KR102654836B1 - System for providing connected car service and method thereof - Google Patents

Abstract

The present invention relates to a connected car service provision system and method, wherein an on-vehicle device (OBE) connects to a Wi-Fi AP using encrypted connection information obtained from a service server through DSRC, thereby allowing the user to directly provide the connection information. We intend to provide a connected car service provision system and method that allows connected car services to be provided by accessing a secure Wi-Fi AP without input.
To this end, the present invention provides a vehicle-mounted device for providing connected car services, comprising: a communication unit that communicates with a roadside device in DSRC (Dedicated Short Range Communications) mode and with an AP (Access Point) in Wi-Fi mode; A control unit that connects to the AP in Wi-Fi mode and receives connected car services based on AP access information acquired in DSRC mode; and a storage unit that stores the obtained AP connection information.

Description

Connected car service provision system and method {SYSTEM FOR PROVIDING CONNECTED CAR SERVICE AND METHOD THEREOF}

The present invention relates to a connected car service provision system and method.

In general, Institute of Electrical and Electronics Engineers (IEEE) 802.11p is an approved modification of the IEEE 802.11 standard that adds wireless access to vehicular environments, and is the 802.11 (Wi-Fi) standard required to support Intelligent Transportation System (ITS) software. This defines the points of improvement from the beginning of a commercialized product. This includes high-speed data exchange between vehicles or between vehicles and road infrastructure (V2X communications) in the licensed ITS band of 5.9 GHz (5.85 - 5.925 GHz).

As shown in Figure 1, IEEE 802.11p has 7 channels (channel numbers 172 to 184) with a 10 MHz band, of which channel number 178 is CCH (Control CHannel) and is exclusively used for emergency communication, with both ends Channel numbers 172 and 184 are allocated to safety applications, and the remaining four channels (174, 176, 180, and 182) are used as SCH (Service CHannel).

IEEE 802.11p omits the authentication or connection procedures required for Wi-Fi, so all information is transmitted in real time, which has the advantage of allowing drivers to respond quickly when an emergency situation occurs.

The DSRC (Dedicated Short Range Communications) system of a vehicle to which IEEE 802.11p is applied is equipped with on-board equipment (OBE) and road-side equipment (RSE) that communicate wirelessly with each other, and the vehicle-mounted equipment Through wireless communication between the vehicle and the roadside device (roadside base station), various information necessary for driving the vehicle can be obtained and provided to the driver, thereby improving the driver's convenience.

This DSRC system provides large-capacity streaming services (videos, music, vehicle software updates, etc.) with a data transmission speed of about 27Mbps, but recently, a large-capacity data streaming service has been provided through a Wi-Fi system with a data transmission speed of 300Mbps. .

However, the Wi-Fi AP (Access Point) that provides a large data streaming service has security settings, so in order to access the Wi-Fi AP, the user must manually enter the SSID (Service Set IDentifier) and password as access information, which is inconvenient. .

In addition, there is a problem that causes inconvenience to the user because not only does the user have to know the SSID and password in advance, but the user also has to be aware of it every time the SSID and password change.

Republic of Korea Patent Publication No. 2018-0049772

In order to solve the problems of the prior art as described above, the present invention allows an on-vehicle device (OBE) to connect to a Wi-Fi AP using encrypted connection information obtained from a service server through DSRC, so that the user directly enters the connection information. The purpose is to provide a connected car service provision system and method that allows connected car services to be provided by accessing a secure Wi-Fi AP without having to do so.

The objects of the present invention are not limited to the objects mentioned above, and other objects and advantages of the present invention that are not mentioned can be understood from the following description and will be more clearly understood by the examples of the present invention. Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

The device of the present invention for achieving the above object is a vehicle-mounted device for providing connected car services, and communicates with a roadside device in DSRC (Dedicated Short Range Communications) mode and with an AP (Access Point) in Wi-Fi mode. Ministry of Communications; A control unit that connects to the AP in Wi-Fi mode and receives connected car services based on AP access information acquired in DSRC mode; and a storage unit that stores the obtained AP connection information.

Here, the control unit controls the communication unit to broadcast electronically signed subscription information in DSRC mode, receives AP access information encrypted by a public key from the service server that received the electronically signed subscription information, and then decrypts it with a private key. In Wi-Fi mode, connected car services can be provided by accessing the AP based on the decrypted AP access information.

