CN114449640A - Data synchronization method, information transmission method and equipment - Google Patents

Abstract

The invention provides a data synchronization method, an information transmission method and equipment, belonging to the technical field of wireless communication, wherein the data synchronization method applied to an edge node accessed by a terminal currently comprises the following steps: predicting a second edge node to be accessed next by the terminal according to the corresponding relation between the edge node coverage area and the road; and sending first information to the second edge node, so that the second edge node starts multi-operator data synchronization under the condition that at least part of information required for providing the service for the terminal is determined to be lost by the second edge node. The invention can reduce the time delay of data synchronization among multiple operators when the second edge node provides service for the terminal, provide corresponding service for the terminal in time, improve the service performance and the service quality, and improve the user experience and the safety.

Description

Data synchronization method, information transmission method and device

technical field

The present invention relates to the technical field of wireless communication, and in particular, to a data synchronization method, an information transmission method and equipment.

Background technique

Multi-access Edge Computing (MEC) realizes localized, close-range, and distributed deployment of content and services by migrating computing, storage, and service capabilities to the network edge. MEC for cellular vehicle wireless communication technology (Cellular-Vehicle to Everything, C-V2X) can use the characteristics of MEC to provide a low-latency, high-performance network environment for IoV services, and support the deployment of C-V2X with more local characteristics Serve.

Edge nodes are generally deployed at the network access layer or co-located with base stations. Different operators deploy applications on edge nodes, which can provide users with low-latency services. At the same time, different operators deploy roadside infrastructure (Road Side Unit, RSU) on the roadside, on the one hand, they can collect information, such as connecting to the traffic management platform to obtain road traffic flow information, traffic accident information, etc., and connecting roadside sensors to collect sensor information. ; On the other hand, RSU can forward information and spread the information in the form of broadcasting. At present, in order to provide services to vehicles, edge nodes need to rely on RSU and/or sensors to obtain necessary information in addition to the uploaded information of the vehicle.

However, for some operators, the necessary data may not be obtained in some areas, such as not deploying sensors locally, or not deploying RSUs in the area, etc., which will result in the inability to provide corresponding services to users in the area. In order to solve the above problems and provide users with continuous services, data synchronization can be performed among multiple operators.

When multi-operator data synchronization is performed, steps such as authentication, establishment of data links, and data transmission are required, which take a certain amount of time; at the same time, in some scenarios, such as vehicle trajectory prediction, pedestrian collision warning, etc., historical traffic The data is synchronized, which further increases the delay of data synchronization between multiple operators. The high latency of data synchronization between multiple operators will seriously affect the quality of IoV services and even cause serious traffic accidents.

At present, there are the following technologies: to make optimal caching decisions for mobile users under different operators, so as to improve the cache hit rate when users access data and reduce the access delay; Transmission delay; mainly for the data forwarding process, which simplifies the configuration of inter-domain paths. However, there is no technology that can reduce the data synchronization delay between multiple operators related to edge computing.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a data synchronization method, information transmission method and device, which are used to solve the problem of high delay in the current multi-operator data synchronization.

In order to solve the above technical problems, in the first aspect, the present invention provides a data synchronization method, which is applied to a first edge node, where the first edge node is an edge node currently accessed by a terminal, and the method includes:

According to the correspondence between the coverage area of the edge node and the road, predict the second edge node that the terminal will access next;

The first information is sent to the second edge node, so that the second edge node starts multi-operator data synchronization when it is determined that it lacks at least part of the information required to provide services for the terminal.

Optionally, predicting the second edge node that the terminal will access next according to the correspondence between the coverage area of the edge node and the road, including:

determining the first road where the terminal is currently located according to the first location where the terminal is currently located;

predicting the road the terminal will enter according to the moving direction of the terminal on the first road and the road topology;

According to the road the terminal will drive into and the correspondence between the coverage area of the edge node and the road, at least one second edge node is predicted to be obtained.

Optionally, predicting the road that the terminal will enter according to the moving direction of the terminal on the first road and the road topology structure, including:

predicting the road that the terminal will enter in a preset area according to the moving direction of the terminal on the first road and the road topology;

The distance between any position in the preset area and the first position is less than or equal to a preset value, and the preset value is determined according to the size of the coverage area of a single edge node.

Optionally, according to the moving direction of the terminal on the first road and the road topology, predicting the road that the terminal will enter in the preset area includes:

Predicting a road and a road segment that the terminal will enter in a preset area according to the moving direction of the terminal on the first road and the road topology;

According to the corresponding relationship between the road that the terminal will drive into and the coverage area of the edge node and the road, at least one second edge node is predicted to be obtained, including:

At least one of the second edge nodes is predicted to be obtained according to the corresponding relationship between the road that the terminal will drive into and its section and the coverage area of the edge node and the road; the corresponding relationship includes the relationship between the coverage area of the edge node and the road section. Correspondence.

In a second aspect, the present invention further provides a data synchronization method, which is applied to a second edge node, where the second edge node is a terminal that is predicted by the first edge node according to the corresponding relationship between the coverage area of the edge node and the road to connect to the next terminal. an incoming edge node, the first edge node is an edge node currently accessed by the terminal, and the method includes:

receiving the first information sent by the first edge node;

After receiving the first information, determine whether it lacks at least part of the information required to provide services for the terminal;

If it is determined to be missing, start multi-operator data synchronization.

Optionally, both the first edge node and the second edge node belong to the first operator;

The starting multi-operator data synchronization includes:

determining a third edge node, the third edge node belongs to the second operator, and the coverage area of the third edge node includes at least part of the coverage area of the second edge node;

In the case that it is determined that the third edge node can provide missing information of the information required by the second edge node to provide services for the terminal, perform data synchronization with the third edge node.

Optionally, the determining the third edge node includes:

The third edge node is determined according to the correspondence between the coverage area of the edge node of the second operator and the road.

Optionally, the performing data synchronization with the third edge node includes:

Receive the missing information of the information required to provide services for the terminal sent by the third edge node, so as to provide services for the terminal; or,

Sending the existing information required for providing services to the terminal to the third edge node, so that the third edge node provides services for the terminal.

Optionally, after the multi-operator data synchronization is started, the method further includes:

If the synchronized data is still unused after the preset period of time, the synchronized data is deleted; and/or,

If the terminal has left the coverage area of the second edge node, the synchronized data is deleted.

In a third aspect, the present invention also provides an information transmission method, which is applied to electronic equipment, including:

Determine the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station;

For each preset edge node, determine the road covered by the preset edge node according to the roads covered by all the preset base stations under the preset edge node;

According to the road covered by each of the preset edge nodes, establish a corresponding relationship between the coverage area of the edge node and the road;

Send at least part of the content in the correspondence between the coverage area of the edge node and the road to the target edge node in the preset edge nodes, where at least part of the content in the correspondence between the coverage area of the edge node and the road includes the The correspondence between the coverage area of the preset edge node adjacent to the target edge node and the road.

Optionally, the corresponding relationship between the edge node coverage area and the road includes the corresponding relationship between the edge node coverage area and the section of the road;

The determining the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station, including:

Starting from one end of the road, a dividing point is determined every preset distance, and the road is divided into multiple sections;

Calculate the first distance between each of the demarcation points and the center point of the coverage area of each preset base station, and compare it with the radius of the coverage area of the corresponding base station;

If the first distance is less than or equal to the radius of the coverage area of the corresponding base station, determine that the demarcation point is within the coverage area of the corresponding base station;

If both the first demarcation point and the second demarcation point on a road are within the coverage area of the corresponding base station, determine that the road section between the first demarcation point and the second demarcation point is within the coverage area of the corresponding base station; The first demarcation point and the second demarcation point are two adjacent demarcation points;

If only the third demarcation point is within the coverage area of the corresponding base station among the third demarcation point and the fourth demarcation point on a road, then according to the radius of the coverage area of the corresponding base station, between the third demarcation point and the third demarcation point An intermediate point is determined between the four demarcation points, and the road section between the intermediate point and the third demarcation point is determined to be within the coverage area of the corresponding base station.

In a fourth aspect, the present invention further provides a first edge node, where the first edge node is an edge node currently accessed by a terminal, including:

a prediction module, configured to predict the second edge node that the terminal will access next according to the correspondence between the coverage area of the edge node and the road;

a first information sending module, configured to send the first information to the second edge node, so that the second edge node starts multi-operation when it is determined that it lacks at least part of the information required to provide services for the terminal Business data synchronization.

Optionally, the prediction module includes:

a road determining unit, configured to determine the first road where the terminal is currently located according to the first location where the terminal is currently located;

a road prediction unit, configured to predict the road that the terminal will enter according to the moving direction of the terminal on the first road and the road topology;

An edge node prediction unit, configured to predict at least one of the second edge nodes according to the road the terminal will drive into and the corresponding relationship between the coverage area of the edge node and the road.

