WO2019165876A1

WO2019165876A1 - Method and device for establishing network connection

Info

Publication number: WO2019165876A1
Application number: PCT/CN2019/073822
Authority: WO
Inventors: 魏海涛
Original assignee: 华为技术有限公司
Priority date: 2018-02-27
Filing date: 2019-01-30
Publication date: 2019-09-06
Also published as: CN110198516B; CN110198516A

Abstract

Provided are a method and device for establishing a network connection, which fall within the technical field of vehicle networking. The method comprises: sending to a control server a first service query request comprising location information and a service identifier of a user entity, so that the control server queries a first application server address according to the location information and the service identifier of the user entity and sends the first application server address to the user entity; and receiving the first application server address, and sending a service acquisition request to the first application server corresponding to the first application server address, wherein the service acquisition request comprises a user entity identifier and a service identifier, and the service acquisition request is used for the first application server to provide a service corresponding to the service identifier to the user entity corresponding to the user entity identifier. The application server establishing a network connection with a user entity in the present disclosure is selected by the control server according to the location information and the service identifier. The application server can provide a service quickly, and thus the timeliness is better.

Description

Method and device for establishing network connection

This application claims the priority of the Chinese Patent Application filed on February 27, 2018, the Chinese National Intellectual Property Office, the application number is 201810161101.5, and the invention is entitled "Method and Apparatus for Establishing Network Connections", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present disclosure relates to the field of vehicle networking technologies, and in particular, to a method and an apparatus for establishing a network connection.

Background technique

Vehicle to Everything (V2X) means that the vehicle and everything are connected through a car-mounted ad hoc network and a variety of heterogeneous networks. V2X interconnection methods include Vehicle to Vehicle (V2V), Vehicle to Infrastructure (V2I), Vehicle to Pedestrians (V2P), Vehicle to Cloud (V2C) Wait. Based on the V2X technology, the V2X User Entity (UE) can obtain the services provided by the V2X AS by establishing a network connection with the V2X Application Server (AS), for example, traffic alert service, driving data sharing service, etc. Services play an important role in traffic safety, traffic efficiency, energy conservation and emission reduction, and have become an integral part of modern transportation.

Currently, the V2X Phase 2 specification (TS 23.285) issued by the 3rd Generation Partnership Project (3GPP) provides the following recommendations for establishing a network connection between a V2X UE and a V2X AS: V2X UE adopts the Anycast method. The network sends a service acquisition request including a service identifier. When receiving the service acquisition request, the routing device in the network determines, according to the service identifier, multiple V2X ASs capable of providing the service in the network, and measures the transmission of the service acquisition request from the current node to the current node. The number of nodes per V2X AS route, which in turn sends a service request to the V2X AS with the least number of route nodes to establish a network connection between the V2X UE and the V2X AS.

Due to the high timeliness requirement of the V2X service, the V2X AS selected by the Anycast method is only the V2X AS with the least number of path nodes. In fact, the number of path nodes does not reflect the distance between the V2X UE and the V2X AS, so it is based on The V2X AS selected by Anycast has poor timeliness and cannot meet the V2X business requirements.

Summary of the invention

In order to solve the problems of the related art, the embodiments of the present disclosure provide a method and an apparatus for establishing a network connection. The technical solution is as follows:

A first aspect provides a method for establishing a network connection, where a user entity sends a first service query request to a control server, where the first service query request includes location information and a service identifier of the user entity, and when the first service query request is received The control server queries the first application server address according to the location information and the service identifier of the user entity, and sends the first application server address to the user entity. The user entity receives the first application server address sent by the control server, and sends a service acquisition request to the first application server corresponding to the first application server address, where the service acquisition request includes the user entity identifier and the service identifier, and when the service acquisition request is received, The first application server provides a service corresponding to the service identifier to the user entity corresponding to the user entity.

According to the solution shown in the embodiment of the present disclosure, the control server selects an application server that can quickly provide a service for the user entity according to the location information of the user entity and the service identifier of the required service, thereby improving the timeliness of the service, thereby satisfying the solution. V2X business needs.

In a possible design, the first application server address includes an edge application server domain name and a port number. In this case, before the user entity sends a service acquisition request to the first application server corresponding to the first application server address, The domain name system sends a domain name query request, and the domain name query request includes an edge application server domain name. When receiving the domain name query request, the domain name system queries the IP (Internet Protocol Address) address of the edge application server corresponding to the edge application server domain name. And send the IP address of the edge application server to the user entity. Based on the received IP address of the edge server and the port number of the edge server, the user entity sends a service acquisition request to the edge application server corresponding to the IP address and port number of the edge application server.

The solution shown in the embodiment of the present disclosure makes the service initiation process more specific by acquiring the IP address of the edge application server and initiating a service acquisition request based on the acquired address.

In another possible design, when the first application server address includes the IP address of the cloud application server, the user entity may send the service to the cloud application server corresponding to the IP address of the cloud application server according to the IP address of the cloud application server. request.

The solution shown in the embodiment of the present disclosure makes the service initiation process more specific by acquiring the IP address of the cloud application server and initiating a service acquisition request based on the acquired address.

In another possible design, when the service corresponding to the service identifier is obtained, the user entity may send a first notification message to the control server, where the first notification message includes a user entity identifier, a service identifier, and a first application server address. The first notification message is used to control the server to store a correspondence between the user entity identifier, the service identifier, and the first application server address.

The solution shown in the embodiment of the present disclosure can enable the control server to store the user entity identifier, the service identifier, and the first application server address by sending the first notification message to the control server, so as to perform subsequent disaster recovery according to the current connection relationship. Data synchronization process.

In another possible design, when the control server detects that the service corresponding to the service identifier provided by the first application server is unavailable, the second application server address capable of providing the available service is obtained, and the service address change message is sent to the user entity. The user entity receives the service address change message sent by the control server, and establishes a network connection with the second application server.

The solution shown in the embodiment of the present disclosure can switch to other application servers capable of providing available services when the service provided by the first application server is unavailable, thereby ensuring continuity of services and improving service quality.

In another possible design, after the user entity establishes a network connection with the control server, the user entity further sends a second notification message to the control server, where the second notification message is used to control the server to store the user entity identifier, the service identifier, and The correspondence between the second application server addresses.

The solution shown in the embodiment of the present disclosure can enable the control server to store the correspondence between the user entity, the service identifier, and the second application server address by sending the second notification message to the control server, so that according to the stored correspondence relationship, The service is monitored.

In another possible design, when detecting the change of the location information, the user entity sends a second service query request to the control server, where the second service query request includes updated location information and a service identifier of the user entity, the second service The query request is used to control the server to query the third application server address, trigger the third application server corresponding to the first application server and the third application server address to perform data synchronization, and send the third application server address to the user entity, when receiving the first The third application server address, the user entity establishes a network connection with the third application server corresponding to the third application server address. In the solution shown by the embodiment of the present disclosure, when the user entity detects the change of its own location, the data is synchronized between the two application servers before and after the location change, and a new network connection is established to ensure the continuity of the service.

In another possible design, the user entity sends a third notification message to the control server, where the third notification message is used to control the server to store the correspondence between the user entity identifier, the service identifier, and the third application server address.

The solution shown in the embodiment of the present disclosure can enable the control server to store the correspondence between the user entity, the service identifier, and the third application server address by sending the second notification message to the control server, so that according to the stored correspondence relationship, The service is monitored.

