WO2009087718A1 - 通信方法およびそれを利用した無線装置 - Google Patents
通信方法およびそれを利用した無線装置 Download PDFInfo
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- WO2009087718A1 WO2009087718A1 PCT/JP2008/003752 JP2008003752W WO2009087718A1 WO 2009087718 A1 WO2009087718 A1 WO 2009087718A1 JP 2008003752 W JP2008003752 W JP 2008003752W WO 2009087718 A1 WO2009087718 A1 WO 2009087718A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/04—Protocols for data compression, e.g. ROHC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00095—Systems or arrangements for the transmission of the picture signal
- H04N1/00103—Systems or arrangements for the transmission of the picture signal specially adapted for radio transmission, e.g. via satellites
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Definitions
- the present invention relates to communication technology, and more particularly, to a communication method for executing settings related to a wireless network with another wireless device, and a wireless device using the communication method.
- WPA supports PSK (Pre-Shared Key) to realize mutual authentication between wireless LAN devices.
- PSK Pre-Shared Key
- AP Access Point
- AP Access Point
- client connected to the AP.
- PSK the user needs to make a number of settings in order to protect the security of the wireless LAN network, such as setting an SSID (Service Set Identifier) that is information for identifying the wireless LAN network.
- SSID Service Set Identifier
- WPS Wi-Fi Protected Setup
- settings such as SSID and WPA are made by inputting a personal identification number (PIN) or pressing a dedicated button (PBC: Push-Button Configuration).
- PIN personal identification number
- PBC Push-Button Configuration
- Wi-Fi CERTIFIED for Wi-Fi Protected Setup Significantly improved the user environment of Wi-Fi networks in homes and SOHO”, [online], 2007, Wi-FiAlliance, full text, [November 22, 2007 Search], Internet ⁇ URL: http://www.wirelessethernet.org/files/kc/wp_21_Wi-Fi_Protected_Setup_Whitepaper_en.pdf>
- a secure wireless LAN can be provided if an instruction for simple connection is given to the two wireless devices, for example, by pressing a dedicated button.
- a network is easily constructed.
- the wireless device cannot receive an instruction for easy connection through the dedicated button. Cannot execute. As a result, both settings are difficult.
- the present invention has been made in view of such a situation, and an object of the present invention is to provide a technique for reducing a user's setting burden even in an environment where a wireless device having an easy connection function and a wireless device not having the simple connection function coexist. It is to be.
- a wireless device includes: a reception unit that receives a request for transition to a preparation mode for preparing settings from another wireless device that is not configured with respect to a wireless network; The first execution unit that shifts to the preparation mode when the request received by the reception unit is followed, and the setting that is received when a setting request is received from another wireless device when the first execution unit shifts to the preparation mode.
- the first execution unit that shifts to the preparation mode when the request received by the reception unit is followed, and the setting that is received when a setting request is received from another wireless device when the first execution unit shifts to the preparation mode.
- a communication unit that performs communication with another wireless device by shifting to the communication mode.
- the second execution unit rejects the transition to the execution mode even if it receives a setting request from another wireless device.
- the device includes: a first request unit that requests a transition to a preparation mode for preparing a setting to another wireless device that has not been set for a wireless network; and another wireless device according to a request in the first request unit.
- the second request unit that requests the setting to the other wireless device and the execution mode for the other wireless device to execute the setting according to the request in the second request unit.
- the wireless device shifts to a communication mode for performing communication.
- a communication unit that performs communication with other wireless devices.
- Still another aspect of the present invention is a communication method.
- the method includes a step of receiving a request for shifting to a preparation mode for preparing a setting from another wireless device that has not been set for the wireless network, and a step of shifting to a preparation mode when the received request is followed.
- the wireless network can be set with another wireless device by shifting to the execution mode for executing the setting.
- the step of executing the setting rejects the transition to the execution mode even if a setting request from another wireless device is received in the communication mode.
- Still another aspect of the present invention is also a communication method.
- the method includes a step of requesting another wireless device that has not been configured for a wireless network to transition to a preparation mode for preparing a setting, and the other wireless device transitions to a preparation mode according to the request for transition.
