JP2001184594A - System and method for transferring data for vehicle and computer readable recording medium with program for computer to execute the same method recorded thereon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately perform the selection of road-vehicle communication and moving object communication desired by an end user at suitable time without being affected by the limit of a transfer enable data amount when transferring data while using both the road-vehicle communication and the mobile communication and preferentially using the road-vehicle communication. SOLUTION: In the data transfer system for vehicle, with which a transmitter/ receiver 3 for road-vehicle communication connected to on-vehicle equipment 2 and a portable telephone 4 are loaded on a vehicle 1 and the road-vehicle communication through road-side equipment 5 is preferentially performed in data transfer between the on-vehicle equipment 2 and an information center 15, when series of data are not completely transferred by the road-vehicle communication and the vehicle 1 dose not satisfy conditions such as within prescribed time or within a prescribed range and dose not meet the next road-side equipment 5, series of remaining data are transferred by suing the mobile communication.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a mobile communication terminal to a road-vehicle communication terminal such as a car navigation system or an in-vehicle personal computer mounted on a vehicle such as a private car or a truck, and through a roadside device. Data transfer system for performing road-vehicle communication with an information terminal connected to a network preferentially over mobile communication, a method thereof, and a computer-readable recording medium storing a program for causing a computer to execute the method It is about.

[0002]

2. Description of the Related Art FIG. 5 shows a VICS (Vehicle Information and Communication System).
1 is a diagram illustrating a configuration of a conventional vehicle data transfer system that implements em) by road-to-vehicle communication. In FIG. 5, a vehicle 101 includes an in-vehicle device 10 mounted on a dashboard or the like.
And a road-to-vehicle communication transceiver 103 connected to the on-vehicle device 102 and performing road-to-vehicle communication via a roadside device 105 provided on the roadside of the road on which the vehicle 101 runs.

[0003] In the road-vehicle communication, the vehicle 101 is connected to the roadside device 105.
Only when the vehicle encounters the wireless communication path 106 between the vehicle-mounted device 102 and the roadside device 105,
06 is formed, the roadside device 105, the telephone network 110
A communication path 120 with the information center 115 is formed via the PC, and data transfer between the vehicle-mounted device 102 and the information center 115 becomes possible. Road-to-vehicle communication of the wireless communication path 106 can be performed within a limited range of several meters to several tens of meters before and after the roadside device 105, and is performed using radio waves such as infrared rays, millimeter waves, and microwaves. DSRC (Narrow Area Communication: Dedica
ted Short Range Communication). This D
SRC is an ITS (Intelligent Transportation System: Intelligen)
International Standardization Organization is currently working on the establishment of international standardization as an important elemental technology for realizing the Transportation System.

The road-to-vehicle communication on the wireless communication path 106 is, as described above, a communication within a limited range of about several meters to several tens of meters. When the vehicle 101 passes through this range, Only communication can be performed. Usually, vehicle 101
Travels on the road at about several tens of m / s, and the time during which the road-to-vehicle communication with one roadside device 105 can be performed during normal traveling is as follows:
It is from several hundred milliseconds to several seconds. Therefore, the communication speed of road-vehicle communication is about 1 Mbps, and the amount of data that can be transferred in one road-vehicle communication is only about several Mbits.

As described above, although the amount of data that can be transferred in a single communication in this road-vehicle communication is at most about 1 Mbit, the roadside device 105 required for the road-vehicle communication is:
In reality, public institutions are installed as social infrastructure, and the telephone charges required for the roadside device 105 to communicate with the information center 115 via the telephone network 110 are also borne by the public institutions. The end user can use the road-to-vehicle communication free of charge, and its use value is great. In this case, the end user who owns the vehicle only needs to mount the road-vehicle communication transceiver 103 and the vehicle-mounted device 102 on the vehicle in order to use the road-vehicle communication.

On the other hand, FIG. 6 is a diagram showing a configuration of a conventional vehicle data transfer system that implements VICS using mobile communication. In FIG. 6, a vehicle 101 includes an in-vehicle device 102 mounted on a dashboard or the like, and
2, a mobile telephone network 1 having a base station (not shown)
07 and a mobile phone 104 that performs mobile communication via the mobile phone 104.

[0007] The on-vehicle device 102 establishes a wireless communication path 108 with the mobile phone network 107 via the mobile phone 104, forms a communication path 121 with the information center 115 via the telephone network 110, and And information center 115
Data transfer is performed between and. In the case of mobile communication, since the communicable area centered on the base station is a wide area, continuous communication is possible and the amount of data to be transferred is not limited.