A second aspect provides a method for establishing a network connection, the method comprising: controlling, by a server, a first service query request of a user entity, where the first service query request includes location information and a service identifier of the user entity, and the control server is configured according to the user. The location information and the service identifier of the entity, query the first application server address, and send the first application server address to the user entity. When receiving the first application server address, the user entity sends the first application corresponding to the first application server address. The server sends a service acquisition request, which includes a user entity identifier, a service identifier, and the like.

In a possible design, the first service query request further includes a mobile edge computing server address of the mobile edge computing server located upstream of the user entity, and when receiving the first service query request, the control server according to the user location information, moving the edge Calculate the server address and service identifier, query the domain name and port number of the edge application server, and then use the edge application server domain name and port number as the first application server address.

The solution shown in the embodiment of the present disclosure provides a method for querying a first application server address.

In another possible design, the control server queries the IP address of the cloud application server according to the location information and the service identifier of the user entity, and then uses the IP address of the cloud application server as the first application server address.

The solution shown in the embodiment of the present disclosure provides another method of querying the address of the first application server.

In another possible design, after the user entity establishes a network connection with the first application server and obtains the service provided by the first application server, the user entity further sends a first notification message to the control server, where the first notification message is sent. The user entity identifier, the service identifier, and the first application server address are included. When receiving the first notification message sent by the user entity, the control server stores the correspondence between the user entity identifier, the service identifier, and the first application server address.

In the solution shown in the embodiment of the present disclosure, the control server can monitor the service according to the stored correspondence relationship by storing the correspondence between the user entity identifier, the service identifier, and the first application server address.

In another possible design, when it is detected that the service corresponding to the service identifier provided by the first application server is unavailable, the control server acquires a second application server address capable of providing an available service, and sends a service address change message to the user entity. The service address change message includes a second application server address, where the service address change message is used by the user entity to establish a network connection with the second application server corresponding to the second application server address.

In another possible design, the control server may query, according to the service identifier, whether there are other edge service addresses in the service status table that can provide available services, where the service status table stores the service identifier, the application server address, and the service available status. The correspondence between the two, and then the second application server address is obtained according to the presence or absence. Specifically, if present, the control server uses the other edge service address as the second application server address; if not, the control server uses the IP address of the cloud application server as the second application server address.

The solution shown in the embodiment of the present disclosure selects a second application server that can quickly provide available services to the user entity according to the service available state in the service status table, and shortens the service providing time as much as possible while ensuring the availability of the service. .

In another possible design, the control server further receives a status report sent by the mobile edge computing server and the cloud application server, the status report includes each edge application server address, etc., and the control server maintains the service according to the received status report. Status table.

In the solution shown by the embodiment of the present disclosure, the control server maintains the service available state of the service provided by each edge application server in the service status table by receiving the status report, so that the application entity capable of providing the available service can be selected for the user entity.

In another possible design, the control server receives the second notification message sent by the user entity, where the second notification message includes the user entity identifier, the service identifier, and the second application server address, thereby storing the user entity identifier, the service identifier, and the The correspondence between the two application server addresses.

In another possible design, when the user entity detects the change of the location information, the second service query request may be sent to the control server, where the second service query request includes the updated location information and the service identifier of the user entity, when received a second service query request of the user entity, the user entity acquiring the third application server address according to the updated location information and the service identifier of the user entity, and sending a data synchronization request to the first application server, where the data synchronization request includes the user entity identifier and the service And the third application server address, the data synchronization request is used by the first application server to perform data synchronization with the third application server corresponding to the third application server address, and send a data synchronization response to the control server after the data synchronization is completed. When receiving the data synchronization response, the control server sends a third application server address to the user entity, the third service address being used by the user entity to establish a network connection with the third application server.

In another possible design, the control server receives a third notification message sent by the user entity, where the third notification message includes a user entity identifier, a service identifier, and a third application server address. When the third notification message is received, the user entity The correspondence between the user entity identifier, the service identifier, and the third application server address is stored.

A third aspect provides a method for establishing a network connection, the method comprising: receiving, by a mobile edge computing server, a first service query request sent by a user entity, where the first service query request includes location information and a service identifier of the user entity, and then Adding the mobile edge computing server address to the first service query request, and transmitting a first service query request including the mobile edge computing server address to the control server, the first service query request including the mobile edge computing server address for controlling The server queries the edge application server domain name and port number according to the location information of the user entity, the service identifier, and the mobile edge calculation server address, and sends the edge application server domain name and port number to the user entity, where the edge application server domain name and port number are used. The user entity establishes a network connection with the edge application server.

The solution shown in the embodiment of the present disclosure, the mobile edge computing server enables the control server to calculate the server according to the location information of the user entity, the service identifier of the required service, and the mobile edge by adding the own address to the first service query request of the user entity. The address selects the edge application server that can provide services for the user entity quickly, thus ensuring the timeliness of the service.

In a possible implementation, the mobile edge computing server receives a service acquisition request sent by the user entity, where the service acquisition request includes a user entity identifier and a service identifier, and then the mobile edge computing server sends the service acquisition request to the edge application server. The edge application server identifies the corresponding service entity to the user entity to provide a service corresponding to the service identifier.

In another possible implementation manner, the mobile edge computing server may receive a status report sent by each edge application server, where the status report includes an edge application server address, etc., and then send a status report to the control server, where the status report is used for control. The server maintains a service status table in which a correspondence between a service identifier, an application server address, and an available state is stored.

In a fourth aspect, a user entity is provided, the user entity having a function of a user entity in a method for establishing the network connection. The functions may be implemented by hardware or by corresponding software implementation by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the structure of the user entity includes a processing unit and a communication unit configured to support the user entity in performing the corresponding functions of the above methods. The communication unit is for supporting communication between a user entity and other devices. The user entity may also include a storage unit for coupling with the processing unit that stores program instructions and data necessary for the user entity. As an example, the processing unit can be a processor, the communication unit can be a transceiver, and the storage unit can be a memory.

In another possible design, the structure of the user entity includes a sending unit, a receiving unit, and a connecting unit, and the units can perform corresponding functions in the foregoing method for establishing a network connection. For details, refer to the detailed description in the method embodiment. I will not repeat them here.

In a fifth aspect, there is provided a control server having a function of controlling a server in a method of establishing the network connection described above. The functions may be implemented by hardware or by corresponding software implementation by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the structure of the control server includes a processing unit and a communication unit configured to support the control server to perform the corresponding functions in the above methods. The communication unit is configured to support communication between the control server and other devices. The control server may also include a storage unit for coupling with the processing unit that holds program instructions and data necessary to control the server. As an example, the processing unit can be a processor, the communication unit can be a transceiver, and the storage unit can be a memory.

In another possible design, the structure of the control server includes a receiving unit, a query unit, a sending unit, a storage unit, an obtaining unit, and a maintenance unit, and the units may perform corresponding functions in the example of establishing the network connection, specifically Refer to the detailed description in the method embodiments, and no further details are provided herein.

In a sixth aspect, a mobile edge computing server is provided, the mobile edge computing server having the function of implementing a mobile edge computing server in the method for establishing the network connection. The functions may be implemented by hardware or by corresponding software implementation by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the structure of the mobile edge computing server includes a processing unit and a communication unit configured to support the mobile edge computing server to perform the corresponding functions in the above methods. The communication unit is for supporting communication between the mobile edge computing server and other devices. The mobile edge computing server can also include a storage unit for coupling with the processing unit that holds program instructions and data necessary for the mobile edge computing server. As an example, the processing unit can be a processor, the communication unit can be a transceiver, and the storage unit can be a memory.

