CN116095722A

CN116095722A - Network element management method, device, related equipment and storage medium

Info

Publication number: CN116095722A
Application number: CN202111314986.6A
Authority: CN
Inventors: 周欣; 徐要强; 黄震宁; 李爱华
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2023-05-09

Abstract

The application discloses a network element management method, a network element management device, a first network element, a second network element and a storage medium. The method comprises the following steps: the first network element selects one of at least two second network elements capable of serving the first user group as a main network element of the first user group, and other second network elements except the selected second network element in the at least two second network elements are used as standby network elements.

Description

Network element management method, device, related equipment and storage medium

Technical Field

The present invention relates to the field of communications, and in particular, to a network element management method, device, related apparatus, and storage medium.

Background

The fifth generation mobile communication technology (5G) network introduces a new Service (SBA) architecture, and network element selection is mainly implemented through network storage function (NRF) discovery or local static configuration, and when the service is performed, the network element can be selected based on service factors such as a Data Network Name (DNN) or a slice of the user, a location of the user and the like, and combining factors of equipment capabilities such as network element priority, weight and the like.

In the related art, there is a scenario that one network element is responsible for session related processing of all members of one user group, however, in the related art, a disaster recovery scheme of equipment based on the user group is lacking, reliability and flexibility of the network are poor, and user experience is affected.

Disclosure of Invention

In order to solve the related technical problems, embodiments of the present application provide a network element management method, a device, a related device, and a storage medium.

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

the embodiment of the application provides a network element management method, which is applied to a first network element and comprises the following steps:

one of at least two second network elements capable of serving the first user group is selected as a main network element of the first user group, and other second network elements except the selected second network element in the at least two second network elements are used as standby network elements.

In the above scheme, the method further comprises:

and storing first information, wherein the first information characterizes the main and standby states of the at least two second network elements.

In the above scheme, when the second network element serving as the primary network element of the first user group fails, one second network element serving as a standby network element capable of serving the first user group is selected as the primary network element of the first user group, and the other second network elements except the selected second network element serving as the primary network element are selected as the standby network elements of the first user group.

In the above scheme, the method further comprises:

And determining the at least two second network elements.

In the above solution, the second network element serving as the primary network element of the first user group is different from the second network element serving as the primary network element of the second user group.

In the above solution, the selecting one of the at least two second network elements capable of serving the first user group as the active network element of the first user group includes:

transmitting second information to each of the at least two second network elements, the second information indicating a state of a primary network element subscribed to the first user group;

receiving third information sent by one second network element in the at least two second network elements, wherein the third information characterizes that the second network element sending the third information is a main network element of the first user group;

and taking the second network element for sending the third information as a main network element of the first user group.

In the above scheme, the method further comprises:

determining that a first terminal belongs to the first user group and is a terminal accessed by a first user group;

and selecting a second network element for sending the third information from at least two second network elements to establish a first session for the first terminal.

In the above solution, the determining that the first terminal is the terminal accessed by the first user group includes:

and before the third information is determined to be received, the stored first information characterizes that the main standby states of the at least two second network elements are standby states.

In the above scheme, the method further comprises:

after receiving the third information, receiving fourth information sent by another second network element in the at least two second network elements, wherein the fourth information characterizes the another second network element as a main network element; a second terminal establishes a second session with the other second network element, wherein the second terminal belongs to the first user group;

and sending fifth information to the other second network element, wherein the fifth information indicates that the second session is released.

In the above scheme, the method further comprises:

determining a second network element fault for transmitting the third information;

receiving sixth information sent by another second network element in the at least two second network elements, wherein the sixth information characterizes the another second network element as a main network element;

and taking the other second network element as a main network element of the first user group.

Transmitting seventh information to a third network element, wherein the seventh information indicates a primary second network element subscribed to the first user group;

and receiving eighth information sent by the third network element, wherein the eighth information indicates the primary second network element of the first user group.

actively selecting one of the at least two second network elements as a main network element of the first user group;

and transmitting ninth information to another first network element, wherein the ninth information indicates the main and standby states of the at least two second network elements of the first user group.

In the above scheme, the method further comprises:

determining that a third terminal belongs to the first user group;

and selecting a second network element serving as a main network element to establish a third session for the third terminal.

The embodiment of the application also provides a network element management method, which is applied to a second network element and comprises the following steps:

receiving subscription information sent by a first network element, wherein the subscription information indicates the state of subscribing a first user group main network element; the second network element is one of at least two second network elements that can serve the first user group;

When the terminal to be served is determined to be the first terminal of the first user group, reply information aiming at the subscription information is sent to the first network element, the reply information characterizes the second network element as a main network element, and the reply information is used for the first network element to manage the main and standby states of at least two second network elements of the first user group.

In the above scheme, the second network element supports subscription of the active network element information in the user group to the first network element.

The embodiment of the application also provides a network element management device, which comprises:

and the management unit is used for selecting one of at least two second network elements which can serve the first user group as a main network element of the first user group, and taking other second network elements except the selected second network element of the at least two second network elements as standby network elements.

the receiving unit is used for receiving subscription information sent by the first network element, wherein the subscription information indicates the state of subscribing the first user group main network element; the second network element is one of at least two second network elements that can serve the first user group;

And the processing unit is used for sending reply information aiming at the subscription information to the first network element when the terminal to be served is the first terminal of the first user group, wherein the reply information characterizes the second network element as a main network element, and the reply information is used for the first network element to manage the main and standby states of at least two second network elements of the first user group.

The embodiment of the application also provides a first network element, which comprises: a first communication interface and a first processor; wherein, the liquid crystal display device comprises a liquid crystal display device,

the first processor is configured to:

The embodiment of the application also provides a second network element, which comprises:

the second communication interface is used for receiving subscription information sent by the first network element, wherein the subscription information indicates the state of subscribing the first user group main network element; the second network element is one of at least two second network elements that can serve the first user group;

and the second processor is used for sending reply information aiming at the subscription information to the first network element when the terminal to be served is determined to be the first terminal of the first user group, wherein the reply information characterizes the second network element as a main network element, and the reply information is used for the first network element to manage the main and standby states of at least two second network elements of the first user group.

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

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

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

and the second processor is used for executing any step of the method at the second network element side when the computer program is run.

