CN113301092A - Network reconnection method, device, system and storage medium - Google Patents

Network reconnection method, device, system and storage medium Download PDF

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Publication number
CN113301092A
CN113301092A CN202010761047.5A CN202010761047A CN113301092A CN 113301092 A CN113301092 A CN 113301092A CN 202010761047 A CN202010761047 A CN 202010761047A CN 113301092 A CN113301092 A CN 113301092A
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node
edge cloud
target
changed
user plane
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CN113301092B (en
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朱松
张大江
黄瑞瑞
白常明
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Alibaba Group Holding Ltd
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Alibaba Group Holding Ltd
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Priority to PCT/CN2021/108351 priority patent/WO2022022440A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/141—Setup of application sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
    • H04L67/145—Termination or inactivation of sessions, e.g. event-controlled end of session avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/148—Migration or transfer of sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

Abstract

The embodiment of the application provides a network reconnection method, equipment, a system and a storage medium. In the embodiment of the application, the network element in the mobile network is matched with the central management and control node, so that the change of the edge cloud node and the migration of the edge cloud service are realized, and the session connection between the user terminal and the changed edge cloud node is established through the network element in the mobile network. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.

Description

Network reconnection method, device, system and storage medium
Technical Field
The present application relates to the field of internet and communication convergence technologies, and in particular, to a network reconnection method, device, system, and storage medium.
Background
In the edge cloud computing scene, it is desired to finish data processing as near as possible to a place where edge side data is generated, so as to reduce processing time delay and meet application requirements of partial short time delay.
However, in an actual edge cloud computing scenario, due to some reasons, for example, an object served by an edge cloud node has certain mobility, and for example, the edge cloud node has a fault, the resource occupancy rate is too high, and a network condition changes, a part of the edge cloud nodes cannot continue to provide services.
Disclosure of Invention
Aspects of the present disclosure provide a network reconnection method, device, system, and storage medium to improve edge cloud node change efficiency, thereby facilitating improvement of service quality of a network system.
An embodiment of the present application provides a network system, including: the method comprises the following steps: the system comprises a network element, a central control node and a plurality of edge cloud nodes in an edge cloud network in a mobile network;
a network element in the mobile network, configured to: identifying an edge cloud node of the plurality of edge cloud nodes to be altered;
the network element in the mobile network or the central management and control node is configured to: selecting a target edge cloud node from other edge cloud nodes except the edge cloud node to be changed; the central control node is used for migrating the service provided by the edge cloud node to be changed to a target edge cloud node;
and the network element in the mobile network is further configured to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
An embodiment of the present application further provides a network system, including: the system comprises a communication network, a central management and control node and a plurality of edge cloud nodes in an edge cloud network;
the communication network is configured to: identifying an edge cloud node of the plurality of edge cloud nodes to be altered;
the communication network or the central management and control node is configured to: selecting a target edge cloud node from other edge cloud nodes except the edge cloud node to be changed;
the central control node is used for migrating the service provided by the edge cloud node to be changed to a target edge cloud node;
the communication network is further configured to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
The embodiment of the application also provides a network reconnection method, which is suitable for the session management function node in the mobile network; the method comprises the following steps:
acquiring an edge cloud node to be changed in an edge cloud network;
instructing a target scheduling node to select a target edge cloud node from other edge cloud nodes in the edge cloud network; the target scheduling node is the session management function node, a central management and control node or a user plane function node in a mobile network;
and under the condition that a central control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, establishing session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
The embodiment of the application also provides a network reconnection method, which is suitable for the user plane function node in the mobile network; the method comprises the following steps:
acquiring an edge cloud node to be changed in an edge cloud network;
instructing a target scheduling node to select a target edge cloud node from other edge cloud nodes in the edge cloud network; the target scheduling node is a central control node or a user plane function node in a mobile network;
under the condition that the central management and control node migrates the service provided by the edge cloud node to be changed to a target edge cloud node; and providing the identification of the target edge cloud node for a session management function node in the mobile network so that the session management function node establishes session connection between the target edge cloud node and a user terminal corresponding to the edge cloud node to be changed.
The embodiment of the application also provides a network reconnection method, which is suitable for the central control node; the method comprises the following steps:
under the instruction of a network element in a mobile network, migrating a service provided by an edge cloud node to be changed in the edge cloud network to a target edge cloud node; the target edge cloud node is other edge cloud nodes except the edge cloud node to be changed in the edge cloud network;
and returning a service migration success notice to the network element in the mobile network so as to trigger the network element in the mobile network to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
The embodiment of the application also provides a network reconnection method, which is suitable for the central control node; the method comprises the following steps:
under the instruction of a network element in a mobile network, selecting a target edge cloud node from other edge cloud nodes of the edge cloud network except the edge cloud node to be changed;
migrating services provided by edge cloud nodes to be changed in the edge cloud network to target edge cloud nodes;
and returning a service migration success notice to the network element in the mobile network so as to trigger the network element in the mobile network to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
An embodiment of the present application further provides an electronic device, which can be implemented as a session management function node in a mobile network, where the electronic device includes: a memory and a processor; wherein the memory is used for storing a computer program;
the processor is coupled to the memory for executing the computer program for performing the steps of the network reconnecting method performed by the session management function node described above.
An embodiment of the present application further provides an electronic device, which can be implemented as a user plane function node in a mobile network, where the electronic device includes: a memory, a processor, and a communications component; wherein the memory is used for storing a computer program;
the processor is coupled to the memory for executing the computer program for performing the steps of the network reconnecting method performed by the user plane function node as described above.
The embodiment of the present application further provides an electronic device, which can be implemented as a central control node, where the electronic device includes: a memory, a processor, and a communications component; wherein the memory is used for storing a computer program;
the processor is coupled to the memory for executing the computer program for performing the steps of the network reconnection method performed by the central management and control node.
Embodiments of the present application also provide a computer-readable storage medium storing computer instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps of the network reconnection methods described above.
In the embodiment of the application, the network element in the mobile network is matched with the central management and control node, so that the change of the edge cloud node and the migration of the edge cloud service are realized, and the session connection between the user terminal and the changed edge cloud node is established through the network element in the mobile network. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1a is a schematic structural diagram of a network system according to an embodiment of the present application;
fig. 1b is a schematic block diagram of a network system according to an embodiment of the present application;
fig. 1c is a schematic structural diagram of another network system provided in the embodiment of the present application;
fig. 2-5 are schematic flow charts of a network reconnection method according to an embodiment of the present application;
fig. 6-8 are schematic structural diagrams of electronic devices provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the edge cloud computing scene, it is sought to finish data processing as near as possible to a place where edge side data is generated, so as to reduce processing time delay and meet application requirements of partial short time delay. However, in an actual edge cloud computing scenario, a part of objects served by the edge cloud nodes have certain mobility, or the network conditions of the edge cloud nodes change, which may involve a need to select a new edge cloud node for the user terminal, and how to select the new edge cloud node and establish communication between the user terminal and the new edge cloud node becomes an urgent problem to be solved.
In order to solve the above problem, in some embodiments of the present application, a network element in a mobile network is matched with a central management and control node, so as to change an edge cloud node and migrate an edge cloud service, and establish a session connection between a user terminal and the changed edge cloud node through the network element in the mobile network. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
It should be noted that: like reference numerals refer to like objects in the following figures and embodiments, and thus, once an object is defined in one figure or embodiment, further discussion thereof is not required in subsequent figures and embodiments.
Fig. 1a is a schematic structural diagram of a network system according to an embodiment of the present application. As shown in fig. 1a, the network system includes: a mobile network 10 and an edge cloud network 20. The mobile network 10 may also be referred to as a mobile communication network.
In the present embodiment, the mobile communication standard to which the mobile network 10 conforms is not limited. Alternatively, the mobile network 10 may be a 2G, 3G, 4G/LET or 5G mobile network, but may also be a mobile network of other communication standards that may emerge in the future. In this embodiment, the network element in the mobile network 10 mainly refers to a network element responsible for processing and routing of data. In some embodiments, this portion of network elements may be referred to as core network elements.
The edge cloud network 20 of the present embodiment is a cloud computing platform constructed on an edge infrastructure based on cloud computing technology and edge computing capability, and is a cloud platform having computing, networking, storage, security, and other capabilities at an edge location. The edge cloud is a relative concept corresponding to a central cloud or a traditional cloud computing platform, the edge cloud is a cloud computing platform relatively close to the terminal, or is different from the central cloud or the traditional cloud computing platform, the central cloud or the traditional cloud computing platform may include a data center with large-scale resources and concentrated positions, the network coverage of the edge cloud nodes is wider, and therefore the edge cloud nodes have the characteristic of being closer to the terminal, the resource scale of a single edge cloud node is smaller, but the number of the edge cloud nodes is large, and a plurality of edge cloud nodes form a component of the edge cloud in the embodiment. The terminal in this embodiment refers to a demand end of the cloud computing service, and may be, for example, a terminal or a user end in the internet, or a terminal or a user end in the internet of things. The edge cloud network 20 is a network constructed based on an infrastructure between a central cloud or a conventional cloud computing system and a terminal.
The edge cloud network 20 includes at least one edge cloud node 201. Preferably, the number of the edge cloud nodes 201 is plural. Plural means 2 or more. In this way, once a certain edge cloud node 201 fails, the service provided by the failed edge cloud node 201 can be migrated to other edge cloud nodes 201, so as to reduce the probability of service interruption, which is beneficial to improving the service quality of the edge cloud network 20.
Each edge cloud node 201 includes a series of edge infrastructures including, but not limited to: distributed Data Center (DC), a series of edge infrastructures including, but not limited to: a distributed Data Center (DC), a wireless room or cluster, an edge device such as a communication network of an operator, a core network device, a base station, an edge gateway, a home gateway, a computing device and/or a storage device, a corresponding network environment, and so on. It is noted that the location, capabilities, and infrastructure involved of different edge cloud nodes 201 may or may not be the same.
In the network architecture, tasks such as network forwarding, storage, computing, intelligent data analysis and the like can be placed in each edge cloud node 201 in the edge cloud network 20 for processing, and as each edge cloud node 201 is closer to a terminal, response time delay can be reduced, pressure of a central cloud or a traditional cloud computing platform can be reduced, and bandwidth cost can be reduced.
In the network system of this embodiment, a center control node 40 is further deployed, and the center control node 40 controls the edge cloud nodes 201 by using the edge cloud nodes 201 as a control object, so that the edge cloud nodes 201 can be uniformly controlled in various aspects such as resource scheduling, mirror image management, instance control, operation and maintenance, network, security, and the like, and thus, the cloud computing service is placed in each edge cloud node 201 for processing. In terms of deployment implementation, the central management and control node 40 may be deployed in one or more cloud computing data centers, or may be deployed in one or more conventional data centers, or the central management and control node 40 may also be deployed in the network system of this embodiment, and forms the network system of this embodiment together with at least one edge cloud node 201 managed by the central management and control node, which is not limited in this embodiment.
In the present embodiment, the mobile network 10 is communicatively connected to the central management node 40 and the edge cloud node 201 in the edge meta-network 20. Specifically, network elements in the mobile network 10 are communicatively connected with the central management node 40 and the edge cloud nodes 201. The user terminal 30 may access the mobile network 10, and establish a session connection between the user terminal 30 and the edge cloud node 201 through a network element of the mobile network 10, so as to implement a route between the user terminal 30 and the edge cloud node 201. The user terminal 30 refers to an object served by the edge cloud node 201. The user terminal 30 may be a consumer electronics product, such as a mobile phone, a tablet computer, a personal computer, etc., or an internet of things (IoT) device, such as a door lock, a water meter, an electricity meter, etc. After the user terminal 30 successfully accesses the mobile network 10, services provided by the mobile network 10, such as a call service, a data service, etc., may be used.
However, in practical applications, the user terminal 30 may have a certain mobility, or the network condition of the edge cloud node itself changes, and the primary edge cloud node cannot provide a service for the user terminal 30 continuously, which may involve a problem that a new edge cloud node needs to be selected for the user terminal, and how to select the new edge cloud node and establish communication between the user terminal and the new edge cloud node becomes an urgent solution.
In some embodiments, the central management and control node of the central cloud may monitor the service quality of the edge cloud node 40, and when it is found that the service quality of the edge cloud node cannot meet the requirement of the end user, the central management and control node 40 selects the edge cloud node, redeployes a corresponding service on the new edge cloud node, and then notifies the user, and the user controls the user terminal 30 to access the new edge cloud node. In the edge cloud node changing manner, the central control node 40 is required to monitor the service quality of the edge cloud node from the application layer, and the service quality reduction of the original edge cloud node is not found in time, so that a new edge cloud node cannot be switched to a service object (the user terminal 30) in time, and the service quality (QoS) of the edge cloud network is reduced.
