CN113382032A

CN113382032A - Cloud node changing, network expanding and service providing method, device and medium

Info

Publication number: CN113382032A
Application number: CN202010163124.7A
Authority: CN
Inventors: 朱松; 白常明; 张大江
Original assignee: Alibaba Group Holding Ltd
Current assignee: Alibaba Cloud Computing Ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2021-09-10
Anticipated expiration: 2040-03-10
Also published as: CN113382032B

Abstract

The embodiment of the application provides a method, equipment and medium for cloud node change, network expansion and service provision. In some embodiments of the application, after determining that an edge cloud node to be changed for providing service for a service demander exists in an edge cloud network, a central management and control device of the edge cloud network selects an edge cloud node which can meet the service quality requirement of the service demander from other nodes of the edge cloud network, and after selecting a target edge cloud node, controls the edge cloud node to be changed to perform service migration to the target edge cloud node so that the target edge cloud node continues to provide service for the service demander, prevents service interruption, ensures service continuity, and improves stability of edge cloud service.

Description

Cloud node changing, network expanding and service providing method, device and medium

Technical Field

The present application relates to the field of data processing technologies, and in particular, to a method, device, and medium for cloud node change, network expansion, and service provision.

Background

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 part of service requirements of short time delay.

However, in an actual edge cloud computing scenario, due to various reasons, such as a failure of an edge node, an excessively high resource occupancy rate, a change in network conditions, and the like, a part of edge cloud nodes cannot continue to provide services.

Disclosure of Invention

In various aspects, the present disclosure provides a method, a device, and a medium for cloud node change, network expansion, and service provision, which are used to migrate a service of an edge cloud node to a new edge cloud node for continuation when a quality of service parameter of the edge cloud node of a certain edge service does not meet a requirement, thereby improving stability of the edge cloud service.

The embodiment of the application provides a cloud node changing method, which is suitable for a central control device in an edge cloud network, and comprises the following steps:

determining edge cloud nodes to be changed in the edge cloud network, wherein the edge cloud nodes to be changed provide services for service demanders;

selecting a target edge cloud node from other edge cloud nodes in the edge cloud network according to the position of the edge cloud node to be changed and/or the service quality requirement of a service demand side;

and controlling the edge cloud node to be changed to perform service migration on the target edge cloud node so that the target edge cloud node provides service for the service demand party.

The embodiment of the present application further provides a network expansion method, which is applicable to a network management node, and includes:

receiving a node request sent by a central control device in an edge cloud network, wherein the node request carries a service quality requirement of a service demand party;

selecting edge cloud nodes meeting the service quality requirement from edge cloud nodes except the edge cloud nodes controlled by the central control equipment in the edge cloud network as candidate edge cloud nodes;

and sending the information of the candidate edge cloud nodes to a central control device so that the central control device can select a target edge cloud node from the candidate edge cloud nodes, wherein the service on the edge cloud node to be changed in the edge cloud network can be migrated to the target edge cloud node.

An embodiment of the present application further provides an edge cloud network, including: the system comprises a network management node, a central management and control device and a plurality of edge cloud nodes;

the network management node establishes a communication relationship with a central control device and an edge cloud node controlled by the central control device, and is used for managing the central control device and the edge cloud node controlled by the central control device;

the central control equipment determines edge cloud nodes to be changed in the edge cloud network; selecting a target edge cloud node from other edge cloud nodes in the edge cloud network according to the position of the edge cloud node to be changed and/or the service quality requirement of a service demand side; controlling the edge cloud node to be changed to perform service migration on the target edge cloud node so that the target edge cloud node provides service for a service demand party;

and the edge cloud node controlled by the central control equipment is used for providing services for the service demand party.

An embodiment of the present application further provides a central management and control device, including: a memory and a processor;

the memory to store one or more computer instructions;

the processor to execute the one or more computer instructions to:

Embodiments of the present application also provide a computer-readable storage medium storing a computer program that, when executed by one or more processors, causes the one or more processors to perform actions comprising:

An embodiment of the present application further provides a network management device, including: a memory and a processor;

the memory to store one or more computer instructions;

the processor to execute the one or more computer instructions to:

An embodiment of the present application further provides a service providing method, including:

determining edge cloud equipment to be changed in the edge cloud network, wherein the edge cloud equipment to be changed provides service for a service demand party;

selecting target edge cloud equipment from other edge cloud equipment in the edge cloud network according to the position of the edge cloud equipment to be changed and/or the service quality requirement of a service demand side;

and controlling the edge cloud equipment to be changed to perform service migration on the target edge cloud equipment so that the target edge cloud equipment provides service for the service demand party.

the memory to store one or more computer instructions;

the processor to execute the one or more computer instructions to:

In some embodiments of the application, after determining that an edge cloud node to be changed for providing service for a service demander exists in an edge cloud network, a central management and control device of the edge cloud network selects an edge cloud node which can meet the service quality requirement of the service demander from other nodes of the edge cloud network, and after selecting a target edge cloud node, controls the edge cloud node to be changed to perform service migration to the target edge cloud node so that the target edge cloud node continues to provide service for the service demander, prevents service interruption, ensures service continuity, and improves stability of edge cloud service.

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. 1 is a schematic structural diagram of an edge cloud network according to an exemplary embodiment of the present disclosure;

fig. 2a is a schematic flowchart of a cloud node changing method according to an exemplary embodiment of the present disclosure;

fig. 2b is a schematic flowchart of a service providing method according to an exemplary embodiment of the present application;

fig. 3 is a flowchart illustrating another node changing method according to an exemplary embodiment of the present application;

fig. 4 is a flowchart illustrating another node changing method according to an exemplary embodiment of the present application;

fig. 5 is a flowchart illustrating another node changing method according to an exemplary embodiment of the present application;

fig. 6 is a flowchart illustrating a network expansion method according to an exemplary embodiment of the present application;

fig. 7 is a schematic structural diagram of a central management and control device according to an exemplary embodiment of the present application;

fig. 8 is a schematic structural diagram of a network management device according to an exemplary embodiment of the present application;

fig. 9 is a schematic structural diagram of a central management and control device according to an exemplary 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 part of service requirements of short time delay. However, in an actual edge cloud computing scenario, objects served by part of edge cloud nodes have certain mobility, or network conditions of the edge cloud nodes change, which may involve the need to select a new edge cloud node for a service demander, and how to select a suitable edge cloud node without affecting the service of the service demander needs to be solved.

