Communication control system and vehicle-exterior antenna device

Abstract

To provide a communication control system capable of performing authentication in a short time.SOLUTION: A communication control system 1 includes a communication unit 20 that performs NFC communication with a key medium 30 associated with a vehicle key unit 2D, and a control unit 10 that controls an operation of the communication unit 20. The control unit 10 has a first storage unit 11 that stores a unique ID of the key medium 30. The communication unit 20 has a second storage unit 21 that stores the unique ID stored in the first storage unit 11 as a registered unique ID, a search unit 22 that, when performing NFC communication, preferentially searches for a unique ID that matches the registered unique ID stored in the second storage unit 21, and a notification unit 23 that, when a unique ID that matches the registered unique ID is found, notifies the control unit 10 of the found unique ID.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a communication control system for performing NFC communication and an exterior antenna device for a vehicle. [Background technology]

[0002] In recent years, technologies have been used to control vehicle key units using electronic keys via key media such as card keys or mobile devices. Examples of such electronic key technologies include those described in Patent Documents 1 and 2, the sources of which are listed below.

[0003] Patent Document 1 describes a digital key system for vehicles. This digital key system includes a reader that communicates with the digital key via short-range wireless communication, and a controller that executes a preset function of the vehicle if communication with the digital key via the reader is successful. The controller switches the function it executes depending on whether communication with the digital key is successful.

[0004] Patent Document 2 describes an authentication device that communicates with a key device and authenticates the key device using digital data. This authentication device is configured to identify the unique ID of the key device through communication with the key device and determine the authentication method based on this unique ID. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-113565 [Patent Document 2] Japanese Patent Application Publication No. 2023-178671 Summary of the Invention [Problem to be solved by the invention]

[0006] The digital key system described in Patent Document 1 is configured to switch the function to be executed depending on the success or failure of communication with the digital key. Furthermore, the authentication device described in Patent Document 2 is configured to determine the authentication method based on the communication result with the key device. Therefore, in the digital key system described in Patent Document 1 and the authentication device described in Patent Document 2, when multiple card keys are swiped, for example, communication with each card key is required, and it takes time to start communication with the target card. Furthermore, since communication is performed with each of the multiple cards, power consumption increases. Furthermore, since power is supplied for a long time until communication is completed, the lifespan of the constituent components (electronic components) is shortened.

[0007] There is a demand for a communication control system and an exterior antenna device that can perform authentication in a short time. [Means for solving the problem]

[0008] A characteristic configuration of the communication control system according to the present invention includes a communication unit that performs NFC communication with a key medium associated with a vehicle key unit, and a control unit that controls the operation of the communication unit. before The communication unit A storage unit for storing the unique ID of the key medium When the NFC communication is performed, Note The above-mentioned stored in the memory solid Matches with existing ID solid Yes ID Search a search unit for searching; stored in the storage unit The aforementioned solid When the unique ID that matches the unique ID is found, before and a notification unit that notifies the control unit.

[0009] With this characteristic configuration, the unique ID of the key medium can be recognized by the communication unit, and can then be used as information for determining when to switch functions. Note stored in memory solidBy communicating only with key media having a unique ID that matches the unique ID, the communication time in the communication unit can be shortened. Furthermore, there is no need to repeatedly activate and deactivate multiple key media in response to instructions from the control unit to search for a specific key medium. This improves responsiveness and enables authentication to be performed in a short time. Furthermore, because the communication time in the communication unit is shortened, the power supply to the electronic components that make up the communication unit is reduced, extending its lifespan compared to when the power supply to the electronic components is not reduced.

[0010] Furthermore, a characteristic configuration of the exterior antenna device according to the present invention includes a communication unit that performs NFC communication with a key medium associated with a vehicle key unit, the communication unit comprising: A storage unit for storing the unique ID of the key medium When the NFC communication is performed, Note The above-mentioned stored in the memory solid Matches with existing ID solid Yes ID Search a search unit for searching; stored in the storage unit The aforementioned solid When the unique ID that matches the unique ID is found, before and a notification unit that notifies a control unit provided in the vehicle.

