JP6331714B2 - COMMUNICATION METHOD, ROAD SIDE DEVICE, MOBILE COMMUNICATION DEVICE, VEHICLE, VEHICLE CONTROL DEVICE, AND VEHICLE OPERATION DETERMINING METHOD - Google Patents

Description

  The present invention relates to a communication method for transmitting and receiving communication frames between wireless communication devices, a roadside device for performing the communication method, a mobile communication device for performing the communication method, a vehicle for performing the communication method, a vehicle control device, and an operation of the vehicle. Regarding the determination method.

Currently, development of automatic driving technology for automobiles is actively performed. Although it is difficult to clearly classify automatic driving of automobiles, it can be roughly divided into support driving in which a vehicle control system supports driving by a passenger and autonomous driving capable of completely unattended driving.
There are various types of assisted driving, for example, control that travels along the road (Patent Document 1), and control the amount of operation of the accelerator and brake so that the command vehicle speed is achieved (Patent Document 2). There is one that performs control to maintain the inter-vehicle distance from the preceding vehicle (Patent Document 3).

  As a conventional example of autonomous driving, there is a technique described in Patent Document 4, for example. In this conventional autonomous driving, the vehicle is driven along the route searched by the navigation system, and the behavior of surrounding objects sensed by sonar during the traveling is predicted to avoid the object that is likely to perform the predicted behavior. The operation to perform is performed on the own vehicle.

JP 2011-162132 A JP 2013-244838 A JP 2014-046748 A Special table 2013-544696 gazette

As the development of automatic driving technology progresses, it is expected that the presence rate of vehicles for assisting driving and vehicles for autonomous driving will increase with respect to conventional manually driving vehicles.
In a traffic situation in which vehicles having different operation modes are mixed (hereinafter sometimes referred to as “mixed situation”), as the number of vehicles for autonomous driving (especially autonomous driving) increases, appropriate traffic of the vehicles is reduced. May be disturbed. For example, it is considered that at least one of the following problems may occur.

1) When an autonomous driving vehicle running unattended is encountered, the driver of another vehicle may be surprised or anxious, and the possibility of causing an accident increases.
2) When an unmanned autonomous driving vehicle and another vehicle on which the driver is on board share a parking space, if the unattended autonomous driving vehicle parks first without reserve, the dissatisfaction of the driver of the other vehicle increases. It is not preferable in terms of parking management.
3) When an autonomous driving vehicle cannot accurately detect a pedestrian, there is an increased possibility of a personal injury caused by the autonomous driving vehicle.

  Therefore, an object of the present invention is to provide a communication technique that contributes to the realization of appropriate traffic by each mobile body in a traffic situation in which mobile bodies having different operation modes coexist.

(1) A communication method according to an aspect of the present invention is a communication method for wirelessly transmitting and receiving a communication frame, wherein the communication frame includes a storage area for defining an operation mode of the mobile body. The information stored in the communication method includes the following mode type identification information.
Manual driving: Mode type in which the passenger performs all driving of the own vehicle Automatic driving: Mode type in which the vehicle control system automatically performs part or all of the driving of the own vehicle

  (18) A control device according to an aspect of the present invention is a vehicle control device that determines an operation content of a host vehicle based on the content of a communication frame generated by another mobile body, and the other mobile body The operation content of the host vehicle is determined based on a comparison between the communication unit that receives the communication frame including the mode type generated by the vehicle and the mode type of the host vehicle and the mode type included in the received communication frame. A control unit.

  (19) An operation determination method according to an aspect of the present invention is a vehicle operation determination method for determining the operation content of a host vehicle based on the content of a communication frame generated by another mobile body. The operation content of the host vehicle is determined based on the step of receiving the communication frame including the mode type generated by the mobile body and the comparison between the mode type of the host vehicle and the mode type included in the received communication frame. Including the steps of:

  (21) A roadside apparatus according to an aspect of the present invention is a roadside apparatus that determines whether or not a mobile object enters or leaves a parking area, and the mode type of the mobile object, the type of parking state, the type and position of the parking area. A communication unit that receives the communication frame including information, and based on the information included in the received communication frame, determines whether or not the mobile object is allowed to enter the dedicated area for automatic driving, and the determination result A control unit that causes the communication unit to transmit a control frame addressed to the mobile body.

  (27) A roadside apparatus according to an aspect of the present invention is a roadside apparatus that determines a charging priority of a moving body, and includes the communication frame including whether or not the moving body needs to be charged, a scheduled shipping time, and a desired charging amount. Based on the received communication unit and the information included in the received communication frame, the charging priority of the mobile unit is determined, and a control frame addressed to the mobile unit including the determination result is transmitted to the communication unit. A control unit.

  ADVANTAGE OF THE INVENTION According to this invention, in the traffic condition where the mobile body from which an operation mode differs is mixed, it can contribute to realization of the appropriate passage by each mobile body.

It is a perspective view which shows an example of the parking lot which employ | adopted the radio | wireless communications system which concerns on embodiment of this invention. It is explanatory drawing of the combination of the communication main body in a radio | wireless communications system. It is a block diagram which shows the structural example of the management system of a parking lot. It is a block diagram which shows the structural example of the control system of an autonomous driving vehicle. It is a block diagram which shows the structural example of the control system of assistance driving vehicle. It is a block diagram which shows the structural example of the control system of a manually operated vehicle. It is a block diagram which shows the structural example of a portable terminal. It is explanatory drawing which shows an example of the frame format of a communication frame. It is a flowchart of the information transmission control which a mobile communication apparatus performs. It is a flowchart of the safety assistance control which a vehicle-mounted communication apparatus performs. It is a flowchart of the safety assistance control which a roadside communication apparatus performs. It is a flowchart of the warehousing management control which a roadside communication apparatus performs. It is a flowchart of the leaving management control which a roadside communication apparatus performs. It is a flowchart of the determination control of the charging order which a management apparatus performs.

<Outline of Embodiment of the Present Invention>
Hereinafter, an outline of embodiments of the present invention will be listed and described.
(1) The communication method of the present embodiment is a communication method for wirelessly transmitting and receiving communication frames, and a storage area for defining an operation mode of a mobile object is included in the communication frame and is stored in the storage area. The information includes the following mode type identification information.
Manual driving: Mode type in which the passenger performs all driving of the own vehicle Automatic driving: Mode type in which the vehicle control system automatically performs part or all of the driving of the own vehicle

According to the communication method of the present embodiment, the storage area for defining the operation mode of the mobile object is included in the communication frame, and the information stored in the storage area includes the above-described manual operation and automatic operation. The mobile body on the receiving side of the communication frame can detect through wireless communication whether the mode type of the mobile body on the transmitting side is manual operation or automatic operation.
For this reason, automatic driving achieves appropriate traffic by each moving body in a traffic situation where moving bodies with different operation modes coexist by setting predetermined rules such as giving way to manual driving. be able to.

(2) In the communication method of this embodiment, it is preferable that the information stored in the storage area includes the following mode type identification information obtained by subdividing the automatic driving.
Autonomous driving: A mode type in which the vehicle control system automatically performs all of the driving of the own vehicle. Assisted driving: The vehicle control system automatically performs a part of the driving of the own vehicle and allows the passenger to drive the own vehicle. Supported mode types

In this case, since automatic driving is subdivided into autonomous driving and support driving, whether the mobile body on the receiving side of the communication frame is in the operation mode of manual transmission, support driving or automatic driving on the transmitting mobile body Can be detected by wireless communication.
For this reason, compared with the case where automatic driving is not subdivided, the traffic rules according to the mode types can be defined in more detail. Accordingly, it is possible to more surely realize appropriate passage of each moving body in the mixed situation.

(3) In the communication method of the present embodiment, it is preferable that the information stored in the storage area further includes the following mode type identification information.
Pedestrian movement: A mode type indicating that a mobile object that is a pedestrian is moving

In this case, since the pedestrian movement is included in the information stored in the storage area for defining the operation mode of the mobile body, the mobile body on the transmission side moves as the mobile body on the reception side of the communication frame. You can detect whether you are a pedestrian or not.
For this reason, a vehicle can always include a pedestrian in a traffic rule according to the mode type, such as giving way to a moving body of pedestrian movement. Accordingly, it is possible to more surely realize appropriate passage of each moving body in the mixed situation.

  (4) In the communication method of the present embodiment, a storage area for defining attributes of the driver of the mobile object is included in the communication frame, and information stored in the storage area includes the driver of the mobile object. It is preferable that identification information on whether or not is a traffic weak person is included.

In this case, a storage area for defining the attribute of the driver of the mobile object is included in the communication frame, and the information stored in the storage area includes identification information as to whether or not the driver of the mobile object is a traffic weak person. Therefore, the mobile body on the receiving side of the communication frame can detect whether or not the driver of the mobile body on the transmitting side is a traffic weak person by wireless communication.
For this reason, even if the operation mode is the same as that of the host vehicle, it can be included in the rules for passing the concept of the vulnerable person, such as giving up the road if the driver is a vulnerable person. Accordingly, it is possible to more surely realize appropriate passage of each moving body in the mixed situation.

  (5) In the communication method of the present embodiment, a storage area for defining the presence or absence of a passenger of the mobile object is included in the communication frame, and the information stored in the storage area includes the passenger or It is preferable that identification information indicating whether there is none is included.

In this case, a storage area for defining the presence / absence of a passenger on the mobile body is included in the communication frame, and information stored in the storage area includes identification information indicating whether the passenger is present or absent. Therefore, the mobile body on the receiving side of the communication frame can detect by radio communication whether there is a passenger on the transmitting side mobile body.
For this reason, when the operation modes are autonomous driving with each other, a vehicle without a passenger can be included in the passing rules such as a vehicle without a passenger giving way. Accordingly, it is possible to more surely realize appropriate passage of each moving body in the mixed situation.

(6) In the above description, it is assumed that the communication frame receiving side is a mobile body. However, when the roadside device receives the communication frame (for example, in the case of road-to-vehicle communication), the roadside device also It is preferable to include useful information in the communication frame.
Therefore, in the communication method of the present embodiment, a storage area for defining the parking state of the mobile body is included in the communication frame, and the information stored in the storage area includes the mobile body moving or parked. It is preferable that identification information as to which of these is included.

In this case, a storage area for defining the parking state of the mobile object is included in the communication frame, and the information stored in the storage area includes identification information indicating whether the mobile object is moving or parked. Therefore, the roadside device that has received the communication frame can detect whether the mobile body on the transmission side is moving or parked by wireless communication.
For this reason, for example, when the roadside device that manages the parking lot detects in advance whether the moving body is moving or parked, the information of the communication frame can be used for the management of the parking lot.

  (7) For the same reason, a storage area for defining a parking area of the mobile object is included in the communication frame, and the information stored in the storage area indicates that the area where the mobile object is to be parked is autonomous. It is preferable that identification information as to whether it is a dedicated area for driving or a mixed area that is not so is included.

In this case, a storage area for defining the parking area of the mobile body is included in the communication frame, and the information stored in the storage area is a dedicated area for autonomous driving or a mixed area where the mobile body is planned to be parked. Since the identification information as to which one of the areas is included is included, the roadside device that has received the communication frame can detect whether the parking area of the transmitting mobile body is a dedicated area or a mixed area by wireless communication.
For this reason, for example, when the roadside device that manages the parking lot senses in advance whether the parking area of the moving object is a dedicated area or a mixed area, the information of the communication frame can be used for the management of the parking lot.

  (8) For the same reason, a storage area for defining whether or not the mobile body needs to be charged is included in the communication frame, and the information stored in the storage area does not require or need to charge the mobile body. It is preferable that identification information as to which one is included.

