JP2019173545A - Radio communication system for vehicle, identification information registration method - Google Patents

Abstract

To provide technology realizing communication between a plurality of on-vehicle devices even with one portable device for a radio communication system for a vehicle performing communication between on-vehicle device installed in a vehicle and the portable device.SOLUTION: A first portable device 10a capable of being installed in a vehicle is provided with an input section, and an output section capable of outputting at least unlock instruction to the vehicle. The first portable device 10a capable of radio communication with a first on-vehicle 20a is provided with an operation section. The first portable device 10a sends a fourth signal having a first value of a second identification information to the first on-vehicle device 20a. The first on-vehicle device 20a receiving the fourth signal makes a stored second identification information the first value.SELECTED DRAWING: Figure 4

Description

  The present disclosure relates to a registration technique, and more particularly, to a vehicular wireless communication system and an identification information registration method for performing communication between an on-vehicle device mounted on a vehicle and a portable device.

  Wireless communication is performed to lock and unlock the door lock of the vehicle. The vehicle-mounted device mounted on the vehicle transmits a request signal, and when the portable device carried by the vehicle user transmits reply data, the vehicle-mounted device switches between locking and unlocking the door lock. Before executing such processing, the portable device is registered in the vehicle-mounted device. In the registration operation, a unique vehicle ID (Identification) assigned to the vehicle-mounted device is written from the vehicle-mounted device to the portable device (see, for example, Patent Document 1).

JP 2003-20835 A

  When the vehicle ID unique to the vehicle-mounted device is registered in the portable device, one portable device can be used only for one vehicle. Therefore, a user who owns a plurality of vehicles of the same manufacturer may carry a plurality of portable devices or mistakenly try to use a portable device for another vehicle. Therefore, it is required to control the door locks of a plurality of vehicles from one portable device.

  The present disclosure has been made in view of such a situation, and an object thereof is one portable device in a vehicle wireless communication system that performs communication between an on-vehicle device mounted on a vehicle and a portable device. Is to provide a technology for communicating with a plurality of vehicle-mounted devices.

  In order to solve the above-described problem, a vehicle wireless communication system according to an aspect of the present disclosure can be mounted on a vehicle and includes an input unit and an output unit that can output at least an unlocking instruction to the vehicle. And a portable device capable of wireless communication with the vehicle-mounted device and having an operation unit. The portable device holds the first value of the first identification information and the first value of the second identification information, and when the operation unit receives a predetermined operation, the portable device sets the first value of the first identification information. The output unit of the vehicle-mounted device that has received the first value of the first identification information is transmitted to the vehicle based on the first value of the first identification information. The unlocking instruction is output, and the vehicle-mounted device holds at least the second value of the second identification information. When the input unit receives a predetermined input, the on-vehicle device has at least the second value of the second identification information. The portable device that transmits the signal 2 to the portable device using wireless communication and receives the second value of the second identification information is based on the first value and the second value of the second identification information. The wireless communication is used to transmit the third signal, and the output unit of the vehicle-mounted device that receives the third signal outputs an unlocking instruction to the vehicle based on the third signal. In the vehicular wireless communication system, at least the first identification information has a different value for each portable device, the first identification information and the second identification information are different from each other, and the portable device is connected to the vehicle-mounted device. The vehicle-mounted device that transmits the fourth signal having the first value of the identification information and receives the fourth signal sets the second identification information held to the first value.

  Another aspect of the present disclosure is an identification information registration method. This method can be mounted on a vehicle, has an input unit, an on-vehicle device having an output unit capable of outputting at least an unlocking instruction to the vehicle, and a portable device that can communicate with the on-vehicle device wirelessly and has an operation unit. And have a machine. The portable device holds the first value of the first identification information and the first value of the second identification information, and when the operation unit receives a predetermined operation, the portable device sets the first value of the first identification information. The output unit of the vehicle-mounted device that has received the first value of the first identification information is transmitted to the vehicle based on the first value of the first identification information. The unlocking instruction is output, and the vehicle-mounted device holds at least the second value of the second identification information, and when the input unit receives a predetermined input, the on-vehicle device has at least the second value of the second identification information. The portable device that transmits the signal 2 to the portable device using wireless communication and receives the second value of the second identification information is based on the first value and the second value of the second identification information. The wireless communication is used to transmit the third signal, and the output unit of the vehicle-mounted device that has received the third signal outputs an unlocking instruction to the vehicle based on the third signal, At least the first identification information has a different value for each individual portable device, and the first identification information and the second identification information are different from each other, and is an identification information registration method usable in a vehicle wireless communication system, The portable device transmits the fourth signal having the first value of the second identification information to the vehicle-mounted device, and the vehicle-mounted device that has received the fourth signal uses the second identification information held as the first value. .

  It should be noted that any combination of the above-described components and a representation of the present disclosure converted between a method, an apparatus, a system, a recording medium, a computer program, and the like are also effective as an aspect of the present disclosure.

  According to the present disclosure, in a vehicle wireless communication system that performs communication between a vehicle-mounted device mounted on a vehicle and a portable device, even a single portable device can communicate with a plurality of vehicle-mounted devices.

FIGS. 1A and 1B are diagrams illustrating an outline of keyless communication by the vehicle wireless communication system according to the embodiment. FIGS. 2A to 2C are diagrams illustrating an outline of smart communication by the vehicle wireless communication system of the embodiment. It is a figure which shows the structure of the radio | wireless communications system for vehicles of an Example. It is a figure which shows the outline | summary of the registration process by the radio | wireless communications system for vehicles of FIG. FIGS. 5A and 5B are diagrams showing the formats of the portable device search signal and the response signal in FIG. 6A and 6B are diagrams showing the format of the information request signal and the response signal in FIG. FIGS. 7A and 7B are diagrams showing the format of the write instruction signal and the response signal in FIG. It is a sequence diagram which shows the registration procedure by the radio | wireless communications system for vehicles of FIG.

  Before describing the present disclosure in detail, an outline will be described. In an embodiment of the present disclosure, a vehicle that performs wireless communication for locking or unlocking a door lock of a vehicle between an on-vehicle device mounted on the vehicle and a portable device (electronic key) possessed by a user. The present invention relates to a wireless communication system. Two types of communication sequences are defined in a vehicle wireless communication system that performs wireless communication between an on-vehicle device and a portable device. The first type is a communication sequence for executing bidirectional communication between the vehicle-mounted device and the portable device, and is called “smart communication”. The second type is a communication sequence for executing one-way communication from the portable device to the vehicle-mounted device, and is called “keyless communication”. In smart communication, identification information is used to register a combination of a portable device and a vehicle-mounted device. An example of the identification information is a vehicle ID used in the background art. As in the background art, when a vehicle ID that is different for each vehicle-mounted device is written from the vehicle-mounted device to the portable device, one portable device can be used for only one vehicle. In consideration of user convenience, it is preferable that one portable device can be used for a plurality of vehicles.