In some embodiments of the application, after determining that an edge cloud node to be changed for providing service for a service demander exists in an edge cloud network, a central management and control device of the edge cloud network selects an edge cloud node that can meet a service quality requirement of the service demander from other nodes of the edge cloud network, and after selecting a target edge cloud node, controls the edge cloud node to be changed to perform service migration to the target edge cloud node, so that the target edge cloud node continues to provide service for the service demander, thereby preventing service interruption, ensuring service continuity, and improving stability of edge cloud service.

Further, if no edge cloud node capable of providing the service to the service demander exists in other edge cloud nodes in the edge cloud network, the reselection operation of the edge cloud node is stopped. The edge cloud nodes which can provide services for the service demanders do not exist in the edge cloud network, and a user can be reminded to maintain the edge cloud nodes to be changed, so that the edge cloud nodes to be changed can meet the service quality requirements of the service demanders again.

Further, after the central control equipment controls the edge cloud nodes to be changed to perform service migration to the target edge cloud nodes, the service demander executes access operation of the target edge cloud nodes; after the service demander accesses the target edge cloud node, sending an access success message to the central control equipment; after receiving the access success message sent by the service demand party, the central control device sends a resource release notification to the edge cloud node to be changed so as to notify the edge cloud node to be changed to release resources. Obviously, after receiving the resource release notification, the edge cloud node to be changed may first determine whether to continue to bear the service of the service demander, and if so, not perform the resource release operation; and if not, executing the resource releasing operation.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an edge cloud network according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the edge cloud network 100 includes: the system comprises a central management and control device 101, a plurality of edge cloud nodes 102 and a network management node 103; the network management node 103 establishes network connection with the plurality of edge cloud nodes 102, and can acquire various parameters of the plurality of edge cloud nodes 102. The central control equipment 101 establishes network connection with a part of edge cloud nodes 102 in the plurality of edge cloud nodes 102, and takes the part of edge cloud nodes 10 as a control object to perform unified control on the part of edge cloud nodes 102 in the edge cloud network 100 in aspects of resource scheduling, mirror image management, instance control, operation and maintenance, network, security and the like, so as to put cloud computing services into each edge cloud node 102 for processing.

The edge cloud network 100 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. An edge cloud network is a network built based on infrastructure between a central cloud or traditional cloud computing system and terminals. Where edge cloud network 100 includes at least one edge cloud node 102, each edge cloud node 102 includes 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 102 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 102 in the edge cloud network 100 for processing, and as each edge cloud node 102 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.

How to reasonably schedule the resources of the plurality of edge cloud nodes and how to manage and control the plurality of edge cloud nodes to perform cloud computing services with correct and stable logic is an important challenge. In the edge cloud network of this embodiment, a central control device 101 is deployed, and the central control device 101 uses an edge cloud node 102 as a control object to perform unified control on at least one edge cloud node 102 in the edge cloud network 100 in terms of resource scheduling, mirror image management, instance control, operation and maintenance, network, security, and the like, so as to place cloud computing services in each edge cloud node 102 for processing. In terms of deployment implementation, the central management and control device 101 may be deployed in one or more cloud computing data centers, or may be deployed in one or more conventional data centers, and the central management and control device 101 and at least one edge cloud node 102 managed by the central management and control device may also form part of a network structure of an edge cloud network, which is not limited in this embodiment.

For an edge cloud node 102, various resources, such as computing resources like CPUs and GPUs, storage resources like memories and hard disks, network resources like bandwidths, and the like, may be provided externally. In addition, the edge cloud node 102 may also create a corresponding instance according to the mirror image, and provide various cloud computing services to the outside through the instance. The mirror image is a basic file required for creating an instance in the edge cloud node, and may be, for example, an image file such as an operating system, an application, or an operation configuration required for providing a cloud computing service for a user, and may be a file that meets the computing deployment requirement of the edge cloud node and is manufactured according to a certain format according to a specific series of files. In addition, the image may be various forms, such as a Virtual Machine (VM) image file, a container (Docker) image file, or various types of application package files, and the image form may be related to a virtualization technology that needs to be used by the cloud computing service, which is not limited in this embodiment. Corresponding to mirroring, the implementation of an instance may be a virtual machine, a container, an application, or the like.

For the network management node 103, which is a core control device in a core network of a network operator, the edge cloud nodes 102 are managed and controlled, and various parameters of the edge cloud nodes 102 can be obtained, for example: service quality parameters such as network delay, bandwidth and resource use condition, and fault information.

In this embodiment, the central management and control device 101 determines that an edge cloud node to be changed exists in the edge cloud network 100, including but not limited to the following determination methods:

the determination method is as follows: the central control device 101 receives a change request which is sent by a user terminal device and carries an identifier of an edge cloud node to be changed, and determines the edge cloud node to be changed according to the change request.

Determining a second mode: the central control device 101 receives a service quality parameter reported by the first edge cloud node, and determines the first edge cloud node as an edge cloud node to be changed if the service quality parameter of the first edge cloud node does not meet a service quality requirement.

Determining the third mode, the central control device 101 acquires the service quality parameter of the first edge cloud node from the network management node 103 of the network operator, and if the service quality parameter of the first edge cloud node does not meet the service quality requirement, determines the first edge cloud node as the edge cloud node to be changed.

Determining a mode four: the central control device 101 receives the fault information uploaded by the first edge cloud node, and then determines that the first edge cloud node is an edge cloud node to be changed.

In the first determination method, the change of the edge cloud node may be triggered by a user. The user can be a service demand party or a manager of the central management and control equipment. The central control device 101 receives a change request carrying an edge cloud node identifier to be changed, analyzes the edge cloud node identifier to be changed from the change request, and determines the edge cloud node to be changed.

In the second determination method, the central management and control device 101 receives the quality of service parameter reported by the first edge cloud node itself. And judging whether the service quality parameter of the first edge cloud node meets the service quality requirement, if so, continuing to provide service for the service demander, and if not, determining the first edge cloud node as the cloud node to be changed. For example, the network delay required by the service demander is 10ms, the network delay of the first edge cloud node in a specified time interval is 20ms, and at this time, the network delay of the first edge cloud node cannot meet the network delay requirement of the service demander, and then the first edge cloud node is determined to be the edge cloud node to be changed.

In the third determination mode, the central control device 101 receives the service quality parameter of the first edge cloud node obtained by the network management node 103 of the network operator, determines whether the service quality parameter of the first edge cloud node meets the service quality requirement, if the service quality parameter of the first edge cloud node meets the service quality requirement, the first edge cloud node continues to provide service for the service demander, and if the service quality parameter of the first edge cloud node does not meet the service quality requirement, determines that the first edge cloud node is the cloud node to be changed.