[0008] In the case of mobile communication, since the usage fee of the mobile phone is always charged to the end user who owns the mobile phone, the usage cost is higher than the data transfer using the road-vehicle communication.

[0009]

As described above, data transfer using road-to-vehicle communication is once performed by the vehicle-mounted device 10.
2, the communication fee is free, and the end user can receive the service by VICS or the like at a low cost. However, the connection communication time with one roadside device 105 is short, and the data which can be physically transferred is provided. There was a problem that the amount was limited.

On the other hand, VICS using mobile communication
In the case of receiving services such as, etc., since continuous communication is possible, the amount of data that can be physically transferred is not limited,
Since the communication fee is expensive, the end user actually wants to use road-vehicle communication as much as possible.

[0011] The present invention has been made in view of the above,
When using both road-vehicle communication and mobile communication and performing data transfer with priority on road-vehicle communication, there is no effect of the limit on the amount of data that can be transferred, and the road-vehicle communication desired by the end user is not affected. It is an object of the present invention to provide a vehicle data transfer system and a method thereof capable of appropriately and appropriately selecting a mobile communication, and a computer-readable recording medium storing a program for causing a computer to execute the method.

[0012]

To achieve the above object, a vehicular data transfer system according to the present invention comprises a vehicle-mounted road-vehicle communication terminal for communicating with an information terminal connected to a network via a roadside device. A data transfer system for a vehicle, which connects a mobile communication terminal that communicates with the information terminal via a mobile base station and preferentially uses the road-to-vehicle communication terminal to perform data transfer processing with the information terminal. In, when a series of data transfer processing between the information terminal using the road-to-vehicle communication terminal is not completed, and the vehicle does not encounter the roadside device within a predetermined time, using the mobile communication terminal Data transfer control means for performing the remaining series of data transfer processing with the information terminal is provided.

According to the present invention, the data transfer control means does not complete a series of data transfer processing with the information terminal on the network using the road-to-vehicle communication terminal, and the vehicle is controlled by the roadside device within a predetermined time. Is not encountered, a series of remaining data transfer processing is performed with the information terminal using the mobile communication terminal.

[0014] The vehicle data transfer system according to the next invention is a vehicle-to-vehicle inter-vehicle communication terminal, which communicates with an information terminal connected to a network via a roadside device, to the information terminal via a mobile base station. In a vehicle data transfer system that connects a mobile communication terminal that communicates with the information terminal and performs data transfer processing with the information terminal using the road-to-vehicle communication terminal with priority, the information using the road-to-vehicle communication terminal If a series of data transfer processing to and from the device is not completed,
Whether or not the vehicle encounters the roadside device based on condition information including position information of the roadside device, position information of the vehicle, speed information of the vehicle, and destination information set by a driver of the vehicle. Data transfer control means for performing the remaining series of data transfer processing with the information terminal using the mobile communication terminal when the vehicle is predicted not to encounter the roadside device. It is characterized by having.

According to the invention, when the data transfer control means does not complete a series of data transfer processing with the information terminal on the network using the road-to-vehicle communication terminal, the position information of the roadside device, the position of the vehicle, Information, speed information of the vehicle, based on the condition information including the destination information set by the driver of the vehicle, predicts whether or not the vehicle will encounter the roadside machine, predicts that the vehicle will not encounter the roadside machine In this case, the remaining series of data transfer processing is performed with the information terminal using the mobile communication terminal.

[0016] In the vehicle data transfer system according to the next invention, in the above invention, when the data transfer control means predicts that the vehicle can encounter the roadside machine, the data transfer control means drives a route to the encountered roadside machine. Voice information generating means for generating voice information to guide the person, when the route and the actual route of the vehicle are different, using the mobile communication terminal between the information terminal and the remaining series Is performed.

According to the present invention, when the voice information generating means of the data transfer control means predicts that the vehicle can encounter the roadside device, the voice information for guiding the driver to the route to the roadside device to be encountered is provided. And the data transfer control means causes the mobile communication terminal to perform the remaining series of data transfer processing with the information terminal on the network when the route and the actual route of the vehicle are different. ing.

