CN112788088A - Network communication control method of multi-edge cloud and edge operation system - Google Patents

Network communication control method of multi-edge cloud and edge operation system Download PDF

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Publication number
CN112788088A
CN112788088A CN202010003441.2A CN202010003441A CN112788088A CN 112788088 A CN112788088 A CN 112788088A CN 202010003441 A CN202010003441 A CN 202010003441A CN 112788088 A CN112788088 A CN 112788088A
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edge computing
service
platform
edge
target service
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CN112788088B (en
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王韦程
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Industrial Technology Research Institute ITRI
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Industrial Technology Research Institute ITRI
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06Management of faults, events, alarms or notifications
    • H04L41/0654Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0659Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
    • H04L41/0661Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities by reconfiguring faulty entities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0803Configuration setting
    • H04L41/0813Configuration setting characterised by the conditions triggering a change of settings
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1001Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004Server selection for load balancing
    • H04L67/101Server selection for load balancing based on network conditions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/52Network services specially adapted for the location of the user terminal

Abstract

The invention discloses a network communication control method of multi-edge cloud, which comprises the steps of providing a target service for a terminal device by a first edge operation platform, judging a service abnormal condition of the first edge operation platform by a central control platform, reconfiguring the target service to a second edge operation platform and generating unloading information and a target service position by the central control platform according to the service abnormal condition, the target service and operation information of the second edge operation platform, transmitting the unloading information to the second edge operation platform by the central control platform, transmitting the target service position to the terminal device by the first edge operation platform or the second edge operation platform, and enabling the terminal device to be in communication connection with the second edge operation platform according to the target service position. Wherein the uninstalling information at least comprises the identity information of the terminal device and the identity information of the target service.

Description

Network communication control method of multi-edge cloud and edge operation system
Technical Field
The invention relates to a network communication control method, in particular to a network communication control method of a multi-edge cloud.
Background
With the popularization of mobile devices and the wide application of network services, such as video streaming, virtual reality, automatic driving, etc., and the increasing behavior of expanding business services into network services in various industries, the demand for mobile network traffic is also continuously increasing, so that the load traffic of a Backhaul (Backhaul) network is not enough to be used, and a remote cloud computing center cannot load huge computation. Previous network architectures have presented considerable challenges as communication technology has advanced.
In response to the above situation, a Mobile Edge Computing (MEC) architecture is proposed to solve the increasing traffic demand and computation load. As literally defined, mobile edge computing is an environment that provides cloud computing capability and Information Technology (IT) services at the edge of a mobile network, with the main concepts of reducing the computing pressure on core network devices and providing a platform for mobile operators to create specific mobile experiences for customers. However, when the current mobile edge computing architecture encounters an anomaly, the entire communication environment is often required to be re-established, which consumes a lot of time, and further causes poor experience of the user.
Disclosure of Invention
In view of the above, the present invention provides a network communication control method for multi-edge cloud and an edge computing system.
The network communication control method of the multi-edge cloud according to an embodiment of the present invention is applicable to a first edge computing platform, a second edge computing platform and a central control platform, wherein the central control platform performs information transfer with the first edge computing platform and the second edge computing platform. The network communication control method comprises the following steps: providing a target service for the terminal device by using the first edge operation platform; judging the occurrence of a service abnormal condition of the first edge operation platform by the central control platform; the central control platform reconfigures the target service to the second edge operation platform and generates unloading information and a target service position according to the service abnormal condition, the target service and the operation information of the second edge operation platform; the unloading information is transmitted to a second edge operation platform by the central control platform; and transmitting the target service position to the terminal device by using the first edge operation platform or the second edge operation platform, so that the terminal device is connected to the second edge operation platform according to the target service position in a communication manner. Wherein the uninstalling information at least comprises the identity information of the terminal device and the identity information of the target service.
An edge computing system according to an embodiment of the present invention includes an edge computing device and a central control device, wherein the edge computing device and the central control device are communicatively connected to each other. The edge computing device is used for providing a target service for the terminal device. The central control device is used for reconfiguring the target service to the other edge operation device and generating unloading information and a target service position according to the service abnormal condition, the target service and the operation information of the other edge operation device when the edge operation device is judged to have the service abnormal condition. The central control device is also used for transmitting the unloading information to the other edge computing device, and the first edge computing platform or the second edge computing platform transmits the target service position to the terminal device, so that the terminal device is connected to the other edge computing device according to the target service position in a communication mode. Wherein the uninstalling information at least comprises the identity information of the terminal device and the identity information of the target service.