In this case, a storage area for defining whether or not charging for the moving object is necessary is included in the communication frame, and information stored in the storage area includes identification information indicating whether charging for the moving object is necessary or unnecessary. Therefore, the roadside apparatus that has received the communication frame can detect the necessity of charging the mobile body on the transmission side through wireless communication.
For this reason, for example, the roadside device that manages the charging facility detects in advance whether or not the mobile body needs to be charged, so that information on the communication frame can be used for managing the charging facility.

  (9) A roadside apparatus according to the present embodiment is a roadside apparatus that performs the above-described communication method, and receives the communication frame in which predetermined identification information is stored in one or a plurality of the storage areas from the mobile body. A communication unit that transfers the received communication frame to another mobile unit.

  According to the roadside device of the present embodiment, the communication unit transfers the received communication frame to another mobile body, so that the mobile body in a positional relationship where communication between the mobile bodies (for example, vehicle-to-vehicle communication) is not possible, Other mobile communication frames can be passed. Therefore, it is possible to more reliably realize appropriate traffic using the communication frame.

  (10) The mobile communication device of the present embodiment is a mobile communication device that performs the above-described communication method, and the identification that should be stored in one or a plurality of the storage areas for the mobile body equipped with the mobile communication device. A control unit that determines information, stores the determined identification information in the corresponding storage area, and generates the communication frame; and a communication unit that transmits the generated communication frame to another device.

According to the mobile communication device of the present embodiment, since the generated communication frame is transmitted to another device, the communication frame including the mode type of the transmission source mobile unit is transmitted to the outside.
Therefore, the transmitted communication frame can be used by the receiving mobile unit to determine its own behavior, or the receiving side roadside device can be used for parking management for the transmitting mobile unit. Become.

  (11) The vehicle control device according to the present embodiment (the “vehicle communication device 54” shown in FIGS. 4 to 6 or the “control system 50” shown in FIG. 6) may be used. A vehicle control apparatus that performs the communication method described above, wherein the identification information to be stored in one or a plurality of the storage areas is determined for the host vehicle, and the determined identification information is stored in the corresponding storage area. A control unit that generates the communication frame, and a communication unit that transmits the generated communication frame to another device.

According to the vehicle control device of the present embodiment, the generated communication frame is transmitted to another device, so that a communication frame including the mode type of the transmission source vehicle is transmitted to the outside.
For this reason, the transmitted communication frame can be used for the mobile unit on the receiving side to determine its own behavior, and the roadside device on the receiving side can be used for parking management for the vehicle on the transmitting side. .

  (12) In the vehicle control apparatus according to the present embodiment, the communication unit can receive the communication frame generated by the other moving body, and the control unit receives the mode type of the host vehicle and the received mode type. It is preferable to determine the operation content of the host vehicle based on a comparison with the mode type included in the communication frame.

  According to the vehicle control apparatus of the present embodiment, the control unit determines the operation content of the own vehicle based on the comparison between the mode type of the own vehicle and the mode type included in the received communication frame. By predetermining predetermined rules such as lowering the priority of traffic than manual driving, it is possible to realize appropriate traffic of the host vehicle in a traffic situation in which moving bodies having different operation modes coexist.

  (13) In the vehicle control device according to the present embodiment, the control unit determines, by the comparison, which one of the own vehicle and the other moving body has the higher priority of travel, and the other moving body. When the traffic priority is higher, it is preferable to execute at least one of control for notifying the driver of the host vehicle to that effect and control for suppressing travel of the host vehicle.

In this case, since the control unit executes at least one of the above-described controls, it is possible to suppress the traffic of the host vehicle when the traffic priority of the opponent mobile body is high.
For this reason, in the traffic situation where the moving body from which an operation mode differs is mixed, the suitable traffic of the own vehicle is realizable.

(14) Specifically, when the following mode type is included in the mode type used for determining the traffic priority, the control unit moves in the order of manual driving> support driving> autonomous driving. It is determined that the body passage priority is high.
Manual driving: Mode type in which the passenger performs all driving of the own vehicle Assisted driving: Mode type in which the vehicle control system automatically performs part of the driving of the own vehicle and supports the driving of the own vehicle by the passenger Autonomous Driving: A mode type in which the vehicle control system automatically performs all driving of the vehicle.

  The reason why the driving priority of autonomous driving is lowest is as follows. That is, in this case, the autonomously driven vehicle always gives way to the other party's moving body, and the possibility that an occupant of another moving body feels anxiety and causes an accident is reduced. In addition, assuming traffic in a parking lot, the possibility of accelerating or unloading other moving objects on which passengers are riding increases, leading to an improvement in customer satisfaction.

  In addition, the reason why the priority of manual driving is higher than the priority of assisting driving is that, for example, assuming driving in a parking lot, the moving body of supporting driving has the presence of other moving objects compared to the moving body of manual driving. It is easy to predict the behavior in advance, and there is a high possibility of avoiding a collision. Therefore, if the moving body in support driving considers the moving body in manual driving and raises the priority of passing in manual driving, the probability of a collision accident in manually moving mobile body decreases, and indirectly smoother. Enable driving. For this reason, it is because the possibility that the entering or leaving of the parking lot is accelerated increases as a whole, leading to improvement of customer satisfaction.

(15) In the vehicle control apparatus according to the present embodiment, the mode type used for determining the priority of travel includes the following mode type, and the control unit moves the mode type as pedestrian movement. It is preferable to determine that the body passage priority is the highest.
Pedestrian movement: A mode type that indicates that a moving body that is a pedestrian is moving. The reason is that the mode type is pedestrian movement in order to improve the safety of traffic for pedestrians who are representative of traffic weak people. This is because the traffic priority of the mobile body that is the highest should be set.

(16) In the vehicle control device according to the present embodiment, the information used for determining the pass priority includes the attribute of the driver of the mobile object, and the control unit has the attribute of the driver as a traffic weak. It is preferable that the determination condition as to which of the traffic priority of the own vehicle and the other moving body is higher is determined.
In this way, accident prevention can be achieved more effectively by prioritizing the passage of vehicles driven by traffic weak persons (for example, elderly people) who are immature in driving.

  (17) The vehicle of this embodiment is also a vehicle equipped with the above-described control device. Therefore, the vehicle of this embodiment has the same operational effects as the above-described control device.

  (18) The vehicle control device of the present embodiment viewed from another viewpoint is a vehicle control device that determines the operation content of the host vehicle based on the content of the communication frame generated by another mobile body, Based on a comparison between the communication unit that receives the communication frame including the mode type generated by the other moving body and the mode type of the host vehicle and the mode type included in the received communication frame, A control unit for determining the operation content.

  According to the vehicle control apparatus of the present embodiment, the control unit determines the operation content of the own vehicle based on the comparison between the mode type of the own vehicle and the mode type included in the received communication frame. By predetermining predetermined rules such as lowering the priority of traffic than manual driving, it is possible to realize appropriate traffic of the host vehicle in a traffic situation in which moving bodies having different operation modes coexist.

  (19) The operation determination method of the present embodiment is an operation determination method executed in the above-described control device. Therefore, the vehicle of this embodiment has the same operational effects as the above-described control device.

  (20) (21) The roadside device of this embodiment viewed from another point of view is a roadside device that determines whether or not a moving body is allowed to enter the parking area, and the mode type of the moving body, the type of parking state, Based on the communication unit that receives the communication frame including the type and location information of the parking area, and the information included in the received communication frame, whether or not the mobile object is allowed to enter the dedicated area for automatic driving is determined. And a control unit that causes the communication unit to transmit a control frame addressed to the mobile body that includes the determination result.

According to the roadside device of the present embodiment, the control unit determines whether or not to allow the vehicle to enter the exclusive area for autonomous driving based on the mode type of the moving body, the type of the parking state, the type of the parking area, and the position information. judge.
Therefore, the warehousing management to the exclusive area of the vehicle which is an automatic driving | operation can be performed automatically, and the operating cost of a parking lot can be reduced.

(22) Specifically, when the following conditions a1 to d1 are satisfied, the control unit includes the entry permission to the dedicated area in the control frame.
Condition a1: The mode type of the moving body is autonomous driving. Condition b1: The parking state type of the moving body is moving. Condition c1: The parking area type of the moving body is a dedicated area for automatic driving. Condition d1: The position information of the moving body is just before the entrance to the dedicated area.

  The reason is that if all of the above conditions a1 to d1 are all prepared, it can be determined that the vehicle in autonomous operation has reached its doorway to enter the dedicated area.

(23) In the roadside apparatus of the present embodiment, it is preferable that the control unit includes an agility operation command that does not consider passenger comfort in the control frame.
In this way, an autonomously operated vehicle performs operations such as acceleration / deceleration in the dedicated area more quickly than in the mixed area, and there is an advantage that the time required for warehousing in the dedicated area can be shortened.

(24) In the roadside apparatus of the present embodiment, the control unit includes the determination result of permission to leave the dedicated area in the control frame when the following conditions a2 to c2 are satisfied.
Condition a2: The mode type of the moving body is autonomous driving. Condition b2: The parking state type of the moving body is moving. Condition c2: The position information of the moving body is near the exit of the dedicated area.

  The reason is that if all of the above conditions a2 to c2 are prepared, it can be determined that the vehicle in autonomous operation has reached the doorway in order to leave the dedicated area.

(25) In the roadside apparatus according to the present embodiment, it is preferable that the control unit includes a command release of an agility operation that does not consider passenger comfort in the control frame.
In this way, the autonomous driving vehicle does not perform the agile operation such as acceleration / deceleration that was performed in the dedicated area in the mixed area, so the time required for leaving in the dedicated area is reduced and the traffic in the mixed area is reduced. Safety can be increased.

  (26) (27) The roadside communication device of this embodiment viewed from another point of view is a roadside device that determines the charging priority of the moving body, and whether or not the mobile body needs to be charged, scheduled delivery time, and charging request A communication unit that receives the communication frame including the amount, and based on the information included in the received communication frame, the charging priority of the mobile body is determined, and the control for the mobile body including the determination result A control unit that causes the communication unit to transmit a frame.

According to the roadside device of the present embodiment, the control unit determines the charging priority of the vehicle based on the necessity of charging, the scheduled delivery time, and the desired charging amount included in the communication frame, and includes the determination result. Is transmitted to the vehicle that is the transmission source of the communication frame.
Therefore, it is possible to notify the vehicle of an appropriate charging order according to a fairness viewpoint or an administrator policy, and it is possible to appropriately manage the charging facility.

<Details of Embodiment of the Present Invention>
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
〔Definition of terms〕
In describing the details of the present embodiment, first, terms used in the present embodiment are defined.
“Moving object”: A general term for objects passing through accessible areas such as public roads, private roads, and parking lots. The moving body of the present embodiment includes “vehicles” and “pedestrians” described later.

“Vehicle”: A vehicle that can travel on the road. Specifically, it means a vehicle under the Road Traffic Act. Vehicles under the Road Traffic Law include automobiles, motorbikes, light vehicles, and trolley buses.
In the present embodiment, the term “vehicle” includes all of “autonomous driving vehicle”, “support driving vehicle”, “manual driving vehicle”, and “electric vehicle” described later.

“Pedestrian”: A person who moves along a passage such as a road by a method that does not depend on a vehicle. Specifically, it means a pedestrian in the road traffic law. Pedestrians under the Road Traffic Law also include wheelchairs for the physically handicapped, walking assistance vehicles, etc., or those who pass a child's vehicle.
In the present embodiment, it is assumed that a pedestrian can wirelessly communicate with another wireless communication device using a “mobile terminal” described later.