The vehicle data transfer method according to the next invention is directed to a vehicle-to-vehicle road-to-vehicle communication terminal that communicates with an information terminal connected to a network via a roadside device, via the mobile base station. A vehicle data transfer method for connecting a mobile communication terminal that communicates with the information terminal and performing data transfer processing with the information terminal using the road-to-vehicle communication terminal preferentially, wherein the information using the road-to-vehicle communication terminal A first determining step of determining whether or not a series of data transfer processes with a terminal has been completed; and if the first determining step determines that the series of data transfer processes has not been completed, the vehicle A second determination step of determining whether or not the vehicle will encounter a roadside device within a predetermined time, and if it is determined that the vehicle does not encounter a roadside device in the second determination process, the mobile communication terminal information Characterized in that it comprises a data transfer step of causing the remaining of the series of data transfer processing between the end.

According to the present invention, the first determining step determines whether or not a series of data transfer processing with the information terminal on the network using the road-to-vehicle communication terminal has been completed. If it is determined by the determining step that the series of data transfer processing is not completed by the first determining step, it is determined whether or not the vehicle encounters a roadside device within a predetermined time. When it is determined in the second determination step that the roadside device is not encountered, the remaining series of data transfer processing is performed with the information terminal using the mobile communication terminal.

[0020] The vehicle data transfer method according to the next invention is characterized in that a vehicle-to-vehicle inter-vehicle communication terminal, which communicates with an information terminal connected to a network via a roadside device, to the information terminal via a mobile base station. A vehicle data transfer method for connecting a mobile communication terminal that communicates with the information terminal and performing data transfer processing with the information terminal using the road-to-vehicle communication terminal preferentially, wherein the information using the road-to-vehicle communication terminal A judging step of judging whether or not a series of data transfer processing with the terminal has been completed, and a position of the roadside device when it is judged by the first judging step that the series of data transfer processing has not been completed. Predicting whether the vehicle will encounter the roadside device based on condition information including information, position information of the vehicle, speed information of the vehicle, and destination information set by a driver of the vehicle. And performing the remaining series of data transfer processing with the information terminal using the mobile communication terminal when the vehicle is predicted not to encounter the roadside device by the encounter prediction step. And a data transfer step.

According to the present invention, the determining step determines whether or not a series of data transfer processing with the information terminal on the network using the road-to-vehicle communication terminal has been completed. When it is determined by the first determining step that the series of data transfer processing is not completed,
Roadside machine position information, vehicle position information, vehicle speed information,
Based on condition information including destination information set by the driver of the vehicle, predicting whether the vehicle will encounter a roadside machine,
When the vehicle predicts that the vehicle will not encounter the roadside device by the encounter prediction step by the data transfer step, a remaining series of data transfer processing with the information terminal is performed using a mobile communication terminal. I have to.

[0022] In the vehicle data transfer method according to the next invention, in the above invention, when the data transfer step predicts that the roadside machine can be encountered, a driver's route to the encountered roadside machine is changed by the driver. A voice guidance step of generating voice information to be guided to, a route determination step of determining whether or not the route guided by the voice guidance step is different from the actual route of the vehicle; and And a data transfer processing step of performing the remaining series of data transfer processing with the information terminal using the mobile communication terminal when the route is different from the actual route.

According to the present invention, when it is predicted that the voice guidance step of the data transfer step can encounter a roadside machine,
Generates voice information for guiding the driver to the route to the roadside machine to be encountered, and the route determining step determines whether the route guided by the voice guiding step is different from the actual route of the vehicle. When the data transfer processing step determines that the route and the actual route are different by the route determination step, the mobile communication terminal performs the remaining series of data transfer processing with the information terminal on the network using the mobile communication terminal. I try to make it.

According to the present invention, a program for causing a computer to execute the method according to any one of claims 4 to 6 is recorded, so that the program becomes machine-readable. 6 can be realized by a computer.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a vehicle data transfer system according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing the overall configuration of a vehicle data transfer system according to an embodiment of the present invention. FIG.
Is a system that uses VICS services by using both road-vehicle communication and mobile communication. In FIG. 1, a vehicle 1 is a vehicle-mounted device 2 provided on a dashboard or the like.
A road-to-vehicle communication transceiver 3 that is connected to the on-vehicle device 2 and performs road-to-vehicle communication via a roadside device 5 provided on the roadside of the road on which the vehicle 1 travels; And a mobile phone 4 that performs mobile communication via a base station (not shown) in the mobile phone network 7.

In the road-vehicle communication, the wireless communication path 6 between the vehicle-mounted device 2 and the roadside device 5 can be formed only when the vehicle 1 encounters the roadside device 5. To
A communication path 20 is formed between the roadside device 5 and an information center 15 that collects and distributes road traffic information via the telephone network 10.
And data center 15 can be transferred. The road-to-vehicle communication of the wireless communication path 6 can be performed within a limited range of about several meters to several tens of meters before and after the roadside device 5, and the amount of data that can be transferred by one road-to-vehicle communication is several M bits. It is limited to the extent.