- the other wireless device shifts to an execution mode for executing the setting in accordance with the setting request and the step of requesting the setting to the other wireless device, between the other wireless devices, A step of executing settings related to a wireless network; and a step of executing communication with another wireless device when the wireless device shifts to a communication mode for performing communication after executing the setting.
- Still another aspect of the present invention is also a wireless device.
- This device performs setting related to a wireless network with other wireless devices that are not set related to the wireless network, and also manages an execution unit that manages the setting contents and another wireless device that executes settings in the execution unit.
- a communication unit that executes communication with the communication device.
- the execution unit deletes the setting contents for other wireless devices that have not performed communication with the communication unit for a certain period of time.
- Still another aspect of the present invention is also a communication method.
- This method includes a step of executing a setting related to a wireless network, a step of managing setting contents, and a communication with the other wireless device that has performed the setting with another wireless device that has not been set related to the wireless network.
- the managing step deletes the setting contents for other wireless devices that have not performed communication for a certain period.
- 10 in-vehicle camera device 12 in-vehicle monitor device, 20 wireless unit, 22 modulation / demodulation unit, 24 processing unit, 26 control unit, 28 decoding unit, 30 display unit, 32 input unit, 34 IF unit, 36 storage unit, 40 request unit, 42 confirmation unit, 44 execution unit, 50 radio unit, 52 modulation / demodulation unit, 54 processing unit, 56 control unit, 58 encoding unit, 60 imaging unit, 62 storage unit, 70 communication mode operation unit, 72 preparation mode operation unit, 74 Execution mode operation unit, 80 reception unit, 82 setting unit, 84 management unit, 100 communication system.
- the embodiment of the present invention is formed by a wireless device having a simple connection function (WPS) (hereinafter referred to as “compatible device”) and a wireless device having no simple connection function (hereinafter referred to as “non-compatible device”).
- WPS simple connection function
- non-compatible device a wireless device having no simple connection function
- a wireless communication system having an easy connection function corresponds to having a button or the like that should receive an instruction for executing settings related to a wireless network from a user.
- the wireless communication system corresponds to, for example, a wireless network such as a wireless LAN conforming to the IEEE 802.11n standard. When the user presses a dedicated button provided on the corresponding device, the corresponding device requests a simple connection to the non-compatible device.
- the non-compatible device does not support WPS, it is not possible to determine at what timing the simple connection should be started, and it is not possible to execute processing necessary for the simple connection with the compatible device. Further, in order to construct a secure wireless network, when a simple connection request is made from a wireless device that is not a communication target, it is necessary to reject the request.
- a non-compatible device is within a predetermined period after a simple connection is requested from the compatible device, and between the corresponding devices as long as a predetermined condition is satisfied, such as when it is necessary to connect the requested compatible device.
- the non-compliant device does not support WPS, the compatible device can realize simple connection and a secure wireless network can be easily constructed.
- a simple connection is performed only with a corresponding device that is to be a communication target, a secure wireless communication network is reliably constructed.
- the execution period of simple connection is not limited, and further improvement in safety is further required.
- “Easy connection” includes “Wi-Fi Protected Setup Specification 1.0”, Wi-Fi Alliance, ⁇ URL: http://www.wi-fi.org/wifi-protected-setup> A connection protocol that conforms to is included. Since this connection protocol is defined in detail in the above-mentioned standard, a description thereof will be omitted here.
- the non-compliant device is a pre-stage of the execution mode in addition to the “communication mode” for executing communication and the “execution mode” for executing processing corresponding to simple connection. "Preparation mode" is specified.
- the non-compliant device operates so as not to enter the execution mode unless it passes through the preparation mode.
- the corresponding device receives an instruction from the user by depressing the dedicated button, it notifies a signal for requesting the transition to the preparation mode.
- the non-compliant device receives the request, it checks its own connection status, and shifts to the preparation mode when it is not connected to anyone or when the connection partner is not in the vicinity.
- the non-compliant device When the non-compliant device enters the preparation mode, the non-compliant device transmits a connection request to the non-compliant device, and the non-compliant device enters the execution mode accordingly. At this time, the non-compatible device shifts to the execution mode when the corresponding device that has requested the transition to the preparation mode matches the corresponding device that has transmitted the connection request. Thereafter, a simple connection is executed between the two.