Optionally, the road predicting unit is configured to predict the road that the terminal will enter in a preset area according to the moving direction of the terminal on the first road and the road topology structure;

Wherein, the distance between any position in the preset area and the first position is less than or equal to a preset value, and the preset value is determined according to the size of the coverage area of a single edge node.

Optionally, the road predicting unit is configured to predict the road and the road segment that the terminal will enter in the preset area according to the moving direction of the terminal on the first road and the road topology structure;

The edge node prediction unit is configured to predict at least one of the second edge nodes according to the road to be entered by the terminal and the road segment and the corresponding relationship between the coverage area of the edge node and the road; the corresponding relationship includes Correspondence between edge node coverage area and road segments.

In a fifth aspect, the present invention further provides a second edge node, where the second edge node is the edge node that the terminal will access next, which is predicted by the first edge node according to the correspondence between the coverage area of the edge node and the road. The first edge node is the edge node currently accessed by the terminal, and the second edge node includes:

a first information receiving module, configured to receive the first information sent by the first edge node;

a determining module, configured to determine whether it lacks at least part of the information required to provide services for the terminal after receiving the first information;

The synchronization module is used to start multi-operator data synchronization if it is determined that it is missing.

Optionally, both the first edge node and the second edge node belong to the first operator;

The synchronization module includes:

a synchronization node determination unit, configured to determine a third edge node, the third edge node belongs to the second operator, and the coverage area of the third edge node includes at least part of the coverage area of the second edge node;

A synchronization unit, configured to perform data synchronization with the third edge node under the condition that it is determined that the third edge node can provide missing information of the information required by the second edge node to provide services for the terminal.

Optionally, the synchronization node determination unit is configured to determine the third edge node according to the correspondence between the coverage area of the edge node of the second operator and the road.

Optionally, the synchronization unit includes:

a receiving subunit, configured to receive the missing information of the information required for providing services for the terminal sent by the third edge node, so as to provide services for the terminal; or,

The sending subunit is configured to send the existing information required for providing services for the terminal to the third edge node, so that the third edge node provides services for the terminal.

Optionally, the second edge node further includes:

a first redundant data deletion module, configured to delete the synchronized data if the synchronized data is still not used after a preset time period; and/or,

The second redundant data deletion module is configured to delete synchronized data if the terminal has left the coverage area of the second edge node.

In a sixth aspect, the present invention also provides an electronic device, comprising:

a base station coverage determination module, configured to determine the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station;

an edge node coverage determination module, configured to, for each preset edge node, determine the road covered by the preset edge node according to the roads covered by all the preset base stations under the preset edge node;

a corresponding relationship establishing module, configured to establish a corresponding relationship between the coverage area of the edge node and the road according to the road covered by each of the preset edge nodes;

A corresponding relationship sending module, configured to send at least part of the content in the corresponding relationship between the coverage area of the edge node and the road to the target edge node in the preset edge nodes, and the content in the corresponding relationship between the coverage area of the edge node and the road. At least part of the content includes the correspondence between the coverage area of the preset edge node adjacent to the target edge node and the road.

Optionally, the corresponding relationship between the edge node coverage area and the road includes the corresponding relationship between the edge node coverage area and the section of the road;

The base station coverage determination module includes:

The road segment dividing unit is used to start from one end of the road, determine a dividing point every preset distance, and divide the road into multiple road segments;

A comparison unit, used to calculate the first distance between each of the demarcation points and the center point of the coverage area of each preset base station, and compare it with the radius of the coverage area of the corresponding base station;

a first coverage determination unit, configured to determine that the boundary point is within the coverage area of the corresponding base station if the first distance is less than or equal to the radius of the coverage area of the corresponding base station;

The second coverage determination unit is configured to determine the road segment between the first and second demarcation points if both the first demarcation point and the second demarcation point on a road are within the coverage area of the corresponding base station In the coverage area of the corresponding base station; the first demarcation point and the second demarcation point are two adjacent demarcation points;

The third coverage determination unit is configured to, if only the third demarcation point in the third demarcation point and the fourth demarcation point on a road is within the coverage area of the corresponding base station, then according to the radius of the coverage area of the corresponding base station An intermediate point is determined between the third demarcation point and the fourth demarcation point, and the road section between the intermediate point and the third demarcation point is determined to be within the coverage area of the corresponding base station.

In a seventh aspect, the present invention further provides a first edge node, where the first edge node is an edge node currently accessed by a terminal, including: a transceiver and a processor;

the processor, configured to predict the second edge node that the terminal will access next according to the correspondence between the coverage area of the edge node and the road;

the transceiver, configured to send the first information to the second edge node, so that the second edge node starts multi-operator in the case of determining that it lacks at least part of the information required to provide services for the terminal data synchronization.

Optionally, the processor is configured to determine the first road where the terminal is currently located according to the first location where the terminal is currently located;

The processor is further configured to predict the road that the terminal will enter according to the moving direction of the terminal on the first road and the road topology;

The processor is further configured to predict at least one of the second edge nodes according to the road that the terminal will drive into and the corresponding relationship between the coverage area of the edge node and the road.

Optionally, the processor is configured to predict, according to the moving direction of the terminal on the first road and the road topology, the road that the terminal will drive into within a preset area;

The distance between any position in the preset area and the first position is less than or equal to a preset value, and the preset value is determined according to the size of the coverage area of a single edge node.

Optionally, the processor is configured to predict, according to the moving direction of the terminal on the first road and the road topology structure, the road and the road segment that the terminal will enter in a preset area;

The processor is further configured to predict at least one of the second edge nodes according to the corresponding relationship between the road that the terminal will enter and the road segment and the coverage area of the edge node and the road; the corresponding relationship includes an edge The correspondence between the node coverage area and the road segment.

In an eighth aspect, the present invention further provides a second edge node, where the second edge node is the edge node that the terminal will access next, which is predicted by the first edge node according to the correspondence between the coverage area of the edge node and the road. The first edge node is an edge node currently accessed by the terminal, and the second edge node includes: a transceiver and a processor;

the transceiver, configured to receive the first information sent by the first edge node;

the processor, configured to, after receiving the first information, determine whether it lacks at least part of the information required to provide services for the terminal;

The transceiver is further configured to initiate multi-operator data synchronization if it is determined that it is missing.

Optionally, both the first edge node and the second edge node belong to the first operator;

the processor, configured to determine a third edge node, the third edge node belongs to the second operator, and the coverage area of the third edge node includes at least part of the coverage area of the second edge node;

The transceiver is configured to perform data synchronization with the third edge node when it is determined that the third edge node can provide missing information of the information required by the second edge node to provide services for the terminal.

Optionally, the processor is configured to determine the third edge node according to the correspondence between the coverage area of the edge node of the second operator and the road.

Optionally, the transceiver is configured to receive missing information sent by the third edge node that is required to provide services for the terminal, so as to provide services for the terminal; or,

The transceiver is configured to send the existing information required for providing services to the terminal to the third edge node, so that the third edge node provides services for the terminal.

Optionally, the processor is further configured to delete the synchronized data if the synchronized data is still not used after a preset time period; and/or, if the terminal has left the coverage area of the second edge node , the synchronized data is deleted.

In a ninth aspect, the present invention further provides an electronic device, comprising: a transceiver and a processor;

the processor, configured to determine the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station;

The processor is further configured to, for each preset edge node, determine the road covered by the preset edge node according to the roads covered by all the preset base stations under the preset edge node;

The processor is further configured to establish a corresponding relationship between the coverage area of the edge node and the road according to the road covered by each of the preset edge nodes;

The transceiver is configured to send at least part of the content in the correspondence between the coverage area of the edge node and the road to the target edge node in the preset edge nodes, and the content in the correspondence between the coverage area of the edge node and the road. At least part of the content includes the correspondence between the coverage area of the preset edge node adjacent to the target edge node and the road.

Optionally, the corresponding relationship between the edge node coverage area and the road includes the corresponding relationship between the edge node coverage area and the section of the road;

The processor is configured to start from one end of the road, determine a demarcation point every preset distance, and divide the road into a plurality of road segments;

The processor is further configured to calculate the first distance between each of the demarcation points and the center point of the coverage area of each preset base station, and compare it with the radius of the coverage area of the corresponding base station;

The processor is further configured to determine that the demarcation point is within the coverage area of the corresponding base station if the first distance is less than or equal to the radius of the coverage area of the corresponding base station;

The processor is further configured to determine a road segment between the first and second demarcation points if both the first demarcation point and the second demarcation point on a road are within the coverage area of the corresponding base station In the coverage area of the corresponding base station; the first demarcation point and the second demarcation point are two adjacent demarcation points;

The processor is further configured to, if only the third demarcation point is within the coverage area of the corresponding base station among the third demarcation point and the fourth demarcation point on a road, then according to the radius of the coverage area of the corresponding base station An intermediate point is determined between the third demarcation point and the fourth demarcation point, and the road section between the intermediate point and the third demarcation point is determined to be within the coverage area of the corresponding base station.