  In this embodiment, common identification information (hereinafter referred to as “group ID (group identification information)”) is assigned to each of the plurality of vehicle-mounted devices so that one portable device can be used for a plurality of vehicles. . In order to assign such a group ID, the following processing is executed. A group ID is assigned in advance to the first portable device. The first portable device registers the group ID in the first vehicle-mounted device whose group ID is not registered. In addition, the first portable device is a second on-vehicle device different from the first on-vehicle device, and causes the group ID to be registered to a second on-vehicle device whose group ID is not registered. As a result, since the group IDs of the first portable device, the first on-vehicle device, and the second on-vehicle device are common, the first portable device can perform smart communication with the first on-vehicle device and the second on-vehicle device. is there.

  Under such circumstances, when registering the second portable device to the first on-vehicle device and the second on-vehicle device in which the group ID is registered, the first on-vehicle device causes the second portable device to register the group ID. . In addition, although the group ID different from the group ID assigned to the first portable device is assigned to the second portable device, a different group ID is assigned to the second portable device in response to an instruction from the first on-vehicle device. Overwrite the group ID assigned to one mobile device. The second vehicle-mounted device registers the group ID in the second portable device. As a result, the group IDs of the first portable device, the second portable device, the first on-vehicle device, and the second on-vehicle device are common.

  FIGS. 1A and 1B show an outline of keyless communication by the vehicular wireless communication system 1000. FIG. The vehicle wireless communication system 1000 includes a portable device 10 and an on-vehicle device 20, and the on-vehicle device 20 is mounted on a vehicle 50. The portable device 10 holds a portable ID and a group ID. The portable ID is an ID for identifying the portable device 10 in keyless communication, and has a different value for each portable device 10. The group ID is an ID used in smart communication described later. The mobile ID and the group ID are different from each other. When the mobile ID is called first identification information, the group ID is called second identification information. For example, the portable ID held in the portable device 10 is the first value, and the group ID is the first value. These first values may be different values. When the operation unit receives a predetermined operation, for example, when the user receives an operation of unlocking the door lock, the portable device 10 transmits a keyless signal to the vehicle-mounted device 20. The operation of unlocking the door lock by the user is, for example, that a button (not shown) provided on the portable device 10 is pushed down. The keyless signal may be referred to as a first signal.

  FIG. 1B shows the format of the keyless signal. For the keyless signal, a preamble, a synchronization signal, and data are arranged in this order. The preamble and the synchronization signal are the same as those in the response signal. The data includes a command, a mobile ID, and a rolling code. The command indicates information for specifying a function to be executed by keyless communication, for example, an instruction to unlock the door lock. The mobile ID is, for example, a first value. The rolling code indicates a value that increases each time a keyless signal is transmitted from the portable device 10, and is indicated by, for example, 2 bytes. Specifically, the value of the rolling code increases by “1” every time the keyless signal is transmitted. Returning to FIG.

  The vehicle-mounted device 20 receives the keyless signal. The vehicle-mounted device 20 determines whether or not to unlock the door lock of the vehicle 50 based on the mobile ID and the rolling code included in the keyless signal. When it is determined that the unlocking is to be performed, the output unit of the vehicle-mounted device 20 outputs an unlocking instruction to the vehicle 50. It should be noted that the same processing is performed for locking the door lock of the vehicle 50 only by changing the content of the command.

  FIGS. 2A to 2C show an outline of smart communication by the vehicular wireless communication system 1000. FIG. Smart communication is also referred to as a smart entry method, a smart key method, or a passive keyless entry (PKE) method. FIG. 2A shows a locking operation by the vehicle wireless communication system 1000. When getting off the vehicle 50, the user stops the engine or motor of the vehicle 50, opens the door, and closes the door after getting off. The input unit of the vehicle-mounted device 20 receives a series of operations of stopping the engine or motor of the vehicle 50, opening the door, and closing the door as a predetermined input. The predetermined input may be to pull the door knob. The in-vehicle device 20 transmits a search signal to the portable device 10 triggered by the input unit receiving a predetermined input. The search signal is an LF (Low Frequency) signal, for example, a signal in the 125 kHz band. The communication distance of the LF signal is limited to a range of about 2 m from the vehicle 50.

  FIG. 2B shows the format of the search signal. The search signal sequentially arranges a wake pattern, a command, a group ID, a random number, and a burst for RSSI (Received Signal Strength Indicator). The wake pattern is a signal for causing the portable device 10 to detect reception of the search signal, and is a signal having a pattern known to the portable device 10. The command indicates a function to be executed by smart communication, for example, a function for instructing locking of the door lock. The command is encrypted. The group ID is an ID for identifying a group including the vehicle-mounted device 20. The group ID is held in the vehicle-mounted device 20. The RSSI burst is a signal for causing the portable device 10 to measure the received signal strength. Returning to FIG.

  When the portable device 10 receives the search signal from the vehicle-mounted device 20, the portable device 10 extracts the group ID from the search signal. The portable device 10 determines whether the search signal is a valid search signal from the vehicle-mounted device 20 based on the extracted group ID. For example, when the extracted group ID value matches the group ID value held in the portable device 10, it is determined that the search signal is valid from the vehicle-mounted device 20. When recognizing that the search signal is valid from the vehicle-mounted device 20, the portable device 10 decodes the content of the command and measures the reception strength of the search signal received by the portable device 10, for example, RSSI. Following these, the portable device 10 transmits a response signal to the vehicle-mounted device 20. The response signal is a UHF (Ultra High Frequency) signal, for example, a signal in the 300 MHz band, which is the same frequency band as the keyless signal. The UHF signal is also referred to as an RF signal. When the search signal is called the second signal, the keyless signal may be called the third signal. On the other hand, if the portable device 10 recognizes that the search signal is not a valid search signal from the vehicle-mounted device 20, the portable device 10 does not need to transmit a signal and transmits a signal indicating that the search signal is not a valid search signal from the vehicle-mounted device 20. May be.

