JP2021164138A - On-vehicle charge payment device, portable communication terminal, charge payment system, and terminal control program - Google Patents

Abstract

To provide an on-vehicle charge payment device less susceptible to interference from portable communication terminals brought into the vehicle.SOLUTION: An on-vehicle device 30 for charge payment mounted on a vehicle, includes a roadside unit communication unit 31 that communicates with a roadside device for charge payment installed on the roadside when a vehicle travels on a toll road; a terminal communication unit 32 that communicates with the portable communication terminal in a frequency band different from the frequency band that communicates with the roadside device; and a tollhouse area determination unit 35 that determines that the vehicle has entered the tollhouse area where communication with the roadside unit is possible. The terminal communication unit 32 transmits a request signal to request interference avoidance measures to the portable communication terminal based on the determination by the tollhouse area determination unit that the vehicle has entered the tollhouse area.SELECTED DRAWING: Figure 2

Description

The present invention relates to an in-vehicle device for charge settlement, a mobile communication terminal, a charge settlement system including the in-vehicle device for charge settlement and the mobile communication terminal, and a terminal control program executed by the mobile communication terminal.

Patent Document 1 discloses an in-vehicle communication device for a toll collection system. The in-vehicle communication device disclosed in Patent Document 1 wirelessly communicates at a frequency of 5.8 GHz in order to communicate with the roadside device. In addition, wireless communication is also performed at frequencies in the 700 MHz band. The 700MHz band is a frequency band for inter-vehicle communication. In addition, inter-vehicle communication can also use frequencies in the 5.8 GHz band. Then, if it is determined that the user has entered the area that communicates with the roadside device installed at the tollhouse while communicating between vehicles using the 5.8 GHz band channel, the frequency channel used for inter-vehicle communication is 700 MHz. Switch to obi. As a result, it is possible to prevent the road-to-vehicle communication and the vehicle-to-vehicle communication from interfering with each other.

JP-A-2019-179472

The technology disclosed in Patent Document 1 is a technology for preventing the vehicle-mounted communication device from interfering with the road-to-vehicle communication carried out by the own device due to the vehicle-to-vehicle communication carried out by the own device. However, mobile communication terminals such as smartphones may be brought into the vehicle. The frequency band used by mobile communication terminals is often different from the frequency band used in road-to-vehicle communication. If the frequency band used by the mobile communication terminal is different from the frequency band used for road-to-vehicle communication, interference due to the fundamental wave does not occur. However, the harmonics of the radio waves used by the mobile communication terminal may interfere with the radio waves used in the road-to-vehicle communication.

This disclosure was made based on this circumstance, and the purpose of the present disclosure is to provide radio waves to the on-board unit for charge settlement, which is less susceptible to interference from the mobile communication terminal brought into the vehicle, and the on-board unit for charge settlement. The purpose of the present invention is to provide a mobile communication terminal that is less likely to interfere, a charge settlement system including an on-board unit for charge settlement and a mobile communication terminal, and a terminal control program executed by the mobile communication terminal.

The above object is achieved by a combination of the features described in the independent claims, and the sub-claims provide further advantageous specific examples. The reference numerals in parentheses described in the claims indicate, as one embodiment, the correspondence with the specific means described in the embodiments described later, and do not limit the disclosed technical scope.

One disclosure relating to the on-board unit for charge settlement for achieving the above purpose is
An on-board unit for toll settlement (31) equipped with a roadside device communication unit (31) that is mounted on the vehicle (C) and communicates with a roadside device (20) for toll settlement installed on the roadside when the vehicle passes through a toll road. 30)
A terminal communication unit (32) that communicates with a mobile communication terminal in a frequency band different from the frequency band that communicates with the roadside device.
It is equipped with a tollhouse area judgment unit (35) that determines that you have entered the tollhouse area that communicates with roadside equipment.
The terminal communication unit transmits a request signal requesting interference avoidance measures to the mobile communication terminal based on the determination that the tollhouse area determination unit has entered the tollhouse area.

It is difficult for a mobile communication terminal that does not cause interference due to the fundamental wave and may interfere with the communication of the roadside device communication unit due to harmonics to detect radio wave interference in the communication unit that transmits and receives the fundamental wave. In addition, the roadside dexterity communication unit cannot communicate with the mobile communication terminal.

Therefore, the on-board unit for charge settlement includes a terminal communication unit that communicates with the mobile communication terminal in a frequency band different from the frequency band that communicates with the roadside device. By providing this terminal communication unit, it is possible to transmit a request signal requesting interference avoidance measures to a mobile communication terminal that may interfere with the communication of the roadside device communication unit due to harmonics.

The mobile communication terminal that has received this request signal can be expected to implement interference avoidance measures. Therefore, the on-board unit for charge settlement is less likely to be interfered with by the mobile communication terminal brought into the vehicle.