Through the structure, the network communication control method and the edge computing system of the multi-edge cloud disclosed by the scheme can execute the reconfiguration of the edge computing platform for providing services in response to various abnormal service conditions, do not need to re-establish the whole communication environment when encountering the abnormal service conditions, have dynamic deployment capability without service interruption, and also have load balancing capability and remote backup capability.
The foregoing summary of the invention, as well as the following detailed description of the embodiments, is provided to illustrate and explain the principles and spirit of the invention, and to provide further explanation of the invention as claimed.
Drawings
FIG. 1 is a diagram illustrating a communication environment of an edge computing system according to an embodiment of the invention;
FIG. 2 is a block diagram of an edge computing system according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a network communication control method for a multi-edge cloud according to an embodiment of the invention;
fig. 4 is a signal transmission diagram illustrating a network communication control method for a multi-edge cloud according to an embodiment of the invention;
fig. 5 is a signal transmission diagram illustrating a network communication control method for a multi-edge cloud according to another embodiment of the invention;
fig. 6 is a partial flowchart of a network communication control method for a multi-edge cloud according to an embodiment of the present invention;
fig. 7 is a functional block diagram of an edge computing device according to another embodiment of the invention.
Description of the symbols:
1 edge arithmetic system
11 first edge arithmetic device
111. 131 user interface function module
112. 132 Domain name service Module
113. 135 resource management module
114 service management module
115 first service module
116 second service module
133 service location management module
134 service redirection module
13 central control device
21 terminal device
31 second edge arithmetic device
10 edge arithmetic device
101 memory
103 processor
S11-S15 steps
A11-A19 step
A21-A27 step
S21-S24 steps
Detailed Description
The detailed features and advantages of the present invention are described in detail in the following embodiments, which are sufficient for anyone skilled in the art to understand the technical contents of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art from the disclosure of the present specification, the claims and the accompanying drawings. The following examples further illustrate aspects of the present invention in detail, but are not intended to limit the scope of the invention in any way.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of a communication environment of an edge computing system according to an embodiment of the invention, and fig. 2 is a functional block diagram of the edge computing system according to an embodiment of the invention. As shown in fig. 1, the edge computing system 1 includes a first edge computing device 11 and a central control device 13, which are connected to each other in a communication manner, and the edge computing system 1 may be connected to a terminal device 21 in a communication manner or may be connected to a second edge computing device 31 in a communication manner. Further, the first edge computing device 11 can be communicatively connected to the terminal device 21, and the central control device 13 can be communicatively connected to the second edge computing device 31. It should be particularly noted that the number of the terminal devices 21 and the second edge computing devices 31 connected to the edge computing system 1 shown in fig. 1 is merely an example, and the edge computing system 1 may be connected to a plurality of terminal devices 21 and a plurality of second edge computing devices 31 at the same time. In addition, the second edge computing device 31 may also be connected to one or more terminal devices 21.
The first Edge Computing device 11 may be a Mobile Edge Computing (MEC) cloud, which may be referred to as an Edge cloud. The first edge computing device 11 is used for providing one or more services to the terminal device 21. The first edge computing device 11 can be connected to the terminal device 21 through a base station. In terms of network architecture, the first edge computing device 11 is located at the edge of the network and relatively close to the end device 21 at the user end. In detail, the Network architecture may use a Cloud server (Cloud server) or an Internet Network (Internet) as a Network core, the terminal device 21 is located at the periphery of the Network architecture and connected to the Cloud server or the Internet Network through a Network, and the Network edge may refer to a boundary between a Local Area Network (LAN) relatively close to a user end where the terminal device 21 is located and the Internet Network, but not limited thereto. Further, the first edge computing device 11 may be a single server with computing capability, or may be composed of a plurality of servers with different functions and connected to each other, and the terminal device 21 is a mobile electronic device such as a smart phone, a tablet, a notebook computer, and the like, which is not limited in the present invention.
More specifically, as shown in fig. 2, the first edge computing device 11 may include a User Plane Function (UPF) module 111, a Domain Name Service (DNS) module 112, a resource management module 113, a Service management module 114, a first Service module 115, and a second Service module 116. The user interface function module 111 of the first edge computing device 11 can be connected to the first service module 115 and the second service module 116 through an N6 interface, or can be connected to a base station through an N3 interface, and then connected to the terminal device 21 through the base station. The domain name service module 112 may respond to the service location query received from the terminal device 21 and wake up the corresponding service. For example, when the user sends a service location query of "www.youtube.com" through the terminal device 21, the dns module 112 responds "10.14.188. xxx" to the terminal device 21 and wakes up the YouTube service. The resource management module 113 may monitor, organize, and manage the resource status of the first edge computing device 11; the service management module 114 can monitor the operation status of the first service module 115 and the second service module 116, monitor the service operation status, and report an error, and can also start a new service module (for this embodiment, a module other than the first and second service modules 115 and 116); the first service module 115 and the second service module 116 can provide one or more network services, respectively.