- FIG. 1 shows a configuration of a communication system 100 according to an embodiment of the present invention.
- the communication system 100 includes an in-vehicle camera device 10 and an in-vehicle monitor device 12.
- the on-vehicle monitor device 12 corresponds to the above-described corresponding device
- the on-vehicle camera device 10 corresponds to the above-mentioned non-compatible device.
- the in-vehicle camera device 10 captures a moving image or a still image (hereinafter collectively referred to as “image”) and transmits data of the captured image (hereinafter referred to as “image data”) to the in-vehicle monitor device 12.
- the wireless LAN is used for the wireless network between the in-vehicle camera device 10 and the in-vehicle monitor device 12.
- the in-vehicle monitor device 12 receives image data from the in-vehicle camera device 10 and displays an image on the monitor.
- the in-vehicle monitor device 12 supports WPS simple connection, and includes a button (not shown) for a user to instruct execution of simple connection.
- FIG. 2 shows the configuration of the in-vehicle monitor device 12.
- the in-vehicle monitor device 12 includes a radio unit 20, a modem unit 22, a processing unit 24, a control unit 26, a decoding unit 28, a display unit 30, an input unit 32, an IF unit 34, and a storage unit 36.
- the wireless unit 20 performs communication with the in-vehicle camera device 10 (not shown). As a reception process, the radio unit 20 performs frequency conversion on a radio frequency signal received via an antenna to generate a baseband signal. Further, the radio unit 20 outputs a baseband signal to the modem unit 22. In general, baseband signals are formed by in-phase and quadrature components, so two signal lines should be shown, but only one signal line is shown here for clarity. Shall.
- the radio unit 20 also includes an LNA (Low Noise Amplifier), a mixer, an AGC, and an A / D conversion unit. As a transmission process, the radio unit 20 performs frequency conversion on the baseband signal input from the modem unit 22 to generate a radio frequency signal. Further, the radio unit 20 transmits a radio frequency signal from the antenna.
- the wireless unit 20 also includes a PA (Power Amplifier), a mixer, and a D / A conversion unit.
- the modem unit 22 demodulates the baseband signal from the radio unit 20 as a reception process. Further, the modem unit 22 outputs the demodulated result to the processing unit 24. Further, the modem unit 22 modulates the signal from the processing unit 24 as a transmission process. Further, the modem unit 22 outputs the modulated result to the radio unit 20 as a baseband signal.
- the modem unit 22 also executes FFT as a reception process and IFFT as a transmission process.
- the modem unit 22 also performs despreading as reception processing and also performs spreading as transmission processing.
- the modem unit 22 also executes adaptive array signal processing as reception processing and also performs distribution processing into a plurality of streams as transmission processing.
- the processing unit 24 performs digital signal processing on the signal from the modem unit 22 and the signal to the modem unit 22.
- digital signal processing is encoding of error correction as transmission processing and decoding of error correction as reception processing.
- the digital signal processing is not limited to this.
- the processing unit 24 outputs a result of executing digital signal processing on the signal from the modem unit 22 to the control unit 26, and inputs a signal that is a source of the signal to the modem unit 22 from the control unit 26.
- the wireless unit 20 to the processing unit 24 perform communication with the in-vehicle camera device 10 (not shown) by connecting to the wireless network (not shown).
- the control unit 26 controls the overall operation of the in-vehicle monitor device 12.
- the control unit 26 executes a simple connection process with the in-vehicle camera device 10 (not shown).
- the control unit 26 performs the setting related to the wireless network by simple connection with the in-vehicle camera device 10 in which the setting related to the wireless network is not made.
- the setting related to the wireless network is a setting required for security protection such as PSK and SSID. The description of these processes will be described later.
- the control unit 26 receives image data from the in-vehicle camera device 10 and displays it on the display unit 30 while communication with the in-vehicle camera device 10 is being performed.
- the control unit 26 receives the result of the digital signal processing from the processing unit 24 and outputs the result to the decoding unit 28 as an output process.
- the decoding part 28 reproduces
- the decoding unit 28 outputs the reproduced image to the display unit 30.
