between SMF and UPF. After the heartbeat of the PFCP link between them is abnormal, the UPF considers that the SMF network element is abnormal, that is, it obtains the abnormal interaction information between the first service network element and the second service network element.

After obtaining the interaction exception information between the first service network element and the second service network element, the registration request information of the first service network element and the intermediate service network element is obtained through the network policy control module. Among them, the network policy controller, that is, NPCF, can be used by service network elements to register requests for key information communication guarantee resources. The registration request information specifically includes the source and destination addresses, port numbers, network element types, bandwidth requirements and other information of each service network element. This embodiment does not limit the content of the registration request information.

102. Generate a reliable communication strategy based on the registration request information.

The reliable communication strategy includes: obtaining the interaction information of the first service network element and the backup second service network element address through the registration request information, where the interaction information includes uplink information and downlink information; Based on the address of the standby second service network element, the standby second service network element is sent to the standby second service network element; the standby second service network element searches for the local context information of the target user based on the interaction information; if the standby second service network element searches for the local context information of the target user information, then reliable service communication between the first service network element and the backup second service network element is performed.

Further, the intermediate service network element includes a remote database, and generates a reliable communication strategy based on the registration request information. The reliable communication strategy includes: if the backup second service network element searches for the context information of the target user that does not exist locally, obtains the remote communication strategy through the registration request information. The address of the database and the address of the standby remote database; the first service network element issues a context information request to the remote database or the standby remote database based on the address of the remote database and the address of the standby remote database; the remote database or the standby remote database sends the context information to A backup second service network element; performs reliable service communication between the first service network element and the backup second service network element through context information.

Further, the intermediate service network element includes a unified data management module, and generates a reliable communication strategy based on the registration request information, where the reliable communication strategy includes: obtaining the address of the unified data management module through the registration request information; the backup second service network element based on the unified data The address of the management module sends registration notification information and subscription information to the unified data management module; reliable service communication between the first service network element and the standby second service network element is performed through the registration notification information and the subscription information.

Further, the intermediate service network element includes a user port, and generates a reliable communication strategy based on the registration request information. The reliable communication strategy includes: obtaining the address of the user port through the registration request information; and the backup second service network element sends the user port address to the user based on the user port address. The port delivers takeover notification information; reliable service communication between the first service network element and the backup second service network element is performed through the takeover notification information.

Specifically, in order to compare the significant differences between the present application and the prior art in a more refined manner, uplink information is used as an example object of interactive information, and a comparative example is introduced for detailed elaboration. As shown in Figure 2, it is a flow chart of uplink information processing after an existing service network element is abnormal.

As shown in ① in Figure 2, the process of uplink information in the first service network element AMF needs to be processed by the second service network element SMF. At this time, the AMF refers to the above exception acquisition method through the NRF or HTTP module to learn that the primary user is the first service network element. If the service network element SMF is abnormal, then the backup second service network element SMF under the same Set is selected and the uplink information is sent to the backup SMF.

As shown in ② in Figure 2, after receiving the uplink information, the backup second service network element SMF first searches whether there is the context of the user locally. If so, continue the normal business process. If not, first request the main Redis database to obtain context information. If the primary Redis is unavailable, a request context request is sent to the backup Redis database. However, if both the active and standby Redis are unavailable, the overall process fails.

As shown in ③ in Figure 2, after the active or standby Redis database finds the relevant user context information, it will be returned to the standby SMF, and the standby SMF obtains the user context information. However, if there is no user context information on the context of both the active Redis database and the standby Redis database, the entire process fails.

As shown in ④ in Figure 2, the standby second service network element SMF sends a registration request message to the UDM, notifying the UDM of the SMF information served by the current user. In addition, the backup SMF also needs to send a subscription message to the UDM. If the user subscription information saved on the UDM subsequently changes, the backup SMF will be notified in a timely manner.

As shown in ⑤ in Figure 2, UDM will return the results of registration and subscription.

As shown in ⑥ in Figure 2, the backup second SMF updates the session message to the UPF, notifying the UPF that the backup SMF will take over the session process.

