A self-negotiation access method and system for cloud-edge terminals

Abstract

The present invention relates to the field of data transmission technology, and specifically to a self-negotiation access method and system for cloud edge terminals, including: discovering several terminal devices to be accessed in the same edge node through broadcasting, and obtaining the data of several terminal devices to be accessed in the same edge node respectively based on the data access standard model; sorting several terminal devices to be accessed based on the sorting model, and obtaining the access order of the terminal devices to be accessed; determining the access mode of the terminal devices to be accessed based on the self-negotiation model; accessing according to the access mode and access order of the terminal devices to be accessed; and authenticating the terminal devices to be accessed through the authentication mechanism during access. The present invention can quickly determine the access order and mode of terminal devices through sorting and self-negotiation mechanisms, significantly improve access efficiency, and optimize resource allocation.

Description

Technical Field

[0001] The present invention relates to the field of data transmission technology, and in particular to a cloud-edge auto-negotiation access method and system. Background Art

[0002] With the rapid development of the Internet of Things, big data and cloud computing technologies, the demand for data interaction between various terminal devices, edge devices and cloud services has increased dramatically. In this context, how to efficiently achieve collaborative work between cloud, edge and end has put forward higher requirements for efficient, secure and real-time transmission and processing of data.

[0003] In the existing technology, the terminal access management capability is relatively poor. Traditional systems often use static configuration or preset rules to manage the access of terminal devices, which is difficult to cope with the challenges of large number, diverse types and dynamic changes of devices in the IoT environment. This static management method cannot be adjusted in real time to adapt to changes in network load, differences in device performance or sudden demands, resulting in low resource utilization and slow system response speed. Traditional access management methods lack intelligent elements and cannot perform intelligent scheduling and optimization based on factors such as device performance, network conditions, and business needs. This limits the improvement of the overall performance of the system and cannot meet users' needs for high-quality, personalized services. Summary of the invention

[0004] The purpose of the present invention is to provide a cloud-edge self-negotiation access method and system that can improve the access efficiency of terminal devices and avoid waste of resources.

[0005] To solve the above problems, the present invention provides a cloud-edge self-negotiation access method, comprising: providing a method of discovering a plurality of terminal devices to be accessed to the same edge node through broadcasting,

[0006] Based on the data access standard model, the data of several terminal devices to be accessed in the same edge node are obtained respectively;

[0007] Based on the sorting model, sorting the plurality of terminal devices to be connected, and obtaining an access order of the terminal devices to be connected;

[0008] Based on the auto-negotiation model, determine the access mode of the terminal device to be connected;

[0009] Access is performed according to the access mode and access sequence of the terminal device to be accessed;

[0010] During access, the terminal device to be accessed is authenticated through an authentication mechanism;

[0011] Among them, the several terminal devices to be connected belong to the same edge node, and the several edge nodes interact with several cloud nodes for data.

[0012] In another aspect of the present invention, preferably, the data access standard model includes a standardized data interface;

[0013] The standardized data interface is used to standardize the data transmission format, protocol and communication method between the terminal device to be accessed and the edge node and cloud node.

[0014] In another aspect of the present invention, preferably, the sorting model comprises:

[0015] Setting corresponding queues for the plurality of terminal devices to be connected according to the time of data interaction with the corresponding edge nodes;

[0016] According to the similarity algorithm, the similarity between the terminal device to be connected and the cloud node is calculated respectively, and the first cloud node of each terminal device to be connected is obtained;

[0017] If the resources of the first cloud node meet the needs of the terminal devices to be connected, the terminal devices to be connected are arranged in a first descending order according to the time to obtain a first queue;

[0018] If the resources of the first cloud node do not meet the needs of the terminal devices to be connected, the terminal devices to be connected are arranged in a second descending order according to the priority rule to obtain a second queue;

[0019] The priority of the first queue is always higher than that of the second queue.

[0020] In another aspect of the present invention, preferably, the similarity algorithm comprises calculating using the following formula:

[0021] ;

[0022] Among them, S(i,j) represents the similarity between the terminal device i to be connected and the cloud node j, It represents the average value of each resource demand of the terminal device i to be connected. represents the average value of each resource availability of cloud node j; X ik represents the demand for resource k of terminal device i to be connected, Y jk represents the resource availability of resource k in cloud node j, and n represents the total number of resources.