[0011] Even with this characteristic configuration, as with the above-mentioned communication control system, the unique ID of the key medium can be recognized by the communication unit, and can then be used as information for determining when switching functions. Note stored in memory solid By communicating only with key media having a unique ID that matches the valid ID, the communication time in the communication unit can be shortened. Furthermore, there is no need to repeatedly activate and deactivate multiple key media in response to instructions from the control unit to search for a specific key medium. This improves responsiveness and enables authentication to be performed in a short time. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram showing a vehicle in which a communication control system is provided; [Figure 2] FIG. 1 is a block diagram showing a configuration of a communication control system. [Figure 3] FIG. 10 is a diagram illustrating processing in a communication control system. [Figure 4] FIG. 10 is a diagram illustrating processing in a communication control system. [Figure 5] 10 is a flowchart showing a process in a communication unit. [Figure 6] 10 is a flowchart showing a process in a communication unit. DETAILED DESCRIPTION OF THE INVENTION

[0013] The communication control system according to the present invention is configured to quickly authenticate a key medium associated with a vehicle key unit. The following describes the communication control system 1 according to this embodiment. However, the communication control system 1 is not limited to the following embodiment, and various modifications are possible within the scope of the gist of the system.

[0014] FIG. 1 is a diagram showing a vehicle 2 in which a communication control system 1 is installed. FIG. 2 is a block diagram showing a schematic configuration of the communication control system 1. As shown in FIGS. 1 and 2, the communication control system 1 is configured to include a control unit 10 and a communication unit 20. In this embodiment, the control unit 10 is provided in a vehicle interior 2A. The communication unit 20 is provided in a door handle 2C of a driver's door 2B.

[0015] As shown in FIG. 2, the control unit 10 includes a first storage unit 11 (An example of a "control unit side memory unit") The communication unit 20 includes a second storage unit 21. (An example of a "storage unit") The key medium 30 has a search unit 22 and a notification unit 23. Each of these functional units is constructed of hardware, software, or both, with a CPU as its core component, in order to perform processing related to authentication of the key medium 30.

[0016] The communication unit 20 communicates via near-field communication (NFC) with a key medium 30 associated with a key unit 2D of the vehicle 2. The key unit 2D of the vehicle 2 is installed between the door 2B and the vehicle body of the vehicle 2. The key unit 2D can be switched between an unlocked state and a locked state. When the key unit 2D is in the unlocked state, the door 2B can be opened, and when the key unit 2D is in the locked state, the door 2B cannot be opened. The key medium 30 associated with the key unit 2D corresponds to a medium storing an electronic key that can switch the key unit 2D from one of the locked and unlocked states to the other. Specifically, it corresponds to a card key. NFC communication is wireless communication performed over a short distance (several centimeters) using a frequency of 13.56 MHz. Therefore, the communication unit 20 communicates wirelessly over a short distance (a few centimeters) using a frequency of 13.56 MHz with a card key that stores an electronic key that can switch the key unit 2D, which is installed across the door 2B and body of the vehicle 2, from one of a locked state to an unlocked state to the other.

[0017] The control unit 10 controls the operation of the communication unit 20. The control unit 10 and the communication unit 20 are provided so that they can communicate with each other, for example, via CAN (Controller Area Network) communication or LIN (Local Interconnect Network) communication. Of course, the control unit 10 and the communication unit 20 can be provided using a communication format other than CAN communication or LIN communication. The control unit 10 corresponds to a higher-level system that issues operation instructions to the communication unit 20. Note that the control unit 10 and the communication unit 20 each have a communication control unit for communication, but these are omitted in FIG. 2 .

[0018] The first storage unit 11 stores the unique ID of the key medium 30. The unique ID of the key medium 30 is assigned (set) to each key medium 30 associated with the key unit 2D of the vehicle 2 in which the control unit 10 is installed, and is a unique ID (unique, specific ID) that can identify the key medium 30. This unique ID does not include electronic keys that can switch the key unit 2D from one of a locked state and an unlocked state to the other. The first storage unit 11 may store the unique ID when the control unit 10 and key unit 2D are installed in the vehicle 2.