The modules may be servers which are independently arranged and connected with each other, or a plurality of applications running in one or more servers, and the invention does not limit the number of physical servers running the modules. It should be noted that fig. 2 exemplarily shows that the first edge computing device 11 includes two service modules (the first service module 115 and the second service module 116), but the first edge computing device 11 may also include only one or more than two service modules, and the enabling states of the service modules may be dynamically adjusted, where the enabling states indicate whether services can be provided or not, for example. By providing the service to the terminal device 21 through the service module of the first edge computing device 11, the first edge computing device 11 can perform relatively complicated computation, thereby reducing the computation load of the terminal device 21. In addition, the first edge computing device 11 can also provide a service for storing or processing information that the terminal device 21 may access. The above services are only examples, but the services provided by the first edge computing device 11 are not limited thereto.
The central control device 13 is, for example, an Orchestrator (or), particularly, a data center with a 5G core, and is used for communicating information with the first edge computing device 11 and the second edge computing device 31. The second edge computing device 31 may have the same structure and function as the first edge computing device 11. The second edge computing device 31 may be a mobile edge computing cloud for providing one or more services to the terminal device. Further, the second edge computing device 31 may be a single server with computing capability, or may be composed of a plurality of servers with different functions and connected to each other. The second edge computing device 31 may also include a user interface function module, a domain name service module, a resource management module, a service management module, and one or more service modules as described above. The difference between the second edge computing device 31 and the first edge computing device 11 can be in the resource status (e.g., how much), the number and types of services that can be provided, and the delay (Latency) caused by providing services to a specific terminal device.
In addition, the central control device 13 may be communicatively connected to more edge computing devices in addition to the first and second edge computing devices 11 and 31, so as to collect information of each edge computing device, such as device Identification (ID), device location (e.g., IP of the edge computing device), ID of service provided, service location (e.g., IP of corresponding service module), ID of connected terminal device, resource status, delay, and the like, especially periodically. The central control device 13 may configure the communication connection relationship between the plurality of terminal devices and the plurality of edge computing devices according to the collected information. In other words, the central control device 13 of the present invention can allocate the terminal devices to specific edge computing devices according to the requirements of the terminal devices, and can also perform reconfiguration according to the conditions of the edge computing devices, wherein further implementation methods will be described later.
To further illustrate the architecture of the central control device 13, as shown in fig. 2, the central control device 13 may include a user interface function module 131, a domain name service module 132, a service location management module 133, a service redirection module 134, and a resource management module 135. The user interface function module 131 of the central control device 13 may be connected to the user interface function module 111 of the first edge computing device 11 through an N9 interface, and similarly, the user interface function module 131 may also be connected to other edge computing devices through an N9 interface. The domain name service module 132 has the same functions as the domain name service module 112, and will not be described herein. The service location management module 133 may have a database for recording services that can be provided by each edge computing device connected to the central control device 13, where the recording mode is, for example, a service ID, and the service location management module 133 may cooperate with the service redirection module 134 or the resource management module 135 to perform service reconfiguration, where details of the reconfiguration will be described later. The modules may be servers that are independently installed and connected to each other, or multiple applications running in one or more servers, and the invention is not limited to the number of physical servers running the modules. In other words, the central control device 13 can be implemented by a single server, or can be composed of a plurality of servers with different functions. In another embodiment, the central control device 13 itself may also be a mobile edge computing cloud with central control function, which can be connected to the terminal device 21 through a base station and provide services to the terminal device 21. In this embodiment, the central control device 13 may further include a service management module and one or more service modules in addition to the modules.
Fig. 1 to fig. 3 are also referenced, wherein fig. 3 is a flowchart illustrating a network communication control method for a multi-edge cloud according to an embodiment of the present invention. As shown in fig. 3, the network communication control method of the multi-edge cloud may include step S11: providing a target service for the terminal device by using the first edge operation platform; step S12: judging the occurrence of a service abnormal condition of the first edge operation platform by the central control platform; step S13: reconfiguring the target service to a second edge operation platform by the central control platform according to the service abnormal condition, the target service and the operation information of the second edge operation platform, and generating unloading (Offload) information and a target service position; step S14: the unloading information is transmitted to a second edge operation platform by the central control platform; and step S15: and the first edge operation platform or the second edge operation platform is used for transmitting the target service position to the terminal device, so that the terminal device is connected to the second edge operation platform according to the target service position in a communication way.