In the fourth confirmation method, after sending the fault, the first edge cloud node returns fault information to the central control device 101, and the central control device 101 confirms that the first edge cloud node is the edge cloud node to be changed according to the fault information.

In the above and following embodiments, a part of the edge cloud nodes 102 controlled by the central control device 101 uploads the service quality parameters reported by the central control device at regular time, or the central control device 101 may actively request the service quality parameters of each edge cloud node 102 from the part of the edge cloud nodes 102.

In this embodiment, after determining an edge cloud node to be changed in an edge cloud network, the central management and control device 101 selects a target edge cloud node capable of providing a service for a service demander from other edge cloud nodes in the edge cloud network. If a target edge cloud node exists in other edge cloud nodes of the edge cloud network 100, the central control device 101 controls the edge cloud node to be changed to perform service migration on the target edge cloud node, so that the target edge cloud node continues to provide service for a service demander, and the stability of the edge cloud service is improved. And if no edge cloud node capable of providing the service for the service demander exists in other edge cloud nodes in the edge cloud network, stopping the reselection operation of the edge cloud node. The edge cloud network 100 does not have an edge cloud node capable of providing service to the service demander, and the user can be reminded to maintain the edge cloud node to be changed, so that the edge cloud node to be changed can meet the service quality requirement of the service demander again.

In the above embodiment, the central management and control device 101 selects the target edge cloud node from other edge cloud nodes of the edge cloud network according to the position of the edge cloud node to be changed and/or the service quality requirement of the service demander. One way to implement this is that the central control device 101 determines whether there is a first candidate edge cloud node that meets the requirement of the quality of service among the edge cloud nodes controlled by the central control device 101; if the edge cloud nodes exist, according to the positions of the edge cloud nodes to be changed, selecting the edge cloud nodes, the distances between which and the edge cloud nodes to be changed meet a distance threshold value, from the first candidate edge cloud nodes as target edge cloud nodes. If not, the central management and control device 101 sends a node request to the network management node 103 to request the network management node 103 to acquire a target edge cloud node. For example, the central management and control device 101 selects a first candidate edge cloud node whose service quality parameter meets the service quality requirement from each edge cloud node 102 according to the service quality parameter uploaded by each edge cloud node 102 controlled by the central management and control device; and selecting the edge cloud node with the minimum distance to the edge cloud node to be changed from the first candidate edge cloud nodes as a target edge cloud node according to the position of the edge cloud node to be changed and/or the position of the first candidate edge cloud node. It should be noted that the number of the first candidate edge cloud nodes in the present application may be single or multiple, and the present application is not limited. The distance threshold is not limited, and can be adjusted according to actual conditions.

In the above embodiment, if there is no first candidate edge cloud node that meets the requirement of quality of service in the edge cloud nodes controlled by the central management and control device 101, the central management and control device 101 sends a node request to the network management node 103 to request the network management node 103 to acquire a target edge cloud node. Including but not limited to the following several implementations:

the implementation mode is as follows: the central control device 101 sends a node request to the network management node 103 to request the network management node 103 to select a second candidate edge cloud node satisfying the service quality requirement from the edge cloud nodes except the edge cloud node controlled by the central control device 101 and return information of the second candidate edge cloud node; the central control device 101 selects, as a target edge cloud node, an edge cloud node, from the second candidate edge cloud nodes, whose distance from the edge cloud node to be changed satisfies a distance threshold, according to the position of the second candidate edge cloud node.

The implementation mode two is as follows: the central management and control equipment 101 sends a node request to the network management node 103 to request a target edge node; the network management node 103 selects a second candidate edge cloud node satisfying the service quality requirement from the edge cloud nodes except the edge cloud node controlled by the central control device 101, and selects an edge cloud node having a distance meeting a distance threshold value from the second candidate edge cloud node as a target edge cloud node according to the position of the second candidate edge cloud node; the network management node 103 returns the information of the target edge cloud node to the central management and control device 101.

It should be noted that the distance may be a geographic location of the edge cloud node or a network location of the edge cloud node, which is not limited in the present application and may be adjusted according to a situation.

In this embodiment, after selecting a target edge cloud node, the central control device 101 determines whether the target edge cloud node has a service of an edge cloud node to be changed; if the target edge cloud node exists, the central control equipment 101 controls the target edge cloud node to provide service for a service demand party; and if not, controlling the edge cloud node to be changed to perform service migration to the target edge cloud node. Including but not limited to the following migration patterns:

the first migration mode: the central control equipment 101 sends a change notification to the edge cloud node to be changed and the target edge cloud node so that the edge cloud node to be changed and the target edge cloud node can establish communication connection; controlling a target edge cloud node to perform resource allocation so as to reserve resources required by providing services for a service demand party; and controlling the edge cloud node to be changed to send a mirror image required by the service to the target edge cloud node, so that the target edge cloud node creates an instance for providing the service for the service demand party on the reserved resource according to the mirror image.

And (2) a second migration mode: the central control equipment 101 controls the target edge cloud node to perform resource allocation so as to reserve resources required by service providing for a service demand party; acquiring a mirror image required by providing service for a service demander; and sending the mirror image to the target edge cloud node, so that the target edge cloud node creates an instance for providing service for the service demand party on the reserved resource according to the mirror image.

In the first migration mode, the central management and control device 101 controls the edge cloud node to be changed and the target edge cloud node to directly establish a communication connection for data exchange. The central control device 101 sends a change notification to the edge cloud node to be changed and the target edge cloud node, so that the edge cloud node to be changed and the target edge cloud node establish communication connection, the change notification may carry an IP address, a port number, an established connection type, an interface type, and the like of the other party, and the edge cloud node to be changed may send a mirror image, user data, instance information, and the like to the target edge cloud node, which helps the edge cloud node to be changed and the target edge cloud node to establish a data exchange channel. After the edge cloud node to be changed is in communication connection with the target edge cloud node, the central control equipment 101 controls the target edge cloud to allocate resources, so that the target edge cloud reserves resources required for providing services for a service demander; the central control device 101 controls the edge cloud node to be changed to send the mirror image required by the service to the target edge cloud node, and after receiving the required mirror image, the target edge cloud creates an instance for providing the service for the service demander on the reserved resource according to the mirror image.