In another possible design, the structure of the mobile edge computing server includes a receiving unit, an address adding unit, and a sending unit, and the units may perform corresponding functions in the foregoing method for establishing a network connection. For details, refer to the method embodiment. Detailed description will not be repeated here.

According to a seventh aspect, a network device is provided, where the network device includes a memory, a processor, a transceiver, and a bus, wherein the memory, the processor, and the transceiver are connected to each other through a bus, and the memory is used to store computer instructions when the network device is running. The processor runs computer instructions to cause the network device to perform the method of establishing the network connection described in the first aspect.

According to an eighth aspect, a network device is provided, where the network device includes a memory, a processor, a transceiver, and a bus, wherein the memory, the processor, and the transceiver are connected to each other through a bus, and the memory is used to store computer instructions when the network device is running. The processor runs computer instructions to cause the network device to perform the method of establishing the network connection described in the second aspect.

A ninth aspect provides a network device, including a memory, a processor, a transceiver, and a bus, wherein the memory, the processor, and the transceiver are connected to each other through a bus, and the memory is configured to store computer instructions when the network device operates The processor runs computer instructions to cause the network device to perform the method of establishing the network connection described in the third aspect.

The tenth aspect provides a system for establishing a network connection, where the system for establishing a network connection includes any network device: the user entity according to the fourth aspect, the control server according to the fifth aspect, and the sixth aspect Mobile edge computing server. In another possible design, other devices that interact with a user entity, a control server, or a mobile edge computing server in the solution provided by the embodiments of the present disclosure may also be included.

In an eleventh aspect, a computer readable storage medium for storing computer software instructions for use by the user entity described above, comprising a program for performing the first aspect described above.

According to a twelfth aspect, there is provided a computer readable storage medium for storing computer software instructions for use by the above control server, comprising a program for performing the second aspect described above.

A thirteenth aspect, a computer readable storage medium for storing computer software instructions for use by the mobile edge computing server described above, comprising a program for performing the third aspect described above.

In a fourteenth aspect, a computer program product comprising instructions, when run on a computer device, causes the computer to perform the method of establishing a network connection as described in the above aspects.

The beneficial effects brought by the technical solutions provided by the embodiments of the present disclosure are:

The application server that establishes a network connection with the user entity in the present disclosure is selected by the control server according to the location information and the service identifier, and the application server can quickly provide the service thereto, and thus the timeliness is better.

DRAWINGS

FIG. 1 is a structural diagram of a system for establishing a network connection according to an embodiment of the present disclosure;

2A is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

2B is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

3 is a flowchart of a method for establishing a network connection according to an embodiment of the present disclosure;

4 is a schematic diagram of a process of establishing a network connection according to an embodiment of the present disclosure;

FIG. 5 is a flowchart of a method for establishing a network connection according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a process of establishing a network connection according to an embodiment of the present disclosure;

FIG. 7 is a flowchart of a method for establishing a network connection according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a process of establishing a network connection according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a user entity according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a control server according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a mobile edge computing server according to an embodiment of the present disclosure.

Detailed ways

The embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

Before describing the embodiments of the present disclosure in detail, a plurality of network devices related to the present disclosure will be described.

Application server: In V2X scenario, it is represented by V2X AS, including Edge V2X AS and Cloud V2X AS. It is mainly used to provide V2X services related to the application layer, and V2X service heartbeat keep-alive with V2X CF.

User entity: In the V2X scenario, it is represented by a V2X UE and is mainly used to obtain services from the V2X AS.

Control server: In the V2X scenario, it is represented by V2X CF. It is mainly used to provide network layer-related services and dynamically select V2X AS for V2X UEs.

Mobile Edge Computing Server: In the V2X scenario, represented by the MEC, located between the base station and the packet core network and closer to the base station. The regional deployment of the MEC is mainly used to add the MEC address to the V2X AS query request during the V2X service provisioning process, and report the heartbeat information of the Edge V2X AS to the V2X CF to maintain the heartbeat between the Edge V2X AS and the V2X CF.

FIG. 1 shows an architectural diagram of a network connection establishment system including a Cloud V2X AS, multiple Edge V2X ASs, MECs, multiple base stations, multiple V2X UEs, and V2X CFs.

The connection relationship of each network device is as follows:

1. The Cloud V2X AS is deployed on the IoT Platform. The Edge V2X AS is deployed on the MEC Platform. Each MEC Platform is deployed with multiple Edge V2X ASs that can provide the same V2X service. Cloud V2X AS and Edge V2X AS and V2X CF pass. The established network connection forms a control plane and can receive various commands sent by the V2X CF;

2. The V2X UE and the V2X CF form a control plane through the established network connection, and can receive various commands sent by the 2X CF;

3. The V2X UE and the Cloud V2X AS and the Edge V2X AS form a data plane through the established network connection, and the V2X service can be obtained from the Cloud V2X AS or the Edge V2X AS;

4. Cloud V2X AS and Edge V2X AS form a data plane through the established network connection. In this data plane, data exchange and data synchronization can be performed between Cloud V2X AS and Edge V2X AS, Edge V2X AS and Edge V2X AS. Data interaction and data synchronization are also possible;

5. The base station establishes a network connection with the V2X UE and the Cloud V2X AS or the Edge V2X AS, and provides the V2X service for the V2X UE.

The functions implemented by each network device are as follows:

1. In the scenario where the MEC is deployed, the V2X UE can access the Edge V2X AS through the MEC Platform, and obtain the required V2X service from the Edge V2X AS. In the scenario without MEC coverage, the V2X UE can directly access the Cloud. V2X AS, and then obtain the required V2X service from Cloud V2X AS;

2. The same MEC Platform can support multiple V2X services and can support multiple Edge V2X ASs;

3. Considering the Edge V2X AS disaster recovery, the same MEC Platform deploys multiple Edge V2X AS instances to the same V2X service.

4. When multiple Edge V2X ASs on the MEC Platform cannot provide V2X services, V2X services can be provided by Cloud V2X AS.

5. The V2X CF may select an appropriate V2X AS based on the location information, the MEC address, and the V2X service identifier of the V2X UE;

6. The V2X CF maintains the heartbeat through the MEC and the V2X AS, and maintains the available states of the V2X AS and V2X services.

7. The V2X UE can perform V2X communication with the Edge V2X AS or the Cloud V2X AS;

8. Data synchronization is performed when the V2X AS is switched.

2A is a schematic structural diagram of a network device according to an embodiment of the present disclosure. The network device 200 includes a storage unit 201, a processing unit 202, and a communication unit 203, where the storage unit 201 is configured to store program codes and data of the network device 200. . The network device can be a user entity, a control server, and a mobile edge computing server.

When the network device 200 is a user entity, the network device 200 is configured to implement the function of the user entity in the method for establishing a network connection in FIG. 3 or FIG. 5 or FIG. The processing unit 202 is configured to control and manage the actions of the user entity, and the communication unit 203 is configured to support the user entity to communicate with other network entities.

When the network device 200 is a control server, the network device 200 is used to implement the function of the control server in the method for establishing the network connection in FIG. 3 or FIG. 5 or FIG. The processing unit 202 is configured to control and manage the actions of the control server, and the communication unit 203 is configured to support the control server to communicate with other network entities.