“Wireless communication device”: a device that has a communication function for wirelessly transmitting and receiving a predetermined communication frame and is a main body of wireless communication. The wireless communication device of this embodiment includes a “roadside communication device” and a “mobile communication device” which will be described later.
“Roadside communication device”: A wireless communication device installed on the roadside. In the present embodiment, it refers to a wireless communication device that can independently execute local wireless communication with a mobile communication device.

“Mobile communication device”: A wireless communication device mounted on a mobile body (“mobile” in the case of a pedestrian). The mobile communication device of the present embodiment includes an “in-vehicle communication device” and a “portable terminal” which will be described later.
“In-vehicle communication device”: A wireless communication device that is permanently or temporarily mounted on a vehicle.
“Mobile terminal”: A wireless communication device carried by a pedestrian. Specifically, a mobile phone, a smartphone, a tablet computer, a PND (Portable Navigation Device), a notebook computer, and the like correspond to this.

“Roadside device”: A general term for devices installed on the roadside (infrastructure side). In the present embodiment, this includes a “management device” to be described later and one or a plurality of managed devices (such as roadside communication devices) managed thereby.
“Management device”: A computer device that integrally manages one or more managed devices. Specifically, the management apparatus according to the present embodiment includes a server computer that manages managed devices including one or a plurality of roadside communication devices.

"Manual driving": A vehicle occupant performs all driving of the host vehicle. That is, this is a contrast concept of “automatic driving”, which will be described later, and refers to driving in which the subject of basic operations such as acceleration / deceleration and steering are all passengers.
“Automatic driving”: The vehicle control system automatically performs part or all of the driving of the host vehicle based on the sensing results of various sensors of the vehicle. The automatic driving of the present embodiment includes “support driving” and “autonomous driving” described later.

“Assisted driving”: This means that the vehicle control system automatically performs part of the driving of the host vehicle based on the sensing results of the various sensors of the vehicle to assist the passenger in driving the host vehicle. Support by the vehicle control system includes automatic intervention of deceleration or direction change, alerting passengers by voice or screen display, and the like.
"Autonomous driving": The vehicle control system automatically performs all driving of the host vehicle based on the sensing results of various sensors of the vehicle. Therefore, in autonomous driving, the subject of basic operations such as acceleration / deceleration and steering is not a passenger (human) but a vehicle control system.

“Manually driven vehicle”: A vehicle having a control system that supports only manual driving.
“Automatic driving vehicle”: a vehicle having a control system capable of automatic driving. The autonomous driving vehicle of the present embodiment includes an “assisted driving vehicle” and an “autonomous driving vehicle” which will be described later.

“Assisted driving vehicle”: A vehicle having a control system capable of supporting driving. In the present embodiment, it is assumed that the support driving vehicle can be switched between the support driving and the manual driving.
“Autonomous vehicle” means a vehicle having a control system capable of autonomous driving. In this embodiment, it is assumed that the autonomous driving vehicle can be switched to any one of autonomous driving, support driving, and manual driving.

  “Electric vehicle”: A vehicle that can be driven by an electric motor. This includes not only EVs (Electric Vehicles) driven only by electric motors, but also PHVs (Plug-in Hybrid Vehicles) and PHEVs (Plug-in Hybrid Electrics) driven by both electric motors and fossil fuel engines. Vehicle) is also included.

[Overall configuration of wireless communication system]
FIG. 1 is a perspective view showing an example of a parking lot 2 employing a wireless communication system according to an embodiment of the present invention.
In the example of FIG. 1, a building 1 which is a store facility such as a shopping center is installed from the north side of the site surrounded by the fence 3, and the majority of the building 1 south side in the site is a parking lot 2. Yes.

An entrance 4 is provided on the fence 3 on the west side of the parking lot 2, and an exit 5 is provided on the fence 3 on the east side of the parking lot 2. The fence 3 that partitions the square around the building 1 and the parking lot 2 is provided with an entrance 6 through which the vehicle 20 and the pedestrian 24 enter and exit from the square toward the parking lot 2.
The parking area in the parking lot 2 is divided into three types of areas: a mixed area 8, a dedicated area 9, and a charging area 10.

The mixed area 8 is an area in which all the vehicles 20 can be parked regardless of the operation type of the vehicle 20, that is, manual operation or automatic operation, and occupies most of the center of the site.
In the example of FIG. 1, six parking areas 11 having parking spaces for ten cars are provided in the mixed area 8. The space between the parking sections 11 and the space between the parking section 11 and the fence 3 serve as a passage 12 for the vehicle 20 and the pedestrian 24 to pass through the mixed area 8.

The dedicated area 9 is a parking area prepared exclusively for the autonomously driving vehicle 20, and is provided from the south side of the parking lot 2.
In the example of FIG. 1, the dedicated area 9 is provided with one parking section 13 having parking spaces for 26 cars. The dedicated area 9 is isolated from the other areas 8 and 9 by the fence 3. The fence 3 that divides the dedicated area 9 is provided with a dedicated entrance 7 through which the autonomously driven vehicle 20 enters and exits from the mixed area 8 toward the dedicated area 9.

The charging area 10 is a parking area prepared for charging the vehicle 20, which is an electric vehicle, and is provided in the southeast part of the parking lot 2.
In the example of FIG. 1, the charging area 10 is provided with one parking section 14 having a parking space for eight cars. The charging area 10 is not partitioned by the fence 3 with respect to the mixed area 8, and the vehicle 20 can freely come and go between the mixed area 8 and the charging area 10.

The parking lot 2 is further provided with a roadside communication device 31, a monitoring camera 33, a speaker 34, a charging device 35, and a traffic indicator 36.
The roadside communication device 31 is installed on a support column that is erected at an appropriate place in the parking lot 2. In the example of FIG. 1, the roadside communication device 31 is classified into the following three types of roadside communication devices 31 </ b> A to 31 </ b> C according to the difference in installation position.

Roadside communication device 31A: Roadside communication device 31 installed at entrance 4, exit 5 and entrance 6
Roadside communication device 31B: Roadside communication device 31 installed at the exclusive entrance 7
Roadside communication device 31C: Roadside communication device 31 installed at the intersection of the passage 12
In addition, in this embodiment, when explaining the common matter of each roadside communication apparatus 31A-31C, it describes as "the roadside communication apparatus 31" using those common code | symbol "31".

The surveillance camera 33 is installed on a column that is erected in the northwest corner of the parking lot 2. The speaker 34 is installed on a support column erected at the entrance 6.
The charging device 35 is embedded in each parking space in the charging area 10. In the present embodiment, a power supply method for supplying electric power to a non-contact electric vehicle is assumed. For this reason, the charging device 35 embedded in each parking space employs a non-contact type that supplies power in a non-contact manner to a charger (not shown) provided on the lower surface portion of the electric vehicle.

The traffic indicator 36 is installed on a support column installed upright at the intersection of the passage 12. The traffic indicator 36 is composed of an electric light indicator that can be switched to either “passable display” indicating that the vehicle 20 flows into the intersection or “passable display” indicating that the vehicle 20 cannot flow. .
Each display by the traffic indicator 36 may be performed by turning on the “blue light” or “red light” as in the case of a signal lamp on a general road, or “passable”, “stop”, etc. You may perform by character display.

A management room 15 is installed on the east side of the building 1. A management device 38 is accommodated in the management room 15.
The management device 38 is connected to the router 37 via a communication line (broken line in FIGS. 1 and 3). Various managed devices 31 and 33 to 36 in the parking lot 2 are also connected to the router 37 via communication lines (see FIG. 3). Accordingly, the management device 38 and the management target devices 31 and 33 to 36 are connected via the router 37 so that wired communication is possible.

The communication between the management device 38 and the management target devices 31 and 33 to 36 may be wireless communication using a communication standard such as a wireless LAN (Local Area Network).
The structures and arrangements inside the building 1 and the parking lot 2 shown in FIG. 1 are merely examples, and the structures and arrangements are not limited to those shown in FIG.

[Combination of communication subjects of wireless communication system]
FIG. 2 is an explanatory diagram of combinations of communication subjects in the wireless communication system.
In the wireless communication system of this embodiment, in the parking lot 2 shown in FIG. 1, the roadside communication device 31, the in-vehicle communication device 54 of the vehicle 20, and the portable terminal 70 of the pedestrian 24 each have a communication frame (see FIG. 8) to exchange data by wireless communication.

Therefore, when the wireless communication system of this embodiment is distinguished by the difference in communication main body, four types of “road-to-vehicle communication”, “vehicle-to-vehicle communication”, “road-to-vehicle communication” and “vehicle-to-vehicle communication” shown in FIG. It becomes. The contents of each communication are simply defined as follows.
Road-to-vehicle communication: wireless communication between the roadside communication device 31 and the vehicle-mounted communication device 54 of the vehicle 20 Vehicle-to-vehicle communication: wireless communication between the vehicle-mounted communication devices 54 of the vehicle 20 Road-step communication: between the roadside communication device 31 and the pedestrian 24 Wireless communication between mobile terminals 70 Inter-vehicle communication: Wireless communication between the in-vehicle communication device 54 of the vehicle 20 and the mobile terminal 70 of the pedestrian 24

As a multiple access system in which the above four types of communication coexist, frequency division multiplexing (FDMA), code division multiple access (CDMA), or the like can be employed.
When the priority of transmission by the roadside communication device 31 is improved, a multi-access method in conformity with the “700 MHz band intelligent transportation system standard (ARIB STD-T109)” may be adopted. In this embodiment, it is assumed that this method is adopted.

In the multi-access scheme of the above-mentioned standard, a dedicated time slot transmitted by the roadside communication device 31 is assigned by a TDMA (Time Division Multiple Access) scheme, and a time slot other than the roadside dedicated time slot is assigned to a CSMA / CA (Carrier Sense Multiple Access). / Collision Avoidance) is a method assigned to vehicle-to-vehicle communication.
In the present embodiment, the mobile terminal 70 also performs wireless communication by the CSMA / CA method in a time zone other than the time slot dedicated to the roadside, like the vehicle-mounted communication device 54.

[Configuration of parking lot management system]
FIG. 3 is a block diagram illustrating a configuration example of the management system 30 for the parking lot 2.
As shown in FIG. 3, the management system 30 includes a roadside communication device 31, a monitoring camera 33, a speaker 34, a charging device 35, a traffic indicator 36, a router 37, and a management device 38.
The roadside communication device 31 includes a communication unit 81, a control unit 82, a storage unit 83, and an antenna 84. The communication unit 81 includes a communication interface having functions of wireless communication and wired communication.

Therefore, the communication unit 81 converts the RF signal received from the antenna 84 into a digital signal and outputs the digital signal to the control unit 82, converts the digital signal input from the control unit 82 into an RF signal, and transmits the RF signal from the antenna 84.
The communication unit 81 converts the analog signal received from the management device 38 into a digital signal and outputs the digital signal to the control unit 82. The communication unit 81 converts the digital signal input from the control unit 82 into an analog signal and transmits the analog signal to the management device 38. To do.

The control unit 82 includes a known CPU, RAM, RAM, and the like. The control unit 82 reads out and executes the computer program stored in the storage unit 83 and controls the overall operation of the roadside communication device 31.
The storage unit 83 includes a hard disk, a nonvolatile memory, and the like, and stores various computer programs and data.

The control executed by the control unit 82 includes relay control for the communication unit 81. For example, the control unit 82 transfers the communication frame received by the communication unit 81 to the management device 38.
In addition, when the communication unit 81 receives a management frame storing information to be notified to all customers from the management device 38, the control unit 82 causes the communication unit 81 to wirelessly transmit the received management frame.