In a tenth aspect, the present invention further provides a first edge node, where the first edge node is an edge node currently accessed by a terminal, including a memory, a processor, and a memory, a processor, and an edge node stored on the memory and available on the processor A running program; when the processor executes the program, any of the above-mentioned steps in the data synchronization method applied to the first edge node are implemented.

In an eleventh aspect, the present invention further provides a second edge node, including a memory, a processor, and a program stored on the memory and running on the processor; the second edge node is the first edge The node predicts the next edge node that the terminal will access according to the correspondence between the coverage area of the edge node and the road, the first edge node is the edge node currently accessed by the terminal, and when the processor executes the program The steps in any of the above data synchronization methods applied to the second edge node are implemented.

In a twelfth aspect, the present invention further provides an electronic device, comprising a memory, a processor, and a program stored on the memory and running on the processor; the processor implements any of the above when executing the program. Steps in an information transmission method applied to an electronic device.

In a thirteenth aspect, the present invention further provides a readable storage medium, on which a program is stored, and when the program is executed by the processor, implements any of the above-mentioned steps in the data synchronization method applied to the first edge node or implements the above-mentioned Any of the steps in the data synchronization method applied to the second edge node or any of the above-mentioned steps in the information transmission method applied to an electronic device.

The beneficial effects of the above-mentioned technical solutions of the present invention are as follows:

In this embodiment of the present invention, the edge node currently accessed by the terminal can at least obtain the correspondence between the coverage areas and roads of all adjacent edge nodes, so as to predict the next edge node (that is, the second edge node) that the terminal will access to , so that the second edge node can determine in advance whether it lacks the information needed to provide services for the terminal, and if it is determined to be missing, it can start multi-operator data synchronization in advance, which can reduce the need for the second edge node to provide services for the terminal. The delay of data synchronization between them can timely provide corresponding services to terminals, improve service performance and service quality, and improve user experience and security.

Description of drawings

1 is a schematic flowchart of a data synchronization method in Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of an application scenario to which an embodiment of the present invention is applicable;

3 is a schematic diagram of a next-hop edge node prediction in an embodiment of the present invention;

4 is a schematic diagram of another next-hop edge node prediction in an embodiment of the present invention;

5 is a schematic flowchart of a data synchronization method in Embodiment 2 of the present invention;

6 is a schematic diagram of determining an edge node for multi-operator data synchronization in an embodiment of the present invention;

7 is a schematic flowchart of an information transmission method in Embodiment 3 of the present invention;

8 is a schematic structural diagram of a first edge node in Embodiment 4 of the present invention;

FIG. 9 is a schematic structural diagram of a second edge node in Embodiment 5 of the present invention;

10 is a schematic structural diagram of an electronic device in Embodiment 6 of the present invention;

11 is a schematic structural diagram of a first edge node in Embodiment 7 of the present invention;

12 is a schematic structural diagram of a second edge node in Embodiment 8 of the present invention;

13 is a schematic structural diagram of an electronic device in Embodiment 9 of the present invention;

FIG. 14 is a schematic structural diagram of a first edge node in Embodiment 10 of the present invention;

15 is a schematic structural diagram of a second edge node in Embodiment 11 of the present invention;

FIG. 16 is a schematic structural diagram of an electronic device according to Embodiment 12 of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present invention.

Please refer to FIG. 1. FIG. 1 is a schematic flowchart of a data synchronization method according to Embodiment 1 of the present invention. The method is applied to a first edge node, and the first edge node is an edge node currently accessed by a terminal. The method Include the following steps:

Step 11: According to the correspondence between the coverage area of the edge node and the road, predict the second edge node that the terminal will access next;

Step 12: Send the first information to the second edge node, so that the second edge node starts multi-operator data synchronization when it is determined that it lacks at least part of the information required to provide services for the terminal.

Among them, the corresponding relationship between the coverage area of the edge node and the road, specifically, the corresponding relationship (or called the matching relationship) between the edge node and the road in the coverage area, can be formed as a matching table between the coverage area of the edge node and the road, which is used for Establish matching relationships between roads and edge nodes.

The correspondence between the coverage area of the edge node and the road may be the correspondence between the coverage area of all edge nodes in a certain area and the road.

In addition, due to the different deployment locations of edge nodes of different operators and the different sizes and/or shapes of coverage areas of a single edge node, the correspondence between the coverage areas of edge nodes of different operators and roads may be different.

The predicted second edge node that the terminal will access (or referred to as being connected to) next may be more than one second edge node, and may be all possible access second edge nodes.

The first information can be specifically used to indicate to the second edge node that the second edge node is the predicted edge node that the terminal is about to enter, and the second information can also be used to indicate to the second edge node. The information required to provide the service for the terminal, that is, to inform the second edge node what information is required to provide the service for the terminal. When the first information is used to indicate to the second edge node the information required to provide the service for the terminal, the first edge node may sort out the information required to provide the service for the terminal in combination with the application subscribed by the terminal.

In addition, the first information may further include terminal-related historical data and authentication information. That is, the first edge node can synchronize the terminal-related historical data and authentication information to the second edge node.

If there is more than one second edge node, the first edge node needs to send the first information to every second edge node.

In this embodiment of the present invention, the edge node currently accessed by the terminal can at least obtain the correspondence between the coverage areas and roads of all adjacent edge nodes, so that the next edge node (that is, the second edge node) to be accessed by the terminal can be predicted, Therefore, the second edge node can determine in advance whether it lacks the information required to provide services for the terminal, and if it is determined to be missing, it can start multi-operator data synchronization in advance, which can reduce the multi-operator data synchronization when the second edge node provides services for the terminal. It can provide corresponding services to terminals in a timely manner, improve service performance and service quality, and improve user experience and security.

FIG. 2 is a schematic diagram of an application scenario to which an embodiment of the present invention can be applied. Please refer to FIG. 2 . A terminal (User Equipment, UE) signs a contract with operator A and receives services provided by operator A. The UE is currently in zone Z1 and predicts that the UE It is about to travel to zone Z2; both operator A and operator B have deployed edge platforms in zone Z2, and operator A cannot obtain necessary data in zone Z2; operator A and operator B have signed a contract and agreed to be operator A When the necessary data cannot be obtained, it can be obtained through operator B; operator A has the topology map of each edge node of operator B and the data source information available on each edge node.

At the current time T1, the UE is in the area Z1 and is connected to the edge node MEN-A1; at the next time T2, it is predicted that the UE is in the area Z2 and connected to the edge node MEN-A2; in the figure, the edge node MEN-B of operator B is also in the area Z2.

Some edge computing-related terms involved in the embodiments of the present invention are explained as follows:

MEO: MEC Orchestrator, MEC orchestrator, can maintain edge node topology, manage application packages, instantiate resource selection, etc.;

MEN: MEC Node, edge node;

MEMN: MEC Management Node, the management node of the edge node, is the upper-layer node of the MEN, and stores the topological map of the subordinate MENs, the information collected by the subordinate MENs, the related information of the edge management nodes of other operators, key information, etc.;

MEA: MEC Application, the application at the edge node;

MEP: MEC Platform, edge node platform.

In this embodiment of the present invention, the method steps performed by each edge node (including the first edge node, the second edge node, and the third edge node) may be specifically performed by an edge node platform on the corresponding edge node.

The above data synchronization method will be described below with an example.

In the embodiment of the present invention, before performing multi-operator data synchronization, it is necessary to predict the road that the UE is about to enter, so as to match the next edge node that the UE is about to connect to. The prediction and matching mechanism requires that the edge node platform (which can also become an edge computing platform) of the edge node (ie, the first edge node) currently accessed by the terminal is based on the road topology and the edge node topology map (the edge of the operator to which the first edge node belongs). Node topology map), predict the trajectory of the terminal, and match the next-hop edge node, which puts forward new requirements for the edge node platform.

Optionally, predicting the second edge node that the terminal will access next according to the correspondence between the coverage area of the edge node and the road, including:

determining the first road where the terminal is currently located according to the first location where the terminal is currently located;

Specifically, the edge node platform of the first edge node can obtain the GPS coordinates of the current location of the terminal based on the basic safety message (Basic SafetyMessage, BSM), and then can use the application programming interface (Application Programming Interface, API) of the map software to communicate with the UE. By inverse analysis of the GPS coordinates of the UE, the road L (ie, the first road) where the UE is currently located can be known.

predicting the road the terminal will enter according to the moving direction of the terminal on the first road and the road topology;

Specifically, the edge node platform of the first edge node can analyze whether there is a road fork ahead of the current position of the terminal based on the driving direction of the terminal and in combination with the shape of the road L where the terminal is located. If there is no branch road, the terminal will continue to form on road L. If there is a bifurcation, the edge node platform of the first edge node analyzes the topological relationship of the road L where the terminal is located based on the road topology structure. In the driving direction of the terminal, other roads connected to the current road L can be obtained. Assuming that the set of these roads is M, the set is the set of roads that the terminal may travel on subsequently.