When the network device 200 is a mobile edge computing server, the network device 200 is configured to implement the functions of the mobile edge computing server in the method for establishing a network connection in FIG. 3 or FIG. 5 or FIG. The processing unit 202 is configured to control and manage the actions of the mobile edge computing server, and the communication unit 203 is configured to support the mobile edge computing server to communicate with other network entities.

The processing unit 202 may be a processor or a controller, such as a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication unit 203 can be a transceiver. The storage unit 201 can be a memory.

When the storage unit 201 is a memory, the processing unit 202 is a processor, and the communication unit 203 is a transceiver, the network device involved in the embodiment of the present disclosure may be the network device shown in FIG. 2B.

Referring to FIG. 2B, the network device includes a memory 201, a processor 202, a transceiver 203, and a bus 204. The memory 201, the processor 202, and the transceiver 203 are connected to each other through a bus 204. The memory 201 is configured to store computer instructions. When the network device is running, the processor 202 runs computer instructions, so that the network device implements FIG. 3 or FIG. 5 or The method for establishing a network connection in 7; the bus 204 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 2B, but it does not mean that there is only one bus or one type of bus.

Based on the architecture diagram of the network connection establishment system shown in FIG. 1 , the embodiment of the present disclosure provides a method for establishing a network connection. Referring to FIG. 3 , the method flow provided by the embodiment of the present disclosure includes:

301. A user entity sends a first service query request to a control server.

When the user entity needs to obtain the service due to the business requirement, the user entity may send the first service query request to the control server. The first service query request includes the location information and the service identifier of the user entity, and the location information of the user entity includes a TAI (Tracking Area Identity), a cell identifier, a Cell-ID, or an E-SMLC (Evolved Serving Mobile Location). Center, the location of the evolved service mobile location center), location information, etc.

In an embodiment of the present disclosure, if the uplink deployment of the user entity has a mobile edge computing server, the mobile edge computing server may intercept the first service query request and add the mobile edge computing server address to the first service query request. And transmitting a first service query request including the mobile edge computing server address to the control server.

In another embodiment of the present disclosure, if the uplink of the user entity is not deployed with a mobile edge computing server, the first service query request will be sent directly to the control server.

302. When receiving the first service query request of the user entity, the control server queries the first application server address according to the location information and the service identifier of the user entity, and sends the first application server address to the user entity.

Whether the mobile edge computing server is deployed for the user entity uplink can be divided into two cases:

In the first case, the user entity uplink deployment has a mobile edge computing server.

In this case, after receiving the first service query request including the mobile edge service address, the control server queries the corresponding edge application server domain name and port number according to the location information of the user entity, the mobile edge calculation server address, and the service identifier. And sending the edge application server domain name and port number as the first application server address to the user entity. During the actual query, the control server may also query the corresponding edge application server domain name and port number according to the mobile edge calculation server address and service identifier. For example, if the MEC address is obtained as the IP address 1 and the service identifier is the V2X service identifier 2 from the first service query request, the domain name of the corresponding edge application server is obtained as the domain name 1 and the port number is the port number. 2.

Table 1

MEC地址MEC address	V2X服务标识V2X service identifier	V2X AS域名/IP地址V2X AS domain name/IP address	V2X AS端口号V2X AS port number

IP地址1IP address 1	V2X服务标识1 V2X Service ID 1	域名1/IP地址1 Domain Name 1/IP Address 1	端口号1 Port number 1

IP地址1 IP address 1	V2X服务标识2 V2X Service ID 2	域名1/IP地址1 Domain Name 1/IP Address 1	端口号2 Port number 2
IP地址2 IP address 2	V2X服务标识1 V2X Service ID 1	域名2/IP地址2 Domain Name 2/IP Address 2	端口号1 Port number 1

The edge application server domain name and port number may be intercepted by the mobile edge computing server during transmission from the control server to the user entity and then sent by the mobile edge computing server to the user entity. When receiving the domain name and the port number of the edge application server, the user entity needs to send a domain name query request to the domain name system, where the domain name query request includes the domain name of the edge application server, and the domain name system queries the IP address of the edge application server corresponding to the domain name of the edge application server. The IP address of the edge application server is then sent to the user entity. The user entity sends a service acquisition request to the edge application server corresponding to the IP address and the port number of the edge application server based on the received IP address and port number of the edge server.

In the second case, the mobile edge computing server is not deployed on the user entity uplink.

In this case, the control server may query the IP address of the cloud application server according to the location information and the service identifier of the user entity, and use the IP address of the cloud application server as the first application server address, and then correspond to the IP address of the cloud application server. The cloud application server sends a service acquisition request.

303. When receiving the first application server address, the user entity sends a service acquisition request to the first application server corresponding to the first application server address.

For the scenario where the user entity is deployed with the mobile edge computing server, when receiving the IP address and port number of the edge application server, the user entity may send a service acquisition request to the edge application server corresponding to the IP address and port number of the edge application server. The service acquisition request includes a user entity identifier, a service identifier, and the like. In the process, if the mobile edge computing server has the offload capability, the mobile edge computing server may directly send the service acquisition request to the edge application server; if the mobile edge computing server does not have the offload capability, the mobile edge computing server may The service acquisition request is sent to the packet core network, and is sent by the packet core network to the public network, and then sent to the edge application server via the public network, and the edge application server provides the user entity with the service identifier corresponding service. For example, the first application server address is IP address 1, port number 1, and the mobile edge computing server learns that the edge application server has the offload capability by querying the table 2, and the mobile edge computing server can directly send the service acquisition request to the edge application server. .

Table 2

IP地址/端口号IP address/port number	是否具有分流能力Whether it has shunting ability

IP地址1/端口号1IP address 1 / port number 1	是 Yes

IP地址2/端口号2IP address 2 / port number 2	否no

For a scenario in which the user entity does not deploy the mobile edge computing server, when receiving the cloud application server IP address, the user entity may send a service acquisition request to the cloud application server corresponding to the cloud application server IP address, and the service acquisition request is sent to the user entity via the user entity. The base station is then sent by the base station to the packet core network, and then sent by the packet core network to the public network, and sent to the cloud application server via the public network, and then the cloud application server provides the user entity with the service identifier corresponding service.

In another implementation of the present disclosure, after the user entity successfully communicates with the first application server (the cloud application server or the edge application server), the user entity also sends a first notification message to the control server, the first notification message including the user The entity identifier, the service identifier, and the first application server address, etc., when receiving the first notification message sent by the user entity, the control server stores the correspondence between the user entity identifier, the service identifier, and the first application server address, and provides the user with the corresponding relationship. The entity sends an acknowledgement message, and the correspondence can be used to monitor the service of the user entity subsequently.

FIG. 4 shows a process of establishing a network connection provided by an embodiment of the present disclosure in a V2X scenario, and the process is as follows:

The V2X UE sends a V2X AS query request to the V2X CF. The V2X AS query request includes the location information of the V2X UE and the V2X Service identifier. If the V2X UE is deployed with the MEC, the step 2 is performed. Step 10;

2. In the scenario where the V2X UE is deployed with the MEC in the uplink, the MEC intercepts the V2X AS query request, adds the MEC IP address to the V2X AS query request, and sends the V2X AS query request to the V2X CF.

3. The V2X CF queries the domain name and port number of the Edge V2X AS, and sends the domain name and port number of the Edge V2X AS to the MEC.

