Roadside device

Abstract

To provide a roadside machine capable of cooperating with an external service associated with personal information of a moving body user.SOLUTION: The roadside machine 10 includes the sensor 11 that detects the behavior of the moving object 20, and the wireless communication unit 12 that receives the identification information and the behavior history from the moving object 20, and the wireless communication unit 12 further receives the personal information of the user of the moving object 20 from the moving object 20 when a condition including a predetermined correlation between the received behavior history and the detection result of the sensor is satisfied.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a roadside unit. [Background technology]

[0002] In recent years, roadside devices capable of communicating with vehicles have been developed. For example, Patent Document 1 discloses a technology in which a roadside device includes a communication unit and a control unit, and performs wireless communication with vehicles traveling on the main lane or merging lane of a road, receives on-board device identification information of an on-board device mounted on the vehicle and appearance information related to the vehicle's appearance, and compares the sensing information of the roadside device with the appearance information received through communication. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2022-164499 Summary of the Invention [Problem to be solved by the invention]

[0004] The on-board unit identification information, which identifies the on-board unit, is a unique value and therefore does not overlap with the on-board unit identification information of other vehicles. However, when the ignition is turned off and on and the on-board unit system is restarted, the on-board unit identification information is changed to a different number from the original number. Therefore, the on-board unit identification information cannot be used to identify the driver. Furthermore, technologies such as ITS (Intelligent Transport Systems)-Connect, which are used for wireless communication with vehicles, use a broadcast method of communication, so in principle, it is not possible to include personally identifiable information directly in wireless communication messages. Therefore, it is not possible to include and send personal information of mobile users (e.g., the mobile user's user ID or user name in external services) directly in wireless communication messages for the purpose of linking with external services linked to driver information.

[0005] Therefore, conventional roadside units were unable to identify the user (driver) of a moving object, and it was also difficult to link the information acquired through wireless communication with the vehicle to external services linked to the user's personal information using the vehicle-mounted unit identification information.

[0006] In view of the above circumstances, an object of the present disclosure is to provide a roadside unit that can cooperate with an external service linked to personal information of a mobile user. [Means for solving the problem]

[0007] The gist of the present disclosure for solving the above problems is as follows.

[0008] (1) A roadside device comprising a sensor that detects the behavior of a moving object and a wireless communication unit that receives identification information and a behavior history from the moving object, wherein the wireless communication unit further receives personal information of the user of the moving object from the moving object when a condition is satisfied, including that the received behavior history and the detection result of the sensor have a predetermined correlation.

[0009] (2) A roadside device according to (1), further comprising a control unit that starts an application when the condition is met, and the wireless communication unit that sends a message specified in the application to the mobile body with the identification information as the destination.

[0010] (3) The roadside device according to (2), wherein the wireless communication unit receives encrypted personal information of a user of the mobile body from the mobile body when the application requests personal information.

[0011] (4) The roadside device according to (3), wherein the personal information is a user ID of a user of the mobile object, which is required when using the application.

[0012] (5) The roadside device according to any one of (1) to (4), wherein the moving body is a vehicle, and the identification information is identification information of an on-board device mounted on the moving body. [Effects of the Invention]

[0013] According to the present disclosure, it is possible to link with external services linked to personal information of mobile users. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of a communication system according to an embodiment. [Figure 2] 10 is a flowchart illustrating an example of a processing procedure of a roadside device according to an embodiment. [Figure 3] 10 is a flowchart illustrating an example of a processing procedure of a moving body according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] 1 includes a roadside device 10, one or more mobile objects 20, and a server 40 connected to a communication network 30 such as the Internet. The server 40 may be a database server.

[0016] The roadside device 10 is attached to a pole such as a traffic light or a utility pole. The roadside device 10 includes a sensor 11, a wireless communication unit 12, a communication unit 13, and a control unit 14.

[0017] The sensor 11 senses the surrounding environment and detects the behavior of the moving object 20. The sensor 11 may be a visible light camera, an infrared camera, a LiDAR, or the like, and the type of sensor is not limited. The sensor 11 may also be configured with multiple sensors.

[0018] The wireless communication unit 12 communicates with the mobile body 20 and receives identification information and a behavior history. The identification information is, for example, identification information of an on-board device mounted on the mobile body 20. The behavior history is, for example, a history of location information. When a condition is satisfied, including a predetermined correlation between the received behavior history and the detection result of the sensor 11 (for example, the behavior histories are approximately identical), the wireless communication unit 12 further receives personal information of the user of the mobile body 20 from the mobile body 20.

[0019] The communication unit 13 is connected to the communication network 30 wirelessly or via a wired connection, and communicates with the server 40 .

[0020] The control unit 14 starts a predetermined application when a condition is satisfied, including a predetermined correlation between the behavior history received by the wireless communication unit 12 and the result detected by the sensor 11. The wireless communication unit 12 transmits a message specified by the application to the mobile object 20, with the identification information as the destination. When the application requests personal information, the wireless communication unit 12 receives encrypted personal information of the user of the mobile object 20 from the mobile object 20. The personal information is, for example, the user ID of the user of the mobile object 20, which is required when using the application.