[0019] The second storage unit 21 includes: The unique ID of the key medium 30 is stored. In this embodiment, the unique ID of the key medium is Unique ID stored in the first storage unit 11 In the following, for ease of understanding, the unique ID stored in the first storage unit 11 is Registered unique ID and It is also called The unique ID stored in the first storage unit 11 teeth As described above, the unique ID stored in the first storage unit 11 is a unique ID that can identify the key medium 30 associated with the key unit 2D of the vehicle 2 in which the control unit 10 is installed. The contents stored in the second storage unit 21 are managed by the control unit 10 (knowledged by the control unit 10), and if the unique ID stored in the first storage unit 11 is not stored in the second storage unit 21, the control unit 10 instructs the second storage unit 21 to store the unique ID stored in the first storage unit 11. The unique ID stored in this way is treated as a registered unique ID.

[0020] When performing NFC communication, the search unit 22 searches for the Unique ID ( Registered Unique ID ) The control unit 10 searches for a unique ID that matches the key unit 2D of the vehicle 2 with priority. "When performing NFC communication" means when a key medium 30 is brought close to the communication unit 20. In this case, the control unit 10 searches for a unique ID stored in the second storage unit 21 to determine whether the key medium 30 brought close is the key medium 30 associated with the key unit 2D of the vehicle 2. Unique ID ( Registered Unique ID )The search unit 22 searches for a unique ID that matches the unique ID. Since the unique ID that can identify the key medium 30 associated with the key unit 2D of the vehicle 2 is stored in advance in the second storage unit 21, the search unit 22 does not need to inquire of the control unit 10 about the unique ID to be searched for. Therefore, the time required for the search by the search unit 22 can be shortened compared to a system that requires inquiring of the control unit 10. The search result by the search unit 22 is transmitted to the notification unit 23.

[0021] The notification unit 23 The unique ID ( Registered Unique ID ) If a unique ID that matches the unique ID is found, the search unit 22 notifies the control unit 10 of the unique ID that has been found. As described above, the search result of the search unit 22 is transmitted to the notification unit 23. The search result is stored in the second storage unit 21. Unique ID ( Registered Unique ID ) If the search result indicates that a key medium 30 having a unique ID that matches the unique ID has been found, the notification unit 23 notifies the control unit 10 of the found unique ID. Unique ID ( Registered Unique ID ) Alternatively, the search unit 22 may be configured to transmit the unique ID stored in the second storage unit 21 only when the key medium 30 having the unique ID that matches the unique ID is searched for. Unique ID ( Registered Unique ID ) In any case, the notification unit 23 may be configured to transmit the unique ID stored in the second storage unit 21 by the search unit 22 even if the key medium 30 having the unique ID matching the unique ID is not found. Unique ID ( Registered Unique ID ) When a key medium 30 having a unique ID that matches the unique ID is found, the notification unit 23 notifies the control unit 10 of the found unique ID. The search unit 22 searches for the unique ID ( Registered Unique ID ) If no unique ID matching the was found, Unique ID ( Registered Unique ID ) The control unit 10 is notified of this.

[0022] This allows the communication control system 1 to quickly authenticate the key medium 30. Therefore, the control unit 10 can instruct the key unit 2D to switch the key unit 2D from one of the locked and unlocked states to the other.

[0023] Here, multiple key media 30 may be associated with one key unit 2D. In other words, multiple people may each have a key media 30 that can switch the key unit 2D of a single vehicle 2 from one of the locked state and the unlocked state to the other. The unique IDs of each of these multiple key media 30 are different from each other. In this case, multiple unique IDs are stored in the first storage unit 11, and multiple unique IDs are stored in the second storage unit 21. Unique ID ( Registered Unique ID ) is stored.