In this embodiment, the network element in the mobile network may identify an edge cloud node to be changed in the plurality of edge cloud nodes 201. Optionally, a network element in the mobile network 10 may monitor the quality of service parameter values of the plurality of edge cloud nodes 201; and identifying the edge cloud node to be changed according to the service quality requirement of the user terminal 30 corresponding to each of the plurality of edge cloud nodes 201 and the service quality parameter value of each of the plurality of edge cloud nodes 201. Optionally, the quality of service requirements of the user terminal 30 include: the requirements of the user terminal 30 for various quality of service parameters. Wherein the quality of service parameters include at least one of: a time delay of the edge cloud node for a service request of the user terminal 30, a load of the edge cloud node, available resources, and a network quality of the edge cloud node. The resources that can be provided by the edge cloud node include: computing resources, network resources, and storage resources, etc. Correspondingly, a network element in the mobile network 10 may match the qos parameter values of the plurality of edge cloud nodes 201 with the qos requirements of the user terminals 30 corresponding to the plurality of edge cloud nodes 201, respectively, and determine whether an edge cloud node whose qos parameter value does not satisfy the qos requirement of the corresponding user terminal exists in the plurality of edge cloud nodes 201; and if so, taking the edge cloud node which does not meet the service quality requirement of the corresponding user terminal as the edge cloud node to be changed.
In the embodiment of the present application, both the network element in the mobile network 10 and the central management and control node 40 can be used as target scheduling nodes for resource scheduling. I.e. the target scheduling node may be a network element or a central managing node 40 in the mobile network 10. Fig. 1a illustrates only the target scheduling node as a network element in the mobile network 10, but is not limited thereto. For the target scheduling node, the target edge cloud node may be selected from other edge cloud nodes in the edge cloud network 20 except the edge cloud node to be changed.
Further, the central management and control node 40 may migrate the service provided by the edge cloud node to be changed to the target edge cloud node. Optionally, the central management and control node 40 controls the target edge cloud node to perform resource allocation, so as to reserve resources required by the service provided for the edge cloud node to be changed; acquiring a mirror image required by the service provided by the edge cloud node to be changed; and sending the mirror image and the configuration data to the target edge cloud node. Accordingly, the target edge cloud node may create an instance of the service provided for the edge cloud node to be changed on the reserved resources according to the mirror image and the configuration data.
Then, the network element in the mobile network 10 may establish Session (Session) connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed. In this way, the target edge cloud node can continue to provide services for the user terminal 30.
Optionally, the network element in the mobile network 10 may establish a session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed through a session creation instruction provided by the mobile network 10. The session refers to a process of communication between one user terminal 30 and a target edge cloud node. In this process, the network element in the mobile network 10 creates a session between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed, and gives a session Identifier (ID) to the target edge cloud node and the user terminal 30 by using the session creation instruction provided by the mobile network 10, and provides the session identifier to the user terminal 30. In this way, the session identifier may be carried by the request sent by the user terminal 30, and the network element in the mobile network 10 may provide the request to the target edge cloud node according to the session identifier.
In the network system provided by this embodiment, the network element in the mobile network is matched with the central management and control node, so as to change the edge cloud node and migrate the edge cloud service, and establish a session connection between the user terminal and the changed edge cloud node through the network element in the mobile network. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
On the other hand, in the embodiment, the network element of the mobile network monitors the service quality of the edge cloud node from the network layer, so that the timeliness of monitoring the service quality can be improved, the efficiency of finding the reduction of the service quality of the edge cloud node is improved, the timeliness of subsequently selecting a new edge cloud node can be improved, and the service quality of the edge cloud network can be guaranteed.
In this embodiment of the application, the target edge cloud node may be selected by a network element in the mobile network 10, or may be selected by the central management and control node 40. Alternatively, if the edge cloud node 201 in the edge cloud network 20 is provided by an operator of the mobile network 10, the selection and scheduling of the target edge cloud node may be performed by a network element in the mobile network 10, that is, the target scheduling node is a network element in the mobile network 10. If the edge cloud node 201 in the edge cloud network 20 is provided by a cloud service provider, the selection and scheduling of the target edge cloud node may be performed by the central management node 40, that is, the target scheduling node is the central management node 40. Alternatively, a management device may be provided in the network system. A target scheduling node is determined by the management device. Alternatively, the management device may provide a scheduling node configuration interface through which a target scheduling node is set by a user. Accordingly, the management device may display a scheduling node configuration interface; and responding to the configuration operation of the configuration interface of the scheduling node, and acquiring the configured scheduling node as a target scheduling node for executing the operation of selecting the target edge cloud node. The configured scheduling node may be a network element in the mobile network 10, or the central control node 40.
Further, if the configured scheduling node is a network element in the mobile network 10, the network element in the mobile network 10 may select a target edge cloud node from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network 20 when the edge cloud node to be changed is identified. Accordingly, if the configured scheduling node is the central management and control node 40, the network element in the mobile network 10 may instruct the central management and control node 40 to select a target edge cloud node from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network 20, if the edge cloud node to be changed is identified.
Optionally, the management device may also provide the configuration result to a network element of the mobile network 10. The configuration result is used to describe whether the configured scheduling node is a network element in the mobile network 10 or the central control node 40. In this way, the network element in the mobile network 10 may determine, according to the configuration result, whether to select the target edge cloud node by itself, or to give the authority to select the target edge cloud node to the central management and control node 40, that is, instruct the central management and control node 40 to select the target edge cloud node.
No matter the target scheduling node of the target edge cloud node is selected as the network element in the mobile network 10 or the central control node 40, when the target edge cloud node is selected, the target edge cloud node meeting the service quality requirement can be selected from other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of other edge cloud nodes of the edge cloud network 20 except the edge cloud node to be changed.
In some embodiments, edge cloud nodes are reserved in the edge cloud network 20, and the reserved edge cloud nodes are part of the edge cloud nodes of the edge cloud network 20. Accordingly, the network element or the central management and control node 40 in the mobile network 10 may select a target edge cloud node that meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from the edge cloud nodes reserved in the edge cloud network 20. Therefore, the method is beneficial to accelerating the selection speed of the target edge cloud node, and further accelerating the change speed of the subsequent edge cloud node.
In other embodiments, the network element or the central management and control node 40 in the mobile network 10 may obtain a correspondence between a user plane function node and an edge cloud node group in the mobile network; determining an edge cloud node group to which the edge cloud node to be changed belongs according to the corresponding relation between the user plane function node and the edge cloud node group; and selecting a target edge cloud node which meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from the edge cloud node group to which the edge cloud node to be changed belongs. The target scheduling nodes are different in implementation form, and the implementation modes for acquiring the corresponding relation between the user plane function node and the edge cloud node group are different. In this regard, description will be made in the following embodiments, which will not be detailed herein.
Optionally, when the network element in the mobile network selects the target edge cloud node, the network element in the mobile network may instruct the central management and control node 40 to migrate the service provided by the edge cloud node to be changed to the target edge cloud node when the target edge cloud node is selected.
In the case that the central management and control node 40 selects the target edge cloud node, the network element in the mobile network may provide the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameters of other edge cloud nodes in the edge cloud network 20 except the edge cloud node to be changed to the central management and control node 40. Correspondingly, the central management and control node 40 may select a target edge cloud node satisfying the quality of service requirement from the other edge cloud nodes according to the quality of service requirement of the user terminal corresponding to the edge cloud node to be changed and the quality of service parameter values of the other edge cloud nodes of the edge cloud network 20 except the edge cloud node to be changed, and provide the identifier of the target edge cloud node to the network element in the mobile network. Further, the network element in the mobile network may establish a session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed, according to the identifier of the target edge cloud node. In the present embodiment, as shown in fig. 1a, the mobile network 10 includes: a core network 101. The core network is a core part of the mobile network 10, and is an information processing center of the mobile network 10 and mainly responsible for processing and routing data. The data processing and routing functions of the core network are performed by the core network element 102. The execution logic of the network elements in the mobile network 10 may be executed by the core network element 102.
Optionally, before instructing the central management and control node 40 to migrate the service provided by the edge cloud node to be changed to the target edge cloud node, the core network element 102 may further select the target edge cloud node from other edge cloud nodes in the edge cloud network 20 except the edge cloud node to be changed. The identification of the edge cloud node to be changed by the core network element 102 may be performed by the user plane function node 102b in the core network element 102, or may be completed by the cooperation of the session management function node 102a and the user plane function node 102 b. The selection of the target edge cloud node from the other edge cloud nodes except the edge cloud node to be changed in the edge cloud network 20 may be performed by the session management function node 102a or the user plane function node 102b in the core network element 102, or may be completed by the session management function node 102a and the user plane function node 102b in cooperation.
The session management function node 102a refers to a software and hardware module, an application program, or an entity device having a session management function. The session management function node 102a may establish a session connection between a User Equipment (UE) 30 accessing the mobile network 10 and an edge cloud node 201 in the edge cloud network 20.
The user plane function node 102b refers to a software and hardware module, an application program, or an entity device having data processing and routing functions. The user plane function node 102b may forward data between the user terminal and the edge cloud node 201 based on the session connection between the user terminal 30 and the edge cloud node 201, so as to implement interaction between the user terminal 30 and the edge cloud node 201.
In this embodiment, mobile communication standards followed by mobile networks are different, and the implementation and deployment of the session management function node 102a and the user plane function node 102b are different. For example, in a 4G/LET mobile Network, the session Management function node 102a may be implemented as a session Management function module in a Mobility Management Entity (MME), a Serving Gateway (SGW), and a Packet Data Network Gateway (PGW, also called PDN Gateway). The user plane function node 102b may be implemented as a user plane function module in the SGW and PGW. For another example, in a 4G/LET mobile network, the Session Management Function node 102a may be implemented as a Session Management Function (SMF) network element; the User Plane Function node 102b may be implemented as a User Plane Function (UPF) network element. For future mobile communication standards, the session management function node 102a and the user plane function node 102b may also be implemented in other forms, which are not limited herein. Fig. 1b illustrates only a mobile network as a 5G mobile network, but the present invention is not limited thereto.
The following description exemplarily illustrates that the identification of the edge cloud node to be changed by the core network element 102 is performed by the user plane function node 102b in the core network element 102, and may also be completed by the cooperation of the session management function node 102a and the user plane function node 102 b.
Identification method 1: the user plane function node 102b identifies edge cloud nodes to be altered. The main implementation mode is as follows: each user plane function node 102b corresponds to an edge cloud node group. One edge cloud node group may include one or more edge cloud nodes 201. Plural means 2 or more. The edge cloud node 201 corresponding to each user plane function node 102b may belong to the same cloud service provider, or may belong to different cloud service providers. For the case that the edge cloud node 201 corresponding to one user plane function node 102b belongs to different cloud service providers, switching between edge cloud nodes provided by different cloud service providers can be realized.
Correspondingly, the user plane function node 102b may monitor a quality of service parameter value of an edge cloud node group corresponding to the user plane function node 102 b; and under the condition that it is monitored that the service quality parameter value in the edge cloud node group of the user plane function node 102b does not meet the service quality requirement of the corresponding user terminal, taking the edge cloud node which does not meet the service quality requirement of the corresponding user terminal as the edge cloud node to be changed.
Identification method 2: the session management function node 102a and the user plane function node 102b cooperate with each other to identify an edge cloud node to be changed. The main implementation mode is as follows: each user plane function node 102b corresponds to an edge cloud node group. One edge cloud node group may include one or more edge cloud nodes 201. Plural means 2 or more. Correspondingly, the user plane function node 102b monitors a service quality parameter value of an edge cloud node group corresponding to the user plane function node 102 b; and provides the service quality parameter value of the edge cloud node group corresponding to the user plane function node 102b to the session management function node 102 a. Correspondingly, the session management function node 102a may determine, according to a quality of service parameter value of an edge cloud node group corresponding to the user plane function node 102b and a quality of service requirement of the user terminal, whether an edge cloud node whose quality of service parameter value does not meet the quality of service requirement of the corresponding user terminal exists in the edge cloud node group; and if so, taking the edge cloud node which does not meet the service quality requirement of the corresponding user terminal as the edge cloud node to be changed.
Further, the session management function node 102a or the user plane function node 102b may select a target edge cloud node from other edge cloud nodes of the edge cloud network 20 except the edge cloud node to be changed. In the following, an exemplary description is given of an embodiment in which the session management function node 102a or the user plane function node 102b selects a target edge cloud node.
Embodiment 1: a target edge cloud node is selected by the session management function node 102 a. The main implementation mode is as follows: the session management function node 102a may select a target edge cloud node that meets the service quality requirement from other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes in the edge cloud network 20 except the edge cloud node to be changed. The following describes a specific embodiment of selecting a target edge cloud node by the session management function node 102 a:
alternative embodiment 1A: edge cloud nodes are reserved in the edge cloud network 20, and the reserved edge cloud nodes are part of the edge cloud nodes of the edge cloud network 20. Accordingly, the session management function node 102a may select a target edge cloud node that meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from the edge cloud nodes reserved in the edge cloud network 20. Therefore, the method is beneficial to accelerating the selection speed of the target edge cloud node, and further accelerating the change speed of the subsequent edge cloud node.
Alternative embodiment 1B: the session management function node 102a maintains a correspondence between the user plane function node and the edge cloud node group. The edge cloud node 201 corresponding to each user plane function node 102b may belong to the same cloud service provider, or may belong to different cloud service providers. For the case that the edge cloud node 201 corresponding to one user plane function node 102b belongs to different cloud service providers, switching between edge cloud nodes provided by different cloud service providers can be realized.
