WO2007074544A1

WO2007074544A1 - Wireless communication apparatus, wireless authentication system and wireless authentication method

Info

Publication number: WO2007074544A1
Application number: PCT/JP2006/304173
Authority: WO
Inventors: Yoshiyasu Sato; Katsuhiko Tando
Original assignee: Matsushita Electric Industrial Co., Ltd.
Priority date: 2005-12-27
Filing date: 2006-03-03
Publication date: 2007-07-05
Also published as: JP4709003B2; JP2007180867A

Abstract

A wireless communication apparatus, a wireless authentication system and a wireless authentication method wherein during mobile radio wave transmitting/receiving operations of a mobile telephone apparatus, a wireless authentication part included in the mobile telephone apparatus is controlled such that its wireless authentication operation is halted, thereby preventing any wireless authentication signal from interfering with the mobile communication signals and further reducing the battery consumption on the key side. In the wireless communication apparatus, wireless authentication system and wireless authentication method, while the mobile telephone apparatus (100) is being engaged in telephone or communication in response to a communication status signal inputted from a wireless communication control part (101), a wireless authentication control part (304) halts the transmission of the response signal. When the mobile telephone apparatus (100) terminates the telephone or communication in response to a communication status signal, the wireless authentication control part (304) resumes the transmission of the response signal.

Description

Wireless communication apparatus, wireless authentication system, and wireless authentication method

Technical field

The present invention relates to a wireless communication device, a wireless authentication system, and a wireless authentication method, and more particularly to a wireless communication device, a wireless authentication system, and a wireless authentication method for performing wireless authentication processing between a mobile communication device and a key. .

Background art

Conventionally, there is a device described in Patent Document 1 as a device use restriction system. This device use restriction system has a first transmitter and a first receiver, the first transmitter transmits an identification code signal with a constant strength, and is attached to the target device. A wireless authentication unit having a second receiver and a second transmitter, and when the wireless communication unit and the wireless authentication unit are separated from each other by a certain distance, the wireless authentication unit The wireless communication unit notifies the alarm with sound.

[0003] That is, in the above-mentioned device usage restriction system, if the target device such as a mobile phone is moved away from the owner or the user due to misplacement or theft, the target device itself becomes unusable and the target device cannot be used. It warns with sound that it is more than a certain distance away.

Patent Document 1: Japanese Patent No. 2931276

Disclosure of the invention

Problems to be solved by the invention

[0004] In the conventional device use restriction system, an authentication signal is always transmitted and received between a wireless communication unit (hereinafter referred to as a key) and a portable terminal device. As a radio signal output from the wireless authentication unit of the wireless communication unit, a radio wave having a frequency of about several hundred MHz is currently used from the viewpoint of easy wraparound and propagation loss.

[0005] The above-described authentication process using radio waves is frequently performed at intervals of about several seconds from the viewpoint of preventing theft and misplacement. For this reason, when the wireless authentication unit mounted in the mobile terminal device or on the key transmits a signal, and the mobile phone as the mobile terminal device is carried. There are cases in which the time for transmitting and receiving band communication signals overlaps. In this case, as shown in Fig. 1, the harmonics (2 * fl, 3 * fl, 4 * fl, 5 * fl, n * fl) of the signal frequency fl transmitted from the wireless communication unit are the frequencies used by the mobile phone. The problem of interference with the band occurs.

[0006] That is, the wireless authentication unit of the key, which is the wireless communication unit shown in FIG. 2A, the authentication signal transmitted to the mobile phone and the response signal thereof are constantly transmitted. As shown in FIG. If the response signal transmitted from the authentication unit to the key and the mobile phone operation shown in FIG. 2C are performed simultaneously, the authentication signal and the mobile communication signal interfere with each other inside the mobile phone. For example, if the frequency power used by the wireless authentication unit is about OOMHz, the 5th harmonic will interfere with the 2GHz band of the mobile phone, and if the frequency used by the wireless authentication unit is about 300MHz, The 3rd harmonic interferes with the 800MHz band of the mobile phone.

[0007] An object of the present invention is to control the wireless authentication operation of the wireless authentication unit mounted on the mobile phone to be stopped when the mobile phone transmits / receives mobile radio waves, thereby preventing the wireless authentication signal from interfering with the mobile communication signal. To provide a wireless communication device, a wireless authentication system, and a wireless authentication method that prevent and reduce battery consumption on the key side.

Means for solving the problem

[0008] The wireless communication device of the present invention communicates with the communication device by the first wireless communication and performs wireless authentication with the wireless communication unit by the second wireless communication. A first wireless communication unit that performs the first wireless communication; a second wireless communication unit that performs the second wireless communication; and a communication operation state according to the first wireless communication unit. And a wireless authentication control means for controlling the wireless communication operation of the second wireless communication means.

The invention's effect

[0009] According to the present invention, during the communication by the first wireless communication, the second wireless communication signal related to the mutual authentication is controlled by controlling the communication operation of the second wireless communication related to the mutual authentication. Interference with one wireless communication signal can be prevented.

Brief Description of Drawings

[0010] FIG. 1 is a diagram showing an example of harmonic components of a conventional wireless authentication signal [Figure 2] Timing chart showing the operation of the authentication signal in the conventional key and portable terminal device

FIG. 3 is a diagram showing an overall configuration of a wireless authentication system according to Embodiment 1 of the present invention.

FIG. 4 is a block diagram showing a configuration of the mobile phone according to the first embodiment.

FIG. 5 is a block diagram showing a configuration of a key communication unit according to the first embodiment.

FIG. 6 is a block diagram showing a configuration of a transmission / reception unit in the wireless authentication unit in the mobile phone according to the first embodiment.

[FIG. 7] Form ¹ ~~ Che ¹ ~~ 卜 showing the wireless authentication process executed in the mobile phone according to the first embodiment

FIG. 8 is a timing chart showing operations of the wireless authentication unit of the key communication unit, the wireless authentication unit of the mobile phone, and the wireless communication unit according to the first embodiment.

FIG. 9 is a timing chart showing operations of the wireless authentication unit of the key communication unit, the wireless authentication unit of the mobile phone, and the wireless communication unit according to the first embodiment.

FIG. 10 is a sequence diagram showing an operation corresponding to FIG. 6 of the wireless authentication system according to the first embodiment.

FIG. 11 is a sequence diagram showing an operation corresponding to FIG. 7 of the wireless authentication system according to the first embodiment.

FIG. 12 is a flowchart showing the wireless authentication operation of the mobile phone and the wireless authentication operation of the key communication unit according to the second embodiment of the present invention.

FIG. 13 is a timing chart showing operations of the wireless authentication unit of the key communication unit and the wireless authentication unit of the mobile phone according to the second embodiment.

FIG. 14 is a sequence diagram showing an operation corresponding to FIG. 11 of the wireless authentication system according to the second embodiment.