As shown in ⑦ in Figure 2, UPF will return the update result, and the entire uplink information process ends.

It is obvious from this comparison that when an abnormality occurs in the virtual network: in step ② of Figure 2, the backup second service network element SMF may also be unreachable with the main Radis and the backup Radis, causing the process to fail and causing the service to be suspended. In step ④ of Figure 2, the communication between the standby SMF and the UDM is unreachable, causing the registration and subscription requests to fail, causing the service to be suspended. In step ⑥ of Figure 2, the communication between the standby SMF and the UPF is unreachable, and the session message update fails, causing the service to be suspended.

In addition, when the virtual network is intermittent, the table entries delivered by the standby SMF to the UPF may be partially lost, causing unpredictable business abnormalities.

In order to avoid the above situation, the present invention generates a reliable communication policy based on the registration request information, as shown in Figure 3, which is a flow chart of uplink message processing after a time-sensitive service network element of the virtualized core network is abnormal.

In Figure 3, through the method of this embodiment, the NPCF network policy controller can be represented as a reliable communication link with other business network elements that is guaranteed by a time-sensitive network card. The registration request information carried in the HiLinkReq message includes: source address, destination address, source port, destination port, source network element type, destination network element type, bandwidth and other information. specifically:

As shown in ① in Figure 3, the first service network element AMF has uplink information and requires the second service network element SMF processing. At this time, the first service network element AMF learns that the active SMF is abnormal (the communication link is disconnected or the network element is down) through the NRF or HTTP module, selects the backup SMF under the same Set, and reports it to the network policy controller NPCF sends a request for a reliable communication link application.

As shown in ② in Figure 3, the uplink information is sent to the backup second service network element SMF. After receiving the uplink information, the standby second service network element SMF first searches whether there is a context of the user locally. If there is, continue to process the business process normally, if not, proceed to the following step ③.

As shown in ③ in Figure 3, the second service network element SMF needs to interact with the main Redis database, backup Redis database, UDM, and UPF, so it can send requests for reliable communication link applications to the network policy controller NPCF respectively.

As shown in ④ in Figure 3, the first service network element SMF first requests the active Redis to obtain context information. If the primary Redis is unavailable, a request context request is sent to the backup Redis.

As shown in ⑤ in Figure 3, the active or standby Redis finds the relevant user context information and returns it to the standby SMF. The standby second service network element SMF obtains the user context information.

As shown in ⑥ in Figure 3, the standby second service network element SMF sends a registration request message to the UDM, notifying the UDM of the SMF information served by the current user. The standby second service network element SMF also needs to send a subscription message to the UDM. If the user subscription information saved on the UDM subsequently changes, the standby SMF will be notified in a timely manner.

As shown in ⑦ in Figure 3, UDM returns the results of registration and subscription.

As shown in ⑧ in Figure 3, the standby second service network element SMF updates the session message to the UPF, notifying the UPF that the standby second service network element SMF takes over the session process.

As shown in ⑨ in Figure 3, UPF returns the update result, and the entire uplink information process ends.

It can be seen that during the uplink information exchange process in this embodiment, the virtual network uses shared hardware resources and adopts a best-effort forwarding mode, which is not reliable communication. When heartbeat detection of the active service network element fails, it is most likely due to congestion or anomalies in the virtual network that cause detection packets to be lost. Therefore, before interacting with backup service network elements, apply for reliable communication link resources first to ensure reliable communication of control information between network elements, avoid user service failures caused by sudden congestion and abnormalities in the virtual network, and improve user experience. quality.

103. Realize reliable service communication between the first service network element and the backup second service network element through a reliable communication strategy.

Therefore, through the above reliable communication policy execution, reliable service communication between the first service network element and the backup second service network element can be achieved. In other preferred embodiments, the reliable communication policy is also delivered to a time-sensitive switching network card device configured on the server, and a reliable service for connecting the first service network element and the backup second service network element is constructed through the time-sensitive switching network card device. communication link. This time-sensitive switching network card device can replace the original server PCIE network card. The network card has the capabilities of frame preemption and traffic shaping of time-sensitive network technology.