[0023] In another aspect of the present invention, preferably, the priority rule comprises calculating the priority value using the following formula:

[0024] ;

[0025] Where W(i) represents the priority value of the terminal device i to be connected, X ik represents the demand for resource k of terminal device i to be connected, Y jkrepresents the resource availability of resource k in cloud node j, n represents the total number of resources, and D i (t) represents the head-of-line delay of the terminal device to be connected, T i (t) represents the delay threshold of the terminal device to be connected.

[0026] In another aspect of the present invention, preferably, determining the access mode of the terminal device to be accessed based on the auto-negotiation model includes:

[0027] Analyze the characteristics of each terminal device to be connected, including device type, capacity requirements and resource requirements;

[0028] Analyzing the capacity of edge nodes, the capacity including bandwidth capacity and computing capacity;

[0029] Analyze the resource status of cloud nodes;

[0030] According to the characteristics of the terminal device, the capacity of the edge node and the resource status of the cloud node, the access mode of each terminal device to be connected is obtained with the objective function of minimizing the resource consumption of the cloud node and the capacity consumption of the edge node;

[0031] The objective functions include a first objective function of minimizing capacity consumption of edge nodes and a second objective function of minimizing resource consumption of cloud nodes;

[0032] If the access modes corresponding to the first objective function and the second objective function are the same, then the access mode of the terminal device to be accessed is determined;

[0033] If the access modes corresponding to the first objective function and the second objective function are different, the access mode with the smallest sum of the first objective function and the second objective function is determined as the access mode of the terminal device to be accessed.

[0034] In another aspect of the present invention, preferably, the first objective function is expressed by the following formula:

[0035] ;

[0036] Among them, F i-1-m represents the first objective function; Indicates the bandwidth capacity consumed by the terminal device i to be connected when using access method m. Indicates the computing capacity consumed by the terminal device i to be connected when using the access method m; 1 and 2 is the weight coefficient.

[0037] In another aspect of the present invention, preferably, the second objective function is expressed by the following formula:

[0038] ;

[0039] Among them, F i-2-m represents the second objective function; It represents the demand of resource k when the terminal device i to be connected adopts access method m, represents the available amount of resource k of cloud node j when the terminal device i to be connected adopts access method m; u k Represents the weight coefficient of resource k.

[0040] In another aspect of the present invention, preferably, the authentication mechanism includes:

[0041] Establishing a terminal device database, the terminal device database is used to store information of all terminal devices allowed to access;

[0042] Initiate access request;

[0043] Reverse analysis of the identification password of the terminal device;

[0044] Compare the parsed terminal device information with the features in the terminal device database;

[0045] If the comparison is successful, the terminal device is determined to be a legitimate terminal and is allowed to access;

[0046] If the comparison fails, the terminal device is judged as an illegal device and is not allowed to access;

[0047] Wherein, the terminal device includes an identification password.

[0048] In another aspect of the present invention, preferably, a cloud-edge-end auto-negotiation access system includes:

[0049] Discovery module: discovers several terminal devices to be connected to the same edge node through broadcasting.

[0050] Acquisition module: Based on the data access standard model, it acquires the data of several terminal devices to be accessed in the same edge node;

[0051] Sorting module: sorting the plurality of terminal devices to be connected based on the sorting model, and obtaining the access order of the terminal devices to be connected;

[0052] Auto-negotiation module: Determines the access mode of the terminal device to be connected based on the auto-negotiation model;

[0053] Access module: access according to the access mode and access sequence of the terminal device to be accessed;

[0054] Authentication module: when accessing, the terminal device to be accessed is authenticated through the authentication mechanism;

[0055] Among them, the several terminal devices to be connected belong to the same edge node, and the several edge nodes interact with several cloud nodes for data.