- the display unit 30 includes an LCD (Liquid Crystal Display) or the like. The display unit 30 receives an image from the decoding unit 28 and displays the image.
- the IF unit 34 includes buttons and receives instructions from the user.
- the IF unit 34 corresponds to the dedicated button described above, and accepts a PBC instruction, that is, an easy connection instruction from the user. This is equivalent to the user pressing Push Button.
- the input unit 32 detects the PBC instruction received by the IF unit 34.
- the input part 32 detects other than the instruction
- the control unit 26 receives an instruction signal from the input unit 32 and outputs data corresponding to the instruction signal to the processing unit 24.
- the storage unit 36 stores identification information of the in-vehicle camera device 10 that is to be a communication target.
- the identification information is, for example, a MAC address or an IP address.
- the storage unit 36 can be recorded by an external write protection release instruction, and cannot be recorded by an external write protection setting instruction.
- This configuration can be realized in terms of hardware by a CPU, memory, or other LSI of any computer, and in terms of software, it is realized by a program having a communication function loaded in the memory. Describes functional blocks realized by collaboration. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.
- FIG. 3 shows the configuration of the control unit 26.
- the control unit 26 includes a request unit 40, a confirmation unit 42, and an execution unit 44.
- the request unit 40 receives a PBC instruction from the input unit 32 (not shown).
- the request unit 40 requests the in-vehicle camera device 10 (not shown) that has not been set for the wireless network to shift to a preparation mode for preparing settings.
- the signal used for the request is called a “preparation mode shift instruction signal”.
- the request unit 40 includes information for specifying the transmission source, that is, the in-vehicle monitor device 12 in the preparation mode transition instruction signal.
- the information for specifying the in-vehicle monitor device 12 corresponds to identification information for specifying the in-vehicle monitor device 12.
- the request unit 40 notifies the preparation mode transition instruction signal from the processing unit 24 via the wireless unit 20.
- the confirmation unit 42 When the in-vehicle camera device 10 (not shown) shifts to the preparation mode in accordance with the preparation mode shift instruction signal transmitted from the request unit 40, the confirmation unit 42 indicates a signal indicating that (hereinafter, “preparation mode shift completion is completed”. Signal ”) from the in-vehicle camera device 10.
- the preparation mode transition completion signal reaches the confirmation unit 42 from the wireless unit 20 via the processing unit 24.
- the confirmation unit 42 confirms the transition of the in-vehicle camera device 10 to the preparation mode by receiving the preparation mode transition completion signal.
- the confirmation unit 42 notifies the execution unit 44 of confirmation.
- the execution unit 44 When the execution unit 44 receives confirmation from the confirmation unit 42, the execution unit 44 generates a signal for requesting setting (hereinafter referred to as “setting request signal”). Further, the execution unit 44 transmits a setting request signal from the processing unit 24 to the in-vehicle camera device 10 via the wireless unit 20. At that time, the execution unit 44 includes information for specifying the transmission source, that is, the in-vehicle monitor device 12 in the preparation mode transition completion signal. For this reason, the preparation mode shift instruction signal and the setting request signal include the same information. The execution unit 44 executes setting related to the wireless network with the in-vehicle camera device 10 when the in-vehicle camera device 10 shifts to an execution mode for executing the setting in accordance with the setting request signal.
- the execution unit 44 receives a response signal from the in-vehicle camera device 10 via the processing unit 24 from the wireless unit 20 after transmitting the setting request signal, the in-vehicle camera device 10 shifts to the execution mode. Recognize.
- the description thereof is omitted here.
- the content of the setting related to the wireless network made by the execution unit 44 is stored in the storage unit 36 (not shown).
- the control unit 26 executes communication with the in-vehicle camera device 10 when the in-vehicle camera device 10 shifts to a communication mode for executing communication.
- the control unit 26 may recognize that the in-vehicle camera device 10 has shifted to the communication mode when the setting process in the execution unit 44 is completed. In communication, the control unit 26 uses the setting contents stored in the storage unit 36.
- the preparation mode, execution mode, and communication mode in the in-vehicle camera device 10 will be described later.