FIG. 15 is a block diagram showing a configuration of a mobile phone according to Embodiment 3 of the present invention.

FIG. 16 is a diagram illustrating a characteristic example of a filter according to the third embodiment.

FIG. 17 is a diagram illustrating another characteristic example of the filter according to the third embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. [0012] (Embodiment 1)

FIG. 3 is a diagram showing an overall configuration of the wireless authentication system according to the first embodiment to which the present invention is applied. In FIG. 3, the wireless authentication system 10 includes a mobile phone 100 as a wireless communication device with a wireless authentication function, a key communication unit 400 as a wireless communication unit with a wireless authentication function, and a wireless base station as a communication device. 600.

In FIG. 3, a mobile phone 100 includes a radio communication unit 200 that executes mobile communication processing with a radio base station 600 and a radio authentication unit that executes radio authentication processing with a key communication unit 400. With 300.

In FIG. 3, a key communication unit 400 includes a wireless authentication unit 500 that performs wireless authentication processing with the mobile phone 100, an alarm circuit unit 506 that issues an alarm when wireless authentication is not established, and an external output unit 507. And a battery 509 for supplying power to each part in the key communication unit 400.

FIG. 4 is a block diagram showing a configuration of mobile phone 100. In FIG. 4, a cellular phone 100 includes a wireless communication control unit 101, a battery 102, a timer 103, an alarm circuit unit 104, an external output unit 105, an operation input unit 106, a microphone 107, and a wireless communication unit. 200 and a wireless authentication unit 300.

Radio communication control unit 101 controls radio communication unit 200 in accordance with an operation signal input from operation input unit 106 to control a mobile communication process with radio base station 600, thereby enabling a microphone. For example, transmission control of the transmission signal input from the wireless communication unit 107 and reception control of the reception signal input from the wireless communication unit 200 are executed. In addition, the wireless communication control unit 101 controls the operation of the wireless authentication unit 300 by outputting a communication state signal indicating the operation state of the mobile communication to the wireless authentication unit 300, and the use restriction signal input from the wireless authentication unit 300 or The usage restriction operation or usage restriction release operation of the mobile communication function is controlled by the usage restriction release signal.

The battery 102 is composed of a rechargeable battery or the like, and supplies power to each part in the mobile phone 100. The timer 103 measures the time for setting each operation timing of the portable communication control in the wireless communication control unit 101 and the wireless authentication control in the wireless authentication unit 300, and the time is wirelessly connected to the wireless communication control unit 101. Supply to the authentication unit 300.

The alarm circuit unit 104 is connected to the wireless authentication unit 30 when wireless authentication with the key communication unit 400 is not established. This circuit operates in response to an alarm output instruction signal input from 0. When the signal is input, the output means of the external output unit 105 is selected and an alarm is notified to the user by an alarm sound or an alarm display.

[0019] The external output unit 105 includes output means such as a speaker, a vibration unit, a cover part, and the like, and notifies the user of an alarm by an output unit selected by a selection signal input from the alarm circuit unit 104. The operation input unit 106 includes a numeric keypad and various function keys, and outputs an operation signal corresponding to the key operation by the user to the wireless communication control unit 101.

The wireless communication unit 200 includes an antenna 201, a transmission / reception switching unit 202, a transmission unit 203, and a reception unit 204.

The antenna 201 transmits a transmission signal from the transmission unit 203 connected via the transmission / reception switching unit 202 to the radio base station 600, and transmits the signal of the other party's mobile phone power to the radio base station 600. The received signal is provided to the receiving unit 204 via the transmission / reception switching unit 202.

The transmission / reception switching unit 202 switches and connects the transmission unit 203 and the reception unit 204 to the antenna 201. Transmitting section 203 modulates a transmission signal input from radio communication control section 101 and supplies the modulated signal to antenna 201 via transmission / reception switching section 202. Receiving section 204 receives a received signal from antenna 201 via transmission / reception switching section 202, demodulates the received signal, and outputs the demodulated signal to radio communication control section 101.

The wireless authentication unit 300 includes an antenna 301, a transmission / reception unit 302, an authentication ID storage unit 303, a radio authentication control unit 304, a memory 305, a signal level detection unit 306, and a use restriction device 307. Consists of

The antenna 301 transmits a transmission signal related to wireless authentication input from the transmission / reception unit 302 to the key communication unit 400, receives a signal related to wireless authentication from the key communication unit 400, and outputs the signal to the transmission / reception unit 302.

[0025] Transmission / reception section 302 generates a transmission signal obtained by modulating a signal related to radio authentication input from radio authentication control section 304, transmits it from antenna 301, and performs radio communication related to radio authentication from the reception signal input from antenna 301. The signal is demodulated, and the demodulated signal is output to the wireless authentication control unit 304 and the signal level detection unit 306.

[0026] Authentication ID storage unit 303 stores an identification code signal in advance. In this identification code signal Includes a self-identification symbol (ID) that identifies the mobile phone 100 and an identification symbol that identifies the key communication unit 400 corresponding to the mobile phone 100.

The wireless authentication control unit 304 controls the wireless authentication process by the wireless authentication program stored in the memory 305 and controls the operation timing of the wireless authentication process by the time measured supplied from the timer 103. When a search signal related to wireless authentication is input from the transmission / reception unit 302, the wireless authentication control unit 304 compares the search signal with the identification code signal stored in the authentication ID storage unit 303, and the search signal is If it is for itself, a response signal (confirmation code signal) indicating that the search signal has been received is transmitted from the transmitting / receiving unit 302 with a constant strength.

[0028] When the mobile phone 100 is in a call or in communication with the communication state signal input from the wireless communication control unit 101, the wireless authentication control unit 304 stops the transmission of the response signal, and the communication state When the cellular phone 100 is in a call end or communication end by the signal, transmission of the response signal is resumed. Further, the wireless authentication control unit 304 continues the transmission operation of the response signal when the use restriction release signal is input from the use restriction device 303, and when the use restriction signal is input from the use restriction device 307, If the mobile phone 100 is in a call or communicating, the output of the use restriction signal to the wireless communication control unit 101 is stopped, and if the mobile phone 100 has ended the call or communication, the use restriction signal is wireless. Output to the communication control unit 101 is permitted.

[0029] The memory 305 stores a wireless authentication program or the like for controlling the wireless authentication process.

When the authentication signal related to the wireless authentication received by the transmission / reception unit 302 is input, the signal level detection unit 306 detects the reception level of the authentication signal (identification code signal) and outputs it to the use restriction device 307.

[0030] The use restriction device 307 compares the reception level input from the signal level detection unit 306 with a preset threshold, and if the reception level is greater than the threshold, a use restriction release signal for releasing the use restriction. When it is output to the wireless communication control unit 101 and the wireless authentication control unit 304 and the reception level becomes lower than the threshold, if the permission is input from the wireless authentication control unit 304, a use restriction signal for restricting use is wirelessly transmitted. Output to the communication control unit 101.