The embodiment of the application further provides a storage medium, on which a computer program is stored, where the computer program when executed by a processor implements the steps of any method on the first network element side or implements the steps of any method on the second network element side.

The network element management method, the device, the related equipment and the storage medium provided by the embodiment of the application, wherein the first network element selects one of at least two second network elements capable of serving a first user group as a main network element of the first user group, and other second network elements except the selected second network element in the at least two second network elements are used as standby network elements. According to the scheme provided by the embodiment of the application, the second network element is provided for the same user group, the first network element determines the main and standby states of the second network element, so that the second network element can be selected for the user group user according to the determined main and standby states of the second network element, the first network element determines the main and standby states of the second network element, so that the second network element for selecting service for the user group user according to the determined main and standby states of the second network element, fault disaster tolerance is realized, network reliability and flexibility are improved, and user experience is improved.

Drawings

FIG. 1 is a schematic diagram of a 5G LAN technology application scenario;

FIG. 2 is a schematic diagram of a business flow of a 5G LAN technical scheme in the related art;

fig. 3 is a flow chart of a method for network element management according to an embodiment of the present application;

fig. 4 is a flowchart of another method for network element management according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a network element management device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of another network element management device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a first network element according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a second network element according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a network element management system according to an embodiment of the present application.

Detailed Description

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

5G is a new information infrastructure that has motivated innovation and innovation in many industries, and in business scenarios towards enterprises, factories, houses and offices, there is a need for 5G networks to provide services with Local Area Networks (LANs) and similar Virtual Private Networks (VPNs). In the related art, a 5G LAN technology is introduced, as shown in fig. 1, where the 5G LAN technology constructs a private network for enterprises, which can be flexibly and conveniently managed, that is, by constructing a "group" for terminals of the enterprises, the terminals in the group can perform point-to-point and point-to-multipoint communications without going around a service server.

On the other hand, under the SBA architecture, when a service for a user group is performed, network element selection is required, however, in the related art, there is no disaster recovery scheme of the network element, and reliability of the network is poor, so that user experience is affected.

A typical application scenario is that in 5G LAN technology, a 5G core Network may establish a 5G Virtual Network (VN) group for a terminal of an enterprise, and only one SMF may manage group session information and forwarding policies of all members in a VN group; one VN group may be identified by a VN group identification (e.g. VN group ID), data network name (DNN, data Network Name) information and a network slice identification (e.g. single network slice selection assistance information (S-nsaai, single Network Slice Selection Assistance Information), also referred to as network slice selection assistance information (nsaai, network Slice Selection Assistance Information).

As shown in fig. 2, the service flow of the 5G LAN technical solution includes the following steps:

step 1: signing a 5G VN group for a user;

step 2: when a user is registered, a mobility management function (AMF) acquires subscription information to obtain a VN group, DNN and a network slice identifier to which the user belongs;

step 3: the AMF discovers a Session Management Function (SMF) available for the VN group from a network service storage function (NRF) according to the acquired subscription information, and selects one SMF for the VN group;

Step 4: the AMF initiates a session establishment request to the selected SMF for the user;

step 5: after the SMF receives the request, selecting a User Plane Function (UPF) for the current user;

step 6: the user sends data;

step 7: the UPF sends the data to other users.

As can be seen from the above flow, the SMF needs to manage session information and forwarding policy of all members in the VN group, so as to reduce policy synchronization complexity caused by multiple SMF management, in the related art, only one 5G VN group is supported by a defined 5GLAN technical scheme, that is, only one SMF can manage group session information and forwarding policy of all members in a VN group, so after the SMF for managing the VN group fails, the AMF can drop all users in the VN group, and no SMF is available for members in the VN group, so that communication cannot be continued, service experience is seriously affected, that is, a network element selection scheme in the limited related technology is not realized, a disaster tolerance scheme for SMF selection is lacking in the 5G LAN technology, reliability of a network is poor, and user experience is affected.

Based on this, in various embodiments of the present application, a primary and a secondary second network element are provided for the same user group, and the primary and the secondary states of the second network element are determined by the first network element, so that the second network element can be selected for the user group user according to the determined primary and the secondary states of the second network element.

The scheme provided by the embodiment of the application provides a disaster recovery scheme, improves the reliability of the network and improves the user experience.

An embodiment of the present application provides a network element management method, which is applied to a first network element, as shown in fig. 3, and includes:

step 301: determining at least two second network elements that can serve the first user group;

step 302: and selecting one second network element from the at least two second network elements as a main network element of the first user group, and taking other second network elements except the selected second network element in the at least two second network elements as standby network elements.

In practical application, the first network element may store first information, where the first information characterizes a primary and a standby state of the at least two second network elements.

Wherein at least two second network elements of the first user group, i.e. supported by the first user group, can be served. When the second network element comprises SMFs, each SMF is capable of managing sessions for all terminals in the first user group. Here, each SMF is capable of managing sessions of all terminals in the first user group, which means: each SMF is capable of managing session information and forwarding policies for all members (i.e., terminals) of the first user group.

In an embodiment, the second network element serving as the first user group primary network element and the second network element serving as the second user group primary network element may be different or the same, i.e. the primary second network element belonging to the first user group user and the primary second network element belonging to the second user group user may be different or different.

In practical application, the user group may be a VN group, that is, a 5G VN group, and a group of terminals that use a 5G LAN function of a network to perform communication may be represented by the 5G VN group, and the terminals may perform communication based on multiple forms such as multicast, and unicast. The users of the user group may also be users belonging to the same DNN or network slice. The implementation of how the user groups are partitioned is not limited in the embodiments of the present application.

In practical applications, the terminal may be referred to as a User Equipment (UE) or a user, etc.

In general, the disaster recovery between devices is statically configured, and is generally implemented by using a network element priority, that is, under the condition of the same service capability, a network element with a high priority (i.e., a main network element) is preferentially selected, when the network element with the high priority fails, an existing service and a new online service can use a network element with a low priority, after the network element with the high priority fails, the new service can use the network element with the high priority, and the service accessed to the network element with the low priority still remains on the network element. Based on the static main and standby disaster recovery mode between the current devices, the main and standby network elements bear the service, so that if the network elements are to be upgraded in the network operation and maintenance, the users are required to be migrated for a plurality of times, the operation and maintenance complexity is increased, and the normal operation of part of the service can be influenced.