According to the road the terminal will drive into and the correspondence between the coverage area of the edge node and the road, at least one second edge node is predicted to be obtained.

Specifically, if there is no road fork in the current position of the terminal, the next edge node to which the terminal will be connected is determined according to the corresponding relationship between the coverage area of the edge node and the road. If there is a road fork in the current position of the terminal, then based on the road set M, the edge nodes corresponding to each road (these edge nodes and the edge node currently accessed by the terminal are analyzed in combination with the corresponding relationship between the edge node coverage area and the road) are analyzed. belong to the same operator), it is assumed that the corresponding set of edge nodes is P. For the terminal, when driving out of the coverage area of the first edge node, it is possible to drive into the coverage area of any edge node in P.

Wherein, the road that the terminal will drive into includes the first road and/or the second road, and the second road is a road intersecting with the first road.

For example, referring to FIG. 3 , based on the BSM message and the map API, it is reversely parsed that the terminal is currently located on the road L and is within the coverage area of MEP-A1. Based on the road topology and the driving direction of the terminal, the predicted range that the terminal may enter later is the road set M={L2, L3, L4}, and the corresponding set of edge nodes P={MEP-A2, MEP-A3, MEP-A 4}.

In some optional specific implementation manners, the edge node platform of the first edge node may start the prediction and matching process of the next-hop edge node when detecting that the terminal is about to leave its coverage.

Optionally, predicting the road that the terminal will enter according to the moving direction of the terminal on the first road and the road topology structure, including:

predicting the road that the terminal will enter in a preset area according to the moving direction of the terminal on the first road and the road topology;

The distance between any position in the preset area and the first position is less than or equal to a preset value, and the preset value is determined according to the size of the coverage area of a single edge node.

In the embodiment of the present invention, what needs to be predicted is the next-hop edge node, so it is only necessary to predict the road that may enter in a certain area in front of the terminal. For example, if the diameter of the coverage area of a single edge node is within 1KM, it is possible to find out whether there is a branch road on the road L within a range of 1KM forward from the current position of the UE.

Optionally, according to the moving direction of the terminal on the first road and the road topology, predicting the road that the terminal will enter in the preset area includes:

Predicting a road and a road segment that the terminal will enter in a preset area according to the moving direction of the terminal on the first road and the road topology;

According to the corresponding relationship between the road that the terminal will drive into and the coverage area of the edge node and the road, at least one second edge node is predicted to be obtained, including:

At least one of the second edge nodes is predicted to be obtained according to the corresponding relationship between the road that the terminal will drive into and its section and the coverage area of the edge node and the road; the corresponding relationship includes the relationship between the coverage area of the edge node and the road section. Correspondence.

Since a single edge node may not cover all of a road, in other words, a road may be covered by multiple different edge nodes. Therefore, in order to accurately predict the next hop edge node. In the embodiment of the present invention, the road and its section that the terminal will enter in a certain area is predicted, and then the second edge node is predicted according to the correspondence between the coverage area of the edge node and the section of the road.

For example, referring to FIG. 4 , based on the BSM message and the map API, it is reversely parsed that the terminal is currently located on the road L and is within the coverage area of MEP-A1. Based on the road topology and the driving direction of the terminal, it is predicted that the range that the terminal may drive into later is the road set M={L2, L3, L4}. However, within 1KM from the current position of the terminal (the radius of the coverage area of a single edge node), the sections of the roads that the terminal may enter are all within the coverage of the edge node MEP-A2, so it can be determined that the edge that the terminal will access The node is the edge node MEP-A2.

In the embodiment of the present invention, the correspondence between the coverage area of the edge node and the road may be obtained according to the following method:

Starting from one end of the road, a dividing point is determined every preset distance, and the road is divided into multiple sections;

Calculate the first distance between each of the demarcation points and the center point of the coverage area of each preset base station, and compare it with the radius of the coverage area of the corresponding base station;

If the first distance is less than or equal to the radius of the coverage area of the corresponding base station, determine that the demarcation point is within the coverage area of the corresponding base station;

If both the first demarcation point and the second demarcation point on a road are within the coverage area of the corresponding base station, determine that the road section between the first demarcation point and the second demarcation point is within the coverage area of the corresponding base station; The first demarcation point and the second demarcation point are two adjacent demarcation points;

If only the third demarcation point is within the coverage area of the corresponding base station among the third demarcation point and the fourth demarcation point on a road, then according to the radius of the coverage area of the corresponding base station, between the third demarcation point and the third demarcation point Determine an intermediate point between the four demarcation points, and determine that the road section between the intermediate point and the third demarcation point is within the coverage area of the corresponding base station;

According to the corresponding relationship between the base station and the edge node, the corresponding relationship between the coverage area of the edge node and the road is determined.

In this application, there is no need to modify the terminal equipment, network, etc., but only need to build the edge node coverage area and road matching table on the edge computing platform, and then use the next-hop edge node prediction mechanism based on the road topology relationship. Which edge node of the operator obtains the data, and finally performs authentication, synchronizes the relevant historical data on the edge node first, deletes redundant data, further reduces the multi-operator data synchronization delay, and improves service performance.

Please refer to FIG. 5. FIG. 5 is a schematic flowchart of a data synchronization method according to Embodiment 2 of the present invention. The method is applied to a second edge node, and the second edge node is the first edge node according to the coverage area of the edge node. The edge node that the terminal will access next based on the prediction of the corresponding relationship of the road, the first edge node is the edge node currently accessed by the terminal, and the method includes the following steps:

Step 51: Receive the first information sent by the first edge node;

Specifically, the first information is that the first edge node predicts that the second edge node is the next edge node to be accessed by the terminal according to the corresponding relationship between the coverage area of the edge node and the road, and moves backward to the second edge node send;

Step 52: after receiving the first information, determine whether it lacks at least part of the information required to provide services for the terminal;

Step 53: If it is determined that it is missing, start multi-operator data synchronization.

Specifically, after the second edge node receives the first information, if the first information indicates what information is required to provide services for the terminal, the second edge node compares its own data to analyze whether it has the full amount of data, and if it has the full amount of data If data is missing, there is no need to synchronize data between multiple operators. If some data is missing, the process of data synchronization between multiple operators is started.

Wherein, for the first information, reference may be made to the foregoing method embodiments, and details are not repeated here.

In addition, there may be multiple second edge nodes. After receiving the first information, each second edge node needs to determine whether it has the full amount of data required to provide services for the terminal. If there is data missing, multi-operator is activated. data synchronization.

In this embodiment of the present invention, the edge node currently accessed by the terminal can at least obtain the correspondence between the coverage areas and roads of all adjacent edge nodes, so as to predict the next edge node (that is, the second edge node) that the terminal will access to , so that the second edge node can determine in advance whether it lacks the information needed to provide services for the terminal, and if it is determined to be missing, it can start multi-operator data synchronization in advance, which can reduce the need for the second edge node to provide services for the terminal. The delay of data synchronization between them can timely provide corresponding services to terminals, improve service performance and service quality, and improve user experience and security.

Optionally, both the first edge node and the second edge node belong to the first operator;

The starting multi-operator data synchronization includes:

determining a third edge node, the third edge node belongs to the second operator, and the coverage area of the third edge node includes at least part of the coverage area of the second edge node;

In the case that it is determined that the third edge node can provide missing information of the information required by the second edge node to provide services for the terminal, perform data synchronization with the third edge node.

Optionally, the determining the third edge node includes:

The third edge node is determined according to the correspondence between the coverage area of the edge node of the second operator and the road.

For example, please refer to FIG. 2 and FIG. 6. Currently, it is known that the edge node MEP-A2 of operator A covers the predicted area Z2 that the terminal is about to enter and the roads in the area, and operator A lacks some parts in the area Z2. Data D, start the multi-operator data synchronization process. Based on the correspondence between the coverage area of operator B's edge node and the road, the second edge node of operator A can find out the coverage of operator B in this area. As shown by the dotted line in Figure 6, operator B is There are two edge nodes in the zone Z2, namely MEP-B1 and MEP-B2.

The second edge node of operator A analyzes whether data D can be provided on MEP-B1 and MEP-B2 based on the data conditions of each edge node of operator B obtained when signing the contract. If both MEP-B1 and MEP-B2 can provide data D, MEP-A2 sends a data request to MEO-B of operator B, and MEO-B initiates an authentication process for MEP-A2. After the authentication is passed, historical data synchronization is performed between MEP-A2, MEP-B1 and MEP-B2.

Optionally, the performing data synchronization with the third edge node includes:

Receive the missing information of the information required to provide services for the terminal sent by the third edge node, so as to provide services for the terminal; or,

Sending the existing information required for providing services to the terminal to the third edge node, so that the third edge node provides services for the terminal.

During data synchronization between multiple operators, although the UE belongs to the contracted vehicle of operator A, if the UE obtains the key of RSU-B, it can also obtain the service provided by operator B through RSU, that is, operator A and operator Both provider B can serve as the service subject of the UE.