4. The MEC sends the domain name and port number of the Edge V2X AS to the V2X UE.

5. The V2X UE sends a domain name query request to the DNS, where the domain name query request includes the domain name of the Edge V2X AS;

6. The DNS queries the IP address of the Edge V2X AS corresponding to the domain name of the Edge V2X AS, and sends the IP address of the Edge V2X AS to the V2X UE;

7. If there are two V2X services required by the V2X UE, namely V2X Service1 and V2X Service2, after steps 1 to 3 above, it is determined that V2X Service1 is provided by Edge V2X AS, and V2X Service2 is provided by Cloud V2X AS, then V2X can be sent to Edge. The V2X AS sends a service acquisition request carrying the V2X Service1 identifier, and sends a service acquisition request carrying the V2X Service2 identifier to the Cloud V2X AS.

8. The MEC intercepts the service acquisition request sent to the Edge V2X AS. If the MEC has the offload capability, the MEC sends the service acquisition request to the Edge V2X AS; if the MEC does not have the offload capability, the MEC sends the service acquisition request to the packet. The core network is sent by the packet core network to the public network and sent to the Edge V2X AS via the public network;

9. The MEC does not intercept the service request sent to the Cloud V2X AS, but sends it directly to the packet core network, which is sent by the packet core network to the public network and sent to the Edge V2X AS via the public network.

10. In the scenario where the V2X UE is not deployed with the MEC, the V2X UE sends a V2X AS acquisition request to the Cloud V2X AS, and after establishing a network connection with the Cloud V2X AS, sends a service acquisition request to the Cloud V2X AS by the Cloud V2X AS. Serve them;

After the V2X UE successfully communicates with the Edge V2X AS or the Cloud V2X AS, the V2X UE sends a notification message to the V2X CF, where the notification message includes a correspondence between the V2X UE identifier, the V2X Service identifier, and the V2X AS address.

12. After the V2X CF stores the correspondence between the V2X UE identifier, the V2X Service identifier, and the V2X AS address, the V2X CF sends an acknowledgement message to the V2X UE.

The method provided by the embodiment of the present disclosure, when the user entity initiates the service query request, adds the location information of the user to the service query request, so that the control server can query the user entity for the appropriate application according to the location information of the user entity. The server is able to quickly obtain the required services, improving the speed of service acquisition and quality of service.

Based on the architecture diagram of the network connection establishment system shown in FIG. 1 , the embodiment of the present disclosure provides a method for establishing a network connection. Referring to FIG. 5 , the method flow provided by the embodiment of the present disclosure includes:

501. When detecting that the service corresponding to the service identifier provided by the first application server is unavailable, the control server acquires a second application server address capable of providing an available service, and sends a service address change message to the user entity.

In the embodiment of the present disclosure, the control server maintains a service status table, where the service status table may store a correspondence between the service identifier, the application server address, and the service available status, and may also store the user entity identifier and the user entity. The correspondence between the location information and the above information. The specific form of the service status table can be seen in Table 3.

table 3

The service status table can be maintained in the following two ways:

In the first mode, the application server periodically sends a status report to the control server to maintain the heartbeat, and the control server determines the service availability status of all services provided by the application server according to the receipt of the status report. Specifically, for the edge application server, the edge application server periodically sends a status report for maintaining the heartbeat to the mobile edge computing server, where the status report includes the edge application server address, which is sent by the mobile edge computing server to the control server, if the control server does not receive the The status report determines that all services provided by the edge application server corresponding to the edge application server address are unavailable, and then the service availability status of all the services provided by the edge application server in the service status table is changed to unavailable; for the cloud application The server, the cloud application server may periodically send a status report for maintaining the heartbeat to the control server, and if the control server does not receive the status report, determine that all services provided by the cloud application server are unavailable, and then provide all the services provided by the cloud application server. The service changed the status of the service in the service status table to unavailable.

In a second manner, the application server periodically sends a status report for maintaining a specific service heartbeat to the control server, and the control server determines, according to the receipt of the status report, the service availability status of the specific service provided by the application server. Specifically, for the edge application server, the edge application server periodically sends a status report for maintaining a specific service heartbeat to the mobile edge computing server, where the status report includes an edge application server address and a specific service identifier, which is sent to the control by the mobile edge computing server. The server, if the control server does not receive the status report, determines that the specific service provided by the edge application server is unavailable, thereby changing the available status of the specific service provided by the edge application server in the service status table to unavailable; for the cloud application server The cloud application server may periodically send a status report for maintaining a specific service heartbeat to the control server. If the control server does not receive the status report, it determines that the specific service provided by the cloud application server is unavailable, and then provides the cloud application server. The available status of a particular service in the service status table changes to unavailable.

Based on the maintained status report, when detecting that the service corresponding to the service identifier provided by the first application server is unavailable, the control server acquires a second application server address capable of providing an available service, and further sends a service address change message to the user entity, the service The address change message includes a second application server address and the like.

The method by which the control server obtains the second application server address that can provide the available services is as follows:

In the first step, the control server queries, according to the service identifier, whether there are other edge application service addresses in the service status table that can provide available services;

In the second step, if it exists, the control server uses the other edge service address as the second application server address; if not, the IP address of the cloud application server is used as the second application server address.

502. When receiving a service address change message sent by the control server, the user entity establishes a network connection with the second application server.

When receiving the service address change message sent by the control server, the user entity establishes a network connection with the second application server by sending a service acquisition request to the second application server corresponding to the second application server address. After the user entity successfully communicates with the second application server, the user entity further sends a second notification message to the control server, where the second notification message includes the user entity identifier, the service identifier, and the second application server address, when receiving the second When the notification message is sent, the control server stores the correspondence between the user entity identifier, the service identifier, and the second application server address, and returns an acknowledgement message to the user entity, where the correspondence relationship can be used to monitor the service of the user entity.

FIG. 6 shows a process of establishing a network connection provided by an embodiment of the present disclosure in a V2X scenario, and the process is as follows:

1. In the V2X scenario, Edge V2X AS1 periodically sends a status report to the MEC. The status report includes the Edge V2X AS1 address. The Edge V2X AS2 can also periodically send status reports to the MEC. The status report includes Edge V2X AS2. Address, etc.; if receiving a status report sent by Edge V2X AS1, the MEC will send the received status report to the V2X CF, the V2X CF receives the status report forwarded by the MEC, and provides the service provided by the Edge V2X AS1 in the service status table. Set to the available state. If the V2X CF does not receive the status report of the Edge V2X AS1 within the preset time period, the service provided by the Edge V2X AS1 is set to the unavailable state in the service status table; the MEC maintains the Edge V2X AS2 provided. The service status of the service is the same as that of the maintenance process of the service provided by the Edge V2X AS1. For details, refer to the maintenance process of the Edge V2X AS1.

3. When the V2X CF detects that the V2X service provided by the Edge V2X AS1 to the V2X UE is unavailable, the V2X CF can obtain the Edge V2X AS2 address that can provide the V2X available service according to the service status table, and send the Edge V2X AS2 address to the V2X UE. ;

4. When receiving the Edge V2X AS2 address, the V2X UE establishes a network connection with the Edge V2X AS2;

After the V2X UE successfully communicates with the Edge V2X AS2, the V2X UE sends a notification message to the V2X CF. When receiving the notification message, the V2X CF stores the correspondence between the V2X UE identifier, the service identifier, and the Edge V2X AS2 address, and The V2X UE sends a confirmation message.