Based on this, in an embodiment, when the second network element serving as the active network element of the first user group fails, the first network element directly selects one second network element serving as a standby network element capable of serving the first user group as the active network element of the first user group, and other second network elements serving as the first user group except the selected active network element serve as the standby network element of the first user group. At the same time, the first information may be updated. And the main standby state of the selected other second network element in the updated first information is the main standby state, and the main standby state of other second network elements except the other second network element in the at least two second network elements is the standby state. Here, the updated first information does not include the primary standby state of the failed second network element, and when the failed second network element is recovered, the first information may be updated again, where in the first information, the primary standby state of the failed second network element is sent to be the standby state.

In actual application, in step 301, the first network element may obtain at least two second network elements that can serve the first user group according to at least local configuration information, or discover at least two second network elements that can serve the first user group through a third network element (such as NRF); the embodiments of the present application are not limited to a specific implementation of determining at least two second network elements that may serve a first user group.

In practical application, the first network element and the second network element are different according to different functions of the second network element, and the first network element may include an AMF, and the second network element may include an SMF correspondingly. The first network element may comprise an SMF and the second network element may comprise a PCF, accordingly.

In practical application, the specific implementation manner of selecting one of the at least two second network elements capable of serving the first user group as the active network element of the first user group may include the following three types:

in a first manner, the first network element may passively select one second network element from the at least two second network elements as a primary network element of the first user group, that is, the first network element sends a first user group primary second network element state subscription message to the at least two second network elements, and the primary second network element of the at least two second network elements reports a primary state to the first network element, where the first network element selects the primary network element for the first user group.

Based on this, in an embodiment, second information is sent to each of the at least two second network elements, the second information indicating a state of the active network element subscribing to the first user group;

In practical application, the first network element may further determine at least two available second network elements that may serve the first user group according to local configuration information and/or available second network elements obtained from a third network element (such as NRF).

The second information may carry information about the first user group, such as an identification (e.g., ID) of the first user group, DNN of the first user group, and/or a network slice identification of the first user group.

In this way, in the initial state, the first network element sets the primary standby state of the at least two second network elements to standby. Correspondingly, after the first network element receives second information sent by a second network element, the first network element updates the first information; specifically, in the first information, the active and standby states of the second network element sending the second information are active states, and the active and standby states of other second network elements in the at least two SMFs except for the second network element sending the second information are standby states.

And for other first network elements, obtaining the main network element of the first user group through the same processing mode, and storing the first information.

When a first terminal belonging to the first user group accesses the network in actual application, the first network element firstly selects one second network element from the at least two second network elements for the first terminal so as to establish a session for the first terminal, and then the third information reported by the second network element is received.

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

and selecting the second network element which transmits the third information from at least two second network elements to establish a first session for the first terminal.

In practical application, the first network element may randomly select one second network element to establish a session for the first terminal, or may select one second network element to establish a session for the first terminal according to the selection priorities of at least two second network elements.

And when the first network element determines that the main standby states of the at least two SMFs are standby states according to the first information before receiving the third information, that is, when the first network element determines that the main standby states of the at least two second network elements are standby states before receiving the third information, the stored first information characterizes that the first terminal is the first accessed terminal of the first user group.

Here, when the first network element randomly selects the second network element for the first terminal, in order to avoid that other terminals in the first user group are simultaneously on line, so that other first network elements also select other second network elements in a random selection manner, so as to cause a conflict of a plurality of main second network elements, the first network element can maintain the effective duration of the state of the second network element sending the third information.

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

That is, after receiving the third information sent by the first network element, if the first network element receives fourth information sent by other second network elements except the second network element sending the third information in the at least two second network elements within the effective duration, the fourth information is regarded as invalid, meanwhile, a session is sent to release, and the second network element sending the third information is selected when the session of the user of the session which is released later is reestablished.

In practical application, the third information may include: related information of the first user group (such as an identification (such as an ID) of the first user group, DNN of the first user group, or a network slice identification of the first user group, etc.), a primary second network element identification (such as an IP address, an instance ID, etc.), and so on.

When the second network element sending the third information fails, other second network elements can be reselected and selected to manage session information and forwarding policies of all members in the first user group according to the mode, namely, one second network element of the other second network elements is selected as a main network element, and the first information is updated, so that fault disaster recovery is realized.

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

and taking the other second network element as the main network element of the first user group, and updating the first information.

In practical application, the first network element may sense whether the second network element is faulty through hypertext transfer protocol (HTTP) PING or subscribing the third network element to the state of the second network element, which is not limited in the embodiment of the present application.

In a second way, the first network element subscribes to the active and/or standby state of the first user group of the second network element through the third network element. Based on this, in an embodiment, the first network element sends seventh information to the third network element, the seventh information indicating a primary second network element subscribed to the first user group; and receiving eighth information sent by the third network element, wherein the eighth information indicates the primary second network element of the first user group.

Wherein in this case, when the primary second network element fails, the first network element further receives a new primary network element sent by the third network element, and the first network element uses the new primary second network element as a primary network element of the first user group, and updates the first information.

In a third manner, the first network element may actively select one second network element from the at least two second network elements as the active network element of the first user group, for example, the first network element randomly selects one second network element as the active second network element of the first user group, or selects one second network element as the active second network element of the first user group according to the selection priorities of the at least two second network elements.

In this case, the first network element needs to notify other first network elements, so that the other first network elements learn the active network elements of the first user group, and thus the user can access the network through the other first network elements.

Based on this, in an embodiment, the first network element actively selects one from the at least two second network elements as a master network element of the first user group;

accordingly, a ninth information is sent to the other first network element, said ninth information indicating the active/standby status of said at least two second network elements of said first user group.

In practical application, the number of the other first network elements may be at least one, that is, the number of the other first network elements may be the same as the number of the first network elements in the network.

The first network element actively selects one second network element from the at least two second network elements as the primary network element of the first user group, which may be when or before the first session of the first user group is initiated.

In this case, when a terminal accesses the first network element, the first network element may directly select the active network element of the first user group to establish a session for the terminal when it is determined that the terminal belongs to the first user group.

