User data backup method under 5G AMF POOL networking

Abstract

The invention discloses a user data backup method under 5G AMF POOL networking, and relates to the technical field of data backup. According to the method, a Redis channel technology is utilized, and a memory database is deployed between an AMF network element and a Redis database; through the configured channel information, the main AMF network element writes data into Redis in real time, and the standby AMF network element performs data synchronous backup through a pre-configured local strategy; in the same 5G AMF POOL network, different AMF network elements use different channels to perform data read-write operation when being started, and data synchronization is realized through a subscription mechanism; and when a certain AMF network element has a fault, the OAM network element detects an exception and notifies a new standby AMF network element to take over a data backup task, and meanwhile, information about the standby network element of the base station is updated. According to the invention, real-time switching of the AMF network element in the abnormal scene of the standby network element can be realized through the data of the Redis data channel, and the problem that the backup cannot be updated even if the standby network element is abnormal is solved.

Description

Technical Field

[0001] The present invention relates to the field of data backup technology, and in particular to a method for backing up user data in a 5G AMF POOL network. Background Art

[0002] As 5G networks are developing rapidly, 5G POOL networking has become a key mode in network architecture, and its data backup mechanism is crucial to ensuring stable network operation and continuity of user services. At present, the data backup mechanism under 5G POOL networking mainly relies on a unified storage and management system, which is like a "guardian fortress" for network data, centrally collecting and orderly managing data scattered in various network element nodes.

[0003] The adoption of the N+M load sharing mode is a highlight of this backup mechanism. In the traditional network architecture, a single network element may need to bear too heavy a load, resulting in performance degradation or even failure. In the N+M load sharing mode, N active network elements normally undertake business processing tasks, and M standby network elements are on standby at any time. When the load of the active network element is too high, part of the business will be automatically diverted to the standby network element, achieving balanced load distribution. This method not only reduces construction and operation costs, because there is no need to equip each network element with extremely high processing capabilities, but also greatly improves resource utilization, allowing each network element to maximize its efficiency at the right time.

[0004] Supporting N+K geographical disaster recovery provides a solid insurance for network reliability. Geographic disaster recovery means setting up K disaster recovery network element nodes in different geographical locations. When any network element node has problems due to natural disasters, equipment failures, etc., user services can be quickly switched to the disaster recovery network element node to achieve seamless and continuous access. For example, when a network element node in a certain city is damaged by an earthquake, the user services in the area can be immediately taken over by the disaster recovery network elements in other geographical locations. Users will hardly notice the interruption of network services, ensuring user experience and normal business operations.

[0005] Although the current 5G POOL networking data backup mechanism has many advantages, there are still certain deficiencies in the formulation and implementation of existing technical backup strategies. The lack of flexibility has become a key factor restricting it from meeting the needs of all business scenarios.

[0006] Different business scenarios have different requirements for data backup. For some businesses with extremely high real-time requirements, such as autonomous driving and industrial automation control, data backup and recovery must be completed in a very short time to ensure business continuity and security. However, existing backup strategies may not be able to respond to these urgent needs quickly, resulting in business delays or even interruptions.

[0007] For some businesses that have extremely high requirements for data integrity, such as financial transactions and medical data storage, more sophisticated and strict backup strategies may be required. Existing backup strategies may not be customized for these special businesses, and cannot guarantee the integrity of data during the backup and recovery process, thus bringing potential risks.

[0008] In addition, with the continuous expansion of 5G network applications, new business scenarios emerge in an endless stream. The formulation and implementation of existing backup strategies are often based on traditional business models and needs, lacking sufficient flexibility to quickly adapt to changes in these emerging business scenarios. This results in the backup strategy being unable to provide effective support for some innovative businesses, such as smart IoT, virtual reality, and other applications, affecting business development and promotion.