Or, in some embodiments, edge cloud nodes whose performance parameters are within a certain range may be divided into one edge cloud node group according to the performance parameters of the edge cloud nodes, so as to obtain a plurality of edge cloud node groups. The performance parameters of the edge cloud nodes comprise: the time delay of the response of the edge cloud node to the service, the computing power, the scale, the host type, etc., but are not limited thereto. For example, taking the time delay as an example, edge cloud nodes with time delays at the same time delay gradient may be divided into an edge cloud node group according to the time delay parameters of the edge cloud nodes. Each user plane function node 102b corresponds to an edge cloud node group. Or, according to the performance parameters of the edge cloud nodes corresponding to each user plane function node 102b, 1 or more edge cloud nodes are respectively taken from the edge cloud nodes of each performance gradient to form an edge cloud node group, and each user plane function node 102b corresponds to one edge cloud node group; and so on.
For the mobile network 10, as shown in fig. 1b, it further includes: AN Access Network (AN) 102. The Access Network 103 may also be a Radio Access Network (RAN). The access network 103 mainly comprises base stations that may provide communication or data processing services for user terminals 30 accessing the mobile network 10. The base station interfaces with a user plane function node 102 b. Wherein one user plane function node 102 may interface with one or more base stations. Plural means 2 or more. The edge cloud node corresponding to each user plane function node 102 may be deployed in a machine room to which it is docked. Preferably, according to the performance parameters of the edge cloud nodes, the edge cloud nodes with performance parameters within a certain range are divided into an edge cloud node group to obtain a plurality of edge cloud node groups. Each user plane function node 102b corresponds to an edge cloud node group. In this way, since the edge cloud nodes in the edge cloud node group have the same or similar performance, it is possible to ensure that the edge cloud nodes are not changed when the user terminal 30 moves within the same edge cloud node group. However, if the current edge cloud node corresponding to the user terminal 30 fails, is overloaded, or the like, the target edge cloud node may be selected from the edge cloud node group corresponding to the edge cloud node to be changed, which is helpful to improve the switching efficiency of the edge cloud node.
Correspondingly, the session management function node 102a may determine an edge cloud node group to which an edge cloud node to be changed belongs according to a maintained correspondence between the user plane function node and the edge cloud node group; and selecting a target edge cloud node which meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from the edge cloud node group to which the edge cloud node to be changed belongs.
In the above optional embodiments 1A and 1B, the session management function node 102a may provide the identifier of the edge cloud node to be changed and the identifier of the target edge cloud node to the central management node 40. The identification of an edge cloud node may be information that uniquely identifies an edge cloud node. Alternatively, the identification of the edge cloud node may be an IP address, a number, a MAC address, or the like of the edge cloud node. Alternatively, session management function node 102a may send a node change notification to central managing node 40. The node change notification includes an identification of the edge cloud node to be changed and an identification of the target edge cloud node. Correspondingly, the central management and control node 40 may determine, according to the identifier of the edge cloud node to be changed, a service provided by the edge cloud node to be changed; and migrating the service provided by the edge cloud node to be changed to the edge cloud node corresponding to the identifier of the target edge cloud node (namely the target edge cloud node).
Further, after completing the migration of the service provided by the edge cloud node to be changed to the target edge cloud node, the central management and control node 40 may provide a notification of successful service migration to the session management node 102 a. The session management node 102a may establish a session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed, in response to the service migration success notification. The user plane function node 102b may implement routing between the target edge cloud node and the user terminal 30 based on the session connection between the target edge cloud node and the user terminal 30.
Alternative embodiment 1C: the session management function node 102a may instruct the central management and control node 40 to select a target edge cloud node that meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network 20.
In alternative embodiment 1C, the session management function node 102a may provide the service quality requirement of the edge cloud node to be changed to the central management and control node 40. Optionally, a node change request is provided to the central control node 40, where the node change request includes a quality of service requirement of a user terminal corresponding to the edge cloud node to be changed. Accordingly, the central management and control node 40 may obtain, in response to the node change request, the service quality parameter values of other edge cloud nodes in the edge cloud network 20 except the edge cloud node to be changed. Wherein the quality of service parameters of the other edge cloud nodes may be provided by the user plane function node 102b or the session management function node 102 a. Further, the central management and control node 40 may select a target edge cloud node satisfying the service quality requirement from the other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes; and provides the identification of the target edge cloud node to the session management function node 102 a.
Further, before the central management and control node 40 provides the identifier of the target edge cloud node to the session management function node 102a, the central management and control node 40 may further determine, according to the identifier of the edge cloud node to be changed, a service provided by the edge cloud node to be changed. The identifier of the edge cloud node to be changed may be carried in the node change request, or may be provided by a separate signaling. Further, the central management and control node 40 may migrate the service provided by the edge cloud node to be changed to the edge cloud node corresponding to the identifier of the target edge cloud node (i.e., the target edge cloud node). Further, after completing the migration of the service provided by the edge cloud node to be changed to the target edge cloud node, the central management and control node 40 may provide a notification of successful service migration to the session management node 102 a. The session management node 102a may establish a session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed, in response to the service migration success notification. The user plane function node 102b may implement routing between the target edge cloud node and the user terminal 30 based on the session connection between the target edge cloud node and the user terminal 30.
Embodiment 2: a target edge cloud node is selected by the user plane function node 102 b. The main implementation mode is as follows: the user plane function node 102b may select a target edge cloud node satisfying the service quality requirement from other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes in the edge cloud network 20 except the edge cloud node to be changed. The following describes a specific embodiment of selecting a target edge cloud node by the user plane function node 102 b:
alternative embodiment 2A: edge cloud nodes are reserved in the edge cloud network 20, and the reserved edge cloud nodes are part of the edge cloud nodes of the edge cloud network 20. Accordingly, the user plane function node 102b may select a target edge cloud node that meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from the edge cloud nodes reserved in the edge cloud network 20.
Alternative embodiment 2B: the user plane function node 102b may obtain a correspondence between the user plane function node and the edge cloud node group. The user plane function node 102b may maintain a corresponding relationship between the user plane function node and the edge cloud node group. Alternatively, the user plane function node 102b may receive the correspondence between the user plane function node and the edge cloud node group provided by the session management node 102 a. Correspondingly, the user plane function node 102b may determine an edge cloud node group to which the edge cloud node to be changed belongs according to a correspondence between the user plane function node and the edge cloud node group; and selecting a target edge cloud node which meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from the edge cloud node group to which the edge cloud node to be changed belongs.
In the above optional embodiments 2A and 2B, the user plane function node 102B may provide the identifier of the edge cloud node to be changed and the identifier of the target edge cloud node to the central management node 40. The identification of an edge cloud node may be information that uniquely identifies an edge cloud node. Alternatively, the identification of the edge cloud node may be an IP address, a number, a MAC address, or the like of the edge cloud node. Alternatively, user plane function node 102b may send a node change notification to central administration node 40. The node change notification includes an identification of the edge cloud node to be changed and an identification of the target edge cloud node. Correspondingly, the central management and control node 40 may determine, according to the identifier of the edge cloud node to be changed, a service provided by the edge cloud node to be changed; and migrating the service provided by the edge cloud node to be changed to the edge cloud node corresponding to the identifier of the target edge cloud node (namely the target edge cloud node).
Further, after completing the migration of the service provided by the edge cloud node to be changed to the target edge cloud node, the central management and control node 40 may provide a notification of successful service migration to the user plane function node 102 b. The user plane function node 102b may request, in response to the service migration success notification, the session management function node 102a to establish a session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed. Optionally, the user plane function node 102b may provide an identification of the target edge cloud node to the session management function node 102 a. For the case where the edge cloud node to be changed is identified by the user plane function node 102b, the user plane function node 102b may provide an identification of the edge cloud node to be changed to the session management function node 102 a. The session management function node 102a may establish a session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed according to the identifier of the target edge cloud node and the identifier of the edge cloud node to be changed. The user plane function node 102b may implement routing between the target edge cloud node and the user terminal 30 based on the session connection between the target edge cloud node and the user terminal 30.
Alternative embodiment 2C: the user plane function node 102b may instruct the central management and control node 40 to select a target edge cloud node that meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network 20.
In alternative embodiment 2C, the user plane function node 102b may provide the service quality requirement of the edge cloud node to be changed to the central management and control node 40. Optionally, the user plane function node 102b provides a node change request to the central control node 40, where the node change request includes a service quality requirement of a user terminal corresponding to an edge cloud node to be changed. Accordingly, the central management and control node 40 may obtain, in response to the node change request, the service quality parameter values of other edge cloud nodes in the edge cloud network 20 except the edge cloud node to be changed. Wherein the quality of service parameters of the other edge cloud nodes may be provided by the user plane function node 102b or the session management function node 102 a. Further, the central management and control node 40 may select a target edge cloud node satisfying the service quality requirement from the other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes; and provides the identification of the target edge cloud node to the user plane function node 102 b.
Further, before the central control node 40 provides the identifier of the target edge cloud node to the user plane function node 102b, the central control node 40 may further determine, according to the identifier of the edge cloud node to be changed, a service provided by the edge cloud node to be changed. The identifier of the edge cloud node to be changed may be carried in the node change request, or may be provided by a separate signaling. Further, the central management and control node 40 may migrate the service provided by the edge cloud node to be changed to the edge cloud node corresponding to the identifier of the target edge cloud node (i.e., the target edge cloud node). Further, after completing the migration of the service provided by the edge cloud node to be changed to the target edge cloud node, the central management and control node 40 may provide a notification of successful service migration to the user plane function node 102 b. The user plane function node 102b may request, in response to the service migration success notification, the session management function node 102a to establish a session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed. For the process of the session management function node 102a establishing the session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed, reference may be made to the relevant contents of the above embodiments, and details are not described herein again. The user plane function node 102b may implement routing between the target edge cloud node and the user terminal 30 based on the session connection between the target edge cloud node and the user terminal 30.
Optionally, in optional embodiment 1C and optional embodiment 2C, when the central control node 102 selects a target edge cloud node, a target edge cloud node that meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed may be selected from edge cloud nodes reserved in the edge cloud network 20; and the reserved edge cloud nodes are part of the edge cloud nodes in the plurality of edge cloud nodes.
Or, the central management and control node 40 may also obtain a corresponding relationship between the user plane function node and the edge cloud node group; determining an edge cloud node group to which the edge cloud node to be changed belongs according to the corresponding relation between the user plane function node and the edge cloud node group; then, a target edge cloud node satisfying the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed is selected from the edge cloud node group to which the edge cloud node to be changed belongs. The correspondence between the user plane function node and the edge cloud node group may be provided by the user plane function node 102b or the session management function node 102 a. Optionally, if the correspondence between the user plane function node and the edge cloud node group is provided by the session management function node 102a, the session management function node 102a may carry the correspondence in the node change request; alternatively, a signaling flow different from the node change request may be adopted to provide the central management and control node 40 with the correspondence between the user plane function node and the edge cloud node group.
In some embodiments, for the central control node 40, if other edge cloud nodes except the edge cloud node to be changed in the edge cloud network 20 do not meet the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed, that is, no edge cloud node meeting the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed exists in the other edge cloud nodes, the central control node 40 may further monitor whether a new edge cloud node is added to the edge cloud network 20; and when it is monitored that a new edge cloud node joins the edge cloud network 20, selecting an edge cloud node that meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from the new edge cloud node as a target edge cloud node.
Further, the central management and control node 40 may migrate the service provided by the edge cloud node to be changed to the target edge cloud node. Optionally, central policing node 40 may also notify session management function node 102b to reselect a new user plane function node. The specific implementation of the session management function node 102b selecting the user plane management node will be described below, and will not be described herein again.
Correspondingly, if the central management and control node 40 does not detect that a new edge cloud node is added to the edge cloud network 20 and/or the new edge cloud node does not meet the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed, the central management and control node 40 may notify the session management function node 102b to perform session reselection. And if the session reselection of the session management function node 102b is successful, taking the edge cloud node selected by the session reselection as a target edge cloud node. Optionally, when performing session reselection, the session management function node 102b may select an edge cloud node whose current performance meets a set condition from the edge cloud network 20 as a target edge cloud node. For example, the edge cloud node with the best current performance may be selected from the edge cloud network 20 as the target edge cloud node. Accordingly, if the session reselection by the session management function node 102b fails, the edge cloud node to be changed continues to provide services for the user terminal 30.
In the embodiment of the present application, the mobile network 10 further includes: AN Access Network (AN) 102. The Access Network 103 may also be a Radio Access Network (RAN). The access network 103 mainly comprises base stations that may provide communication or data processing services for user terminals 30 accessing the mobile network 10. As shown in fig. 1b, the base station interfaces with a user plane function node 102 b. Wherein one user plane function node 102 may interface with one or more base stations. Plural means 2 or more. One session management function node 102a may manage 1 or more user plane function nodes 102 b. In the case where one session management function node 102a can manage multiple user plane function nodes 102b, the session management function node 102a can also replace the docked user plane function node 102b with a base station. When the user plane function node 102b is changed, the session management function node 102a may select a target edge cloud node, and for a specific embodiment, reference may be made to relevant contents in embodiment 1 and optional embodiments 1A to 1C, which is not described herein again.