[0024] In this case, the search unit 22 Unique ID ( Registered Unique ID ) The key medium 30 is selected based on communication information including at least one of the number of communications with the key medium 30 and the communication history. Unique ID ( Registered Unique ID ) Specifically, the search unit 22 searches for a unique ID that matches a plurality of Unique ID ( Registered Unique ID ) Among them, the number of communications with key media 30 is high Unique ID ( Registered Unique ID ) In order, Unique ID ( Registered Unique ID ) Search for unique IDs that match or multiple Unique ID ( Registered Unique ID ) Among them, the time from the current time to the time of communication with the key medium 30 is shortest. Unique ID ( Registered Unique ID ) It is preferable to search for a unique ID that matches the ID of the vehicle 2. This makes it possible to quickly search for a key medium 30 owned by a person who frequently uses the vehicle 2 or a key medium 30 owned by a person who recently used the vehicle 2. This allows the communication control system 1 to authenticate the key medium 30 in a short time.

[0025] Here, it is assumed that the key medium 30 that switches the key unit 2D from one locked state to the other unlocked state may not be a card key but may be a mobile terminal. When a mobile terminal is used as the key medium 30, a random ID that is set (generated) each time NFC communication is performed is used in place of a unique ID in communication between the communication unit 20 and the mobile terminal. The use of such random IDs is well known in NFC communication, so a description thereof will be omitted.

[0026] Therefore, if the key medium 30 does not have a unique ID, the search unit 22 requests the key medium 30 to notify the communication unit 20 of its unique ID and determines whether the unique ID is a random ID based on a portion of the reception result in response to the request. The search unit 22 requests key media 30 present within the magnetic field, i.e., key media 30 present within a range where the communication unit 20 can perform NFC communication (within a range of several centimeters from the communication unit 20), to notify their unique IDs. The portion of the reception result corresponds to a portion of the unique ID sent from the key medium 30 in response to the request from the search unit 22 to notify key media 30 within a range where NFC communication can be performed. Specifically, if the key medium 30 sends, for example, a 10-digit ID, the portion of the reception result corresponds to several digits (e.g., four digits) of the 10-digit ID. These several digits are information indicating a random ID, and the search unit 22 can determine whether the unique ID sent from the key medium 30 is a random ID based on these several digits.

[0027] If the unique ID is a random ID, the notification unit 23 notifies the control unit 10 of the random ID. This allows the communication control system 1 to authenticate the key medium 30 in a short time even if the key medium 30 does not have a unique ID. Therefore, the control unit 10 can instruct the key unit 2D to switch the key unit 2D from one of the locked and unlocked states to the other.

[0028] Furthermore, in this embodiment, the notification unit 23 is configured not to notify the control unit 10 of the unique ID if the unique ID is not a random ID. This prevents unnecessary communication and also prevents the control unit 10 from performing calculations due to such communication. This makes it possible to reduce power consumption in the control unit 10.

[0029] 3 shows the status of communication between the control unit 10 and the communication unit 20. The control unit 10 requests the communication unit 20 to detect an NFC card (here, a card key) (#1). This request is made, for example, at predetermined time intervals or when certain conditions are met, such as when the engine is off and the door is closed. In response to the detection request from the control unit 10, the communication unit 20 performs an NFC card detection operation (#2). In this state, when a card key is held over the communication unit 20, the communication unit 20 determines the communication type of the held card key (#3) (i.e., whether it is Type A, Type B, Type F, etc.).

[0030] When the communication unit 20 determines the communication type of the card key, the search unit 22 searches for the card key stored in the second storage unit 21. Unique ID ( Registered Unique ID ) Search for a unique ID that matches (#4). The unique ID ( Registered Unique ID ) If a unique ID matching the unique ID is found, the card key (unique ID) is activated (#5). Then, the notification unit 23 notifies the control unit 10 of the found unique ID (#6). Thereafter, communication and responses continue between the control unit 10 and the communication unit 20 (#7-#10). At this time, the communication unit 20 also communicates with the card key.