In the second migration manner, the central management and control device 101 serves as a relay for data exchange between the edge cloud node to be changed and the target edge cloud node. The central control device 101 controls the target edge cloud node to perform resource allocation, so that the target edge cloud node reserves resources required for providing services for the service demander. The central control equipment 101 judges whether a mirror image required for providing service for a service demand party exists in a cache of the central control equipment; if the mirror image exists, the central control equipment 101 directly sends the mirror image to a target edge cloud node, and after the target edge cloud receives the required mirror image, an example for providing service for a service demand party is created on a reserved resource according to the mirror image; if the mirror image is not present, the central control device 101 sends a mirror image request to the edge cloud node to be changed to request to provide a mirror image required by the service for the service demander, the edge cloud node to be changed sends the mirror image provided by the service demander to the central control device 101, the central control device 101 sends the mirror image to the target edge cloud node, and after receiving the required mirror image, the target edge cloud creates an instance for providing the service for the service demander on the reserved resource according to the mirror image, so as to provide the cloud computing service for the service demander.

According to the embodiment of the application, when the edge cloud node to be changed exists in the central management and control device 101, after the target edge cloud node bearing the service of the edge cloud node to be changed is selected, service migration is performed, a service terminal is prevented, service continuity is guaranteed, and stability of edge cloud service is improved.

In this embodiment, after the central management and control device 101 controls the edge cloud node to be changed to perform service migration to the target edge cloud node, the service demander executes an access operation of the target edge cloud node; after accessing a target edge cloud node, a service demander sends an access success message to the central control device 101; after receiving the access success message sent by the service demander, the central management and control device 101 sends a resource release notification to the edge cloud node to be changed, so as to notify the edge cloud node to be changed to release resources. Obviously, after receiving the resource release notification, the edge cloud node to be changed may first determine whether to continue to bear the service of the service demander, and if so, not perform the resource release operation; if not, the resource releasing operation is executed again.

In the embodiment of the edge cloud network in the embodiment of the application, after determining that an edge cloud node to be changed for providing service for a service demander exists in the edge cloud network, a central management and control device of the edge cloud network selects an edge cloud node capable of meeting the service quality requirement of the service demander from other nodes of the edge cloud network, and after selecting a target edge cloud node, controls the edge cloud node to be changed to perform service migration to the target edge cloud node so that the target edge cloud node continues to provide service for the service demander, thereby preventing service interruption, ensuring service continuity, and improving stability of edge cloud service.

In addition to the edge cloud network provided above, some embodiments of the present application also provide a cloud node changing method, and it should be noted that the node changing method of the embodiments of the present application is not limited to the edge cloud network.

Fig. 2a is a schematic flowchart of a cloud node changing method according to an exemplary embodiment of the present disclosure. As shown in fig. 2a, the method comprises:

s211: determining edge cloud nodes to be changed in the edge cloud network, wherein the edge cloud nodes to be changed provide services for service demanders;

s212: selecting a target edge cloud node from other edge cloud nodes in the edge cloud network according to the position of the edge cloud node to be changed and/or the service quality requirement of a service demand side;

s213: and controlling the edge cloud node to be changed to perform service migration on the target edge cloud node so that the target edge cloud node provides service for the service demand party.

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 subjects of steps S201 to S203 may be device a; for another example, the execution subject of steps 201 and 202 may be device a, and the execution subject of step 203 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 201, 202, etc., are merely used for distinguishing different operations, and the sequence numbers do not represent any execution order per se. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. 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.

In this embodiment, the execution subject is a central control device in the edge cloud network, and the central control device uses an edge cloud node as a control object, and performs unified control on at least one edge cloud node in the edge cloud network in aspects of resource scheduling, mirror image management, instance control, operation and maintenance, network, security, and the like, so as to place the cloud computing service in each edge cloud node for processing. In terms of deployment implementation, the central management and control device may be deployed in one or more cloud computing data centers, or may be deployed in one or more conventional data centers, and the central management and control device may also be configured to form at least one edge cloud node that is managed by the central management and control device and a part of a network structure that forms an edge cloud network, which is not limited in this embodiment.

In this embodiment, the network management node is a core control device in a core network of a network operator, manages and controls a plurality of edge cloud nodes, and can obtain various parameters of the plurality of edge cloud nodes, for example: service quality parameters such as network delay, bandwidth and resource use condition, and fault information.

In this embodiment, the central management and control device determines that the edge cloud node to be changed exists in the edge cloud network, including but not limited to the following determination methods:

the determination method is as follows: the method comprises the steps that a central control device receives a change request which is sent by a user terminal device and carries an edge cloud node identification to be changed, and the edge cloud node to be changed is determined according to the change request.

Determining a second mode: the central control equipment receives the service quality parameters reported by the first edge cloud node, and if the service quality parameters of the first edge cloud node do not meet the service quality requirements, the first edge cloud node is determined to be the edge cloud node to be changed.

And determining the first edge cloud node as the edge cloud node to be changed if the service quality parameter of the first edge cloud node does not meet the service quality requirement.

Determining a mode four: and the central control equipment receives the fault information uploaded by the first edge cloud node, and then determines the first edge cloud node as the edge cloud node to be changed.

In the first determination method, the change of the edge cloud node may be triggered by a user. The user can be a service demand party or a manager of the central management and control equipment. The method comprises the steps that a central control device receives a change request carrying an edge cloud node identifier to be changed, analyzes the edge cloud node identifier to be changed from the change request, and determines the edge cloud node to be changed.

In the second determination method, the central management and control device receives the quality of service parameter reported by the first edge cloud node itself. And judging whether the service quality parameter of the first edge cloud node meets the service quality requirement, if so, continuing to provide service for the service demander, and if not, determining the first edge cloud node as the cloud node to be changed. For example, the network delay required by the service demander is 10ms, the network delay of the first edge cloud node in a specified time interval is 20ms, and at this time, the network delay of the first edge cloud node cannot meet the network delay requirement of the service demander, and then the first edge cloud node is determined to be the edge cloud node to be changed.

In the third determination method, the central control device receives a network management node of a network operator to obtain a service quality parameter of the first edge cloud node, determines whether the service quality parameter of the first edge cloud node meets a service quality requirement, if the service quality parameter of the first edge cloud node meets the service quality requirement, the first edge cloud node continues to provide service for a service demander, and if the service quality parameter of the first edge cloud node does not meet the service quality requirement, determines the first edge cloud node as a cloud node to be changed.

In the fourth confirmation method, after the first edge cloud node sends the fault, the first edge cloud node returns fault information to the central control device, and the central control device confirms that the first edge cloud node is the edge cloud node to be changed according to the fault information.

