CN116668988A - C-V2X unified access gateway and access method based on multi-source sensing equipment - Google Patents
C-V2X unified access gateway and access method based on multi-source sensing equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
- H04W12/068—Authentication using credential vaults, e.g. password manager applications or one time password [OTP] applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
- H04W12/069—Authentication using certificates or pre-shared keys
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a C-V2X unified access gateway and an access method based on multi-source sensing equipment, and belongs to the technical field of Internet of vehicles. The method comprises the following steps: device access and identity authentication, data parsing and data distribution. According to the gateway and the access method, the safety of equipment access is improved, the road side sensing equipment and the vehicle end sensing equipment have uniform identity marks, and uniform authentication is performed through the uniform access gateway. In addition, compared with the prior art, the invention improves the data transmission efficiency, and effectively improves the data transmission efficiency by carrying out standard data analysis and data distribution on the unified gateway.
Description
Technical Field
The invention relates to a C-V2X unified access gateway and an access method based on multisource sensing equipment, and belongs to the technical field of Internet of vehicles.
Background
With the development of intelligent manufacturing technology, new generation information communication technology and artificial intelligent technology, the Internet of vehicles industry in China enters a fast lane, the technology innovation is increasingly active, the novel application is developed vigorously, the industrial scale is continuously expanded, but the problems that key core technology needs to be broken through, the industry ecology needs to be perfected, the policy and regulation needs to be full and the like exist.
Firstly, the key products do not reach the commercialization level yet, and the key products of commercial deployment of the Internet of vehicles comprise chips, vehicle-mounted terminals, road side facilities and the like, which have great progress in China, but the products themselves have a gap from commercial deployment, and the development test pace and scale need to be accelerated; secondly, the business mode of the Internet of vehicles is unclear, the network deployment scheme is ambiguous, because the Internet of vehicles relates to the industry chain length, and the involved manufacturers are numerous, a powerful leading party and a unified network deployment scheme are not formed yet, the protocol consistency and interoperability among different equipment manufacturers are not high, and the situation that the whole industry lacks core cohesive force, so that the industry pushing force is dispersed is not achieved. The multisource sensing equipment builds a unified access gateway to provide support for equipment data access and equipment identity authentication.
Disclosure of Invention
In order to establish a standard unified access gateway flow, the invention provides a C-V2X unified access gateway and an access method based on multi-source sensing equipment by performing standardized definition on the processes of equipment access, identity authentication, data analysis, data distribution and the like of sensing equipment at a road side end and sensing equipment at an intelligent vehicle end, wherein the technical scheme is as follows:
a first object of the present invention is to provide a C-V2X unified access gateway based on a multi-source sensing device, comprising:
the device access and identity authentication module is integrated with the device access and identity authentication module and comprises: the device management module, the data security communication module and the message subscription module are downwards used for supporting connection with mass devices and collecting device data to cloud; the server side is used for providing a cloud API upwards, and the server side sends an instruction to the equipment side by calling the cloud API to realize remote control;
the data analysis module is used for analyzing the corresponding data formats according to different protocol contents of the equipment, and authenticating the validity of the data reporting sources, the correctness of the data formats and the validity of the data contents;
the data distribution module is used for distributing the sensing equipment data of the road side end and the sensing equipment data of the intelligent vehicle end through the high-performance message queue after analysis and verification of the unified gateway, guaranteeing timeliness of the data, and sending the data in a custom format or a service end subscription mode to the platform by using custom Topic after timely responding equipment of each service is accessed to the platform.
The second object of the present invention is to provide a C-V2X gateway access method based on a multi-source sensing device, implemented based on the gateway, including: device access and identity authentication, data parsing and data distribution.
Optionally, the device access and identity authentication includes:
firstly, equipment management service initiates a connection request to access the management service, acquires an equipment key, and carries an equipment ID in connection; the management service calls a service platform to acquire a secret key interface; after the service platform performs equipment identity information authentication, starting a state equipment key and a domain name address of an equipment access service under the equipment authenticated by the acquired key;
then the equipment accesses the service, and the equipment accesses the access service by using the MQTT protocol; the access service calls a login authentication interface and returns an authentication result to the equipment; after passing the authentication, maintaining long connection, and reporting data to access service by the equipment through an MQTT protocol, otherwise, not allowing the connection platform; each time the device is restarted/long connected and disconnected, the key and the access service address are acquired each time, and the data can be reported.