On the other hand, mobile communication can be carried out whenever a vehicle exists in a wide communication area centered on a base station. That is, the in-vehicle device 2 includes the mobile phone 4
A wireless communication path 8 is connected to the mobile telephone network 7 through the telephone network, a communication path 21 to the information center 15 is formed through the telephone network 10, and data is transferred between the vehicle-mounted device 2 and the information center 15. It can be performed. In the case of mobile communication, a communicable area centered on a base station is usually several tens km or more, continuous communication is possible, and there is no limitation on the amount of data to be transferred.

The in-vehicle device 2 has a data transfer control unit 45. As will be described later, the data transfer control unit 45 presupposes that priority is given to road-to-vehicle communication. Information center 15 by selecting and switching timely and appropriately.
Is controlled to complete the data transfer with.

FIG. 2 is a diagram showing a detailed configuration of the vehicle-mounted device 2. The data processing unit 30 of the on-vehicle device 2 is realized by a microprocessor or a memory, and executes various data processing. In particular, the data transfer control unit 45 in the data processing unit 30
Performs timely and appropriate selection switching between the above-mentioned road-to-vehicle communication and mobile communication, and performs data transfer control with the information center 15. The data transfer control process of the data transfer control unit 45 is realized by a program.

The data reading section 31 reads the contents of a CD-ROM or DVD-ROM storing various data or programs necessary for operating the vehicle-mounted device 2. The data display / input / output unit 32 is realized by a liquid crystal display device, a speaker, an input keypad, and the like, and outputs image information and voice information to a driver of the vehicle 1 or receives an input from the driver. The peripheral device input / output control unit 33 controls input / output with various devices installed around the vehicle-mounted device 2. In FIG. 2, the peripheral device input / output unit 33 connects the transceiver 3 for road-vehicle communication and the mobile phone 4 via communication lines 37 and 38, respectively.

The data storage unit 34 is realized by a large-capacity memory such as a hard disk drive, and stores various information necessary for the operation of the vehicle-mounted device 2. The data storage unit 34
Specifically, road map information 40 and roadside machine position information 41 are stored. The road map information 40 and the roadside machine position information 41 are created by converting the data read from the CD-ROM or DVD-ROM by the data reading unit 31 and converting the data by the data processing unit 30 as necessary. is there. The current position capturing unit 36 is realized by an acceleration sensor or a GPS (Global Positioning System), and acquires the current geographical position and speed (speed and traveling direction) of the vehicle 1. The data bus 35 is a bus that connects the components in the vehicle-mounted device 2 to each other and enables data exchange.

Next, the processing procedure of the data transfer control unit 45 will be described with reference to the flowcharts shown in FIGS. FIG. 3 is a flowchart illustrating a processing procedure when the vehicle-mounted device 2 transmits data to the information center 15. In FIG. 3, the data transfer control unit 45 performs a process of transmitting data via the roadside device 5 (step S1).
1). That is, the data transfer control unit 45 establishes the wireless communication path 6 between the roadside-vehicle communication transceiver 3 and the roadside device 5,
Further, by establishing the communication path 20, data is transferred from the vehicle-mounted device 2 to the information center 15 side.

Thereafter, the data transfer control unit 45 determines whether or not transmission of all data has been completed (step S1).
2). When transmission of all data has been completed (step S
On the other hand, the process is terminated on (12, YES), and if the transmission of all data is not completed (step S12, NO), the process further proceeds to step S13. The determination of whether or not transmission of all data in step S12 is completed
If the next roadside device has not been encountered and all data cannot be transmitted even if a predetermined time has elapsed since the time when the data to be transmitted occurred in the on-vehicle device 2, the transmission of all data has not been completed. It is judged as.

Thereafter, the data transfer control unit 45 performs an encounter prediction process with the roadside device (step S13). In the process of predicting the encounter with the roadside device, information on the current position and the speed (speed and traveling direction) of the vehicle 1 acquired by the current position capturing unit 36 is obtained, and this information and the road map information in the data storage unit 34 are obtained. 40, and recognizes the current position and traveling direction of the vehicle 1 on the road map. Further, the road map information 40 and the roadside machine position information 41 are combined to detect a roadside machine within a certain range from the current position, for example, within a radius of 5 km. Is predicted not to be encountered, and if the roadside aircraft is present within a radius of 5 km, it is predicted that the roadside aircraft can be encountered.