Additionally, the service server may be equipped with a database in which AP connection information corresponding to each roadside device, service subscription information for each vehicle-mounted device, and public key for each vehicle-mounted device are recorded.

In addition, the service server confirms whether the vehicle-mounted device has subscribed to the service based on the subscription information electronically signed by the private key, and AP access information encrypted with the public key corresponding to the private key with the vehicle-mounted device subscribed to the service. can be provided.

Additionally, the control unit may activate DSRC mode while the vehicle is driving and may activate Wi-Fi mode while the vehicle is stopped.

Additionally, the subscription information may include vehicle ID and service subscription information.

Additionally, the AP connection information may include an SSID (Service Set IDentifier) and a password.

The method of the present invention for achieving the above object is a method of providing a connected car service in a vehicle-mounted device for providing a connected car service, wherein the communication unit receives AP (Access) from the roadside device in DSRC (Dedicated Short Range Communications) mode. Point) Obtaining access information; A storage unit storing the acquired AP access information; and a step where the control unit connects to the AP based on the obtained AP connection information in Wi-Fi mode and receives a connected car service.

Here, the method of providing the connected car service includes broadcasting electronically signed subscription information in DSRC mode; Receiving AP access information encrypted with a public key from the service server that received the electronically signed subscription information and decrypting it with a private key; And it may include the step of receiving a connected car service by connecting to an AP based on the decrypted AP connection information in Wi-Fi mode.

Additionally, the DSRC mode may be activated while the vehicle is driving, and the Wi-Fi mode may be activated while the vehicle is stopped.

The system of the present invention for achieving the above object is a connected car service provision system that broadcasts electronically signed subscription information in DSRC (Dedicated Short Range Communications) mode and encrypts the AP with a public key from the service server. A vehicle-mounted device that receives connection information, decrypts it with a private key, and connects to the AP based on the decrypted AP connection information in Wi-Fi mode to receive connected car services; And based on the electronically signed subscription information received from the vehicle-mounted device, check whether the vehicle-mounted device has subscribed to the service, and send the AP access information encrypted with the public key corresponding to the private key to the vehicle-mounted device subscribed to the service. Includes the service server provided.

Here, the service server may be equipped with a database in which AP connection information corresponding to each roadside device, service subscription information for each vehicle-mounted device, and public key for each vehicle-mounted device are recorded.

The present invention as described above allows an on-vehicle device (OBE) to connect to a Wi-Fi AP using encrypted access information obtained from a service server through DSRC, thereby connecting a secure Wi-Fi AP without the user directly entering access information. It has the effect of allowing access to connected car services.

In addition, the present invention allows an on-vehicle device (OBE) to connect to a Wi-Fi AP using encrypted connection information obtained from a service server through DSRC, so that the on-vehicle device does not need to be equipped with a separate input unit to input the connection information. It has the effect of making it possible.

In addition, the present invention allows an on-vehicle device (OBE) to connect to a Wi-Fi AP using encrypted access information obtained from a service server through DSRC, thereby preventing the user from entering a password directly to access the Wi-Fi AP. It has the effect of preventing password exposure.

In addition, the present invention allows an on-vehicle device (OBE) to connect to a Wi-Fi AP using encrypted access information obtained from a service server through DSRC, so that the user does not need to know even if the Wi-Fi AP access information changes. This has the effect of eliminating the need for additional measures.

In addition, the present invention has the effect of improving the utilization of the DSRC frequency band by allowing an on-vehicle device (OBE) to connect to a Wi-Fi AP using encrypted connection information obtained from a service server through DSRC.

1 is an example diagram showing each channel of IEEE 802.11p used in the present invention;
Figure 2 is a configuration diagram of an embodiment of a connected car service provision system according to the present invention;
Figure 3 is a configuration diagram of an embodiment of a vehicle-mounted device of the connected car service provision system according to the present invention;
Figure 4 is a flowchart of an embodiment of a method for providing a connected car service according to the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. Additionally, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. No.

Figure 2 is a configuration diagram of an embodiment of a connected car service provision system according to the present invention.

As shown in Figure 2, the connected car service provision system according to the present invention includes an AP (Access Point, 10), a vehicle-mounted device 20, a roadside device 30, a service server 40, and an AP connection. It may include an information database 50.

Looking at each of the above components, first, the AP 10 is a low-power wireless device that acts as a bridge between wired and wireless, and enables Wi-Fi connection of the vehicle-mounted device 20. For reference, Wi-Fi (Wireless Fidelity) refers to a short-distance communication network that provides wireless Internet services within a certain distance using radio waves from where the AP is installed.