[0009] In summary, although the data backup mechanism under 5G POOL networking has achieved certain results in cost control, resource utilization and disaster recovery, the lack of flexibility of the existing backup strategy limits its application in more business scenarios. In the future, it is necessary to further optimize the backup strategy and improve its flexibility and adaptability to better meet the needs of diversified services in 5G networks. Summary of the invention

[0010] Since data backup is required between network elements in the AMF group POOL scenario, the 5G protocol can only inform the base station of the information of a backup network element. However, if the backup network element fails, the data cannot be backed up normally, and if the main network element also fails at this time, the main and backup network elements cannot handle the users connected to the network. Therefore, in order to solve the problem that the backup cannot be updated immediately due to the backup network element failure, the present invention provides a user data backup method under 5G AMF POOL networking.

[0011] The user data backup method under 5G AMF POOL networking of the present invention adopts the following technical solutions to solve the above technical problems:

[0012] A user data backup method in 5G AMF POOL networking, using Redis channel technology, deploying a memory database between the AMF network element and the Redis database;

[0013] Through the configured channel information, the active AMF network element writes data to Redis in real time, and the standby AMF network element performs data synchronization and backup through the pre-configured local strategy;

[0014] In the same 5G AMF POOL network, different AMF network elements use different channels for data reading and writing operations when they are started, and achieve data synchronization through a subscription mechanism; when an AMF network element fails, the OAM network element detects the abnormality and notifies the new standby AMF network element to take over the data backup task, and updates the base station's information about the standby network element.

[0015] Optionally, the user data backup method involved has the following specific implementation process:

[0016] (1) Configure independent channel information for each AMF network element, including the primary channel and the backup channel, as well as the corresponding Redis connection parameters;

[0017] (2) The active AMF network element writes user data to the Redis memory database in real time through its configured active channel according to business needs;

[0018] (3) The standby AMF network element receives data change notifications in real time by subscribing to the active channel of the active AMF network element, and synchronizes the data to its own memory bank;

[0019] (4) The OAM network element continuously monitors the status of all AMF network elements. Once an abnormality is detected in an AMF network element, the preset fault recovery process is immediately triggered;

[0020] (5) The OAM network element sends a notification to the new standby AMF network element according to the pre-configured fault recovery strategy, instructing it to start monitoring and backing up the data channel responsible for the abnormal AMF network element;

[0021] (6) After receiving the fault notification from OAM, the original active AMF network element initiates a status modification request to the base station, carrying the new standby AMF network element information to ensure that the base station can identify the current active and standby AMF network elements;

[0022] (7) The new standby AMF network element starts to read data through the subscribed original primary channel and writes it into its own memory bank to complete the data backup.

[0023] Further optionally, during the execution of steps (1)-(7), the OAM network element monitors the status of all AMF network elements to ensure stable operation of the system and consistency of data.

[0024] Preferably, the primary channel is the main path for the AMF network element to interact with the Redis memory database during normal operation, which is used to ensure that user data can be written to the Redis database efficiently and in real time;

[0025] The backup channel exists as a redundancy mechanism. When the main channel fails or is abnormal, the backup channel quickly takes over the work of the main channel to ensure continuous data transmission and stable operation of the system.

[0026] Configure the corresponding Redis connection parameters for the main channel and the backup channel, including the address, port number, and authentication information of the Redis server, to ensure that the AMF network element is accurately and stably connected to the Redis database for data read and write operations.

[0027] Further optionally, step (3) is executed. When the active AMF network element writes new user data to Redis, the standby AMF network element is immediately notified, reads the data, and stores it in its own memory library, so that the data between the standby AMF network element and the active AMF network element is always consistent.

[0028] Further optionally, step (4) is performed, and the OAM network element grasps the operation status of each AMF network element in real time by regularly sending heartbeat signals or monitoring the performance indicators of the AMF network element;

[0029] When the heartbeat signal of an AMF network element is found to have timed out or the performance indicators of the AMF network element are abnormal, the OAM network element determines that the AMF network element is abnormal and starts the preset fault recovery process to ensure the reliability and stability of the system.