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

determining that a third terminal belongs to the first user group;

When the primary second network element fails, the first network element can actively select other second network elements to serve the first user group according to the first information, namely, reselecting one second network element of the other second network elements as the primary SMF, updating the first information, and sending the updated first information to the other first network elements, thereby realizing fault disaster recovery.

And in the updated first information, the main standby state of the reselected second network element is the main use, and the main standby states of other second network elements except the reselected second network element in the at least two second network elements are standby states.

Correspondingly, the embodiment of the application also provides a network element management method, which is applied to the second network element, as shown in fig. 4, and comprises the following steps:

step 401: receiving subscription information sent by a first network element, wherein the subscription information indicates the state of subscribing a first user group main network element; the second network element is one of at least two second network elements that can serve the first user group;

step 402: when the terminal to be served is determined to be the first terminal of the first user group, reply information aiming at the subscription information is sent to the first network element, the reply information characterizes the second network element as a main network element, and the reply information is used for the first network element to manage the main and standby states of at least two second network elements of the first user group.

In step 402, the determining that the terminal to be served is the first terminal of the first user group may also be understood that when the second network element determines that a user is the first user of the first user group, reply information for the subscription information is sent to the first network element.

In an embodiment, the second network element supports opening a subscription to the first network element for information of the active network element in the user group.

In practical applications, the subscription information may carry information about the first user group, such as an identification (such as an ID) of the first user group, a DNN of the first user group, or a network slice identification of the first user group.

According to the network element management method provided by the embodiment of the application, a first network element selects one of at least two second network elements capable of serving a first user group as a main network element of the first user group, and other second network elements except the selected second network element in the at least two second network elements are used as standby network elements. According to the scheme provided by the embodiment of the application, the second network element is provided for the same user group, the first network element determines the main and standby states of the second network element, so that the second network element can be selected for the user group user according to the determined main and standby states of the second network element, and the first network element determines the main and standby states of the second network element, so that the second network element for selecting service for the user group user according to the determined main and standby states of the second network element, fault disaster tolerance is realized, network reliability and flexibility are improved, and user experience is improved.

The present application is described in further detail below in connection with examples of application.

Application example one

In this embodiment of the present application, the user group includes a 5G VN group, and the SMF supports management and maintenance of a primary/standby state of serving the 5G VN group by itself, supports subscription of primary SMF information in the 5G VN group to the AMF, and supports a user of the 5G VN group combined with access to determine whether the primary SMF in the 5G VN group is a primary SMF; the AMF supports subscribing to the SMF for active SMF information specifying a 5G VN group, updating and saving of the 5G VN group based SMF active/standby state, and selecting a fixed SMF for 5G VN group users based on the locally saved SMF active/standby state, and local configuration of information of all available SMFs based on the 5G VN group.

First, a flow of user online is described.

Before implementing the scheme of the application embodiment, the SMF1 and SMF2 are deployed to serve the designated 5G VN group, and the 5G VN group is signed up for the user 1 and the user 2.

User 1 is the first online user in the 5G VN group, and the process of user 1 registering online and establishing a session includes:

step 1: the user 1 accesses the network through the AMF1, so that the user 1 is online, the AMF1 judges that the user 1 is a 5G VN group user according to user subscription information such as VN group ID, DNN, S-NSSAI and the like, and then the AMF1 sends a VN group main SMF state subscription message to all SMFs (namely SMFs 1 and SMFs 2) which can serve the VN group;

Here, the subscription message may carry VN group information (e.g. DNN, S-nsai or VN group ID, etc.) and an active SMF request indication.

AMF1 can obtain SMF which can serve the appointed VN group through a local configuration mode, meanwhile AMF1 locally stores the active/standby states of SMF1 and SMF2, and the initial states are standby.

Step 2: user 1 initiates a session establishment request, AMF1 discovers available SMFs according to DNN, S-NSSAI and other information of user 1, AMF1 configures the intersection of available SMFs according to the SMFs discovered by NRFs and the local, and the SMFs are assumed to be SMFs 1 and SMFs 2 (when the session establishment request is actually applied, the SMFs configured locally may be the same as SMFs discovered by NRFs or may be a subset of SMFs discovered by NRFs), and AMF1 selects one SMF from SMFs 1 and SMFs 2 to perform a session establishment flow;

here, the AMF1 may select any one of the SMFs at random, or may select one of the SMFs preferentially according to a local configuration or the like.

Step 3: assuming that SMF1 is selected, when SMF1 determines that the session of user 1 is the first session in the VN group, the SMF becomes the master SMF in the VN group, and the subscription of AMF1 is replied at the moment;

the reply message may carry VN group information (such as DNN, S-nsai, or VN group ID, etc.), active SMF identifier (such as IP address, instanceID (which may be understood as a device identification number of SMF), etc.), and/or active status thereof.

Step 4: after the AMF1 receives the reply, updating the SMF active/standby state of the locally stored VN group, namely, the state of the SMF1 is an active SMF state and the state of the SMF2 is a standby SMF state;

the subsequent AMF1 selects SMF1 for all other members in the VN group according to the locally stored SMF active/standby status of the VN group.

It should be noted that: in step 2, if the AMF1 selects the SMF1 in a random selection manner, in order to avoid that other users in the VN group are simultaneously on line, the AMF1 may maintain the effective duration of the state of the primary SMF1 due to the collision of multiple primary SMFs caused by the selection of other SMFs in the random selection manner, that is, when the AMF1 notifies the AMF1 that the AMF1 is the primary SMF, that is, after the AMF1 receives the reply of the SMF1, the AMF1 may select the SMF1 if the state information of the primary SMF received by other SMFs in the same VN group is invalid in the effective duration, and initiate session release at the same time.

Step 5: after AMF1 completes the selection of the primary SMF, SMF1 establishes a session, until which time, user 1 completes the session establishment.

The process of registering online and establishing session for the user 2 comprises the following steps:

step 1: the user 2 accesses the network through the AMF2, thereby being online, the AMF2 judges that the user 2 is a 5G VN group user according to user subscription information such as VN group ID, DNN, S-NSSAI and the like, and then the AMF2 sends a VN group main SMF state subscription message to all SMFs (namely SMF1 and SMF 2) which can serve the VN group;

AMF2 can obtain SMF which can serve the appointed VN group through a local configuration mode, meanwhile AMF1 locally stores the active/standby states of SMF1 and SMF2, and the initial states are standby.