- FIG. 4 shows the configuration of the in-vehicle camera device 10.
- the in-vehicle camera device 10 includes a wireless unit 50, a modem unit 52, a processing unit 54, a control unit 56, an encoding unit 58, an imaging unit 60, and a storage unit 62.
- the radio unit 50, the modem unit 52, and the processing unit 54 are the same types as the radio unit 20, the modem unit 22, and the processing unit 24 illustrated in FIG.
- the imaging unit 60 corresponds to a CCD (Charge Coupled Device) image sensor or the like, and acquires an image from the outside.
- the imaging unit 60 outputs the acquired image to the encoding unit 58.
- the encoding unit 58 generates image data by performing compression encoding processing on the image received from the imaging unit 60.
- the compression method for example, the Motion JPEG (Joint Photographic Experts Group) method or the like is used.
- the encoding unit 58 outputs the image data to the control unit 56.
- the control unit 56 controls the overall operation of the in-vehicle camera device 10. For example, the control unit 56 defines a communication mode, a preparation mode, and an execution mode as operations of the in-vehicle camera device 10, and controls the operation of these modes and the transition between the modes. These will be described later.
- the control unit 56 outputs the image data received from the encoding unit 58 to the processing unit 54 in the communication mode.
- storage part 62 memorize
- the identification information is, for example, a MAC address or an IP address.
- FIG. 5 shows the configuration of the control unit 56.
- the control unit 56 includes a communication mode operation unit 70, a preparation mode operation unit 72, and an execution mode operation unit 74.
- the communication mode operation unit 70 executes a communication mode as an operation of the in-vehicle camera device 10.
- the communication mode is a mode in which the wireless unit 50 causes the processing unit 54 to execute communication with the in-vehicle monitor device 12.
- the communication mode operation unit 70 outputs the image data received from the encoding unit 58 to the processing unit 54 and causes the processing unit 54 to transmit the image data to the wireless unit 50.
- the communication mode is also set when communication is not actually being executed.
- the communication mode operation unit 70 receives a preparation mode transition instruction signal from the in-vehicle monitor device 12 that is not set for the wireless network with the in-vehicle monitor device 12 through the processing unit 54 from the wireless unit 50.
- the preparation mode transition instruction signal corresponds to a request for transition to the preparation mode for preparing the setting.
- the communication mode operation unit 70 outputs the received preparation mode transition instruction signal to the preparation mode operation unit 72.
- the preparation mode operation unit 72 receives a preparation mode transition instruction signal from the communication mode operation unit 70.
- the preparation mode operation unit 72 confirms whether a connection partner exists. Specifically, the preparation mode operation unit 72 notifies the probe request from the processing unit 54 via the wireless unit 50. In addition, the preparation mode operation unit 72 is assumed to have a connection partner when a probe response is received within a predetermined period from the wireless unit 50 via the processing unit 54.
- the preparation mode operation unit 72 shifts to the preparation mode according to the preparation mode shift instruction signal when there is no connection partner.
- the preparation mode is a mode that can shift to an execution mode described later.
- the preparation mode transition instruction signal includes information for specifying the in-vehicle monitor device 12 serving as a transmission source, and the preparation mode operation unit 72 stores the information in the control unit 56 (not shown).
- the preparation mode operation unit 72 receives a setting request signal from the in-vehicle monitor device 12 via the wireless unit 50 and the processing unit 54.
- the preparation mode operation unit 72 outputs the received setting request signal to the execution mode operation unit 74.
- the preparation mode operation unit 72 causes the communication mode operation unit 70 to return to the communication mode if the setting request signal is not received within a predetermined period after entering the preparation mode.
- the preparation mode operation unit 72 causes the communication mode operation unit 70 to maintain the communication mode without following the preparation mode transition instruction signal.
- the execution mode operation unit 74 receives a setting request signal from the preparation mode operation unit 72. Thereafter, the execution mode operation unit 74 shifts to the execution mode.
- the execution mode is a mode for executing settings related to the wireless network with the in-vehicle monitor device 12.
- the execution mode operation unit 74 performs setting related to the wireless network with the in-vehicle monitor device 12 by shifting to the execution mode.
- the setting request signal also includes information for specifying the in-vehicle monitor device 12 that is the transmission source, as in the preparation mode transition instruction signal.
- the execution mode operation unit 74 shifts to the execution mode when the information stored in the control unit 56 matches the information included in the setting request signal. This corresponds to shifting to the execution mode when the in-vehicle monitor device 12 that has transmitted the request for transition to the preparation mode matches the in-vehicle monitor device 12 that has transmitted the setting request. On the other hand, the execution mode operation unit 74 rejects the transition to the execution mode when the two pieces of information do not match. In the communication mode, even if the execution mode operation unit 74 receives a setting request signal from the in-vehicle monitor device 12, the execution mode operation unit 74 rejects the transition to the execution mode and causes the communication mode operation unit 70 to maintain the communication mode.
- the communication mode operation unit 70 executes communication with the in-vehicle monitor device 12 by executing the setting in the execution mode operation unit 74 and then shifting to the communication mode.
- FIG. 6 is a sequence diagram illustrating a setting procedure in the communication system 100.
- the in-vehicle monitor device 12 detects a button press (S10).
- the vehicle monitor apparatus 12 notifies a preparation mode transition instruction signal (S12).
- the in-vehicle camera device 10 confirms the connection status (S14) and shifts to the preparation mode (S16).
- the in-vehicle camera device 10 transmits a preparation mode transition completion signal to the in-vehicle monitor device 12 (S18).
- the in-vehicle monitor device 12 transmits a setting request signal to the in-vehicle camera device 10 (S20).
- the in-vehicle camera device 10 When receiving the setting request signal, the in-vehicle camera device 10 shifts to the execution mode (S22). Thereafter, the in-vehicle camera device 10 and the in-vehicle monitor device 12 execute a setting process (S24). After the setting process is completed, the in-vehicle camera device 10 shifts to the communication mode (S26). The in-vehicle camera device 10 transmits image data to the in-vehicle monitor device 12 (S28).
- FIG. 7 is a flowchart showing a setting procedure in the in-vehicle monitor device 12. If the input unit 32 does not accept pressing of the button (N in S50), the input unit 32 stands by. If the input unit 32 accepts the button depression (Y in S50), the request unit 40 transmits a preparation mode transition instruction signal from the processing unit 24 via the wireless unit 20 (S52). When the confirmation unit 42 receives the preparation mode transition completion signal from the wireless unit 20 via the processing unit 24 (Y in S54), the confirmation unit 42 transmits a setting request signal from the processing unit 24 via the wireless unit 20 (S56). ). Thereafter, the execution unit 44 executes setting processing (S58). If the setting process is not completed (N in S60), the process returns to step 58.
- the control unit 26 receives image data from the wireless unit 20 (S62).
- the decoding unit 28 decodes the image data, and the display unit 30 displays the image (S64).
- the confirmation unit 42 does not receive the preparation mode transition completion signal from the wireless unit 20 via the processing unit 24 (N in S54), the processing ends.
- FIG. 8 is a flowchart showing a setting procedure in the in-vehicle camera device 10.
- the communication mode operation unit 70 receives the preparation mode transition instruction signal from the wireless unit 50 via the processing unit 54 (S80).
- the preparation mode operation unit 72 transmits a probe request from the processing unit 54 via the wireless unit 50 (S82). If there is no response (N in S84), the preparation mode operation unit 72 shifts to the preparation mode (S86).
- the preparation mode operation unit 72 transmits a preparation mode transition completion signal from the processing unit 54 via the wireless unit 50 (S88). If the preparation mode operation unit 72 receives a setting request signal from the wireless unit 50 via the processing unit 54 within a certain period (Y in S90), the execution mode operation unit 74 shifts to the execution mode (S92). .
- the execution mode operation unit 74 executes a setting process (S94). If the setting process is not completed (N in S96), the process returns to step 94. When the setting process is completed (Y in S96), the communication mode operation unit 70 shifts to the communication mode (S98). If the preparation mode operation unit 72 does not receive the setting request signal from the wireless unit 50 via the processing unit 54 within a certain period (N in S90), the communication mode operation unit 70 shifts to the communication mode. (S98). If there is a response mode (Y in S84), the preparation mode operation unit 72 causes the communication mode operation unit 70 to maintain the communication mode and ends.