It should be noted that although the upstream process is used as the description object in this embodiment, the downlink process using this embodiment also falls within the protection scope of the present invention. Specifically, the uplink process is initiated by the user terminal (UE) to the service network element of the core network; the downlink process is initiated by the core network The service network element initiates to the user (UE), and the implementation of the downlink process is a similar process implemented by the uplink process in this embodiment, which will not be described in detail here.

Please refer to FIG. 4 , which is a schematic diagram of a time-sensitive system of a virtualized core network disclosed in an embodiment of the present invention. Among them, the time-sensitive system of the virtualized core network can be applied to the 5G core network system. Multiple virtualized service network elements of the core network include backup service network elements. As shown in Figure 4, the time-sensitive implementation system of the virtualized core network may include:

Network policy control module 1 and time-sensitive switching network card device 2. The network policy control module 1 is configured to respond to the abnormal interaction information between the first service network element and the second service network element, obtain the registration request information of the first service network element and the intermediate service network element, and generate a reliable communication policy based on the registration request information. , realizing reliable service communication between the first service network element and the backup second service network element through a reliable communication strategy. The network policy controller, that is, NPCF, can be used by service network elements to register requests for key information communication guarantee resources. The registration request information specifically includes the source and destination addresses, port numbers, network element types, bandwidth requirements and other information of each service network element. This embodiment does not limit the content of the registration request information.

The time-sensitive switching network card device 2 is configured on the server and is used to obtain a reliable communication policy and build a reliable service communication link for connecting the first service network element and the backup second service network element. This time-sensitive switching network card device can replace the original server PCIE network card. The network card has the capabilities of frame preemption and traffic shaping of time-sensitive network technology.

For the interaction mode between the network policy control module 1 and the time-sensitive switching network card device 2 and the service network element, reference can be made to the description of the above method, and will not be described again here.

Please refer to Figure 5. Figure 5 is a schematic structural diagram of a time-sensitive device for a virtualized core network disclosed in an embodiment of the present invention. Among them, the time-sensitive device of the virtualized core network described in Figure 5 can be applied in the 5G core network system, and the embodiment of the present invention does not limit the application system of the time-sensitive device of the virtualized core network. As shown in Figure 5, the device may include:

Memory 501 storing executable program code;

processor 502 coupled to memory 501;

The processor 502 calls the executable program code stored in the memory 501 for executing the described time-sensitive implementation method of a virtualized core network.

An embodiment of the present invention discloses a computer-readable storage medium that stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the described time-sensitive implementation method of a virtualized core network.

An embodiment of the present invention discloses a computer program product. The computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause the computer to execute the described virtualization core network time. Sensitive implementation method.

The embodiments described above are only illustrative, in which the modules described as separate components may or may not be physically separated. The components shown as modules may or may not be physical modules, that is, they may be located in a place, or can be distributed to multiple network modules. You can select some or all of the modules according to actual needs to implement this implementation. The purpose of the example program. Persons of ordinary skill in the art can understand and implement the method without any creative effort.

Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions can be embodied in the form of software products in essence or in part that contribute to the existing technology. The computer software products can be stored in computer-readable storage media, and the storage media includes read-only memories. (Read-Only Memory, ROM), Random Access Memory (RAM), Programmable Read-only Memory (PROM), Erasable Programmable Read Only Memory (EPROM) ), One-time Programmable Read-Only Memory (OTPROM), Electronically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read -Only Memory (CD-ROM) or other optical disk storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

Finally, it should be noted that the time-sensitive implementation method and system of a virtualized core network disclosed in the embodiments of the present invention are only the preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention. Limitation thereof; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that they can still modify the technical solutions recorded in the foregoing embodiments, or modify some of the technical features. Equivalent substitutions; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

A time-sensitive implementation method for a virtualized core network. Multiple virtualized service network elements of the core network all include standby service network elements. The method is characterized in that the method includes:

In response to the abnormal interaction information between the first service network element and the second service network element, obtain the registration request information of the first service network element and the intermediate service network element through the network policy control module;

Generate a reliable communication policy based on the registration request information;

Send a request for a reliable communication link application;