Thereafter, it is determined whether or not it is possible to encounter the roadside machine based on the prediction result of the encounter with the roadside machine (step S1).
4). When it is not possible to encounter the roadside machine (step S14,
NO), the communication path 2 for mobile communication via the mobile phone 4
No. 1 is formed, and a process of transferring the remaining data to the information center 15 is performed (step S19), and this process ends.

On the other hand, when it is possible to encounter the roadside machine (step S14, YES), the optimum roadside machine and the optimum route to the optimum roadside machine are selected from the detected roadside machines (step S14). S15). When the driver has input conditions such as a destination in advance, the optimum roadside device is selected in consideration of these conditions.
For example, when the roadside device exists on the route from the current location to the destination, the roadside device on this route and closest to the current location is selected. If the driver has not input the conditions such as the destination in advance, the shortest roadside machine from the current location is selected as the optimum roadside machine, and the shortest route from the current location to the optimum roadside machine is optimized. Select as a route.

Thereafter, the data transfer control section 45 gives voice guidance to the driver to instruct the optimum route to be encountered by the selected optimum roadside device (step S16). The voice information for voice guidance is transmitted to the data display / input / output unit 3.
2 output. For example, the driver is notified by voice such as "Please turn left at the next intersection."

Thereafter, it is determined whether or not a forced rejection has been input (step S17). The forced rejection is, for example, a case where the driver recognizes voice guidance on the route until the vehicle reaches the optimum roadside machine, but explicitly refuses to ignore the voice guidance. Specifically, a special key on the input keypad of the data display / input / output unit 32 is pressed. If a forced rejection is input (step S17, YES), a process for forming a communication path 21 for mobile communication via the mobile phone 4 and transferring the remaining data to the information center 15 is performed (step S17). S1
9), end this processing.

When there is no forced rejection input (step S1)
(7, NO), it is further determined whether or not the vehicle 1 is traveling on the optimal route (step S18). The determination as to whether or not the vehicle is traveling on the optimal route is performed by comparing the actual route of the vehicle 1 currently traveling with the optimal route, and if not coincident, the vehicle 1 is not traveling on the optimal route. It is determined that the vehicle 1 is moving on the optimal route when they match. The reason for determining whether or not the vehicle is traveling on the optimal route is to determine whether or not the driver has refused to provide voice guidance for the route up to encountering the optimal roadside aircraft, although it is not explicit. is there.

If the vehicle 1 is traveling on the optimum route (step S18, YES), the process goes to step S11 to perform data transmission processing using the roadside machine in order to encounter the optimum roadside machine. Does not move on the optimal route (step S18, NO), the mobile station 4 does not encounter the optimal roadside device, and thus forms a communication path 21 for mobile communication via the mobile phone 4, and transfers the remaining data to the information center 15 Is performed (step S19), and the process ends.

Next, a processing procedure when the vehicle-mounted device 2 receives data from the information center 15 will be described with reference to a flowchart shown in FIG. This data reception process is the same except that the data reception is performed instead of the data transmission shown in FIG.
That is, in FIG. 4, the data transfer control unit 45 performs a process of receiving data via the roadside device 5 (step S2).
1). That is, the data transfer control unit 45 establishes the wireless communication path 6 between the roadside-vehicle communication transceiver 3 and the roadside device 5,
Further, by establishing the communication path 20, the information center 1
The data transferred from the device 5 to the vehicle-mounted device 2 is received.

Thereafter, the data transfer control section 45 determines whether or not reception of all data has been completed (step S2).
2). When all data has been received (step S
On the other hand, the process is terminated at step S22 (YES), and if the reception of all data is not completed (step S22, NO), the process further proceeds to step S23. The determination as to whether or not the reception of all data in step S22 is completed
Even if a predetermined period of time has elapsed since the data reception occurred in the on-vehicle device 2, if the next roadside device has not been encountered and all data cannot be received, it is determined that all data has not been received. I do.

Thereafter, the data transfer control unit 45 performs an encounter prediction process with the roadside device (step S23). In the process of predicting the encounter with the roadside device, information on the current position and the speed (speed and traveling direction) of the vehicle 1 acquired by the current position capturing unit 36 is obtained, and this information and the road map information in the data storage unit 34 are obtained. 40, and recognizes the current position and traveling direction of the vehicle 1 on the road map. Further, the road map information 40 and the roadside machine position information 41 are combined to detect a roadside machine within a certain range from the current position, for example, within a radius of 5 km. Is predicted not to be encountered, and if the roadside aircraft is present within a radius of 5 km, it is predicted that the roadside aircraft can be encountered.