[0021] The mobile object 20 is a vehicle such as an automobile, truck, or bus. The mobile object 20 includes a V2X (Vehicle to X) wireless communication unit 21 and a control unit 22 that processes communication information. The mobile object 20 may further include an HMI (Human Machine Interface) unit that provides information to the driver based on information processed by the control unit 22.

[0022] <Roadside unit processing> The processing of the roadside unit 10 will be described with reference to Fig. 2. When the roadside unit 10 detects a nearby moving object 20 using the sensor 11 (S101-YES) and communicates with the moving object 20 using the wireless communication unit 12 (S102-YES), the control unit 14 compares the behavior history obtained through communication with the sensed behavior history (S103). When the roadside unit 10 does not communicate with the moving object 20 (S102-NO), the roadside unit 10 may do nothing or may upload the information about the moving object 20 sensed in S101 (type, behavior, etc.) to the server 40 (S104). When the behavior histories match (S105-YES), the control unit 14 associates the identification information of the moving object 20 (for example, on-board device identification information). Hereinafter, when the moving object 20 identified in S105 is to be distinguished from other moving objects 20, it will be referred to as moving object 20a.

[0023] The control unit 14 analyzes and identifies the behavior of the identified mobile unit 20a (S106). If the behavior type does not satisfy a certain condition (NO in S107), the control unit 14 may terminate the process. If the behavior type satisfies a certain condition (YES in S107), the control unit 14 launches an application that meets the condition. If the launched application requests a response and the response message contains information that would be inappropriate for reception by anyone other than the roadside unit 10 and the mobile unit 20 (information that cannot be in plain text), the control unit 14 generates encryption information (e.g., a public key) required for the mobile unit 20a to encrypt the response information into a format that cannot be decrypted by communication recipients other than the roadside unit 10 and the mobile unit 20a, and includes the encryption information in the transmitted message (S108). The control unit 14 also generates decryption information (e.g., a private key) that can decrypt the response information, and stores the decryption information in a storage unit (not shown) of the roadside unit 10 (S108). Note that the "encryption" in S108 is different from the encryption of the V2X wireless communication itself, and is encryption performed to further conceal some of the information included in the wireless communication message from media capable of receiving other V2X wireless communications received via broadcast communication.

[0024] The wireless communication unit 12 transmits the message specified by the application to the mobile unit 20a (S109). By specifying the identification information of the mobile unit 20a as the transmission destination, the wireless communication unit 12 excludes post-reception processing of other mobile units 20 that can receive V2X wireless communication in the vicinity, and ensures that the transmitted message reaches only the mobile unit 20a. In addition, the wireless communication unit 12 sets a flag for identifying the type of the launched application (hereinafter referred to as an "application identification flag") in the transmitted message, allowing the receiver to identify the launched application. Some transmitted messages request a response from the mobile unit 20a.

[0025] When the wireless communication unit 12 receives a response message from the mobile unit 20 (S110), the control unit 14 checks the identification information included in the response message, and if it matches the transmission destination (S111-YES), it recognizes that the mobile unit 20 is the identified mobile unit 20a. If the response message includes encrypted plaintext unacceptable information (ciphertext), the control unit 14 decrypts the plaintext unacceptable information using the decryption information saved in S108 (S112). The control unit 14 then associates the behavior analysis information with the plaintext unacceptable information (S113). The control unit 14 may further associate the behavior analysis information with the identification information of the mobile unit 20a. The control unit 14 checks the application identification flag included in the response message, and the communication unit 13 stores data corresponding to the application in a database of the corresponding server 40 via the communication network 30 (S114).

[0026] <Mobile object> The processing of the mobile object 20 will be described with reference to Fig. 3. The V2X wireless communication unit 21 receives wireless communication from the roadside device 10 (S201). If the received information includes identification information that is a transmission destination, the control unit 22 compares the information with its own identification information (S202). If the two match (S202-YES), the communication is addressed to the mobile object 20 and the process proceeds. If the two do not match (S202-NO), the received information is discarded (S203). If the information received in S201 does not include a transmission destination, the mobile object 20 performs reception processing of the broadcast communication. That is, the mobile object 20 does not perform the subsequent processing, but does not discard the received information either.

[0027] If an application identification flag is set in the received information, the control unit 22 reads the flag and starts the application corresponding to the flag (S204).

[0028] If the started application requests a response from the roadside device 10 (S205-YES), the control unit 22 determines whether the response content includes flat separation unsuccessful information (S206). If the started application does not request a response from the roadside device 10 (S205-YES), the control unit 22 performs processing according to the instructions of the application.

[0029] If the response content includes unsegmentable information (S206-YES), the control unit 22 encrypts the unsegmentable information using encryption information included in the message received from the roadside device 10 (S207). Then, the V2X wireless communication unit 21 includes the encrypted unsegmentable information (ciphertext) in a response message, specifies the communication device identification information of the roadside device 10 as the transmission destination, and transmits the response message (S208). By performing the process of S207, it becomes possible to transmit the unsegmentable information to the roadside device 10 while concealing the unsegmentable information from other media capable of receiving V2X wireless communication that broadcast and receive the unsegmentable information.