  FIG. 2C shows the format of the response signal. In the response signal, a preamble, an order ID, a ciphertext, an RSSI value, and a CRC (Cyclic Redundancy Check) are arranged in this order. The preamble is a known signal used for establishing communication (smart communication) between the portable device 10 and the vehicle-mounted device 20. The order ID is an ID for indicating the order of the portable device 10 registered in the vehicle-mounted device 20. The ciphertext is information for indicating that the signal corresponds to the command. The RSSI value indicates the reception strength of the search signal measured in the portable device 10. CRC is an error correction code. Since known techniques may be used for these, description thereof is omitted here. Returning to FIG.

  The vehicle-mounted device 20 receives the response signal from the portable device 10. If it determines with the onboard equipment 20 having received the response with respect to the already transmitted search signal from the portable device 10 based on the order ID and the ciphertext included in the response signal, the output unit of the onboard equipment 20 Outputs an instruction to lock the door. In addition, the same process should just be performed also when unlocking a door lock.

  FIG. 3 shows a configuration of the vehicular wireless communication system 1000. The vehicle wireless communication system 1000 includes the portable device 10 and the vehicle-mounted device 20 as described above, and the vehicle-mounted device 20 is mounted on the vehicle 50. The portable device 10 includes an operation unit 100, a control unit 102, a UHF transmission unit 104, an LF reception unit 106, and a storage unit 110. The vehicle-mounted device 20 includes a UHF receiving unit 200, a control unit 202, an LF transmitting unit 204, and a storage unit 210. The vehicle 50 includes an ECU (Electronic Control Unit) 52 and a door lock mechanism 54.

  A sensor (not shown) mounted on the vehicle 50 detects a series of operations of stopping the engine or motor of the vehicle 50, opening the door, and closing the door. When the ECU 52 is notified of the detection of a series of these operations from the sensor, the ECU 52 outputs the detection of the operations to the control unit 202. When control unit 202 receives an operation detection from ECU 52, control unit 202 determines transmission of a search signal in smart communication. The control unit 202 generates a search signal. At that time, the control unit 202 includes the group ID stored in the storage unit 210 in the search signal. The storage unit 210 also stores an ECU ID. The ECU ID has a different value for each individual vehicle-mounted device 20 and is different from the group ID. The ECU ID may be referred to as third identification information. The third identification information may be regarded as identification information (ID) defined for each vehicle 50, or may be regarded as an ECU serial number (ECU identification information). The control unit 202 outputs the search signal to the LF transmission unit 204. The LF transmission unit 204 transmits a search signal to the portable device 10.

  The LF receiver 106 of the portable device 10 receives the search signal from the vehicle-mounted device 20. The LF receiving unit 106 outputs a search signal to the control unit 102. The control unit 102 extracts the group ID included in the search signal. The control unit 102 performs pair authentication based on the group ID stored in the storage unit 110 and the extracted group ID. Since a publicly known technique should just be used about pair authentication, explanation is omitted here. If pair authentication fails, the processing described later is not executed. On the other hand, when the pair authentication is successful, the control unit 102 generates a response signal. At that time, the control unit 102 includes the order ID stored in the storage unit 110 in the response signal, and includes the RSSI value of the search signal measured by the LF reception unit 106 in the response signal. The control unit 102 outputs a response signal to the UHF transmission unit 104. The UHF transmission unit 104 transmits a response signal to the vehicle-mounted device 20. This corresponds to transmitting a response signal to the vehicle-mounted device 20 as a response to the search signal received from the vehicle-mounted device 20.

  The UHF receiver 200 of the in-vehicle device 20 receives a response signal from the portable device 10. If the UHF receiver 200 does not receive a response signal for a certain period after the LF transmitter 204 transmits the search signal, the controller 202 may retransmit the search signal from the LF transmitter 204. The UHF receiving unit 200 outputs a response signal to the control unit 202. Based on the order ID and ciphertext included in the response signal, the control unit 202 recognizes that a response to the already transmitted search signal has been received from the portable device 10. Following this, the control unit 202 determines locking of the door lock of the vehicle 50. At that time, the RSSI value included in the response signal may be used to determine whether or not to lock the door lock of the vehicle 50. In addition, since a well-known technique should just be used for this, description is abbreviate | omitted here. When determining that the door lock is to be locked, the control unit 202 locks the door lock mechanism 54 via the ECU 52. The operation unit 100 of the portable device 10 is used for keyless communication, but description thereof is omitted here.

  This configuration can be realized by a CPU (Central Processing Unit), memory, or other LSI (Large Scale Integration) of any computer in terms of hardware, and by a program loaded in the memory in terms of software. However, here, functional blocks that are realized by their cooperation are depicted. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms only by hardware, or by a combination of hardware and software.

  As described so far, when the authentication based on the group ID in the vehicle-mounted device 20 and the group ID in the portable device 10 is successful, smart communication for locking or unlocking the door lock is established. . Hereinafter, as an example, it is assumed that the group ID in the vehicle-mounted device 20 and the group ID in the portable device 10 are the same. In such a situation, when the group ID in each of the plurality of in-vehicle devices 20 is the same as the group ID in one portable device 10, a plurality of in-vehicle devices 20 in which the plurality of in-vehicle devices 20 are mounted by one portable device 10. The door lock of the vehicle 50 can be locked or unlocked. Hereinafter, a registration process for making the group ID in each of the plurality of vehicle-mounted devices 20 and the group ID in one portable device 10 the same will be described.

  FIG. 4 shows an outline of registration processing by the vehicle radio communication system 1000. The vehicular wireless communication system 1000 includes a first portable device 10a, a second portable device 10b, which are collectively referred to as a portable device 10, and a first on-vehicle device 20a, which is collectively referred to as an on-vehicle device 20, and a second on-vehicle device 20b. The number of portable devices 10 and the number of vehicle-mounted devices 20 are not limited to “2”. Moreover, in FIG. 4, the vehicle 50 carrying the onboard equipment 20 is abbreviate | omitted. The registration process is generally performed by bringing the first portable device 10a and the first vehicle-mounted device 20a into a vehicle factory or a car dealership.