The monitoring camera 33 is composed of a video camera that takes a moving image inside the parking lot 2. The surveillance camera 33 transmits image data of the captured video to the communication unit 91 of the management device 38.
The control unit 88 of the management device 38 temporarily stores the image data received by the communication unit 91 in the storage unit 93 and displays it as a live video on the monitor of the output unit 94.
The speaker 34 is composed of a loudspeaker for performing in-house broadcasting by voice toward the parking lot 2. The speaker 34 amplifies and outputs the audio signal received from the communication unit 91 of the management device 38.

The charging device 35 includes a detection sensor (not shown) that detects whether the vehicle 20 is set at a predetermined position in the charging area 10. This detection signal is transmitted to the management device 38.
When the vehicle 20 is detected at a predetermined position in the charging area 10 and the scheduled power supply start time is reached, the control unit 88 of the management device 38 transmits a power supply on signal to the charging device 35. When the scheduled power supply end time has elapsed, the control unit 88 transmits a power supply off signal to the charging device 35.

The traffic indicator 36 performs a display for the passenger of the vehicle 20 to identify whether the inflow to the intersection is possible or not according to the control signal received from the management device 38.
The control unit 88 of the management device 38 sets the inflow direction permitting the inflow of the vehicle 20 to “passable display” (for example, green light), and the inflow direction to restrict the inflow of the vehicle 20 to “inaccessible display” (for example, red) Control signal is generated so as to be a signal, and the generated control signal is transmitted to the traffic indicator 36 installed at the intersection in the parking lot 2.

The management device 38 includes a control unit 88 and an input / output interface 90 that are communicably connected via an internal bus 89, a communication unit 91, a drive 92, a storage unit 93, an output unit 94, and an input connected to the interface 90. Part 95 is provided.
The control unit 88 includes a known CPU, RAM, ROM, and the like. The control unit 88 reads and executes the computer program stored in the storage unit 93 and controls the overall operation of the management device 38.

The storage unit 93 includes a hard disk, a nonvolatile memory, and the like, and stores various computer programs and data. The input unit 95 includes a keyboard, a mouse, and a voice microphone, and the output unit 94 includes a display and a speaker.
The communication unit 91 includes a network interface. The communication unit 91 configures a wired LAN with each roadside communication device 31 connected to the router 37. The communication unit 91 can also perform data communication with the other devices to be managed 33 to 36.

The drive 92 drives a disk recording medium such as a CD or a DVD, and can read and write predetermined data on the disk.
The computer program executed by the control unit 88 may be a computer program written on the disk.

For the control executed by the control unit 88, in addition to the above-described control for each of the management target devices 31, 33 to 36, a charging order determination process using a communication frame received from the roadside communication device 31 (see FIG. 14), etc. There is.
Further, when there is information to be notified to all customers, the control unit 88 generates a management frame storing the information, and causes the communication unit 81 to broadcast-transmit the generated management frame to each roadside communication device 31. .

[Vehicle configuration]
(For autonomously driven vehicles)
FIG. 4 is a block diagram illustrating a configuration example of the control system 50 of the autonomous driving vehicle 21.
As shown in FIG. 4, the control system 50 of the autonomous driving vehicle 21 includes a central control unit 51 and an input / output interface 53 that are communicably connected via an internal bus 52, and an in-vehicle communication device connected to the interface 53. 54, a travel control unit 55, a steering control unit 56, a navigation unit 57, a first sensor 58, and a second sensor 59.

The central control unit 51 is composed of a known ECU (Electronic Engine Control Unit) and has a storage device (not shown) therein. The central control unit 51 reads out and executes the computer program stored in the storage device, and controls the overall operation of the control system 50.
The in-vehicle communication device 54 includes a communication unit 104, a control unit 105, a storage unit 106, and an antenna 107. The communication unit 104 includes a communication interface having a wireless communication function with the outside and a communication function within the system.

Accordingly, the communication unit 104 converts the RF signal received from the antenna 107 into a digital signal and outputs the digital signal to the control unit 105, converts the digital signal input from the control unit 105 into an RF signal, and transmits the RF signal from the antenna 107.
In addition, the communication unit 104 outputs the control signal received from the central control unit 51 to the control unit 105 and transmits the control signal input from the control unit 105 to the central control unit 51.

The control unit 105 includes a known CPU, RAM, RAM, and the like. The control unit 105 reads out and executes the computer program stored in the storage unit 106 and controls the overall operation of the in-vehicle communication device 54.
The storage unit 106 includes a hard disk, a nonvolatile memory, and the like, and stores various computer programs and data. The storage unit 106 stores a vehicle ID that is identification information of the host vehicle. The vehicle ID is, for example, a numerical value generated by a random number generator when the engine is started.

The control executed by the control unit 105 includes an information transmission process (see FIG. 9) for transmitting a communication frame (see FIG. 8) storing the current state information of the control system 50 to the outside.
Specifically, the control unit 105 collects current identification information to be stored in the storage areas A1 to A10 defined in FIG. 8 from each unit in the control system 50, and temporarily stores the identification information in the storage unit 106. Remember me. Then, a communication frame storing the stored identification information is generated, and the generated communication frame is wirelessly transmitted to the communication unit 104.

The travel control unit 55 is a control unit that has jurisdiction over all control related to travel of the vehicle 20.
The control performed by the travel control unit 55 includes, for example, acceleration / deceleration control that adjusts the number of revolutions of the engine, electric motor, etc. according to the amount of depression of the accelerator pedal, and adjustment of hydraulic pressure of the hydraulic brake according to the amount of depression of the brake pedal Braking control to be performed, shift control to a torque converter, and the like are included.

The steering control unit 56 is a control unit that has jurisdiction over all control related to the steering of the vehicle 20.
The control performed by the steering control unit 56 includes, for example, direction control for adjusting the steering angle of the front wheels according to the amount of rotation of the steering wheel, lamp control for controlling blinking of lamps such as a direction indicator, and sudden braking. This includes ABS (Antilock Brake System) control that prevents the tire from locking and maintains a steerable state.

The navigation unit 57 includes a route search unit composed of a computer device that searches for an optimum route when the host vehicle passes to the destination, an operation unit for inputting to the route search unit, and a route that is the calculation result as an image or sound. It has a display and a speaker to guide the passenger.
In general, the route search unit calculates a minimum cost route that minimizes the link cost by a specific route search logic. As the route search logic, for example, the Dijkstra method or the potential method is used.

The navigation unit 57 includes a time synchronization function for acquiring the current time from the GPS signal, a position detection function for measuring the current position (latitude, longitude, and altitude) of the host vehicle from the GPS signal, and an azimuth and angular velocity of the host vehicle by the direction sensor. It has an orientation detection function that measures
The navigation unit 57 also includes a storage device in which road map data is stored. The road map data is used to map match the position information of the host vehicle during the search process by the route search unit.

The first sensor 58 is a sensor for obtaining a sensing result necessary for assisting driving. As shown in FIG. 4, for example, the first sensor 58 includes an ultrasonic sensor, a video camera, or the like disposed at four corners on the front, rear, left, and right of the vehicle 20.
The first sensor 58 provided on the front side is a sensor for detecting the presence of an object mainly present in front of the host vehicle, and the first sensor 58 provided on the rear side is mainly present behind the host vehicle. This is a sensor for detecting the presence of an object that performs.

The second sensor 59 is a sensor for obtaining a sensing result necessary for autonomous driving. As shown in FIG. 4, for example, the second sensor 59 includes an ultrasonic sensor, a video camera, or the like disposed on the ceiling portion of the vehicle 20.
The second sensor 59 is rotatable around the longitudinal axis at a relatively high speed, and is a sensor for detecting the presence of an object existing around the host vehicle.

The central control unit 51 of the autonomous driving vehicle 21 can perform autonomous driving based on the sensing results of the first and second sensors 58 and 59. As an example of a vehicle capable of autonomous driving, for example, there is a vehicle described in Patent Document 4 (so-called “Google car”).
The control principle of autonomous driving is based on predicting the expected behavior of the object detected by the first and second sensors 58 and 59 from past data, so that the vehicle is directed to the target position based on the predicted behavior. Commands are given to the units 55-57.

  In autonomous driving, the central control unit 51 performs all of the driving of the host vehicle. However, the initial setting such as destination input to the navigation unit 57 is not limited to the owner of the autonomous driving vehicle 21 (whether boarding or non-boarding). No.) or the person who received the management consignment from the owner.

The central control unit 51 of the autonomous driving vehicle 21 can also perform support driving based on the sensing result by the first sensor 58. Examples of vehicles capable of assisting driving include vehicles described in Patent Literatures 1 to 3, for example.
As an example of control for assistance driving, the possibility of collision is predicted from the distance between the object detected by the first sensor 58 and the host vehicle, and when it is determined that the possibility of collision is high, a deceleration intervention or attention to the passenger is taken. Some units give commands to the units 55 to 57 so as to evoke them.

The central control unit 51 of the autonomous driving vehicle 21 can switch to the manual driving of the passenger without using the sensing results of the first and second sensors 58 and 59.
Thus, the control system 50 mounted on the autonomous driving vehicle 21 can execute either the assist driving or the manual driving as the downgraded operation mode as well as the autonomous driving. . The operation mode is switched by manual operation input by the passenger, transmission of a control command from the mobile terminal 70, or the like.

(For support driving vehicles)
FIG. 5 is a block diagram illustrating a configuration example of the control system 50 for the assisting driving vehicle 22.
Hereinafter, functional parts common to those in FIG. 4 will be denoted by the same reference numerals, detailed description thereof will be omitted, and differences from the autonomous driving vehicle 21 illustrated in FIG. 4 will be described.

In the control system 50 for the assisted driving vehicle 22 shown in FIG. 5, the central control unit 51 does not support autonomous driving, and thus the second sensor 59 is omitted.
That is, the central control unit 51 of the assisting driving vehicle 22 can perform assisting driving based on the sensing result of the first sensor 58, but cannot perform autonomous driving using the sensing result of the second sensor 59.

The central control unit 51 of the assisting driving vehicle 22 can switch to the passenger's manual driving without using the sensing result of the first sensor 58.
As described above, the control system 50 mounted on the support driving vehicle 22 can execute the manual operation as the downgraded operation mode as well as the support driving. The operation mode is switched by a manual operation input by a passenger, transmission of a control signal from the portable terminal 70, or the like.

(For manually operated vehicles)
FIG. 6 is a block diagram illustrating a configuration example of the control system 50 of the manually operated vehicle 23.
Hereinafter, functional parts common to those in FIGS. 4 and 5 are denoted by the same reference numerals, and detailed description thereof is omitted. Differences from the autonomous driving vehicle 21 shown in FIG. 4 and the assisting driving vehicle 22 shown in FIG. Will be described.

In the control system 50 of the manually operated vehicle 23 shown in FIG. 6, the central control unit 51 does not support autonomous driving and support driving, and therefore the first and second sensors 58 and 59 are omitted.
That is, the central control unit 51 of the manually driven vehicle 23 cannot perform autonomous driving using the sensing results of the first and second sensors 58 and 59 and assisting driving using the sensing results of the first sensor 58. Only manual operation can be performed.

[Configuration of mobile terminal]
FIG. 7 is a block diagram illustrating a configuration example of the mobile terminal 70.
As illustrated in FIG. 7, the mobile terminal 70 includes a communication unit 120, a control unit 121, a storage unit 122, an operation unit 124, a display unit 123, and an antenna 125. The communication unit 120 includes a communication interface that can wirelessly communicate with the roadside communication device 31 and the in-vehicle communication device 54 in addition to the mobile base station of the contracted carrier.