In the present embodiment, the session management function node 102a identifies a user plane function node to be changed among the plurality of user plane function nodes 102 b. Alternatively, the session management function node 102a may monitor the performance of multiple user plane function nodes 102 b; and determining the user plane functional node which does not meet the performance requirement of the butted base station as the user plane functional node to be changed under the condition that the performance of the plurality of user plane functional nodes 102b is monitored to not meet the performance requirement of the butted base station. The user plane functional node 102b that does not meet the performance requirement of the docked base station may be: the user plane function node 102b fails, and/or the calculation of the base station to which the user plane function node 102b is connected overflows, and/or the user terminal 30 moves out of the coverage of the base station to which the user plane function node 102b is connected, that is, the user terminal 30 accesses the base station to which other user plane function nodes are connected.
Further, the session management function node 102a may select a target user plane function node from the other user plane function nodes. Alternatively, the session management function node 102a may select, according to the performance of the plurality of user plane function nodes 102b, a user plane function node that meets the performance requirement of the base station to which the user plane function node to be changed is docked, from among other user plane function nodes except the user plane function node to be changed, as the target user plane function node. Wherein the performance of the user plane function node 102b comprises at least one of: the operational status of the user plane function node 102b, the load status of the user plane function node 102b, the computing power, the storage power, and the network quality, among others. The computing power is mainly expressed as the performance of computing resources such as a CPU or a GPU.
Further, after the session management function node 102a selects the target user plane function node 102b, a communication connection between the session management function node 102a and the target user plane function node 102b may be established. Further, in order to enable the edge cloud network 20 to continue providing services for the user terminal 30, a communication connection between the target user plane function node 102b and the edge cloud node 201 needs to be established. Several embodiments for establishing a communication connection between the target user plane function node 102b and the edge cloud node 201 are exemplified below.
Embodiment A: after selecting the target user plane function node, the session management function node 102a may provide the identifier of the edge cloud node to be changed to the target user plane function node. Therefore, the target user plane function node can establish communication between the target user plane function node and the edge cloud node to be changed according to the identification of the edge cloud node to be changed. Since the session management node 102a has already established the session connection between the edge cloud node to be changed and the user terminal 30 served thereby, after establishing the communication between the target user plane function node and the edge cloud node to be changed, the target user plane function node can implement the routing between the edge cloud node to be changed and the user terminal 30 served thereby based on the session connection between the edge cloud node to be changed and the user terminal 30 served thereby.
In embodiment a, the session management function node 102a does not need to notify the central management and control node 40 to redeploy the service provided by the primary edge cloud node, and also does not need to interact with the central management and control node 40, so that the probability of service interruption can be reduced, and the service quality of the edge cloud network can be provided.
Embodiment B: after the session management function node 102a selects the target user plane function node, a target edge cloud node can be selected from the edge cloud nodes corresponding to the user plane function node; instructing the central control node 40 to migrate the service provided by the edge cloud node to be changed to the target edge cloud node; then, a session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed is established. In this way, the target user plane function node may implement routing between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed based on session connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed. For a specific implementation manner in which the session management function node 102a instructs the center management and control node 40 to migrate the service provided by the edge cloud node to be changed to the target edge cloud node, and a specific implementation manner in which the center management and control node 40 migrates the service provided by the edge cloud node to be changed to the target edge cloud node, reference may be made to relevant contents of the above embodiments, and details are not described here again.
In embodiment B, the session management function node 102a may select a target edge cloud node from the edge cloud nodes corresponding to the user plane function node, or may instruct the target user plane function node or the central control node 40 to select a target edge cloud node from the edge cloud nodes corresponding to the user plane function node. The session management function node 102a indicates a target user plane function node or a central management and control node 40, and selects a target edge cloud node from edge cloud nodes corresponding to the target user plane function node, and the session management function node 102a can provide the target user plane function node with a service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed, so that the target user plane function node can select a target edge cloud node satisfying the service quality requirement from the edge cloud nodes corresponding to the target user plane function node according to the service quality parameter of the edge cloud node corresponding to the target user plane function node and the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed. For a specific implementation manner that the session management function node 102a selects a target edge cloud node from the edge cloud nodes corresponding to the user plane function node, indicates the central control node 40, and selects a target edge cloud node from the edge cloud nodes corresponding to the target user plane function node, reference may be made to relevant contents of the foregoing embodiments, which are not described herein again.
Embodiment C: and establishing communication between the target user plane function node and the user plane function node to be changed. Since the communication connection between the user plane function node to be changed and the edge cloud node corresponding thereto is already present, the communication between the target user plane function node and the user plane function node to be changed is established, and the communication between the target user plane function node and the edge cloud node corresponding to the user plane function node to be changed can be established, so that the target user plane function node can realize the routing between the edge cloud node corresponding to the user plane function node to be changed and the user terminal 30 corresponding to the edge cloud node based on the session connection between the edge cloud node corresponding to the user plane function node to be changed and the user terminal 30 corresponding to the edge cloud node.
In embodiment C, the session management function node 102a does not need to notify the central management and control node 40 to redeploy the service provided by the primary edge cloud node, which can reduce the probability of service interruption and provide the service quality of the edge cloud network. However, since the communication between the target user plane function node and the edge cloud node corresponding to the user plane function node to be changed needs to be relayed by the user plane function to be changed, the time delay of the service provided by the edge cloud network 20 to the user terminal 30 served by the edge cloud node corresponding to the user plane function node to be changed may be increased.
It should be noted that, in the foregoing embodiments, the mobile network includes the network element related to the embodiments of the present application only, and it is not meant that the mobile network includes only the network element shown in the embodiments of the present application. For example, as shown in fig. 1b, for a 5G mobile network, the core network element 102 further includes: an Access and Mobility Management Function (AMF) network element is mainly responsible for encryption and security of Non-Access Stratum (NAS) messages, registration, Access, Mobility, authentication, short message passing-through and other functions. Further, the mobile network may further include: an Authentication Server Function (AUSF), a Unified Data Management (UDM), a Network open Function (NEF), a Network Slice Selection Function (NSSF), a Network storage Function (NF replication Function, NRF), a Policy Control Function (PCF), an Application Function (AF), and other Network elements.
In the embodiment of the application, the user terminal can communicate with the edge cloud network through other communication networks besides the mobile network. For example, the edge cloud network is communicated with through a communication network such as a WiFi network or a limited network. Accordingly, as shown in fig. 1c, an embodiment of the present application further provides a network system, where the network system includes: a communication network S10 and an edge cloud network S20. The communication network S10 may be a wired or wireless communication network. The wireless communication network may be a WiFi network, a mobile network, or a combination thereof. For a description of the mobile network and the edge cloud network S20, reference may be made to the related contents of the above embodiments, and details are not repeated herein.
In the present embodiment, the communication network S10 is communicatively connected to the edge cloud node S201 in the edge cloud network S20. For the description of the edge cloud node and the user terminal, reference may be made to the relevant contents of the above embodiments, which are not described herein again. The user terminal S30 can establish a session between the user terminal S30 and the edge cloud node S201 through the network element of the communication network S10 by accessing the communication network S10, and implement a route between the user terminal 3S0 and the edge cloud node S201.
In practical applications, the user terminal 30 may have a certain mobility, or the network condition of the edge cloud node itself changes, and the primary edge cloud node cannot provide a service for the user terminal 30 continuously, which may involve a problem that how to select a new edge cloud node for the user terminal and how to establish communication between the user terminal and the new edge cloud node become to be solved urgently.
In order to solve the above problem, in the present embodiment, the communication network S10 may identify an edge cloud node to be changed among the plurality of edge cloud nodes S201. Optionally, the communication network S10 may monitor quality of service parameter values of the plurality of edge cloud nodes S201; and identifying the edge cloud node to be changed according to the service quality requirement of the user terminal 30 corresponding to each of the plurality of edge cloud nodes S201 and the service quality parameter value of the plurality of edge cloud nodes S201, which is not described herein again.
In the embodiment of the present application, both the communication network S10 and the central control node S40 can be used as target scheduling nodes for resource scheduling. That is, the target scheduling node may be the communication network S10 or the central management node S40. Fig. 1a illustrates only the target scheduling node as the central policing node S40, but this is not a limitation. For the target scheduling node, the target edge cloud node may be selected from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network S20. For a description of a specific implementation manner of selecting a target edge cloud node by a target scheduling node and an implementation form of the target scheduling node, reference may be made to relevant contents of the above embodiments, and details are not described here. Alternatively, if the communication network S10 is a WiFi network. The target scheduling node may be an Access Point (AP) in a WiFi network, or a Distribution System (DS). The distribution system connects a plurality of basic service sets through the AP. Wherein, the basic service set can be composed of an access point and a plurality of Stations (STA); or, consist of several sites. Several means a minimum of two. The station has a WIFI communication function and is connected to a terminal device in a wireless network, such as a mobile phone, a tablet computer, a notebook computer, and the like.
Further, the central management and control node S40 may migrate the service provided by the edge cloud node to be changed to the target edge cloud node. For a specific implementation manner of migrating the service provided by the edge cloud node to be changed to the target edge cloud node by the central management and control node S40, reference may be made to the related contents of the above system embodiment, and details are not described herein again.
Thereafter, the communication network S10 may establish a Session (Session) connection between the target edge cloud node and the user terminal 30 corresponding to the edge cloud node to be changed. In this way, the target edge cloud node can continue to provide services for the user terminal 30.
In the network system provided by this embodiment, the communication network is mutually matched with the central management and control node, so as to change the edge cloud node and migrate the edge cloud service, and establish session connection between the user terminal and the changed edge cloud node through a network element in the mobile network. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
On the other hand, in the embodiment, the service quality of the edge cloud node is monitored from the network layer by the communication network, so that the timeliness of monitoring the service quality can be improved, the efficiency of finding the reduction of the service quality of the edge cloud node is improved, the timeliness of subsequently selecting a new edge cloud node can be improved, and the service quality of the edge cloud network can be guaranteed.
In addition to the network system provided in the foregoing embodiment, the present embodiment also provides a network reconnection method, and an exemplary description is made below from the perspective of the session management function node, the user plane function node, and the central management and control node, respectively. The implementation forms and the deployment modes of the session management function node, the user plane function node, and the central management and control node can all refer to the relevant contents of the above system embodiments, and are not described herein again.
Fig. 2 is a flowchart illustrating a network reconnection method according to an embodiment of the present application. The method is suitable for the session management function node in the mobile network. As shown in fig. 2, the method includes:
201. and acquiring edge cloud nodes to be changed in the edge cloud network.
202. The target scheduling node is instructed to select a target edge cloud node from other edge cloud nodes in the edge cloud network; the target scheduling node is a session management node, a central management and control node or a user plane function node in a mobile network.
203. And under the condition that the central control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, establishing session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
In step 201 of this embodiment, the session management function node may obtain an edge cloud node to be changed in the edge cloud network. Optionally, an optional implementation manner of step 201 is: the session management node may identify an edge cloud node in the edge cloud network to be altered. Optionally, the user plane function node may monitor a quality of service parameter value of an edge cloud node group corresponding to the user plane function node; and providing the service quality parameter value of the edge cloud node group corresponding to the user plane function node to the session management function node. Correspondingly, the session management function node can judge whether an edge cloud node with a service quality parameter value which does not meet the service quality requirement of the corresponding user terminal exists in the edge cloud node group according to the service quality parameter value of the edge cloud node group corresponding to the user plane function node and the service quality requirement of the user terminal; and if so, taking the edge cloud node which does not meet the service quality requirement of the corresponding user terminal as the edge cloud node to be changed.
Or the user plane function node in the mobile network identifies the edge cloud node to be changed in the edge cloud network, and provides the identifier of the edge cloud node to be changed to the session management function node. For a specific implementation of the user plane function node identifying the edge cloud node to be changed, reference may be made to relevant contents in the identification manner 1 in the foregoing system embodiment, and details are not described herein again. Accordingly, another alternative implementation of step 201 is: and receiving an identifier of the edge cloud node to be changed, which is provided by the user plane function node, and determining the edge cloud node corresponding to the identifier as the edge cloud node to be changed.
Further, in step 202, the target scheduling node is instructed to select a target edge cloud node from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network. The target scheduling node may be a session management function node, or may also be a central control node or a user plane function node in a mobile network.
Then, in step 203, a session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed may be established. In this way, the target edge cloud node can continue to provide services for the user terminal.
In this embodiment, if the target scheduling node is a session management node, the session management node may instruct the central management and control node to migrate the service provided by the edge cloud node to be changed to the target edge cloud node. The target edge cloud node is other edge cloud nodes except the edge cloud node to be changed in the edge cloud network. Accordingly, the central management and control node can respond to the indication of the session management function node and migrate the service provided by the edge cloud node to be changed to the target edge cloud node. For a specific implementation manner in which the central management and control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, reference may be made to relevant contents of the above system embodiment, and details are not described here again. If the target scheduling node is a user plane function node in the mobile network, the user plane function node can respond to the indication of the session management node and select a target edge cloud node from other edge cloud nodes of the edge cloud network except the edge cloud node to be changed; and instructing the central management and control node to migrate the service provided by the edge cloud node to be changed to the target edge cloud node. Correspondingly, the user plane function node can also provide the identification of the target edge cloud node to the session management function node, and the session management function node establishes a session between the user terminal corresponding to the edge cloud node to be changed and the target edge cloud node based on the identification of the target edge cloud node. If the target scheduling node is a central control node, the central control node can respond to the indication of the session management function node and select a target edge cloud node from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network; and migrating the service provided by the edge cloud node to be changed to the target edge cloud node. The identification of the target edge cloud node is then provided to the session management node. And the session management node establishes session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed based on the identifier of the target edge cloud node. In this way, the target edge cloud node can continue to provide services for the user terminal.