One disclosure relating to a mobile communication terminal for achieving the above object is a mobile communication terminal to be combined with the above-mentioned on-board unit for charge settlement. The mobile communication terminal is
A mobile communication terminal (40) having a first mobile communication unit (41) whose harmonics are a frequency band used for communication between a roadside device for toll settlement and an in-vehicle device for toll settlement.
The second mobile communication unit (42) that communicates with the toll settlement on-board unit in a frequency band different from the frequency band in which the roadside device and the toll settlement on-board unit communicate with each other.
Based on the fact that the second mobile communication unit receives a request signal from the on-board unit for charge settlement, requesting an interference avoidance measure for suppressing interference with the radio waves communicated between the roadside unit and the on-board unit for charge settlement, the first It includes a terminal communication control unit (46, 246) that executes interference avoidance measures for the mobile communication unit.

This mobile communication terminal executes interference avoidance measures based on the reception of the request signal. Therefore, the mobile communication terminal is less likely to interfere with the communication between the roadside device for toll settlement and the in-vehicle device for toll settlement.

Another disclosure relating to mobile communication terminals to achieve the above objectives is
In a mobile communication terminal (240) provided with a first mobile communication unit (41) in which harmonics are a frequency band used for communication between a roadside device (20) for toll settlement and an in-vehicle device (230) for toll settlement. There,
An interference area determination unit (249, 349) that determines whether the current position is located in an interference area that includes a tollhouse area where the roadside device and the on-board unit for toll settlement communicate with each other.
Based on the fact that the interference area determination unit determines that the current position is located in the interference area, the first mobile communication is an interference avoidance measure that suppresses interference with the radio waves communicated between the roadside device and the on-board unit for toll settlement. It includes a terminal communication control unit (246) that executes the unit.

In this mobile communication terminal, when the interference area determination unit determines that the current position is located in the interference area, the terminal communication control unit executes the interference avoidance measure. Since the interference area is an area including the tollhouse area, the on-board unit for toll settlement and the roadside device are used by the mobile communication terminal while the on-board unit for toll settlement is executing the payment process with the roadside device. Communication is suppressed from being interfered with.

One disclosure relating to a fee payment system to achieve the above objectives is
It is a charge settlement system equipped with the above-mentioned mobile communication terminal and an in-vehicle device for charge settlement.
Mobile communication terminals
It is equipped with a second mobile communication unit (42) that communicates with the toll settlement on-board unit in a frequency band different from the frequency band in which the roadside device and the toll settlement on-board unit communicate.
After the first mobile communication unit starts the interference avoidance measure, the second mobile communication unit transmits a measure start signal indicating that the first mobile communication unit has started the interference avoidance measure to the on-board unit for charge settlement.
On-board equipment for charge settlement
A terminal communication unit (32) that communicates with a mobile communication terminal in a frequency band different from the frequency band that communicates with the roadside device.
It is equipped with a roadside device communication unit (31) that communicates with the roadside device.
When the terminal communication unit receives the measure start signal, the roadside device communication unit starts intermittent activation to intermittently check whether or not the radio wave transmitted by the roadside device can be received.

According to this toll settlement system, it is possible to prevent the on-board unit for toll settlement from being unnecessarily activated intermittently when the roadside device is not nearby.

One disclosure relating to a terminal control program for achieving the above objectives is
A control unit provided in a mobile communication terminal (240) provided with a first mobile communication unit (41) whose harmonics are a frequency band used for communication between a roadside device for charge settlement and an in-vehicle device (230) for charge settlement. (244,344) is a terminal control program executed by the control unit.
An interference area determination unit (249, 349) that determines whether the current position is located in an interference area that includes a tollhouse area where the roadside device and the on-board unit for toll settlement communicate with each other.
Based on the fact that the interference area determination unit determines that the current position is located in the interference area, the first mobile communication is an interference avoidance measure that suppresses interference with the radio waves communicated between the roadside device and the on-board unit for charge settlement. It is a terminal control program that operates as a terminal communication control unit (246) that is executed for the unit.

Configuration diagram of the charge settlement system 10 of the first embodiment The figure which shows the structure of the vehicle-mounted device 30 of 1st Embodiment The figure which shows the structure of the smartphone 40 of 1st Embodiment The figure which shows the processing of an in-vehicle device 30 and a smartphone 40 related to charge settlement. The figure which shows the structure of the vehicle-mounted device 230 of 2nd Embodiment The figure which shows the structure of the smartphone 240 of 2nd Embodiment The figure which shows the processing of the in-vehicle device 230 and the smartphone 240 related to the charge settlement. The figure which shows the structure of the smartphone 340 of 3rd Embodiment The figure which shows the processing of the smartphone 340 related to the charge settlement

<First Embodiment>
〔overall structure〕
Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a configuration diagram of the charge settlement system 10 of the first embodiment. The toll payment system 10 includes a roadside device 20, a toll settlement on-board unit (hereinafter, simply on-board unit) 30, a smartphone 40, a base station 50, and a payment server 60.

The roadside device 20 is installed at a tollhouse on a toll road, and transmits and receives a signal for toll settlement to and from the on-board unit 30 by wireless communication. Further, the roadside device 20 is connected to the payment server 60 via a network line 70 so as to be able to communicate with each other. A short-range wireless communication method is used for communication between the roadside device 20 and the vehicle-mounted device 30. This is because it suffices if the roadside unit 20 and the on-board unit 30 can communicate in a limited area around the tollhouse. The communication area of the roadside device 20 can be set to several tens of meters in the front-rear direction along the road, for example, based on the installation position of the roadside device 20. More specifically, the communication area of the roadside device 20 is wider on the side toward the tollhouse (that is, on the front side of the tollhouse) than on the side away from the tollhouse in the direction along the road. This is because it is necessary to carry out the payment process in front of the tollhouse and open the gate if the tollhouse has a gate.