[0056] The above technical solution of the present invention has the following beneficial technical effects:

[0057] The present invention can quickly determine the access order and mode of terminal devices through sorting and self-negotiation mechanisms, significantly improving access efficiency. Based on the data access standard model and sorting model, the system can allocate network resources more reasonably, ensure high-priority priority transmission, and thus optimize resource allocation. The self-negotiation model enables the system to adaptively adjust according to different application scenarios and network environments, enhancing flexibility and scalability. Through the authentication mechanism, illegal devices can be effectively prevented from accessing the system, protecting the data security and privacy of the system. By reducing the delay and bandwidth pressure of data transmission and optimizing resource allocation, the overall operating cost of the system is reduced, the need for manual intervention is reduced, and the operation and maintenance cost is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is an overall flow chart of an embodiment of the present invention. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0060] Obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] In the description of the present invention, it should be noted that the terms “first” and “second” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0062] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0063] Embodiment 1

[0064] A self-negotiation access method for cloud edge terminals. Figure 1 FIG. 1 shows an overall flow chart of an embodiment of the present invention, as shown in FIG. Figure 1 As shown, including:

[0065] A multi-level architecture consisting of terminal devices, edge nodes and cloud nodes is constructed. As the middle layer, the edge node is responsible for collecting, processing and forwarding data from the terminal devices, and interacting with the cloud nodes efficiently. This architecture not only ensures the real-time nature of the data, but also reduces the processing pressure of the cloud nodes. Several terminal devices to be connected belong to the same edge node, and several edge nodes interact with several cloud nodes for data;

[0066] Through broadcasting, several terminal devices to be connected to the same edge node are discovered. Through broadcasting, the terminal devices in the same edge node can spontaneously form a self-organizing network. This mechanism enables newly added terminal devices to be quickly perceived by other devices and participate in data interaction.

[0067] Based on the data access standard model, the data of several terminal devices to be connected in the same edge node are obtained respectively; in this embodiment, the data access standard model includes a standardized data interface; the standardized data interface specifies the data transmission format, protocol and communication method between the terminal device to be connected and the cloud edge system; the data access standard model defines the standardized interface and protocol for data interaction between the terminal device and the edge node, ensuring that terminal devices of different manufacturers and different types can seamlessly access the system. At the same time, the model also stipulates standardized requirements such as data format and encoding method to facilitate unified processing and analysis of data.

[0068] Based on the sorting model, the plurality of terminal devices to be connected are sorted to obtain the access order of the terminal devices to be connected; the specific content of the sorting model is not limited here, and the sorting model can be a sorting of the terminal devices after comprehensive evaluation by comprehensively considering multiple dimensions such as performance parameters (such as processing power, storage capacity) of the terminal devices, data types (such as real-time requirements, data volume), and network conditions (such as bandwidth, delay). In this embodiment, the sorting model includes:

[0069] The corresponding queues are set for the terminal devices to be connected according to the time of data interaction with the edge node; first, the initial queue is set according to the time of data interaction between the terminal device and the edge node. This helps the system understand which devices are the latest to request access and which have been waiting for a while.

[0070] According to the similarity algorithm, the similarity between the terminal device to be connected and the cloud node is calculated respectively, and the first cloud node of each terminal device to be connected is obtained; the similarity between the terminal device to be connected and the cloud node is calculated by the similarity algorithm. The purpose of this step is to find the cloud node that is most suitable for the device for data processing and storage. The similarity can be calculated based on a variety of factors, such as data type, processing requirements, geographical location, etc. In this embodiment, the similarity algorithm includes calculating using the following formula:

[0071] ;

[0072] Among them, S(i,j) represents the similarity between the terminal device i to be connected and the cloud node j, It represents the average value of each resource demand of the terminal device i to be connected. represents the average value of each resource availability of cloud node j; X ik represents the demand for resource k of terminal device i to be connected, Y jk represents the resource availability of resource k in cloud node j, and n represents the total number of resources. By calculating the similarity between the terminal device to be connected and the cloud node, the device can be more accurately matched to the cloud node that best suits its resource needs, avoiding the situation of excess or insufficient resources, thereby improving the overall resource utilization. The similarity algorithm can identify which cloud nodes have higher resource availability and guide terminal devices that need more resources to these nodes, which helps to achieve load balancing between cloud nodes and prevent overloading of a single node.