In the above and following embodiments, a part of the edge cloud nodes controlled by the central control device periodically upload the service quality parameters reported by the central control device, or actively request the service quality parameters of each edge cloud node from a part of the edge cloud nodes for the central control device.

In this embodiment, after determining the edge cloud node to be changed in the edge cloud network, the central management and control device selects a target edge cloud node capable of providing a service for a service demander from other edge cloud nodes of the edge cloud network. If the target edge cloud node exists in other edge cloud nodes of the edge cloud network, the central control equipment controls the edge cloud node to be changed to perform service migration on the target edge cloud node, so that the target edge cloud node continues to provide service for a service demand party, and the stability of the edge cloud service is improved. And if no edge cloud node capable of providing the service for the service demander exists in other edge cloud nodes in the edge cloud network, stopping the reselection operation of the edge cloud node. The edge cloud nodes which can provide services for the service demanders do not exist in the edge cloud network, and a user can be reminded to maintain the edge cloud nodes to be changed, so that the edge cloud nodes to be changed can meet the service quality requirements of the service demanders again.

In the above embodiment, the central management and control device selects the target edge cloud node from other edge cloud nodes of the edge cloud network according to the position of the edge cloud node to be changed and/or the service quality requirement of the service demander. One way to implement the method is that the central control device judges whether a first candidate edge cloud node meeting the service quality requirement exists in the edge cloud nodes controlled by the central control device; if the edge cloud nodes exist, according to the positions of the edge cloud nodes to be changed, selecting the edge cloud nodes, the distances between which and the edge cloud nodes to be changed meet a distance threshold value, from the first candidate edge cloud nodes as target edge cloud nodes. And if the target edge cloud node does not exist, the central control equipment sends a node request to the network management node so as to request the network management node to acquire the target edge cloud node. For example, the central management and control device selects a first candidate edge cloud node with a service quality parameter meeting a service quality requirement from each edge cloud node according to the service quality parameter uploaded by each edge cloud node controlled by the central management and control device; and selecting the edge cloud node with the minimum distance to the edge cloud node to be changed from the first candidate edge cloud nodes as a target edge cloud node according to the position of the edge cloud node to be changed and the position of the first candidate edge cloud node. It should be noted that the number of the first candidate edge cloud nodes in the present application may be single or multiple, and the present application is not limited. The distance threshold is not limited, and can be adjusted according to actual conditions.

In the above embodiment, if there is no first candidate edge cloud node that meets the requirement of the quality of service in the edge cloud nodes controlled by the central control device, the central control device sends a node request to the network management node to request the network management node to acquire a target edge cloud node. Including but not limited to the following several implementations:

the implementation mode is as follows: the method comprises the steps that a central control device sends a node request to a network management node to request the network management node to select a second candidate edge cloud node meeting the service quality requirement from edge cloud nodes except edge cloud nodes controlled by the central control device and return information of the second candidate edge cloud node; and the central control equipment selects edge cloud nodes, the distances between which and the edge cloud nodes to be changed meet the distance threshold value, from the second candidate edge cloud nodes as target edge cloud nodes according to the positions of the second candidate edge cloud nodes.

The implementation mode two is as follows: the method comprises the steps that a central control device sends a node request to a network management node to request a target edge node; the network management node selects a second candidate edge cloud node meeting the service quality requirement from edge cloud nodes except the edge cloud node controlled by the central control equipment, and selects an edge cloud node, the distance between which and the edge cloud node to be changed meets a distance threshold value, from the second candidate edge cloud node as a target edge cloud node according to the position of the second candidate edge cloud node; and the network management node returns the information of the target edge cloud node to the central management and control equipment.

In this embodiment, after selecting a target edge cloud node, the central management and control device determines whether the target edge cloud node has a service of an edge cloud node to be changed; if the target edge cloud node exists, the central control equipment controls the target edge cloud node to provide service for the service demander; and if not, controlling the edge cloud node to be changed to perform service migration to the target edge cloud node. Including but not limited to the following migration patterns:

the first migration mode: the method comprises the steps that a central control device sends a change notice to an edge cloud node to be changed and a target edge cloud node so that the edge cloud node to be changed and the target edge cloud node can establish communication connection; controlling a target edge cloud node to perform resource allocation so as to reserve resources required by providing services for a service demand party; and controlling the edge cloud node to be changed to send a mirror image required by the service to the target edge cloud node, so that the target edge cloud node creates an instance for providing the service for the service demand party on the reserved resource according to the mirror image.

And (2) a second migration mode: the central control equipment controls the target edge cloud nodes to perform resource allocation so as to reserve resources required by service providing for the service demander; acquiring a mirror image required by providing service for a service demander; and sending the mirror image to the target edge cloud node, so that the target edge cloud node creates an instance for providing service for the service demand party on the reserved resource according to the mirror image.

In the first migration mode, the central control device controls the edge cloud node to be changed and the target edge cloud node to directly establish communication connection for data exchange. The central control device sends change notifications to the edge cloud node to be changed and the target edge cloud node respectively so that the edge cloud node to be changed and the target edge cloud node can establish communication connection, the change notifications can carry an IP address, a port number, an established connection type, an interface type and the like of the opposite side, and the edge cloud node to be changed can send a mirror image, user data, instance information and the like to the target edge cloud node to help the edge cloud node to be changed and the target edge cloud node to establish a data exchange channel. After the edge cloud node to be changed is in communication connection with the target edge cloud node, the central control equipment controls the target edge cloud to distribute resources so that the target edge cloud reserves resources needed by providing services for a service demand party; the method comprises the steps that a central control device controls an edge cloud node to be changed to send a mirror image required by service to a target edge cloud node, and after the target edge cloud receives the required mirror image, an instance for providing service for a service demand party is created on a reserved resource according to the mirror image.

In the second migration mode, the central management and control device serves as a relay for data exchange between the edge cloud node to be changed and the target edge cloud node. The central control equipment controls the target edge cloud nodes to perform resource allocation so that the target edge cloud nodes reserve resources required by providing services for the service demanders. The central control equipment judges whether a mirror image required by providing service for a service demand party exists in a cache of the central control equipment; if the mirror image exists, the central control equipment directly sends the mirror image to a target edge cloud node, and after the target edge cloud receives the required mirror image, an example for providing service for a service demand party is created on the reserved resource according to the mirror image; if the mirror image is not available, the central control equipment sends a mirror image request to the edge cloud node to be changed to request to provide a mirror image required by the service for the service demander, the edge cloud node to be changed sends the mirror image provided by the service demander to the central control equipment, the central control equipment sends the mirror image to the target edge cloud node, and after the target edge cloud receives the required mirror image, an instance for providing the service for the service demander is created on the reserved resource according to the mirror image so as to provide cloud computing service for the service demander.