[0031] Note that the use restriction device 307 uses the use restriction signal or the signal according to the reception level comparison result. Although the case where the use restriction release signal is output to the wireless communication control unit 101 and the wireless authentication control unit 304 has been described, the use restriction release signal is not limited to these signal outputs, for example, depending on the comparison result of the reception level. The wireless communication control unit 101 and the wireless authentication control unit 304 may execute the same processing by outputting or stopping.

Next, the configuration of key communication unit 400 in FIG. 3 will be described with reference to the block diagram shown in FIG.

In FIG. 5, the key communication unit 400 includes a wireless authentication unit 500, an alarm circuit unit 506, an external output unit 507, a memory 508, a battery 509, and a timer 510.

The wireless authentication unit 500 includes an antenna 501, a transmission / reception unit 502, an authentication signal level detection unit 503, a wireless authentication unit control unit 504, and an authentication ID storage unit 505.

Antenna 501 transmits a transmission signal related to wireless authentication input from transmission / reception section 502 to mobile phone 100, receives a signal related to wireless authentication from mobile telephone 100, and outputs it to transmission / reception section 502.

Transmission / reception section 502 generates a transmission signal obtained by modulating a signal related to wireless authentication input from wireless authentication unit control section 504, transmits it from antenna 501, and transmits a signal related to wireless authentication from a reception signal input from antenna 501. The demodulated signal is output to authentication signal level detection section 503 and wireless authentication unit control section 504.

When an authentication signal related to wireless authentication received by transmission / reception section 502 is input, authentication signal level detection section 503 detects the reception level of the authentication signal (identification code signal), and wireless authentication unit control section 504 Output to.

The wireless authentication unit control unit 504 controls the wireless authentication process by the wireless authentication program stored in the memory 508, and controls the operation timing of the wireless authentication process by the time measured supplied from the timer 510. The wireless authentication unit control unit 504 transmits a search signal related to wireless authentication from the transmission / reception unit 502 to the mobile phone 100 with a certain strength, and the transmission / reception unit 502 receives and inputs a response signal to the search signal. And the response signal and the identification code signal stored in the authentication ID storage unit 505 are compared, and if the search signal is for itself, the authentication signal generated from the identification code signal (identification code signal ) Is transmitted from the transmission / reception unit 502 at a constant intensity. [0039] Authentication ID storage section 505 stores an identification code signal in advance. This identification code signal includes a self-identification symbol (ID) that identifies the key communication unit 400 and an identification symbol that identifies the mobile phone 100 corresponding to the key communication unit 400.

[0040] Alarm circuit unit 506 is a circuit that operates in response to an alarm output instruction signal input from wireless authentication unit 500 when wireless authentication with mobile phone 100 is not established. When the signal is input, output means of external output unit 507 is used. Select to notify the user of an alarm by an alarm sound or alarm display.

[0041] The external output unit 507 includes output means such as a speaker, a vibration unit, a cover part, and the like, and notifies the user of an alarm by an output unit selected by a selection signal input from the alarm circuit unit 506.

The memory 508 stores a wireless authentication program or the like for controlling the wireless authentication process.

The battery 509 is composed of a replaceable battery or the like, and supplies power to each part in the key communication unit 400. The timer 510 measures the time for setting the operation timing of wireless authentication control in the wireless authentication unit 500 and supplies the time to the wireless authentication unit 500.

Next, the configuration of transmission / reception section 302 in radio authentication section 300 shown in FIG. 4 will be described with reference to the block diagram shown in FIG. In FIG. 6, the transmission / reception unit 302 includes a variable attenuator (variable ATT) 302a, a transmission / reception switching unit 302b, a transmission unit 302c, and a reception unit 302d.

The variable attenuator 302a is a variable attenuator that attenuates transmission power when transmitting a transmission signal from the antenna 301 and reception power when receiving a reception signal from the antenna 301. The attenuation rate is controlled by wireless authentication control. This is set by a control signal input from the unit 304.

[0045] The transmission / reception switching unit 302b switches and connects the transmission unit 302c and the reception unit 302d to the variable attenuator 302a according to the switching signal input from the wireless authentication control unit 304.

[0046] Transmitting section 302c modulates a signal related to wireless authentication input from wireless authentication control section 304, generates a transmission signal, and outputs it to transmission / reception switching section 302b. The receiving unit 302d demodulates a signal related to wireless authentication from the received signal input from the transmission / reception switching unit 302b, and outputs the signal to the wireless authentication control unit 304. Next, the wireless authentication process executed by the mobile phone 100 will be described with reference to the flowchart shown in FIG.

In FIG. 7, first, the wireless authentication control unit 304 uses the communication function based on the communication state signal input from the wireless communication control unit 101 and the use restriction signal or use restriction release signal input from the use restriction device 307. It is determined whether the force is limited or not (step S101). If it is determined that the usage is being restricted (step S101: YES), the process is terminated. If it is determined that the use is not restricted, that is, if it is determined that periodic wireless authentication is performed and established (step S 101: NO), a communication status signal input from the wireless communication control unit 101. Whether the wireless communication unit 200 is communicating or communicating by wireless communication (PHS (Personal Handyphone System), PDC (Personal Digital Cellular), W-CDMA (Wideband Code Division Multiple Access), CDMA2000, wireless LAN, etc.) Determine whether or not (Step S102).

[0049] When it is determined that the communication or communication is in progress (step S102: YES), the wireless authentication control unit 304 stops the response of the authentication signal from the wireless authentication unit 300 to the key communication unit 400 (step S103). Then, the use of the communication function for the wireless communication unit 200 is not restricted (step S104), and this process is terminated.

[0050] If the wireless authentication control unit 304 determines that a call or communication is not being performed (step S102: NO), the wireless authentication control unit 304 performs an operation based on a normal wireless authentication sequence, A response signal is transmitted (step S105), and this process is terminated.

In the wireless authentication process of the wireless authentication unit 300 in the mobile phone 100 described above, a signal output from the wireless authentication unit 300 is, for example, as shown in FIG. 8A is a timing chart showing the operation of the wireless authentication unit 500 of the key communication unit 400, FIG. 8B is the operation of the wireless authentication unit 300 of the mobile phone 100, and FIG. 8C is the operation of the wireless communication unit 200 of the mobile phone 100. 8A and 8B show the transmission operation (Tx) and the reception operation (Rx) of the challenge-and-response authentication method.

[0052] In FIG. 8C, when the mobile phone 100 starts a telephone operation and is notified to the wireless authentication unit 300 by the communication state signal (timing T1 in the figure), the wireless authentication unit 300 of the mobile phone 100 responds. Stop sending authentication signals. At this time, the key communication unit 400 Since a response to the received authentication signal cannot be received, the search mode is started and search signal transmission is started.