[0030] Further optionally, step (6) is executed. When the original main AMF network element knows that it has an abnormality, it will send a status modification request to the base station based on the notification of the OAM network element. The request includes relevant information of the new backup AMF network element so that the base station can update the internal status information in time and correctly route subsequent requests to the new backup AMF network element.

[0031] Further optionally, step (7) is performed. After receiving the notification from the OAM network element, the new standby AMF network element immediately starts to read the data through the subscribed original main channel and stores it in its own memory library. This process continues until the new standby AMF network element has backed up all necessary data, ensuring that it can completely take over the work of the abnormal AMF network element and provide continuous service to users.

[0032] A user data backup method under 5G AMF POOL networking of the present invention has the following beneficial effects compared with the prior art:

[0033] The present invention completes data backup by specifying different database channels. The active AMF network element writes data through the specified channel, and the standby AMF network element synchronizes data by subscribing to different channels, thereby ensuring that the AMF network element memory library can be synchronized to other network elements in real time to write data. When the standby AMF network element fails, the active network element can modify the standby AMF network element information in time and notify the base station through NGAP signaling to complete the replacement of the standby AMF network element, thus solving the problem that the backup cannot be updated in time due to the abnormality of the standby network element. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Attached Figure 1 This is a 5G AMF POOL networking architecture diagram according to Embodiment 1 of the present invention;

[0035] Attached Figure 2 It is a flow chart of the method described in Embodiment 1 of the present invention.

[0036] Attached Figure 1 RAN is the abbreviation of Radio Access Network. RAN is the part of the mobile communication network located between the user equipment (UE) and the core network (CN). It is mainly responsible for connecting the user equipment to the core network, providing wireless communication services to users, realizing the transmission, reception and processing of wireless signals, and enabling mobile terminals to access the network for data transmission, voice calls and other services. DETAILED DESCRIPTION

[0037] In order to make the technical solution, the technical problem solved and the technical effect of the present invention more clearly understood, the technical solution of the present invention is clearly and completely described below in conjunction with specific embodiments.

[0038] Embodiment 1:

[0039] Reference Figure 1 , This embodiment proposes a user data backup method under 5G AMF POOL networking, which uses Redis channel technology to deploy a memory database between the AMF network element and the Redis database; through the configured channel information, the active AMF network element writes data to Redis in real time, and the standby AMF network element performs data synchronization and backup through a pre-configured local policy;

[0040] In the same 5G AMF POOL network, different AMF network elements use different channels for data reading and writing operations when they are started, and achieve data synchronization through a subscription mechanism; when an AMF network element fails, the OAM network element detects the abnormality and notifies the new standby AMF network element to take over the data backup task, and updates the base station's information about the standby network element.

[0041] Reference Figure 2The user data backup method involved in this embodiment takes AMF1 network element, AMF2 network element and AMF3 network element as examples, and the specific implementation process is as follows:

[0042] (1) Configure independent channel information for each AMF network element, including the primary channel and the backup channel, as well as the corresponding Redis connection parameters.

[0043] Among them, the primary channel is the main path for the AMF network element to interact with the Redis memory database during normal operation, which is used to ensure that user data can be written to the Redis database efficiently and in real time; the backup channel exists as a redundancy mechanism. When the primary channel fails or is abnormal, the backup channel quickly takes over the work of the primary channel to ensure continuous data transmission and stable operation of the system.

[0044] Configure the corresponding Redis connection parameters for the main channel and the backup channel, including the address, port number, and authentication information of the Redis server, to ensure that the AMF network element is accurately and stably connected to the Redis database for data read and write operations.