[0031] 4 shows the state of communication between the control unit 10 and the communication unit 20 when the key medium 30 is not a card key. The control unit 10 requests the communication unit 20 to detect an NFC card (here, a card key) (#21). In response to this request, the communication unit 20 responds to the control unit 10 by detecting the NFC card (#22). In response to the detection request from the control unit 10, the communication unit 20 performs an NFC card detection operation (#23). In this state, when a mobile terminal is held over the communication unit 20, the communication unit 20 determines the communication type of the held mobile terminal (#24).

[0032] When communication unit 20 determines the communication type of the portable terminal, search unit 22 searches for a unique ID (#25). If a random ID is detected as a result of searching for the unique ID, notification unit 23 notifies control unit 10 of the searched random ID and activates NFC communication with the portable terminal, after which communication and response continue (omitted in FIG. 4) (#26). On the other hand, if a random ID is not detected, notification unit 23 does not notify control unit 10 (#27).

[0033] Next, the processing in the communication unit 20 will be described using Figure 5. In particular, Figure 5 shows the processing when the communication unit 20 is installed in the door handle 2C. When the key medium 30 is held over the communication unit 20, the communication unit 20 determines the communication type (#100). After determining the communication type, the communication unit 20 starts searching for a unique ID (#101). If there are multiple key media 30 found (#102: Yes) and the unique ID has already been registered in the second storage unit 21 (#103: Yes), or if there are multiple registered card keys (#105: Yes), the communication unit 20 searches for the unique ID that was most recently communicated with. Unique ID ( Registered Unique ID ) (#106). When this unique ID is acquired (#107: Yes), the card key is activated (#108) and this unique ID is notified to the control unit 10 (#109).

[0034] In #105, if the number of registered card keys is not more than one (#105: No), a search is made for registered IDs (#110), and processing continues from #107.

[0035] If a unique ID is not acquired in #107 (#107: No) and an unspecified card key remains (#151: Yes), the unique ID of the next card key is designated (#152). If this unique ID can be acquired (#153: Yes), processing continues from #108. If there are no unspecified card keys remaining in #151 (#151: No) or if a unique ID cannot be acquired in #153 (#153: No), a unique ID is acquired (#111). If the acquired unique ID is a random ID (#112: Yes), the device with the random ID is activated (#113) and this random ID is notified to the control unit 10 (#109). If the acquired unique ID is not a random ID in #112 (#112: No), the process transitions to detection mode without notifying the control unit 10 of the ID (#114).

[0036] In #103, if a unique ID has not already been registered in the second storage unit 21 (#103: No), a unique ID is acquired (#115). If the acquired unique ID is a random ID (#116: Yes), the device with the random ID is activated (#117) and this random ID is notified to the control unit 10 (#109). In #116, if the acquired unique ID is not a random ID (#116: No), an arbitrary card is activated without notifying the control unit 10 of the ID (#118).

[0037] In #102, if the number of searched key media 30 is not multiple (#102: No), the unique ID to be searched is acquired (#119). The unique ID ( Registered Unique ID ) and explored If the unique ID matches (#120: Yes), the card key is activated (#121) and this unique ID is notified to the control unit 10 (#109).

[0038] In #120, Unique ID ( Registered Unique ID ) and explored If it does not match the unique ID (#120: No) and the acquired ID is a random ID (#122: Yes), the device with the random ID is activated (#123) and this random ID is notified to the control unit 10 (#109). If it is not a random ID at #122 (#122: No), the ID is not notified to the control unit 10 and the process moves to detection mode (#124).

[0039] In addition, in #109, after notifying the control unit 10 of the unique ID (a unique ID or a random ID), it is possible to configure the device to perform mutual authentication via NFC communication using a unique authentication key different from the unique ID stored in the key medium 30, and then switch functions (for example, from one of locking and unlocking the door to the other).