  A registration tester (not shown) is connected to the first vehicle-mounted device 20a, and an operation on the registration tester is triggered to start the registration process. The same applies to the second portable device 10b and the second vehicle-mounted device 20b. At the stage of starting the registration process, the first portable device 10a, the second portable device 10b, the third portable device 10c, and the fourth portable device 10d are in an unregistered state. Therefore, different group IDs are stored in advance in the first portable device 10a and the second portable device 10b, respectively, and no group ID is stored in the first onboard device 20a and the second onboard device 20b. In the following, (1) registration processing between the first portable device 10a and the first on-vehicle device 20a, (2) registration processing between the second portable device 10b and the first on-vehicle device 20a, and (3) the first portable device 10a. The registration process between the second vehicle-mounted devices 20b and (4) the registration process between the second portable device 10b and the second vehicle-mounted device 20b will be described in this order. At that time, FIG. 3 is also used.

(1) Registration process between the first portable device 10a and the first vehicle-mounted device 20a The control unit 202 of the first vehicle-mounted device 20a starts the registration process and transmits the portable device search signal similar to the search signal described above by LF. The data is transmitted from the unit 204. FIGS. 5A to 5B show the formats of the portable device search signal and the response signal. As shown in FIG. 5A, the portable device search signal arranges a registration wake pattern and a command in order. The registration wake pattern is a signal for causing the portable device 10 to detect reception of the portable device search signal, and is a signal of a pattern known to the portable device 10. The wake pattern for registration is different from the wake pattern. The command indicates a mobile device search. FIG. 5B will be described later, and the processing returns to FIG.

  The control unit 102 of the first portable device 10 a receives the portable device search signal via the LF reception unit 106. The control unit 102 recognizes that the mobile device search is based on the command extracted from the mobile device search signal. The control unit 102 extracts the order ID and group ID [# 1] stored in advance in the storage unit 110, and sends a response signal including the order ID and group ID [# 1] as shown in FIG. Generate. Here, the order ID is set to “1”. The control part 102 transmits a response signal to the 1st onboard equipment 20a via the UHF transmission part 104. FIG. This response signal may be referred to as a fourth signal.

  The control unit 202 of the first vehicle-mounted device 20a receives the response signal via the UHF receiving unit 200. Here, since the first vehicle-mounted device 20a is in an unregistered state, the storage unit 210 stores a group ID having a value meaning unregistered. Since the first vehicle-mounted device 20a is in an unregistered state, the control unit 202 stores the group ID [# 1] included in the response signal in the storage unit 210, whereby a group ID having a value that means unregistered. Is changed to the group ID [# 1]. This group ID is shown in FIG. Moreover, although the control part 202 confirms the order ID memorize | stored in the memory | storage part 210, since the 1st onboard equipment 20a is an unregistered state, order ID is not memorize | stored in the memory | storage part 210. FIG. Therefore, the control unit 202 acquires the order ID “1” included in the response signal and stores it in the storage unit 210.

  Following this, the control unit 202 causes the LF transmission unit 204 to transmit an information request signal. 6A to 6B show the format of the information request signal and the response signal. As shown in FIG. 6A, the portable device search signal sequentially arranges a wake pattern for registration and a command. The command indicates an information request. FIG. 6B will be described later, and the processing returns to FIG.

  The control unit 102 of the first portable device 10 a receives the information request signal via the LF receiving unit 106. The control unit 102 recognizes that it is an information request based on the command extracted from the information request signal. The control unit 102 extracts the portable ID and encryption key stored in advance in the storage unit 110. Moreover, although the control part 102 extracts the registration frequency memorize | stored in the memory | storage part 110, since the 1st portable device 10a is an unregistered state, the registration frequency which shows the number of the onboard equipment 20 made into registration is "0. "Is set. As illustrated in FIG. 6B, the control unit 102 generates a response signal including the mobile ID, the encryption key, and the number of registrations. The control part 102 transmits a response signal to the 1st onboard equipment 20a via the UHF transmission part 104. FIG.

  The control unit 202 of the first vehicle-mounted device 20a receives the response signal via the UHF receiving unit 200. The control unit 102 stores the portable ID and encryption key included in the response signal in the control unit 202. This portable ID and encryption key are shown as a portable ID (first portable device) and an encryption key (first portable device) in FIG. Also, the control unit 202 extracts the number of registrations included in the response signal, and increases the number of registrations by “1”. As a result, the registration count is “1”. The control unit 202 stores the increased number of registrations in the storage unit 210.

  Following this, the control unit 202 acquires the order ID, group ID, and number of registrations stored in the storage unit 210. The control unit 202 generates a write instruction signal including these. 7A to 7B show the format of the write instruction signal and the response signal. As shown in FIG. 7A, the write instruction signal sequentially arranges a wake pattern for registration, a command, an order ID, a group ID, and the number of registrations. The command indicates a write instruction request. FIG. 7B will be described later, and the processing returns to FIG. The control unit 202 causes the LF transmission unit 204 to transmit a write instruction signal.

  The control unit 102 of the first portable device 10 a receives a write instruction signal via the LF receiving unit 106. The control unit 102 recognizes that it is a write instruction based on the command extracted from the write instruction signal. The control unit 102 stores the order ID, group ID, and number of registrations included in the write instruction signal in the storage unit 110. Here, since the group ID to be stored is the same as the group ID stored in advance, the group ID is not changed. Therefore, it can be said that the group ID previously assigned to the first portable device 10a is used between the first portable device 10a and the first vehicle-mounted device 20a. The order ID is the same as the group ID. On the other hand, since the number of registrations to be stored is “1” larger than the number of registrations stored in advance, it can be said that the increased number of registrations is registered in the storage unit 110. After the completion of these processes, the control unit 102 generates a response signal as shown in FIG. The response signal includes ACK. The control part 102 transmits a response signal to the 1st onboard equipment 20a via the UHF transmission part 104. FIG.

  The control unit 202 of the first vehicle-mounted device 20a receives the response signal via the UHF receiving unit 200. When the control unit 202 recognizes the completion of the registration in the first portable device 10a based on the ACK included in the response signal, the control unit 202 completes the registration in the first on-vehicle device 20a.

(2) Registration process between the second portable device 10b and the first vehicle-mounted device 20a Between the second portable device 10b and the first vehicle-mounted device 20a, as between the first portable device 10a and the first vehicle-mounted device 20a. Registration processing is executed. When there is a predetermined input by the self-diagnostic function (On-Board Diagnostics; OBD), the control unit 202 of the first vehicle-mounted device 20a starts a registration process and transmits a portable device search signal from the LF transmission unit 204. The control unit 102 of the second portable device 10b receives the portable device search signal via the LF reception unit 106. The control unit 102 extracts the order ID and group ID stored in advance in the storage unit 110, and generates a response signal including the order ID and group ID as shown in FIG. Again, the order ID is set to “1”. The group ID is set with another group ID in the second portable device 10b different from the group ID in the first portable device 10a. That is, each portable device 10 retains the group ID value in the storage unit 110 so as to be rewritable. Here, the value of the group ID initially held has an initial value, and the initial value is different for each individual portable device 10. The control part 102 transmits a response signal to the 1st onboard equipment 20a via the UHF transmission part 104. FIG.