A plurality of such APs 10 may be provided, and may include APs that have security settings and require entering an SSID and password when connecting, and APs that do not have security settings, allowing anyone to access them without restrictions.

The present invention provides a connected car service (for example, a large data streaming service) through a secured AP, by connecting to the secured AP without the user directly entering access information (SSID and password). to be provided.

The vehicle-mounted device 20 can operate in a DSRC mode that performs DSRC based on 802.11p and a Wi-Fi mode that performs Wi-Fi communication based on 802.11a/n. For reference, DSRC mode is an extension of Wi-Fi mode that uses the 5GHz frequency band, so switching between modes is possible. That is, the vehicle-mounted device 20 may operate in DSRC mode using one chipset (for example, an 802.11n chipset) or may operate in Wi-Fi mode. For example, while the vehicle is driving, the vehicle-mounted device 20 operates in DSRC mode to transmit and receive various information from the roadside device 30, and while the vehicle is stopped, it operates in IP mode and connects to the AP 10 to transmit large amounts of data. to be able to receive.

The vehicle-mounted device 20 activates the DSRC mode while driving. That is, the vehicle-mounted device 20 activates the DSRC mode and records the vehicle ID (e.g., vehicle identification number, vehicle number, etc.) and service subscription information (e.g., whether or not to subscribe to services such as a large data streaming service). After signing the electronic signature, the electronically signed subscription information (vehicle ID, service subscription information) is broadcast. In other words, electronically signed subscription information is broadcast through DSRC. This broadcasting process of electronically signed subscription information is preferably performed in a Wi-Fi service area.

For reference, an electronic signature is information in electronic form attached to or logically combined with an electronic document to indicate that the signer has signed the electronic document, and plays the same role as a personal seal. This electronic signature uses the public key method to obtain the hash value of the original and then grant a non-repudiation function to the hash value. For example, when the vehicle-mounted device 20 broadcasts subscription information, it obtains a hash value of the subscription information and then encrypts the hash value with its private key and sends it. Then, the service server 40 decrypts the encrypted hash value received through the roadside device 30 using the public key of the vehicle-mounted device 20 and compares it with the hashed subscription information. If the hash value decrypted in this way matches the hash value obtained from the received subscription information, it can be determined that the received subscription information is from the vehicle-mounted device 20 and has not been forged.

While the vehicle-mounted device 20 is operating in DSRC mode, the access information of the secure AP 10 is used to receive paid services such as large-capacity data streaming services from the service server 40 through the roadside device 30. receives. At this time, if the access information of the secure AP 10 is encrypted with the public key of the vehicle-mounted device 20, the vehicle-mounted device 20 can decrypt it with its own private key.

When the vehicle stops, the vehicle-mounted device 20 can use the decrypted access information to access the AP 10 without user intervention and receive paid services. Therefore, users can receive large-capacity data streaming services (videos, music, vehicle software updates, etc.) without the inconvenience of having to manually perform AP connection procedures.

The roadside device 30 is a type of base station that transmits and receives data with the vehicle-mounted device 20 through DSRC, and periodically transmits WAVE (Wireless Access in Vehicular Environment) beacons using CCH (Control CHannel) to provide channel information, etc. Because the information is provided, there is no need for the vehicle-mounted device 20 to perform a scanning operation.

This roadside device 30 receives subscription information electronically signed with a private key broadcast by the vehicle-mounted device 20 and transmits it to the service server 40, and uses the security-set AP received from the service server 40. The encrypted connection information is transmitted to the vehicle-mounted device (20).

In the present invention, the widely known roadside device 30 is used as an example, but it can also be implemented through a separate communication device (communication device separately implemented by the business operator) that is capable of DSRC and is connected wired/wireless to the service server 40. there is. In addition, it can be implemented through an AP (10) further equipped with a DSRC module as well as a Wi-Fi module.

The service server 40 is an entity that provides connected car services, and maintains a database 50 in which the AP connection information corresponding to each roadside device 30 and the service subscription information and public key of the vehicle-mounted device 20 are recorded. Equipped with This database 50 may be periodically updated by the service server 40.

This service server 40 confirms whether the vehicle-mounted device 20 is a customer subscribed to the service based on subscription information (vehicle ID, service subscription information) electronically signed with a private key. Please note that electronically signed subscription information is not encrypted and can be read by anyone.