In FIG. 8C, when the wireless authentication unit 300 is notified by the communication state signal that the telephone operation of the mobile phone 100 is completed (timing T2 in the figure), the wireless authentication of the mobile phone 100 is performed. When unit 300 resumes operation and receives a search signal, it transmits a response signal, and then shifts to authentication mode and resumes the wireless authentication operation using the authentication signal and the response signal.

In the wireless authentication operation shown in FIG. 8 above, the key communication unit 400 only continues the operation based on the challenge-and-response authentication method, so the wireless communication program for the key communication unit 400 The cost of changing the specifications of the wireless authentication system that does not need to be changed can be suppressed.

[0055] Further, the signal output from the wireless authentication unit 300 may be, for example, as shown in FIG. 9A is a timing chart illustrating the operation of the wireless authentication unit 500 of the key communication unit 400, FIG. 9B is the operation of the wireless authentication unit 300 of the mobile phone 100, and FIG. 9C is the operation of the wireless communication unit 200 of the mobile phone 100. .

In FIG. 9C, when the mobile phone 100 starts a telephone operation and is notified to the wireless authentication unit 300 by the communication state signal (timing T1 in the figure), the wireless authentication unit 300 of the mobile phone 100 responds. Transmission of the authentication signal is stopped, and a control signal with information indicating that transmission of the response is stopped is transmitted to the key communication unit 400 (timing tl in the figure). At this time, the key communication unit 400 recognizes that the response from the wireless authentication unit 300 to the key communication unit 400 is stopped when the control signal is received with respect to the transmitted authentication signal, and performs the authentication operation as it is. continue. At this time, the mobile phone is not stolen or misplaced, so in the key communication unit 400, the alarm is not notified to the user by an alarm sound or an alarm display by the output means of the external output unit 507. The control signal may be included in the control signal as desired so that a warning is not notified to the user.

In FIG. 9C, when the telephone operation of the mobile phone 100 is completed and the wireless authentication unit 300 is notified by the communication state signal (timing T2 in the figure), the wireless authentication unit 300 of the mobile phone 100 is notified. Control signal with information that restarts the authentication and authentication operation. Is sent to the key communication unit 400 (timing t2 in the figure). At this time, when receiving a control signal for the transmitted authentication signal, the key communication unit 400 recognizes that the authentication operation is resumed and continues the authentication operation.

[0058] In the wireless authentication operation shown in FIG. 9 above, the key communication unit 400 continues the authentication operation, so that the operation interval can be made longer than when shifting to the search mode shown in FIG. Battery power consumption in the key communication unit 400 can be reduced.

Next, an operation sequence in the case of transmitting a control signal from the mobile phone 100 shown in FIG. 8 to the key communication unit 400 will be described with reference to FIG. The operations of the key communication unit 400 and the mobile phone 1 shown in FIG. 8A and FIG. 8B are simple representations of two rounds of challenge and response. The operations shown in FIG. Is the same.

[0060] In FIG. 10, between the key communication unit 400 and the mobile phone 100, two rounds of authentication processing are executed in a T-second cycle, and within this T-second cycle, authentication signals 1, 3: challenge request, A response transmission is transmitted (steps Kl and K2) and an authentication signal 2, 4 which is a response operation is transmitted, and an authentication challenge and a response response are transmitted (steps Ml and M2). In the figure, the same processing is executed as steps K3 and K4 and steps M3 and M4.

[0061] Then, the cellular phone 100 receives the incoming call notification from the radio base station 600 (step B1), and stops the transmission of the authentication signal in response to the reception of the authentication signal N as described above when transitioning to a call or communication. . Since the key communication unit 400 does not receive a response to the authentication signal N, the key communication unit 400 shifts to the search mode, and repeatedly transmits the search signal at a period of t seconds shorter than the operation interval of the authentication mode (steps K6 to K13). In response to these search signals, the cellular phone 100 does not transmit a response signal because it is in a call or communication. The number of search operations on the key communication unit 400 side shown in FIG. 8 simply shows the operation of FIG.

[0062] Then, when the call or communication is completed in the mobile phone 100 (step Β2), the wireless authentication unit 300 transmits a response signal in response to the received search signal (step Μ5). Ο The key communication unit 400 receives the response signal. Is received, the authentication mode is entered, and authentication processing steps 、 14 to Κ17 and steps Μ6 to Μ9 are repeated in the same manner as above. And run.

As described above, the operation corresponding to the timing chart shown in FIG. 8 is executed between the key communication unit 400 and the mobile phone 100.

Next, FIG. 11 shows an operation sequence when a control signal is transmitted from the mobile phone 100 shown in FIG. 9 to the key communication unit 400. In FIG. 11, the same operations as those in the operation sequence shown in FIG. In this sequence, the mobile phone 100 and the key communication unit 400 operate while maintaining synchronization. Each operation of the key communication unit 400 and the mobile phone 100 shown in FIG. 9A and FIG. 9B is a simple representation of two rounds of challenge-and-response, and is basically the same as the operation shown in FIG. Are similar.

[0065] In FIG. 11, between the key communication unit 400 and the mobile phone 100, two round-trip recognition processing is executed in a T-second cycle, and within this T-second cycle, authentication signals 1, 3: challenge request, Response transmission (steps Kl, K2) and authentication signals 2 and 4 as response signals are received in response to reception of response signals 2 and 4: Authentication challenge and response response are transmitted (step Ml) , M2). In the figure, the same processing is executed as steps K3 and K4 and steps M3 and M4.

[0066] Then, the cellular phone 100 receives the incoming call notification from the radio base station 600 (step B1), and transitions to a call or communication state, as described above, the authentication signal M: challenge request (step Kl 1). Control signal 1 + authentication signal M + 1 is added to the key communication unit 400 with information indicating that the wireless authentication unit 300 also stops responding to the key communication unit 400 as described above. To (step Mi l). Here, the cellular phone device 100 and the key communication unit 400 maintain the synchronization of the authentication operation. When the key communication unit 400 receives the control signal 1 + authentication signal M + 1, the key communication unit 400 recognizes that the response from the wireless authentication unit 300 to the key communication unit 400 is stopped, and continues the authentication mode. The authentication signal M + 2: A challenge request is transmitted (step K12). In response to this authentication signal M + 2: change request, the mobile phone 100 does not transmit an authentication signal.

[0067] Then, when the call or communication is completed in the mobile phone 100 (step B2), an authentication signal M + 3 transmitted from the key communication unit 400 T seconds after the step K12: After receiving the service request (step K13), the control signal 2 + authentication signal M + 4 added with information to resume the authentication operation is transmitted to the key communication unit 400 (step M12). When the communication unit 400 receives the control signal 2 + authentication signal M + 4, the communication unit 400 transmits an authentication signal M + 5: response transmission to the mobile phone 100 (step K14). In response to this authentication signal M + 5: response transmission, the cellular phone 100 transmits an authentication signal M + 6: response response (step Ml3).