  The control unit 202 of the first vehicle-mounted device 20a receives the response signal via the UHF receiving unit 200. Since the control unit 202 has already stored the group ID in the storage unit 210, the control unit 202 discards the group ID included in the response signal. In addition, the control unit 202 confirms that the order ID “1” is already stored in the storage unit 210. Therefore, the control unit 202 changes the order ID “1” included in the response signal to “2” and stores the order ID “2” in the storage unit 210. Following this, the control unit 202 causes the LF transmission unit 204 to transmit an information request signal.

  The control unit 102 of the second portable device 10b receives the information request signal via the LF receiving unit 106. The control unit 102 extracts the number of registrations stored in the storage unit 110, but since the second portable device 10b is in an unregistered state, the number of registrations is set to “0”. As illustrated in FIG. 6B, the control unit 102 transmits a response signal including the mobile ID, the encryption key, and the number of registrations to the first vehicle-mounted device 20 a via the UHF transmission unit 104.

  The control unit 202 of the first vehicle-mounted device 20a receives the response signal via the UHF receiving unit 200. The control unit 102 stores the portable ID and encryption key included in the response signal in the control unit 202. The portable ID and encryption key are shown as a portable ID (second portable device) and an encryption key (second portable device) in FIG. Also, the control unit 202 extracts the number of registrations included in the response signal, and increases the number of registrations by “1”. As a result, the registration count is “1”. The control unit 202 stores the increased number of registrations in the storage unit 210. As shown in FIG. 3, the combination of the portable ID, encryption key, order ID, and registration count for the first portable device 10a, and the combination of the portable ID, encryption key, order ID, and registration count for the second portable device 10b. Are stored separately.

  Following this, the control unit 202 acquires the order ID, group ID, and number of registrations stored in the storage unit 210. This group ID is the group ID [# 1] assigned to the first portable device 10a. The control unit 202 causes the LF transmission unit 204 to transmit a write instruction signal including these. The write instruction signal may be referred to as a fifth signal.

  The control unit 102 of the second portable device 10b receives the write instruction signal via the LF reception unit 106. The control unit 102 stores the order ID, the group ID [# 1], and the number of registrations included in the write instruction signal in the storage unit 110. That is, the control unit 102 changes the group ID stored in advance in the storage unit 110 to the group ID [# 1]. Therefore, it can be said that the second portable device 10b registers the group ID received from the first vehicle-mounted device 20a instead of the other group ID that has already been stored. As a result, the group ID previously assigned to the first portable device 10a is used between the first portable device 10a, the second portable device 10b, and the first on-vehicle device 20a. The increased number of registrations is also registered in the storage unit 110. After the completion of these processes, the control unit 102 transmits a response signal to the first vehicle-mounted device 20a via the UHF transmission unit 104.

(3) Registration process between the first portable device 10a and the second vehicle-mounted device 20b The registration process is executed between the first portable device 10a and the second vehicle-mounted device 20b as before. The control unit 202 of the second vehicle-mounted device 20b starts a registration process and transmits a portable device search signal from the LF transmission unit 204. The control unit 102 of the first portable device 10 a receives the portable device search signal via the LF reception unit 106. The control unit 102 extracts the order ID and group ID stored in the storage unit 110, and generates a response signal including the order ID and group ID as shown in FIG. Again, the order ID is set to “1”. The control unit 102 transmits a response signal to the second vehicle-mounted device 20b via the UHF transmission unit 104.

  The control unit 202 of the second vehicle-mounted device 20b receives the response signal via the UHF receiving unit 200. Since the second vehicle-mounted device 20b is in an unregistered state, the control unit 202 registers the group ID by storing the group ID included in the response signal in the storage unit 210. This group ID is indicated as group ID [# 1] in FIG. As described above, the number of the vehicle-mounted devices 20 that can hold the group ID of one portable device 10 is not limited to “1”, but may be “2 or more”. Moreover, although the control part 202 confirms order ID memorize | stored in the memory | storage part 210, since the 2nd vehicle equipment 20b is an unregistered state, order ID is not memorize | stored in the memory | storage part 210. FIG. Therefore, the control unit 202 acquires the order ID “1” included in the response signal and stores it in the storage unit 210. Following this, the control unit 202 causes the LF transmission unit 204 to transmit an information request signal.

  The control unit 102 of the first portable device 10 a receives the information request signal via the LF receiving unit 106. The control unit 102 extracts the portable ID and encryption key stored in advance in the storage unit 110. In addition, the control unit 102 extracts the registration count “1” stored in the storage unit 110. The control unit 102 transmits a response signal including the mobile ID, the encryption key, and the number of registrations to the second vehicle-mounted device 20b via the UHF transmission unit 104.

  The control unit 202 of the second vehicle-mounted device 20b receives the response signal via the UHF receiving unit 200. The control unit 102 stores the portable ID and encryption key included in the response signal in the control unit 202. This portable ID and encryption key are shown as a portable ID (first portable device) and an encryption key (first portable device) in FIG. Also, the control unit 202 extracts the number of registrations included in the response signal, and increases the number of registrations by “1”. As a result, the registration count is “2”. The control unit 202 stores the increased number of registrations in the storage unit 210.

  Following this, the control unit 202 acquires the order ID, group ID, and number of registrations stored in the storage unit 210. The control unit 202 causes the LF transmission unit 204 to transmit a write instruction signal including these.

  The control unit 102 of the first portable device 10 a receives a write instruction signal via the LF receiving unit 106. The control unit 102 stores the order ID, group ID, and number of registrations included in the write instruction signal in the storage unit 110. Here, since the group ID to be stored is the same as the group ID stored in advance, the group ID is not changed. Therefore, it can be said that the group ID previously assigned to the first portable device 10a is used between the first portable device 10a and the second vehicle-mounted device 20b. The order ID is the same as the group ID. On the other hand, since the number of registrations to be stored is “1” larger than the number of registrations stored in advance, it can be said that the increased number of registrations is registered in the storage unit 110. After the completion of these processes, the control unit 102 transmits a response signal to the second vehicle-mounted device 20b via the UHF transmission unit 104.