[0045] Specifically: ① Configure the AMF1 network element as the main channel of channel 1 and the backup channel of channel 1 (which can be marked as channel 1-backup), and configure the corresponding Redis connection parameters, such as the address, port number and authentication information of the Redis server, to ensure that the AMF1 network element can accurately and stably interact with the Redis memory database through the main channel 1 or the backup channel 1-backup. ② Configure the AMF2 network element as the main channel of channel 2 and the backup channel of channel 2 (which can be marked as channel 2-backup), and configure the corresponding Redis connection parameters to ensure that AMF2 connects to the Redis database through the main channel 2 during normal operation and through the backup channel 2-backup during abnormal operation. In addition, set AMF2 as the backup network element of AMF1 so that it can subscribe to channel 1. ③ Configure the AMF3 network element as the main channel of channel 3 and the backup channel of channel 3 (which can be marked as channel 3-backup), and configure the corresponding Redis connection parameters so that AMF3 can establish a stable connection with the Redis database.

[0046] (2) The active AMF network element (assuming it is AMF1 network element) writes user data to the Redis memory database in real time through its configured active channel according to business needs.

[0047] (3) The standby AMF network element (assuming it is specifically AMF2 network element) receives data change notifications in real time by subscribing to the active channel of the active AMF network element (AMF1 network element), and synchronizes the data into its own memory library.

[0048] When the active AMF network element (AMF1 network element) writes new user data to Redis, the standby AMF network element (AMF2 network element) is immediately notified, reads the data, and stores it in its own memory library, so that the data between the standby AMF network element (AMF2 network element) and the active AMF network element (AMF1 network element) is always consistent.

[0049] (4) The OAM network element periodically sends heartbeat signals or monitors the performance indicators of the AMF network elements (specifically AMF1 network element, AMF2 network element, and AMF3 network element) to grasp the operating status of each AMF network element (specifically AMF1 network element, AMF2 network element, and AMF3 network element) in real time;

[0050] When the heartbeat signal of an AMF network element (assuming it is an AMF2 network element) times out or the performance indicators of the AMF network element are abnormal, the OAM network element determines that the AMF network element (AMF2 network element) is abnormal and starts the preset fault recovery process to ensure the reliability and stability of the system.

[0051] (5) The OAM network element sends a notification to the new standby AMF network element (assuming it is AMF3 network element) according to the pre-configured fault recovery strategy, instructing it to start monitoring and backing up the data channel that the abnormal AMF network element (AMF2 network element) is responsible for.

[0052] (6) After the original active AMF network element (AMF1 network element here) receives the fault notification from OAM (it is learned that AMF2 is abnormal and the new standby network element is AMF3), it initiates a status modification request to the base station (the specific signaling can be: AMF STATUS INDICATION), which carries the information of the new standby AMF network element (AMF3 network element). In this way, the base station can update the internal status information in time and correctly route subsequent requests to the new standby AMF network element (AMF2 network element).

[0053] (7) The new standby AMF network element (AMF3 network element) starts to read data through the subscribed original primary channel (channel 1 of AMF13 network element) and writes it into its own memory bank to complete the data backup.

[0054] After receiving the notification from the OAM network element, the new standby AMF network element immediately starts to read data through the subscribed original main channel and stores it in its own memory bank. This process continues until the new standby AMF network element (AMF3 network element) has backed up all necessary data, ensuring that it can completely take over the work of the abnormal AMF network element (AMF2 network element) and provide continuous services to users.

[0055] It should be added that, during the execution of steps (1)-(7), the OAM network element monitors the status of all AMF network elements to ensure the stable operation of the system and the consistency of data.

[0056] In summary, by adopting a user data backup method under 5G AMF POOL networking of the present invention, real-time switching of the standby network element of the AMF network element in an abnormal scenario can be realized through Redis data channel data, thereby solving the problem that the backup cannot be updated in time due to the abnormality of the standby network element.

[0057] The above specific examples are used to explain the principles and implementation methods of the present invention in detail. These examples are only used to help understand the core technical content of the present invention. Based on the above specific embodiments of the present invention, any improvements and modifications made by technicians in this technical field without departing from the principles of the present invention should fall within the scope of patent protection of the present invention.