The second service network element sends a request for a reliable communication link application to the network policy control module respectively;

First apply for reliable communication link resources to ensure reliable communication of control information between network elements;

Obtain a reliable communication strategy and build a reliable service communication link for connecting the first service network element and the backup second service network element;

Reliable service communication between the first service network element and the backup second service network element is achieved through the reliable communication strategy.
The time-sensitive implementation method of a virtualized core network according to claim 1, characterized in that a reliable communication strategy is generated based on the registration request information, wherein the reliable communication strategy includes:

Obtain the interaction information of the first service network element and the backup second service network element address through the registration request information;

Send the interaction information of the first service network element to the backup second service network element based on the backup second service network element address;

The backup second service network element searches whether the context information of the target user exists locally according to the interaction information;

If the backup second service network element searches for the context information of the target user that exists locally, reliable service communication between the first service network element and the backup second service network element is performed.
The time-sensitive implementation method of a virtualized core network according to claim 2, characterized in that the intermediate service network element includes a remote database, and a reliable communication strategy is generated based on the registration request information, wherein the reliable communication strategy includes:

If the backup second service network element searches for the context information of the target user that does not exist locally, obtain the address of the remote database and the address of the backup remote database through the registration request information;

The first service network element issues a context information request to the remote database or the backup remote database based on the address of the remote database and the address of the backup remote database;

The remote database or the backup remote database sends the context information to the backup second service network element;

Reliable service communication between the first service network element and the backup second service network element is performed through the context information.
The time-sensitive implementation method of a virtualized core network according to claim 3, characterized by The intermediate service network element includes a unified data management module that generates a reliable communication strategy based on the registration request information, wherein the reliable communication strategy includes:

Obtain the address of the unified data management module through the registration request information;

The backup second service network element delivers registration notification information and subscription information to the unified data management module based on the address of the unified data management module;

Reliable service communication between the first service network element and the standby second service network element is performed through the registration notification information and the subscription information.
The time-sensitive implementation method of a virtualized core network according to claim 4, characterized in that the intermediate service network element includes a user port, and a reliable communication strategy is generated based on the registration request information, wherein the reliable communication strategy includes:

Obtain the address of the user port through the registration request information;

The backup second service network element delivers takeover notification information to the user port based on the address of the user port;

Reliable service communication between the first service network element and the standby second service network element is performed through the takeover notification information.
The time-sensitive implementation method of a virtualized core network according to any one of claims 1 to 5, characterized in that the method further includes:

Deliver the reliable communication policy to the time-sensitive switching network card device configured on the server;

A reliable service communication link for connecting the first service network element and the backup second service network element is constructed through the time-sensitive switching network card device.
The time-sensitive implementation method of a virtualized core network according to claim 6, characterized in that the first service network element is an authentication management module, and the second service network element is a service management module.
A time-sensitive system for a virtualized core network. Multiple virtualized service network elements of the core network all include backup service network elements. The system is characterized in that the system includes:

The network policy control module is configured to respond to the abnormal interaction information between the first service network element and the second service network element, obtain the registration request information of the first service network element and the intermediate service network element, and generate reliable communication strategy;

Send a request for a reliable communication link application;

The second service network element sends a request for a reliable communication link application to the network policy control module respectively;

First apply for reliable communication link resources to ensure reliable communication of control information between network elements;

Obtain a reliable communication strategy and build a reliable service communication link for connecting the first service network element and the backup second service network element;

Reliable service communication between the first service network element and the backup second service network element is achieved through the reliable communication strategy.
According to the time-sensitive system of a virtualized core network according to claim 8, multiple virtualized service network elements of the core network all include backup service network elements, characterized in that the system further includes:

A time-sensitive switching network card device configured on the server is used to obtain the reliable communication policy and construct a reliable service communication link for connecting the first service network element and the backup second service network element.
A time-sensitive device for a virtualized core network, characterized in that the device includes:

Memory that stores executable program code;

a processor coupled to said memory;

The processor calls the executable program code stored in the memory to execute the time-sensitive implementation method of a virtualized core network according to any one of claims 1 to 7.