(4) Registration process between the second portable device 10b and the second vehicle-mounted device 20b Between the second portable device 10b and the second vehicle-mounted device 20b, as between the second portable device 10b and the first vehicle-mounted device 20a. Registration processing is executed. The control unit 202 of the second vehicle-mounted device 20b starts a registration process and transmits a portable device search signal from the LF transmission unit 204. The control unit 102 of the second portable device 10b receives the portable device search signal via the LF reception unit 106. The control unit 102 extracts the order ID and group ID stored in the storage unit 110, and generates a response signal including the order ID and group ID as shown in FIG. Again, the order ID is set to “1”. The group ID is the same as the group ID in the first portable device 10a. The control unit 102 transmits a response signal to the second vehicle-mounted device 20b via the UHF transmission unit 104.

  The control unit 202 of the second vehicle-mounted device 20b receives the response signal via the UHF receiving unit 200. Since the control unit 202 has already stored the group ID in the storage unit 210, the control unit 202 discards the group ID included in the response signal. In addition, the control unit 202 confirms that the order ID “1” is already stored in the storage unit 210. Therefore, the control unit 202 changes the order ID “1” included in the response signal to “2” and stores the order ID “2” in the storage unit 210. Following this, the control unit 202 causes the LF transmission unit 204 to transmit an information request signal.

  The control unit 102 of the second portable device 10b receives the information request signal via the LF receiving unit 106. In addition, the control unit 102 extracts the registration count “1” stored in the storage unit 110. The control unit 102 transmits a response signal including the mobile ID, the encryption key, and the number of registrations to the second vehicle-mounted device 20b via the UHF transmission unit 104.

  The control unit 202 of the second vehicle-mounted device 20b receives the response signal via the UHF receiving unit 200. The control unit 102 stores the portable ID and encryption key included in the response signal in the control unit 202. The portable ID and encryption key are shown as a portable ID (second portable device) and an encryption key (second portable device) in FIG. Also, the control unit 202 extracts the number of registrations included in the response signal, and increases the number of registrations by “1”. As a result, the registration count is “2”. The control unit 202 stores the increased number of registrations in the storage unit 210. As shown in FIG. 3, the combination of the portable ID, encryption key, order ID, and registration count for the first portable device 10a, and the combination of the portable ID, encryption key, order ID, and registration count for the second portable device 10b. Are stored separately.

  Following this, the control unit 202 acquires the order ID, group ID, and number of registrations stored in the storage unit 210. The control unit 202 causes the LF transmission unit 204 to transmit a write instruction signal including these.

  The control unit 102 of the second portable device 10b receives the write instruction signal via the LF reception unit 106. The control unit 102 stores the order ID, group ID, and number of registrations included in the write instruction signal in the storage unit 110. As a result, the group ID previously assigned to the first portable device 10a is used among the first portable device 10a, the second portable device 10b, the first onboard device 20a, and the second onboard device 20b. The increased number of registrations is also registered in the storage unit 110. After the completion of these processes, the control unit 102 transmits a response signal to the second vehicle-mounted device 20b via the UHF transmission unit 104.

  The operation of the vehicular wireless communication system 1000 configured as described above will be described. FIG. 8 is a sequence diagram showing a registration procedure by the vehicular wireless communication system 1000. The first vehicle-mounted device 20a transmits a portable device search signal for searching for the first portable device 10a (step S10). The first portable device 10a transmits a response signal (step S12). The first vehicle-mounted device 20a registers the group ID included in the response signal (step S14). The first vehicle-mounted device 20a transmits an information request signal (step S16). The first portable device 10a transmits a response signal (step S18). The first vehicle-mounted device 20a stores information included in the response signal (step S20). The first vehicle-mounted device 20a transmits a write instruction signal (step S22). The first portable device 10a transmits a response signal (step S24). The first portable device 10a stores information included in the write instruction signal (step S26).

  The first vehicle-mounted device 20a transmits a portable device search signal for searching for the second portable device 10b (step S28). The second portable device 10b transmits a response signal (step S30). The first vehicle-mounted device 20a transmits an information request signal (step S32). The second portable device 10b transmits a response signal (step S34). The first vehicle-mounted device 20a stores information included in the response signal (step S36). The first vehicle-mounted device 20a transmits a write instruction signal (step S38). The second portable device 10b transmits a response signal (step S40). The second portable device 10b stores the information included in the write instruction signal (step S42).

  The second vehicle-mounted device 20b transmits a portable device search signal for searching for the first portable device 10a (step S44). The first portable device 10a transmits a response signal (step S46). The second vehicle-mounted device 20b registers the group ID included in the response signal (step S48). The second on-vehicle device 20b transmits an information request signal (step S50). The first portable device 10a transmits a response signal (step S52). The second vehicle-mounted device 20b stores information included in the response signal (step S54). The second vehicle-mounted device 20b transmits a write instruction signal (step S56). The first portable device 10a transmits a response signal (step S58). The first portable device 10a stores information included in the write instruction signal (step S60).

  The second vehicle-mounted device 20b transmits a portable device search signal for searching for the second portable device 10b (step S62). The second portable device 10b transmits a response signal (step S64). The second vehicle-mounted device 20b transmits an information request signal (step S66). The second portable device 10b transmits a response signal (step S68). The second vehicle-mounted device 20b stores information included in the response signal (step S70). The second vehicle-mounted device 20b transmits a write instruction signal (step S72). The second portable device 10b transmits a response signal (step S74). The second portable device 10b stores information included in the write instruction signal (step S76).

  According to the present embodiment, since the group ID is registered from the first portable device to the first on-vehicle device and the second on-vehicle device, the group ID is set in the first on-vehicle device, the second on-vehicle device, and the first portable device. Can be shared. Moreover, since group ID is shared by the 1st onboard equipment, the 2nd onboard equipment, and the 1st portable machine, even if it is one portable machine, it can communicate with several onboard equipment. Since even a single portable device can communicate with a plurality of on-vehicle devices, it is not necessary to carry a plurality of portable devices. Further, since it is not necessary to carry a plurality of portable devices, the convenience for the user can be improved.

  Moreover, since the frequency | count of registration is increased according to the number of onboard equipment which registered the 1st portable machine, an onboard equipment can be identified in a 1st portable machine. Moreover, since the 1st onboard equipment which registered group ID makes a 2nd portable machine register group ID, it can make a 2nd portable machine use the same group ID. In addition, since the group ID is registered in place of another group ID stored in advance in the second portable device, the same group ID can be used by the second portable device. Moreover, since the frequency | count of registration is increased according to the number of the onboard equipment which registered the 2nd portable machine, an onboard equipment can be identified in a 2nd portable machine.