And finally, before the equipment is accessed to the platform, identity authentication is required to be carried out, and equipment identity authentication by using equipment keys and certificates is supported.
Optionally, the data parsing includes:
1. and (3) checking protocol data: the platform analyzes the corresponding data format based on the MQTT protocol, and authenticates the validity of the data reporting source, the correctness of the data format and the validity of the data content;
2. protocol adaptation: the MQTT protocol gateway provides a unified entrance from the device to the platform, and the gateway carries out protocol adaptation, message format conversion and message route distribution on requests from various terminal devices;
3. the protocol adopts: the communication mode accords with the relevant regulations in the MQTT, the communication protocol adopts TCP or UDP, the platform is used as a server terminal, and the terminal is used as a client terminal; when the data communication link is abnormal, the terminal adopts an SMS message mode to communicate;
4. specifying a base data type;
5. transmission rules: the protocol adopts a network byte order of a big-end mode to transfer words and double words;
6. message composition: ASN.1 notation uses BNF format;
7. communication establishment: connection establishment, connection maintenance and connection disconnection;
8. message processing: the platform sends the message, the terminal sends the message, the data communication link is normal, the data communication link is abnormal.
Optionally, the data distribution includes: and transmitting data in a custom format by using the custom Topic, transmitting standardized object model data and a server subscription mode by using the object model function related Topic.
Optionally, the sending the data in the custom format using the custom Topic includes: on the platform, the self-defined operation authority of the product is a published Topic class, the Topic class of the product can be automatically mapped into equipment under the product, and the self-defined Topic class has two modes, including:
1. customizing a Topic, and customizing a Topic class on a platform console;
2. calling a custom Topic class of a cloud API by using a cloud SDK;
when the device side is developed, the configuration device sends the message to the custom Topic, and simultaneously, on the device side, the custom Topic and the message format of the sent message are configured.
Optionally, the usage model function-related Topic includes:
1. defining an object model on a platform control console according to the service condition of equipment by using a single additive model;
2. when the equipment end is developed, configuring equipment reporting attribute and event data according to a defined object model; standard data format of device reporting attribute and event, device reporting attribute and event; and the platform flows the flow of data transfer and distribution to the server, and transfers the message flows of device report message, device state change notification, device life cycle change, object model historical data report, OTA upgrade state notification, gateway discovery sub-device report, device topology relation change and the like to the server, and the message transfers data based on Topic.
The invention has the beneficial effects that:
according to the gateway and the access method, the safety of equipment access is improved, the road side sensing equipment and the vehicle end sensing equipment have uniform identity marks, and uniform authentication is performed through the uniform access gateway.
In addition, compared with the prior art, the invention improves the data transmission efficiency, and effectively improves the data transmission efficiency by carrying out standard data analysis and data distribution on the unified gateway.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a gateway structure and an access flow according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Embodiment one:
the embodiment provides a C-V2X unified access gateway based on multi-source sensing equipment, which comprises the following components:
the device access and identity authentication module is integrated with the device access and identity authentication module and comprises: the device management module, the data security communication module and the message subscription module are downwards used for supporting connection with mass devices and collecting device data to cloud; the server side is used for providing a cloud API upwards, and the server side sends an instruction to the equipment side by calling the cloud API to realize remote control;
the data analysis module is used for analyzing the corresponding data formats according to different protocol contents of the equipment, and authenticating the validity of the data reporting sources, the correctness of the data formats and the validity of the data contents;
the data distribution module is used for distributing the sensing equipment data of the road side end and the sensing equipment data of the intelligent vehicle end through the high-performance message queue after analysis and verification of the unified gateway, guaranteeing timeliness of the data, and sending the data in a custom format or a service end subscription mode to the platform by using custom Topic after timely responding equipment of each service is accessed to the platform.
Embodiment two:
the embodiment provides a C-V2X gateway access method based on multi-source sensing equipment, referring to FIG. 1, comprising the following steps: the device access and identity authentication, data analysis and data distribution are specifically described as follows.
1. Device access and identity authentication:
firstly, a device management service initiates a connection request to access a management service, and a device key is acquired. The connection has a device ID; the management service calls a service platform to acquire a secret key interface; after the service platform authenticates the equipment identity information, the equipment which is authenticated by the acquired key is started to the equipment key+the domain name address of the equipment access service.
Then the device access service device uses the MQTT protocol to access the access service; the access service calls a login authentication interface and returns an authentication result to the equipment; after passing the authentication, maintaining long connection, reporting data to access service by the equipment through an MQTT protocol, otherwise, not allowing to connect with a platform; each time the device is restarted/long connected and disconnected, the key and the access service address are acquired each time, and the data can be reported.