In this embodiment, the session management function node in the mobile network is matched with the central management and control node, so as to change the edge cloud node and migrate the edge cloud service, and establish a session connection between the user terminal and the changed edge cloud node. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
On the other hand, in the embodiment, the session management function node of the mobile network monitors the service quality of the edge cloud node from the network layer, so that the timeliness of monitoring the service quality can be improved, the efficiency of finding the reduction of the service quality of the edge cloud node is improved, the timeliness of subsequently selecting a new edge cloud node can be further improved, and the service quality of the edge cloud network is favorably ensured.
In this embodiment, the session management node may select a target edge cloud node from other edge cloud nodes in the edge cloud network except the edge cloud node to be changed. The specific implementation mode is as follows: and selecting a target edge cloud node meeting the service quality requirement from other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of other edge cloud nodes except the edge cloud node to be changed in the edge cloud network. The following describes a specific embodiment in which the session management function node selects the target edge cloud node:
alternative embodiment 1A: edge cloud nodes are reserved in the edge cloud network, and the reserved edge cloud nodes are partial edge cloud nodes of the edge cloud network. Correspondingly, the session management function node can select a target edge cloud node which meets the service quality requirement of the user terminal corresponding to the edge cloud node to be changed from the edge cloud nodes reserved in the edge cloud network. Therefore, the method is beneficial to accelerating the selection speed of the target edge cloud node, and further accelerating the change speed of the subsequent edge cloud node.
Alternative embodiment 1B: the session management function node maintains the corresponding relation between the user plane function node and the edge cloud node group. The session management function node can determine an edge cloud node group to which the edge cloud node to be changed belongs according to the maintained corresponding relationship between the user plane function node and the edge cloud node group; and selecting a target edge cloud node which meets the service quality requirement of the user terminal corresponding to the edge cloud node to be changed from the edge cloud node group to which the edge cloud node to be changed belongs.
In the above optional embodiments 1A and 1B, the session management function node may provide the identifier of the edge cloud node to be changed and the identifier of the target edge cloud node to the central management node. Optionally, the session management function node may send a node change notification to the central management and control node. The node change notification includes an identification of the edge cloud node to be changed and an identification of the target edge cloud node. Correspondingly, the central control node can determine the service provided by the edge cloud node to be changed according to the identifier of the edge cloud node to be changed; and migrating the service provided by the edge cloud node to be changed to the edge cloud node corresponding to the identifier of the target edge cloud node (namely the target edge cloud node).
Further, after the central management and control node completes the migration of the service provided by the edge cloud node to be changed to the target edge cloud node, a service migration success notification can be provided for the session management node. The session management node can respond to the service migration success notification and establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed. The user plane function node can realize routing between the target edge cloud node and the user terminal based on session connection between the target edge cloud node and the user terminal.
Alternative embodiment 1C: the session management function node can instruct the center management and control node to select a target edge cloud node which meets the service quality requirement of the user terminal corresponding to the edge cloud node to be changed from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network.
In optional embodiment 1C, the session management function node may provide the service quality requirement of the edge cloud node to be changed to the central management and control node. Optionally, a node change request is provided to the central control node, where the node change request includes a service quality requirement of a user terminal corresponding to an edge cloud node to be changed. Correspondingly, the central management and control node can respond to the node change request and acquire the service quality parameter values of other edge cloud nodes except the edge cloud node to be changed in the edge cloud network. Further, the central control node may select a target edge cloud node satisfying the service quality requirement from the other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes; and providing the identification of the target edge cloud node to the session management function node.
Further, before the central control node provides the identifier of the target edge cloud node to the session management function node, the central control node may also determine the service provided by the edge cloud node to be changed according to the identifier of the edge cloud node to be changed. The identifier of the edge cloud node to be changed may be carried in the node change request, or may be provided by a separate signaling. Further, the central management and control node may migrate the service provided by the edge cloud node to be changed to an edge cloud node corresponding to the identifier of the target edge cloud node (i.e., the target edge cloud node). Further, after the central management and control node completes the migration of the service provided by the edge cloud node to be changed to the target edge cloud node, a service migration success notification can be provided for the session management node. The session management node can respond to the service migration success notification and establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed. The user plane function node 1 may implement routing between the target edge cloud node and the user terminal based on session connection between the target edge cloud node and the user terminal.
Further, in step 203, an optional implementation manner of establishing a session connection between the target edge cloud node and the user terminal is as follows: determining a user terminal corresponding to the edge cloud node to be changed according to the identifier of the edge cloud node to be changed; and establishing session connection between the target edge cloud node and the user terminal according to the identifier of the user terminal corresponding to the edge cloud node to be changed and the identifier of the target edge cloud node.
In an embodiment of the present application, the mobile network further includes: and (4) accessing the network. The access network mainly comprises a base station and can provide communication or data processing services for the user terminal accessed to the mobile network. The base station is in butt joint with the user plane function node. Wherein one user plane function node may interface with one or more base stations. Plural means 2 or more. One session management function node may manage 1 or more user plane function nodes. In the case that one session management function node can manage a plurality of user plane function nodes, the session management function node can also replace the docked user plane function node for the base station. In a case that the user plane function node is changed, the session management function node may select a target edge cloud node, and for a specific embodiment, reference may be made to related contents in embodiment 1 and optional embodiments 1A to 1C, which are not described herein again.
In this embodiment, the session management function node may identify a user plane function node to be changed among the plurality of user plane function nodes. Optionally, the session management function node may monitor the performance of a plurality of user plane function nodes; and under the condition that the performance of the plurality of user plane function nodes is monitored to not meet the performance requirement of the butted base station, determining the user plane function node which does not meet the performance requirement of the butted base station as the user plane function node to be changed. The user plane function node that does not meet the performance requirement of the docked base station may be: the user plane function node is in fault, and/or the calculation of the user plane function node aiming at the base station which is in butt joint with the user plane function node overflows, and/or the user terminal moves out of the coverage range of the base station which is in butt joint with the user plane function node, namely the user terminal is accessed into the base station which is in butt joint with other user plane function nodes, and the like.
Further, the session management function node may select a target user plane function node from the other user plane function nodes. Optionally, the session management function node may select, according to the performance of the plurality of user plane function nodes, a user plane function node that meets the performance requirement of the base station to which the user plane function node to be changed is docked, from among other user plane function nodes except the user plane function node to be changed, as the target user plane function node. Wherein the performance of the user plane function node comprises at least one of: the operation state of the user plane function node, the load condition of the user plane function node, the computing capacity, the storage capacity, the network quality and the like. The computing power is mainly expressed as the performance of computing resources such as a CPU or a GPU.
Further, after the session management function node selects the target user plane function node, a communication connection between the session management function node and the target user plane function node may be established. Further, in order to enable the edge cloud network to continue providing services for the user terminal, a communication connection between the target user plane function node and the edge cloud node needs to be established. Several embodiments for establishing a communication connection between a target user plane function node and an edge cloud node are exemplified below.
Embodiment A: after the session management function node selects the target user plane function node, the identifier of the edge cloud node to be changed can be provided for the target user plane function node, so that the target user plane function node establishes communication between the target user plane function node and the edge cloud node to be changed according to the identifier of the edge cloud node to be changed. Therefore, the target user plane function node can establish communication between the target user plane function node and the edge cloud node to be changed according to the identification of the edge cloud node to be changed.
In the embodiment a, the session management function node does not need to notify the central control node to redeploy the service provided by the original edge cloud node, and does not need to interact with the central control node, so that the probability of service interruption can be reduced, and the service quality of the edge cloud network can be provided.
Embodiment B: after the session management function node selects the target user plane function node, a target edge cloud node can be selected from the edge cloud nodes corresponding to the user plane function node; instructing the central control node to migrate the service provided by the edge cloud node to be changed to the target edge cloud node; and then, establishing session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed. In this way, the target user plane function node can realize routing between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed based on session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed. For a specific implementation manner in which the session management function node instructs the central management and control node to migrate the service provided by the edge cloud node to be changed to the target edge cloud node, and a specific implementation manner in which the central management and control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, reference may be made to relevant contents of the above embodiments, which are not described herein again.
In embodiment B, the session management function node may select a target edge cloud node from the edge cloud nodes corresponding to the user plane function node, or may instruct the target user plane function node or the central management control node to select the target edge cloud node from the edge cloud nodes corresponding to the user plane function node. The session management function node indicates a target user plane function node or a central management control node, a target edge cloud node is selected from edge cloud nodes corresponding to the target user plane function node, and the session management function node can provide the service quality requirement of a user terminal corresponding to the edge cloud node to be changed for the target user plane function node. For a specific implementation manner that the session management function node selects a target edge cloud node from the edge cloud nodes corresponding to the user plane function node, and indicates the central control node to select the target edge cloud node from the edge cloud nodes corresponding to the target user plane function node, reference may be made to relevant contents of the above-mentioned embodiment, which is not described herein again.
Embodiment C: and establishing communication between the target user plane function node and the user plane function node to be changed. Because the communication connection between the user plane function node to be changed and the corresponding edge cloud node is existed, the communication between the target user plane function node and the user plane function node to be changed is established, and then the communication between the target user plane function node and the edge cloud node corresponding to the user plane function node to be changed can be established.
In the embodiment C, the session management function node does not need to notify the central management and control node to redeploy the service provided by the original edge cloud node, so that the probability of service interruption can be reduced, and the service quality of the edge cloud network can be provided. However, since the communication between the target user plane function node and the edge cloud node corresponding to the user plane function node to be changed needs to be relayed by the user plane function to be changed, the time delay of the service provided by the edge cloud network to the user terminal served by the edge cloud node corresponding to the user plane function node to be changed may be increased.
Accordingly, embodiments of the present application also provide a computer-readable storage medium storing computer instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps in the network reconnection method shown in fig. 2 and its optional implementation manner.
Fig. 3 is a flowchart illustrating another network reconnection method according to an embodiment of the present application. The method is suitable for the user plane function node in the mobile network. As shown in fig. 3, the method includes:
301. and acquiring edge cloud nodes to be changed in the edge cloud network.
302. Instructing the target scheduling node to select a target edge cloud node from other edge cloud nodes in the edge cloud network; the target scheduling node is a central control node or a user plane function node in the mobile network.
303. And under the condition that the central control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, providing the identifier of the target edge cloud node to a session management function node in the mobile network so that the session management function node establishes session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
In step 301 of this embodiment, the user plane function node may obtain an edge cloud node to be changed in the edge cloud network. Optionally, an optional implementation manner of step 301 is: and the user plane function node identifies the edge cloud node to be changed in the edge cloud network. Optionally, the user plane function node may monitor a quality of service parameter value of an edge cloud node group corresponding to the user plane function node; and under the condition that the service quality parameter value in the edge cloud node group is monitored not to meet the service quality requirement of the corresponding user terminal, taking the edge cloud node which does not meet the service quality requirement of the corresponding user terminal as the edge cloud node to be changed.
Or, recognizing the edge cloud node to be changed in the edge cloud network by the session management function node in the mobile network, and providing the identifier of the edge cloud node to be changed to the user plane function node. For a specific implementation of the user plane function node identifying the edge cloud node to be changed, reference may be made to relevant contents in the identification manner 2 in the foregoing system embodiment, and details are not described here again. Accordingly, another alternative implementation of step 301 is: and receiving an identifier of the edge cloud node to be changed, which is provided by the session management function node, and determining the edge cloud node corresponding to the identifier as the edge cloud node to be changed.
Further, in step 302, the target scheduling node may be a user plane function node or a central control node. In this embodiment, if the target scheduling node is a user plane function node, the user plane function node may instruct, after selecting the target edge cloud node, the central management and control node to migrate the service provided by the edge cloud node to be changed to the target edge cloud node. The target edge cloud node is other edge cloud nodes except the edge cloud node to be changed in the edge cloud network. Accordingly, the central management and control node can respond to the indication of the user plane function node and migrate the service provided by the edge cloud node to be changed to the target edge cloud node. For a specific implementation manner in which the central management and control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, reference may be made to relevant contents of the above system embodiment, and details are not described here again.
If the target scheduling node is a central management and control node, the user plane function node may instruct the central management node to select a target edge cloud node. Correspondingly, the central management and control node can respond to the indication of the session management function node and select a target edge cloud node from other edge cloud nodes of the edge cloud network except the edge cloud node to be changed; and migrating the service provided by the edge cloud node to be changed to the target edge cloud node. And then, providing the identification of the target edge cloud node to the user plane function node.
Then, in step 303, the identifier of the target edge cloud node may be provided to a session management function node in the mobile network, so that the session management function node establishes a session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed. In this way, the target edge cloud node can continue to provide services for the user terminal. For the user plane function node, the routing between the target edge cloud node and the user terminal can be realized based on the session connection between the target edge cloud node and the user terminal.