In one embodiment, the first edge computing platform, the second edge computing platform and the central control platform are respectively implemented by the first edge computing device 11, the second edge computing device 31 and the central control device 13 shown in fig. 1 and fig. 2; in another embodiment, the first edge computing platform, the second edge computing platform and the central control platform may be applications running on Virtual machines (Virtual machines) in the servers, respectively. The network communication control method of the multi-edge cloud shown in fig. 3 will be exemplarily described below with a first edge computing platform, a second edge computing platform, and a central control platform implemented by the first edge computing device 11, the second edge computing device 31, and the central control device 13.
In step S11, the first edge computing device 11 provides the terminal device 21 with a target service, such as an application service like artificial intelligence, virtual reality, augmented reality, auto-driving, etc., which is not limited by the present invention. Further, the communication connection between the first edge computing device 11 and the terminal device 21 is previously determined by the central control device 13 according to the computing information of the first edge computing device 11, wherein the computing information includes the resource status and the delay of the first edge computing device 11 providing the target service. In step S12, the central control device 13 determines that the first edge computing device 11 has an abnormal Service condition, wherein the abnormal Service condition may indicate a Service Down (Service Down), a Service jump Out (Service Swap Out) or a platform disable (MEC Down). In response to the abnormal service condition, in step S13-step S15, the central control device 13 is reconfigured to make another edge computing device (the second edge computing device 31) provide the target service (i.e. the service provided by the original first edge computing device 11) to the terminal device 21.
Please refer to fig. 1 to 4, wherein fig. 4 is a signal transmission diagram illustrating a network communication control method for a multi-edge cloud according to an embodiment of the present invention. In the operation state where the abnormal service condition is out of service or out of service, as shown in step a11 of fig. 4, the central control device 13 may receive a service failure signal associated with the abnormal service condition from the first edge computing device 11, so as to determine that the abnormal service condition occurs in the first edge computing device 11.
In particular, the service suspension may refer to that the service module originally providing the target service of the terminal device 21 is disabled and cannot provide the target service any more, and at this time, the service management module 114 may generate a corresponding service failure signal and provide the service failure signal to the service location management module 133 of the central control device 13. In addition, service removal may refer to: when the resource management module 113 of the first edge computing device 11 determines that the resource is insufficient, the service management module 114 shifts out the service with the priority order of the next-in-place, for example, disables the corresponding service module or changes the service module to provide another service, the priority order may be set according to actual requirements, which is not limited in the present invention. When the service management module 114 determines that the removed service is the target service originally provided to the terminal device 21, the service management module 114 may generate a corresponding service failure signal and provide the service failure signal to the service location management module 133 of the central control device 13. The service failure signal corresponding to the service suspension or removal may include the ID of the first edge computing device 11, the ID of the target service, and the ID of the one or more terminal devices 21 connected to the edge computing platform having the abnormal condition.
When the service position management module 133 of the central control device 13 receives the service failure signal and knows that the first edge computing device 11 has the abnormal service condition, the service position management module 133 and the service redirection module 134 can be reconfigured accordingly. In this embodiment, the reconfiguration includes a relocation (Re-locate) procedure and a redirection (Re-direct) procedure. Wherein the relocation procedure (step a12) may comprise: selecting an edge computing device capable of providing target service as a candidate edge computing platform, and determining the target edge computing platform according to the computing information of the candidate edge computing platform. As mentioned above, the central control device 13 can periodically collect information about the resource status of one or more connected edge computing devices and the delay of the provided service. Further, the service location management module 133 of the central control device 13 may obtain the target service ID from the service failure signal, select the edge computing device including the service module with the target service ID as the candidate edge computing platform, and then select the edge computing device with the best computing information as the target edge computing platform, i.e., the edge computing platform expected to provide the target service to the terminal device 21.
The determination of the optimal operation information may have different criteria depending on the type of the target service. For example, for the services of the virtual reality, the bandwidth resource status may be considered as a main consideration, but the invention is not limited thereto. In addition, the number of the terminal devices 21 with the target service requirement is also one of the important considerations, and the service location management module 133 can know the number of the terminal devices 21 with the target service requirement from the ID of the terminal device 21 included in the service failure signal, and determine whether the resource status of the candidate edge computing platform is sufficient to provide the target service to the number of the terminal devices 21. In particular, in the mobile edge computing environment, the delay of providing the target service may be a primary consideration, and further, the service location management module 133 may select the edge computing platform with the lowest delay from the candidate edge computing platforms whose resource statuses meet a specific criterion as the target edge computing platform. Further, the specific criterion may be a minimum threshold for providing the terminal device 21 with the target service.