There is no limit to the frequency band of the radio waves transmitted and received by the roadside device 20. As an example of the short-range wireless communication system, there is a DSRC (Dedicated Short Range Communications) system. The frequency used in the DSRC method is known to be 5.7-5.8 GHz.

The vehicle-mounted device 30 is mounted on the vehicle C. The vehicle C is not particularly limited as long as it is a vehicle traveling on the road. Vehicles include 2-8 passenger cars, buses, trucks and motorcycles. The on-board unit 30 communicates with the roadside unit 20 by a short-range wireless communication method. The on-board unit 30 also communicates with the smartphone 40. The specific configuration of the vehicle-mounted device 30 will be described later with reference to FIG.

The smartphone 40 is a mobile communication terminal and wirelessly communicates with the vehicle-mounted device 30 and the base station 50. The base station 50 is a part of a public wireless communication network, and wirelessly communicates with the smartphone 40 when the smartphone 40 performs data communication and voice communication. The payment server 60 communicates with the roadside device 20 via the network line 70. The payment server 60 charges the toll of the toll road to the toll target person specified based on the information from the roadside device 20.

[Configuration of on-board unit 30]
FIG. 2 shows the configuration of the on-board unit 30. The on-board unit 30 includes a roadside device communication unit 31, a terminal communication unit 32, and a control unit 33. The roadside device communication unit 31 is a wireless unit for communicating with the roadside device 20, and communicates by the short-range wireless communication method described above.

The terminal communication unit 32 is a communication unit for communicating with the smartphone 40. For communication with the smartphone 40, a short-range wireless communication method different from the communication method used by the roadside device communication unit 31 is used. In this embodiment, the terminal communication unit 32 uses the BLE communication method. BLE is an abbreviation for Bluetooth Low Energy, and Bluetooth is a registered trademark. However, as the communication method used by the terminal communication unit 32, a short-range communication method other than BLE, for example, other short-range wireless communication methods such as Bluetooth and Wi-Fi (registered trademark) may be used. In BLE communication, a frequency in the 2.4 GHz band is used. Further, when communicating with the smartphone 40 by Wi-Fi, the 5 GHz band can be used in addition to the 2.4 GHz band. However, in the 5 GHz band, there is a concern about adjacent interference with the frequency band used for communication between the on-board unit 30 and the roadside unit 20. Therefore, when the vehicle-mounted device 30 and the roadside device 20 communicate with each other, the frequency of Wi-Fi used for communicating with the smartphone 40 is set to the 2.4 GHz band.

The control unit 33 can be realized by a configuration including at least one processor. For example, the control unit 33 can be realized by a computer including a processor, a non-volatile memory, a RAM, an I / O, and a bus line connecting these configurations. The non-volatile memory stores a program for operating a general-purpose computer as a control unit 33. When the processor executes the program stored in the non-volatile memory while using the temporary storage function of the RAM, the control unit 33 ends the communication control unit 34, the tollhouse area determination unit 35, and the payment processing unit 36. It operates as a determination unit 37. Execution of these operations means that the method corresponding to the program is executed.

The communication control unit 34 controls the roadside device communication unit 31 and the terminal communication unit 32 to communicate with the roadside device 20 and the smartphone 40. Specific processing executed by the communication control unit 34 will be described later with reference to FIG.

The tollhouse area determination unit 35 determines whether or not the on-board unit 30 has entered the tollhouse area. The tollhouse area is an area that can communicate with the roadside device 20 installed at the tollhouse. Therefore, in the present embodiment, the tollhouse area determination unit 35 determines that the roadside device communication unit 31 has entered the tollhouse area when it receives a radio wave from the roadside device 20.

The payment processing unit 36 performs payment processing, which is a process of transmitting and receiving information necessary for charge settlement. In the payment process, information necessary for toll settlement is transmitted and received by communication between the roadside device communication unit 31 and the roadside device 20.

The end determination unit 37 determines whether or not the communication between the roadside device 20 and the roadside device communication unit 31 has been completed. In the present embodiment, when the payment processing unit 36 completes the payment processing, it is determined that the communication between the roadside device 20 and the roadside device communication unit 31 has ended. The end of the settlement process includes not only the case where the settlement process is successful, that is, the case where the settlement process is normally completed, but also the case where the settlement process is completed without success.

[Configuration of smartphone 40]
FIG. 3 shows the configuration of the smartphone 40. The smartphone 40 includes a wide area communication unit 41, a BLE communication unit 42, a memory 43, and a control unit 44. Of course, the smartphone 40 also includes a display, a speaker, a touch panel, and the like, but the illustration is omitted because it is unnecessary for the description of the present embodiment. The wide area communication unit 41 is the first mobile communication unit, and the BLE communication unit 42 is the second mobile communication unit.