The entity that provides services for the UE and the corresponding scenarios determine the direction of historical data synchronization between operators A and B:

a. UE receives service from operator A in zone Z2

In this type of service mode, MEP-B needs to synchronize the missing historical data of MEP-A2 to MEP-A2. At this time, it mainly synchronizes the traffic environment data in the area.

For example, in a road traffic flow prediction scenario, MEP-B needs to synchronize historical traffic accident information and average road speed information in the area to MEP-A. MEP-A makes predictions based on historical data.

b. UE receives MEP-B service in area Z2

In this type of service mode, MEP-A1 needs to synchronize the UE-related historical data to MEP-B in advance, and MEP-B provides services for the UE based on the UE's historical data.

For example, for the service of vehicle trajectory prediction, MEP-A needs to synchronize the historical trajectory information of the UE to MEP-B, and MEP-B can provide the corresponding trajectory prediction service for the UE based on the historical driving trajectory data of the vehicle.

In addition, if MEP-B1 and MEP-B2 cannot provide the missing data of MEP-A1, operator A needs to obtain data through other channels, such as obtaining data through other contracted operators, or obtaining data from a high-level platform.

Optionally, after the multi-operator data synchronization is started, the method further includes:

If the synchronized data is still unused after the preset time period, the synchronized data is deleted; and/or,

If the terminal has left the coverage area of the second edge node, the synchronized data is deleted.

The synchronized data may include data sent by the third edge node, that is, data obtained by starting multi-operator data synchronization, and may also include terminal-related historical data and authentication information synchronized by the first edge node.

In the above process, in order to reduce the delay of data synchronization and improve the accuracy of UE next-hop edge node prediction, each edge node in the edge node set P has obtained UE-related historical data provided by MEP-A1; but In practice, the UE may only be connected to one of the edge nodes, and the data on other edge nodes becomes redundant data. Therefore, a redundant data identification and deletion mechanism is set up on each edge node.

Assuming that the time when MEP-A1 synchronizes data to each edge node in set P is T1, then within 1 hour from time T1, if the data synchronized on the edge nodes in set P is not used, the data will be identified as redundant. The remaining data is deleted.

The embodiment of the present invention provides a technical solution corresponding to the first embodiment, having the same inventive concept, and can achieve the same technical effect. For details, please refer to the first embodiment, which will not be repeated here.

Please refer to FIG. 7. FIG. 7 is a schematic flowchart of an information transmission method provided in Embodiment 3 of the present invention. The method is applied to an electronic device and includes the following steps:

Step 71: Determine the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station;

Step 72: For each preset edge node, determine the road covered by the preset edge node according to the roads covered by all the preset base stations under the preset edge node;

Step 73: According to the road covered by each of the preset edge nodes, establish a corresponding relationship between the coverage area of the edge node and the road;

Step 74: Send at least part of the content in the correspondence between the coverage area of the edge node and the road to the target edge node in the preset edge nodes, where at least part of the content in the correspondence between the coverage area of the edge node and the road includes: The correspondence between the coverage area of the preset edge node adjacent to the target edge node and the road.

Wherein, the target edge node predicts the next-hop edge node for a terminal that has already accessed the target edge node and is about to leave the target edge node according to at least part of the corresponding relationship between the coverage area of the edge node and the road, The first information is sent to the next-hop edge node, so that the next-hop edge node can determine in advance whether the information required to provide services for the terminal is missing, and if it is missing, start multi-operator data synchronization in advance.

Each edge node has a certain coverage. For the edge node located in the operator's network, the coverage area of the edge node is the coverage area of the base station below it. However, in actual application, due to the coverage of a single edge node The range is irregular and cannot be described accurately, which brings many difficulties to practical application, and there is currently no corresponding solution to correspond edge nodes to roads. Therefore, the present application proposes to design a matching table between edge node coverage areas and roads, to map specific road segments to each edge node, and to apply them in subsequent edge node matching related work.

Optionally, the corresponding relationship between the edge node coverage area and the road includes the corresponding relationship between the edge node coverage area and the section of the road;

The determining the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station, including:

Starting from one end of the road, a dividing point is determined every preset distance, and the road is divided into multiple sections;

Calculate the first distance between each of the demarcation points and the center point of the coverage area of each preset base station, and compare it with the radius of the coverage area of the corresponding base station;

Since the coverage shape of each base station is a hexagon, it can be approximated as a circle in this embodiment of the present invention.

If the first distance is less than or equal to the radius of the coverage area of the corresponding base station, determine that the demarcation point is within the coverage area of the corresponding base station;

If both the first demarcation point and the second demarcation point on a road are within the coverage area of the corresponding base station, determine that the road section between the first demarcation point and the second demarcation point is within the coverage area of the corresponding base station; The first demarcation point and the second demarcation point are two adjacent demarcation points;

If only the third demarcation point is within the coverage area of the corresponding base station among the third demarcation point and the fourth demarcation point on a road, then according to the radius of the coverage area of the corresponding base station, between the third demarcation point and the third demarcation point An intermediate point is determined between the four demarcation points, and the road section between the intermediate point and the third demarcation point is determined to be within the coverage area of the corresponding base station.

In this embodiment of the present invention, the edge node currently accessed by the terminal (that is, the target edge node) can at least obtain the correspondence between the coverage areas and roads of all adjacent edge nodes, so that the next-hop edge node to be accessed by the terminal can be predicted, Therefore, the next-hop edge node can determine in advance whether it lacks the information needed to provide services for the terminal. If it is determined to be missing, it can start multi-operator data synchronization in advance, which can reduce the need for the next-hop edge node to operate more when providing services for the terminal. The delay of data synchronization between merchants can be timely provided to terminals, so as to improve service performance and service quality, and improve user experience and security.

For example, the coordinates of each base station are the center point of its coverage area, the GPS coordinates (Gx, Gy) of the center point G of the base station coverage area are known, and the radius r of the base station coverage area is known.

First, divide the road into segments: starting from the starting point of the road, take a dividing point every certain distance, and divide the road into small segments. Number the boundary points of each road in sequence, assuming that the coordinates of the road boundary points are R0(R0x, R0y), R1(R1x, R1y)...Rn(Rnx, Rny);

Then, match the road demarcation points to the coverage of the base station: calculate the distance between the coordinates of each demarcation point of the road segment and the center point of each base station, and compare it with the radius r.

小于半径r，则表示该分界点在该基站覆盖范围内，否则不在覆盖范围内。if distance

If it is less than the radius r, it means that the demarcation point is within the coverage of the base station, otherwise it is not within the coverage.

By comparing the distance d between all road demarcation points and the center point of the base station and the coverage radius r of the base station, all road demarcation points can be matched to the coverage of all base stations.

Finally, match road segments with base stations, edge nodes: for each base station, all road demarcation points within its range have been found. Sort the demarcation points in the order of numbers. For adjacent numbers, it means that the road segment is within the range of the base station. For a number that exists alone, it means that part of this road segment is within the range of the base station, and part of it is within the range of the adjacent base station. Inside. At this time, it is necessary to insert an intermediate point between the two dividing points of the road, that is, based on the center point of the base station, draw a circle with a radius r, and the intersection with the road is the intermediate point. In this way, the road section within the range of the base station is determined, the matching between the road section and the base station is completed, and a matching table between the road section and the base station is formed.

Further, since the corresponding relationship between the base station and the edge node is known, the road section and the edge node can be corresponded to form a corresponding relationship table between the road section, the base station and the edge node. An example of a table is as follows:

From the query table, it can be known that the road segments R0 and R1 are within the coverage of the base station C1, the road segment R2 is within the coverage of the base station C2, and the road segments R0, R1 and R2 are all within the coverage of the edge node M1.

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of a first edge node according to Embodiment 4 of the present invention. The first edge node is an edge node currently accessed by a terminal, and the first edge node 80 includes:

The prediction module 81 is configured to predict the second edge node that the terminal will access next according to the correspondence between the coverage area of the edge node and the road;

The first information sending module 82 is configured to send the first information to the second edge node, so that the second edge node, in the case that it is determined that it lacks at least part of the information required to provide services for the terminal, starts multi-processing. Carrier data synchronization.

Optionally, the prediction module 81 includes:

a road determining unit, configured to determine the first road where the terminal is currently located according to the first location where the terminal is currently located;

a road prediction unit, configured to predict the road that the terminal will enter according to the moving direction of the terminal on the first road and the road topology;

An edge node prediction unit, configured to predict at least one of the second edge nodes according to the road the terminal will drive into and the corresponding relationship between the coverage area of the edge node and the road.

Optionally, the road predicting unit is configured to predict the road that the terminal will enter in a preset area according to the moving direction of the terminal on the first road and the road topology structure;

Wherein, the distance between any position in the preset area and the first position is less than or equal to a preset value, and the preset value is determined according to the size of the coverage area of a single edge node.