Claims

1. A user data backup method in 5G AMF POOL networking, characterized in that: This method uses Redis channel technology to deploy an in-memory database between the AMF network element and the Redis database; Through the configured channel information, the active AMF network element writes data to Redis in real time, and the standby AMF network element performs data synchronization and backup through the pre-configured local strategy; In the same 5G AMF POOL network, different AMF network elements use different channels for data reading and writing operations when they are started, and achieve data synchronization through a subscription mechanism; when an AMF network element fails, the OAM network element detects the abnormality and notifies the new standby AMF network element to take over the data backup task, and updates the base station's information about the standby network element.

2. According to a user data backup method in 5G AMF POOL networking according to claim 1, it is characterized in that: The specific implementation process of the method is as follows: (1) Configure independent channel information for each AMF network element, including the primary channel and the backup channel, as well as the corresponding Redis connection parameters; (2) The active AMF network element writes user data to the Redis memory database in real time through its configured active channel according to business needs; (3) The standby AMF network element receives data change notifications in real time by subscribing to the active channel of the active AMF network element, and synchronizes the data to its own memory bank; (4) The OAM network element continuously monitors the status of all AMF network elements. Once an abnormality is detected in an AMF network element, the preset fault recovery process is immediately triggered; (5) The OAM network element sends a notification to the new standby AMF network element according to the pre-configured fault recovery strategy, instructing it to start monitoring and backing up the data channel responsible for the abnormal AMF network element; (6) After receiving the fault notification from OAM, the original active AMF network element initiates a status modification request to the base station, carrying the new standby AMF network element information to ensure that the base station can identify the current active and standby AMF network elements; (7) The new standby AMF network element starts to read data through the subscribed original primary channel and writes it into its own memory bank to complete the data backup.

3. According to a user data backup method in 5G AMF POOL networking according to claim 2, it is characterized in that: During the execution of steps (1)-(7), the OAM network element monitors the status of all AMF network elements to ensure the stable operation of the system and the consistency of data.

4. According to a user data backup method in 5G AMF POOL networking according to claim 2, it is characterized in that: The primary channel is the main path for AMF network elements to interact with the Redis memory database during normal operation, and is used to ensure that user data can be written to the Redis database efficiently and in real time; The backup channel exists as a redundancy mechanism. When the main channel fails or is abnormal, the backup channel quickly takes over the work of the main channel to ensure continuous data transmission and stable operation of the system. Configure the corresponding Redis connection parameters for the main channel and the backup channel, including the address, port number, and authentication information of the Redis server, to ensure that the AMF network element is accurately and stably connected to the Redis database for data read and write operations.

5. According to a method for backing up user data in a 5G AMF POOL network according to claim 2, it is characterized in that: Execute step (3). When the active AMF network element writes new user data to Redis, the standby AMF network element immediately receives the notification, reads the data, and stores it in its own memory library, so that the data between the standby AMF network element and the active AMF network element is always consistent.

6. The user data backup method in 5G AMF POOL networking according to claim 2, characterized in that: Execute step (4), the OAM network element regularly sends heartbeat signals or monitors the performance indicators of the AMF network element to grasp the operating status of each AMF network element in real time; When the heartbeat signal of an AMF network element is found to have timed out or the performance indicators of the AMF network element are abnormal, the OAM network element determines that the AMF network element is abnormal and starts the preset fault recovery process to ensure the reliability and stability of the system.

7. The user data backup method in 5G AMF POOL networking according to claim 2, characterized in that: Execute step (6). When the original AMF network element knows that it has an abnormality, it will send a status modification request to the base station based on the notification of the OAM network element. The request contains relevant information of the new backup AMF network element so that the base station can update the internal status information in time and correctly route subsequent requests to the new backup AMF network element.

8. The user data backup method in 5G AMF POOL networking according to claim 2, characterized in that: Execute step (7). After receiving the notification from the OAM network element, the new standby AMF network element immediately starts to read data through the subscribed original main channel and stores it in its own memory library. This process continues until the new standby AMF network element has backed up all necessary data, ensuring that it can completely take over the work of the abnormal AMF network element and provide continuous service to users.

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