Therefore, the communication unit 120 converts not only the RF signal from the mobile base station but also the RF signal reaching the antenna 125 from the roadside communication device 31 or the in-vehicle communication device 54 into a digital signal and outputs the digital signal to the control unit 121. be able to.
The communication unit 120 can also convert the digital signal input from the control unit 121 into an RF signal and transmit the RF signal from the antenna 125 to the roadside communication device 31 or the in-vehicle communication device 54.

The control unit 121 includes a known CPU, ROM, RAM, and the like. The control unit 121 reads out and executes the computer program stored in the storage unit 122 and controls the overall operation of the mobile terminal 70.
The storage unit 122 includes a hard disk, a nonvolatile memory, and the like, and stores various computer programs and data. The storage unit 122 stores a mobile ID that is identification information of the mobile terminal 70. The mobile ID includes, for example, a unique ID of a contractor, a MAC address, and the like.

The storage unit 122 stores various application software arbitrarily installed by the user.
This application software includes, for example, a control program for performing wireless communication with the roadside communication device 31 and the in-vehicle communication device 54.

The control executed by the control unit 121 includes an information transmission process (see FIG. 9) for transmitting a communication frame (see FIG. 8) storing the current state information of the mobile terminal 70 to the outside.
Specifically, the control unit 121 collects current identification information to be stored in the storage areas A1 to A10 defined in FIG. 8 from each unit in the mobile terminal 70, and temporarily stores the identification information in the storage unit 122. Remember me. Then, a communication frame storing the stored identification information is generated, and the generated communication frame is wirelessly transmitted to the communication unit 120.

The operation unit 124 includes various operation buttons and a touch panel function of the display unit 123. The operation unit 124 outputs an operation signal corresponding to a user operation to the control unit 121.
The display unit 123 includes a liquid crystal display, for example, and displays various types of information to the user. For example, the display unit 123 can display the image data transmitted from the management device 38 on the screen.

  The mobile terminal 70 has a time synchronization function for acquiring the current time from the GPS signal, a position detection function for measuring the current position (latitude, longitude, and altitude) of the host vehicle from the GPS signal, and an azimuth and angular velocity of the host vehicle by the direction sensor. It also has an orientation detection function that measures

[Frame format of communication frame]
FIG. 8 is an explanatory diagram illustrating an example of a frame format of a communication frame.
As shown in FIG. 8, the “communication frame” transmitted and received in the wireless communication system of the present embodiment includes “preamble”, “header”, “data”, and “CRC” (Cyclic Redundancy Check).

“Data” includes “storage areas” from A1 to A10.
The “storage area A1” is a storage area for the terminal ID. The storage area A1 stores the terminal ID values of the mobile communication devices 54 and 70 when the communication frame is transmitted.
For example, the control unit 105 of the in-vehicle communication device 54 stores the value of the vehicle ID stored in the storage unit 106 during frame transmission in the storage area A1. In addition, the control unit 121 of the portable terminal 70 stores the value of the portable ID stored in the storage unit 122 at the time of frame transmission in the storage area A1.

The “storage area A2” is a storage area for time information. The transmission time of the communication frame is stored in the storage area A2.
Strictly speaking, the transmission time of the communication frame by the mobile communication devices 54 and 70 is the time of radio wave transmission from the antennas 107 and 125. However, since the delay time of the RF unit is very small, the current time value at the time of generation of the communication frame by the control units 105 and 121 may be used.

The “storage area A3” is a storage area for the current position information. In the storage area A3, latitude and longitude are stored as current position information.
For example, the control units 105 and 121 of the mobile communication devices 54 and 70 store the latitude and longitude (current position at the time of frame transmission) stored in the storage units 106 and 122 at the time of frame transmission in the storage area A3.

The “storage area A4” is a storage area for defining the type of mobile object. Accordingly, the identification information of the type of the moving object is stored in the storage area A4.
In the present embodiment, “general vehicle”, “large vehicle”, “two-wheeled vehicle”, and “pedestrian” are assumed as types of moving bodies. Therefore, it is sufficient to assign at least a 2-bit data amount as the identification information of the type of the moving object.

For example, when identification information is assigned such as “general vehicle” = 00, “large vehicle” = 01, “motorcycle” = 10, and “pedestrian” = 11, the control unit 105 of the in-vehicle communication device 54 is assigned. Stores the identification information (= 00, 01 or 10) corresponding to the type of the host vehicle stored in the storage unit 106 in the storage area A4.
Moreover, the control part 121 of the portable terminal 70 stores the identification information (= 11) corresponding to the classification of the mobile body which the memory | storage part 122 memorize | stores in storage area A4.

The “storage area A5” is a storage area for defining the type of operation mode of the moving object. Therefore, mode type identification information is stored in the storage area A5.
In the present embodiment, “manual driving”, “support driving”, “autonomous driving”, and “pedestrian movement” are assumed as the mode types of the operation mode of the moving body. Therefore, as the mode type identification information, a data amount of at least 2 bits may be allocated.

For example, when identification information is assigned such as “manual driving” = 00, “support driving” = 01, “autonomous driving” = 10, and “pedestrian movement” = 11, the control unit 105 of the in-vehicle communication device 54 is assigned. Determines the identification information corresponding to the current mode type, and stores the determined identification information (00, 01 or 10) in the storage area A5.
The mode type can be determined by the control unit 105 by, for example, the control unit 105 accessing the central control unit 51 and inquiring about the current mode type.

In the manually operated vehicle 23, only manual operation is executed. Therefore, the mode type identification information included in the communication frame transmitted by the in-vehicle communication device 54 of the manually operated vehicle 23 is necessarily “manual operation” (= 00).
In the assist driving vehicle 22, either assist driving or manual driving is executed. Accordingly, the mode type identification information included in the communication frame transmitted by the in-vehicle communication device 54 of the support driving vehicle 22 is “support driving” (= 01) or “manual driving” (= 00).

  In the autonomous driving vehicle 21, any one of autonomous driving, support driving, and manual driving is executed. Therefore, the mode type identification information included in the communication frame transmitted by the in-vehicle communication device 54 of the autonomous driving vehicle 21 is “autonomous driving” (= 10), “support driving” (= 01), or “manual driving” (= 00).

The control unit 121 of the portable terminal 70 determines identification information corresponding to the mode type of the pedestrian 24, and stores the determined identification information (= 11) in the storage area A5.
The mode type is determined by the control unit 121, that is, whether or not the pedestrian 24 is actually moving is determined by, for example, detecting a walk by an acceleration sensor or the like mounted on the mobile terminal 70. be able to. Note that walking includes not only walking but also moving by rush.

The “storage area A6” is a storage area for defining the presence or absence of a passenger. Therefore, in the storage area A6, identification information indicating whether the passenger of the vehicle 20 is present or absent is stored.
The presence / absence of a passenger in the vehicle 20 can only be either “present” or “not present”. Therefore, at least 1-bit data amount may be allocated as the identification information for the presence or absence of the passenger.

For example, when identification information is assigned such that “has a passenger” = 0 and “no passenger” = 1, the control unit 105 of the in-vehicle communication device 54 is a passenger of the own vehicle stored in the storage unit 106. The identification information (= 0 or 1) corresponding to the presence or absence of is stored in the storage area A6.
The determination of the presence or absence of a passenger can be made, for example, based on whether or not a key has been inserted into the vehicle 20 and whether or not a predetermined setting input has been made by the owner of the vehicle 20.

In the support driving vehicle 22 and the manual driving vehicle 23, the driving subject of the vehicle 20 is always a passenger. Therefore, the identification information of the presence / absence of the passenger included in the communication frame transmitted while these vehicles 22 and 23 travel is necessarily “passenger present” (= 0).
In the autonomous driving vehicle 21, there may be no passenger in the case of autonomous driving. Therefore, the identification information of the presence / absence of a passenger included in the communication frame transmitted while the vehicle 21 is traveling may be “passenger present” (= 0) or “passenger absent” (= 1). .

  When the moving body is a pedestrian 24, the presence or absence of a passenger is irrelevant, and the control unit 121 of the mobile terminal 70 does not store identification information in the storage area A6.

The “storage area A7” is a storage area for defining parking information of the vehicle 20. The storage area A7 for “parking information” is classified into a storage area for defining the “parking state” of the vehicle 20 at the current time and a storage area for the “parking area” where the vehicle 20 is parked.
The parking state of the vehicle 20 in the parking lot 2 can be defined as either “moving” indicating an unparked state or “parking” indicating completion of parking. Accordingly, at least 1-bit data amount may be allocated as the parking state identification information.

For example, when identification information is assigned such as “moving” = 0 and “parking” = 1, the control unit 105 of the in-vehicle communication device 54 determines identification information corresponding to the current parking state, The determined identification information (= 0 or 1) is stored in the parking state portion of the storage area A7.
The determination of the parking state of the vehicle 20 is, for example, determined that the vehicle 20 is moving when the vehicle 20 is traveling in the parking lot 2 and stops at a predetermined position in the parking lot 2 for a certain time (for example, 10 minutes) or longer. You can do this by judging that you are parked.

In the present embodiment, “mixed area” and “dedicated area” are assumed as types of parking areas used by the vehicle 20. Therefore, at least 1-bit data amount may be allocated as the identification information of the type of the parking area.
For example, when identification information is assigned such that “mixed area” = 0 and “dedicated area” = 1, the control unit 105 of the in-vehicle communication device 54 reads the identification information corresponding to the parking area from the storage unit 106. The determined identification information (= 0 or 1) is stored in the parking area portion of the storage area A7.

The support driving vehicle 22 and the manual driving vehicle 23 cannot use the exclusive area 9 of the parking lot 2. Therefore, the identification information of the type of the parking area included in the communication frame transmitted by these vehicles 22 and 23 is necessarily “mixed area” (= 0).
The autonomous driving vehicle 21 can use both the mixed area 8 and the dedicated area 9 of the parking lot 2. Therefore, the identification information of the parking area included in the communication frame transmitted by the vehicle 21 may be “mixed area” (= 0) or “dedicated area” (= 1).

Whether the autonomous driving vehicle 21 uses the mixed area 8 or the dedicated area 9 is set by manual input to the operation unit of the navigation unit 57 by the owner, transmission of a control frame using the portable terminal 70, or the like. It can be carried out.
In addition, since the parking information (parking state and parking area) is irrelevant when the moving body is the pedestrian 24, the control unit 121 of the mobile terminal 70 does not store the identification information in the storage area A7.

The “storage area A8” is a storage area for defining driver (driver) attributes. In the storage area A8, identification information as to whether or not the driver of the vehicle 20 is a traffic weak is stored. The case where the driver is a traffic weak person includes, for example, the case where the driver is an elderly person over 70 years old, the case where the driver is a beginner collecting a driver's license, and the like.
Whether or not the driver is a weak traffic person can be expressed by either “with weak flag” or “without weak flag”. Accordingly, at least 1-bit data amount may be assigned as the identification information of the driver attribute.

For example, when identification information is assigned such that “with weak flag” = 0 and “without weak flag” = 1, the control unit 105 of the in-vehicle communication device 54 stores the driver of the host vehicle stored in the storage unit 106. The attribute identification information (= 0 or 1) is stored in the storage area A8.
The setting that the driver is a traffic weak person can be performed, for example, by manually inputting in advance to the operation unit of the navigation unit 57 by the driver who is a traffic weak person.

In all of the autonomous driving vehicle 21, the assist driving vehicle 22, and the manual driving vehicle 23, manual driving is possible, and the driver of manual driving may be a traffic weak person. Accordingly, the identification information of the driver attribute included in the communication frame transmitted by the vehicle 20 may be “weak flag present” or “weak flag absent”.
When the moving body is a pedestrian 24, the driver's attributes are irrelevant, and the control unit 121 of the mobile terminal 70 does not store the identification information in the storage area A8.