[0030] By performing the above processing, the roadside unit 10 can recognize personal information that can identify the user of the mobile unit 20, rather than the vehicle unit identification information that normally changes every time the vehicle unit of the mobile unit 20 is started up, and can store this information in a database while linking it to the behavior information of the mobile unit 20, making it possible to link the mobile unit behavior information to various external services, which was previously difficult.

[0031] When encryption information is included in a message sent from the roadside unit 10, any encryption method may be used, and for example, public key cryptography may be adopted. The private key and public key may be issued by edge computing using the control unit 14, or may be calculated using computing resources on the Internet via Internet communication from the roadside unit 10 via optical fiber.

[0032] Alternatively, a hybrid key encryption method may be adopted. In this case, it is conceivable that the roadside device 10 issues a public key and the mobile unit 20 issues a common key. In this case, a method is conceivable in which the roadside device 10 includes in the first transmitted message a request to the mobile unit 20 to issue a common key for the hybrid key encryption method, which triggers the mobile unit 20 to issue the common key.

[0033] The present invention can be applied to a point-granting service that grants points to a mobile object user according to the type of mobile object, the behavior of the mobile object, etc. (for example, a service that grants points when the user behaves in a legally compliant manner). An example of this is described below.

[0034] In S108, the roadside device 10 generates encryption information for having personal information (user name and user ID) used when using the point-granting service included in a response message, and decryption information for decrypting the encrypted personal information. Then, in S109, the roadside device 10 includes the encryption information and an application identification flag for activating the point-granting service in a transmission message, and transmits the message via V2X wireless communication with the identification information of the moving object 20a as the transmission destination.

[0035] In S207, the mobile unit 20a encrypts the personal information required to use the point-granting service using the encryption information included in the received message, and in S208, the mobile unit 20a transmits the encrypted personal information in a response message to the roadside unit 10 via V2X wireless communication.

[0036] When the roadside device 10 recognizes in S111 that the received V2X wireless communication information is a response message from the moving object 20a, in S112, it decrypts the encrypted personal information included in the response message using the decryption information.

[0037] In S114, the roadside device 10 stores the decrypted personal information, together with information such as behavior information or behavior type acquired by sensing the mobile object 20a, in a database of the server 40 of the point-giving service via Internet communication. The point-giving service awards points to the user of the mobile object 20a based on the stored information.

[0038] After completing driving, the user of the mobile unit 20a can log in to the user client application provided by the point-granting service and check the points awarded from the information stored in the database of the server 40 while driving the mobile unit 20a.

[0039] In conventional services such as automobile insurance, there is a technology that equips vehicles with a dedicated device and stores certain vehicle data in a database to be used for things like safe driving scores for vehicle insurance. However, this technology requires one dedicated device per application. In contrast, the present invention does not require a dedicated device and allows for developments such as linking data to multiple applications at once.

[0040] In this way, the roadside unit 10 identifies the mobile unit 20 that has performed a predetermined behavior from both the perspectives of sensing and communication, and further converts the personal information of the mobile unit 20 into highly confidential information that can only be deciphered between the mobile unit 20 and the roadside unit 10, and transmits and receives this information via wireless communication between the roadside unit 10 and the mobile unit 20. This makes it possible to identify and link the behavior of the mobile unit 20 with personal information requested by an external application, and to develop services. In other words, the roadside unit 10 can link the mobile unit 20, the behavior of the mobile unit 20, and the personal information of the user of the mobile unit 20, and therefore can link with external services linked to the personal information of the user of the mobile unit 20.

[0041] Although the above-described embodiments have been described as typical examples, it will be apparent to those skilled in the art that modifications and substitutions can be made within the spirit and scope of the present invention. For example, it is possible to combine multiple steps shown in the flowcharts of the embodiments into one, or to divide one step. [Explanation of symbols]

[0042] 1: communication system, 10: roadside unit, 11: sensor, 12: wireless communication unit, 13: communication unit, 14: control unit, 20: mobile object, 21: wireless communication unit, 22: control unit, 30: communication network, 40: server

Claims

1. A sensor that detects the behavior of a moving object; a wireless communication unit that receives identification information and a behavior history from the moving object, The roadside unit further receives personal information of a user of the mobile body from the mobile body when the wireless communication unit satisfies a condition including that the received behavior history and the detection result of the sensor have a predetermined correlation.

2. a control unit that starts an application when the condition is satisfied; The roadside device according to claim 1 , wherein the wireless communication unit transmits a message designated by the application to the mobile object, with the identification information as a destination.

3. The roadside device according to claim 2 , wherein the wireless communication unit receives encrypted personal information of a user of the mobile object from the mobile object when the application requests the personal information.

4. The roadside device according to claim 3 , wherein the personal information is a user ID of a user of the mobile object, which is required when using the application.

5. The roadside device according to claim 1 , wherein the moving body is a vehicle, and the identification information is identification information of an on-board device mounted on the moving body.

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