  Further, since the vehicle-mounted device matches the value of the group ID with the portable device, even a single portable device can communicate with a plurality of vehicle-mounted devices. Moreover, since ECUID which has a different value for every vehicle-mounted device differs from group ID, communication can be performed irrespective of ECUIID. Further, since the group ID has a value that means unregistered, the unregistered state can be changed to the registered state. In addition, since the second portable device matches the group ID value held with the group ID of the first portable device, the first portable device and the second portable device can share the group ID value. Further, since the portable device holds the group ID value in a rewritable manner, the group ID value can be changed. In addition, since each portable device has an initial value that is different, the portable device can be identified even in the initial value state.

  The outline | summary of 1 aspect of this indication is as follows. A vehicle wireless communication system according to an aspect of the present disclosure can be mounted on a vehicle, and includes an in-vehicle device having an input unit and an output unit that can output at least an unlocking instruction to the vehicle, and the in-vehicle device and the wireless communication And a portable device having an operation unit. The portable device holds the first value of the first identification information and the first value of the second identification information, and when the operation unit receives a predetermined operation, the portable device sets the first value of the first identification information. The output unit of the vehicle-mounted device that has received the first value of the first identification information is transmitted to the vehicle based on the first value of the first identification information. The unlocking instruction is output, and the vehicle-mounted device holds at least the second value of the second identification information. When the input unit receives a predetermined input, the on-vehicle device has at least the second value of the second identification information. The portable device that transmits the signal 2 to the portable device using wireless communication and receives the second value of the second identification information is based on the first value and the second value of the second identification information. The wireless communication is used to transmit the third signal, and the output unit of the vehicle-mounted device that receives the third signal outputs an unlocking instruction to the vehicle based on the third signal. In the vehicular wireless communication system, at least the first identification information has a different value for each portable device, the first identification information and the second identification information are different from each other, and the portable device is connected to the vehicle-mounted device. The vehicle-mounted device that transmits the fourth signal having the first value of the identification information and receives the fourth signal sets the second identification information held to the first value.

  According to this aspect, since the vehicle-mounted device matches the value of the second identification information with the portable device, even a single portable device can communicate with a plurality of vehicle-mounted devices.

  In the vehicular wireless communication system, the vehicle-mounted device may hold third identification information having a different value for each vehicle-mounted device, and the third identification information may be different from the second identification information. In this case, since the third identification information having a different value for each individual vehicle-mounted device is different from the second identification information, communication can be executed regardless of the third identification information.

  In the vehicular wireless communication system, the second value of the second identification information may mean unregistered. In this case, since the second value of the second identification information means unregistered, the unregistered state can be changed to the registered state.

  The vehicle wireless communication system may further include a second portable device capable of wireless communication with the vehicle-mounted device, with the portable device as the first portable device. When there is a predetermined input in the on-vehicle device, the on-vehicle device transmits a fifth signal having the first value of the second identification information held to the second portable device, and the first value of the second identification information. The second portable device that has received may use the value of the second identification information held as the first value. In this case, since the value of the 2nd identification information hold | maintained is made into the 1st value, the 2nd portable machine can make the value of 2nd identification information common in a 1st portable machine and a 2nd portable machine.

  In the vehicular wireless communication system, the portable device may hold the value of the second identification information in a rewritable manner. In this case, since the value of the second identification information is rewritable, the value of the second identification information can be changed.

  In the vehicular wireless communication system, the value of the second identification information held by the portable device may have an initial value. The initial value may be a value different for each portable device. In this case, since each portable device has a different initial value, the portable device can be identified even in the initial value state.

  Another aspect of the present disclosure is an identification information registration method. This method can be mounted on a vehicle, has an input unit, an on-vehicle device having an output unit capable of outputting at least an unlocking instruction to the vehicle, and a portable device that can communicate with the on-vehicle device wirelessly and has an operation unit. And have a machine. The portable device holds the first value of the first identification information and the first value of the second identification information, and when the operation unit receives a predetermined operation, the portable device sets the first value of the first identification information. The output unit of the vehicle-mounted device that has received the first value of the first identification information is transmitted to the vehicle based on the first value of the first identification information. The unlocking instruction is output, and the vehicle-mounted device holds at least the second value of the second identification information. When the input unit receives a predetermined input, the on-vehicle device has at least the second value of the second identification information. The portable device that transmits the signal 2 to the portable device using wireless communication and receives the second value of the second identification information is based on the first value and the second value of the second identification information. The wireless communication is used to transmit the third signal, and the output unit of the vehicle-mounted device that has received the third signal outputs an unlocking instruction to the vehicle based on the third signal, At least the first identification information has a different value for each individual portable device, and the first identification information and the second identification information are different from each other, and is an identification information registration method usable in a vehicle wireless communication system, The portable device transmits the fourth signal having the first value of the second identification information to the vehicle-mounted device, and the vehicle-mounted device that has received the fourth signal uses the second identification information held as the first value. .

  According to this aspect, since the vehicle-mounted device matches the value of the second identification information with the portable device, even a single portable device can communicate with a plurality of vehicle-mounted devices.

  In the identification information registration method, the vehicle-mounted device may hold third identification information having a different value for each vehicle-mounted device, and the third identification information may be different from the second identification information. In this case, since the third identification information having a different value for each individual vehicle-mounted device is different from the second identification information, communication can be executed regardless of the third identification information.

  In the identification information registration method, the second value of the second identification information may mean unregistered. In this case, since the second value of the second identification information means unregistered, the unregistered state can be changed to the registered state.

  It is an identification information registration method, Comprising: You may have further the 2nd portable machine which can be communicated by radio | wireless with an onboard equipment by using a portable machine as a 1st portable machine. When there is a predetermined input in the on-vehicle device, the on-vehicle device transmits a fifth signal having the first value of the second identification information held to the second portable device, and the first value of the second identification information. The second portable device that has received may use the value of the second identification information held as the first value. In this case, since the value of the 2nd identification information hold | maintained is made into the 1st value, the 2nd portable machine can make 2nd identification information common in a 1st portable machine and a 2nd portable machine.

  In the identification information registration method, the portable device may hold the value of the second identification information in a rewritable manner. In this case, since the value of the second identification information is rewritable, the value of the second identification information can be changed.