Optionally, the road predicting unit is configured to predict the road and the road segment that the terminal will enter in the preset area according to the moving direction of the terminal on the first road and the road topology structure;

The edge node prediction unit is configured to predict at least one of the second edge nodes according to the road to be entered by the terminal and the road segment and the corresponding relationship between the coverage area of the edge node and the road; the corresponding relationship includes Correspondence between edge node coverage area and road segments.

This embodiment of the present invention is a product embodiment corresponding to the above-mentioned method embodiment 1, and thus will not be repeated here. For details, please refer to the above-mentioned first embodiment.

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of a second edge node according to Embodiment 5 of the present invention. The second edge node is a terminal predicted by the first edge node according to the correspondence between the coverage area of the edge node and the road. The next edge node to be accessed, the first edge node is the edge node currently accessed by the terminal, and the second edge node 90 includes:

a first information receiving module 91, configured to receive the first information sent by the first edge node;

a determining module 92, configured to determine whether it lacks at least part of the information required to provide services for the terminal after receiving the first information;

The synchronization module 93 is configured to start multi-operator data synchronization if it is determined that it is missing.

Optionally, both the first edge node and the second edge node belong to the first operator;

The synchronization module 93 includes:

a synchronization node determination unit, configured to determine a third edge node, the third edge node belongs to the second operator, and the coverage area of the third edge node includes at least part of the coverage area of the second edge node;

A synchronization unit, configured to perform data synchronization with the third edge node under the condition that it is determined that the third edge node can provide missing information of the information required by the second edge node to provide services for the terminal.

Optionally, the synchronization node determination unit is configured to determine the third edge node according to the correspondence between the coverage area of the edge node of the second operator and the road.

Optionally, the synchronization unit includes:

a receiving subunit, configured to receive the missing information of the information required for providing services for the terminal sent by the third edge node, so as to provide services for the terminal; or,

The sending subunit is configured to send the existing information required for providing services for the terminal to the third edge node, so that the third edge node provides services for the terminal.

Optionally, the second edge node 90 further includes:

a first redundant data deletion module, configured to delete the synchronized data if the synchronized data is still not used after a preset time period; and/or,

The second redundant data deletion module is configured to delete synchronized data if the terminal has left the coverage area of the second edge node.

This embodiment of the present invention is a product embodiment corresponding to the second embodiment of the above method, and thus will not be repeated here. For details, please refer to the second embodiment above.

Please refer to FIG. 10. FIG. 10 is a schematic structural diagram of an electronic device according to Embodiment 6 of the present invention. The electronic device 100 includes:

a base station coverage determination module 101, configured to determine the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station;

The edge node coverage determination module 102 is configured to, for each preset edge node, determine the road covered by the preset edge node according to the roads covered by all the preset base stations under the preset edge node;

The corresponding relationship establishing module 103 is used to establish the corresponding relationship between the coverage area of the edge node and the road according to the road covered by each of the preset edge nodes;

The corresponding relationship sending module 104 is configured to send at least part of the content in the correspondence between the coverage area of the edge node and the road to the target edge node in the preset edge nodes, where the corresponding relationship between the coverage area of the edge node and the road is At least part of the content includes the correspondence between the coverage area of the preset edge node adjacent to the target edge node and the road.

Optionally, the corresponding relationship between the edge node coverage area and the road includes the corresponding relationship between the edge node coverage area and the section of the road;

The base station coverage determination module 101 includes:

The road segment dividing unit is used to start from one end of the road, determine a dividing point every preset distance, and divide the road into multiple road segments;

A comparison unit, used to calculate the first distance between each of the demarcation points and the center point of the coverage area of each preset base station, and compare it with the radius of the coverage area of the corresponding base station;

a first coverage determination unit, configured to determine that the boundary point is within the coverage area of the corresponding base station if the first distance is less than or equal to the radius of the coverage area of the corresponding base station;

The second coverage determination unit is configured to determine the road segment between the first and second demarcation points if both the first demarcation point and the second demarcation point on a road are within the coverage area of the corresponding base station In the coverage area of the corresponding base station; the first demarcation point and the second demarcation point are two adjacent demarcation points;

The third coverage determination unit is configured to, if only the third demarcation point in the third demarcation point and the fourth demarcation point on a road is within the coverage area of the corresponding base station, then according to the radius of the coverage area of the corresponding base station An intermediate point is determined between the third demarcation point and the fourth demarcation point, and the road section between the intermediate point and the third demarcation point is determined to be within the coverage area of the corresponding base station.

This embodiment of the present invention is a product embodiment corresponding to the third embodiment of the above method, and thus will not be repeated here. For details, please refer to the third embodiment above.

Please refer to FIG. 11. FIG. 11 is a schematic structural diagram of a first edge node according to Embodiment 7 of the present invention. The first edge node is an edge node currently accessed by a terminal. The first edge node 110 includes: a transceiver 111 and processor 112;

The processor 112 is configured to predict, according to the correspondence between the coverage area of the edge node and the road, the second edge node that the terminal will access next;

The transceiver 111 is configured to send the first information to the second edge node, so that the second edge node starts multi-operation when it is determined that it lacks at least part of the information required to provide services for the terminal Business data synchronization.

Optionally, the processor 112 is configured to determine the first road where the terminal is currently located according to the first location where the terminal is currently located;

The processor 112 is further configured to predict the road that the terminal will enter according to the moving direction of the terminal on the first road and the road topology;

The processor 112 is further configured to predict at least one second edge node according to the road the terminal will drive into and the corresponding relationship between the coverage area of the edge node and the road.

Optionally, the processor 112 is configured to predict, according to the moving direction of the terminal on the first road and the road topology, the road that the terminal will enter in a preset area;

The distance between any position in the preset area and the first position is less than or equal to a preset value, and the preset value is determined according to the size of the coverage area of a single edge node.

Optionally, the processor 112 is configured to predict, according to the moving direction of the terminal on the first road and the road topology structure, the road and the road segment that the terminal will enter in a preset area;

The processor 112 is further configured to predict at least one of the second edge nodes according to the corresponding relationship between the road that the terminal will enter and its road segment and the coverage area of the edge node and the road; the corresponding relationship includes: Correspondence between edge node coverage area and road segments.

This embodiment of the present invention is a product embodiment corresponding to the above-mentioned method embodiment 1, and thus will not be repeated here. For details, please refer to the above-mentioned first embodiment.

Please refer to FIG. 12. FIG. 12 is a schematic structural diagram of a second edge node according to Embodiment 8 of the present invention. The second edge node is a terminal predicted by the first edge node according to the correspondence between the coverage area of the edge node and the road. the next edge node to be accessed, the first edge node is the edge node currently accessed by the terminal, and the second edge node 120 includes: a transceiver 121 and a processor 122;

the transceiver 121, configured to receive the first information sent by the first edge node;

The processor 122 is configured to, after receiving the first information, determine whether it lacks at least part of the information required to provide services for the terminal;

The transceiver 121 is further configured to initiate multi-operator data synchronization if it is determined that it is missing.

Optionally, both the first edge node and the second edge node belong to the first operator;

The processor 122 is configured to determine a third edge node, where the third edge node belongs to the second operator, and the coverage area of the third edge node includes at least part of the coverage area of the second edge node;

The transceiver 121 is configured to perform data synchronization with the third edge node when it is determined that the third edge node can provide missing information of the information required by the second edge node to provide services for the terminal .

Optionally, the processor 122 is configured to determine the third edge node according to the correspondence between the coverage area of the edge node of the second operator and the road.

Optionally, the transceiver 121 is configured to receive missing information sent by the third edge node to provide services for the terminal, so as to provide services for the terminal; or,

The transceiver 121 is configured to send the existing information required for providing services to the terminal to the third edge node, so that the third edge node provides services for the terminal.

Optionally, the processor 122 is further configured to delete the synchronized data if the synchronized data is still not used after a preset time period; and/or, if the terminal has left the coverage of the second edge node region, the synchronized data is deleted.

This embodiment of the present invention is a product embodiment corresponding to the second embodiment of the above method, and thus will not be repeated here. For details, please refer to the second embodiment above.

Please refer to FIG. 13. FIG. 13 is a schematic structural diagram of an electronic device according to Embodiment 9 of the present invention. The electronic device 130 includes: a transceiver 131 and a processor 132;

The processor 132 is configured to determine the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station;

The processor 132 is further configured to, for each preset edge node, determine the road covered by the preset edge node according to the roads covered by all the preset base stations under the preset edge node;

The processor 132 is further configured to establish a corresponding relationship between the coverage area of the edge node and the road according to the road covered by each of the preset edge nodes;

The transceiver 131 is configured to send at least part of the content in the corresponding relationship between the coverage area of the edge node and the road to the target edge node in the preset edge nodes, where the corresponding relationship between the coverage area of the edge node and the road is At least part of the content includes the correspondence between the coverage area of the preset edge node adjacent to the target edge node and the road.