According to the embodiment of the application, when the edge cloud node to be changed exists in the central management and control equipment, after the target edge cloud node bearing the service of the edge cloud node to be changed is selected, service migration is carried out, a service terminal is prevented, the continuity of the service is guaranteed, and the stability of the edge cloud service is improved.

In this embodiment, after the central management and control device controls the edge cloud node to be changed to perform service migration to the target edge cloud node, the service demander executes an access operation of the target edge cloud node; after the service demander accesses the target edge cloud node, sending an access success message to the central control equipment; after receiving the access success message sent by the service demand party, the central control device sends a resource release notification to the edge cloud node to be changed so as to notify the edge cloud node to be changed to release resources. Obviously, after receiving the resource release notification, the edge cloud node to be changed may first determine whether to continue to bear the service of the service demander, and if so, not perform the resource release operation; if not, the resource releasing operation is executed again.

Fig. 2b is a flowchart illustrating a service providing method according to an exemplary embodiment of the present application. As shown in fig. 2b, the method comprises:

s221: determining edge cloud equipment to be changed in the edge cloud network, wherein the edge cloud equipment to be changed provides service for a service demand party;

s222: selecting target edge cloud equipment from other edge cloud equipment in the edge cloud network according to the position of the edge cloud equipment to be changed and/or the service quality requirement of a service demand side;

s223: and controlling the edge cloud equipment to be changed to perform service migration on the target edge cloud equipment so that the target edge cloud equipment provides service for the service demand party.

In this embodiment, the edge cloud appliance includes 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.

The process of service migration from the edge cloud device to be changed to the target edge cloud device may refer to the description of the foregoing embodiments, and the same technical effect may also be achieved, which is not described herein again.

With reference to the edge cloud node changing method in each of the above embodiments, fig. 3 is a schematic flow chart of another node changing method provided in an exemplary embodiment of the present application. As shown in fig. 3, the method includes:

s301: determining edge cloud nodes to be changed in the edge cloud network, wherein the edge cloud nodes to be changed provide services for service demanders;

s302: selecting a target edge cloud node from the edge cloud nodes controlled by the central management and control equipment according to the position of the edge cloud node to be changed and/or the service quality requirement of a service demand side;

s303: judging whether a target edge cloud node exists in edge cloud nodes controlled by central control equipment; if yes, go to step S304; if not, executing step S306;

s304: selecting edge cloud nodes with the distance meeting a distance threshold from the first candidate edge cloud nodes as target edge cloud nodes according to the positions of the edge cloud nodes to be changed;

s305: controlling the edge cloud node to be changed to perform service migration on the target edge cloud node so that the target edge cloud node provides service for a service demand party;

s306: and stopping the selection operation of the target edge cloud node.

For the node changing method in the embodiment of the present application, reference may be made to the description of the foregoing embodiments, and details are not described herein again.

With reference to the edge cloud node changing method in each of the foregoing embodiments, fig. 4 is a schematic flow chart of another node changing method provided in an exemplary embodiment of the present application. As shown in fig. 4, the method includes:

s401: determining edge cloud nodes to be changed in the edge cloud network, wherein the edge cloud nodes to be changed provide services for service demanders;

s402: selecting a target edge cloud node from the edge cloud nodes controlled by the central management and control equipment according to the position of the edge cloud node to be changed and/or the service quality requirement of a service demand side;

s403: judging whether a target edge cloud node exists in edge cloud nodes controlled by central control equipment; if yes, go to step S404; if not, go to step S405;

s404: selecting edge cloud nodes with the distance meeting a distance threshold from the first candidate edge cloud nodes as target edge cloud nodes according to the positions of the edge cloud nodes to be changed;

s405: sending a node request to a network management node;

s406: the network management node selects a second candidate edge cloud node meeting the service quality requirement from the edge cloud nodes except the edge cloud node controlled by the central control equipment and returns the information of the second candidate edge cloud node;

s407: according to the position of the second candidate edge cloud node, selecting an edge cloud node, the distance between which and the edge cloud node to be changed meets a distance threshold value, from the second candidate edge cloud node as a target edge cloud node;

s408: and controlling the edge cloud node to be changed to perform service migration on the target edge cloud node so that the target edge cloud node provides service for the service demand party.

With reference to the edge cloud node changing method in each of the foregoing embodiments, fig. 5 is a schematic flow chart of another node changing method provided in an exemplary embodiment of the present application. As shown in fig. 5, the method includes:

s501: determining edge cloud nodes to be changed in the edge cloud network, wherein the edge cloud nodes to be changed provide services for service demanders;

s502: selecting a target edge cloud node from other edge cloud nodes in the edge cloud network according to the position of the edge cloud node to be changed and/or the service quality requirement of a service demand side;

s503: and controlling the edge cloud node to be changed to perform service migration on the target edge cloud node so that the target edge cloud node provides service for the service demand party.

S504: receiving an access success message returned by a service demander after accessing a target edge cloud node;

s505: and sending a resource release notification to the edge cloud node to be changed to notify the edge cloud node to be changed to release resources.

In the embodiment of the cloud node changing method in the embodiment of the application, after determining that an edge cloud node to be changed, which provides service for a service demander, exists in an edge cloud network, a central control device of the edge cloud network selects an edge cloud node, which can meet the service quality requirement of the service demander, from other nodes of the edge cloud network, and after selecting a target edge cloud node, controls the edge cloud node to be changed to perform service migration to the target edge cloud node, so that the target edge cloud node continues to provide service for the service demander, service interruption is prevented, service continuity is ensured, and stability of edge cloud service is improved.

Fig. 6 is a flowchart illustrating a network expansion method according to an exemplary embodiment of the present application. As shown in fig. 6, the method includes:

s601: receiving a node request sent by a central control device in an edge cloud network, wherein the node request carries a service quality requirement of a service demand party;

s602: selecting edge cloud nodes meeting the service quality requirement from edge cloud nodes except the edge cloud nodes controlled by the central control equipment in the edge cloud network as candidate edge cloud nodes;

s603: and sending the information of the candidate edge cloud nodes to a central control device so that the central control device can select a target edge cloud node from the candidate edge cloud nodes, wherein the service on the edge cloud node to be changed in the edge cloud network can be migrated to the target edge cloud node.