And finally, the equipment is required to pass identity authentication before being accessed to the platform. And supporting the device identity authentication by using the device key and the certificate.
2. Data analysis: the platform server analyzes the corresponding data format according to different protocol contents of the equipment, and authenticates the validity of the data reporting source, the correctness of the data format and the validity of the data content. The protocol gateway provides a unified portal from device terminals to the platform, and the gateway will perform protocol adaptation, message format conversion and message route distribution on requests from various terminal devices. The method is mainly realized by the following points:
1. and (3) checking protocol data: the platform analyzes the corresponding data format based on the MQTT protocol, and authenticates the validity of the data reporting source, the correctness of the data format and the validity of the data content.
2. Protocol adaptation: the MQTT protocol gateway provides a device-to-platform unified portal that will perform protocol adaptation, message format (asn.1) conversion and message route distribution for requests from various terminal devices.
3. The protocol adopts: the communication mode accords with the relevant regulations in the MQTT, the communication protocol adopts TCP or UDP, the platform is used as a server terminal, and the terminal is used as a client terminal. When the data communication link is abnormal, the terminal can communicate in an SMS message mode.
4. The base data type is specified.
5. Transmission rules: the protocol uses big-end mode (big-endian) network endian to pass words and doublewords.
6. Message composition: ASN.1 notation mainly uses the BNF format.
7. Communication establishment: establishment of connection, maintenance of connection, disconnection of connection.
8. Message processing: the platform sends the message, the terminal sends the message, the data communication link is normal, the data communication link is abnormal.
3. And (3) data distribution: the device data is analyzed and verified by the unified gateway and then distributed through the high-performance message queue, the timeliness of the data is ensured during data distribution, and the timely response of each service is met. After the device is accessed to the platform, the device can communicate with the platform. The device may send data to the platform by:
(1) And transmitting the data in the custom format by using the custom Topic. On the platform, the operation authority is customized for the product and is the issued Topic class. The Topic class of a product will automatically map into the device under the product. Two ways of customizing Topic classes: 1) And customizing the Topic, and customizing the Topic class on the platform control console. 2) And calling a custom Topic class of the cloud API by using the cloud SDK. When the device side is developed, the configuration device sends a message to the custom Topic. Custom Topic and message formats of the transmitted message are configured on the device side.
(2) And sending the standardized object model data by using the object model function related Topic. The device may actively report attributes and events. The implementation process comprises the following steps: 1) And defining an object model on a platform control console according to the service condition of equipment. 2) And when the equipment end is developed, configuring the equipment reporting attribute and event data according to the defined object model. And the standard data format of the device reporting attribute and the event, and the device reporting attribute and the device reporting event. The platform flows the flow of data transfer and distribution to the server, and can transfer the information flow of equipment report information, equipment state change notification, equipment life cycle change, object model historical data report, OTA upgrading state notification, gateway discovery sub-equipment report, equipment topological relation change and the like to the server in the following modes. The message conveys data based on Topic.
(3) Service side subscription: one or more message types are subscribed to using a server subscription function of the platform. The platform flows the message streams of the types of all the devices to the server according to the subscription set by the user.
According to the gateway and the access method, the safety of equipment access is improved, the road side sensing equipment and the vehicle end sensing equipment have uniform identity marks, and uniform authentication is performed through the uniform access gateway.
In addition, compared with the prior art, the data transmission efficiency is improved, and the data transmission efficiency is effectively improved by carrying out standard data analysis and data distribution on the unified gateway.
Some steps in the embodiments of the present invention may be implemented by using software, and the corresponding software program may be stored in a readable storage medium, such as an optical disc or a hard disk.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (7)
1. A C-V2X unified access gateway based on a multi-source sensing device, the gateway comprising:
the device access and identity authentication module is integrated with the device access and identity authentication module and comprises: the device management module, the data security communication module and the message subscription module are downwards used for supporting connection with mass devices and collecting device data to cloud; the server side is used for providing a cloud API upwards, and the server side sends an instruction to the equipment side by calling the cloud API to realize remote control;
the data analysis module is used for analyzing the corresponding data formats according to different protocol contents of the equipment, and authenticating the validity of the data reporting sources, the correctness of the data formats and the validity of the data contents;
the data distribution module is used for distributing the sensing equipment data of the road side end and the sensing equipment data of the intelligent vehicle end through the high-performance message queue after analysis and verification of the unified gateway, guaranteeing timeliness of the data, and sending the data in a custom format or a service end subscription mode to the platform by using custom Topic after timely responding equipment of each service is accessed to the platform.