Step 2: SMF1 is the main SMF of the VN group, and after SMF1 receives the subscription message, the subscription of AMF2 is replied immediately;

here, the reply message may carry VN group information, SMF1 identification and/or its active status.

Step 3: after the AMF2 receives the reply, updating the SMF active/standby state of the locally stored VN group, namely, the state of the SMF1 is the active SMF state and the state of the SMF2 is the standby SMF state;

step 4: user 2 initiates a session establishment request, and AMF2 directly selects SMF1 to complete the session establishment flow.

As can be seen from the above description, the solution provided by the present application embodiment provides a primary and a secondary SMF for the same 5G VN group, where the SMF maintains and manages its own primary/standby state according to the access situation of the user in the VN group, and the AMF subscribes its primary/standby state to all SMFs supporting the 5G VN group; when the first user session in the VN group is established, the SMF becomes the master SMF of the VN group, and notifies the AMF, and the AMF locally stores the SMF state for later use when the SMF is selected.

Next, a process flow after the failure of the primary SMF will be described.

The processing flow after the failure of the main SMF comprises the following steps:

step 1: SMF1 faults, all users in the corresponding VN group are disconnected and disconnected again, and the users 1 and 2 are respectively connected with AMF1 and AMF2;

step 2: when a user initiates a session request, and the user establishes a session, as AMF1 and AMF2 locally store SMF states of VN groups, the SMF states are still SMF1 as a main SMF and SMF2 as a standby SMF, but as SMF1 fails, only SMF2 is available, so that AMF1 and AMF2 select SMF2 to complete a user session establishment flow;

step 3: when the SMF2 processes the flow of the first session establishment of the VN group, the VN group becomes the master SMF in the VN group, and replies subscription information to all AMFs subscribing to the master SMF state, AMF1 and AMF2 update the master SMF/standby state of the locally stored VN group, namely the SMF2 state is the master SMF state.

The subsequent AMF selects SMF2 for each member in the VN group according to the locally stored SMF active/standby status of the VN group.

When the SMF1 is in fault recovery, subscription information is replied to all AMFs subscribing to the primary SMF state, and AMF1 and AMF2 update the primary/standby SMF state of the locally stored VN group, namely the state of the SMF1 is the standby SMF state and the state of the SMF2 is the primary SMF state.

As can be seen from the above description, the solution provided by the present application embodiment, when the primary SMF fails, the standby SMF upgrades to the primary SMF and then notifies the AMF, and the AMF updates the locally stored primary/standby state of the SMF.

Application example II

In this embodiment of the present application, the user group includes a 5G VN group, and the SMF supports management and maintenance of an active/standby state of itself serving the 5G VN group, and supports that the user of the 5G VN group combined with access determines whether it is an active SMF in the 5GVN group; the AMF supports subscribing NRF to active SMF information specifying a 5G VN group, updating and saving of 5G VN group based SMF active/standby state, and selecting a fixed SMF for 5G VN group users based on locally saved SMF active/standby state.

First, a flow of the first user of the 5G VN group to be online is described.

Before implementing the scheme of the application embodiment, the SMF1 and the SMF2 are deployed to serve the appointed VN group, and when the SMF1 and the SMF2 are registered with the NRF, the active/standby state (the initial state is standby) based on the appointed VN group is supported to carry, and the 5G VN group is signed up for the user 1 and the user 2.

step 1: the user 1 accesses the network through the AMF1, so that the user 1 is online, the AMF1 goes to the NRF to find available SMFs, namely SMFs 1 and SMFs 2 according to subscription information of the user 1, such as DNN, S-NSSAI and the like, one SMF is selected from the SMFs 1 and the SMFs 2 according to parameters of equipment weight and the like to carry out a session establishment flow, and all available SMFs (SMFs 1 and SMFs 2) are subscribed for the active/standby state based on a designated VN group through the NRF;

Here, the subscription message may carry an SMF identification (such as an IP address, SMF InstanceID, etc.), VN group information (such as DNN, S-nsai, or VN group ID, etc.), and an SMF active request indication.

Step 2: assuming that SMF1 is selected, SMF1 determines that the session is the first session in the VN group, becomes itself the active SMF in the VN group, and then updates the active/standby state of the SMF1 VN group to NRF, and NRF replies to the subscription message of AMF 1;

the reply message may carry VN group information (such as DNN, S-nsai, or VN group ID, etc.), SMF identification (such as IP address, instanceID, etc.), and/or its active status.

Step 3: after the AMF1 receives the reply, updating the SMF active/standby state of the locally stored VN group, namely, the state of the SMF1 is an active SMF state and the state of the SMF2 is a standby SMF state;

and when other members in the VN group subsequently access the network through the AMF1, the AMF1 selects the SMF1 for the other members in the VN group according to the SMF active/standby state of the locally stored VN group.

step 1: the user 2 accesses the network through the AMF2, so that the user 2 is online, the AMF2 judges that the user 2 is a 5G VN group user according to user subscription information such as VN group ID, DNN, S-NSSAI and the like, and the AMF2 subscribes to the NRF for all SMF (i.e. SMF1 and SMF 2) VN group main SMF state subscription information which can serve the VN group;

Step 2: NRF replies to AMF2 subscription message;

As can be seen from the above description, the solution provided by the present application embodiment provides a primary and a secondary SMF for the same 5G VN group, where the SMF maintains and manages its own primary/standby state according to the access situation of the user in the VN group, and the AMF subscribes its primary/standby state to all the SMFs supporting the 5G VN group through the NRF; when a first user session in the VN group is established, the SMF becomes a master SMF of the VN group, and informs the AMF through the NRF, and the AMF locally stores the SMF state for later use in selecting the SMF.

Next, a process flow after the failure of the primary SMF will be described.