The wide area communication unit 41 communicates with various communication destination devices by wireless communication via the base station 50. The wide area communication unit 41 can communicate with a plurality of channels having different frequencies from each other. It is assumed that one communication channel is 1.94 GHz. In addition, frequency bands defined by the country or region, such as 900 MHz and 2.5 GHz bands, are used. The communication method used by the wide area communication unit 41 is a communication method used by a mobile communication system called 4G, 5G, or the like.

The BLE communication unit 42 is a communication unit capable of BLE communication, and wirelessly communicates with the terminal communication unit 32 included in the vehicle-mounted device 30. The BLE communication unit 42 and the terminal communication unit 32 recognize that they can communicate with each other when they have been paired in advance and the communication partner is located in the communication range. The memory 43 is a writable memory such as a flash memory.

The control unit 44 can be realized by a computer including a processor, a non-volatile memory, RAM, I / O, and a bus line connecting these configurations. The non-volatile memory stores a terminal control program for operating a general-purpose computer as a control unit 44. When the processor executes the terminal control program stored in the non-volatile memory while using the temporary storage function of the RAM, the control unit 44 operates as the terminal communication control unit 46. When this operation is executed, it means that the method corresponding to the terminal control program is executed.

The terminal communication control unit 46 controls the wide area communication unit 41 and the BLE communication unit 42. The control executed by the terminal communication control unit 46 on the wide area communication unit 41 includes interference avoidance measures. The interference avoidance measure is a measure for preventing the radio waves transmitted and received by the wide area communication unit 41 from interfering with the radio waves transmitted and received by the vehicle-mounted device 30 and the roadside device 20 in the same vehicle C.

Interference avoidance measures include measures to reduce the transmission power to a preset level at which interference does not occur, measures to stop transmission / reception, and measures to change the communication channel. The specific interference avoidance measures to be implemented are determined in advance.

The reason for implementing the interference avoidance measure is that the triple harmonic of 1.94 GHz, which is one of the frequencies of the radio waves transmitted and received by the wide area communication unit 41, is the frequency of the radio waves transmitted and received by the roadside device communication unit 31 and the roadside device 20. This is because it becomes a band.

In the present embodiment, the terminal communication control unit 46 executes the interference avoidance measure when the BLE communication unit 42 receives a request signal requesting the interference avoidance measure from the vehicle-mounted device 30.

[Processing related to charge settlement]
Next, the processing of the control unit 33 of the vehicle-mounted device 30 and the control unit 44 of the smartphone 40 related to the charge settlement will be described with reference to FIG. In the first embodiment, the control unit 33 of the vehicle-mounted device 30 periodically executes the process shown in FIG. 4 while the power of the vehicle-mounted device 30 is on. In S1, the communication control unit 34 executes the wake-up intermittent reception mode. This mode is a mode for intermittently activating the roadside device communication unit 31. At startup, S2 is executed.

S2 is executed by the tollhouse area determination unit 35. In S2, it is determined whether or not the signal transmitted by the roadside device 20 can be received by the roadside device communication unit 31. If the signal transmitted by the roadside device 20 cannot be received within a certain period of time after the startup, the determination result of S2 is set to NO and the process returns to S1 to temporarily enter the sleep state. If the determination result of S2 is YES, the process proceeds to S3.

In S3, the communication control unit 34 transmits the above-mentioned request signal from the terminal communication unit 32 to the BLE communication unit 42 of the smartphone 40 that has been paired in advance.

When S3 is executed, the BLE communication unit 42 of the smartphone 40 receives the request signal in S11. In the following S12, the terminal communication control unit 46 causes the wide area communication unit 41 to start the interference avoidance measure determined in advance.

In S13, the terminal communication control unit 46 transmits a measure start notification indicating that the interference avoidance measure has been started from the BLE communication unit 42 to the terminal communication unit 32 of the vehicle-mounted device 30.

The terminal communication unit 32 of the vehicle-mounted device 30 receives this measure start notification in S4. In the following S5, the payment processing unit 36 starts the payment processing in cooperation with the communication control unit 34. In S6, the end determination unit 37 determines whether or not the settlement process has been completed. Whether or not the payment processing is completed is determined by whether or not the operation of the payment processing unit 36 is completed. If the determination result of S6 is NO, the process returns to S5, and the settlement processing unit 36 continues the settlement processing. If the determination result of S6 is YES, the process proceeds to S7.

In S7, the communication control unit 34 causes the terminal communication unit 32 to transmit an end signal indicating that the interference avoidance measure may be terminated.

The BLE communication unit 42 of the smartphone 40 receives the end signal in S14. In the following S15, the terminal communication control unit 46 ends the interference avoidance measure executed for the wide area communication unit 41.

[Summary of the first embodiment]
In the first embodiment described above, the vehicle-mounted device 30 includes a terminal communication unit 32 that communicates with the smartphone 40 in a frequency band different from the frequency band that communicates with the roadside device 20. Since the vehicle-mounted device 30 includes the communication unit 32 for the terminal, the communication control unit 34 can transmit the request signal to the smartphone 40 when it is determined that the user has entered the toll payment area (S2: YES) (S3). .. When the smartphone 40 receives this request signal, it starts interference avoidance measures (S12). Therefore, even if the frequency of the triple harmonic of the radio wave transmitted and received by the wide area communication unit 41 of the smartphone 40 is substantially the same as the frequency of the radio wave transmitted and received by the roadside device communication unit 31 and the roadside device 20, the on-board unit 30 , It becomes difficult to receive interference from the smartphone 40 brought into the vehicle C.