When the service location management module 133 determines the target edge computing platform by performing the above relocation procedure, a redirection request is generated and sent to the service redirection module 134 (step a 13). The redirection request includes the ID of the target edge computing platform, the target service ID, and the ID of the terminal device 21. In the embodiment of fig. 3, the service location management module 133 selects the second edge computing device 31 as the target edge computing platform, so in this embodiment, the redirection request includes the ID of the second edge computing device 31. The service redirection module 134 transmits redirection information to the first edge computing device 11 according to the redirection request (step a14), i.e. the redirection procedure described above. The redirection information may include the ID of the second edge computing device 31, the ID of the terminal device 21, and the target service ID. Further, the user interface function 111 of the first edge computing device 11 may, depending on the redirection information, make a request to the user interface function of the second edge computing device 13 to establish a Connection with the terminal device 21, in particular, to establish a Connection (Session Connection) with the terminal device 21 via the N9 interface. More specifically, the first edge computing device 11 sends an Acknowledgement (ACK) back to the service redirection module 134 when receiving the redirection message, so as to indicate that the redirection message is successfully delivered.
The central control device 13 reconfigures the target service to the second edge computing device 31 through the above-mentioned procedure, generates the uninstall information and the target service location, and then transmits the uninstall information to the second edge computing device 31 and the target service location to the terminal device 21, respectively. Further, the service redirection module 134 of the central control device 13 transmits the offload information to the second edge computing device 31 (step a 15). More specifically, the service redirection module 134 waits for the first edge computing device 11 to return the confirmation message corresponding to step A14 before performing step A15. In this embodiment, the uninstall information includes the ID of the first edge computing device 11, the ID of the terminal device 21, and the target service ID. The second edge computing device 31 can grant the connection establishment request of the first edge computing device 11 according to the uninstalling information. In short, the first edge computing device 11 and the second edge computing device 31 can obtain the redirection information and the offloading information from the central control device 13, respectively, so as to establish a connection with the other party with respect to the terminal device 21 and the target service. In addition, when receiving the offload information, the second edge computing device 31 may obtain the location information (e.g., IP) of the corresponding service module as the target service location according to the target service ID in the offload information, and send a confirmation message back to the service redirection module 134 to indicate that the offload information is successfully delivered. Specifically, the confirmation message corresponding to step a15 includes the target service location.
The service redirection module 134 of the central control device 13 further transmits the target service location to the terminal device 21 through the first edge computing device 11. Further, the service redirection module 134 may wait for the second edge computing device 31 to send back the confirmation information corresponding to step a15, obtain the target service location from the confirmation information, and transmit the ID of the terminal device 21 and the target service location to the first edge computing device 11 (step a 16). The first edge computing device 11 obtains the target service location from the central control device 13, and can transmit the target service location to the terminal device 21 according to the ID of the terminal device 21 (step a 17). In particular, the information transmission in steps a16 and a17 may be performed by a domain name service notification (DNS Notify), HTTP 301, or HTTP 302. After obtaining the target service location, the terminal device 21 can connect to the service module providing the target service in the second edge computing device 31 through the connection between the first edge computing device 11 and the second edge computing device 31 (steps a18 and a 19).
In addition to the above-mentioned abnormal service condition due to service suspension or service removal, the network communication control method shown in fig. 3 can also be applied to the abnormal service condition due to platform failure. Referring to fig. 1-3 and 5, fig. 5 is a signal transmission diagram illustrating a network communication control method for a multi-edge cloud according to another embodiment of the present invention. In the embodiment shown in fig. 5, the resource management module 135 of the central control device 13 can periodically obtain its information from the first edge computing device 11. When the resource management module 135 determines that the information from the first edge computing device 11 has not been received after a certain period of time (step a21), it can determine that the first edge computing device 11 is disabled. The central control 13 can then be reconfigured. In this embodiment, the resource management module 135 generates a relocation request according to the abnormal service condition and transmits the relocation request to the service location management module 133 (step a 22). Further, the relocation request may include the ID of the first edge computing device 11 and the ID of the terminal device 21 originally connected to the first edge computing device 11.
The service location management module 133 performs a relocation procedure according to the relocation request to generate a relocation reply and returns the relocation reply to the resource management module 135 (step a 23). As described above, the service location management module 133 may record the service ID of each service of the edge computing device connected to the central control device 13. Therefore, the relocation procedure may include obtaining one or more services originally owned by the first edge computing device 11 according to the ID of the first edge computing device 11, and using the one or more services as target services, and then selecting candidate edge computing platforms and target edge computing platforms in the following manner are the same as those in the embodiment of fig. 4, and will not be described herein again. The relocation reply generated by the service location management module 133 may include the ID of the target edge computing platform, the ID of the target service, and the ID of the terminal device 21. In the embodiment of fig. 3, the second edge computing device 31 is selected as the target edge computing platform by the service location management module 133, and thus in this embodiment, the relocation reply includes the ID of the second edge computing device 31.