The “storage area A9” is a storage area for defining energy information. The storage area A9 for “energy information” is classified into a storage area for defining “requirement necessity” of energy and a storage area for “energy type” to which the vehicle 20 corresponds.
Whether or not the vehicle 20 needs to be replenished can be defined by either “replenishment required” indicating that replenishment is necessary or “supplemental necessity” indicating that replenishment is unnecessary. Therefore, at least 1-bit data amount may be allocated as the identification information indicating whether or not replenishment is necessary.

For example, when identification information is assigned such that “replenishment is required” = 0 and “replenishment is not permitted” = 1, the control unit 105 of the in-vehicle communication device 54 determines identification information corresponding to the necessity of replenishment of the host vehicle. Then, the determined identification information (= 0 or 1) is stored in the replenishment necessity portion of the storage area A9.
For example, when the vehicle 20 is an electric vehicle, the determination as to whether or not the vehicle 20 needs to be replenished can be made by comparing the current charge remaining amount and the current fuel remaining amount with a predetermined threshold. it can.

  The energy type to be replenished to the vehicle 20 including the electric vehicle can be defined by any one of “charging” for the battery, “fueling” of fuel such as gasoline, and “both possible” capable of both. Therefore, as the identification information for identifying the energy type, a data amount of at least 2 bits may be assigned.

  For example, when identification information is assigned such as “charging” = 00, “refueling” = 01, “both allowed” = “10”, the control unit 105 of the in-vehicle communication device 54 determines the energy corresponding to the own vehicle. The type is read from the storage unit 106 and determined, and the determined identification information (= 00, 01, or 10) is stored in the energy type portion of the storage area A9.

The “storage area A10” is a storage area for defining a free area. In the present embodiment, the storage area A10 stores various types of information necessary for the owner of the vehicle 20 that is an electric vehicle to use the charging device 35 provided in the charging area 10 of the parking lot 2. The
For example, the storage area A <b> 10 stores a desired charge amount to be charged to the battery of the host vehicle, a scheduled delivery time from the parking lot 2, and the like. Such information can be performed by the owner of the electric vehicle manually manually input in advance to the operation unit of the navigation unit 57 by the driver.

  In the example of the communication frame shown in FIG. 8, 10 storage areas A from A1 to A10 are defined, but 11 or more storage areas Ai (i ≧ 11) may be defined. A communication frame in which less than 10 storage areas Ai (1 ≦ i <10) are defined may be employed.

[Information transmission control by mobile communication equipment]
FIG. 9 is a flowchart of information transmission control executed by the mobile communication devices 54 and 70.
As shown in FIG. 9, the control units 105 and 121 of the mobile communication devices 54 and 70 first acquire the state information of the moving body (step S10).
The “status information” of the mobile means the current identification information to be stored in the storage areas A1 to A10 of the communication frame defined in FIG.

Therefore, when the moving body is the vehicle 20, the control unit 105 of the in-vehicle communication device 54 collects current identification information to be stored in the storage areas A1 to A10 defined in FIG. 8 from each unit in the control system 50. The identification information is temporarily stored in the storage unit 106.
When the moving body is the pedestrian 24, the control unit 121 of the mobile terminal 70 collects the current identification information to be stored in the storage areas A1 to A10 defined in FIG. 8 and stores the identification information in the storage unit 122. Memorize temporarily.

Next, the control units 105 and 121 of the mobile communication devices 54 and 70 store state information in predetermined storage areas A1 to A10 to generate a communication frame (see FIG. 8), and the generated communication frame is transmitted to the communication unit 104. , 120 is transmitted wirelessly (step S12).
Thereby, the mobile body which consists of the vehicle 20, the pedestrian 24, etc. which exist in the parking lot 2 can perceive the status information of other mobile bodies other than itself by inter-vehicle communication or inter-vehicle communication using a communication frame It becomes like this.

For example, assuming the vehicle-to-vehicle communication shown in FIG. 2, both the in-vehicle communication devices 54 of both vehicles 20 that are separated by a receivable distance execute information transmission processing and send out a communication frame.
Accordingly, one vehicle 20 can grasp the state information of the other vehicle 20 from the communication frame received from the other vehicle 20. Further, the other vehicle 20 can grasp the state information of the one vehicle 20 from the communication frame received from the one vehicle 20.

Similarly, assuming the inter-vehicle communication shown in FIG. 2, both the in-vehicle communication device 54 of the vehicle 20 and the portable terminal 70 of the pedestrian 24 that are separated by a receivable distance execute information transmission processing and perform communication frames. Is sent out.
Therefore, the vehicle 20 can grasp the state information of the pedestrian 24 from the communication frame received from the pedestrian 24. Further, the pedestrian 24 can grasp the state information of the vehicle 20 from the communication frame received from the vehicle 20.

Assuming the road-to-vehicle communication shown in FIG. 2, the in-vehicle communication device 54 of the vehicle 20 executes an information transmission process and transmits a communication frame, so that the roadside communication device 31 is separated by a receivable distance. The state information of the vehicle 20 can be grasped.
When the roadside communication device 31 receives the communication frame including the state information of the vehicle 20 or the pedestrian 24, the roadside communication device 31 immediately transfers the received communication frame by broadcast, and transfers it to the management device 38. The “second transfer process” is executed.

The reason for performing the first transfer process is that there is an obstacle such as the fence 3 or the other vehicle 20 between the one vehicle 20 and the other vehicle 20, so that the communication frame cannot be received in the inter-vehicle communication. Because there is.
If the roadside communication device 31 executes the first transfer process, even if the communication frame cannot be transmitted / received in the inter-vehicle communication, the state information of the other vehicle 20 can be detected in advance, and the safety support control using the communication frame ( (See FIG. 10).

The reason for performing the second transfer process is that the management device 38 collects and manages communication frames including the state information of the vehicle 20 and the pedestrian 24.
If the management device 38 collects and manages the communication frame including the state information of the moving object, if an accident occurs in the parking lot 2, the content of the communication frame near the time when the accident occurred is analyzed, It is possible to analyze which is responsible.

  9 may be executed by the central control unit 51 of the control system 50 instead of the control unit 105 of the in-vehicle communication device 54 when the moving body is the vehicle 20.

[Outline of control using identification information of communication frame]
In the wireless communication system of the present embodiment, each mobile wireless communication device transmits its state information to the outside using the communication frame shown in FIG.
Therefore, on the receiving side of the communication frame, depending on the content of the identification information included in the communication frame of another mobile body, control useful for encouraging safe driving in the parking lot 2 and efficient management control by the management system 30 Various useful controls can be executed. Hereinafter, the contents of these controls will be described.

[Safety support control by in-vehicle communication device]
FIG. 10 is a flowchart of safety support control executed by the in-vehicle communication device 54.
As shown in FIG. 10, the control unit 105 of the in-vehicle communication device 54 determines whether or not a communication frame of another mobile unit has been received (step S20).
The communication frame of another mobile unit may be a communication frame directly received from another mobile unit by inter-vehicle communication or inter-pedal communication, or may be a communication frame received by transfer by the roadside communication device 31.

If the determination result is negative, the control unit 105 ends the process.
When the above determination result is affirmative, the control unit 105 further determines whether or not another moving body is in the vicinity of the host vehicle and is approaching (step S22).
It can be determined whether or not another moving body is in a nearby position depending on whether or not the distance from the host vehicle to the other moving body is within a predetermined threshold (for example, 10 m).
Whether or not another moving body is approaching can be determined by whether or not the degree of decrease in the distance from the host vehicle to the other moving body is within a predetermined threshold.

If the determination result is negative, the control unit 105 ends the process.
If the determination result is affirmative, the control unit 105 executes “passage priority comparison process” (step S24).
Specifically, based on the comparison between the mode type of the own vehicle and the mode type of the other moving body, the control unit 105 selects any of the passing priority of the own vehicle and the passing priority of the other moving body. Compare whether the traffic priority is high.

In the storage unit 106 of the in-vehicle communication device 54, the following relational expression for the priority of traffic associated with the mode type of the moving object is set in advance.
P>M>A> A +
Here, “P” means “pedestrian movement”, “M” means “manual driving”, “A” means “support driving”, and “A +” means “autonomous driving”.

And the control part 105 applies the mode classification of the own vehicle, and the mode classification extracted from the communication frame to said relational expression, and compares which mobile body has the high priority of traffic.
For example, assuming that the mode type of the host vehicle is autonomous driving (A +) and the mode type of the other moving body is manual driving (M), the control unit 105 determines that other mode is based on the comparison using the above relational expression. It can be determined that the traveling priority of the moving object is higher.

As a result of the comparison processing using the above relational expression, the control unit 105 determines whether or not the communication partner's passing priority is higher than the own vehicle's passing priority (step S26).
If the determination result is negative, the control unit 105 ends the process.
When the above determination result is affirmative, the control unit 105 executes “the other party's passage priority process” for giving priority to the other party's passage (step S28).

As a specific example of the other party's traffic priority processing, it is conceivable to notify the passenger by voice or image output that the road should be given off because the vehicle's traffic priority is low. Moreover, you may decide to perform a brake intervention so that the own vehicle may stop.
In addition to the above notification and intervention control, a passing operation for blinking the headlight may be performed to prompt the other party to pass, or a control frame including information to give way to the other party's in-vehicle communication device 54 or mobile phone You may decide to transmit to the terminal 70. FIG.

As described above, according to the wireless communication system of the present embodiment, the control unit 105 of the in-vehicle communication device 54 determines whether or not the own vehicle is based on the comparison between the mode type of the own vehicle and the mode type included in the received communication frame. Determine the operation.
Therefore, in the mixed area 8 of the parking lot 2 where the vehicles 20 of various modes are mixed, each vehicle 20 can take an appropriate safe driving action.

For example, it is assumed that the autonomous driving vehicle 21 for autonomous driving (A +) is traveling unattended. In this case, the passengers of the other vehicles 22 and 23 who have encountered the autonomous driving vehicle 21 are surprised or anxious to be unmanned, and the possibility of causing an accident increases.
In addition, when the autonomous driving vehicle 21 for autonomous driving (A +) is unmanned, the owner instructs the owner to go to the parking after getting off at the doorway 6 or to come to the doorway 6 for exiting. However, in the case of vehicles 22 and 23 in support operation (A +) and manual operation (M), the customers are on the vehicles 22 and 23, so entry and exit were completed quickly. Is preferable in improving customer satisfaction.

According to the wireless communication system of the present embodiment, since the driving priority of autonomous driving (A +) is set to the lowest, the autonomous driving vehicle 21 of autonomous driving (A +) is the vehicle 22 or 23 of another operation mode. When a pedestrian 24 is encountered, the other party's pass priority process (step S28 in FIG. 10) is always performed to give way.
For this reason, the possibility that passengers of other vehicles 22 and 23 feel uneasy and cause an accident is reduced. In addition, the possibility that the vehicles 22 and 23 on which the customer is on will enter or leave the vehicle is increased, leading to an improvement in customer satisfaction.

  According to the wireless communication system of the present embodiment, the traffic priority of the pedestrian 24 that is pedestrian movement (P) is set to be the highest, so that the traffic safety of the pedestrian 24 in the parking lot 2 is improved. There is also an advantage of being able to do it.