As described above, the operation corresponding to the timing chart shown in FIG. 9 is executed between key communication unit 400 and mobile phone 100. Note that, as the control signal shown in FIG. 11, a control signal may be transmitted separately from the normal authentication signal. In addition, when adding control signal information to a normal authentication signal, the control signal can be set to any number of bits at the beginning or end of the authentication signal, or an arbitrary bit. It is not limited.

[0069] As described above, according to the wireless authentication system of the first embodiment, when the mobile phone is talking or communicating, transmission of a response signal from the mobile phone is stopped. Thus, radio authentication radio waves can be prevented from interfering.

[0070] Also, according to the wireless authentication system of the first embodiment, the key communication unit continues the operation based on the challenge-and-response authentication method when the transmission of the response signal by the mobile phone is stopped. It is possible to reduce the cost of changing the specifications of the wireless authentication system without having to change the wireless authentication program of the communication unit.

Furthermore, according to the wireless authentication system of the first embodiment, the key communication unit performs the authentication mode operation by transmitting the control signal to the key communication unit when the transmission of the response signal by the mobile phone is stopped. Since the operation is continued, the operation interval can be made longer than when the mode is shifted to the search mode, and the battery power consumption in the key communication unit can be reduced.

[0072] In the first embodiment, the case where a mobile phone is applied as a wireless communication device has been described. However, the present invention is not limited to this device. For example, a portable information terminal such as a PDA (Personal Digital Assistance), It should be applied to personal computers, devices with integrated computer functions, and portable devices such as MP3 players and HDD players. May be. In addition, although an example of a wireless base station for mobile communication has been described as a communication device, the present invention is not limited to this device, and may be, for example, a wireless LAN access point.

[0073] In the first embodiment, the following method may be used on the mobile phone side in order to reduce the influence of the signal from the key communication unit during a call or communication.

[0074] The attenuation factor of variable attenuator 302a provided in transmission / reception unit 302 in mobile phone 100-side wireless authentication unit 300 is set to a larger value (for example, infinity) than that during authentication communication, and from key communication unit 400 Even if the authentication signal is received by the antenna 301, the signal level received by the receiving unit 302d is lowered. In addition, even if the receiving unit 302d in the transmitting / receiving unit 302 in the wireless authentication unit 300 on the mobile phone 100 side is turned off during a call or communication and the authentication signal from the key communication unit 400 is received by the antenna 301, the receiving unit 302d Avoid receiving signals. Further, a switch may be used instead of the variable attenuator 302a. It is also possible to combine these methods according to the communication status of the mobile phone.

Further, in the first embodiment, the signal transmitted from the force key communication unit 400 0 shown in FIG. 9 shows the case where the mobile phone 100 stops the transmission / reception operation related to the wireless authentication during the call or communication. It is possible to execute only the standby operation that waits for. In this case, even if the control signal transmitted from the mobile phone 100 cannot be received on the key communication unit 400 side, the search signal transmitted from the key communication unit 400 can be received, and the operation immediately proceeds to the authentication operation. It becomes possible to do.

[Embodiment 2]

In the second embodiment, the wireless authentication unit on the key communication unit, which is a wireless communication unit, as well as the wireless authentication unit on the mobile phone, which is a wireless communication device, performs transmission / reception operations using the wireless communication unit on the mobile phone. Perform the appropriate control. Specifically, in order to extend the battery life built in the key side, a control example in the case of intermittent transmission / reception operation in response to the stop of transmission of the authentication signal on the mobile phone side will be described.

It should be noted that the wireless authentication system according to the second embodiment applies the same configuration as the radio authentication system 10 shown in the first embodiment, so that the system configuration, the cellular phone 100 and the key communication unit The illustration and description of each configuration of 400 are omitted. A wireless authentication operation executed in mobile phone 100 and key communication unit 400 in the second embodiment will be described with reference to the flowchart shown in FIG. 12A is a flowchart showing the wireless authentication operation of the mobile phone 100, and FIG. 12B is a flowchart showing the wireless authentication operation of the key communication unit 400.

[0079] In FIG. 12A, the wireless authentication control unit 304 of the mobile phone 100 determines whether or not the use of the communication function is restricted based on the communication state signal input from the wireless communication control unit 101 (step S201). . If it is determined that the usage is being restricted (step S201: YES), the process is terminated. If it is determined that the usage is not restricted (step S201: NO), the wireless communication unit 200 is notified by the communication status signal input from the wireless communication control unit 101 (PHS (Personal Handyphone System), PDC (Personal Digital Cellular), W-CD MA (Wideband Code Division Multiple Access), CDMA2000, wireless LAN, etc.), it is determined whether or not it is in a call or communicating (step S202).

At this time, it is assumed that key communication unit 400 in FIG. 12B is performing normal authentication operation as operation state 1 (step S301).

[0081] If the wireless authentication control unit 304 determines that a call or communication is not being performed (step S202: NO), the wireless authentication unit 300 authenticates a response to the authentication signal received from the key communication unit 400. A process of transmitting a signal is executed (step S203), and this process ends. If the wireless authentication control unit 304 determines that a call or communication is in progress (step S202: YES), a control signal to which information indicating that the response from the wireless authentication unit 300 to the key communication unit 400 is stopped is added. Is transmitted from the wireless authentication unit 300 (step S204).

In step S204, it is necessary to transmit a control signal when the key communication unit 400 is in a standby state based on the time measured by the timer 103.

[0083] After that, the wireless authentication control unit 304 stops the response from the wireless authentication unit 300 to the key communication unit 400 (step S205), and does not restrict the function of the mobile communication function for the wireless communication unit 200! / ヽ(Step S206).

When the wireless authentication unit control unit 504 of the key communication unit 400 receives the control signal, the wireless authentication unit control unit 504 recognizes that the response from the wireless authentication unit 300 to the key communication unit 400 is stopped, and moves to the operation state 2. The following operation is executed (step S302). Key communication unit 40 0 performs, in operation state 2, the authentication operation mode maintenance, alarm operation stop processing, authentication mode authentication signal transmission cycle change processing, or authentication signal transmission stop processing. Further, these processes may be executed in combination.

[0085] Next, the wireless authentication control unit 304 of the mobile phone 100 determines whether or not a call or communication is in power based on the communication state signal input from the wireless communication control unit 101 (step S207), and the communication or communication is in progress. If it is determined that (step S207: YES), the process returns to step S205. That is, when the wireless communication unit 200 is talking or communicating, the wireless authentication control unit 300 repeatedly executes the processes of Step S205 to Step S207.

[0086] If the wireless authentication control unit 304 determines that a call or communication is not being performed (step S207: NO), the wireless communication control unit 304 sends a control signal with information indicating that the authentication operation is resumed to the key communication unit 400. Send (step S 208), and the process ends.