The central control device 13 reconfigures the target service to the second edge computing device 31 through the above-mentioned procedure, generates the uninstall information and the target service location, and then transmits the uninstall information to the second edge computing device 31 and the target service location to the terminal device 21, respectively. Further, the resource management module 135 of the central control device 13 generates the offload information including the ID of the terminal device 21 and the target service ID according to the relocation reply and transmits the offload information to the second edge computing device 31 (step a 24). In this way, the second edge computing device 31 can know that the target service is to be provided to the terminal device 21 subsequently according to the uninstall information, and when receiving the uninstall information, the second edge computing device 31 can obtain the location information (e.g., IP) of the corresponding service module as the target service location according to the target service ID in the uninstall information, and send a confirmation message back to the resource management module 135 to indicate that the uninstall information is successfully delivered. Specifically, the confirmation message includes the target service location.
The resource management module 135 of the central control device 13 further transmits the target service location to the terminal device 21 through the second edge computing device 31. Further, the resource management module 135 may wait for the second edge computing device 31 to send back the confirmation information, obtain the target service location from the confirmation information, and transmit the ID including the terminal device 21 and the target service location to the second edge computing device 31 (step a 25). The second edge computing device 31 obtains the target service location from the central control device 13, and can transmit the target service location to the terminal device 21 according to the ID of the terminal device 21 (step a 26). In particular, the information transmission in steps a25 and a26 may be performed by means of DNS Notify, HTTP 301, or HTTP 302. After acquiring the target service location, the terminal device 21 can connect to the service module providing the target service in the second edge computing device 31 (step a 27). Specifically, in this embodiment, the terminal device 21 is connected to the first edge computing device 11 and the second edge computing device 31 simultaneously before the edge computing platform conversion is performed. Specifically, the base station connected to the terminal 21 is originally connected to the first edge computing device 11 and the second edge computing device 31 respectively. Wherein the first edge computing device 11 is used as a primary edge computing platform, the second edge computing device 31 is used as a backup edge computing platform, and when the primary edge computing platform fails, the backup edge computing platform takes over the base station.
In an embodiment, before the first edge computing device 11 provides the terminal device target service (i.e., step S11 of fig. 3), the method for controlling network communication of multi-edge cloud may further include a configuration program for registering and requesting the terminal device 21 by the edge computing platform device. Please refer to fig. 1, fig. 3 and fig. 6 together, wherein fig. 6 is a partial flowchart of a network communication control method for a multi-edge cloud according to an embodiment of the present invention. Before step S11 of fig. 3, the network communication control method of the multi-edge cloud may further include step S21 shown in fig. 6: a first edge operation platform puts forward a registration requirement to a central control platform; s22: providing the operation information of the first edge operation platform to the central control platform by the first edge operation platform; s23: receiving a service requirement of the terminal device by using the central control platform, and judging that the service requirement corresponds to a target service; s24: and the central control platform allocates the target service to the first edge operation platform according to the target service and the operation information of the first edge operation platform.
Further, the establishment of the communication environment shown in fig. 1 includes steps S21 to S24. Referring to fig. 1, in steps S21 and S22, the first edge computing device 11 requests the central computing device 13 to register, the central computing device 13 can establish a connection therebetween, and after the first edge computing device 11 completes the registration, the first edge computing device 11 can provide its own computing information (including resource status, delay, etc.) to the central computing device 13, especially periodically. In addition, the second edge computing device 31 may also make a registration request to the central control device 13 before the reconfiguration program is executed, and provide its computing information to the central control device 13 after the registration is completed. In addition, there may be more edge computing devices to register with the central control device 13 and transmit their own computing information, which is not limited by the present invention.
When the edge computing system 1 receives the service request from the terminal device 21, the central control device 13 determines that the service request corresponds to the target service and configures the target service according to the target service and the computing information of the registered edge computing devices in steps S23 and S24. Further, the domain name service module of the first edge computing device 11, the second edge computing device 31, or other edge computing devices registered with the central control device 13 may receive a service request (e.g., a service location query) of the terminal device 21 within the communication range, and the edge computing device performing the receiving step may further transmit its identity information, service identity information, and identity information of the terminal device 21 to the service location management module 133 of the central control device 13. In this embodiment, the central control device 13 configures the target service to the first edge computing device 11 according to the operation information of the first edge computing device 11 being the optimal operation information corresponding to the target service. The example and description of the determination of the optimal operation information are the same as the determination of the optimal operation information in the reconfiguration procedure of the previous embodiment, and therefore, the description thereof is omitted here.