In the process of switching from the first application server to the second application server, the data synchronization problem is also involved between the first application server and the second application server. For the specific data synchronization process, refer to the embodiment shown in FIG. 7.

The method provided by the embodiment of the present disclosure, in the service providing process, when detecting that the application server is unavailable, replaces the application server that provides the service for the user entity, thereby ensuring continuity of the service.

Based on the architecture diagram of the network connection establishment system shown in FIG. 1 , the embodiment of the present disclosure provides a method for establishing a network connection. Referring to FIG. 7 , the method flow provided by the embodiment of the present disclosure includes:

701. When detecting the change of the location information, the user entity sends a second service query request to the control server.

In the process of acquiring the service from the first application server, when the user entity detects that the tracking cell identity change or the Cell-ID change or the E-SMLC positioning change exceeds a certain threshold, the location information change may be determined, and then the second server is sent to the control server. The service query request includes the update location information and the service identifier of the user entity. If the upstream deployment of the user entity has a mobile edge computing server, the mobile edge computing server may intercept the second service query request and send the second service query request to the control server; if the user entity's uplink is not deployed with the mobile edge The computing server can send a second service query request directly to the control server.

702. When receiving the second service query request of the user entity, the control server acquires the third application server address according to the updated location information and the service identifier of the user entity, and sends a data synchronization request to the first application server.

When receiving the second service query request of the user entity, the control server determines the third application service address of the third application server to be accessed according to the information such as the updated location information, the trajectory of the user entity, and the current road condition. The control server sends a data synchronization request to the first application server, where the data synchronization request includes a user entity identifier, a service identifier, a third application server identifier, a third application server address, and the like, and the data synchronization request is used to trigger the first application server and the third The application server synchronizes data. Data synchronization between the first application server and the third application server, including but not limited to the following scenarios:

In the first scenario, the first application server is a cloud application server, and the third application server is an edge application server. The data synchronization process is that the cloud server synchronizes the stored interaction data with the user entity to the edge of the user entity to be accessed. The process of applying the server.

In the second scenario, the first application server is an edge application server, and the third application server is a cloud application server, and the data synchronization process synchronizes the stored interaction data with the user entity to the user entity to be accessed by the edge application server. The process of cloud application server.

In a third scenario, the first application server is an edge application server, and the third application server is another edge application server. The data synchronization process is an edge application server that synchronizes the stored interaction data with the user entity to the user entity. The process of another edge application server to be accessed.

When receiving the data synchronization request, the first application server initiates a data pre-synchronization request to the third application server corresponding to the third application server address, where the data pre-synchronization request includes the user entity identifier, the service identifier, the data to be synchronized, and the like. After the data synchronization is completed, the first application server sends a data synchronization response to the control server, where the data synchronization response includes a user entity identifier, a service identifier, and a third application server identifier.

703. When receiving the data synchronization response of the first application server, the control server sends the third application server address to the user entity.

When receiving the data synchronization response of the first application server, the control server sends the third application server address to the user entity to trigger the user entity to establish a network connection with the third application server. If the first application server is an edge application server and the third application server is another edge application server, and the first application server and the third application server are located on different mobile edge computing server platforms, the first application server is received. After the data synchronization response, the control server detects whether the user entity accesses the platform of the mobile edge computing server corresponding to the third application server, and if the user entity accesses the platform of the mobile edge computing server corresponding to the third application server, The third application server address is sent to the user entity; if the user entity does not access the platform of the mobile edge computing server corresponding to the third application server, the first application server address is sent to the user entity, and the first application server and the first application server are maintained. The data synchronization status between the three application servers.

704. When receiving the third application server address, the user entity establishes a network connection with the third application server corresponding to the third application server address.

When receiving the third application server address, the user entity establishes a network connection with the third application server corresponding to the third application service address according to the third application server address. Specifically, if the received third application server address is the domain name and port number of the edge application server, the user entity sends a domain name query request to the domain name query system, and queries the IP address of the edge application server corresponding to the domain name of the edge application server. And establishing a network connection with the third application server by querying the IP address and port number of the edge application server.

In another implementation of the present disclosure, after the user entity successfully communicates with the third application server, the third notification message is further sent to the control server, where the third notification message includes the user entity identifier, the service identifier, and the third application server address. And, when receiving the third notification message, the control server stores a correspondence between the user entity identifier, the service identifier, and the third application server address.

FIG. 8 shows a process of establishing a network connection provided by an embodiment of the present disclosure in a V2X scenario, where the process is as follows:

The V2X UE sends a V2X AS query request to the V2X CF, where the V2X UE detects the location update, and the V2X AS query request includes the V2X UE update location information, and the V2X Service, when the V2X UE obtains the service from the Edge V2X AS1. Identification

2. The V2X CF determines the Edge V2X AS2 corresponding to the MEC to be accessed, and sends a data synchronization request to the Edge V2X AS1, where the data synchronization request includes a V2X UE identifier, a V2X Service identifier, and an Edge V2X AS2 identifier.

3. When receiving the data synchronization request, the Edge V2X AS1 initiates a data pre-synchronization request to the Edge V2X AS2. The data pre-synchronization request includes the V2X UE identifier, the V2X Service identifier, and the data to be synchronized, and the Edge V2X AS1 passes the Edge V2X AS2. Interact and synchronize data;

4. After the data synchronization is completed, the Edge V2X AS1 sends a data synchronization response to the V2X CF. The data synchronization response includes a V2X UE identifier, a V2X Service identifier, and an Edge V2X AS2 identifier.

5. When it is detected that the V2X UE is connected to the MEC platform where the Edge V2X AS2 is located, the Edge V2X AS2 domain name and port number are sent to the V2X UE; when it is detected that the V2X UE still accesses the MEC platform where the Edge V2X AS1 is located, The Edge V2X AS1 domain name and port number are sent to the V2X UE, and the data synchronization state between the Edge V2X AS1 and the Edge V2X AS2 is maintained;

6. The V2X UE sends a domain name query request to the DNS to obtain an Edge V2X AS2 IP address corresponding to the Edge V2X AS2 domain name.

7. The V2X UE initiates a network connection with the Edge V2X AS2 based on the Edge V2X AS2 IP address and port number;

After the V2X UE successfully communicates with the Edge V2X AS2, the V2X UE sends a notification message to the V2X CF to notify the V2X CF to store the correspondence between the V2X Service identifier, the Edge V2X AS2 IP address, and the port number.

The method provided by the embodiment of the present disclosure performs data synchronization between two application servers before and after the handover when the location update of the user entity needs to be switched to the new application server, so as to avoid the service being unavailable after the handover, and improving the service quality.

An embodiment of the present disclosure provides a user entity. Referring to FIG. 9, the user entity includes: a sending unit 901 and a receiving unit 902.

The sending unit 901 is configured to perform step 301 in FIG. 3 and step 701 in FIG. 7;

The receiving unit 902 is configured to perform step 303 in FIG. 3, step 502 in FIG. 5, and step 704 in FIG.

The embodiment of the present disclosure provides a control server. Referring to FIG. 10, the control server includes: a receiving unit 1001, a query unit 1002, and a sending unit 1003.

The receiving unit 1001 is configured to perform step 302 in FIG. 3, steps 702 and 703 in FIG. 7;

The query unit 1002 is configured to perform step 302 in FIG. 3;

The transmitting unit 1003 is configured to perform step 501 in FIG. 5.

The embodiment of the present disclosure provides a mobile edge computing server. Referring to FIG. 11, the mobile edge computing server includes: a receiving unit 1101, an address adding unit 1102, and a sending unit 1103.

The receiving unit 1101, the address adding unit 1102, and the sending unit 1103 are used to implement the process between step 301 and step 302 in FIG.

It should be noted that, when the user entity, the control server, and the mobile edge computing server provided by the foregoing embodiments establish a network connection, only the division of each functional module is used as an example. In an actual application, the foregoing function may be allocated according to requirements. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the embodiment of the method for establishing a user entity, a control server, a mobile edge computing server, and a network connection provided by the foregoing embodiments is the same concept. For details, refer to the method embodiment, and details are not described herein again.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above description is only an alternative embodiment of the present disclosure, and is not intended to limit the disclosure, and any modifications, equivalents, improvements, etc., made within the spirit and principles of the present disclosure should be included in the protection of the present disclosure. Within the scope.

Claims

A method for establishing a network connection, the method comprising:

Sending a first service query request to the control server, where the first service query request includes location information and a service identifier of the user entity, where the first service query request is used by the control server according to the location information and service of the user entity Identifying, querying the first application server address, and sending the first application server address to the user entity;

Receiving the first application server address, and sending a service acquisition request to the first application server corresponding to the first application server address, where the service acquisition request includes a user entity identifier and a service identifier, where the service acquisition request is used for The first application server provides a service corresponding to the service identifier to the user entity corresponding to the user entity identifier.
The method according to claim 1, wherein the first application server address comprises an edge application server domain name and a port number, and the first application server corresponding to the first application server address sends a service acquisition request before ,Also includes:

Sending a domain name query request to the domain name system, the domain name query request includes the edge application server domain name, and the domain name query request is used by the domain name system to query the network interconnection protocol IP of the edge application server corresponding to the edge application server domain name An address, and sending an IP address of the edge application server to the user entity;

Sending the service acquisition request to the first application server corresponding to the first application server address includes:

Sending the service acquisition request to an edge application server corresponding to the IP address of the edge application server and the port number.
The method according to claim 1, wherein the first application server address comprises a network interconnection protocol IP address of the cloud application server, and the first application server corresponding to the first application server address sends a service Get the request, including:

Sending the service acquisition request to a cloud application server corresponding to the IP address of the cloud application server.
The method according to any one of claims 1 to 3, further comprising:

Sending a first notification message to the control server when the service corresponding to the service identifier is obtained, where the first notification message includes a user entity identifier, the service identifier, and the first application server address, where the A notification message is used by the control server to store a correspondence between the user entity identifier, the service identifier, and the first application server address.
The method of claim 4, wherein the method further comprises:

Receiving a service address change message sent by the control server, where the service address change message includes a second application server address, where the service address change message is that the control server detects the service identifier provided by the first application server When the corresponding service is unavailable, the second application server corresponding to the second application server address is used to provide the service corresponding to the service identifier;

Establishing a network connection with the second application server.
The method of claim 4, wherein the method further comprises:

Sending a second service query request to the control server when the change of the location information is detected, the second service query request including update location information of the user entity and the service identifier, the second service query Requesting, for the control server, to query a third application server address, triggering the first application server and the third application server corresponding to the third application server address to perform data synchronization, and sending the third application server address to The user entity;

Receiving the third application server address, and establishing a network connection with the third application server corresponding to the third application server address.
A method for establishing a network connection, the method comprising:

Receiving a first service query request of the user entity, where the first service query request includes location information and a service identifier of the user entity;

Querying, according to the location information of the user entity and the service identifier, a first application server address, and sending the first application server address to the user entity, where the first application server address is used by the user entity Sending a service acquisition request to the first application server, where the service acquisition request includes a user entity identifier and a service identifier.
The method according to claim 7, wherein the first service query request further comprises a mobile edge computing server address of a mobile edge computing server located upstream of the user entity;

The querying the first application server address according to the location information of the user entity and the service identifier includes:

And querying, according to the location information, the mobile edge computing server address, and the service identifier, an edge application server domain name and a port number, and using the edge application server domain name and port number as the first application server address.
The method according to claim 7, wherein the querying the first application server address according to the location information of the user entity and the service identifier comprises:

Querying the network interconnection protocol IP address of the cloud application server according to the location information of the user entity and the service identifier, and using the IP address of the cloud application server as the first application server address.
The method according to any one of claims 7 to 9, wherein the method further comprises:

Receiving a first notification message sent by the user entity, where the first notification message includes the user entity identifier, the service identifier, and the first application server address;

And storing a correspondence between the user entity identifier, the service identifier, and the first application server address.
The method of claim 10, wherein the method further comprises:

When detecting that the service corresponding to the service identifier provided by the first application server is unavailable, acquiring a second application server address capable of providing an available service, and sending a service address change message to the user entity, where the service address is changed The message includes the second application server address, and the service address change message is used by the user entity to establish a network connection with a second application server corresponding to the second application server address.
The method according to claim 11, wherein the obtaining a second application server address capable of providing an available service comprises:

Determining, according to the service identifier, whether another edge application service address capable of providing an available service exists in the service status table, where the service status table stores a correspondence between the service identifier, the application server address, and the service available status;

If yes, use other edge service addresses as the second application server address;

If not, the IP address of the cloud application server is used as the second application server address.
The method according to claim 12, wherein the querying, before querying the service status table, whether there is another edge service address capable of providing an available service, according to the service identifier, further comprising:

Receiving a status report sent by the mobile edge computing server and the cloud application server, where the status report includes an application server address;

The service status table is maintained according to the status report.
The method of claim 10, wherein the method further comprises:

Receiving a second service query request of the user entity, where the second service query request includes update location information of the user entity and the service identifier, and the second service query request is detected by the user entity Send when the location information changes;

Acquiring a third application server address according to the updated location information of the user entity and the service identifier, and sending a data synchronization request to the first application server, where the data synchronization request includes the user entity identifier, the service And the third application server address, the data synchronization request is used by the first application server to perform data synchronization with a third application server corresponding to the third application server address, and after the data synchronization is completed, to the control server Send a data synchronization response;

And sending, by the user entity, the third application server address, where the third service address is used by the user entity to establish a network connection with the third application server.
A method for establishing a network connection, the method comprising:

Receiving a first service query request sent by the user entity, where the first service query request includes location information and a service identifier of the user entity;

Adding a mobile edge computing server address to the first service query request, and transmitting a first service query request including the mobile edge computing server address to a control server, where the mobile edge computing server address is included a service query request is used by the control server to query an edge application server domain name and a port number according to the location information of the user entity, the service identifier, and the mobile edge calculation server address, and the edge application server domain name and The port number is sent to the user entity, and the edge application server domain name and port number are used by the user entity to establish a network connection with the edge application server.
The method according to claim 15, wherein after the sending the first service query request including the mobile edge calculation server address to the control server, the method further includes:

Receiving a service acquisition request sent by the user entity, where the service acquisition request includes a user entity identifier and the service identifier;

Sending the service acquisition request to the edge application server, where the service acquisition request is used by the edge application server to provide a service corresponding to the service identifier to the user entity corresponding to the user entity identifier.
The method of claim 15 wherein the method further comprises:

Receiving a status report sent by each edge application server, where the status report includes an edge application server address;