In the wireless communication system of the present embodiment, the reason why the driving priority of manual driving (M) is higher than the driving priority of support driving (A) is as follows.
That is, since the driver of the vehicle 20 in the manual operation (M) has not received driving assistance from the control system 50, it is considered that the driving operation for warehousing and unloading is harder than the assistance driving (A). In addition, there is a higher possibility of causing a collision accident than in the assisted driving (A). Therefore, increasing the priority of manual driving (M) will reduce the possibility of an accident and increase the possibility of entering or leaving the parking lot 2 earlier, thereby improving customer satisfaction. Because it is connected.

As described above, the communication frame (see FIG. 8) of the present embodiment includes the storage area A8 for storing identification information as to whether or not the driver attribute is a traffic weak person (see FIG. 8).
Therefore, in the wireless communication system of the present embodiment, whether or not the attribute of the driver is a traffic weak may be further included as a determination condition as to whether or not the traffic priority is high.

In this case, for example, the following relational expression may be adopted as the relational expression of the traffic priority associated with the mode type of the moving object.
P>MW>AW>M>A> A +
Here, “P” is “pedestrian movement”, “MW” is “manual driving and the driver is a traffic weak”, “AW” is “support driving and the driver is a traffic weak”, and “A” is “support driving” "," A + "means" autonomous driving ".

If the driving priority of manual driving and assistance driving (MW, AW) where the driver is a traffic weaker is made higher than the driving priority of normal manual driving (M) as in the above relational expression, driving Priority is given to the passage of the vehicle 20 driven by an inexperienced traffic weak person. For this reason, the accident prevention in the parking lot 2 can be aimed at more effectively.
However, the above relational expression is an example, and for example, the following relational expression may be adopted.
P>MW>M>AW>A> A +

In the relational expression of the above-mentioned traffic priority, the case where the autonomous driving vehicle 21 for autonomous driving (A +) is unmanned is assumed. However, a passenger who is not involved in driving may be on the autonomous driving vehicle 21 whose mode type is autonomous driving (A +).
Thus, when the autonomous driving vehicle 21 of autonomous driving (A +) is manned, complete automatic driving is performed as in the case of unattended, but in order to shorten customer entry time and improve customer satisfaction. It is preferable that the traffic priority in the mixed area 8 is higher than that of unmanned autonomous driving (A +).

Therefore, when the autonomous driving (A +) vehicle 21 is manned or unmanned, a difference in traffic priority is preferably set as follows.
P>M>A> A + P> A +
Here, “P” is “pedestrian movement”, “M” is “manual driving”, “A” is “support driving”, “A + P” is “autonomous driving with passenger”, “A +” is “boarding” Autonomous operation without a person ”.

  Note that the safety support control in FIG. 10 may be executed not by the control unit 105 of the in-vehicle communication device 54 but by the central control unit 51 of the control system 50.

[Safety support control by roadside communication equipment]
FIG. 11 is a flowchart of the safety support control executed by the roadside communication device 31C.
As shown in FIG. 11, the control unit 82 of the roadside communication device 31C determines whether or not two moving bodies (the vehicle 20 or the pedestrian 24) flow into the intersection almost simultaneously (step S70).
This determination may be performed based on whether or not the arrival time of each moving object estimated from the time information and position information included in the communication frame is within a predetermined threshold (for example, 1.0 second). it can.

When the determination result is negative, the control unit 82 ends the process.
If the determination result is affirmative, the control unit 82 immediately transfers the received communication frame (step S72).
Thereby, even when a mobile body cannot communicate directly (communication between vehicles or communication between vehicles), a mutual communication frame can be transmitted / received by the indirect communication which intervened 31 C of roadside communication apparatuses. For this reason, possibility that a mobile body will perform the safety assistance control of FIG. 10 can be improved.

When the above determination result is affirmative, the control unit 82 further executes traffic restriction by the traffic indicator 36 (step S74). This traffic regulation can be performed by setting the traffic indicator 36 of one inflow path to “passable display” and the traffic indicator 36 of the other inflow path to “passable display”.
In this case, the control unit 82 compares the passage priority of the two mobile units from the mode type included in the communication frame, displays the inflow path of the mobile unit with the higher pass priority, and displays the passage priority. What is necessary is just to make the inflow path of a lower mobile body inaccessible display.

Further, the traffic restriction by the traffic indicator 36 may be such that the traffic indicators 36 of both inflow paths are set to “impossible to display”.
In this case, the possibility that both of the two moving bodies stop before the intersection increases, and a collision accident at the intersection in the parking lot 2 can be more effectively prevented.

  Note that the safety support control of FIG. 11 may be executed by the control unit 88 of the management device 38 instead of the control unit 82 of the roadside communication device 31C.

[Reception management control by roadside communication device]
FIG. 12 is a flowchart of warehousing management control executed by the roadside communication device 31B.
The example of FIG. 12 assumes a case where an unmanned autonomous driving vehicle 21 operating in the autonomous driving mode is instructed to enter the dedicated area 9 (see FIG. 1) on the south side of the site. Note that a circle in FIG. 12 means reception of a frame.

As shown in FIG. 12, the autonomous driving vehicle 21 first stops temporarily outside the entrance 7 of the dedicated area 9 (step S30), and then the in-vehicle communication device 54 of the autonomous driving vehicle 21 transmits a communication frame ( Step S32).
Next, the control unit 82 of the roadside communication device 31B determines the warehousing permission condition based on the identification information included in the received communication frame (step S34).

The determination of the warehousing permission condition is performed based on the mode type of the moving body, the type of the parking state, the type of the parking area, and the position information among the information included in the communication frame.
Specifically, the control unit 82 determines whether or not all of the following conditions a1 to d1 are satisfied using each of the above information (step S36).
The reason is that if all the following conditions a1 to d1 are all prepared, it can be determined that the autonomous driving vehicle 21 during autonomous driving has reached the entrance 7 to enter the dedicated area 9.

Condition a1: The mode type of the moving body is autonomous driving. Condition b1: The parking state type of the moving body is moving. Condition c1: The parking area type of the moving body is a dedicated area for automatic driving. Condition d1: The position information of the moving body is just before the entrance of the dedicated area (slightly north of the dedicated entrance 7 in the example of FIG. 1).

When the above determination result is affirmative, the control unit 82 generates a control frame including the “entry permission command” and transmits the control frame to the vehicle ID of the autonomous driving vehicle 21 (step S38). The process is terminated.
When the determination result is negative, the control unit 82 generates a control frame including the “entrance rejection command”, and transmits the control frame to the vehicle ID of the autonomous driving vehicle 21 (step S40). The process is terminated.

When the in-vehicle communication device 54 of the autonomous driving vehicle 21 receives the control frame, the control unit 105 of the in-vehicle communication device 54 notifies the central control unit 51 of the contents of the warehousing permission command or the warehousing rejection command included in the control frame. (Step S42).
Therefore, the autonomous driving vehicle 21 performs autonomous driving according to the command from the roadside communication device 31C. That is, the autonomous driving vehicle 21 takes action such as entering the dedicated area 9 when receiving a warehousing permission command and parking in the mixed area 8 when receiving a warehousing rejection command.

As described above, according to the wireless communication system of the present embodiment, the control unit 82 of the roadside communication device 31C is based on the mode type of the moving body, the type of the parking state, the type of the parking area, and the position information. Whether to enter the exclusive area 9 for 21 is determined.
Therefore, the warehousing management of the autonomous driving vehicle 21 to the dedicated area 9 can be automatically performed, and the operation cost of the parking lot 2 can be reduced.

In the wireless communication system according to the present embodiment, an agility operation command that does not take into account passenger comfort (drivability) may be included in the control frame including the warehousing permission command.
If the above command is included in the control frame, the autonomous driving vehicle 21 performs operations such as acceleration / deceleration in the dedicated area 9 more quickly than in the mixed area 8. For this reason, the time required for warehousing in the exclusive area 9 of the autonomous driving vehicle 21 can be shortened, and efficient parking management can be performed.

  Note that the warehousing management control in FIG. 12 may be executed not by the control unit 82 of the roadside communication device 31C but by the control unit 88 of the management device 38.

[Outgoing management control by roadside communication device]
FIG. 13 is a flowchart of the leaving management control executed by the roadside communication device 31B.
The example of FIG. 13 assumes a case where an unmanned autonomous driving vehicle 21 that operates in the autonomous driving mode is instructed to leave from a dedicated area 9 (see FIG. 1) on the south side of the site. Note that the circle in FIG. 13 means reception of a frame.

As shown in FIG. 13, the autonomous driving vehicle 21 first stops once inside the entrance 7 of the dedicated area 9 (step S50), and then the in-vehicle communication device 54 of the autonomous driving vehicle 21 transmits a communication frame ( Step S52).
Next, the control unit 82 of the roadside communication device 31B determines the leaving permission condition based on the identification information included in the received communication frame (step S54).

The determination of the leaving permission condition is performed based on the mode type of the moving body, the type of the parking state, the type of the parking area, and the position information among the information included in the communication frame.
Specifically, the control unit 82 determines whether or not all of the following conditions a2 to c2 are satisfied using each of the above information (step S56).
The reason is that if all of the following conditions a2 to c2 are all prepared, it can be determined that the autonomous driving vehicle 21 in autonomous driving has reached the entrance 7 in order to exit from the dedicated area 9.

Condition a2: The mode type of the moving body is autonomous driving. Condition b2: The parking state type of the moving body is moving. Condition c2: The position information of the moving body is before the exit of the dedicated area (in the example of FIG. 1). The reason is that the type of parking area is a dedicated area (the above-mentioned condition c1) is not a condition because this condition is entered in the warehousing management control (FIG. 12). This is because it is not necessary to make a further condition in the case of shipping.

When the above determination result is affirmative, the control unit 82 generates a control frame including a “shipping permission instruction” and transmits the control frame to the vehicle ID of the autonomous driving vehicle 21 (step S58). The process is terminated.
When the determination result is negative, the control unit 82 generates a control frame including the “exit refusal instruction”, and transmits the control frame to the vehicle ID of the autonomous driving vehicle 21 (step S60). The process is terminated.

When the in-vehicle communication device 54 of the autonomous driving vehicle 21 receives the control frame, the control unit 105 of the in-vehicle communication device 54 notifies the central control unit 51 of the content of the exit permission instruction or the exit rejection command included in the control frame. (Step S62).
Therefore, the autonomous driving vehicle 21 performs autonomous driving according to the command from the roadside communication device 31C. That is, the autonomous driving vehicle 21 exits from the dedicated area 9 when receiving an exit permission command, and stays in the exclusive area 9 when receiving an exit rejection command, and informs the owner or administrator that the exit has been rejected. Take actions such as notification by wireless communication.

As described above, according to the wireless communication system of the present embodiment, the control unit 82 of the roadside communication device 31C is dedicated for the autonomous driving vehicle 21 based on the mode type of the moving body, the type of the parking state, and the position information. Judgment of whether or not to leave the area 9 is made.
Therefore, it is possible to automatically manage the exit from the exclusive area 9 of the autonomous driving vehicle 21 and reduce the operation cost of the parking lot 2.

In the wireless communication system of the present embodiment, the control frame including the leaving permission command may include agility operation command cancellation not considering passenger comfort (drivability).
If the command cancellation is included in the control frame, the autonomous vehicle 21 does not perform the agile operation such as acceleration / deceleration performed in the dedicated area 9 in the mixed area 8. For this reason, the safety | security of the passage in the mixed area 8 can be improved, shortening the time required for leaving in the exclusive area 9 of the autonomous driving vehicle 21.

  13 may be executed not by the control unit 82 of the roadside communication device 31C but by the control unit 88 of the management device 38.