Further, in the present embodiment, the vehicle-mounted device 30 transmits an end signal to the smartphone 40 when it is determined that the payment process is completed (S7), and when the smartphone 40 receives the end signal (S14), the interference avoidance measure is terminated. (S15). With this configuration, the smartphone 40 can quickly end the interference avoidance measure when the interference avoidance measure becomes unnecessary.

Further, in the present embodiment, the vehicle-mounted device 30 transmits a request signal to the smartphone 40 when the roadside device communication unit 31 receives the radio wave from the roadside device 20 (S2, S3). With this configuration, the request signal can be transmitted too quickly, and the period during which the smartphone 40 executes the interference avoidance measure can be shortened even though the interference avoidance measure is not required.

<Second Embodiment>
Next, the second embodiment will be described. In the following description of the second embodiment, the elements having the same number as the codes used so far are the same as the elements having the same code in the previous embodiments, unless otherwise specified. Further, when only a part of the configuration is described, the embodiment described above can be applied to the other parts of the configuration.

FIG. 5 shows a configuration diagram of a charge settlement in-vehicle device (hereinafter, in-vehicle device) 230 included in the charge settlement system of the second embodiment. The vehicle-mounted device 230 includes the same roadside device communication unit 31 and terminal communication unit 32 as the vehicle-mounted device 30 of the first embodiment. Further, the control unit 233 is provided in place of the control unit 33.

The hardware configuration of the control unit 233 is the same as that of the control unit 33. The control unit 233 includes the same tollhouse area determination unit 35, payment processing unit 36, and end determination unit 37 that the control unit 33 has. Further, a communication control unit 234 is provided instead of the communication control unit 34.

The communication control unit 234 is the same as the communication control unit 34 in that it controls the roadside device communication unit 31 and the terminal communication unit 32. The process executed by the communication control unit 234 will be described later with reference to FIG.

FIG. 6 shows a configuration diagram of a smartphone 240 included in the charge settlement system of the second embodiment. The smartphone 240 is also a mobile communication terminal. The smartphone 240 includes the same wide area communication unit 41, BLE communication unit 42, and memory 43 as those included in the smartphone 40. However, a map storage area 43a is set in the memory 43. The interference area map downloaded from the outside is stored in the map storage area 43a. The interference area map is a map showing the interference area on the map. The interference area is an area including the tollhouse area. The interference area in the second embodiment is the same as the tollhouse area.

The smartphone 240 also includes a control unit 244 instead of the control unit 44, and also includes a GNSS receiver 245. The GNSS receiver 245 receives a navigation signal transmitted by a navigation satellite included in the GNSS (Global Navigation Satellite System). Then, the GNSS receiver 245 sequentially calculates the current position based on the navigation signal.

The control unit 244 operates as a terminal communication control unit 246, a position acquisition unit 247, a map acquisition unit 248, and an interference area determination unit 249. The terminal communication control unit 246 controls the wide area communication unit 41 and the BLE communication unit 42. The control executed by the terminal communication control unit 246 on the wide area communication unit 41 includes interference avoidance measures.

The position acquisition unit 247 sequentially acquires the current position detected by the GNSS receiver 245. The map acquisition unit 248 downloads an interference area map of a range determined based on the current position, including the current position, from the outside via the terminal communication control unit 246 and the BLE communication unit 42 or the wide area communication unit 41. Then, the downloaded interference area map is stored in the map storage area 43a.

The interference area determination unit 249 compares the current position acquired by the position acquisition unit 247 with the interference area map stored in the map storage area 43a, and determines whether or not the current position is located in the interference area. ..

[Processing related to charge settlement]
Next, the processing of the control unit 233 of the vehicle-mounted device 230 and the control unit 244 of the smartphone 240 related to the charge settlement will be described with reference to FIG. 7. The control unit 233 of the vehicle-mounted device 230 periodically executes the process shown in FIG. 7 while the power of the vehicle-mounted device 230 is on. Further, the control unit 244 of the smartphone 240 performs the process shown in FIG. 7 when a predetermined execution condition is satisfied, such as when the BLE communication unit 42 is paired with the terminal communication unit 32 of the on-board unit 230. Run.

In S21, the position acquisition unit 247 acquires the current position from the GNSS receiver 245. In S22, the interference area determination unit 249 compares the interference area map stored in the map storage area 43a with the current position acquired in S21, and determines whether or not the current position has entered the interference area. If the determination result of S22 is NO, the process returns to S21. If the determination result in S22 is YES, the process proceeds to S23.

In S23, the terminal communication control unit 246 causes the wide area communication unit 41 to start the interference avoidance measure determined in advance. In S24, the terminal communication control unit 246 transmits a measure start signal indicating that the interference avoidance measure has been started from the BLE communication unit 42 to the terminal communication unit 32 of the vehicle-mounted device 230.

The terminal communication unit 32 of the vehicle-mounted device 230 receives this measure start signal at S31. In the following S32, the communication control unit 234 executes the wake-up intermittent reception mode. This mode is a mode in which the roadside device communication unit 31 is periodically activated. At startup, S33 is executed.