Step 1: when the SMF1 fails, the equipment state of the SMF1 in the NRF is updated to be in a failure state, all users (namely, user 1 and user 2) in the VN group are offline and online again, and the user 1 and the user 2 are respectively connected with the AMF1 and the AMF2;

step 2: when a user establishes a session, AMF1 and AMF2 locally store SMF states of VN groups as SMF1 as a main SMF and SMF2 as a standby SMF, but as SMF1 fails, AMF1 and AMF2 find available SMF as SMF2 through NRF, so that SMF2 is selected to complete a user session establishment flow;

step 3: when the SMF2 processes the flow of the first session establishment of the VN group, it becomes the active SMF in the VN group, and updates the active/standby state of the VN group to the NRF, the NRF replies subscription messages of all AMFs, and AMFs 1 and 2 update the active/standby state of the SMF locally stored in the VN group, i.e. the state of the SMF2 is the active SMF state.

When the SMF1 fails to recover, re-registers with the NRF, and because no VN group user is locally accessed, the active/standby state of the VN group in the registration information of the SMF1 is updated to the standby state, the NRF replies subscription messages of all AMFs, the state of the SMF1 is the standby SMF state, the AMFs 1 and the AMF2 update the active/standby state of the SMF locally stored in the VN group, that is, the state of the SMF1 is the standby SMF state, and the state of the SMF2 is the active SMF state.

As can be seen from the above description, in the solution provided by the present application embodiment, when the primary SMF fails, the standby SMF upgrades to the primary SMF and notifies the NRF, and the NRF receives the notification and notifies the AMF, and the AMF updates the locally stored primary/standby state of the SMF.

Application example III

In this application embodiment, the user group refers to at least one user belonging to the same DNN or slice, and when the network element is selected, the active/standby state of the network element is the active/standby state based on the DNN or slice, and when the user having the specified DNN or slice in the network element accesses the network element, the user is the active network element, and the state of the network element can directly subscribe to other network elements in an open state/capability.

In this application embodiment, the user 1 and the user 2 belong to DNN1 (the user group corresponding to the user 1 and the user 2 is referred to as DNN1 user group in the following description), and the process of the SMF selecting the PCF for the user group includes:

step 1: user 1 belonging to DNN1 establishes session in SMF1, SMF1 selects PCF based on user number segment, DNN, slice, etc., if PCF1 and PCF2 can serve DNN1 user, SMF1 sends PCF1 and PCF2 main PCF state subscription message based on DNN;

here, the subscription message may carry DNN information and an indication of the primary PCF request; at this time, since there is no policy session of the DNN1 user group on the PCF, the initial state is standby, and the SMF1 optionally completes the policy session establishment of the user 1 by one PCF.

Step 2: assuming that PCF1 is selected, when PCF1 determines that user 1 is the first user of DNN1 user group, the PCF1 becomes the main PCF of DNN1 user group, and replies to the subscription of SMF1 at this time;

the reply message may carry DNN1 information and the indication of the primary PCF.

When the policy session established by PCF1 for user 1 is the first policy session belonging to the DNN1 user group or the policy session issued to user 1 is the policy session issued for the first time to belong to the DNN1 user group, the PCF1 determines that user 1 is the first user of the DNN1 user group.

Step 3: after receiving the reply, SMF1 updates the PCF main/standby state of the local user group capable of serving DNN1, namely, the state of PCF1 is the main PCF state, and the state of PCF2 is the standby PCF state;

wherein, other access SMF1 users in the subsequent DNN1 user group all select PCF1.

Step 4: when the SMF2 performs session establishment, the SMF2 sends a subscription message based on the DNN main PCF state to PCF1 and PCF2, at this time, PCF1 is the main PCF, so after receiving the subscription message, the SMF2 replies the subscription of the SMF2, namely replies the main PCF1 state information, the SMF2 updates the main/standby PCF state of the local PCF capable of serving the DNN1 user group, namely the PCF1 state is the main PCF state, the PCF2 state is the standby PCF state, and the SMF2 selects the PCF1 to complete policy session establishment.

When PCF1 fails, all user policy session on PCF1 fails, SMF initiates policy session establishment with other PCFs, when SMF selects PCF, it finds out main PCF1 failure, then selects one PCF from other available PCFs, namely PCF2, PCF2 becomes main PCF and replies to subscription of SMF, SMF1 and SMF2 update main/standby state of PCF which can serve DNN1 user group locally, namely PCF2 is main PCF state.

The subsequent SMF uniformly selects PCF2 for the user belonging to DNN1, namely PCF2 is the main PCF, and PCF1 is the standby PCF.

After the PCF2 fails, PCF1 replies to the subscription of SMF, and SMF1 and SMF2 update the PCF active/standby status of the local user group that can serve DNN1, i.e. the status of PCF1 is the standby PCF status, and the status of PCF2 is the active PCF status.

Application example IV

In this application embodiment, the user group refers to at least one user belonging to the same DNN or slice, and when a network element is selected, the active/standby state of the network element is the active/standby state based on the DNN or slice, and when a user with a specified DNN or slice in the network element accesses the network element, the user is the active network element, and the state of the network element can be opened to other network elements by updating registration information of the NRF, so that other network elements subscribe.

In the present application embodiment, the user 1 and the user 2 belong to DNN1 (the user group corresponding to the user 1 and the user 2 is referred to as DNN1 user group in the following description). The SMF selects PCF for user group flow includes:

Step 1: the PCF1 and PCF2 support the active/standby state carrying DNN 1-based user group when registering with NRF, and the initial state is standby.

Step 2: the user 1 belonging to DNN1 establishes a session in SMF1, the SMF1 selects PCF based on the factors of user number segment, DNN, slice and the like, at this time, because there is no policy session of DNN1 user group on PCF1 and PCF2, the SMF1 optionally completes the policy session establishment of user 1 by one PCF, and subscribes to the state subscription message based on DNN1 user group main PCF from NRF;

here, the subscription message carries DNN information and an indication of the primary PCF request.

Step 3: assuming that PCF1 is selected, PCF1 determines that user 1 is the first user of the DNN1 user group, itself becomes the primary PCF, and updates the primary/standby status of the DNN1 user group to the NRF, which replies to the subscription message of SMF 1;

here, the reply message may carry DNN information, PCF identification, and/or its PCF active status, etc.