As mentioned above, in an embodiment, the central control device 13 may be a mobile edge computing cloud with a central control function, and may be connected to the terminal device 21 through a base station to provide services to the terminal device 21. In this embodiment, the central control device 13 may use itself as one of the choices of the target edge computing platform when executing the configuration procedure or the reconfiguration procedure described in the previous embodiment. Particularly, the central control device 13 sets its priority to be the last, that is, the central control device 13 determines whether it is suitable for providing the service after determining that all the connected edge computing devices are not suitable for providing the service. In addition, when the central control device 13 determines that no edge computing device can provide the service, it will generate a configuration failure signal to the terminal device 21.
The present invention also provides an edge computing device structure, and particularly, the first edge computing device 11 and the central control device 13 described in the previous embodiment can have the device structure. Referring to fig. 7, fig. 7 is a functional block diagram of an edge computing device according to another embodiment of the invention. As shown in fig. 7, the edge computing device 10 includes a memory 101 and a processor 103, and the processor 103 is electrically connected to the memory 101. The memory 101 is, for example, a flash memory, a read-only memory, a magnetic memory or other non-volatile storage media. The memory 101 stores a plurality of instructions. More specifically, the instructions at least include instructions corresponding to the steps executed by the first edge computing device 11/central control device 13 described in the previous embodiment. The processor 103, such as a central processing unit, a microcontroller, a programmable logic controller, etc., can execute the instructions stored in the memory 101 to perform the steps performed by the first edge computing device 11/central control device 13 described in the previous embodiment.
Through the above framework, the edge computing system, the edge computing device and the network communication control method of multi-edge cloud suitable for centralized communication environment provided by the invention can execute the reconfiguration of the edge computing platform providing service in response to various abnormal service conditions, do not need to re-establish the whole communication environment when encountering abnormal service conditions, have dynamic deployment capability without service interruption, and also have load balancing capability and long-distance backup capability.

Claims (20)

1. A network communication control method of multi-edge cloud is suitable for a first edge operation platform, a second edge operation platform and a central control platform, wherein the central control platform carries out information transmission with the first edge operation platform and the second edge operation platform, and the network communication control method comprises the following steps:
providing a target service for a terminal device by using the first edge operation platform;
judging that the first edge operation platform has a service abnormal condition by the central control platform;
the central control platform reconfigures the target service to the second edge operation platform according to the service abnormal condition, the target service and operation information of the second edge operation platform, and generates unloading information and a target service position;
transmitting the unloading information to the second edge computing platform by the central control platform; and
transmitting the target service position to the terminal device by using the first edge operation platform or the second edge operation platform, so that the terminal device is connected to the second edge operation platform according to the target service position in a communication way;
wherein the uninstall information at least includes an identity information of the terminal device and an identity information of the target service.
2. The method of claim 1, wherein the central control platform reconfiguring the target service to the second edge computing platform according to the abnormal service condition, the target service and the computing information of the second edge computing platform comprises:
selecting the second edge computing platform from the one or more candidate edge computing platforms according to the computing information of each candidate edge computing platform in the one or more candidate edge computing platforms and the target service; and
generating a redirection message according to the abnormal service condition and the selected result, and transmitting the redirection message to the first edge computing platform.
3. The method of claim 2, wherein the offload information further comprises an identity of the first edge computing platform, and the method further comprises establishing a connection between the first edge computing platform and the second edge computing platform according to the redirection information.
4. The network communication control method of claim 1, wherein the transmitting the target service location to the terminal device with the first edge computing platform or the second edge computing platform comprises:
the first edge computing platform obtains the target service position from the central control platform and transmits the target service position to the terminal device.
5. The network communication control method of claim 1, wherein the determining, by the central control platform, that the abnormal service condition occurs on the first edge computing platform comprises:
receiving a service failure signal associated with the service exception condition from the first edge computing platform by the central control platform;
wherein the service invalidation signal is generated by the first edge computing platform based on a priority decision to move the target service out.
6. The network communication control method of claim 1, wherein the determining, by the central control platform, that the abnormal service condition occurs on the first edge computing platform comprises:
receiving a service failure signal associated with the service exception condition from the first edge computing platform by the central control platform;
wherein the service disable signal is generated by the first edge computing platform when the target service is disabled.
7. The network communication control method of claim 1, wherein the abnormal service condition indicates that the first edge computing platform is disabled, and the transmitting the target service location to the terminal device by the first edge computing platform or the second edge computing platform comprises:
and the second edge computing platform acquires the target service position from the central control platform and transmits the target service position to the terminal device.