S33 is executed by the tollhouse area determination unit 35. In S33, the roadside device communication unit 31 determines whether or not the signal transmitted by the roadside device 20 can be received. If the signal transmitted by the roadside device 20 cannot be received within a certain period of time after the start-up, the determination result of S33 is set to NO and the process returns to S32, and the sleep state is temporarily entered. However, in the second embodiment, it is determined that the smartphone 240 has entered the interference area, and the interference area is the same area as the tollhouse area. Therefore, the judgment result of S33 is rarely NO. That is, the number of times S32 and S33 are repeated is not large, and the determination result of S33 becomes YES at the time of the first execution of S33 or within a short time thereafter. If the determination result in S33 is YES, the process proceeds to S34.

In S34, the payment processing unit 36 starts the payment processing in cooperation with the communication control unit 234. In S35, the end determination unit 37 determines whether or not the settlement process has been completed. If the determination result of S35 is NO, the process returns to S34, and the settlement processing unit 36 continues the settlement processing. If the determination result in S35 is YES, the process proceeds to S36. In S36, the communication control unit 234 causes the terminal communication unit 32 to transmit the end signal.

The BLE communication unit 42 of the smartphone 240 receives the end signal in S25. In the following S26, the terminal communication control unit 246 ends the interference avoidance measure executed for the wide area communication unit 41.

[Summary of the second embodiment]
In this second embodiment, when the smartphone 240 determines that the current position has entered the interference area, the smartphone 240 starts the interference avoidance measure (S23). Since the interference area is an area including the tollhouse area, the smartphone 240 communicates between the on-board unit 230 and the roadside unit 20 while the on-board unit 230 is executing the payment process with the roadside unit 20. Interference is suppressed.

Further, in the second embodiment, the smartphone 240 includes the BLE communication unit 42, and transmits a measure start signal indicating that the interference avoidance measure has been started to the vehicle-mounted device 230 (S24). Upon receiving this measure start signal, the vehicle-mounted device 230 starts the wake-up intermittent mode (S32). Therefore, it is possible to prevent the on-board unit 230 from starting when the roadside unit 20 is not nearby.

Further, in the second embodiment, the on-board unit 230 transmits an end signal to the smartphone 40 when it is determined that the payment process is completed (S36), and when the smartphone 240 receives the end signal (S25), the interference avoidance measure is taken. It ends (S26). With this configuration, the smartphone 240 can quickly end the interference avoidance measure when the interference avoidance measure becomes unnecessary.

<Third Embodiment>
Next, the third embodiment will be described. The charge settlement system of the third embodiment includes the smartphone 340 shown in FIG. 8 in place of the smartphone 240 of the second embodiment. The charge settlement system of the third embodiment includes the same vehicle-mounted device 230 as that of the second embodiment.

The control unit 344 of the smartphone 340 includes a base station list acquisition unit 348 in place of the map acquisition unit 248 provided by the control unit 244 of the smartphone 240. Further, the memory 43 is provided with a list storage area 43b instead of the map storage area 43a.

The base station list acquisition unit 348 acquires the base station list from the outside via the wide area communication unit 41 or the BLE communication unit 42 and the terminal communication control unit 246. The base station list is a list showing whether or not the communication area of the base station 50 includes a tollhouse area for each base station. In the base station list, each base station 50 is distinguished from other base stations 50 by the base station ID. The base station list acquisition unit 348 stores the acquired base station list in the list storage area 43b.

The interference area determination unit 349 identifies the base station ID of the base station 50 communicating with the wide area communication unit 41. Then, based on the specified base station 50 and the base station list stored in the list storage area 43b, it is determined whether or not the current position is located in the interference area. If the base station ID acquired from the base station 50 currently being communicated by the wide area communication unit 41 is included in the base station list, it is determined that the current position is located in the interference area.

FIG. 9 shows a part of the process to be executed instead of FIG. 7 in the third embodiment. In the third embodiment, S41 and S42 are executed instead of S21 and S22 in FIG. Others are the same as in FIG.

In S41, the terminal communication control unit 246 acquires the base station ID of the base station 50 with which the wide area communication unit 41 is communicating from the wide area communication unit 41. In S42, the interference area determination unit 349 determines whether or not the current position has entered the interference area based on the base station ID acquired in S41 and the base station list stored in the list storage area 43b. If the base station ID acquired in S41 is the base station ID in the base station list, it is determined that the current position has entered the interference area.

If the determination result of S42 is NO, the process returns to S41. If the determination result in S42 is YES, the process proceeds to S23. The procedure after S23 is the same as that in FIG.

In the third embodiment, whether or not the base station ID acquired from the base station 50 by the wide area communication unit 41 has entered the interference area is determined by whether or not the base station ID is in the base station list acquired in advance. to decide. Therefore, the calculation load for determining whether or not the user has entered the interference area is reduced.

Although the embodiments have been described above, the disclosed technology is not limited to the above-described embodiments, and the following modifications are also included in the disclosed scope, and further, within a range other than the following that does not deviate from the gist. It can be implemented with various changes.