[0040] Next, the processing in the communication unit 20 will be described with reference to Figure 6. In particular, Figure 6 shows the processing when the communication unit 20 is installed in the vehicle interior 2A. When the key medium 30 is held over the communication unit 20, the communication unit 20 determines the communication type (#200). After the determination of the communication type is completed, the communication unit 20 starts searching for a unique ID (#201). If multiple key media 30 are found (#202: Yes), the unique ID has been registered in the second storage unit 21 (#203: Yes), and there are multiple registered card keys (#204: Yes), the most recently communicated key medium 30 is searched for (#205: Yes). Unique ID ( Registered Unique ID ) (#205). When this unique ID is acquired (#206: Yes), the card key is activated (#207) and this unique ID is notified to the control unit 10 (#208).

[0041] In #204, if the number of registered card keys is not multiple (#204: No), a search is made for registered IDs (#255), and processing continues from #206.

[0042] If a unique ID is not acquired in #206 (#206: No) and an unspecified card key remains (#251: Yes), the unique ID of the next card key is designated (#252). If this unique ID can be acquired (#253: Yes), processing continues from #207. If there are no unspecified card keys remaining in #251 (#251: No) or if a unique ID cannot be acquired in #253 (#253: No), a unique ID is acquired (#209). If the acquired unique ID is a random ID (#210: Yes), the device with the random ID is activated (#211) and this random ID is notified to the control unit 10 (#208). If the acquired unique ID is not a random ID in #210 (#210: No) and the number of registered card keys has reached the upper limit (#212: Yes), the process transitions to detection mode without notifying the control unit 10 of the ID (#213). If the number of registered card keys is not at the upper limit in #212 (#212: No), an arbitrary card is activated (#214) and the ID is notified to the control unit 10 (#208).

[0043] In #203, if a unique ID has not already been registered in the second storage unit 21 (#203: No), a unique ID is acquired (#215). If the acquired unique ID is a random ID (#216: Yes), the device with the random ID is activated (#217) and this random ID is notified to the control unit 10 (#208). In #216, if the acquired unique ID is not a random ID (#216: No), an arbitrary card is activated (#218) and the ID is notified to the control unit 10 (#208).

[0044] In #202, if the number of searched key media 30 is not multiple (#202: No), the unique ID to be searched is acquired (#219). Unique ID ( Registered Unique ID ) If the unique ID matches (#220: Yes), the card key is activated (#221) and this unique ID is notified to the control unit 10 (#208).

[0045] In #220, Unique ID ( Registered Unique ID ) If the unique ID does not match (#220: No) and the acquired unique ID is a random ID (#222: Yes), the device with the random ID is activated (#223) and this random ID is notified to the control unit 10 (#208). If the acquired unique ID is not a random ID (#222: No) in #222, the unique ID has already been registered (#224: Yes), and the number of registered card keys has reached the upper limit (#225: Yes), the process moves to detection mode without notifying the control unit 10 of the ID (#226). If the unique ID has not already been registered in #224 (#224: No), or if the number of registered card keys has not reached the upper limit in #225 (#225: No), an arbitrary card is activated (#227) and the ID is notified to the control unit 10 (#208).

[0046] In addition, in #208, after notifying the control unit 10 of the unique ID (a unique ID or a random ID), it is possible to configure the device to perform mutual authentication via NFC communication using a unique authentication key different from the unique ID stored in the key medium 30, and then switch functions (for example, from one of locking and unlocking the door to the other).

[0047] The above-described processing is executed in the communication unit 20 of the communication control system 1. Of course, the order of the processing steps shown in Fig. 5 and Fig. 6 can be changed as appropriate, or some of the processing steps can be omitted.

[0048] Other Embodiments Next, other embodiments of the communication control system 1 will be described.