In this embodiment, the user plane function node in the mobile network is matched with the central management and control node, so that the change of the edge cloud node and the migration of the edge cloud service are realized, and a session connection between the user terminal and the changed edge cloud node is established. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
On the other hand, in the embodiment, the service quality of the edge cloud node is monitored from the network layer by the user plane function node of the mobile network, so that the timeliness of monitoring the service quality can be improved, the efficiency of finding that the service quality of the edge cloud node is reduced is improved, the timeliness of subsequently selecting a new edge cloud node can be further improved, and the service quality of the edge cloud network is favorably ensured.
In this embodiment, before the central control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, the target edge cloud node may be further selected from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network. The main implementation mode is as follows: the user plane function node can select a target edge cloud node meeting the service quality requirement from other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of other edge cloud nodes except the edge cloud node to be changed in the edge cloud network. The following describes a specific embodiment of selecting a target edge cloud node by a user plane function node:
alternative embodiment 2A: edge cloud nodes are reserved in the edge cloud network, and the reserved edge cloud nodes are partial edge cloud nodes of the edge cloud network. Accordingly, the user plane function node may select a target edge cloud node that meets the service quality requirement of the user terminal 30 corresponding to the edge cloud node to be changed from the edge cloud nodes reserved in the edge cloud network.
Alternative embodiment 2B: the user plane function node can acquire the corresponding relation between the user plane function node and the edge cloud node group. The user plane function node can maintain the corresponding relation between the user plane function node and the edge cloud node group. Or, the user plane function node may receive a correspondence between the user plane function node provided by the session management node and the edge cloud node group. Correspondingly, the user plane function node can determine an edge cloud node group to which the edge cloud node to be changed belongs according to the corresponding relation between the user plane function node and the edge cloud node group; and selecting a target edge cloud node which meets the service quality requirement of the user terminal corresponding to the edge cloud node to be changed from the edge cloud node group to which the edge cloud node to be changed belongs.
Alternative embodiment 2C: the user plane function node can instruct the center control node to select a target edge cloud node meeting the service quality requirement of the user terminal corresponding to the edge cloud node to be changed from other edge cloud nodes except the edge cloud node to be changed in the edge cloud network.
In optional embodiment 2C, the user plane function node may provide the service quality requirement of the edge cloud node to be changed to the central management and control node. Optionally, the user plane function node provides a node change request to the central control node, where the node change request includes a service quality requirement of a user terminal corresponding to an edge cloud node to be changed. Correspondingly, the central management and control node can respond to the node change request and acquire the service quality parameter values of other edge cloud nodes except the edge cloud node to be changed in the edge cloud network. Wherein the quality of service parameters of the other edge cloud nodes can be provided by a user plane function node or a session management function node. Further, the central control node may select a target edge cloud node satisfying the service quality requirement from the other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes; and providing the identification of the target edge cloud node to the user plane function node. For a specific implementation of the central management and control node selecting a target edge cloud node meeting the requirement of the quality of service from the other edge cloud nodes, reference may be made to relevant contents of the above system embodiment, and details are not described herein again.
Accordingly, embodiments of the present application also provide a computer-readable storage medium storing computer instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps in the network reconnection method shown in fig. 3 and its optional implementation manner.
Fig. 4 is a flowchart illustrating another network reconnection method according to an embodiment of the present application. The method is suitable for the central control node. As shown in fig. 4, the method includes:
401. under the instruction of a network element in the mobile network, migrating the service provided by the edge cloud node to be changed in the edge cloud network to a target edge cloud node; and the target edge cloud node is other edge cloud nodes except the edge cloud node to be changed in the edge cloud network.
402. And returning a service migration success notice to the network element in the mobile network so as to trigger the network element in the mobile network to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
In this embodiment, the network element in the mobile network mainly refers to a network element responsible for processing and routing of data. In some embodiments, this portion of network elements may be referred to as core network elements. For the description of the network elements of the core network, reference is made to the relevant contents of the above system embodiments. The core network elements may be: a session management function node or a user plane function node. For specific embodiments of the session management function node or the user plane management node identifying the edge cloud node to be changed and selecting the target edge cloud node, reference may be made to relevant contents of the above system embodiment, which is not described herein again.
A network element in the mobile network may instruct the central management and control node to migrate a service provided by the edge cloud node to be changed to the target edge cloud node. The target edge cloud node is the other edge cloud nodes except the edge cloud node to be changed in the plurality of edge cloud nodes. Accordingly, in step 401, the central management and control node may migrate the service provided by the edge cloud node to be changed to the target edge cloud node under the instruction of the network element in the mobile network. For a specific implementation of step 401, reference may be made to the related contents of the above system embodiments, and details are not described herein.
Further, in step 402, after the central management and control node completes the migration of the service provided by the edge cloud node to be changed to the target edge cloud node, a notification of successful service migration may be provided to a network element in the mobile network. The network element in the mobile network can respond to the service migration success notification and establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed. In this way, the target edge cloud node can continue to provide services for the user terminal.
In this embodiment, the network element in the mobile network is matched with the central management and control node, so that the change of the edge cloud node and the migration of the edge cloud service are realized, and a session connection between the user terminal and the changed edge cloud node is established. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
Accordingly, embodiments of the present application also provide a computer-readable storage medium storing computer instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps in the network reconnection method shown in fig. 4 and its optional implementation manner.
Fig. 5 is a flowchart illustrating another network reconnection method according to an embodiment of the present application. The method is suitable for the central control node. As shown in fig. 5, the method includes:
501. and under the instruction of the network element in the mobile network, selecting a target edge cloud node from other edge cloud nodes of the edge cloud network except the edge cloud node to be changed.
502. And migrating the service provided by the edge cloud node to be changed in the edge cloud network to the target edge cloud node.
503. And returning a service migration success notice to the network element in the mobile network so as to trigger the network element in the mobile network to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
In this embodiment, reference may be made to the related contents of the above system embodiments for the description of the network element in the mobile network. A network element in a mobile network may identify an edge cloud node in an edge cloud network to be altered. The network element in the mobile network may be a core network element. The core network elements may be: a session management function node or a user plane function node. For a specific implementation of identifying the edge cloud node to be changed by the session management function node or the user plane management node, reference may be made to relevant contents of the above system embodiment, and details are not described herein again.
After the network element in the mobile network can identify the edge cloud node to be changed in the edge cloud network, the central management and control node can be instructed to select a target edge cloud node from other edge cloud nodes of the edge cloud network except the edge cloud node to be changed. Optionally, the user plane function node may provide a node change request to the central control node, where the node change request includes a service quality requirement of the user terminal corresponding to the edge cloud node to be changed.
Correspondingly, for the central control node, a node change request provided by the core network element can be received; acquiring service quality parameter values of other edge cloud nodes from the node change request; and selecting a target edge cloud node meeting the service quality requirement from the other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes.
Optionally, the central management and control node may select a target edge cloud node that meets the requirement of the quality of service from edge cloud nodes reserved in the edge cloud network; wherein the reserved edge cloud nodes are part of the edge cloud nodes in the plurality of edge cloud nodes. Or the central control node may obtain the corresponding relationship between the user plane function node and the edge cloud node group from the node change request; determining an edge cloud node group to which the edge cloud node to be changed belongs according to the corresponding relation between the user plane function node and the edge cloud node group; and selecting the target edge cloud node meeting the service quality requirement from an edge cloud node group to which the edge cloud node to be changed belongs.
Further, the central management and control node can migrate the service provided by the edge cloud node to be changed to the target edge cloud node. After completing the migration of the service provided by the edge cloud node to be changed to the target edge cloud node, the central control node may provide a service migration success notification to a network element in the mobile network. The network element in the mobile network can respond to the service migration success notification and establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
In this way, the target edge cloud node can continue to provide services for the user terminal.
In this embodiment, the network element in the mobile network is matched with the central management and control node, so that the change of the edge cloud node and the migration of the edge cloud service are realized, and a session connection between the user terminal and the changed edge cloud node is established. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
In some embodiments, for the central control node, if other edge cloud nodes except the edge cloud node to be changed in the edge cloud network do not meet the quality of service requirement of the user terminal corresponding to the edge cloud node to be changed, that is, edge cloud nodes meeting the quality of service requirement of the user terminal corresponding to the edge cloud node to be changed do not exist in the other edge cloud nodes, the central control node may further monitor whether a new edge cloud node is added to the edge cloud network; and under the condition that a new edge cloud node is monitored to be added into the edge cloud network, selecting an edge cloud node which meets the service quality requirement of the user terminal corresponding to the edge cloud node to be changed from the new edge cloud node as a target edge cloud node.
Further, the central management and control node may migrate the service provided by the edge cloud node to be changed to the target edge cloud node. Optionally, the central management and control node may further notify the session management function node to reselect a new user plane function node. The specific implementation of selecting the user plane management node by the session management function node will be described below, and details are not described here.
Correspondingly, if the central control node does not detect that a new edge cloud node is added to the edge cloud network and/or the new edge cloud node does not meet the service quality requirement of the user terminal corresponding to the edge cloud node to be changed, the central control node may notify the session management function node to perform session reselection. And if the session reselection of the session management function node is successful, taking the edge cloud node selected by the session reselection as a target edge cloud node. Optionally, when the session reselection is performed by the session management function node, an edge cloud node whose current performance meets a set condition may be selected from the edge cloud network as a target edge cloud node. For example, the edge cloud node with the best performance at present may be selected from the edge cloud network as the target edge cloud node. And the best edge cloud node is used as a target edge cloud node. Correspondingly, if the session reselection of the session management function node fails, the edge cloud node to be changed continues to provide service for the user terminal.
Accordingly, embodiments of the present application also provide a computer-readable storage medium storing computer instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps in the network reconnection method shown in fig. 5 and its optional implementation manner.
It should be noted that the execution subjects of the steps of the methods provided in the above embodiments may be the same device, or different devices may be used as the execution subjects of the methods. For example, the execution subject of steps 401 and 402 may be device a; for another example, the execution subject of step 401 may be device a, and the execution subject of step 402 may be device B; and so on.
In addition, in some of the flows described in the above embodiments and the drawings, a plurality of operations are included in a specific order, but it should be clearly understood that the operations may be executed out of the order presented herein or in parallel, and the sequence numbers of the operations, such as 401, 402, etc., are merely used to distinguish various operations, and the sequence numbers themselves do not represent any execution order. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device may be implemented as a session management function node in a mobile network. As shown in fig. 6, an electronic device includes: a memory 60a and a processor 60 b; the memory 60a is used for storing computer programs.
The processor 60b is coupled to the memory 60a for executing computer programs for: acquiring an edge cloud node to be changed in an edge cloud network; instructing a target scheduling node to select a target edge cloud node from other edge cloud nodes in the edge cloud network; the target scheduling node is the session management function node, a central management and control node or a user plane function node in a mobile network; and under the condition that the central control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, establishing session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
In some embodiments, the target scheduling node is a session management function node. The processor 60b is further configured to: and selecting a target edge cloud node meeting the service quality requirement from other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of other edge cloud nodes.
Optionally, when the processor 60b selects a target edge cloud node satisfying the quality of service requirement from other edge cloud nodes, it is specifically configured to: selecting a target edge cloud node meeting the service quality requirement from the reserved edge cloud nodes; the reserved edge cloud nodes are part of edge cloud nodes in an edge cloud network; or determining an edge cloud node group to which the edge cloud node to be changed belongs according to the maintained corresponding relation between the user plane function node and the edge cloud node group; selecting a target edge cloud node meeting the service quality requirement from an edge cloud node group to which the edge cloud node to be changed belongs; or, instructing the central management and control node to select a target edge cloud node meeting the service quality requirement from other edge cloud nodes.
In other embodiments, the target scheduling node is a central management and control node, and when the processor 30b instructs the target scheduling node to select a target edge cloud node that meets the requirement of the quality of service from other edge cloud nodes, the processor is specifically configured to: providing a node change request to the central control node through the communication component 60c, wherein the node change request comprises the service quality requirement of the user terminal corresponding to the edge cloud node to be changed, so that the central control node selects a target edge cloud node meeting the service quality requirement from other edge cloud nodes and returns the identifier of the target edge cloud node; and taking the edge cloud node corresponding to the identification of the target edge cloud node as the target edge cloud node.
In other embodiments, when acquiring an edge cloud node to be changed in the plurality of edge cloud nodes, the processor 60b is specifically configured to: receiving, by the communication component 60b, an identification of an edge cloud node to be changed provided by a user plane function node in the mobile network; determining the edge cloud node to be changed according to the identifier of the edge cloud node to be changed; or, receiving, by the communication component 60b, a service quality parameter value of an edge cloud node group corresponding to a user plane function node provided by the user plane function node in the mobile network; judging whether edge cloud nodes with service quality parameter values which do not meet the service quality requirements of the corresponding user terminals exist in the edge cloud node groups or not according to the service quality parameter values of the edge cloud node groups corresponding to the user plane function nodes and the service quality requirements of the user terminals; and if so, taking the edge cloud node which does not meet the service quality requirement of the corresponding user terminal as the edge cloud node to be changed.