In the embodiment of the network expansion method in the embodiment of the application, the network management device selects edge cloud nodes meeting the service quality requirement from edge cloud nodes except the edge cloud nodes controlled by the central control device in the edge cloud network; the method comprises the steps that a central control device selects a target edge cloud node from candidate edge cloud nodes so that services on the edge cloud node to be changed in an edge cloud network can be migrated to the target edge cloud node, and a network management device selects a new target edge cloud node for the edge cloud node to be changed, so that stability of edge cloud services is improved.

Fig. 7 is a schematic structural diagram of a central management and control device according to an exemplary embodiment of the present application. As shown in fig. 7, the center regulating apparatus includes: memory 701 and processor 702, as well as necessary components including communications component 703 and power component 704.

A memory 701 for storing a computer program and may be configured to store other various data to support operations on the central administration device. Examples of such data include instructions for any application or method operating on the central governing device.

The memory 701 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.

A communication component 703 for establishing a communication connection with the other device.

Processor 702, which may execute computer instructions stored in memory 701 for: determining edge cloud nodes to be changed in the edge cloud network, wherein the edge cloud nodes to be changed provide services for service demanders; selecting a target edge cloud node from other edge cloud nodes in the edge cloud network according to the position of the edge cloud node to be changed and/or the service quality requirement of a service demand side; and controlling the edge cloud node to be changed to perform service migration on the target edge cloud node so that the target edge cloud node provides service for the service demand party.

Optionally, when determining an edge cloud node to be changed in the edge cloud network, the processor 702 is specifically configured to: acquiring a service quality parameter of a first edge cloud node providing service for a service demander; and if the service quality parameter of the first edge cloud node does not meet the service quality requirement, determining the first edge cloud node as the edge cloud node to be changed.

Optionally, when acquiring the quality of service parameter of the first edge cloud node providing service for the service demander, the processor 702 is specifically configured to: receiving a service quality parameter reported by a first edge cloud node; or, the service quality parameter of the first edge cloud node is acquired from a network management node provided by a network operator.

Optionally, when the processor 702 selects a target edge cloud node from other edge cloud nodes in the edge cloud network according to the location of the edge cloud node to be changed and/or the service quality requirement of the service demander, the processor is specifically configured to: judging whether a first candidate edge cloud node meeting the service quality requirement exists in edge cloud nodes controlled by central control equipment; if the edge cloud nodes exist, according to the positions of the edge cloud nodes to be changed, selecting the edge cloud nodes, the distances between which and the edge cloud nodes to be changed meet a distance threshold value, from the first candidate edge cloud nodes as target edge cloud nodes.

Optionally, the processor 702 may be further configured to: if the edge cloud nodes do not exist, sending a node request to the network management node to request the network management node to select second candidate edge cloud nodes meeting the service quality requirement from the edge cloud nodes except the edge cloud nodes controlled by the central control equipment and return information of the second candidate edge cloud nodes; and according to the position of the second candidate edge cloud node, selecting an edge cloud node, the distance between which and the edge cloud node to be changed meets a distance threshold value, from the second candidate edge cloud node as a target edge cloud node.

Optionally, the processor 702 may be further configured to: judging whether an example for providing service for a service demand party on the edge cloud node to be changed is deployed on the target edge cloud node; and if not, controlling the edge cloud node to be changed to perform service migration to the target edge cloud node.

Optionally, when controlling the edge cloud node to be changed to perform service migration to the target edge cloud node, the processor 702 is specifically configured to: sending a change notice to the edge cloud node to be changed and the target edge cloud node so that the edge cloud node to be changed and the target edge cloud node can establish communication connection; controlling a target edge cloud node to perform resource allocation so as to reserve resources required by providing services for a service demand party; and controlling the edge cloud node to be changed to send a mirror image required by the service to the target edge cloud node, so that the target edge cloud node creates an instance for providing the service for the service demand party on the reserved resource according to the mirror image.

Optionally, when controlling the edge cloud node to be changed to perform service migration to the target edge cloud node, the processor 702 is specifically configured to: controlling a target edge cloud node to perform resource allocation so as to reserve resources required by providing services for a service demand party; acquiring a mirror image required by providing service for a service demander; and sending the mirror image to the target edge cloud node, so that the target edge cloud node creates an instance for providing service for the service demand party on the reserved resource according to the mirror image.

Optionally, after controlling the edge cloud node to be changed to perform service migration to the target edge cloud node, the processor 702 may further be configured to: receiving an access success message returned by a service demander after accessing a target edge cloud node; and sending a resource release notification to the edge cloud node to be changed to notify the edge cloud node to be changed to release resources.

Correspondingly, the embodiment of the application also provides a computer readable storage medium for storing the computer program. The computer-readable storage medium stores a computer program, and the computer program, when executed by one or more processors, causes the one or more processors to perform the steps in the respective method embodiment shown in fig. 2 a.

In the embodiment of the central management and control device in the embodiment of the application, after determining that an edge cloud node to be changed for providing service for a service demander exists in an edge cloud network, the central management and control device of the edge cloud network selects an edge cloud node capable of meeting the service quality requirement of the service demander from other nodes of the edge cloud network, and after selecting a target edge cloud node, controls the edge cloud node to be changed to perform service migration to the target edge cloud node so that the target edge cloud node continues to provide service for the service demander, thereby preventing service interruption, ensuring service continuity, and improving stability of edge cloud service.

Fig. 8 is a schematic structural diagram of a network management device according to an exemplary embodiment of the present application. As shown in fig. 8, the network management apparatus includes: a memory 801 and a processor 802, as well as necessary components including a communications component 803 and a power component 804.

A memory 801 for storing computer programs and may be configured to store other various data to support operations on the central administration device. Examples of such data include instructions for any application or method operating on the central governing device.

The memory 801 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.

A communication component 803 for establishing a communication connection with other devices.

The processor 802, may execute computer instructions stored in the memory 801 for: receiving a node request sent by a central control device in an edge cloud network, wherein the node request carries a service quality requirement of a service demand party; selecting edge cloud nodes meeting the service quality requirement from edge cloud nodes except the edge cloud nodes controlled by the central control equipment in the edge cloud network as candidate edge cloud nodes; and sending the information of the candidate edge cloud nodes to a central control device so that the central control device can select a target edge cloud node from the candidate edge cloud nodes, wherein the service on the edge cloud node to be changed in the edge cloud network can be migrated to the target edge cloud node.