Thereafter, it is determined whether or not it is possible to encounter the roadside machine based on the result of the prediction of the encounter with the roadside machine (step S2).
4). When it is not possible to encounter the roadside machine (step S24,
NO), the communication path 2 for mobile communication via the mobile phone 4
No. 1 is formed, a process of receiving the remaining data from the information center 15 is performed (step S29), and this process ends.

On the other hand, when it is possible to encounter the roadside machine (step S24, YES), the optimum roadside machine and the optimum route to this optimum roadside machine are selected from the detected roadside machines (step S24). S25). When the driver has input conditions such as a destination in advance, the optimum roadside device is selected in consideration of these conditions.
For example, when the roadside device exists on the route from the current location to the destination, the roadside device on this route and closest to the current location is selected. If the driver has not input the conditions such as the destination in advance, the shortest roadside machine from the current location is selected as the optimum roadside machine, and the shortest route from the current location to the optimum roadside machine is optimized. Select as a route.

Thereafter, the data transfer control section 45 gives voice guidance to the driver in order to instruct the optimum route to be encountered by the selected optimum roadside device (step S26). The voice information for voice guidance is transmitted to the data display / input / output unit 3.
2 output. For example, the driver is notified by voice such as "Please turn left at the next intersection".

Thereafter, it is determined whether or not a forced rejection has been input (step S27). The forced rejection is, for example, a case where the driver recognizes voice guidance on the route until the vehicle reaches the optimum roadside machine, but explicitly refuses to ignore the voice guidance. Specifically, a special key on the input keypad of the data display / input / output unit 32 is pressed. If there is an input of the forced rejection (step S27, YES), a process of forming a communication path 21 for mobile communication via the mobile phone 4 and receiving the remaining data from the information center 15 is performed (step S27). S
29), end this processing.

When there is no forced rejection input (step S2)
(7, NO), it is further determined whether or not the vehicle 1 is traveling on an optimal route (step S28). The determination as to whether or not the vehicle is traveling on the optimal route is performed by comparing the actual route of the vehicle currently traveling with the optimal route, and determining that the vehicle 1 is not traveling on the optimal route if they do not match. It is determined that the vehicle 1 is moving on the optimum route when the two are coincident. The reason for determining whether or not the vehicle is traveling on the optimal route is to determine whether or not the driver has refused to provide voice guidance for the route up to encountering the optimal roadside aircraft, although it is not explicit. is there.

If the vehicle 1 is traveling on the optimal route (step S28, YES), the process goes to step S21 to perform data reception processing using the roadside device to encounter the optimal roadside device. If No. 1 is not traveling on the optimal route (step S28, NO), it does not encounter the optimal roadside device, so that the mobile communication channel 21
Is formed, and a process of receiving the remaining data from the information center 15 is performed (step S29), and the process ends.

In selecting the optimum roadside device, in the above-described processing, the destination is given as an example taking conditions into consideration. However, the present invention is not limited to this, and various conditions for selecting the optimum roadside device may be provided. You may. In addition, although the optimum roadside machine is only one roadside machine, a plurality of roadside machines may be selected as appropriate roadside machines.

Further, in the above-described embodiment, the timely and appropriate switching control between the roadside-vehicle communication and the mobile body communication using the roadside device is performed, but other short-range communication corresponding to the roadside-vehicle communication is performed. It is apparent that the present invention can also be applied to a vehicle data transfer system that uses both a mobile communication and a wide area communication such as mobile communication.

According to this embodiment, when all data cannot be transferred by road-to-vehicle communication, mobile communication is used, so that transfer data can be transmitted and received reliably. In addition, since the roadside device 5 that the vehicle 1 can encounter is predicted, it is possible to appropriately select between road-vehicle communication and mobile communication. Furthermore, even when rapid data transfer cannot be performed by road-to-vehicle communication, rapid data transfer using mobile communication can be performed by setting conditions of a driver or the like. Further, since the voice guidance up to the optimum roadside device is automatically recognized based on the moving route of the vehicle 1 without explicitly rejecting it, the timeliness of data transfer can be maintained.

[0054]

As described above, according to the present invention, the data transfer control means does not complete a series of data transfer processing with the information terminal on the network using the road-to-vehicle communication terminal, and When the vehicle does not encounter the roadside device within a predetermined time, the remaining series of data transfer processing is performed with the information terminal using the mobile communication terminal, so that the data that can be physically transferred is There is an effect that reliable data transfer using mobile communication can be performed in a timely and appropriate manner while effectively using road-vehicle communication whose amount is limited.