And sending the status report to the control server, where the status report is used by the control server to maintain a service status table, where the service status table stores a correspondence between a service identifier, an application server address, and an available status.
A user entity, wherein the user entity comprises:

a sending unit, configured to send a first service query request to the control server, where the first service query request includes location information and a service identifier of the user entity, where the first service query request is used by the control server according to the user entity The location information and the service identifier, query the first application server address, and send the first application server address to the user entity;

a receiving unit, configured to receive the first application server address;

The sending unit is further configured to send a service acquisition request to the first application server corresponding to the first application server address, where the service obtaining request includes a user entity identifier and a service identifier, where the service obtaining request is used by the sending An application server provides a service corresponding to the service identifier to the user entity corresponding to the user entity.
The user entity according to claim 18, wherein the first application server address includes an edge application server domain name and a port number, and the sending unit is further configured to send a domain name query request to the domain name system, the domain name query The request includes the edge application server domain name, and the domain name query request is used by the domain name system to query a network interconnection protocol IP address of the edge application server corresponding to the edge application server domain name, and the IP address of the edge application server Sent to the user entity;

The sending unit is further configured to send the service acquisition request to an edge application server corresponding to the IP address of the edge application server and the port number.
The user entity according to claim 18, wherein the first application server address comprises a network interconnection protocol IP address of the cloud application server, and the sending unit is further configured to send an IP address to the cloud application server. The corresponding cloud application server sends the service acquisition request.
The user entity according to any one of claims 18 to 20, wherein the sending unit is further configured to: when the service corresponding to the service identifier is acquired, send a first notification message to the control server The first notification message includes a user entity identifier, the service identifier, and the first application server address, where the first notification message is used by the control server to store the user entity identifier, the service identifier, and a location Corresponding relationship between the first application server addresses.
The user entity according to claim 21, wherein the user entity further comprises:

The receiving unit is configured to receive a service address change message sent by the control server, where the service address change message includes a second application server address, and the service address change message is that the control server detects the first application The second application server corresponding to the second application server address is used to provide the service corresponding to the service identifier, where the service corresponding to the identifier provided by the server is unavailable;

The connecting unit is further configured to establish a network connection with the second application server.
The user entity according to claim 22, wherein the sending unit is further configured to: when detecting the change of the location information, send a second service query request to the control server, the second service query The request includes the updated location information of the user entity and the service identifier, and the second service query request is used by the control server to query a third application server address, triggering the first application server and the third application server The third application server corresponding to the address performs data synchronization, and sends the third application server address to the user entity;

The receiving unit is further configured to receive the third application server address, and establish a network connection with a third application server corresponding to the third application server address.
A control server, wherein the control server comprises:

a receiving unit, configured to receive a first service query request of the user entity, where the first service query request includes location information and a service identifier of the user entity;

a querying unit, configured to query the first application server address according to the location information of the user entity and the service identifier;

a sending unit, configured to send the first application server address to the user entity, where the first application server address is used by the user entity to send a service acquisition request to a first application server, where the service obtaining request includes a user Entity ID and service ID.
The control server according to claim 24, wherein the first service query request further comprises a mobile edge computing server address of a mobile edge computing server located upstream of the user entity;

The querying unit is further configured to query an edge application server domain name and a port number according to the location information, the mobile edge calculation server address, and the service identifier, and use the edge application server domain name and port number as the first An application server address.
The control server according to claim 24, wherein the query unit is further configured to query a network interconnection protocol IP address of the cloud application server according to the location information of the user entity and the service identifier, The IP address of the cloud application server is used as the first application server address.
The control server according to any one of claims 24 to 26, wherein the control server further comprises:

a receiving unit, configured to receive a first notification message sent by the user entity, where the first notification message includes the user entity identifier, the service identifier, and the first application server address;

The storage unit is further configured to store a correspondence between the user entity identifier, the service identifier, and the first application server address.
The control server according to claim 27, wherein the control server further comprises:

An acquiring unit, configured to acquire a second application server address capable of providing an available service when detecting that the service corresponding to the service identifier provided by the first application server is unavailable;

The sending unit is further configured to send a service address change message to the user entity, where the service address change message includes the second application server address, where the service address change message is used by the user entity and the first The second application server corresponding to the application server address establishes a network connection.
The control server according to claim 28, wherein the obtaining unit is further configured to query, according to the service identifier, whether another edge service address capable of providing an available service exists in the service status table, the service status table The correspondence between the service identifier, the application server address, and the service available state is stored; if yes, the other edge service address is used as the second application server address; if not, the IP address of the cloud application server is used as The second application server address.
The control server according to claim 29, wherein the control server further comprises:

The receiving unit is further configured to receive a status report sent by the mobile edge computing server and the cloud application server, where the status report includes an application server address;

And a maintenance unit, configured to maintain the service status table according to the status report.
The control server according to claim 27, wherein the control server further comprises:

The receiving unit is configured to receive a second service query request of the user entity, where the second service query request includes update location information of the user entity and the service identifier, where the second service query request is Transmitting when the user entity detects that the location information changes;

An acquiring unit, configured to acquire a third application server address according to the updated location information of the user entity and the service identifier, and send a data synchronization request to the first application server, where the data synchronization request includes the user entity An identifier, the service identifier, and the third application server address, where the data synchronization request is used by the first application server to perform data synchronization with a third application server corresponding to the third application server address, and in data synchronization After completion, send a data synchronization response to the control server;

The sending unit is further configured to: when the data synchronization response is received, send the third application server address to the user entity, where the third service address is used by the user entity and the third application The server establishes a network connection.
A mobile edge computing server, wherein the mobile edge computing server comprises:

a receiving unit, configured to receive a first service query request sent by a user entity, where the first service query request includes location information and a service identifier of the user entity;

An address adding unit, configured to add a mobile edge computing server address to the first service query request;

a sending unit, configured to send a first service query request including the mobile edge computing server address to a control server, where the first service query request including the mobile edge computing server address is used by the control server according to the The location information of the user entity, the service identifier, and the mobile edge computing server address, query the edge application server domain name and port number, and send the edge application server domain name and port number to the user entity, the edge application The server domain name and port number are used by the user entity to establish a network connection with the edge application server.
The mobile edge computing server according to claim 32, wherein the receiving unit is further configured to receive a service acquisition request sent by the user entity, where the service acquisition request includes a user entity identifier and the service identifier;

The sending unit is configured to send the service obtaining request to an edge application server, where the service obtaining request is used by the edge application server to provide a service corresponding to the service identifier to a user entity corresponding to the user entity identifier.
The mobile edge computing server according to claim 33, wherein the receiving unit is further configured to receive a status report sent by each edge application server, where the status report includes an edge application server address;

The sending unit is further configured to send the status report to the control server, where the status report is used by the control server to maintain a service status table, where the service status table stores a service identifier, an application server address, and The correspondence between the available states.
A network device, comprising: a memory, a processor, a transceiver, and a bus, wherein the memory, the processor, and the transceiver are connected to each other through the bus, and the memory is used to store computer instructions. The processor executes the computer instructions when the network device is in operation, such that the network device performs the method of establishing a network connection according to any one of claims 1 to 17.
A computer readable storage medium, for storing computer software instructions for use by a user entity, comprising: performing the network connection of any one of claims 1 to 17. The program established by the method of establishment.
A system for establishing a network connection, characterized in that the system for establishing a network connection comprises a user entity, a control server and a mobile edge computing server;

The user entity is the user entity of any one of claims 1 to 6;

The control server is the control server according to any one of claims 7 to 14;

The mobile edge computing server is the mobile edge computing server of any one of claims 15 to 17.