The service server 40 does not provide AP connection information to vehicle-mounted devices 20 that are not subscribed to the service, but provides AP connection information encrypted with the corresponding public key to vehicle-mounted devices 20 that have subscribed to the service. At this time, the vehicle-mounted device 20 that is not subscribed to the service can automatically connect to the AP for which security is not set without a separate connection procedure and receive limited services.

The database 40 contains information (SSID) of a plurality of APs located around each roadside device 30, information (password) required to access the plurality of APs, and service subscription information (vehicle ID) of the vehicle-mounted device 20. , type of subscription service), and a public key corresponding to the vehicle-mounted device 20 (public key of the owner of the vehicle-mounted device).

Figure 3 is a configuration diagram of an embodiment of a vehicle-mounted device of a connected car service provision system according to the present invention.

As shown in FIG. 3, the vehicle-mounted device according to the present invention may include a communication unit 21, a control unit 22, and a storage unit 23. Depending on the method of implementing the invention, each component may be combined with each other and provided as one, and in addition, some components may be omitted depending on the method of implementing the invention.

Looking at each of the above components, first, the communication unit 21 may be implemented with an 802.11n chipset, for example, and may operate in DSRC mode or Wi-Fi mode under the control of the control unit 22.

This communication unit 21 can communicate with the roadside device 30 in DSRC mode to transmit and receive various information, and communicates with the AP 10 in Wi-Fi mode to receive connected car services that require high transmission speeds. .

The control unit 22 performs overall control so that each of the components can perform their functions normally. This control unit 22 may be implemented in the form of hardware or software, and may also exist in a form in which hardware and software are combined. Preferably, the control unit 22 may be implemented with a microprocessor, but is not limited thereto.

This control unit 22 can operate in a DSRC mode that performs DSRC based on 802.11p and a Wi-Fi mode that performs Wi-Fi communication based on 802.11a/n. That is, the control unit 22 may operate in DSRC mode using one chipset (for example, an 802.11n chipset) or may operate in Wi-Fi mode. For example, while the vehicle is driving, the control unit 22 operates in DSRC mode to transmit and receive various information from the roadside device 30 through the communication unit 21, and while the vehicle is stopped, it operates in IP mode to communicate with the communication unit 21. It is possible to receive large amounts of data by connecting to the AP (10).

The control unit 22 activates the DSRC mode while driving. That is, the control unit 22 activates the DSRC mode and electronically signs the vehicle ID (e.g., vehicle identification number, vehicle number, etc.) and service subscription information (e.g., whether or not to subscribe to services such as large data streaming service, etc.). After doing so, the electronically signed subscription information (vehicle ID, service subscription information) is broadcasted through the communication unit 21. In other words, electronically signed subscription information is broadcast through DSRC. This broadcasting process of electronically signed subscription information is preferably performed in a Wi-Fi service area.

The control unit 22, while operating in DSRC mode, receives access information of the AP 10 with security set for providing paid services such as large data streaming services from the service server 40 through the communication unit 21. . At this time, if the access information of the secure AP 10 is encrypted with a public key, the control unit 22 can decrypt it with its own private key.

The control unit 22 stores the AP connection information decrypted with its own private key in the storage unit 23. This storage unit 23 is of flash memory type, hard disk type, micro type, and card type (e.g., SD card (Secure Digital Card) or Memory such as eXtream Digital Card), RAM (Random Access Memory), SRAM (Static RAM), ROM (Read-Only Memory), PROM (Programmable ROM), EEPROM (Electrically Erasable PROM), and magnetic memory It may include at least one type of storage medium among (MRAM, Magnetic RAM), magnetic disk, and optical disk type memory.

When the vehicle stops, the control unit 22 uses the decrypted access information to connect to the AP 10 without user intervention to receive paid services. Therefore, users can receive large-capacity data streaming services (videos, music, vehicle software updates, etc.) without the inconvenience of having to manually perform AP connection procedures.

Figure 4 is a flowchart of an embodiment of a method for providing a connected car service according to the present invention.

First, the communication unit 21 obtains AP connection information from the roadside device in DSRC mode (401).

Afterwards, the storage unit 23 stores the obtained AP connection information (402).

Thereafter, the control unit 22 connects to the AP based on the obtained AP connection information in Wi-Fi mode and receives the connected car service (403).