Optionally, the corresponding relationship between the edge node coverage area and the road includes the corresponding relationship between the edge node coverage area and the section of the road;

The processor 132 is configured to start from one end of the road, determine a demarcation point every preset distance, and divide the road into a plurality of road segments;

The processor 132 is further configured to calculate the first distance between each of the demarcation points and the center point of the coverage area of each preset base station, and compare it with the radius of the coverage area of the corresponding base station;

The processor 132 is further configured to determine that the demarcation point is within the coverage area of the corresponding base station if the first distance is less than or equal to the radius of the coverage area of the corresponding base station;

The processor 132 is further configured to determine the distance between the first demarcation point and the second demarcation point if both the first demarcation point and the second demarcation point on a road are within the coverage area of the corresponding base station. The road segment is within the coverage area of the corresponding base station; the first demarcation point and the second demarcation point are two adjacent demarcation points;

The processor 132 is further configured to, if only the third demarcation point is within the coverage area of the corresponding base station among the third demarcation point and the fourth demarcation point on a road, determine the location according to the radius of the coverage area of the corresponding base station. An intermediate point is determined between the third demarcation point and the fourth demarcation point, and the road section between the intermediate point and the third demarcation point is determined to be within the coverage area of the corresponding base station.

This embodiment of the present invention is a product embodiment corresponding to the third embodiment of the above method, and thus will not be repeated here. For details, please refer to the third embodiment above.

Please refer to FIG. 14. FIG. 14 is a schematic structural diagram of a first edge node according to Embodiment 10 of the present invention. The first edge node is an edge node currently accessed by a terminal, and the first edge node 140 of the terminal includes a processor 141, a memory 142, and a program stored on the memory 142 and executable on the processor 141; the processor 141 implements the following steps when executing the program:

According to the correspondence between the coverage area of the edge node and the road, predict the second edge node that the terminal will access next;

The first information is sent to the second edge node, so that the second edge node starts multi-operator data synchronization when it is determined that it lacks at least part of the information required to provide services for the terminal.

Optionally, the processor 141 may further implement the following steps when executing the program:

Predicting the second edge node that the terminal will access next according to the correspondence between the coverage area of the edge node and the road, including:

determining the first road where the terminal is currently located according to the first location where the terminal is currently located;

predicting the road the terminal will enter according to the moving direction of the terminal on the first road and the road topology;

According to the road the terminal will drive into and the correspondence between the coverage area of the edge node and the road, at least one second edge node is predicted to be obtained.

Optionally, the processor 141 may further implement the following steps when executing the program:

The predicting the road that the terminal will enter according to the moving direction of the terminal on the first road and the road topology structure includes:

predicting the road that the terminal will enter in a preset area according to the moving direction of the terminal on the first road and the road topology;

The distance between any position in the preset area and the first position is less than or equal to a preset value, and the preset value is determined according to the size of the coverage area of a single edge node.

Optionally, the processor 141 may further implement the following steps when executing the program:

The predicting, according to the moving direction of the terminal on the first road and the road topology, that the road that the terminal will enter in the preset area includes:

Predicting a road and a road segment that the terminal will enter in a preset area according to the moving direction of the terminal on the first road and the road topology;

According to the corresponding relationship between the road that the terminal will drive into and the coverage area of the edge node and the road, at least one second edge node is predicted to be obtained, including:

At least one of the second edge nodes is predicted to be obtained according to the corresponding relationship between the road that the terminal will drive into and its section and the coverage area of the edge node and the road; the corresponding relationship includes the relationship between the coverage area of the edge node and the road section. Correspondence.

The specific working process of the embodiment of the present invention is the same as that in the first embodiment of the above-mentioned method, so it is not repeated here. For details, please refer to the description of the method steps in the above-mentioned first embodiment.

Please refer to FIG. 15. FIG. 15 is a schematic structural diagram of a second edge node according to Embodiment 11 of the present invention. The second edge node 150 includes a processor 151, a memory 152, and is stored on the memory 152 and can be stored in the memory 152. The program running on the processor 151; the second edge node is the edge node that the terminal will access next, which is predicted by the first edge node according to the correspondence between the coverage area of the edge node and the road, and the first edge node is the edge node currently accessed by the terminal, and the processor 151 implements the following steps when executing the program:

receiving the first information sent by the first edge node;

After receiving the first information, determine whether it lacks at least part of the information required to provide services for the terminal;

If it is determined to be missing, start multi-operator data synchronization.

Optionally, both the first edge node and the second edge node belong to the first operator;

When the processor 151 executes the program, the following steps may also be implemented:

The starting multi-operator data synchronization includes:

determining a third edge node, the third edge node belongs to the second operator, and the coverage area of the third edge node includes at least part of the coverage area of the second edge node;

In the case that it is determined that the third edge node can provide missing information of the information required by the second edge node to provide services for the terminal, perform data synchronization with the third edge node.

Optionally, the processor 151 may further implement the following steps when executing the program:

The determining of the third edge node includes:

The third edge node is determined according to the correspondence between the coverage area of the edge node of the second operator and the road.

Optionally, the processor 151 may further implement the following steps when executing the program:

The performing data synchronization with the third edge node includes:

Receive the missing information of the information required to provide services for the terminal sent by the third edge node, so as to provide services for the terminal; or,

Sending the existing information required for providing services to the terminal to the third edge node, so that the third edge node provides services for the terminal.

Optionally, the processor 151 may further implement the following steps when executing the program:

After the multi-operator data synchronization is started, the method further includes:

If the synchronized data is still unused after the preset period of time, the synchronized data is deleted; and/or,

If the terminal has left the coverage area of the second edge node, the synchronized data is deleted.

The specific working process of the embodiment of the present invention is the same as that in the second embodiment of the above method, so it will not be repeated here. For details, please refer to the description of the method steps in the second embodiment above.

Please refer to FIG. 16. FIG. 16 is a schematic structural diagram of an electronic device according to Embodiment 12 of the present invention. The electronic device 160 includes a processor 161, a memory 162, and is stored on the memory 162 and can be accessed by the processor. The program running on 161; the processor 161 implements the following steps when executing the program:

Determine the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station;

For each preset edge node, determine the road covered by the preset edge node according to the roads covered by all the preset base stations under the preset edge node;

According to the road covered by each of the preset edge nodes, establish a corresponding relationship between the coverage area of the edge node and the road;

Send at least part of the content in the correspondence between the coverage area of the edge node and the road to the target edge node in the preset edge nodes, where at least part of the content in the correspondence between the coverage area of the edge node and the road includes the The correspondence between the coverage area of the preset edge node adjacent to the target edge node and the road.

Optionally, the processor 161 may further implement the following steps when executing the program:

The corresponding relationship between the edge node coverage area and the road includes the corresponding relationship between the edge node coverage area and the road segment;

The determining the road covered by each of the preset base stations according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station, including:

Starting from one end of the road, a dividing point is determined every preset distance, and the road is divided into multiple sections;

Calculate the first distance between each of the demarcation points and the center point of the coverage area of each preset base station, and compare it with the radius of the coverage area of the corresponding base station;

If the first distance is less than or equal to the radius of the coverage area of the corresponding base station, determine that the demarcation point is within the coverage area of the corresponding base station;

If both the first demarcation point and the second demarcation point on a road are within the coverage area of the corresponding base station, determine that the road section between the first demarcation point and the second demarcation point is within the coverage area of the corresponding base station; The first demarcation point and the second demarcation point are two adjacent demarcation points;

If only the third demarcation point is within the coverage area of the corresponding base station among the third demarcation point and the fourth demarcation point on a road, then according to the radius of the coverage area of the corresponding base station, between the third demarcation point and the third demarcation point An intermediate point is determined between the four demarcation points, and the road section between the intermediate point and the third demarcation point is determined to be within the coverage area of the corresponding base station.

The specific working process of the embodiment of the present invention is the same as that in the second embodiment of the above method, so it will not be repeated here. For details, please refer to the description of the method steps in the second embodiment above.

The thirteenth embodiment of the present invention provides a readable storage medium on which a program is stored, and when the program is executed by a processor, implements the steps in any of the data synchronization methods in the foregoing first embodiment or any one of the second embodiments The steps in the data synchronization method or implement the steps in any one of the information transmission methods in the third embodiment above. For details, please refer to the description of the method steps in the above corresponding embodiments.

The terminal in this embodiment of the present invention may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or other service data connectivity to a user, a handheld device with a wireless connection function, or a wireless modem connected to other processing equipment. A wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), and the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a mobile phone Computers, for example, may be portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network. For example, a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (Personal Digital Assistant) Assistant, referred to as PDA) and other devices. A wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, an access A terminal (Access Terminal), a user terminal (User Terminal), a user agent (User Agent), and a terminal (UserDevice or User Equipment) are not limited here.