[0087] Upon receiving the control signal, the wireless authentication unit control unit 504 of the key communication unit 400 recognizes that the authentication operation is to be resumed, returns to the operation state 1 (step S303), and ends this process. To do. Here, the key communication unit 400 may shift to another operation state 3 or the like instead of returning to the operation state 1.

In the wireless authentication process of the wireless authentication unit 300 in the mobile phone 100 described above, the signal output from the wireless authentication unit 300 and the intermittent operation in the key communication unit 400 are as shown in FIG. 13, for example. 13A is a timing chart showing the operation of the wireless authentication unit 500 of the key communication unit 400, FIG. 13B is the operation of the wireless authentication unit 300 of the mobile phone 100, and FIG. 13C is the operation of the wireless communication unit 200 of the mobile phone 100. 13A and 13B show the transmission operation (Tx) and the reception operation (Rx) of the challenge-and-response authentication method.

In FIG. 13C, when mobile phone 100 starts a telephone operation and is notified to wireless authentication unit 300 by the communication state signal (timing Tl in the figure), wireless authentication of mobile phone 100 shown in FIG. 13B is performed. Unit 300 transmits a control signal to which information indicating that the response from wireless authentication unit 300 to key communication unit 400 is stopped is added. In FIG. 13A, upon receiving the control signal, the wireless authentication unit 500 of the key communication unit 400 recognizes that the response from the wireless authentication unit 300 to the key communication unit 400 is stopped, and shifts to the intermittent reception operation. To do. This time Because the mobile phone is not stolen or misplaced, the key communication unit 400 does not notify the user of an alarm by means of an alarm sound or an alarm display using the output means of the external output unit 507. A control signal may be included in the control signal as desired so as not to notify the user of an alarm.

[0090] In FIG. 13C, when the telephone operation of the mobile phone 100 is completed and the wireless authentication unit 300 is notified by the communication state signal (timing T2 in the figure), the mobile phone 100 in FIG. The wireless authentication unit 300 transmits a control signal with information indicating that the operation is resumed. In FIG. 13A, when receiving the control signal, the wireless authentication unit 500 of the key communication unit 400 recognizes that the authentication operation is resumed, and resumes the normal authentication signal transmission / reception operation from the intermittent reception operation.

In the wireless authentication operation shown in FIG. 13 above, when the response operation on the mobile phone 100 side stops, the key communication unit 400 does not transmit a search signal, but only performs an intermittent reception operation. The battery consumption of the key communication unit 400 can be further reduced.

Next, an operation sequence when a control signal is transmitted from the mobile phone 100 shown in FIG. 13 to the key communication unit 400 will be described with reference to FIG. In this sequence, the mobile phone 100 and the key communication unit 400 operate while maintaining synchronization. In FIG. 14, the same reference numerals are given to the same operations as those in the operation sequence shown in FIG. In addition, each operation of the key communication unit 400 and the mobile phone 1 shown in FIGS. 13 and 13B is a simple representation of two rounds of challenge and response. The operation shown in FIG. Are similar.

[0093] In FIG. 14, between the key communication unit 400 and the mobile phone 100, two rounds of authentication processing are executed in a leap second cycle, and within this leap second cycle, authentication signals 1, 3: challenge request, A response transmission is sent (steps Kl, Κ2), and authentication signals 2, 4: authentication challenge and response response are sent (steps Ml, M2). In the figure, the same processing is executed as steps K3 and K4 and steps M3 and 4.

Then, when receiving the incoming call notification from the radio base station 600 (step B1), the mobile phone 100 stops transmitting the authentication signal in response to the reception of the authentication signal M: challenge request (step K21) as described above. Stops the response from the wireless authentication unit 300 to the key communication unit 400 A control signal 1 + authentication signal M + 1 added with information to stop is transmitted (step M21). Here, the cellular phone 100 and the key communication unit 400 maintain the synchronization of the authentication operation. In the figure, the control signal is added to the normal authentication signal and the control signal information is added to send control signal 1 + authentication signal M + 1. However, the control signal is sent separately from the normal authentication signal. You may do it. In addition, when adding control signal information to a normal authentication signal, the control signal can be set to any number of bits at the beginning or end of the authentication signal, or any additional bit can be set. Not what you want.

When key control unit 400 receives control signal control signal 1 + authentication signal M + 1, it performs only an intermittent reception operation as shown in FIG. 13A. This interval between intermittent reception operations shall be set to a period of T seconds as shown in the figure. This operation interval is not particularly limited.

[0096] Then, when the call or communication is completed in mobile phone 100 (step B2), control signal 2 + authentication signal M + 2 with information indicating that the authentication operation is resumed is transmitted to key communication unit 400. (Step M22). In the figure, the control signal is added to the normal authentication signal and the control signal information is added to transmit the control signal 2 + authentication signal M + 2, but the control signal is separate from the normal authentication signal. May be transmitted. The bit to be added is arbitrary as described above. Thereafter, a normal two-way authentication operation is executed in the T cycle between the key communication unit 400 and the mobile phone 100 (steps K22, K23, M23, M24).

[0097] As described above, according to the wireless authentication system of the second embodiment, when the mobile phone is talking or communicating, transmission of the response signal from the mobile phone is stopped. Thus, radio authentication radio waves can be prevented from interfering.

[0098] Also, according to the wireless authentication system of the second embodiment, the key communication unit shifts to the intermittent reception operation by transmitting the control signal to the key communication unit when the transmission of the response signal by the mobile phone is stopped. Therefore, the operation interval can be made longer, and the battery power consumption in the key communication unit can be further reduced as compared with the case of the first embodiment.

[0099] In the second embodiment, the case where a mobile phone is applied as a wireless communication device has been described. However, the present invention is not limited to this device. For example, PDA (Personal Digital Assis It may also be applied to portable information terminals such as tance), personal computers and devices having computer functions integrated, and portable devices such as MP3 players and HDD players. Further, although an example of a wireless base station for mobile communication has been described as a communication device, the present invention is not limited to this device, and may be a wireless LAN access point, for example. In the second embodiment, FIG. 13 shows the case where the mobile phone 100 stops the transmission / reception operation related to the wireless authentication while the telephone or communication is in progress. However, the signal transmitted from the key communication unit 400 is It is okay to execute only the stand-by operation. In this case, even if the control signal transmitted from the mobile phone 100 cannot be received on the key communication unit 400 side, the search signal transmitted from the key communication unit 400 can be received, and the process immediately proceeds to the authentication operation. It becomes possible.

[0100] (Embodiment 3)

In the third embodiment, a case will be described in which a filter is provided to suppress interference of a wireless authentication signal to a wireless communication unit inside a mobile phone.

[0101] In each of Embodiments 1 and 2 described above, a case has been described in which the mobile phone stops transmission of the wireless authentication unit in order to avoid interference with a mobile radio wave during a call or communication. As another method for avoiding interference between radio waves and radio authentication radio waves, for example, the radio authentication signal output from the radio authentication unit inside the mobile phone does not interfere with the radio communication control unit! A configuration with a filter inside is also conceivable. The configuration of the cellular phone provided with this filter will be described with reference to the block diagram shown in FIG. In FIG. 15, the same components as those of the mobile phone 100 shown in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.

[0102] In FIG. 15, the mobile phone 700 is provided with a filter 108 between the wires connecting the wireless authentication unit 300, the wireless communication control unit 101, the timer 103, and the alarm circuit unit 104. A filter 308 is provided between the wires connecting the transmitting / receiving unit 302 and the antenna 301 in the wireless authentication unit 300. Examples of the characteristics of the filters 108 and 308 are shown in FIGS. As shown in these characteristic diagrams, filters 108 and 308 have a characteristic that attenuates harmonic components generated by the wireless authentication signal.

[0103] Therefore, by providing the filters 108 and 308, wireless authentication is performed inside the mobile phone 700. The harmonics of the wireless authentication signal for the wireless communication control unit 101, the timer 103, and the alarm circuit unit 104 connected to the verification unit 300 can suppress interference due to components. In addition to providing the filters 108 and 308, the authentication signal transmission level from the wireless authentication unit 300 may be lowered only during a call or communication.

As a result, by adding the filter of the third embodiment in addition to the control operations of the first and second embodiments, the harmonic component generated from the wireless authentication signal can interfere with the mobile communication operation. It becomes possible to suppress effectively.

Note that the use restriction device 307 is installed in the mobile phone 100 such as game operation, phone book operation, mail operation, memo pad operation, camera operation, etc. in addition to the communication function restriction described in the first embodiment. You may restrict application functions other than the phone functions that are provided. However, the use restriction device 307 controls the wireless communication unit 200 according to the first and second embodiments, and in these first and second embodiments, the control for the application function is restricted. It is not a thing. In the first and second embodiments, the case where the response to the mobile phone power key communication unit as a wireless communication device is stopped during a call or communication has been described. In contrast, an authentication signal including a control signal, an authentication signal, or a control signal may be transmitted intermittently.

[0106] The first aspect of the wireless communication device of the present invention communicates with the communication device by the first wireless communication and performs mutual authentication with the wireless communication unit by the second wireless communication. A wireless communication device, wherein a first wireless communication unit that performs the first wireless communication, a second wireless communication unit that performs the second wireless communication, and a communication operation state by the first wireless communication unit And a wireless authentication control means for controlling the wireless communication operation of the second wireless communication means.

[0107] According to this configuration, during the communication by the first wireless communication, the second wireless communication signal related to the mutual authentication is controlled by controlling the communication operation by the second wireless communication related to the mutual authentication. Interference with one wireless communication signal can be prevented.

[0108] A second aspect of the wireless communication apparatus of the present invention is the wireless communication apparatus according to the first aspect, wherein the wireless authentication control means is configured to perform the communication during the communication operation by the first wireless communication means. Stop the transmission operation related to the mutual authentication in the second wireless communication means Take the configuration.

[0109] According to this configuration, during the communication by the first wireless communication, the transmission operation related to the mutual authentication is stopped, so that the second wireless communication signal related to the mutual authentication is changed to the first wireless communication signal. Interference can be prevented.

[0110] A third aspect of the wireless communication apparatus of the present invention is the wireless communication apparatus according to the second aspect, wherein the wireless authentication control means is configured to terminate communication operation by the first wireless communication means. A configuration is adopted in which the wireless communication operation related to the mutual authentication in the second wireless communication means is resumed.

[0111] According to this configuration, the mutual authentication operation between the wireless communication device and the wireless communication unit can be automatically restarted when the communication operation by the first wireless communication unit is completed.

[0112] A fourth aspect of the wireless communication apparatus of the present invention is the wireless communication apparatus according to the first aspect, wherein the wireless authentication control means is configured to perform the communication during the communication operation by the first wireless communication means. The transmission operation related to the mutual authentication in the second wireless communication unit is stopped, and the control signal related to the stop of the transmission operation is transmitted to the wireless communication unit by the second wireless communication unit.

[0113] According to this configuration, during the communication operation by the first wireless communication means, the operation of the wireless communication unit can be controlled by the control signal. As a result, the wireless communication unit can be shifted to an operation that reduces power consumption.

[0114] A fifth aspect of the wireless communication apparatus of the present invention is the wireless communication apparatus according to the fourth aspect, wherein the wireless authentication control means is configured to terminate communication operation by the first wireless communication means. A configuration is adopted in which a control signal for resuming a wireless communication operation related to the mutual authentication is transmitted to the wireless communication unit by the second wireless communication means.

[0115] According to this configuration, the mutual authentication operation between the wireless communication device and the wireless communication unit can be automatically restarted when the communication operation by the first wireless communication unit is completed.

[0116] A sixth aspect of the wireless communication apparatus of the present invention is the wireless communication apparatus according to the fifth aspect, wherein the second wireless communication means varies the signal strength of the transmission / reception signal related to the mutual authentication. The wireless authentication control means includes a variable attenuating means for performing the variable authentication during the wireless communication operation related to the mutual authentication and during the suspension of the transmission operation related to the mutual authentication. A configuration is adopted in which the setting of the attenuation rate of the attenuation means is changed.

[0117] According to this configuration, during the communication operation by the first wireless communication means, the reception level of the received signal in the second wireless communication means can be changed so as not to interfere with the communication operation. it can.

[0118] According to a seventh aspect of the wireless communication apparatus of the present invention, in the wireless communication apparatus according to the sixth aspect, the wireless authentication control means is set while the transmission operation related to the mutual authentication is stopped. A configuration is adopted in which the attenuation rate of the variable attenuation unit is set to be larger than the attenuation rate of the variable attenuation unit set during the wireless communication operation related to the mutual authentication.

[0119] According to this configuration, during the communication operation by the first wireless communication means, the reception level of the reception signal received by the second wireless communication means can be lowered and received by the second wireless communication means. The received reception signal can be prevented from interfering with the communication operation of the first wireless communication means.

[0120] An eighth aspect of the wireless communication apparatus of the present invention is the wireless communication apparatus according to the first aspect, wherein the wireless authentication control means is configured to stop the first operation while the transmission operation related to the mutual authentication is stopped. A configuration is adopted in which the communication function of the wireless communication means is not limited.

[0121] According to this configuration, even when mutual authentication between the wireless communication device and the wireless communication unit is not established, the communication operation in the first wireless communication means can be continued, and the convenience of the wireless communication device is improved. Can be improved.

[0122] A ninth aspect of the wireless communication device of the present invention is the wireless communication device according to the first aspect, wherein the first wireless communication means is in communication with the second wireless communication means during the communication operation. A configuration for stopping the reception operation is adopted.

[0123] According to this configuration, it is possible to prevent the reception signal received by the second wireless communication means from interfering with the communication operation of the first wireless communication device.

[0124] According to a tenth aspect of the wireless communication apparatus of the present invention, in the wireless communication apparatus according to the first aspect, the wireless communication unit includes alarm means for notifying the alarm when the mutual authentication is not established, The wireless authentication control means adopts a configuration in which a control signal indicating that the alarm means is not operated is transmitted to the wireless communication unit by the second wireless communication means during the communication operation by the first wireless communication means. [0125] According to this configuration, the alarm operation of the wireless communication unit is stopped during the communication operation by the first wireless communication means, so that an unnecessary alarm can be prevented from being notified to the user.

[0126] An eleventh aspect of the wireless communication apparatus of the present invention is the wireless communication apparatus according to the first aspect, further comprising alarm means for issuing an alarm when the mutual authentication is not established, wherein the wireless authentication control means includes A configuration is adopted in which the alarm means is not operated during the communication operation by the first wireless communication means.

[0127] According to this configuration, during the communication operation by the first wireless communication means, the alarm operation of the wireless communication unit is stopped, so that an unnecessary alarm can be prevented from being notified to the user.

[0128] A twelfth aspect of the wireless authentication system of the present invention is a wireless authentication system that performs mutual authentication by wireless communication between a wireless communication device and a wireless communication unit, wherein the wireless communication device is a communication device. Between the first wireless communication means for performing communication with the wireless communication unit and the wireless communication unit with the wireless communication unit using the second wireless communication. And a wireless authentication control means for controlling a wireless communication operation of the second wireless communication means in accordance with a communication operation state of the first wireless communication means.

[0129] According to this configuration, during the communication by the first wireless communication, the second wireless communication signal related to the mutual authentication is controlled by controlling the communication operation of the second wireless communication related to the mutual authentication. Interference with one wireless communication signal can be prevented.

[0130] A thirteenth aspect of the wireless authentication method of the present invention is a wireless authentication method for performing mutual authentication by wireless communication between a wireless communication device and a wireless communication unit. The first wireless communication step for communicating with the communication device by the first wireless communication and the wireless communication device performs wireless communication related to the mutual authentication with the wireless communication unit. A second wireless communication step for performing the second wireless communication; and a wireless communication device for controlling a wireless communication operation in the second wireless communication according to a communication operation state of the first wireless communication in the wireless communication device. An authentication control step.

[0131] According to this method, the second wireless communication involved in mutual authentication is performed during the communication by the first wireless communication. By controlling the communication operation by communication, it is possible to prevent the second wireless communication signal related to mutual authentication from interfering with the first wireless communication signal.

[0132] This specification is based on Japanese Patent Application No. 2005-376619 filed on December 27, 2005. All this content is included here.

Industrial applicability

[0133] The present invention controls the wireless authentication operation of the wireless authentication unit mounted on the mobile phone to stop when the mobile phone transmits / receives mobile radio waves, thereby preventing the wireless authentication signal from interfering with the mobile communication signal. This is useful for wireless authentication systems and the like in that it can prevent battery consumption on the key side.

Claims

The scope of the claims

[1] A wireless communication device that performs communication with a communication device by first wireless communication and performs mutual authentication with a wireless communication unit by second wireless communication,

First wireless communication means for performing the first wireless communication;

A second wireless communication means for performing the second wireless communication;

A wireless communication apparatus comprising: a wireless authentication control unit that controls a wireless communication operation of the second wireless communication unit in accordance with a communication operation state of the first wireless communication unit.

2. The wireless communication apparatus according to claim 1, wherein the wireless authentication control means stops a transmission operation related to the mutual authentication in the second wireless communication means during a communication operation by the first wireless communication means.

3. The wireless communication apparatus according to claim 2, wherein the wireless authentication control means restarts the wireless communication operation related to the mutual authentication in the second wireless communication means when the communication operation by the first wireless communication means is completed. .

[4] During the communication operation by the first wireless communication means, the wireless authentication control means stops the transmission operation related to the mutual authentication in the second wireless communication means, and stops the transmission operation. 2. The wireless communication apparatus according to claim 1, wherein a related control signal is transmitted to the wireless communication unit by the second wireless communication means.

[5] The wireless authentication control means sends a control signal for resuming the wireless communication operation related to the mutual authentication to the wireless communication unit by the second wireless communication means when the communication operation by the first wireless communication means ends. The wireless communication device according to claim 4, which is transmitted to

[6] The second wireless communication means includes variable attenuation means for changing a signal strength of a transmission / reception signal related to the mutual authentication,

6. The wireless communication apparatus according to claim 5, wherein the wireless authentication control means changes the setting of the attenuation rate of the variable attenuation means during a wireless communication operation related to the mutual authentication and when a transmission operation related to the mutual authentication is stopped. .

[7] The wireless authentication control means sets the attenuation rate of the variable attenuation means set while the transmission operation related to mutual authentication is stopped during the wireless communication operation related to the mutual authentication. The wireless communication device according to claim 6, wherein the wireless communication device is larger than the rate.

8. The wireless communication apparatus according to claim 1, wherein the wireless authentication control means does not restrict a communication function of the first wireless communication means while the transmission operation related to the mutual authentication is stopped.

9. The wireless communication apparatus according to claim 1, wherein the wireless authentication control means stops the reception operation in the second wireless communication means during the communication operation by the first wireless communication means.

[10] The wireless communication unit includes alarm means for notifying the alarm when the mutual authentication is not established,

2. The wireless authentication control means transmits a control signal to the effect that the alarm means is not operated during the communication operation by the first wireless communication means to the wireless communication unit by the second wireless communication means. Wireless communication device.

[11] An alarm means for issuing an alarm when the mutual authentication is not established,

2. The wireless communication apparatus according to claim 1, wherein the wireless authentication control means does not operate the alarm means during a communication operation by the first wireless communication means! /.

[12] A wireless authentication system that performs mutual authentication by wireless communication between a wireless communication device and a wireless communication unit,

The wireless communication device

A first wireless communication means for communicating with the communication device by first wireless communication; and a second wireless communication for performing wireless communication related to the mutual authentication with the wireless communication unit by second wireless communication. Wireless communication means;

A wireless authentication system comprising: a wireless authentication control unit that controls a wireless communication operation of the second wireless communication unit in accordance with a communication operation state of the first wireless communication unit.

[13] A wireless authentication method for performing mutual authentication by wireless communication between a wireless communication device and a wireless communication unit,

In the wireless communication device, a first wireless communication step of performing communication with the communication device by first wireless communication;

A second wireless communication step of performing wireless communication related to the mutual authentication with the wireless communication unit by second wireless communication with the wireless communication device;

The wireless communication apparatus includes a wireless authentication control step for controlling wireless communication operation in the second wireless communication according to a communication operation state in the first wireless communication. Wireless authentication method.