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

10: AP
20: Vehicle-mounted device
21: Department of Communications
22: control unit
23: storage unit
30: Fireside device
40: service server
50: database

Claims (12)

A communication unit that communicates with a roadside device in a first communication mode and with an Access Point (AP) in a second communication mode;
A control unit that connects to the AP in a second communication mode based on AP access information obtained in the first communication mode and receives a connected car service; and
It includes a storage unit that stores the obtained AP connection information,
The control unit,
After electronically signing the subscription information including the vehicle ID and service subscription information through the first communication mode while the vehicle is running, the electronically signed subscription information is broadcast, and the electronically signed subscription information is broadcasted in the roadside device where security is not set. After obtaining the AP connection information, using the AP connection information obtained through the second communication mode while the vehicle is stopped, connects to the AP for which security is set without user intervention,
The first communication mode operates in a Dedicated Short Range Communications (DSRC) mode, and the second communication mode operates in a Wi-Fi mode. According to claim 1,
The control unit,
Receives AP access information encrypted with a public key from the service server that received the electronically signed subscription information, decrypts it with a private key, and connects to the AP based on the decrypted AP access information in the second communication mode. A vehicle-mounted device characterized by providing tid car service. According to claim 2,
The service server is,
A vehicle-mounted device comprising a database in which AP connection information corresponding to each roadside device, the service subscription information for each vehicle-mounted device, and the public key of each vehicle-mounted device are recorded. According to claim 3,
The service server is,
It is characterized by confirming whether the vehicle-mounted device has subscribed to the service based on the subscription information electronically signed with a private key, and providing AP access information encrypted with a public key corresponding to the private key to the vehicle-mounted device subscribed to the service. A vehicle-mounted device. delete delete According to claim 1,
The AP connection information is,
Vehicle-mounted device containing SSID (Service Set IDentifier) and password.
A communication unit obtaining access point (AP) connection information from a roadside device in a first communication mode;
A storage unit storing the acquired AP access information; and
A step where the control unit connects to the AP based on the obtained AP access information in a second communication mode and receives a connected car service,
The step of the control unit connecting to the AP based on the obtained AP access information in the second communication mode to provide a connected car service is,
electronically signing subscription information including a vehicle ID and service subscription information through the first communication mode while the vehicle is running, and then broadcasting the electronically signed subscription information; and
After obtaining the AP access information from the roadside device for which security is not set, the AP access information obtained through the second communication mode while the vehicle is stopped is used to connect to the secure AP without user intervention. Including the step of connecting,
A method of providing a connected car service in a vehicle-mounted device, wherein the first communication mode operates in a Dedicated Short Range Communications (DSRC) mode, and the second communication mode operates in a Wi-Fi mode. According to claim 8,
The method of providing the connected car service is,
Receiving AP access information encrypted with a public key from the service server that received the electronically signed subscription information and decrypting it with a private key; and
Step of receiving connected car service by connecting to AP based on the decrypted AP access information in the second communication mode
A method of providing a connected car service in a vehicle-mounted device including. According to claim 8,
The first communication mode is activated while the vehicle is running, and the second communication mode is activated while the vehicle is stopped.
Broadcast electronically signed subscription information in the first communication mode, receive AP access information encrypted with a public key from the service server, decrypt it with a private key, and based on the decrypted AP access information in the second communication mode. A vehicle-mounted device that connects to an AP and receives connected car services; and
Based on the electronically signed subscription information received from the vehicle-mounted device, whether the vehicle-mounted device is subscribed to the service is confirmed, and AP access information encrypted with a public key corresponding to the private key is provided to the vehicle-mounted device subscribed to the service. Including the service server that does,
The vehicle-mounted device is,
After electronically signing the subscription information including the vehicle ID and service subscription information through the first communication mode while the vehicle is running, the electronically signed subscription information is broadcast, and the service server for which security is not set. After obtaining the AP connection information from the vehicle, using the AP connection information obtained through the second communication mode while the vehicle is stopped, accesses the AP for which security is set without user intervention,
A connected car service providing system in which the first communication mode operates in DSRC (Dedicated Short Range Communications) mode, and the second communication mode operates in Wi-Fi mode. According to claim 11,
The service server is,
A connected car service provision system comprising a database in which AP connection information corresponding to each roadside device, service subscription information for each vehicle-mounted device, and public key for each vehicle-mounted device are recorded.

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