2. A C-V2X gateway access method based on a multi-source sensing device, the method being implemented based on the gateway of claim 1, comprising: device access and identity authentication, data parsing and data distribution.
3. The C-V2X gateway access method based on multi-source sensing device of claim 2, wherein the device access and identity authentication comprises:
firstly, a device management service initiates a connection request to access the management service, and obtains a device key, wherein the device key is in connection with a device ID; the management service calls a service platform to acquire a secret key interface; after the service platform performs equipment identity information authentication, starting a state equipment key and a domain name address of an equipment access service under the equipment authenticated by the acquired key;
then the equipment accesses the service, and the equipment accesses the access service by using the MQTT protocol; the access service calls a login authentication interface and returns an authentication result to the equipment; after passing the authentication, maintaining long connection, and reporting data to access service by the equipment through an MQTT protocol, otherwise, not allowing the connection platform; each time the device is restarted/long connected and disconnected, the key and the access service address are acquired each time, and the data can be reported.
And finally, supporting the equipment identity authentication by using the equipment key and the certificate through the identity authentication before the equipment is accessed to the platform.
4. The C-V2X gateway access method based on multi-source sensing device of claim 2, wherein the data parsing comprises:
1. and (3) checking protocol data: the platform analyzes the corresponding data format based on the MQTT protocol, and authenticates the validity of the data reporting source, the correctness of the data format and the validity of the data content;
2. protocol adaptation: the MQTT protocol gateway provides a unified entrance from the device to the platform, and the gateway carries out protocol adaptation, message format conversion and message route distribution on requests from various terminal devices;
3. the protocol adopts: the communication mode accords with the relevant regulations in the MQTT, the communication protocol adopts TCP or UDP, the platform is used as a server terminal, and the terminal is used as a client terminal; when the data communication link is abnormal, the terminal adopts an SMS message mode to communicate;
4. specifying a base data type;
5. transmission rules: the protocol adopts a network byte order of a big-end mode to transfer words and double words;
6. message composition: ASN.1 notation uses BNF format;
7. communication establishment: connection establishment, connection maintenance and connection disconnection;
8. message processing: the platform sends the message, the terminal sends the message, the data communication link is normal, the data communication link is abnormal.
5. The C-V2X gateway access method based on multi-source sensing device of claim 2, wherein the data distribution comprises: and transmitting data in a custom format by using the custom Topic, transmitting standardized object model data and a server subscription mode by using the object model function related Topic.
6. The C-V2X gateway access method based on multi-source sensing device of claim 5, wherein said transmitting custom formatted data using custom Topic comprises: on the platform, the self-defined operation authority of the product is a published Topic class, the Topic class of the product can be automatically mapped into equipment under the product, and the self-defined Topic class has two modes, including:
1. customizing a Topic, and customizing a Topic class on a platform console;
2. calling a custom Topic class of a cloud API by using a cloud SDK;
when the device side is developed, the configuration device sends the message to the custom Topic, and simultaneously, on the device side, the custom Topic and the message format of the sent message are configured.
7. The C-V2X gateway access method based on multi-source sensing device of claim 5, wherein said usage model function-related Topic comprises:
1. defining an object model on a platform control console according to the service condition of equipment by using a single additive model;
2. when the equipment end is developed, configuring equipment reporting attribute and event data according to a defined object model; standard data format of device reporting attribute and event, device reporting attribute and event; and the platform flows the flow of data transfer and distribution to the server, and transfers the message flows of device report message, device state change notification, device life cycle change, object model historical data report, OTA upgrade state notification, gateway discovery sub-device report, device topology relation change and the like to the server, and the message transfers data based on Topic.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117135011A (en) * | 2023-10-27 | 2023-11-28 | 深圳市天思智慧科技有限公司 | Method for adapting gateway to multiple cloud platforms based on MQTT communication and gateway system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117135011A (en) * | 2023-10-27 | 2023-11-28 | 深圳市天思智慧科技有限公司 | Method for adapting gateway to multiple cloud platforms based on MQTT communication and gateway system |
| CN117135011B (en) * | 2023-10-27 | 2024-02-09 | 深圳市天思智慧科技有限公司 | Method for adapting gateway to multiple cloud platforms based on MQTT communication and gateway system |
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