Optionally, when the processor 60b establishes a session connection between the target edge cloud node and the user terminal, it is specifically configured to: determining a user terminal corresponding to the edge cloud node to be changed according to the identifier of the edge cloud node to be changed; and establishing session connection between the target edge cloud node and the user terminal according to the identifier of the user terminal corresponding to the edge cloud node to be changed and the identifier of the target edge cloud node.
In still other embodiments, the number of user plane function nodes in the mobile network is plural. The processor 60b is further configured to: identifying a user plane function node to be changed in the plurality of user plane function nodes; selecting a target user plane function node from other user plane function nodes; and providing the identifier of the edge cloud node to be changed to the target user plane function node through the communication component 60c, so that the target user plane function node establishes communication with the edge cloud node to be changed.
Optionally, the number of the user plane function nodes in the mobile network is multiple; when the processor 60b selects a target edge cloud node satisfying the quality of service requirement from other edge cloud nodes, it is specifically configured to: identifying a user plane function node to be changed in the plurality of user plane function nodes; selecting a target user plane function node from other user plane function nodes; and taking the edge cloud node corresponding to the target user plane function node as other edge cloud nodes.
Optionally, the processor 40b is further configured to: and selecting a target edge cloud node meeting the service quality requirement from the edge cloud nodes corresponding to the target user plane function nodes.
Further, when the processor 60b selects a target edge cloud node meeting the service quality requirement from the edge cloud nodes corresponding to the target user plane function nodes, it is specifically configured to: indicating a target user plane function node, and selecting a target edge cloud node meeting the service quality requirement from edge cloud nodes corresponding to the target user plane function node; or, instructing the central control node to select a target edge cloud node meeting the service quality requirement from edge cloud nodes corresponding to the target user plane function node.
In still other embodiments, the number of user plane function nodes in the mobile network is plural; the processor 60b is further configured to: identifying a user plane function node to be changed in the plurality of user plane function nodes; selecting a target user plane function node from other user plane function nodes; and establishing communication between the target user plane function node and the user plane function node to be changed.
Optionally, when identifying the user plane function node to be changed in the plurality of user plane function nodes, the processor 60b is specifically configured to: monitoring the performance of a plurality of user plane function nodes; and under the condition that the performance of the plurality of user plane functional nodes does not meet the performance requirement of the butted base station is monitored, determining the user plane functional node which does not meet the performance requirement of the butted base station as the user plane functional node to be changed.
In some optional embodiments, as shown in fig. 6, the electronic device may further include: power supply component 60d, etc. Only some of the components are schematically shown in fig. 6, and it is not meant that the electronic device must include all of the components shown in fig. 6, nor that the electronic device can include only the components shown in fig. 6.
The electronic device provided by this embodiment can be implemented as a session management function node in a mobile network, and is mutually matched with a central management and control node, so as to implement change of edge cloud nodes and migration of edge cloud services, and establish session connection between a user terminal and the changed edge cloud nodes. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
Fig. 7 is a schematic structural diagram of another electronic device according to an embodiment of the present application. The electronic device may be implemented as a user plane function node in a mobile network. As shown in fig. 7, an electronic device includes: a memory 70a, a processor 70b, and a communication component 70 c; the memory 70a is used for storing computer programs.
The processor 70b is coupled to the memory 70a for executing a computer program for: acquiring an edge cloud node to be changed in an edge cloud network; instructing a target scheduling node to select a target edge cloud node from other edge cloud nodes in the edge cloud network; the target scheduling node is a central control node or a user plane function node in a mobile network; under the condition that the central control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, the identifier of the target edge cloud node is provided to the session management function node in the mobile network through the communication component 70c, so that the session management function node establishes session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
Further, the processor 70b is further configured to: and based on the session connection between the target edge cloud node and the user terminal, the routing between the target edge cloud node and the user terminal is realized.
In some embodiments, the target scheduling node is a user plane function node. The processor 70b is further configured to: and selecting a target edge cloud node meeting the service quality requirement from other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of other edge cloud nodes.
Further, when the processor 70b selects a target edge cloud node satisfying the service quality requirement from other edge cloud nodes, it is specifically configured to: selecting a target edge cloud node meeting the service quality requirement from the reserved edge cloud nodes; the reserved edge cloud nodes are part of edge cloud nodes in an edge cloud network; or determining an edge cloud node group to which the edge cloud node to be changed belongs according to the maintained corresponding relation between the user plane function node and the edge cloud node group; selecting a target edge cloud node meeting the service quality requirement from an edge cloud node group to which the edge cloud node to be changed belongs; or, instructing the central management and control node to select a target edge cloud node meeting the service quality requirement from other edge cloud nodes.
In other embodiments, the target scheduling node is a central governing node. When instructing the target scheduling node to select a target edge cloud node satisfying the quality of service requirement from other edge cloud nodes, the processor 70b is specifically configured to: providing a node change request to the central control node through the communication component 70c, wherein the node change request includes the service quality requirement of the user terminal corresponding to the edge cloud node to be changed, so that the central control node selects a target edge cloud node meeting the service quality requirement from other edge cloud nodes, and returns the identifier of the target edge cloud node; and taking the edge cloud node corresponding to the identification of the target edge cloud node as the target edge cloud node.
Optionally, when acquiring an edge cloud node to be changed in the plurality of edge cloud nodes, the processor 70b is specifically configured to: receiving, by the communication component 70c, an identification of an edge cloud node to be changed provided by a session management function node in the mobile network; determining the edge cloud node to be changed according to the identifier of the edge cloud node to be changed; or monitoring a service quality parameter value of an edge cloud node group corresponding to the user plane function node; and under the condition that the service quality parameter value in the edge cloud node group is monitored not to meet the service quality requirement of the corresponding user terminal, taking the edge cloud node which does not meet the service quality requirement of the corresponding user terminal as the edge cloud node to be changed.
In some optional embodiments, as shown in fig. 7, the electronic device may further include: power supply component 70d, and the like. Only some of the components are schematically shown in fig. 7, and it is not meant that the electronic device must include all of the components shown in fig. 7, nor that the electronic device can include only the components shown in fig. 7.
The electronic device provided by this embodiment can be implemented as a user plane function node in a mobile network, and is mutually matched with a central control node, so as to implement change of edge cloud nodes and migration of edge cloud services, and establish session connection between a user terminal and the changed edge cloud nodes. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
Fig. 8 is a schematic structural diagram of another electronic device according to an embodiment of the present application. The electronic device may be implemented as a central management and control node. As shown in fig. 8, an electronic device includes: a memory 80a, a processor 80b, and a communication component 80 c; the memory 80a is used for storing computer programs.
In some embodiments, the processor 80b is coupled to the memory 80a for executing a computer program for: under the instruction of a network element in the mobile network, migrating the service provided by the edge cloud node to be changed in the edge cloud network to a target edge cloud node; the target edge cloud node is other edge cloud nodes except the edge cloud node to be changed in the edge cloud network; and returning a service migration success notification to the network element in the mobile network through the communication component 80c to trigger the network element in the mobile network to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
In other embodiments, the processor 80b is coupled to the memory 80a for executing computer programs for: under the instruction of a network element in the mobile network, selecting a target edge cloud node from other edge cloud nodes of the edge cloud network except the edge cloud node to be changed; migrating services provided by edge cloud nodes to be changed in the edge cloud network to target edge cloud nodes; and a service migration success notification is returned to the network element in the mobile network through the communication component 80c, so as to trigger the network element in the mobile network to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
When the processor 80b selects a target edge cloud node from other edge cloud nodes of the edge cloud network except the edge cloud node to be changed under the instruction of the network element in the mobile network, the processor is specifically configured to: receiving, by the communication component 80c, a node change request provided by a network element of the core network; the node change request comprises the service quality requirement of the user terminal corresponding to the edge cloud node to be changed; acquiring service quality parameter values of other edge cloud nodes from the node change request; and selecting a target edge cloud node meeting the service quality requirement from other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of other edge cloud nodes.
Optionally, when the processor 80b selects a target edge cloud node satisfying the quality of service requirement from other edge cloud nodes, it is specifically configured to: selecting a target edge cloud node meeting the service quality requirement from edge cloud nodes reserved in an edge cloud network; the reserved edge cloud nodes are part of edge cloud nodes in the plurality of edge cloud nodes; or acquiring the corresponding relation between the user plane function node and the edge cloud node group from the node change request; determining an edge cloud node group to which an edge cloud node to be changed belongs according to a corresponding relation between a user plane function node and the edge cloud node group; and selecting a target edge cloud node meeting the service quality requirement from an edge cloud node group to which the edge cloud node to be changed belongs.
In still other embodiments, the processor 80b is further configured to: monitoring whether a new edge cloud node is added into the edge cloud network system or not under the condition that other edge cloud nodes do not have edge cloud nodes meeting the service quality requirement; and under the condition that it is monitored that a new edge cloud node is added into the edge cloud network system, selecting an edge cloud node meeting the service quality requirement from the new edge cloud node as a target edge cloud node.
In some optional embodiments, as shown in fig. 8, the electronic device may further include: power supply component 80d, and the like. Only some of the components are shown schematically in fig. 8, and it is not meant that the electronic device must include all of the components shown in fig. 8, nor that the electronic device can include only the components shown in fig. 8.
The electronic device provided by this embodiment may be implemented as a central management and control node, and is mutually matched with a network element in a mobile network, so as to implement change of an edge cloud node and migration of an edge cloud service, and establish session connection between a user terminal and the changed edge cloud node. Therefore, the changed edge cloud node can continue to provide service for the user terminal, the probability of service interruption can be reduced or the service quality can be prevented from being reduced, and the service quality of the network system can be improved.
In embodiments of the present application, the memory is used to store computer programs and may be configured to store other various data to support operations on the device on which it is located. Wherein the processor may execute a computer program stored in the memory to implement the corresponding control logic. The memory may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
In the embodiments of the present application, the processor may be any hardware processing device that can execute the above described method logic. Alternatively, the processor may be a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), or a Micro Controller Unit (MCU); programmable devices such as Field-Programmable Gate arrays (FPGAs), Programmable Array Logic devices (PALs), General Array Logic devices (GAL), Complex Programmable Logic Devices (CPLDs), etc. may also be used; or Advanced Reduced Instruction Set (RISC) processors (ARM), or System On Chip (SOC), etc., but is not limited thereto.
In embodiments of the present application, the communication component is configured to facilitate wired or wireless communication between the device in which it is located and other devices. The device in which the communication component is located can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G, 5G or a combination thereof. In an exemplary embodiment, the communication component receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component may also be implemented based on Near Field Communication (NFC) technology, Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, or other technologies.
In embodiments of the present application, a power supply component is configured to provide power to various components of the device in which it is located. The power components may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device in which the power component is located.
It should be noted that, the descriptions of "first", "second", etc. in this document are used for distinguishing different messages, devices, modules, etc., and do not represent a sequential order, nor limit the types of "first" and "second" to be different.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (39)

1. A network system, comprising: the system comprises a network element, a central control node and a plurality of edge cloud nodes in an edge cloud network in a mobile network;
a network element in the mobile network, configured to: identifying an edge cloud node of the plurality of edge cloud nodes to be altered;
the network element in the mobile network or the central management and control node is configured to: selecting a target edge cloud node from other edge cloud nodes except the edge cloud node to be changed;
the central control node is used for migrating the service provided by the edge cloud node to be changed to a target edge cloud node;
and the network element in the mobile network is further configured to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
2. The system of claim 1, further comprising: a management device;
the management equipment is used for displaying a configuration interface of the scheduling node; responding to the configuration operation of the configuration interface of the scheduling node, and acquiring the configured scheduling node as a node for executing the operation of the selected target edge cloud node; the configured scheduling node is a network element in the mobile network or the central control node;
and the network element in the mobile network is configured to instruct, when the configured scheduling node is a center management and control node, the center management and control node to select a target edge cloud node from other edge cloud nodes except the edge cloud node to be changed.
3. The system according to claim 1, wherein the network element in the mobile network or the central management and control node, when selecting the target edge cloud node, is specifically configured to: and selecting a target edge cloud node meeting the service quality requirement from the other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes.
4. The system according to claim 3, wherein when selecting the target edge cloud node that meets the quality of service requirement, the network element in the mobile network or the central management and control node is specifically configured to:
selecting a target edge cloud node meeting the service quality requirement from edge cloud nodes reserved in the edge cloud network; wherein the reserved edge cloud nodes are part of the edge cloud nodes in the plurality of edge cloud nodes;
alternatively, the first and second electrodes may be,
determining an edge cloud node group to which the edge cloud node to be changed belongs according to the corresponding relationship between the maintained user plane function node and the edge cloud node group; and selecting the target edge cloud node meeting the service quality requirement from an edge cloud node group to which the edge cloud node to be changed belongs.
5. The system of claim 3, wherein the network element in the mobile network is further configured to: under the condition that the target edge cloud node is selected by the central control node, providing the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameters of other edge cloud nodes to the central control node;
the central management and control node is further configured to: providing the identification of the target edge cloud node to a network element in the mobile network;
and the network element in the mobile network is further configured to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed according to the identifier of the target edge cloud node.