8. The network communication control method of claim 1, wherein the determining, by the central control platform, that the abnormal service condition occurs on the first edge computing platform comprises:
when the central control platform judges that a specific time length passes and the information from the first edge operation platform is not received, the central control platform judges that the first edge operation platform is disabled.
9. The method of claim 1, wherein the reconfiguring the target service to the second edge computing platform by the central control platform according to the abnormal service condition, the target service and the computing information of the second edge computing platform comprises:
selecting one or more candidate edge computing platforms capable of providing the target service, wherein the one or more candidate edge computing platforms each have a computation information, the one or more candidate edge computing platforms include the second edge computing platform, and the computation information includes a resource status and a delay corresponding to the target service; and
and selecting the second edge computing platform from the one or more candidate edge computing platforms by judging the computing information of the second edge computing platform as optimal computing information.
10. The network communication control method of claim 1, further comprising, before providing the target service to the terminal device by the first edge computing platform:
the first edge operation platform provides a registration request to the central control platform;
providing an operation information of the first edge operation platform to the central control platform by the first edge operation platform;
receiving a service requirement of the terminal device by the central control platform, and judging that the service requirement corresponds to the target service; and
and the central control platform allocates the target service to the first edge operation platform according to the target service and the operation information of the first edge operation platform.
11. An edge calculation system, comprising:
an edge computing device for providing a target service to a terminal device; and
a central control device, which is connected to the edge computing device in communication, and is used for reconfiguring the target service to the other edge computing device and generating an unloading information and a target service position according to the abnormal service condition, the target service and an operation information of the other edge computing device when judging that the edge computing device has an abnormal service condition, and is used for transmitting the unloading information to the other edge computing device, and enabling the edge computing device or the other edge computing device to transmit the target service position to the terminal device, so that the terminal device is connected to the other edge computing device in communication according to the target service position;
wherein the uninstall information at least includes an identity information of the terminal device and an identity information of the target service.
12. The edge computing system of claim 11, wherein the central device performing the reconfiguration of the target service to the another edge computing device based on the service exception condition, the target service, and the computing information of the another edge computing device comprises:
selecting the other edge computing device from the one or more candidate edge computing platforms according to the computing information of each candidate edge computing platform of the one or more candidate edge computing platforms and the target service; and
generating a redirection message according to the abnormal service condition and the selection, and transmitting the redirection message to the edge computing device.
13. The edge computing system of claim 12, wherein the offload information further comprises an identity of the edge computing device, and the edge computing device is further configured to establish a connection with another edge computing device according to the redirection information.
14. The edge computing system of claim 11, wherein the central control device is configured to cause the edge computing device or the other edge computing device to transmit the target service location to the terminal device by transmitting the target service location and the identity information of the terminal device to the edge computing device.
15. The edge computing system of claim 11, wherein the edge computing device is further configured to shift out the target service according to a priority to generate a service disable signal, and the central control device is further configured to receive the service disable signal from the edge computing device to determine that the service exception condition occurs in the edge computing device.
16. The edge computing system of claim 11, wherein the edge computing device is further configured to generate a service disable signal when the target service is terminated, and the central control device is further configured to receive the service disable signal from the edge computing device to determine that the service exception condition occurs in the edge computing device.
17. The edge computing system of claim 11, wherein the out-of-service condition indicates that the edge computing device is disabled, and wherein the central control device is configured to cause the edge computing device or the another edge computing device to transmit the target service location to the terminal device by transmitting the target service location to the another edge computing device.
18. The edge computing system of claim 11, wherein the central control device is further configured to determine that the edge computing device is disabled to determine that the abnormal service condition occurs in the edge computing device when determining that the information from the edge computing device is not received after a specific time period.
19. The edge computing system of claim 11, wherein the central device performing the reconfiguration of the target service to the another edge computing device based on the service exception condition, the target service, and the computing information of the another edge computing device comprises:
selecting one or more candidate edge computing platforms capable of providing the target service, wherein each of the one or more candidate edge computing platforms has a computation information, the one or more candidate edge computing platforms includes the other edge computing device, and the computation information includes a resource status and a delay corresponding to the target service; and
determining the operation information of the other edge operation device as an optimal operation information, and selecting the other edge operation device from the one or more candidate edge operation platforms.
20. The edge computing system of claim 11, wherein the edge computing device is further configured to provide a registration request to the central control device and provide a computing information of the edge computing device to the central control device before providing the target service to the terminal device, and wherein the central control device is further configured to receive a service request from the terminal device before the edge computing device provides the target service to the terminal device, determine that the service request corresponds to the target service, and configure the target service to the edge computing device according to the target service and the computing information of the edge computing device.
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