<Modification example 1>
In the embodiment, when it is determined that the settlement process is completed, it is determined that the communication with the roadside device 20 is completed. However, when the roadside device communication unit 31 can no longer receive the radio wave from the state where the radio wave from the roadside device 20 can be received, it may be determined that the communication with the roadside device 20 has ended. ..

<Modification 2>
In the second embodiment, the vehicle-mounted device 30 transmits the end signal to the smartphone 40 (S36), and the smartphone 40 ends the interference avoidance measure when the end signal is received (S26). However, as described in the second embodiment, it can be determined whether or not the smartphone 40 is located in the tollhouse area. Therefore, the smartphone 40 may terminate the interference avoidance measure by determining that the current position has left the tollhouse area in the situation where the interference avoidance measure is being executed.

<Modification example 3>
Further, in the third embodiment, the smartphone 340 determines that the current position has entered the interference area and starts the interference avoidance measure. As a modification of this third embodiment, when the base station 50 communicating with the wide area communication unit 41 becomes the base station 50 which is not in the base station list, the terminal communication control unit 246 is in the interference area at the current position. You may decide that it is gone and end the interference avoidance measures.

<Modification example 4>
In the previous embodiments and modifications, the charges have been settled via the smartphones 40, 240, and 340. However, the vehicle-mounted devices 30 and 230 may transmit the information regarding the charge settlement to the roadside device 20 without using the smartphones 40, 240 and 340.

<Modification 5>
The time that vehicle C exists in the tollhouse area is not so long. Therefore, when it is determined that the tollhouse area has been entered and the interference avoidance measures are started, the interference avoidance measures may be terminated after a certain period of time has passed.

<Modification 6>
If the vehicle C is equipped with an in-vehicle camera, it may be determined that the vehicle has entered the tollhouse area by analyzing the image of the in-vehicle camera and detecting the sign at the tollhouse gate.

<Modification 7>
In the case of the vehicle C provided with the navigation device, the navigation device may determine whether or not the current position has entered the tollhouse area in the same manner as the smartphone 240 of the second embodiment.

<Modification 8>
In the second embodiment, the smartphone 240 includes a map storage area 43a that stores an interference area map in the memory 43. However, the interference area map may be provided by a predetermined server (hereinafter, interference area server). In this case, the smartphone 240 transmits the current position to the interference area server. The interference area server sequentially determines whether or not the smartphone 240 has entered the interference area based on the current position, and transmits the determination result to the smartphone 240.

<Modification example 9>
The control unit and its method described in the present disclosure may be realized by a dedicated computer constituting a processor programmed to perform one or more functions embodied by a computer program. Alternatively, the control unit and its method described in the present disclosure may be realized by a dedicated hardware logic circuit. Alternatively, the control unit and its method described in the present disclosure may be realized by one or more dedicated computers configured by a combination of a processor that executes a computer program and one or more hardware logic circuits. Hardware logic circuits are, for example, ASICs and FPGAs.

Further, the storage medium for storing the computer program is not limited to the ROM, and may be stored in a computer-readable non-transition tangible recording medium as an instruction executed by the computer. For example, the above program may be stored in the flash memory.

10: Toll settlement system 20: Roadside device 30: In-vehicle device 31: Roadside device communication unit 32: Terminal communication unit 33: Control unit 34: Communication control unit 35: Toll office area judgment unit 36: Payment processing unit 37: Termination judgment Unit 40: Smartphone (mobile communication terminal) 41: Wide area communication unit (first mobile communication unit) 42: BLE communication unit (second mobile communication unit) 43: Memory 43a: Map storage area 43b: List storage area 44: Control unit 46: Terminal communication control unit 50: Base station 60: Payment server 70: Network line 230: In-vehicle device 233: Control unit 234: Communication control unit 240: Smartphone (mobile communication terminal) 244: Control unit 245: GNSS receiver 246: Terminal communication control unit 247: Position acquisition unit 248: Map acquisition unit 249: Interference area determination unit 340: Smartphone (mobile communication terminal) 344: Control unit 348: Base station list acquisition unit 349: Interference area determination unit

Claims (15)