[0049] In the above embodiment, the communication unit 20 is described as being provided in the door handle 2C, but the communication unit 20 may also be provided in a part of the vehicle body, such as a so-called B-pillar of the vehicle 2. In this case, the door handle 2C or the B-pillar on which the communication unit 20 is provided can be used as an exterior antenna device, and the communication control system 1 can be configured to include the communication unit 20 provided in the door handle 2C or the B-pillar and the control unit 10 provided in the vehicle 2. Therefore, the exterior antenna device includes the communication unit 20 that performs NFC communication with the key medium 30 associated with the key unit 2D of the vehicle 2, and this communication unit 20 tree - Unique ID of media 30 Note A second storage unit 21 that stores (An example of a "storage unit") When performing NFC communication, the information stored in the second storage unit 21 is Unique ID ( Registered Unique ID ) A unique ID that matches Search a search unit 22 for searching; The unique ID ( Registered Unique ID ) If a unique ID matching car It is preferable that the device is configured to include a notification section 23 that notifies the control unit 10 provided on both sides 2.

[0050] In the above embodiment, the communication unit 20 is described as performing NFC communication with the key medium 30, but the communication unit 20 may also be configured to perform BLE (Bluetooth (registered trademark) Low Energy) communication or UWB (Ultra-Wide Band) communication with the key medium 30.

[0051] In the above embodiment, the key medium 30 is described as a card key, but the key medium 30 may be a medium other than a card key as long as it is a medium that uses a fixed ID.

[0052] In the above embodiment, the search unit 22 stores a plurality of Unique ID ( Registered Unique ID ) If multiple Unique ID ( Registered Unique ID )The key medium 30 is selected based on communication information including at least one of the number of communications with the key medium 30 and the communication history. Unique ID ( Registered Unique ID ) For example, the second storage unit 21 stores a plurality of unique IDs. Unique ID ( Registered Unique ID ) When the above-mentioned items are stored in the second storage unit 21, the search unit 22 can be configured to search in the order of most recent items stored in the second storage unit 21, or the search unit 22 can be configured to search in the order of oldest items stored in the second storage unit 21.

[0053] In the above embodiment, it has been described that if the unique ID is not a random ID, the notification unit 23 does not notify the control unit 10 of the unique ID. However, the notification unit 23 can also be configured to notify the control unit 10 of the unique ID even if the unique ID is not a random ID.

[0054] [Summary of the above embodiment] The following provides an overview of the communication control system 1 described above.

[0055] (1) The communication control system 1 includes a communication unit 20 that performs NFC communication with a key medium 30 associated with a key unit 2D of a vehicle 2, and a control unit 10 that controls the operation of the communication unit 20. The communication unit 20: A second storage unit 21 (storage unit) that stores the unique ID of the key medium 30 When performing NFC communication, the information stored in the second storage unit 21 is solid Matches with existing ID solid Yes ID Search a search unit 22 for searching; The fixed value stored in the second storage unit 21 If a unique ID matching the valid ID is found, system and a notification unit 23 that notifies the control unit 10.

[0056] According to this configuration, the unique ID of the key medium 30 can be recognized by the communication unit 20 and can be used as a reference for determining whether to switch functions. solidBy communicating only with key media 30 having a unique ID that matches the unique ID, the communication time in the communication unit 20 can be shortened. Furthermore, there is no need to repeatedly activate and deactivate multiple key media 30 in response to instructions from the control unit 10 to search for a specific key media 30. This improves responsiveness and enables authentication to be performed in a short time. Furthermore, because the communication time in the communication unit 20 is shortened, the power supply to the electronic components that make up the communication unit 20 is reduced, thereby extending the lifespan of the electronic components compared to when the power supply to the electronic components is not reduced.

[0057] (2) In the communication control system 1 described in (1), the search unit 22 stores a plurality of solid If multiple IDs are stored, solid The ID is selected based on communication information including at least one of the number of communications with the key medium 30 and the communication history. solid It is preferable to search for a unique ID that matches the valid ID.

[0058] According to this configuration, the unique ID is searched for based on the usage history, so it is easy to search for the unique ID of the key medium 30 owned by a user who frequently uses the vehicle 2. Therefore, it is possible to shorten the communication time in the communication unit 20.

[0059] (3) In the communication control system 1 described in (1) or (2), the unique ID includes a unique ID set for each key medium 30 and a random ID generated each time NFC communication is performed, and if the key medium 30 does not have a unique unique ID, the search unit 22 requests the key medium 30 to notify the communication unit 20 of the unique ID of the key medium 30, and determines from a part of the received result whether the unique ID is a random ID, and if the unique ID is a random ID, the notification unit 23 preferably notifies the control unit 10 of the random ID.

[0060] According to this configuration, even if the key medium 30 does not have a unique ID, communication and authentication can be performed using a mobile terminal having a random ID, thereby improving convenience.

[0061] (4) In the communication control system 1 described in (3), it is preferable that the notification unit 23 does not notify the control unit 10 of the unique ID if the unique ID is not a random ID.

[0062] This configuration can prevent unnecessary communication between the communication unit 20 and the control unit 10. Therefore, for example, the control unit 10 in a standby state is not woken up, thereby reducing power consumption.

[0063] (5) The exterior antenna device includes a communication unit 20 that performs NFC communication with a key medium 30 associated with a key unit 2D of the vehicle 2, and the communication unit 20 Unique ID of key media 30 When performing NFC communication, the second storage unit 21 stores the solid A unique ID that matches the valid ID Search a search unit 22 for searching; Stored in the second storage unit 21 If a unique ID matching the unique ID is found, car and a notification section 23 for notifying the control units 10 provided on both the sensors 2.

[0064] In this configuration, the unique ID of the key medium 30 can be recognized by the communication unit 20 and can then be used as a basis for determining whether to switch functions. solid By communicating only with key media 30 having a unique ID that matches the valid ID, the communication time in the communication unit 20 can be shortened. Furthermore, there is no need to repeatedly activate and deactivate multiple key media 30 in response to instructions from the control unit 10 to search for a specific key media 30. This improves responsiveness and enables authentication to be performed in a short time. [Industrial Applicability]

[0065] The technology according to the present disclosure can be used in a communication control system that performs NFC communication. [Explanation of symbols]

[0066] 1: communication control system, 2: vehicle, 2D: key unit, 10: control unit, 11: first storage unit (Control unit side memory section) 20: communication unit; 21: second storage unit (Storage part) 22: Search unit, 23: Notification unit, 30: Key medium

Claims

1. a communication unit for performing NFC communication with a key medium associated with the vehicle key unit; a control unit for controlling the operation of the communication unit; the control unit has a first storage unit in which a unique ID of the key medium is stored; The communication unit has a second memory unit that stores the unique ID stored in the first memory unit as a registered unique ID, a search unit that, when performing NFC communication, preferentially searches for a unique ID that matches the registered unique ID stored in the second memory unit, and a notification unit that, when a unique ID that matches the registered unique ID is found, notifies the control unit of the found unique ID.

2. The communication control system described in claim 1, wherein when multiple registered unique IDs are stored in the second memory unit, the search unit searches for a unique ID among the multiple registered unique IDs that matches the registered unique ID selected based on communication information including at least one of the number of communications with the key medium and communication history.

3. The unique ID includes a unique ID set for each key medium and a random ID generated each time the NFC communication is performed, If the key medium does not have the unique ID, the search unit requests the key medium to notify the communication unit of the unique ID of the key medium, and determines whether the unique ID is the random ID from a part of the received result; The communication control system according to claim 1 , wherein, when the unique ID is the random ID, the notification unit notifies the control unit of the random ID.

4. The communication control system according to claim 3 , wherein the notification unit does not notify the control unit of the unique ID if the unique ID is not the random ID.

5. a communication unit for performing NFC communication with a key medium associated with the vehicle key unit; The communication unit is an exterior antenna device having: a second memory unit that stores the unique ID of the key medium stored in a first memory unit provided in the vehicle as a registered unique ID; a search unit that, when performing the NFC communication, preferentially searches for the unique ID that matches the registered unique ID stored in the second memory unit; and a notification unit that, when a unique ID that matches the registered unique ID is found, notifies a control unit provided in the vehicle of the found unique ID.

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