Correspondingly, the embodiment of the application also provides a computer readable storage medium for storing the computer program. The computer-readable storage medium stores a computer program, and the computer program, when executed by one or more processors, causes the one or more processors to perform the steps in the respective method embodiment illustrated in fig. 6.

Fig. 9 is a schematic structural diagram of a central management and control device according to an exemplary embodiment of the present application. As shown in fig. 9, the center regulating apparatus includes: memory 901 and processor 902, as well as communications component 903 and power component 904.

A memory 901 for storing a computer program and may be configured to store other various data to support operations on the central administration device. Examples of such data include instructions for any application or method operating on the central governing device.

The memory 901 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.

A communication component 903 for establishing a communication connection with other devices.

The processor 902, which may execute computer instructions stored in the memory 901, is configured to: determining edge cloud equipment to be changed in the edge cloud network, wherein the edge cloud equipment to be changed provides service for a service demand party; selecting target edge cloud equipment from other edge cloud equipment in the edge cloud network according to the position of the edge cloud equipment to be changed and/or the service quality requirement of a service demand side; and controlling the edge cloud equipment to be changed to perform service migration on the target edge cloud equipment so that the target edge cloud equipment provides service for the service demand party.

Correspondingly, the embodiment of the application also provides a computer readable storage medium for storing the computer program. The computer-readable storage medium stores a computer program, and the computer program, when executed by one or more processors, causes the one or more processors to perform the steps in the respective method embodiment shown in fig. 2 b.

In the embodiment of the network management device in the embodiment of the application, the network management device selects edge cloud nodes meeting the service quality requirement from edge cloud nodes except the edge cloud node controlled by the central control device in the edge cloud network; the method comprises the steps that a central control device selects a target edge cloud node from candidate edge cloud nodes so that services on the edge cloud node to be changed in an edge cloud network can be migrated to the target edge cloud node, and a network management device selects a new target edge cloud node for the edge cloud node to be changed, so that stability of edge cloud services is improved.

The communication components of fig. 7-9 described above are configured to facilitate wired or wireless communication between the device in which the communication component is located and other devices. The device where the communication component is located can access a wireless network based on a communication standard, such as a WiFi, a 2G, 3G, 4G/LTE, 5G and other mobile communication networks, 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 one exemplary embodiment, the communication component further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

The power supply components of fig. 7-9 described above provide power to the various components of the device in which the power supply component 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.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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

1. A cloud node changing method is suitable for a center control device in an edge cloud network, and is characterized by comprising the following steps:

2. The method of claim 1, wherein determining edge cloud nodes to be changed in the edge cloud network comprises:

acquiring a service quality parameter of a first edge cloud node providing service for a service demander;

and if the service quality parameter of the first edge cloud node does not meet the service quality requirement, determining the first edge cloud node as the edge cloud node to be changed.

3. The method of claim 2, wherein obtaining quality of service parameters for a first edge cloud node providing service to a service demander comprises:

receiving a service quality parameter reported by a first edge cloud node;

or

The method comprises the steps of obtaining service quality parameters of a first edge cloud node from a network management node provided by a network operator.

4. The method of claim 1, wherein selecting a target edge cloud node from other edge cloud nodes in the edge cloud network according to the location of the edge cloud node to be changed and/or the quality of service requirement of a service demander comprises:

judging whether a first candidate edge cloud node meeting the service quality requirement exists in the edge cloud nodes controlled by the central control equipment;

if the edge cloud nodes exist, according to the positions of the edge cloud nodes to be changed, selecting the edge cloud nodes, the distances between which and the edge cloud nodes to be changed meet a distance threshold value, from the first candidate edge cloud nodes as target edge cloud nodes.

5. The method of claim 4, further comprising:

if the edge cloud nodes do not exist, sending a node request to the network management node to request the network management node to select second candidate edge cloud nodes meeting the service quality requirement from the edge cloud nodes except the edge cloud nodes controlled by the central control equipment and return information of the second candidate edge cloud nodes;

and according to the position of the second candidate edge cloud node, selecting an edge cloud node, the distance between which and the edge cloud node to be changed meets a distance threshold value, from the second candidate edge cloud node as a target edge cloud node.

6. The method of claim 1, further comprising:

judging whether an example for providing service for a service demand party on the edge cloud node to be changed is deployed on a target edge cloud node;

and if not, controlling the edge cloud node to be changed to perform service migration to the target edge cloud node.

7. The method according to claim 1 or 6, wherein controlling the edge cloud node to be changed to perform service migration to the target edge cloud node comprises:

sending a change notice to the edge cloud node to be changed and the target edge cloud node so that the edge cloud node to be changed and the target edge cloud node can establish communication connection;

controlling a target edge cloud node to perform resource allocation so as to reserve resources required by providing services for a service demand party;

and controlling the edge cloud node to be changed to send a mirror image required by the service to the target edge cloud node, so that the target edge cloud node creates an instance for providing the service for the service demand party on the reserved resource according to the mirror image.

8. The method according to claim 1 or 6, wherein controlling the edge cloud node to be changed to perform service migration to the target edge cloud node comprises:

acquiring a mirror image required by providing service for a service demander;

and sending the mirror image to a target edge cloud node, so that the target edge cloud node creates an instance for providing service for a service demand party on the reserved resource according to the mirror image.

9. The method according to claim 1, further comprising, after controlling the edge cloud node to be changed to perform service migration to the target edge cloud node:

receiving an access success message returned by a service demander after accessing a target edge cloud node;

and sending a resource release notification to the edge cloud node to be changed to notify the edge cloud node to be changed to release resources.

10. A network expansion method is suitable for a network management node, and is characterized by comprising the following steps:

11. An edge cloud network, comprising: the system comprises a network management node, a central management and control device and a plurality of edge cloud nodes;

12. A central management and control device, comprising: a memory and a processor;

the memory to store one or more computer instructions;

the processor to execute the one or more computer instructions to:

13. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by one or more processors, causes the one or more processors to perform acts comprising:

14. A network management device, comprising: a memory and a processor;

the memory to store one or more computer instructions;

the processor to execute the one or more computer instructions to:

15. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by one or more processors, causes the one or more processors to perform acts comprising:

16. A service providing method, comprising:

17. A central management and control device, comprising: a memory and a processor;

the memory to store one or more computer instructions;

the processor to execute the one or more computer instructions to:

18. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by one or more processors, causes the one or more processors to perform acts comprising: