JP6244215B2 - In-vehicle communication system - Google Patents

Description

  The present invention relates to an in-vehicle communication system that uses a mobile terminal as a vehicle key.

  Patent Document 1 discloses an in-vehicle device that performs wireless communication between a smartphone and a vehicle possessed by a user, and permits switching between locking and unlocking doors on the condition that collation performed by the wireless communication is established. A communication system is disclosed. Some in-vehicle communication systems switch between locking and unlocking the door by detecting contact with the door handle while switching between locking and unlocking the door is permitted. Wireless communication of the in-vehicle communication system is performed using BLUETOOTH (registered trademark) which is one of short-range wireless communication standards.

JP 2013-106338 A

  Generally, in BLUETOOTH, a state called a link in which a wireless connection is established by an electronic device in a search state discovering an electronic device in a search state and exchanging a passkey between the two electronic devices It becomes. Wireless communication is always performed between two electronic devices in which a link is established. Also in the in-vehicle communication system of Patent Literature 1, wireless communication is always performed between a smartphone and a vehicle in a state where a link is established.

  By the way, from the viewpoint of ensuring security, in many in-vehicle communication systems, verification between a smartphone and a vehicle is performed by verification of a verification key via a common authentication key different from a passkey.

  In BLUETOOTH, it is well known that it takes time to establish a link. For this reason, for example, when the user locks and unlocks the door of the vehicle, a link between the vehicle and the smartphone is established by using detection of contact with the door handle as a trigger, and then the verification between the vehicle and the smartphone is established. In a system that determines whether or not to do so, it takes time from when the user touches the door handle to when the door is locked and unlocked. Moreover, in BLUETOOTH Low Energy, since the frame length is short, data transmission / reception may be required a plurality of times for authentication. In this case, more time is required until the door is unlocked. For this reason, the user may feel annoying.

  In the above-described in-vehicle communication system, a smartphone is used as a mobile terminal, but the same problem may occur even if the mobile terminal is a tablet terminal, a portable music terminal, a notebook computer, or the like that does not have a telephone function. May occur.

  The present invention has been made in view of such circumstances, and an object thereof is to provide an in-vehicle communication system that has good responsiveness to user operations even when wireless communication is performed with a vehicle using BLUETOOTH. There is.

  In order to solve the above-mentioned problem, an in-vehicle communication system is a terminal that performs wireless communication between a terminal-side storage unit that stores an authentication key, a verification key, and a passkey, and another device that has a link established through the exchange of the passkey Mobile terminal having a side BLUETOOTH communication unit, a terminal function unit that exhibits a function different from this communication function, and a battery that supplies driving power to each unit of the terminal, the authentication key, the verification key, and the Operated by the user, an in-vehicle storage unit that stores a passkey, a vehicle-side BLUETOOTH communication unit that wirelessly communicates with other devices that attempt to periodically exchange the passkey and establish a link through the exchange of the passkey The collation of the collation key performed through wireless communication between the operation unit and the portable terminal with the link established is established, and the operation unit is operated. A vehicle-mounted control unit that executes control of the vehicle-mounted device on condition that the vehicle-mounted control unit establishes the link with the portable terminal and then passes the authentication key The gist is that the verification of the verification key is performed, and after the verification is established, the control of the in-vehicle device is executed using an operation to the operation unit as a trigger.

  According to this system, when the operation unit is operated, the link between the in-vehicle unit and the portable terminal has already been established, and the collation key is collated. For this reason, in-vehicle devices are controlled after the operation unit is operated, compared to a system in which a verification key is collated after attempting to establish a link with the mobile terminal using an operation to the operation unit as a trigger. It takes a short time to complete. For this reason, the responsiveness to a user operation is good.

  In the above system, the in-vehicle device has different functions to be executed according to the position of the mobile terminal with respect to the vehicle, and the in-vehicle control unit is connected to the mobile terminal while the link is established. It is preferable to determine the position of the portable terminal with respect to the vehicle through a wireless signal transmitted and received in the above.

  According to this system, since the position of the mobile terminal relative to the vehicle is determined before the operation unit is operated, the responsiveness to the operation is compared with a system that performs position determination after the operation unit is operated. Is good.

  In the system, the mobile terminal has a notification unit appealing to a user's sense, and the in-vehicle device transmits a radio signal instructing the mobile terminal to notify that after executing the control of the in-vehicle device. It is preferable to do.

  According to this system, the user can recognize which in-vehicle device has been controlled through the mobile terminal.

  The in-vehicle communication system of the present invention has an effect that the responsiveness to a user operation is good even when wireless communication is performed with a vehicle using BLUETOOTH.

The block diagram which shows schematic structure of a vehicle operation system. The top view of the vehicle which shows a communication area. The sequence chart which shows the process sequence of a vehicle-mounted control part and a smart phone control part.

Hereinafter, an embodiment of an in-vehicle communication system in which a mobile terminal is embodied as a smartphone will be described with reference to the drawings.
As shown in FIG. 1, the in-vehicle communication system 1 performs various vehicle controls through wireless communication between the vehicle 10 and the smartphone 20.

<Configuration of smartphone>
The smartphone 20 includes a smartphone control unit 21, a BLUETOOTH communication unit (hereinafter referred to as a BT communication unit) 22, an SHF communication unit 24, a microphone 25, a speaker 26, a touch panel display 27, and a battery 28. . The battery 28 supplies power for driving each part of the smartphone 20.

  The smartphone control unit 21 is electrically connected to each of the BT communication unit 22, the SHF communication unit 24, the microphone 25, the speaker 26, and the touch panel display 27. The BT communication unit 22, the SHF communication unit 24, the microphone 25, the speaker 26, and the touch panel display 27 are controlled by the smartphone control unit 21.

  The BT communication unit 22 performs radio communication with a BT communication unit mounted on another device by performing frequency hopping that randomly changes the frequency of the 2.4 GHz band divided into 40 frequency channels. Do. The BT communication unit 22 is connected to the BT antenna 22a. The BT antenna 22a wirelessly transmits various signals toward a preset communication area. The BT antenna 22a receives various radio signals in the 2.4 GHz band.

  The BT communication unit 22 converts various signals generated by the smartphone control unit 21 into a 2.4 GHz band radio signal corresponding to one of 79 frequency channels that are randomly determined, and the radio signal is converted into a BT antenna. Wirelessly transmitted via 22a. The BT communication unit 22 demodulates the 2.4 GHz band radio signal received via the BT antenna 22a into a pulse signal. The BLUETOOTH communication unit 22 corresponds to the terminal side BLUETOOTH communication unit.

  The SHF communication unit 24 performs wireless communication with a communication satellite or a broadcasting station through a radio signal in the SHF (Super Hi Frequency) band. The SHF communication unit 24 is connected to the SHF antenna 24a. The SHF antenna 24a wirelessly transmits various signals in a preset direction. The SHF antenna 24a receives various radio signals in the SHF band.

  The SHF communication unit 24 converts various signals generated by the smartphone control unit 21 into radio signals in the SHF band, and wirelessly transmits the radio signals via the SHF antenna 24a. Further, the SHF communication unit 24 demodulates the SHF band radio signal received via the SHF antenna 24a into a pulse signal.

The microphone 25 converts sound into a pulse signal.
The speaker 26 converts the pulse signal into sound.
The touch panel display 27 converts information indicating the touch position into a pulse signal. In addition, a video based on a video signal described later is displayed. The SHF communication unit 24, the microphone 25, the speaker 26, and the touch panel display 27 correspond to a terminal function unit.

  The smartphone control unit 21 comprehensively controls each unit of the smartphone. The memory 21 a of the smartphone control unit 21 stores a passkey common to the vehicle 10, an ID code common to the vehicle 10, and a smartphone code unique to the smartphone control unit 21. The memory 21a corresponds to a terminal side storage unit.

  The smartphone control unit 21 has a search mode for searching for a communication partner through the BT communication unit 22, a non-search mode for not searching for a communication partner, and a BT impossible mode for not performing BT communication. The touch panel display 27 is switched between the search mode and the BT impossible mode and between the searched mode and the BT impossible mode. The search mode and the searched mode are executed each time a predetermined time set in advance elapses. The predetermined time, which is a reference for switching between the search mode and the search mode, is stored in the memory 21a in advance.

  In addition, when the smartphone control unit 21 searches for itself or exchanges a common passkey with the communication partner as a result of the search, the smartphone control unit 21 exchanges a BT signal described later with the communication partner. It is determined that the link to be established has been established. The smart phone control unit 21 always sends and receives a BT signal to and from a communication partner with which the link is established while the link is established, regardless of the search mode or the searched mode.

In addition, the smart phone control part 21 judges that the link with the said communication other party was cancelled | released when it becomes impossible to receive the BT signal from the communication other party with which the link is established.
The smartphone control unit 21 in the search mode requests a device having a passkey and a smartphone code stored in the memory 21a and a passkey common to itself to establish a link between itself and the device. When link establishment is permitted, a link request signal including link request information for requesting a passkey is generated. The generated link request signal is wirelessly transmitted through the BT communication unit 22.

  In the search mode and the searched mode, when receiving the link request signal from another device, the smartphone control unit 21 determines whether or not the pass key included in the link request signal is the same as the pass key stored in the memory 21a. If it is determined that the link is common, it is determined that a link has been established with a communication partner having a code unique to the device included in the link response signal, and the passkey and smartphone code stored in the memory 21a, and the link A link response signal including link permission information indicating that the establishment of the link is permitted is generated. The generated link response signal is wirelessly transmitted through the BT communication unit 22.

  In the search mode, when the smartphone control unit 21 receives a link response signal from another device through the BT communication unit 22, the smartphone control unit 21 determines whether the passkey included in the link response signal is the same as the passkey stored in the memory 21a. To do. If it is determined that the link is common, it is determined that a link has been established with a communication partner having a code unique to the device included in the link response signal. For example, when the code unique to the device included in the link response signal is a vehicle-mounted code described later, it is determined that a link has been established with the vehicle-mounted control unit 11.

  When there is a communication partner with which a link has been established, the smartphone control unit 21 generates a BT signal including various information and a smartphone code input to each unit of the smartphone 20. The generated BT signal is wirelessly transmitted through the BT communication unit 22.

  Moreover, the smart phone control part 21 will drive each part according to the information contained in a BT signal, if a BT signal is received from the communicating party with which the link is established. For example, when ID code request information for requesting an ID code is included in the BT signal, a BT signal including the ID code and the smartphone code stored in the memory 21a is generated. The generated BT signal is wirelessly transmitted through the BT communication unit 22. If the received BT signal includes video display request information, a video signal is generated based on the information. The smartphone control unit 21 corresponds to a terminal side control unit.

<Vehicle configuration>
As shown in FIG. 1, the vehicle 10 includes an in-vehicle control unit 11, a BT communication unit 12, an engine switch 14, an engine control device 15, a door handle switch 16, a door lock device 17, and an input device 18. It is equipped with.

  The in-vehicle control unit 11 is electrically connected to each of the BT communication unit 12, the engine switch 14, the engine control device 15, the door handle switch 16, the door lock device 17, and the input device 18. The in-vehicle control unit 11 controls the BT communication unit 12, the engine switch 14, the engine control device 15, the door handle switch 16, the door lock device 17, and the input device 18.

  The BT communication unit 12 performs wireless communication with a BT communication unit mounted on another device. The BT communication unit 12 is connected to the BT antenna 12a. As shown in FIG. 2, the BT antenna 12a wirelessly transmits various signals toward a preset communication area S3. The BT antenna 12a receives various radio signals in the 2.4 GHz band.

  The BT communication unit 12 converts various signals generated by the in-vehicle control unit 11 into 2.4 GHz band radio signals, and wirelessly transmits the radio signals via the BT antenna 12a. The BT communication unit 12 demodulates a 2.4 GHz band radio signal received via the BT antenna 12a into a pulse signal.

  The BT communication unit 12 includes an RSSI circuit 12b. The RSSI circuit 12b detects the RSSI value (signal strength) of the radio signal received via the BT antenna 12a. The BT communication unit 12 corresponds to a vehicle side BLUETOOTH communication unit.

The engine switch 14 detects a user's push operation.
The engine control device 15 controls starting and stopping of the engine.
The door handle switch 16 detects contact with the door handle.

The door lock device 17 switches between locking and unlocking the door lock. The engine control device 15 and the door lock device 17 correspond to in-vehicle devices.
The input device 18 detects an input operation for the user.

  The memory 11 a of the in-vehicle control unit 11 stores a pass key common to the smartphone 20, an ID code common to the smartphone 20, and an in-vehicle code unique to the in-vehicle control unit 11. The memory 11a corresponds to an in-vehicle storage unit.