According to the next invention, when the data transfer control means does not complete a series of data transfer processing with the information terminal on the network using the road-to-vehicle communication terminal, the position information of the roadside device, the vehicle Predicts whether or not the vehicle will encounter a roadside aircraft based on condition information including location information, vehicle speed information, and destination information set by the driver of the vehicle, and predicts that the vehicle will not encounter a roadside aircraft In this case, since the remaining series of data transfer processing is performed with the information terminal using the mobile communication terminal, road-vehicle communication in which the amount of data that can be physically transferred is limited. There is an effect that the mobile communication can be selectively used in a timely and appropriate manner according to the driver's request while being effectively used.

According to the next invention, when the voice information generation means of the data transfer control means predicts that the vehicle can encounter the roadside machine, the voice for guiding the driver to the route to the encountered roadside machine is provided. Information, and the data transfer control means causes the mobile communication terminal to perform the remaining series of data transfer processing with the information terminal on the network when the route is different from the actual route of the vehicle. In this way, the effective use of road-to-vehicle communication where the amount of data that can be physically transferred is limited, and the selective use of mobile communication according to the driver's demands is automatically performed without imposing a load on the driver. The effect that it can be performed is produced.

According to the next invention, in the first determining step, it is determined whether or not a series of data transfer processing with the information terminal on the network using the road-vehicle communication terminal has been completed. When the first determining step determines that the series of data transfer processing is not completed, the determining step determines whether or not the vehicle encounters a roadside device within a predetermined time. If it is determined in the second determination step that the roadside device is not encountered, the remaining series of data transfer processing with the information terminal is performed using a mobile communication terminal. It is possible to effectively use road-to-vehicle communication in which the amount of data that can be transferred is limited, and perform timely and appropriate data transfer using mobile communication.

According to the next invention, by the determining step,
Determine whether a series of data transfer processing between the information terminal on the network using the road-to-vehicle communication terminal has been completed,
If it is determined by the encounter prediction step that the series of data transfer processing is not completed by the first determination step, the information is set by the roadside machine position information, the vehicle position information, the vehicle speed information, and the vehicle driver. If the vehicle predicts whether the vehicle will encounter the roadside machine based on the condition information including the destination information, and the data transfer step, when it is predicted by the encounter prediction step that the vehicle does not encounter the roadside machine, Since the remaining series of data transfer processing is performed with the information terminal using a mobile communication terminal, the road-vehicle communication in which the amount of physically transferable data is limited is effectively used. On the other hand, there is an effect that the selective use of the mobile communication according to the driver's request can be performed in a timely and appropriate manner.

According to the next invention, when the voice guidance step in the data transfer step predicts that the vehicle can encounter the roadside machine, the voice information for guiding the driver to the route to the encountered roadside machine. And the route determining step determines whether the route guided by the voice guiding step is different from the actual route of the vehicle, and the data transfer processing step determines the route and the actual route by the route determining step. Is different from the above, the remaining series of data transfer processing is performed with the information terminal on the network using the mobile communication terminal, so that the amount of data that can be physically transferred is limited. There is an effect that the selective use of the mobile communication according to the driver's request can be automatically performed without imposing a load on the driver while effectively using the inter-vehicle communication.

According to the next invention, a program for causing a computer to execute the method according to any one of claims 4 to 6 is recorded, so that the program becomes machine-readable. There is an effect that a recording medium capable of realizing the operations 4 to 6 by a computer can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a vehicle data transfer system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a detailed configuration of a vehicle-mounted device of the vehicle data transfer system shown in FIG.

FIG. 3 is a flowchart illustrating a data transmission processing procedure performed by a data transfer control unit.

FIG. 4 is a flowchart illustrating a data reception processing procedure performed by a data transfer control unit.

FIG. 5 is a diagram showing a configuration of a conventional vehicle data transfer system that implements VICS by road-to-vehicle communication.

FIG. 6 is a diagram illustrating a configuration of a conventional vehicle data transfer system that implements VICS using mobile communication.