Step 4: after receiving the reply, SMF1 updates the PCF main/standby state of the local user group capable of serving DNN1, namely, the state of PCF1 is the main PCF state, and the state of PCF2 is the standby PCF state;

Step 5: the user 2 belonging to DNN1 establishes a session in SMF2, SMF2 subscribes to NRF for the active/standby states of all PCFs (PCF 1 and PCF 2) that can serve the DNN1 user group, when PCF1 is already active PCF, NRF replies to PCF1 with active state information immediately, SMF2 updates the active/standby state of the PCF that can serve the DNN1 user group locally, that is, PCF1 is active PCF state, PCF2 is standby PCF state, and SMF2 selects PCF1 to complete policy session establishment.

When the PCF1 fails, all user policy sessions on the PCF1 fail, the SMF initiates policy session establishment with other PCFs, and the SMF discovers that the main PCF1 fails when selecting PCF, but because the PCF1 fails, the SMF1 and the SMF2 discover that the available PCF is PCF2 through the NRF, the PCF2 becomes the main PCF, and updates PCF main/standby states based on DNN1 user groups to the NRF, the NRF replies subscription messages of all the SMFs, and the SMF1 and the SMF2 update the main/standby states of the PCF which can locally serve the DNN1 user groups, namely the state of the PCF2 is the main PCF state.

When the PCF1 is in fault recovery, re-registering with NRF, because there is no local access to the DNN1 user group, the registration information of PCF1 is updated to standby state based on the active/standby state of DNN1 user group, NRF replies subscription information of all SMFs, PCF1 is standby PCF state, SMF1 and SMF2 update local overcome PCF active/standby state which can serve DNN1 user group, i.e. PCF1 is standby PCF state, PCF2 is active PCF state.

The scheme provided by the embodiment of the application is a disaster recovery scheme which can be applied to the user group, and the network reliability and the user experience are improved by adopting the scheme of the embodiment of the application.

In order to implement the method of the embodiment of the present application, the embodiment of the present application further provides a network element management device, which is disposed on the first network element, as shown in fig. 5, and the device includes:

a determining unit 501, configured to determine at least two second network elements that can serve the first user group;

a management unit 502, configured to select one of at least two second network elements capable of serving a first user group as a primary network element of the first user group, and use other second network elements except the selected second network element of the at least two second network elements as standby network elements.

In one embodiment, the management unit 502 is further configured to store first information, where the first information characterizes a primary standby state of the at least two second network elements.

In an embodiment, the management unit 502 is further configured to select, when the second network element serving as the primary network element of the first user group fails, one second network element serving as a standby network element capable of serving the first user group as the primary network element of the first user group, and select, as the standby network element of the first user group, other second network elements serving as the first user group than the selected second network element serving as the primary network element.

The management unit 502 is configured to:

Here, in an embodiment, the management unit 502 is further configured to:

In an embodiment, the management unit 502 is configured to determine that the first information stored before the third information is received characterizes that the primary standby states of the at least two second network elements are both standby states.

In an embodiment, the management unit 502 is further configured to:

In an embodiment, the management unit 502 is configured to:

Wherein, in an embodiment, the management unit 502 is further configured to:

determining that a third terminal belongs to the first user group;

In practical applications, the determining unit 501 and the managing unit 502 may be implemented by a processor in the network element management device in combination with a communication interface.

In order to implement the method on the second network element side in the embodiment of the present application, the embodiment of the present application further provides a network element management device, which is disposed on the second network element, as shown in fig. 6, and the device includes:

a receiving unit 601, configured to receive subscription information sent by a first network element, where the subscription information indicates a state of subscribing to a first user group active network element; the second network element is one of at least two second network elements that can serve the first user group;

and a processing unit 602, configured to send, when determining that the terminal to be served is the first terminal of the first user group, reply information for the subscription information to the first network element, where the reply information characterizes the second network element as a primary network element, and the reply information is used for the first network element to manage a primary and a standby state of at least two second network elements of the first user group.

In one embodiment, the second network element supports subscription of the active network element information in the user group to the first network element.

In practical applications, the receiving unit 601 may be implemented by a communication interface in a network element management device, and the processing unit 602 may be implemented by a processor in the network element management device in combination with the communication interface.

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

Based on the hardware implementation of the program module, and in order to implement the method on the first network element side in the embodiment of the present application, the embodiment of the present application further provides a first network element, as shown in fig. 7, where the first network element 700 includes:

a first communication interface 701, capable of performing information interaction with other network elements (such as other first network elements, second network elements, third network elements, etc.);

The first processor 702 is connected to the first communication interface 701 to implement information interaction with other network elements, and is configured to execute the method provided by one or more technical solutions on the first network element side when running a computer program;

a first memory 703, the computer program being stored on the first memory 703.

Specifically, the first processor 702 is configured to:

Wherein in an embodiment, the first processor 702 is further configured to the at least two second network elements.

In an embodiment, the first processor 702 is further configured to store first information, where the first information characterizes a primary standby state of the at least two second network elements.

In an embodiment, the first processor 702 is further configured to select, when the second network element serving as the primary network element of the first user group fails, a second network element serving as a standby network element capable of serving the first user group as the primary network element of the first user group, and select, as the standby network element of the first user group, other second network elements capable of serving the first user group than the selected second network element serving as the primary network element.

In one embodiment, the first processor 702 is configured to:

transmitting second information to each of the at least two second network elements through the first communication interface 701, where the second information indicates a state of a primary network element subscribed to the first user group;

receiving third information sent by one second network element of the at least two second network elements through the first communication interface 701, where the third information characterizes that the second network element sending the third information is a main network element of the first user group;

Here, in an embodiment, the first processor 702 is further configured to:

In one embodiment, the first processor 702 is configured to determine that the first information stored before the third information is received indicates that the primary standby states of the at least two second network elements are both standby states.

In an embodiment, the first processor 702 is further configured to:

In one embodiment, the first processor 702 is configured to:

transmitting seventh information to a third network element through the first communication interface 701, where the seventh information indicates a primary second network element subscribed to the first user group;

and receiving eighth information sent by the third network element through the first communication interface 701, where the eighth information indicates the primary second network element of the first user group.

In one embodiment, the first processor 702 is configured to:

and sending ninth information to another first network element through the first communication interface 701, where the ninth information indicates a primary and standby state of the at least two second network elements of the first user group.

Wherein, in an embodiment, the first processor 702 is further configured to:

determining that a third terminal belongs to the first user group;

It should be noted that: the specific processing of the first processor 702 may be understood with reference to the methods described above.