[Determination of charging order by management device]
FIG. 14 is a flowchart of charging order determination control executed by the management device 38.
As illustrated in FIG. 14, the control unit 88 of the management device 38 collects communication frames with a charging request from all communication frames received from the roadside communication device 31 in the field (step S80).

Whether or not the communication frame has a charging request can be determined by whether or not the replenishment necessity in the storage area A9 is “replenishment is necessary” and the energy type is “charging”.
Next, the control unit 88 extracts the scheduled delivery time tp and the desired charge amount Pd stored in the collected communication frame storage area A10 (step S82), and uses the following formula to estimate the power supply start time ts is calculated (step S84).

ts = tp−Pd / Vp
Vp is a charging speed required when the charging device 35 is used.
Next, the control unit 88 determines whether or not the expected power supply start time ts calculated by the above formula is a positive number (> 0) (step S86).
When the power supply start expected time ts is a positive number, it means that charging using the charging device 35 is in time for the scheduled delivery time tp.

When the above determination result is affirmative, the control unit 88 issues a charging instruction in ascending order of power supply start expected time ts (that is, in order of early power supply start) (step S88).
The reason is that, when charging is in time for the scheduled delivery time tp, it is considered fair to assign the charging order in the order of early power supply start.

If the determination result is negative, the control unit 88 issues a charging instruction set in advance according to the administrator policy (step S90).
The reason for this is that if the customer's request cannot be satisfied because the charging is not in time for the scheduled delivery time tp, it is possible to determine the charging order suitable for the parking lot 2 administrator policy.

As a determination method reflecting the administrator policy, for example, it is conceivable that the charging completion time is further predicted, and a charging instruction is issued from the vehicle 20 with the predicted charging completion time being earlier.
This policy is intended to improve the turnover rate of the charging facility in the parking lot 2 by giving priority to the vehicle 20 that finishes charging early.

As another determination method reflecting the administrator policy, for example, a charging instruction may be issued in order from the vehicle 20 with a long charging time.
This policy is intended to improve satisfaction with customers because the owner of the vehicle 20 with a long charging time is considered to be a customer who is likely to use the store for a long time.

  And the control part 88 produces | generates the control frame containing the charge instruction | indication determined as mentioned above, and transmits the produced | generated control frame addressed to vehicle ID of the transmission origin of a communication frame (step S92).

As described above, according to the wireless communication system of the present embodiment, the control unit 88 of the management device 38 determines the charging priority of the vehicle 20 based on the necessity of charging, the scheduled delivery time, and the desired charging amount included in the communication frame. The control frame including the determination result is transmitted to the vehicle 20 that is the transmission source of the communication frame.
Therefore, it is possible to notify the vehicle 20 of an appropriate charging order according to a fairness viewpoint or an administrator policy, and it becomes possible to appropriately manage the charging facility.

[Others]
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
For example, in the above-described embodiment, the charging area 10 is employed as a service area for the vehicle 20, but a refueling area may be provided.

  In the above-described embodiment, a wireless communication system in the parking lot 2 is assumed. However, information transmission processing by a mobile communication device (FIG. 9), safety support control by an in-vehicle communication device (FIG. 10), safety support control by a roadside communication device ( About FIG. 11), it can also carry out on a public road other than the parking lot 2, or a private road.

The embodiment of the present invention can be realized not only as a device including the above-described characteristic processing unit (such as a control unit and a communication unit) but also as a method using the characteristic processing as a step. It can be realized as a program for causing a computer to execute the steps.
In addition, the characteristic processing unit described above can be realized as a semiconductor integrated circuit that realizes part or all of the processing performed by the processing unit.

1: Building (store)
2: Parking lot 3: Fence 4: Entrance 5: Exit 6: Entrance 7: Exclusive entrance 8: Mixed area 9: Exclusive area 10: Charging area 11: Parking area in mixed area 12: Passage 13: Parking in exclusive area Section 14: Parking area of charging area 15: Management room 20: Vehicle 21: Autonomous driving vehicle 22: Supporting driving vehicle 23: Manual driving vehicle 24: Pedestrian 30: Management system 31: Roadside communication device 33: Monitoring camera 34: Speaker 35: Charging equipment 36: Traffic indicator 37: Router 38: Management device (server computer)
50: Control system 51: ECU
52: Bus 53: Input / output interface 54: In-vehicle communication device 55: Travel control unit 56: Steering control unit 57: Navigation device 58: First sensor 59: Second sensor 70: Portable terminal 81: Communication unit 82: Control unit 83 : Storage unit 84: antenna 88: control unit 89: internal bus 90: input / output interface 91: communication unit 92: drive 93: storage unit 94: output unit 95: input unit 104: communication unit 105: control unit 106: storage unit 107: Antenna 120: Communication unit 121: Control unit 122: Storage unit 123: Display unit 124: Operation unit 125: Antennas A1 to A10: Storage area

Claims (23)

A communication method for transmitting and receiving communication frames wirelessly,
A storage area for defining the operation mode of the mobile object is included in the communication frame, and information stored in the storage area includes identification information of the following mode types :
A storage area for defining the presence or absence of a passenger of the mobile body is included in the communication frame,
The stored information to be stored in the area, the rider with or one in which one of the identification information contained Ru communication method without.
Manual driving: Mode type in which the passenger performs all driving of the own vehicle Automatic driving: Mode type in which the vehicle control system automatically performs part or all of the driving of the own vehicle A communication method for transmitting and receiving communication frames wirelessly,
A storage area for defining the operation mode of the mobile object is included in the communication frame, and information stored in the storage area includes identification information of the following mode types :
A storage area for defining a parking area of the mobile body is included in the communication frame,
The The storage information stored in the area, either in a one of the identification information contained Ru communication method mixed area area will to park the movable body is not the case only area or for autonomous operation.
Manual driving: Mode type in which the passenger performs all driving of the own vehicle Automatic driving: Mode type in which the vehicle control system automatically performs part or all of the driving of the own vehicle The communication method according to claim 1 or 2 , wherein the information stored in the storage area includes identification information of the following mode types obtained by subdividing the automatic driving.
Autonomous driving: A mode type in which the vehicle control system automatically performs all of the driving of the own vehicle. Assisted driving: The vehicle control system automatically performs a part of the driving of the own vehicle and allows the passenger to drive the own vehicle. Supported mode types The communication method according to any one of claims 1 to 3, wherein the information stored in the storage area further includes identification information of the following mode type.
Pedestrian movement: A mode type indicating that a mobile object that is a pedestrian is moving A storage area for defining attributes of the driver of the mobile body is included in the communication frame,
The communication method according to any one of claims 1 to 4 , wherein the information stored in the storage area includes identification information as to whether or not the driver of the mobile body is a traffic weak person. A storage area for defining the parking state of the mobile body is included in the communication frame,
The communication method according to any one of claims 1 to 5, wherein the information stored in the storage area includes identification information indicating whether the moving body is moving or parked. A storage area for defining whether charging is required for the mobile body is included in the communication frame,
The communication method according to any one of claims 1 to 6 , wherein the information stored in the storage area includes identification information indicating whether charging of the mobile body is necessary or unnecessary. A roadside device that performs the communication method according to any one of claims 1 to 7 ,
A roadside device comprising a communication unit that receives the communication frame in which predetermined identification information is stored in one or a plurality of the storage areas from the mobile body, and transfers the received communication frame to another mobile body. A mobile communication device that performs the communication method according to any one of claims 1 to 7 ,
The identification information to be stored in one or a plurality of the storage areas is determined for the mobile body equipped with the mobile communication device, and the determined identification information is stored in the corresponding storage area to generate the communication frame A control unit,
And a communication unit that transmits the generated communication frame to another device. A vehicle control device that performs the communication method according to any one of claims 1 to 7 ,
A control unit that determines the identification information to be stored in one or a plurality of the storage areas for the host vehicle, stores the determined identification information in the corresponding storage area, and generates the communication frame;
A vehicle control device comprising: a communication unit that transmits the generated communication frame to another device. The communication unit can receive the communication frame generated by another mobile unit,
The vehicle control device according to claim 10 , wherein the control unit determines an operation content of the host vehicle based on a comparison between a mode type of the host vehicle and a mode type included in the received communication frame. The control unit determines, by the comparison, which traffic priority is higher between the host vehicle and the other moving body,
When at least one of the other mobile objects has a higher priority, at least one of control for notifying the driver of the host vehicle to that effect and control for suppressing travel of the host vehicle is executed. 11. The vehicle control device according to 11 . The following mode types are included in the mode types used for determining the priority of traffic,
The vehicle control device according to claim 12 , wherein the control unit determines that the traveling priority of the moving body is high in the order of manual driving> support driving> autonomous driving.
Manual driving: Mode type in which the passenger performs all driving of the own vehicle Assisted driving: Mode type in which the vehicle control system automatically performs part of the driving of the own vehicle and supports the driving of the own vehicle by the passenger Autonomous Driving: A mode type in which the vehicle control system automatically performs all driving of the vehicle. The following mode types are included in the mode types used for determining the priority of traffic,
The vehicle control device according to claim 12 or 13 , wherein the control unit determines that the moving body having a mode type of pedestrian movement has the highest pass priority.
Pedestrian movement: A mode type indicating that a mobile object that is a pedestrian is moving The information used for the determination of the traffic priority includes the attribute of the driver of the mobile object,
Wherein the control unit, whether the driver of the attribute or a vulnerable road user, the claims 12 to claims any of the traffic priority of the own vehicle and the other of the moving body is to high or determination condition 14. The vehicle control device according to any one of 14 . A vehicle equipped with the control device according to any one of claims 10 to 15 . A roadside device that performs the communication method according to any one of claims 1 to 7 ,
A communication unit that receives the communication frame including the mode type of the moving object, the type of parking state, the type of parking area, and position information;
Based on each information included in the received communication frame, it is determined whether or not the mobile body is allowed to enter an exclusive area for autonomous driving, and a control frame addressed to the mobile body including the determination result is transmitted to the communication unit. A roadside device comprising: A roadside device that determines whether a mobile object enters or leaves a parking area,
A communication unit that receives a communication frame including a mode type of the moving object, a type of parking state, a type of parking area, and position information;
Based on each information included in the received communication frame, it is determined whether or not the mobile body is allowed to enter a dedicated area for automatic driving, and a control frame including the determination result is sent to the communication section. A roadside device comprising: The roadside device according to claim 17 or 18 , wherein when the following conditions a1 to d1 are satisfied, the control unit includes a warehousing permission for the dedicated area in the control frame.
Condition a1: The mode type of the moving body is autonomous driving. Condition b1: The parking state type of the moving body is moving. Condition c1: The parking area type of the moving body is a dedicated area for automatic driving. Condition d1: The position information of the moving body is just before the entrance to the dedicated area. The roadside device according to claim 19 , wherein the control unit includes a command of an agile operation not considering passenger comfort in the control frame. The roadside device according to any one of claims 17 to 20 , wherein the control unit includes a determination result of permission to exit from the dedicated area when the following conditions a2 to c2 are satisfied. .
Condition a2: The mode type of the moving body is autonomous driving. Condition b2: The parking state type of the moving body is moving. Condition c2: The position information of the moving body is near the exit of the dedicated area. The roadside device according to claim 21 , wherein the control unit includes in the control frame a command release of an agile motion that does not consider passenger comfort. A roadside device that performs the communication method according to any one of claims 1 to 7 ,
A communication unit that receives the communication frame including whether or not the mobile body needs to be charged, a scheduled shipping time, and a desired charge amount;
A control unit that determines a charging priority of the mobile unit based on the information included in the received communication frame, and causes the communication unit to transmit a control frame including the determination result to the mobile unit; Roadside device provided.

Images