6. The system of claim 3, wherein the network element in the mobile network is further configured to: and under the condition that the network element in the mobile network selects the target edge cloud node, instructing the central control node to migrate the service provided by the edge cloud node to be changed to the target edge cloud node.
7. The system according to claim 1, wherein the network element in the mobile network is a session management function node or a user plane function node in a network element of a core network.
8. The system according to claim 7, wherein the number of the user plane function nodes is plural;
the session management function node is further configured to: identifying a user plane function node to be changed in the plurality of user plane function nodes; selecting a target user plane function node from other user plane function nodes; and providing the identifier of the edge cloud node to be changed for the target user plane function node so as to establish a route between the target user plane function node and the edge cloud node to be changed.
9. The system according to claim 7, wherein the number of the user plane function nodes is plural;
the session management function node is further configured to: identifying a user plane function node to be changed in the plurality of user plane function nodes; selecting a target user plane function node from other user plane function nodes; taking the edge cloud node corresponding to the target user plane function node as the other edge cloud nodes;
the session management function node is further configured to: and the target edge cloud node is connected with the session between the user terminals corresponding to the edge cloud nodes to be changed.
10. The system of claim 9, wherein the session management function node is further configured to: selecting the target edge cloud node from the edge cloud nodes corresponding to the target user plane function node;
or, indicating the target user plane function node, and selecting the target edge cloud node from the edge cloud nodes corresponding to the target user plane function node;
or, instructing the central control node to select the target edge cloud node from the edge cloud nodes corresponding to the target user plane function node.
11. The system of claim 9, wherein the target user plane function node is configured to: and based on the session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed, realizing the routing between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
12. The system according to claim 7, wherein the number of the user plane function nodes is plural;
the session management function node is further configured to: identifying a user plane function node to be changed in the plurality of user plane function nodes; selecting a target user plane function node from the other user plane function nodes; and establishing communication between the target user plane function node and the user plane function node to be changed.
13. The system according to any of claims 8-12, wherein the network element in the mobile network further comprises: the base station is respectively butted with the plurality of user plane function nodes;
the session management function node, when identifying a user plane function node to be changed among the plurality of user plane function nodes, is specifically configured to:
monitoring the performance of the plurality of user plane function nodes; and under the condition that the performance of the plurality of user plane function nodes is monitored to not meet the performance requirement of the butted base station, determining the user plane function node which does not meet the performance requirement of the butted base station as the user plane function node to be changed.
14. A network reconnection method, applied to a session management function node in a mobile network, the method comprising:
acquiring an edge cloud node to be changed in an edge cloud network;
instructing a target scheduling node to select a target edge cloud node from other edge cloud nodes in the edge cloud network; the target scheduling node is the session management function node, a central management and control node or a user plane function node in a mobile network;
and under the condition that a central control node migrates the service provided by the edge cloud node to be changed to the target edge cloud node, establishing session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
15. The method of claim 14, wherein the target scheduling node is the session management function node, further comprising:
and selecting a target edge cloud node meeting the service quality requirement from the other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes.
16. The method according to claim 15, wherein the selecting, according to the quality of service requirement of the user terminal corresponding to the edge cloud node to be changed and the quality of service parameter values of the other edge cloud nodes, a target edge cloud node that meets the quality of service requirement from the other edge cloud nodes comprises:
selecting a target edge cloud node meeting the service quality requirement from the reserved edge cloud nodes; the reserved edge cloud nodes are part of edge cloud nodes in the edge cloud network;
alternatively, the first and second electrodes may be,
determining an edge cloud node group to which the edge cloud node to be changed belongs according to the corresponding relationship between the maintained user plane function node and the edge cloud node group; and selecting a target edge cloud node meeting the service quality requirement from an edge cloud node group to which the edge cloud node to be changed belongs.
17. The method of claim 14, wherein the target scheduling node is a central management node; the instructing the target scheduling node to select a target edge cloud node satisfying the quality of service requirement from the other edge cloud nodes includes:
providing a node change request to the central control node, wherein the node change request includes the service quality requirement of the user terminal corresponding to the edge cloud node to be changed, so that the central control node selects a target edge cloud node meeting the service quality requirement from the other edge cloud nodes, and returns the identifier of the target edge cloud node;
and taking the edge cloud node corresponding to the identification of the target edge cloud node as the target edge cloud node.
18. The method of claim 14, wherein obtaining the edge cloud node to be changed from the plurality of edge cloud nodes comprises:
receiving an identifier of an edge cloud node to be changed, which is provided by a user plane function node in the mobile network; determining the edge cloud node to be changed according to the identifier of the edge cloud node to be changed;
alternatively, the first and second electrodes may be,
receiving a service quality parameter value of an edge cloud node group corresponding to a user plane function node provided by the user plane function node in the mobile network; judging whether an edge cloud node with a service quality parameter value which does not meet the service quality requirement of the corresponding user terminal exists in the edge cloud node group or not according to the service quality parameter value of the edge cloud node group corresponding to the user plane function node and the service quality requirement of the user terminal; and if so, taking the edge cloud node which does not meet the service quality requirement of the corresponding user terminal as the edge cloud node to be changed.
19. The method of claim 14, wherein establishing the session connection between the target edge cloud node and the user terminal comprises:
determining a user terminal corresponding to the edge cloud node to be changed according to the identifier of the edge cloud node to be changed;
and establishing session connection between the target edge cloud node and the user terminal according to the identifier of the user terminal corresponding to the edge cloud node to be changed and the identifier of the target edge cloud node.
20. The method of claim 14, wherein the number of user plane function nodes in the mobile network is plural; the method further comprises the following steps:
identifying a user plane function node to be changed in the plurality of user plane function nodes;
selecting a target user plane function node from other user plane function nodes;
and providing the identifier of the edge cloud node to be changed for the target user plane function node so that the target user plane function node establishes communication with the edge cloud node to be changed.
21. The method of claim 14, wherein the number of user plane function nodes in the mobile network is plural; the method further comprises the following steps:
identifying a user plane function node to be changed in the plurality of user plane function nodes;
selecting a target user plane function node from other user plane function nodes;
and taking the edge cloud node corresponding to the target user plane function node as the other edge cloud nodes.
22. The method of claim 14, wherein the number of user plane function nodes in the mobile network is plural; the method further comprises the following steps:
identifying a user plane function node to be changed in the plurality of user plane function nodes;
selecting a target user plane function node from the other user plane function nodes;
and establishing communication between the target user plane function node and the user plane function node to be changed.
23. The method according to any of claims 20-22, wherein said identifying a user plane function node of said plurality of user plane function nodes to be changed comprises:
monitoring the performance of the plurality of user plane function nodes;
and under the condition that the performance of the plurality of user plane function nodes is monitored to not meet the performance requirement of the butted base station, determining the user plane function node which does not meet the performance requirement of the butted base station as the user plane function node to be changed.
24. A network reconnection method, adapted to a user plane function node in a mobile network, the method comprising:
acquiring an edge cloud node to be changed in an edge cloud network;
instructing a target scheduling node to select a target edge cloud node from other edge cloud nodes in the edge cloud network; the target scheduling node is a central control node or a user plane function node in a mobile network;
under the condition that the central management and control node migrates the service provided by the edge cloud node to be changed to a target edge cloud node; and providing the identification of the target edge cloud node for a session management function node in the mobile network so that the session management function node establishes session connection between the target edge cloud node and a user terminal corresponding to the edge cloud node to be changed.
25. The method of claim 24, further comprising:
and based on the session connection between the target edge cloud node and the user terminal, realizing the routing between the target edge cloud node and the user terminal.
26. The method of claim 24, wherein the target scheduling node is the user plane function node, and wherein the method further comprises:
and selecting a target edge cloud node meeting the service quality requirement from the other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes.
27. The method of claim 26, wherein selecting the target edge cloud node from the other edge cloud nodes that meets the quality of service requirement comprises:
selecting a target edge cloud node meeting the service quality requirement from the reserved edge cloud nodes; the reserved edge cloud nodes are part of edge cloud nodes in the edge cloud network;
alternatively, the first and second electrodes may be,
determining an edge cloud node group to which the edge cloud node to be changed belongs according to the corresponding relationship between the maintained user plane function node and the edge cloud node group; and selecting the target edge cloud node meeting the service quality requirement from an edge cloud node group to which the edge cloud node to be changed belongs.
28. The method of claim 27, wherein the target scheduling node is the central management node; the instructing the target scheduling node to select a target edge cloud node satisfying the quality of service requirement from the other edge cloud nodes includes:
providing a node change request to the central control node, wherein the node change request includes the service quality requirement of the user terminal corresponding to the edge cloud node to be changed, so that the central control node selects a target edge cloud node meeting the service quality requirement from the other edge cloud nodes, and returns the identifier of the target edge cloud node;
and taking the edge cloud node corresponding to the identification of the target edge cloud node as the target edge cloud node.
29. The method of claim 24, wherein obtaining the edge cloud node to be changed from the plurality of edge cloud nodes comprises:
receiving an identifier of an edge cloud node to be changed, which is provided by a session management function node in the mobile network; determining the edge cloud node to be changed according to the identifier of the edge cloud node to be changed;
alternatively, the first and second electrodes may be,
monitoring a service quality parameter value of an edge cloud node group corresponding to the user plane function node; and under the condition that the service quality parameter value in the edge cloud node group is monitored not to meet the service quality requirement of the corresponding user terminal, taking the edge cloud node which does not meet the service quality requirement of the corresponding user terminal as the edge cloud node to be changed.
30. A network reconnection method is suitable for a central management and control node, and is characterized by comprising the following steps:
under the instruction of a network element in a mobile network, migrating a service provided by an edge cloud node to be changed in the edge cloud network to a target edge cloud node; the target edge cloud node is other edge cloud nodes except the edge cloud node to be changed in the edge cloud network;
and returning a service migration success notice to the network element in the mobile network so as to trigger the network element in the mobile network to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
31. A network reconnection method is suitable for a central management and control node, and is characterized by comprising the following steps:
under the instruction of a network element in a mobile network, selecting a target edge cloud node from other edge cloud nodes of the edge cloud network except the edge cloud node to be changed;
migrating services provided by edge cloud nodes to be changed in the edge cloud network to target edge cloud nodes;
and returning a service migration success notice to the network element in the mobile network so as to trigger the network element in the mobile network to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
32. The method of claim 31, wherein selecting a target edge cloud node from the edge cloud nodes of the edge cloud network other than the edge cloud node to be changed under the direction of a network element in a mobile network comprises:
receiving a node change request provided by a network element in the mobile network; the node change request comprises the service quality requirement of the user terminal corresponding to the edge cloud node to be changed;
obtaining the service quality parameter values of the other edge cloud nodes from the node change request;
and selecting a target edge cloud node meeting the service quality requirement from the other edge cloud nodes according to the service quality requirement of the user terminal corresponding to the edge cloud node to be changed and the service quality parameter values of the other edge cloud nodes.
33. The method of claim 32, wherein selecting the target edge cloud node from the other edge cloud nodes that meets the quality of service requirement comprises:
selecting a target edge cloud node meeting the service quality requirement from edge cloud nodes reserved in the edge cloud network; wherein the reserved edge cloud nodes are part of the edge cloud nodes in the plurality of edge cloud nodes;
alternatively, the first and second electrodes may be,
acquiring the corresponding relation between the user plane function node and the edge cloud node group from the node change request; determining an edge cloud node group to which the edge cloud node to be changed belongs according to the corresponding relation between the user plane function node and the edge cloud node group; and selecting the target edge cloud node meeting the service quality requirement from an edge cloud node group to which the edge cloud node to be changed belongs.
34. The method of claim 32, further comprising:
monitoring whether a new edge cloud node is added into the edge cloud network system or not under the condition that the other edge cloud nodes do not have an edge cloud node meeting the service quality requirement;
and under the condition that a new edge cloud node is monitored to be added into the edge cloud network system, selecting an edge cloud node meeting the service quality requirement from the new edge cloud node as the target edge cloud node.
35. An electronic device, implementable as a session management function node in a mobile network, comprising: a memory and a processor; wherein the memory is used for storing a computer program;
the processor is coupled to the memory for executing the computer program for performing the steps of the method of any of claims 14-23.
36. An electronic device, implementable as a user plane function node in a mobile network, comprising: a memory, a processor, and a communications component; wherein the memory is used for storing a computer program;
the processor is coupled to the memory for executing the computer program for performing the steps of the method of any of claims 24-29.
37. An electronic device, implementable as a central management and control node, comprising: a memory, a processor, and a communications component; wherein the memory is used for storing a computer program;
the processor is coupled to the memory for executing the computer program for performing the steps of the method of any of claims 30-34.
38. A computer-readable storage medium having stored thereon computer instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps of the method of any one of claims 14-34.
39. A network system, comprising: the system comprises a communication network, a central management and control node and a plurality of edge cloud nodes in an edge cloud network;
the communication network is configured to: identifying an edge cloud node of the plurality of edge cloud nodes to be altered;
the communication network or the central management and control node is configured to: selecting a target edge cloud node from other edge cloud nodes except the edge cloud node to be changed;
the central control node is used for migrating the service provided by the edge cloud node to be changed to a target edge cloud node;
the communication network is further configured to establish session connection between the target edge cloud node and the user terminal corresponding to the edge cloud node to be changed.
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