[Explanation of symbols]

1 vehicle, 2 vehicle-mounted device, 3 road-to-vehicle communication transceiver, 4
Mobile phone, 5 roadside machine, 6, 8 wireless communication path, 7 mobile phone network, 10 telephone network, 15 information center, 20, 2
1 communication path, 30 data processing section, 31 data reading section, 32 data display / input / output section, 33 peripheral device input / output section, 34 data storage section, 35 data bus, 36
Current position acquisition unit, 37, 38 communication line, 45 data transfer control unit.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 7/38 H04B 7/26 109M H04L 12/28 H04L 11/00 310B F-term (Reference) 2F029 AA02 AB01 AB07 AB13 AC02 AC09 AC13 AC18 5H180 AA01 BB04 BB05 BB13 FF04 FF05 FF12 FF13 FF25 FF27 FF33 5K033 AA06 AA09 BA06 CB06 DA19 DB21 EA03 EB02 5K067 AA01 AA33 BB04 BB21 DD13 DD51 EE03 EE10 GG10

Claims (7)

[Claims] 1. An on-vehicle road-to-vehicle communication terminal that communicates with an information terminal connected to a network via a roadside device,
In a vehicle data transfer system that connects a mobile communication terminal that communicates with the information terminal via a mobile base station and performs data transfer processing with the information terminal using the road-to-vehicle communication terminal preferentially, When a series of data transfer processing with the information terminal using the road-to-vehicle communication terminal is not completed, and the vehicle does not encounter a roadside device within a predetermined time, the information is transmitted using the mobile communication terminal. A data transfer system for a vehicle, comprising: a data transfer control unit for performing the remaining series of data transfer processing with a terminal. 2. A vehicle-to-vehicle road-to-vehicle communication terminal that communicates with an information terminal connected to a network via a roadside device,
In a vehicle data transfer system that connects a mobile communication terminal that communicates with the information terminal via a mobile base station and performs data transfer processing with the information terminal using the road-to-vehicle communication terminal preferentially, When a series of data transfer processing between the information terminal using the road-to-vehicle communication terminal is not completed, the position information of the roadside machine, the position information of the vehicle, the speed information of the vehicle, the driver of the vehicle The mobile communication terminal predicts whether the vehicle will encounter the roadside device based on the condition information including the set destination information, and predicts that the vehicle will not encounter the roadside device, A data transfer control means for performing the remaining series of data transfer processing with the information terminal by using the data transfer system. 3. A voice information generating means for generating, when predicting that the roadside machine can be encountered, a driver to guide a driver to a route to the encountered roadside machine. And when the route is different from the actual route of the vehicle, the remaining series of data transfer processing is performed with the information terminal using the mobile communication terminal. 2. The vehicle data transfer system according to claim 1. 4. An on-vehicle road-to-vehicle communication terminal that communicates with an information terminal connected to a network via a roadside device,
A vehicle data transfer method for connecting a mobile communication terminal that communicates with the information terminal via a mobile base station and performing data transfer processing with the information terminal using the road-to-vehicle communication terminal preferentially, A first determining step of determining whether or not a series of data transfer processing with the information terminal using the road-to-vehicle communication terminal has been completed; and When it is determined that the vehicle is not completed, a second determining step of determining whether the vehicle encounters a roadside machine within a predetermined time; and when it is determined that the vehicle does not encounter a roadside machine by the second determining step. A data transfer step of performing the remaining series of data transfer processing with the information terminal using the mobile communication terminal. 5. An on-vehicle road-to-vehicle communication terminal that communicates with an information terminal connected to a network via a roadside device,
A vehicle data transfer method for connecting a mobile communication terminal that communicates with the information terminal via a mobile base station and performing data transfer processing with the information terminal using the road-to-vehicle communication terminal preferentially, A determining step of determining whether or not a series of data transfer processing with the information terminal using the road-to-vehicle communication terminal is completed; and if the series of data transfer processing is not completed by the first determining step. If it is determined that the vehicle is the roadside device based on condition information including position information of the roadside device, position information of the vehicle, speed information of the vehicle, and destination information set by a driver of the vehicle. An encounter prediction step of predicting whether or not the vehicle will encounter the roadside machine. Vehicle data transfer method which is characterized in that the containing, a data transfer step of causing the sequence of data transfer processing. 6. The data transfer step includes: when predicting that the roadside machine can be encountered, a voice guiding step of generating voice information for guiding a driver to a route to the encountered roadside machine; A route determining step of determining whether the route guided by the voice guiding step is different from the actual route of the vehicle; and if the route and the real route are different in the route determining step, the mobile communication terminal The data transfer processing method for a vehicle according to claim 5, further comprising: a data transfer processing step of performing the remaining series of data transfer processing with the information terminal using the data transfer method. 7. A computer-readable recording medium on which a program for causing a computer to execute the method according to claim 4 is recorded.