  In the identification information registration method, the value of the second identification information held by the portable device may have an initial value. The initial value may be a value different for each portable device. In this case, since each portable device has a different initial value, the portable device can be identified even in the initial value state.

  The present disclosure has been described based on the embodiments. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to the combination of each of those components, and such modifications are also within the scope of the present disclosure.

  In the embodiment of the present disclosure, the first vehicle-mounted device 20a and the second vehicle-mounted device 20b can communicate with the first portable device 10a. However, the present invention is not limited to this. For example, the first portable device 10a may communicate only with the second on-vehicle device 20b registered last, and prohibit communication with the first on-vehicle device 20a. Specifically, in smart communication, the first portable device 10a rotates the ciphertext rightward by the number of registrations, and the vehicle-mounted device 20 rotates the ciphertext leftward by the number of registrations. Since the second on-vehicle device 20b registered last returns to the original ciphertext, communication is possible. The first vehicle-mounted device 20a registered before that time does not return to the original ciphertext, so communication is not possible. Communication may be performed when the registration count is transmitted during communication and the registration count matches between the portable device 10 and the vehicle-mounted device 20. According to this modification, the flexibility of communication can be improved.

  DESCRIPTION OF SYMBOLS 10 portable machine, 20 vehicle equipment, 50 vehicle, 52 ECU, 54 door lock mechanism, 100 operation part, 102 control part, 104 UHF transmission part, 106 LF reception part, 110 memory | storage part, 200 UHF reception part, 202 control part, 204 LF transmission unit, 210 storage unit, 1000 wireless communication system for vehicle.

Claims (12)

An on-vehicle device that can be mounted on a vehicle and has an input unit and an output unit that can output at least an unlocking instruction to the vehicle;
A portable device capable of wireless communication with the in-vehicle device and having an operation unit;
Have
The portable device holds the first value of the first identification information and the first value of the second identification information, and when the operation unit receives a predetermined operation, the portable device stores the first identification information The first signal having the first value is transmitted to the vehicle-mounted device using wireless communication, and the output unit of the vehicle-mounted device that has received the first value of the first identification information includes the first identification. Outputting an unlocking instruction to the vehicle based on the first value of the information;
The vehicle-mounted device holds at least a second value of the second identification information, and when the input unit receives a predetermined input, at least a second signal having the second value of the second identification information. The portable device that transmits to the portable device using wireless communication and receives the second value of the second identification information is based on the first value and the second value of the second identification information. The third signal is transmitted to the vehicle-mounted device using wireless communication, and the output unit of the vehicle-mounted device that receives the third signal unlocks the vehicle based on the third signal. A vehicle wireless communication system that outputs
At least the first identification information has a different value for each individual portable device, the first identification information and the second identification information are different from each other,
The portable device transmits a fourth signal having the first value of the second identification information to the vehicle-mounted device, and the vehicle-mounted device that has received the fourth signal stores the second identification information held therein. To the first value,
Wireless communication system for vehicles. The vehicle radio communication system according to claim 1,
The vehicle-mounted device holds third identification information having a value different for each individual vehicle-mounted device, and the third identification information is different from the second identification information.
Wireless communication system for vehicles. The vehicle radio communication system according to claim 1 or 2,
The second value of the second identification information means unregistered;
Wireless communication system for vehicles. The vehicle wireless communication system according to any one of claims 1 to 3,
The portable device as a first portable device,
A second portable device capable of wireless communication with the vehicle-mounted device;
When there is a predetermined input in the on-vehicle device, the on-vehicle device transmits a fifth signal having the first value of the second identification information held to the second portable device, and the second The second portable device that has received the first value of the identification information sets the value of the second identification information held as the first value.
Wireless communication system for vehicles. The vehicle wireless communication system according to any one of claims 1 to 4,
The portable device holds the value of the second identification information in a rewritable manner;
Wireless communication system for vehicles. The vehicle radio communication system according to any one of claims 1 to 5,
The value of the second identification information held by the portable device has an initial value,
The initial value is a value that is different for each individual portable device.
Wireless communication system for vehicles. An on-vehicle device that can be mounted on a vehicle and has an input unit and an output unit that can output at least an unlocking instruction to the vehicle;
A portable device capable of wireless communication with the in-vehicle device and having an operation unit;
Have
The portable device holds the first value of the first identification information and the first value of the second identification information, and when the operation unit receives a predetermined operation, the portable device stores the first identification information The first signal having the first value is transmitted to the vehicle-mounted device using wireless communication, and the output unit of the vehicle-mounted device that has received the first value of the first identification information includes the first identification. Outputting an unlocking instruction to the vehicle based on the first value of the information;
The vehicle-mounted device holds at least a second value of the second identification information, and when the input unit receives a predetermined input, at least a second signal having the second value of the second identification information. The portable device that transmits to the portable device using wireless communication and receives the second value of the second identification information is based on the first value and the second value of the second identification information. The third signal is transmitted to the vehicle-mounted device using wireless communication, and the output unit of the vehicle-mounted device that receives the third signal unlocks the vehicle based on the third signal. Is output,
At least the first identification information has a different value for each individual portable device, and the first identification information and the second identification information are different from each other in an identification information registration method usable in a vehicle wireless communication system. There,
The portable device transmits a fourth signal having the first value of the second identification information to the vehicle-mounted device, and the vehicle-mounted device that has received the fourth signal stores the second identification information held therein. To the first value,
Identification information registration method. The identification information registration method according to claim 7,
The vehicle-mounted device holds third identification information having a value different for each individual vehicle-mounted device, and the third identification information is different from the second identification information.
Identification information registration method. The identification information registration method according to claim 7 or 8,
The second value of the second identification information means unregistered;
Identification information registration method. The identification information registration method according to any one of claims 7 to 9,
The portable device as a first portable device,
A second portable device capable of wireless communication with the vehicle-mounted device;
When there is a predetermined input in the on-vehicle device, the on-vehicle device transmits a fifth signal having the first value of the second identification information held to the second portable device, and the second The second portable device that has received the first value of the identification information sets the value of the second identification information held as the first value.
Identification information registration method. The identification information registration method according to any one of claims 7 to 10,
The portable device holds the value of the second identification information in a rewritable manner;
Identification information registration method. The identification information registration method according to any one of claims 7 to 11,
The value of the second identification information held by the portable device has an initial value,
The initial value is a value that is different for each individual portable device.
Identification information registration method.

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