An on-board unit for toll settlement equipped with a roadside device communication unit (31) mounted on a vehicle (C) and communicating with a roadside device (20) for toll settlement installed on the roadside when the vehicle passes through a toll road. (30)
A terminal communication unit (32) that communicates with a mobile communication terminal in a frequency band different from the frequency band that communicates with the roadside device.
It is equipped with a tollhouse area determination unit (35) that determines that the vehicle has entered the tollhouse area that communicates with the roadside device.
The terminal communication unit is an on-board unit for charge settlement that transmits a request signal requesting interference avoidance measures to the mobile communication terminal based on the determination that the tollhouse area determination unit has entered the tollhouse area. The on-board unit for charge settlement according to claim 1.
The tollhouse area determination unit is an on-board unit for toll settlement that determines that the roadside device communication unit has entered the tollhouse area based on the reception of radio waves from the roadside device. The on-board unit for charge settlement according to claim 1 or 2.
A termination determination unit (37) for determining whether or not communication with the roadside device has been terminated is provided.
When the end determination unit determines that the communication with the roadside unit has ended, the terminal communication unit transmits an end signal indicating that the interference avoidance measure may be terminated to the mobile communication terminal. In-vehicle device for payment. The on-board unit for charge settlement according to claim 3.
A payment processing unit (36) that performs payment processing, which is a process of transmitting and receiving information necessary for toll settlement by communicating with the roadside device using the roadside device communication unit, is provided.
The end determination unit is an on-board unit for charge settlement that determines that communication with the roadside unit has ended when the payment process ends normally or when the payment process ends without success. The on-board unit for charge settlement according to claim 3.
The end determination unit is an on-board unit for charge settlement that determines that communication with the roadside device has ended based on the fact that the roadside device communication unit can no longer receive radio waves from the roadside device. A mobile communication terminal (40) having a first mobile communication unit (41) whose harmonics are a frequency band used for communication between a roadside device for toll settlement and an in-vehicle device for toll settlement.
A second mobile communication unit (42) that communicates with the charge settlement vehicle-mounted device in a frequency band different from the frequency band in which the roadside device and the charge settlement vehicle-mounted device communicate with each other.
Based on the fact that the second mobile communication unit receives a request signal from the toll settlement on-board unit requesting an interference avoidance measure for suppressing interference with radio waves communicated between the roadside device and the toll settlement on-board unit. A mobile communication terminal including a terminal communication control unit (46, 246) that executes the interference avoidance measure with respect to the first mobile communication unit. The mobile communication terminal according to claim 6.
The first mobile communication unit is a mobile communication terminal that ends the interference avoidance measure when the second mobile communication unit receives an end signal indicating that the interference avoidance measure may be terminated. In a mobile communication terminal (240) provided with a first mobile communication unit (41) in which harmonics are a frequency band used for communication between a roadside device (20) for toll settlement and an in-vehicle device (230) for toll settlement. There,
An interference area determination unit (249, 349) for determining whether the current position is located in an interference area including a tollhouse area where the roadside device and the on-board unit for charge settlement communicate with each other.
Based on the determination that the current position is located in the interference area, the interference area determination unit takes an interference avoidance measure for suppressing interference with radio waves communicated between the roadside device and the toll settlement vehicle-mounted device. A mobile communication terminal including a terminal communication control unit (246) that executes the first mobile communication unit. The mobile communication terminal according to claim 8.
The interference area determination unit (249) acquires an interference area map showing the interference area on the map, compares the interference area map with the current position, and the current position is located in the interference area. A mobile communication terminal that determines whether or not it is present. The mobile communication terminal according to claim 8.
The first mobile communication unit communicates with the base station (50) and communicates with the base station (50).
A base station list acquisition unit (348) for acquiring a base station list indicating whether or not the communication area of the base station includes the tollhouse area for each base station is provided.
The interference area determination unit (349) identifies the base station communicating with the first mobile communication unit, and the current position is the interference area based on the specified base station and the base station list. A mobile communication terminal that determines whether or not it is located in. The mobile communication terminal according to any one of claims 8 to 10.
The terminal communication control unit is a mobile communication terminal that terminates the interference avoidance measure based on the fact that the current position has left the tollhouse area in the situation where the interference avoidance measure is being executed. The mobile communication terminal according to claim 10.
The terminal communication control unit is a mobile communication terminal that terminates the interference avoidance measure based on the fact that the base station communicating with the first mobile communication unit has become a base station that is not on the base station list. A toll settlement system including the mobile communication terminal according to any one of claims 8 to 12 and the in-vehicle device for toll settlement.
The mobile communication terminal is
A second mobile communication unit (42) that communicates with the toll settlement on-board unit in a frequency band different from the frequency band in which the roadside device and the toll settlement on-board unit communicate is provided.
The second mobile communication unit sends a measure start signal indicating that the first mobile communication unit has started the interference avoidance measure after the first mobile communication unit has started the interference avoidance measure. Send to the vessel,
The in-vehicle device for charge settlement is
A terminal communication unit (32) that communicates with the mobile communication terminal in a frequency band different from the frequency band that communicates with the roadside device.
A roadside device communication unit (31) that communicates with the roadside device is provided.
The roadside device communication unit starts an intermittent activation for intermittently confirming whether or not the radio wave transmitted by the roadside device can be received when the terminal communication unit receives the measure start signal. .. The fee settlement system according to claim 13.
When the communication between the roadside device communication unit and the roadside device is completed, the terminal communication unit included in the toll settlement vehicle-mounted device transmits an end signal indicating that the interference avoidance measure may be terminated.
The first mobile communication unit included in the mobile communication terminal is a charge settlement system that terminates the interference avoidance measure when the second mobile communication unit receives the end signal. A control unit provided in a mobile communication terminal (240) provided with a first mobile communication unit (41) whose harmonics are a frequency band used for communication between a roadside device for charge settlement and an in-vehicle device (230) for charge settlement. (244,344) is a terminal control program executed by the control unit.
An interference area determination unit (249, 349) for determining whether the current position is located in an interference area including a tollhouse area where the roadside device and the on-board unit for charge settlement communicate with each other.
Based on the determination that the current position is located in the interference area, the interference area determination unit takes an interference avoidance measure for suppressing interference with radio waves communicated between the roadside device and the toll settlement vehicle-mounted device. A terminal communication control unit (246) executed for the first mobile communication unit, and
A terminal control program that operates as.

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