Of course, in actual practice, the various components in first network element 700 would be coupled together via bus system 704. It is appreciated that bus system 704 is used to enable connected communications between these components. The bus system 704 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration, the various buses are labeled as bus system 704 in fig. 7.

The first memory 703 in the embodiment of the present application is used to store various types of data to support the operation of the first network element 700. Examples of such data include: any computer program for operating on the first network element 700.

The method disclosed in the embodiments of the present application may be applied to the first processor 702, or implemented by the first processor 702. The first processor 702 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method may be implemented by integrated logic of hardware in the first processor 702 or instructions in software form. The first processor 702 described above may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The first processor 702 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied in a hardware decoding processor or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the first memory 703, and the first processor 702 reads information in the first memory 703, and in combination with its hardware, performs the steps of the method described above.

In an exemplary embodiment, the first network element 700 may be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSPs, programmable logic devices (PLD, programmable Logic Device), complex programmable logic devices (CPLD, complex Programmable Logic Device), field-programmable gate arrays (FPGA, field-Programmable Gate Array), general purpose processors, controllers, microcontrollers (MCU, micro Controller Unit), microprocessors (Microprocessor), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program module, and in order to implement the method on the second network element side in the embodiment of the present application, the embodiment of the present application further provides a second network element, as shown in fig. 8, where the second network element 800 includes:

a second communication interface 801, capable of performing information interaction with other network elements (such as the first network element, the third network element, etc.);

a second processor 802, connected to the second communication interface 801, for implementing information interaction with other network elements, and configured to execute a method provided by one or more technical solutions on the second network element side when running a computer program;

a second memory 803, the computer program being stored on the second memory 803.

Specifically, the second communication interface 801 is configured to receive subscription information sent by the first network element, where the subscription information indicates a state of subscribing to the first user group active network element; the second network element is one of at least two second network elements that can serve the first user group;

the second processor 802 is configured to send, when determining that the terminal to be served is the first terminal of the first user group, reply information for the subscription information to the first network element, where the reply information characterizes the second network element as a primary network element, and the reply information is used for the first network element to manage a primary and a standby state of at least two second network elements of the first user group.

In one embodiment, the second network element 800 supports subscription supporting of active network element information in the user group to the first network element.

It should be noted that: the specific processing procedure of the second processor 802 and the second communication interface 801 can be understood by referring to the above method.

Of course, in practice, the various components in the second network element 800 are coupled together by a bus system 804. It is to be appreciated that the bus system 804 is employed to enable connected communications between these components. The bus system 804 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 804 in fig. 8.

The second memory 803 in the embodiment of the present application is used to store various types of data to support the operation of the second network element 800. Examples of such data include: any computer program for operating on the second network element 800.

The method disclosed in the embodiments of the present application may be applied to the second processor 802, or implemented by the second processor 802. The second processor 802 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the method described above may be performed by integrated logic circuits of hardware or instructions in software form in the second processor 802. The second processor 802 described above may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 802 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied in a hardware decoding processor or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 803, said second processor 802 reading the information in the second memory 803, in combination with its hardware performing the steps of the method as described above.

In an exemplary embodiment, the second network element 800 may be implemented by one or more ASIC, DSP, PLD, CPLD, FPGA, general purpose processors, controllers, MCU, microprocessor, or other electronic elements for performing the foregoing methods.

It is to be understood that the memories (the first memory 703 and the second memory 803) of the embodiments of the present application may be volatile memories or nonvolatile memories, and may include both volatile memories and nonvolatile memories. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory described in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

In order to implement the method provided by the embodiment of the present application, the embodiment of the present application further provides a network element management system, as shown in fig. 9, where the system includes: a first network element 901 and a second network element 902.

Here, it should be noted that: specific processing procedures of the second network element 901 and the second network element 902 are described in detail above, and are not described herein.

In an exemplary embodiment, the present application further provides a storage medium, i.e. a computer storage medium, in particular a computer readable storage medium, for example, including a first memory 703 storing a computer program, where the computer program may be executed by the first processor 702 of the first network element 700 to perform the steps of the foregoing first network element side method, and further for example, including a second memory 803 storing a computer program, where the computer program may be executed by the second processor 802 of the second network element 800 to perform the steps of the foregoing second network element side method. The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

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

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

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

Claims

1. A network element management method, applied to a first network element, comprising:

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

3. The method according to claim 1, characterized in that when a second network element serving as a primary network element of the first user group fails, a second network element serving as a backup network element of the first user group is selected as a primary network element of the first user group, and other second network elements serving as the first user group than the selected primary network element are selected as backup network elements of the first user group.

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

and determining the at least two second network elements.

5. The method according to claim 1, wherein the second network element being the first subscriber group active network element is the same or different from the second network element being the second subscriber group active network element.

6. The method according to any of the claims 1 to 5, wherein said selecting one of at least two second network elements that can serve a first user group as a master network element of said first user group comprises:

7. The method of claim 6, wherein the method further comprises:

8. The method of claim 7, wherein the determining that the first terminal is the first access terminal of the first group of users comprises:

9. The method of claim 6, wherein the method further comprises:

10. The method of claim 6, wherein the step of providing the first layer comprises,

11. The method according to any of the claims 1 to 5, wherein said selecting one of at least two second network elements that can serve a first user group as a master network element of said first user group comprises:

12. The method according to any of the claims 1 to 5, wherein said selecting one of at least two second network elements that can serve a first user group as a master network element of said first user group comprises:

13. The method according to claim 12, wherein the method further comprises:

Determining that a third terminal belongs to the first user group;

14. A network element management method, applied to a second network element, comprising:

15. The method of claim 14, wherein the second network element supports subscription to active network element information within the first network element open user group.

16. A network element management device, comprising:

17. A network element management device, disposed in a second network element, comprising:

18. A first network element, comprising: a first communication interface and a first processor; wherein, the liquid crystal display device comprises a liquid crystal display device,

the first processor is configured to:

19. A second network element, comprising:

20. A first network element, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is adapted to perform the steps of the method of any of claims 1 to 13 when the computer program is run.

21. A second network element, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is adapted to perform the steps of the method of claim 14 or 15 when the computer program is run.

22. A storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of the method of any of claims 1 to 13, or the steps of the method of claim 14 or 15.