[0073] If the resources of the first cloud node meet the needs of the terminal devices to be connected, the terminal devices to be connected are arranged in a first descending order according to the time to obtain a first queue; if the resources are sufficient, the device that requests first will be connected first.

[0074] If the resources of the first cloud node do not satisfy the terminal devices to be connected, the terminal devices to be connected are arranged in a second descending order according to the priority rule to obtain a second queue; the specific content of the priority rule is not limited here, and optionally, in this embodiment, the priority rule includes calculating the priority value using the following formula:

[0075] ;

[0076] Where W(i) represents the priority value of the terminal device i to be connected, X ik represents the demand for resource k of terminal device i to be connected, Y jk represents the resource availability of resource k in cloud node j, n represents the total number of resources, and D i (t) is the head-of-line delay of the terminal device to be accessed. The longer the waiting time in the queue, the greater the chance of being scheduled.i (t) The delay threshold of the terminal device to be connected. When the delay of the terminal device i to be connected exceeds this value, it will be discarded. By considering the resource demand and resource availability, it can ensure that devices with greater resource demand are given priority on cloud nodes with sufficient resources, thereby achieving a reasonable match between resource demand and supply. Introducing the head of line delay as a factor in priority calculation ensures that devices that have been waiting in the queue for a long time can get a higher priority. It prevents some devices from losing service opportunities due to long waiting times, thereby ensuring the fairness of the access process.

[0077] The priority of the first queue is always higher than that of the second queue.

[0078] Based on the auto-negotiation model, determine the access mode of the terminal device to be connected; the access mode here can be a protocol conversion mode, a transparent gateway mode or a customized mode;

[0079] The determining of the access mode of the terminal device to be accessed based on the auto-negotiation model includes:

[0080] Analyze the characteristics of each terminal device to be connected, including device type, capacity requirements and resource requirements; analyze the capacity of the edge node, including bandwidth capacity and computing capacity;

[0081] Analyze the resource status of cloud nodes;

[0082] According to the characteristics of the terminal device, edge node resources and cloud node load, the access mode of each terminal device to be connected is obtained with the objective function of minimizing the cloud node resource consumption and edge node capacity consumption;

[0083] The objective functions include a first objective function of minimizing capacity consumption of edge nodes and a second objective function of minimizing resource consumption of cloud nodes;

[0084] The first objective function is expressed using the following formula:

[0085] ;

[0086] Among them, F i-1-m represents the first objective function; Indicates the bandwidth capacity consumed by the terminal device i to be connected when using access method m. Indicates the computing capacity consumed by the terminal device i to be connected when using the access method m; 1 and 2 is the weight coefficient.

[0087] The second objective function is expressed using the following formula:

[0088] ;

[0089] Among them, F i-2-m represents the second objective function; It represents the demand of resource k when the terminal device i to be connected adopts access method m, represents the available amount of resource k of cloud node j when the terminal device i to be connected adopts access method m; u k Represents the weight coefficient of resource k.

[0090] If the access modes corresponding to the first objective function and the second objective function are the same, then the access mode of the terminal device to be accessed is determined;

[0091] If the access modes corresponding to the first objective function and the second objective function are different, the access mode with the smallest sum of the first objective function and the second objective function is determined as the access mode of the terminal device to be accessed.

[0092] Access is performed according to the access mode and access sequence of the terminal device to be accessed;

[0093] When accessing, the terminal device to be accessed is authenticated through an authentication mechanism. In this embodiment, the authentication mechanism includes the identification password included in the terminal device; establishing a terminal device database, which is used to store information of all terminal devices allowed to access; initiating an access request; reverse parsing the identification password of the terminal device; comparing the terminal device information obtained by the parsing with the features in the terminal device database; if the comparison is successful, the terminal device is determined to be a legal terminal and access is allowed; if the comparison is unsuccessful, the terminal device is determined to be an illegal device and access is not allowed.