  In addition, the memory 11a has an outdoor area when the vehicle 10 receives a radio signal transmitted from the outdoor determination area S2 that is narrower than the communication area S3 shown in FIG. 2 and covers the outer periphery of the vehicle door. The determination RSSI value is stored. Further, in the memory 11a, when the vehicle 10 receives a radio signal transmitted from the indoor determination area S1 which is set smaller than the outdoor determination area S2 shown in FIG. 2 and does not leak outside the vehicle door. The room determination RSSI value is stored.

  The in-vehicle control unit 11 has a search mode for searching for a communication partner through the BT communication unit 12, a non-search mode for not searching for a communication partner, and a BT impossible mode for not performing BT communication. Switching between the search mode and the BT disabled mode and between the searched mode and the BT disabled mode are performed by operating the input device 18. The search mode and the searched mode are executed each time a predetermined time set in advance elapses. The predetermined time, which is a reference for switching between the search mode and the search mode, is stored in advance in the memory 11a.

  The in-vehicle control unit 11 exchanges a BT signal with the communication partner when the search is performed by itself or when a common passkey is exchanged with the communication partner. Judge that the link has been established. In either the search mode or the searched mode, the in-vehicle control unit 11 always exchanges a BT signal with the communication partner with which the link is established while the link is established.

The in-vehicle controller 11 determines that the link with the communication partner has been canceled when the BT signal cannot be received from the communication partner with which the link has been established.
The in-vehicle control unit 11 in the search mode requests a device having a pass key and in-vehicle code stored in its own memory 11a and a pass key common to itself to establish a link with itself. When the establishment of the link is permitted, a link request signal including link request information for requesting a pass key is generated. The generated link request signal is wirelessly transmitted through the BT communication unit 12.

  In the search mode and the searched mode, the in-vehicle control unit 11 receives the link request signal from another device, and determines whether or not the pass key included in the link request signal is the same as the pass key stored in the memory 11a. When determined to be common, it is determined that a link has been established with a communication partner having a code unique to the device included in the link response signal, and the passkey and vehicle code stored in the memory 11a; A link response signal including link permission information indicating that link establishment is permitted is generated. The generated link response signal is wirelessly transmitted through the BT communication unit 12.

  In the search mode, when the in-vehicle control unit 11 receives a link response signal from another device through the BT communication unit 12, it determines whether or not the pass key included in the link response signal is the same as the pass key stored in the memory 11a. To do. If it is determined that the link is common, it is determined that a link has been established with a communication partner having a code unique to the device included in the link response signal. For example, when the code unique to the device included in the link response signal is a smartphone code, it is determined that a link has been established with the smartphone control unit 21.

  When there is a communication partner with which a link has been established, the in-vehicle control unit 11 generates a BT signal including various information and in-vehicle code input from each unit of the vehicle 10 to itself. The generated BT signal is wirelessly transmitted through the BT communication unit 12.

  Moreover, the vehicle-mounted control part 11 will drive each part according to the information contained in a BT signal, if a BT signal is received from the communicating party with which the link is established. For example, when ID code request information for requesting an ID code is included in the BT signal, a BT signal including the ID code and the in-vehicle code stored in the memory 11a is generated. The generated BT signal is wirelessly transmitted through the BT communication unit 12.

  When the RSSI value of the received BT signal is greater than or equal to the indoor determination RSSI value, the in-vehicle controller 11 determines that the communication partner is within the indoor determination area S1 and the RSSI value of the received BT signal is greater than the indoor determination RSSI value. If the outdoor determination RSSI value is low or higher, it is determined that the communication partner is located in the outdoor determination area S2.

  The in-vehicle control unit 11 is a case where the ID code common to the ID code stored in the memory 11a is included in the BT signal received from the smartphone 20, and the smartphone 20 is located outdoors from the RSSI value of the signal. If it is determined that the door lock device 17 is present, the operation of the door lock device 17 is permitted. In this state, when it is detected that the door handle switch 16 is pushed, the vehicle-mounted control unit 11 switches between locking and unlocking the door lock through the door lock device 17.

  Moreover, the vehicle-mounted control part 11 is a case where the ID code common with the ID code memorize | stored in the memory 11a is contained in BT signal received from the smart phone 20, Comprising: The smart phone 20 is located indoors from the RSSI value of the signal. If it is determined that the engine is being controlled, the engine control device 15 permits the engine start control. In this state, when it is detected that the engine switch 14 has been pushed, the in-vehicle control unit 11 performs engine start control through the engine control device 15.

  In the case where the vehicle-mounted control unit 11 performs engine start control with a BT signal including video display request information for requesting video display indicating that the door lock is locked and unlocked. Each generates a BT signal including video display request information for requesting video display indicating that.

<Operation of in-vehicle communication system>
Next, the operation of the in-vehicle communication system 1 will be described according to the sequence chart shown in FIG.

  As shown in FIG. 3, the in-vehicle control unit 11 periodically generates a link request signal (step S1). When the user who has the smartphone 20 enters the communication area S3, the smartphone 20 can receive a link request signal.

When the smartphone control unit 21 recognizes the link request signal, the smartphone control unit 21 generates a link response signal (step S2).
The in-vehicle controller 11 recognizes that the link with the smartphone controller 21 has been established through recognition of the link response signal (step S3). Moreover, the vehicle-mounted control part 11 judges the position of the smart phone 20 with respect to the vehicle 10 from the signal strength of the link response signal to receive (step S4). And the vehicle-mounted control part 11 produces | generates BT signal (step S5).

  The smartphone control unit 21 recognizes that the link with the in-vehicle control unit 11 has been established through the recognition of the BT signal (step S6). Then, a BT signal is generated (step S7).

  The in-vehicle control unit 11 recognizes that the link with the smartphone control unit 21 is continued through the recognition of the BT signal (step S3). Thereafter, steps S3 to S7 are repeated. When the link is continued, a BT signal is exchanged between the in-vehicle control unit 11 and the smartphone control unit 21. Therefore, the determination of the continuation of the link and the determination of the position of the smartphone 20 with respect to the vehicle are performed through the BT signal.

After determining the position of the smartphone 20, the in-vehicle control unit 11 generates a challenge signal (step S11).
When the smartphone control unit 21 recognizes the challenge signal, the smartphone control unit 21 generates a response signal (step S12).

  When the in-vehicle control unit 11 recognizes the response signal, the on-vehicle control unit 11 enters the vehicle control permission state (step S13) and holds the permission state for a certain time. When it is determined that the smartphone 20 is positioned outside the vehicle in the vehicle control permitted state, the in-vehicle control unit 11 detects that the door handle switch 16 has been pushed, and switches the door lock from the locked state to the unlocked state (Step S1). S14). And the vehicle-mounted control part 11 produces | generates BT signal containing the video display request information which shows that the door lock was switched from locking to unlocking (step S15).

  When the smartphone control unit 21 recognizes the BT signal including the video display request information, the smartphone control unit 21 generates a video signal based on the information (step S16). Accordingly, an image indicating that the door lock is switched from locked to unlocked is displayed on the touch panel display 27.

Even after the video signal is generated, steps S3 to S7 are repeated until the link is canceled.
Moreover, the vehicle-mounted control part 11 implements step S11-S12 again, after the said vehicle control permission state is cancelled | released because the fixed time passed.

  Although the case where the door handle switch 16 is operated after entering the vehicle control permission state has been described here, each process is performed in the same flow as the sequence chart described above also when the engine switch 14 is operated. When the engine switch 14 is operated with the smartphone 20 positioned outside the vehicle, and when the door handle switch 16 is operated with the smartphone 20 positioned inside the vehicle, the position and operation of the smartphone 20 with respect to the vehicle 10 Since the in-vehicle device to be matched does not match, the in-vehicle device does not operate.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) The in-vehicle control unit 11 performs a challenge response after the link with the smartphone control unit 21 is established, and enters a vehicle control permission state. When the engine switch 14 is operated while the vehicle control permission state is maintained, the engine starts, and when the door handle switch 16 is operated, the door locking / unlocking control is executed smoothly. Therefore, the responsiveness from when the user operates the switch until the in-vehicle device operates is good.

  (2) The in-vehicle control unit 11 determines the position of the smartphone 20 with respect to the vehicle 10 through the signal strength of the BT signal exchanged with the smartphone control unit 21 with which the link is established. Therefore, when the engine switch 14 or the door handle switch 16 is operated, the position of the smartphone 20 has already been determined. Therefore, compared with a system that performs position determination after the operation unit is operated, the responsiveness to the operation Is good.

  (3) The in-vehicle control unit 11 operates the in-vehicle device (in this case, the door lock device 17), then generates a BT signal including video display request information indicating that, and indicates that the in-vehicle device has operated. 20 touch panel displays 27 are displayed. Thereby, the user can recognize which function of the vehicle 10 has been controlled through the smartphone 20.

In addition, you may change the said embodiment as follows.
-In above-mentioned embodiment, although the vehicle-mounted control part 11 judged the position of the smart phone 20 with respect to the vehicle 10 through the signal strength of BT signal, it does not need to judge. Even in such a configuration, the same effects as the effects (1) and (3) of the above embodiment can be obtained.

  -In above-mentioned embodiment, after operating the vehicle equipment, the vehicle-mounted control part 11 does not need to produce | generate the BT signal containing the video display request information which shows that. Even in such a configuration, the same effects as the effects (1) and (2) of the above embodiment can be obtained.

In the above embodiment, switching between the search mode and the non-search mode is not limited to time.
In the above embodiment, the in-vehicle control unit 11 establishes a link with the communication partner if the pass key of the received link request signal is common with the own pass key in the search mode and the non-search mode. In addition to this, the link establishment may be determined after confirming the code unique to the device. For example, if the in-vehicle control unit 11 is a link request signal from the smartphone control unit 21 that has canceled the link from itself through a code (in this case, a smartphone code) unique to the device included in the link request signal, A link is not established with the control unit 21. When comprised in this way, the smart phone control part 21 can establish a link between the apparatuses which have another BT communication part. The same applies when the in-vehicle control unit 11 is replaced with the smartphone control unit 21.

  In the above embodiment, the communication partner of the in-vehicle control unit 11 is not limited to the smartphone 20. For example, a terminal that does not have a telephone function or a terminal that has a playback or recording function may be used as long as it communicates using BLUETOOTH.

DESCRIPTION OF SYMBOLS 1 ... Vehicle-mounted communication system, 10 ... Vehicle, 11 ... Vehicle-mounted control part, 11a ... Memory (vehicle-mounted memory | storage part), 11b ... Vehicle-mounted counter, 12 ... BT communication part, 14 ... Engine switch, 15 ... Engine control apparatus (vehicle-mounted apparatus) , 16 ... Door handle switch, 17 ... Door lock device (vehicle equipment), 18 ... Input device, 20 ... Smartphone (mobile terminal), 21 ... Smartphone control unit (terminal side control unit), 21a ... Memory (terminal side storage unit) ), 22 ... BT communication part, 24 ... SHF communication part, 25 ... microphone, 26 ... speaker, 27 ... touch panel display, 28 ... battery.

Claims (2)

A terminal-side storage unit that stores an authentication key, a verification key, and a pass key, and a terminal-side BLUETOOTH communication unit that wirelessly communicates with another device that has established a link through the exchange of the pass key. A mobile terminal having a terminal function unit that exhibits power, and a battery that supplies driving power to each part of the terminal,
Vehicle-side BLUETOOTH that communicates wirelessly between the in-vehicle storage unit that stores the authentication key, the verification key, and the passkey, and other devices that attempt to periodically exchange the passkey and establish a link through the exchange of the passkey Condition that the collation of the collation key performed through wireless communication between the communication unit, the operation unit operated by the user, and the portable terminal with the link established is established and the operation unit is operated An in-vehicle control unit that executes control of the in-vehicle device,
The in-vehicle control unit performs the verification of the verification key via the authentication key after the establishment of the link with the portable terminal, and after the verification is established, the operation to the operation unit is used as a trigger. Execute control of in-vehicle equipment ,
The in-vehicle device has different functions to be executed according to the position of the mobile terminal with respect to the vehicle,
The in-vehicle control unit determines the position of the mobile terminal with respect to the vehicle through a radio signal exchanged with the mobile terminal while the link is established, and continues the link until the link is canceled. An in- vehicle communication system that repeatedly performs determination and determination of the position of the mobile terminal with respect to the vehicle. The in-vehicle communication system according to claim 1 ,
The mobile terminal has a notification unit appealing to the user's senses,
The in-vehicle control unit is an in-vehicle communication system that transmits a radio signal instructing the portable terminal to notify that after performing control of the in-vehicle device.