The above-mentioned readable storage medium includes a computer-readable storage medium. Computer-readable storage media includes both persistent and non-permanent, removable and non-removable media, and storage of information can be implemented by any method or technology. Information may be computer readable instructions, data structures, modules of programs, or other data. Examples of storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM) ), Electrically Erasable Programmable Read Only Memory (EEPROM), Flash Memory or other memory technology, Compact Disc Read Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, magnetic cartridges Magnetic tape, magnetic tape storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (20)

1. A data synchronization method is applied to a first edge node, wherein the first edge node is an edge node currently accessed by a terminal, and the method comprises the following steps:

predicting a second edge node to be accessed next by the terminal according to the corresponding relation between the edge node coverage area and the road;

and sending first information to the second edge node, so that the second edge node starts multi-operator data synchronization under the condition that at least part of information required for providing the service for the terminal is determined to be lost by the second edge node.

2. The method according to claim 1, wherein the predicting a second edge node to be accessed by the terminal next according to the corresponding relation between the edge node coverage area and the road comprises:

determining a first road where the terminal is located according to a first position where the terminal is located currently;

predicting a road into which the terminal will drive according to the moving direction of the terminal on the first road and the road topological structure;

and predicting to obtain at least one second edge node according to the corresponding relation between the road to be driven into by the terminal and the road and the coverage area of the edge node.

3. The method according to claim 2, wherein predicting the road into which the terminal will enter according to the moving direction of the terminal on the first road and the road topology comprises:

predicting a road into which the terminal will drive in a preset area according to the moving direction of the terminal on the first road and the road topological structure;

wherein a distance between any position in the preset area and the first position is less than or equal to a preset value, and the preset value is determined according to the size of the single edge node coverage area.

4. The method according to claim 3, wherein the predicting the road to be entered by the terminal in the preset area according to the moving direction of the terminal on the first road and the road topology comprises:

predicting a road and a road section thereof to be driven into by the terminal in a preset area according to the moving direction of the terminal on the first road and the road topological structure;

the predicting at least one second edge node according to the corresponding relation between the road to be driven into by the terminal and the road and the corresponding relation between the edge node coverage area and the road includes:

predicting to obtain at least one second edge node according to the corresponding relation between the road to be driven into by the terminal, the road section of the road and the coverage area of the edge node and the road; the corresponding relation comprises a corresponding relation between the edge node coverage area and the road section of the road.

5. A data synchronization method is applied to a second edge node, wherein the second edge node is an edge node which is predicted by a first edge node according to a corresponding relation between an edge node coverage area and a road and is to be accessed next by a terminal, and the first edge node is an edge node which is accessed by the terminal currently, and the method comprises the following steps:

receiving first information sent by the first edge node;

after receiving the first information, determining whether the first information lacks at least part of information required for providing service for the terminal;

and if the data are determined to be missing, starting the data synchronization of the multiple operators.

6. The method of claim 5, wherein the first edge node and the second edge node both belong to a first operator;

the initiating multi-operator data synchronization comprises:

determining a third edge node, the third edge node belonging to a second operator, a coverage area of the third edge node comprising at least a partial coverage area of the second edge node;

and under the condition that the third edge node is determined to be capable of providing missing information of information required by the second edge node for providing the service for the terminal, performing data synchronization with the third edge node.

7. The method of claim 6, wherein determining the third edge node comprises:

and determining the third edge node according to the corresponding relation between the edge node coverage area of the second operator and the road.

8. The method of claim 6, wherein the synchronizing data with the third edge node comprises:

receiving missing information of information required for providing service for the terminal, which is sent by the third edge node, so as to provide service for the terminal; or,

and sending the existing information required for providing the service for the terminal to the third edge node so as to provide the service for the terminal by the third edge node.

9. The method of claim 5, wherein after initiating the multi-carrier data synchronization, further comprising:

if the synchronous data are still not used after the preset duration, deleting the synchronous data; and/or deleting the synchronized data if the terminal has left the coverage area of the second edge node.

10. An information transmission method applied to electronic equipment is characterized by comprising the following steps:

determining a road covered by each preset base station according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station;

for each preset edge node, determining a road covered by the preset edge node according to roads covered by all the preset base stations under the preset edge node;

establishing a corresponding relation between an edge node coverage area and a road according to the road covered by each preset edge node;

and sending at least part of content in the corresponding relation between the edge node coverage area and the road to a target edge node in the preset edge nodes, wherein the at least part of content in the corresponding relation between the edge node coverage area and the road comprises the corresponding relation between the coverage area of the preset edge node adjacent to the target edge node and the road.

11. The method of claim 10, wherein the edge node coverage area to road correspondence comprises edge node coverage area to road segment correspondence;

the determining the road covered by each preset base station according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station comprises the following steps:

determining a demarcation point every preset distance from one end of a road, and dividing the road into a plurality of road sections;

calculating a first distance between each demarcation point and the central point of the coverage area of each preset base station, and comparing the first distance with the radius of the coverage area of the corresponding base station;

if the first distance is smaller than or equal to the radius of the coverage area of the corresponding base station, determining that the demarcation point is in the coverage area of the corresponding base station;

if a first boundary point and a second boundary point on one road are both in the coverage area of the corresponding base station, determining that a section between the first boundary point and the second boundary point is in the coverage area of the corresponding base station; the first demarcation point and the second demarcation point are two adjacent demarcation points;

if only the third boundary point of the third boundary point and the fourth boundary point on one road is in the coverage area of the corresponding base station, determining a middle point between the third boundary point and the fourth boundary point according to the radius of the coverage area of the corresponding base station, and determining that a road section between the middle point and the third boundary point is in the coverage area of the corresponding base station.

12. A first edge node, where the first edge node is an edge node currently accessed by a terminal, the method comprising:

the prediction module is used for predicting a second edge node which is to be accessed next by the terminal according to the corresponding relation between the edge node coverage area and the road;

and the first information sending module is used for sending first information to the second edge node, so that the second edge node starts multi-operator data synchronization under the condition that at least part of information required for providing service for the terminal is determined to be lost.

13. A second edge node, where the second edge node is an edge node to be accessed next to a terminal, which is predicted by a first edge node according to a correspondence between an edge node coverage area and a road, and the first edge node is an edge node to which the terminal is currently accessed, and the second edge node includes:

a first information receiving module, configured to receive first information sent by the first edge node;

a determining module, configured to determine whether at least part of information required for providing a service for the terminal is missing after receiving the first information;

and the synchronization module is used for starting the data synchronization of the multiple operators if the data synchronization is determined to be missing.

14. A first edge node, where the first edge node is an edge node currently accessed by a terminal, the method comprising: a transceiver and a processor;

the processor is used for predicting a second edge node to be accessed next by the terminal according to the corresponding relation between the edge node coverage area and the road;

the transceiver is configured to send first information to the second edge node, so that the second edge node starts multi-operator data synchronization when determining that at least part of information required for providing a service for the terminal is missing.

15. A second edge node, where the second edge node is an edge node to be accessed next to a terminal, which is predicted by a first edge node according to a correspondence between an edge node coverage area and a road, and the first edge node is an edge node to which the terminal is currently accessed, and the second edge node includes: a transceiver and a processor;

the transceiver is used for receiving first information sent by the first edge node;

the processor is used for determining whether the processor lacks at least part of information required for providing service for the terminal after receiving the first information;

the transceiver is further configured to initiate multi-operator data synchronization if the absence is determined.

16. An electronic device, comprising: a transceiver and a processor;

the processor is used for determining the road covered by each preset base station according to the distance between the road and the preset base station and the radius of the coverage area of the preset base station;

the processor is further configured to determine, for each preset edge node, a road covered by the preset edge node according to roads covered by all the preset base stations under the preset edge node;

the processor is further configured to establish a corresponding relationship between an edge node coverage area and a road according to the road covered by each preset edge node;

the transceiver is configured to send at least part of content in a correspondence between the edge node coverage area and the road to a target edge node in the preset edge nodes, where the at least part of content in the correspondence between the edge node coverage area and the road includes a correspondence between a coverage area of a preset edge node adjacent to the target edge node and the road.

17. A first edge node, which is an edge node currently accessed by a terminal, and comprises a memory, a processor and a program stored in the memory and capable of running on the processor; characterized in that the processor implements the steps in the data synchronization method according to any one of claims 1 to 4 when executing the program.

18. A second edge node comprising a memory, a processor, and a program stored on the memory and executable on the processor; the method is characterized in that the second edge node is an edge node which is predicted by a first edge node according to a corresponding relation between an edge node coverage area and a road and is to be accessed next by a terminal, the first edge node is an edge node which is accessed currently by the terminal, and the processor implements the steps in the data synchronization method according to any one of claims 5 to 9 when executing the program.

19. An electronic device comprising a memory, a processor, and a program stored on the memory and executable on the processor; characterized in that the processor implements the steps in the information transmission method according to claim 10 or 11 when executing the program.

20. A readable storage medium, on which a program is stored, which program, when being executed by a processor, carries out the steps of the data synchronization method according to any one of claims 1 to 4 or the steps of the data synchronization method according to any one of claims 5 to 9 or the steps of the information transmission method according to claim 10 or 11.

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