[0094] The present invention can quickly determine the access order and mode of terminal devices through sorting and self-negotiation mechanisms, significantly improving access efficiency. Based on the data access standard model and sorting model, the system can allocate network resources more reasonably, ensure high-priority priority transmission, and thus optimize resource allocation. The self-negotiation model enables the system to adaptively adjust according to different application scenarios and network environments, enhancing flexibility and scalability. Through the authentication mechanism, illegal devices can be effectively prevented from accessing the system, protecting the data security and privacy of the system. By reducing the delay and bandwidth pressure of data transmission and optimizing resource allocation, the overall operating cost of the system is reduced, the need for manual intervention is reduced, and the operation and maintenance cost is further reduced.

[0095] Embodiment 2

[0096] A cloud-edge-end auto-negotiation access system, comprising:

[0097] Discovery module: discovers several terminal devices to be connected to the same edge node through broadcasting.

[0098] Acquisition module: Based on the data access standard model, it acquires the data of several terminal devices to be accessed in the same edge node;

[0099] Sorting module: sorting the plurality of terminal devices to be connected based on the sorting model, and obtaining the access order of the terminal devices to be connected;

[0100] Auto-negotiation module: Determines the access mode of the terminal device to be connected based on the auto-negotiation model;

[0101] Access module: access according to the access mode and access sequence of the terminal device to be accessed;

[0102] Authentication module: when accessing, the terminal device to be accessed is authenticated through the authentication mechanism;

[0103] Among them, the several terminal devices to be connected belong to the same edge node, and the several edge nodes interact with several cloud nodes for data.

[0104] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

[0105] The present invention has been described above with reference to the embodiments of the present invention. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, a person skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

[0106] Although the embodiments of the present invention have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention.

[0107] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A cloud-edge self-negotiation access method, characterized in that: include: Through broadcasting, several terminal devices to be connected to the same edge node are discovered. Based on the data access standard model, the data of several terminal devices to be accessed in the same edge node are obtained respectively; Based on the sorting model, sorting the plurality of terminal devices to be connected, and obtaining an access order of the terminal devices to be connected; Based on the auto-negotiation model, determine the access mode of the terminal device to be connected; Access is performed according to the access mode and access sequence of the terminal device to be accessed; During access, the terminal device to be accessed is authenticated through an authentication mechanism; The plurality of terminal devices to be connected belong to the same edge node, and the plurality of edge nodes interact with the plurality of cloud nodes for data exchange; The determining of the access mode of the terminal device to be accessed based on the auto-negotiation model includes: Analyze the characteristics of each terminal device to be connected, including device type, capacity requirements and resource requirements; Analyzing the capacity of edge nodes, the capacity including bandwidth capacity and computing capacity; Analyze the resource status of cloud nodes; According to the characteristics of the terminal device, the capacity of the edge node and the resource status of the cloud node, the access mode of each terminal device to be connected is obtained with the objective function of minimizing the resource consumption of the cloud node and the capacity consumption of the edge node; The objective functions include a first objective function of minimizing capacity consumption of edge nodes and a second objective function of minimizing resource consumption of cloud nodes; If the access modes corresponding to the first objective function and the second objective function are the same, then the access mode of the terminal device to be accessed is determined; If the access modes corresponding to the first objective function and the second objective function are different, determining the access mode with the smallest sum of the first objective function and the second objective function as the access mode of the terminal device to be accessed; The data access standard model includes a standardized data interface; The standardized data interface is used to standardize the data transmission format, protocol and communication method between the terminal device to be connected and the edge node and cloud node; The access mode is a protocol conversion mode, a transparent gateway mode or a customized mode.

2. The method according to claim 1, characterized in that The sorting model includes: Setting corresponding queues for the plurality of terminal devices to be connected according to the time of data interaction with the corresponding edge nodes; According to the similarity algorithm, the similarity between the terminal device to be connected and the cloud node is calculated respectively, and the first cloud node of each terminal device to be connected is obtained; If the resources of the first cloud node meet the needs of the terminal devices to be connected, the terminal devices to be connected are arranged in a first descending order according to the time to obtain a first queue; If the resources of the first cloud node do not meet the needs of the terminal devices to be connected, the terminal devices to be connected are arranged in a second descending order according to the priority rule to obtain a second queue; The priority of the first queue is always higher than that of the second queue.

3. The method according to claim 2, characterized in that The similarity algorithm includes calculating using the following formula: Among them, S(i,j) represents the similarity between the terminal device i to be connected and the cloud node j, It represents the average value of each resource demand of the terminal device i to be connected. represents the average value of each resource availability of cloud node j; X ik represents the demand for resource k of terminal device i to be connected, Y jk represents the resource availability of resource k in cloud node j, and n represents the total number of resources.

4. The method according to claim 3, characterized in that The priority rule includes calculating the priority value using the following formula: Where W(i) represents the priority value of the terminal device i to be connected, X ik represents the demand for resource k of terminal device i to be connected, Y jk represents the resource availability of resource k in cloud node j, n represents the total number of resources, and D i (t) represents the head delay of the terminal device i to be connected, T i (t) represents the delay threshold of the terminal device i to be connected.

5. The method according to claim 1, characterized in that The first objective function is expressed by the following formula: Among them, F i-1-m represents the first objective function; Indicates the bandwidth capacity consumed by the terminal device i to be connected when using access method m. It represents the computing capacity consumed by the terminal device i to be connected when adopting the access method m; ω1 and ω2 are weight coefficients.

6. The method according to claim 5, characterized in that The second objective function is expressed by the following formula: Among them, F i-2-m represents the second objective function; need(im,k) represents the demand for resource k when the terminal device i to be connected adopts the access method m, ava(jim,k) represents the available resource k of the cloud node j when the terminal device i to be connected adopts the access method m; u k Represents the weight coefficient of resource k.

7. The method according to claim 6, characterized in that The authentication mechanism includes: Establishing a terminal device database, the terminal device database is used to store information of all terminal devices allowed to access; Initiate access request; Reverse analysis of the identification password of the terminal device; Compare the parsed terminal device information with the features in the terminal device database; If the comparison is successful, the terminal device is determined to be a legitimate terminal and is allowed to access; If the comparison fails, the terminal device is judged as an illegal device and is not allowed to access; Wherein, the terminal device includes an identification password.

8. A cloud-edge self-negotiation access system, characterized in that: include: Discovery module: discovers several terminal devices to be connected to the same edge node through broadcasting. Acquisition module: Based on the data access standard model, it acquires the data of several terminal devices to be accessed in the same edge node; Sorting module: sorting the plurality of terminal devices to be connected based on the sorting model, and obtaining the access order of the terminal devices to be connected; Auto-negotiation module: Determines the access mode of the terminal device to be connected based on the auto-negotiation model; Access module: access according to the access mode and access sequence of the terminal device to be accessed; Authentication module: when accessing, the terminal device to be accessed is authenticated through the authentication mechanism; The plurality of terminal devices to be connected belong to the same edge node, and the plurality of edge nodes interact with the plurality of cloud nodes for data exchange; The determining of the access mode of the terminal device to be accessed based on the auto-negotiation model includes: Analyze the characteristics of each terminal device to be connected, including device type, capacity requirements and resource requirements; Analyzing the capacity of edge nodes, the capacity including bandwidth capacity and computing capacity; Analyze the resource status of cloud nodes; According to the characteristics of the terminal device, the capacity of the edge node and the resource status of the cloud node, the access mode of each terminal device to be connected is obtained with the objective function of minimizing the resource consumption of the cloud node and the capacity consumption of the edge node; The objective functions include a first objective function of minimizing capacity consumption of edge nodes and a second objective function of minimizing resource consumption of cloud nodes; If the access modes corresponding to the first objective function and the second objective function are the same, then the access mode of the terminal device to be accessed is determined; If the access modes corresponding to the first objective function and the second objective function are different, determining the access mode with the smallest sum of the first objective function and the second objective function as the access mode of the terminal device to be accessed; The data access standard model includes a standardized data interface; The standardized data interface is used to standardize the data transmission format, protocol and communication method between the terminal device to be connected and the edge node and cloud node; The access mode is a protocol conversion mode, a transparent gateway mode or a customized mode.

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