- the non-compliant device defines a communication mode, a preparation mode, and an execution mode, and security is improved by not transitioning to the execution mode without passing through the preparation mode.
- the non-compliant device executes setting processing with the compliant device for which a setting request is made. Thereafter, the non-compatible device cancels the setting with the corresponding device that has not performed communication for a certain period. This also applies to the corresponding device. That is, in consideration of the nature of the application, the wireless device executes setting processing with all other wireless devices that have reacted, and lists the setting contents (hereinafter, the list of setting contents is referred to as “list”). ).
- the wireless device leaves only the setting contents related to other wireless devices with which communication is performed after a predetermined period. Even if the setting process is temporarily executed with another wireless device installed in another vehicle due to the movement of the vehicle, the other wireless device generally has a time elapsed. By moving, communication is lost. As a result, the security is improved by deleting the setting contents with such other wireless devices.
- FIG. 9 shows a configuration of the control unit 56 according to a modification of the present invention.
- the control unit 56 includes a reception unit 80, a setting unit 82, and a management unit 84.
- the accepting unit 80 receives a setting request from the in-vehicle monitoring device 12 that has not been set for the wireless network via the processing unit 54 from the wireless unit 50.
- the setting request corresponds to the setting request signal described above.
- the accepting unit 80 outputs to the setting unit 82 that the setting request signal has been received.
- the setting unit 82 inputs that the setting request signal has been received from the receiving unit 80, the setting unit 82 performs setting related to the wireless network from the wireless unit 50 via the processing unit 54.
- Such a setting corresponds to the processing in the execution mode described above, but since a known technique may be used, the description thereof is omitted here.
- the management unit 84 manages the setting content made in the setting unit 82 and the setting content for the in-vehicle monitor device 12.
- the management unit 84 stores the setting contents in the storage unit 62 (not shown).
- FIG. 10 shows a data structure of a list stored in the storage unit 62 according to the modification of the present invention.
- an identification number column 200 an identification number for identifying the in-vehicle monitor device 12 is shown.
- the setting content column 204 the setting content corresponding to the in-vehicle monitor device 12 is shown.
- the set time column 202 shows the time at which the setting contents are generated.
- the management part 84 will update the time of the setting time column 202 with respect to the said vehicle-mounted monitor apparatus 12, if communication with the vehicle-mounted monitor apparatus 12 is performed. That is, the set time column 202 also indicates the latest communication time.
- the control unit 56 controls communication with the in-vehicle monitor device 12 that has executed the settings. As described above, the control unit 56 outputs the image data received from the encoding unit 58 to the processing unit 54. Further, the control unit 56 causes the processing unit 54 to transmit image data to the wireless unit 50. At that time, the control unit 56 uses the setting content stored in the storage unit 62. While the communication is being performed, the management unit 84 identifies the in-vehicle monitor device 12 that has not performed the communication for a certain period. For example, the management unit 84 measures the current time, and derives the difference between the time in the set time column 202 stored in the storage unit 62 and the current time.
- the management part 84 specifies the vehicle-mounted monitor apparatus 12 from which the magnitude
- the control unit 26 included in the in-vehicle camera device 10 also transmits a setting request signal, but otherwise operates in the same manner as the control unit 56. Therefore, the above description of the control unit 56 is also valid for the control unit 26.
- FIG. 11 is a sequence diagram showing a setting procedure in the communication system 100 according to the modification of the present invention.
- the in-vehicle monitor device 12 detects a button press (S150).
- the vehicle monitor apparatus 12 notifies the setting request signal (S152).
- the in-vehicle camera device 10 receives the setting request signal
- the in-vehicle camera device 10 and the in-vehicle monitor device 12 execute a setting process (S154).
- the in-vehicle monitor device 12 stores the setting content in the storage unit 36 (S156), and the in-vehicle camera device 10 stores the setting content in the storage unit 62 (S158).
- FIG. 12 is a flowchart showing a deletion procedure in the control unit 56. If there is a device that has not performed communication for a certain period (Y in S200), the management unit 84 deletes the setting contents of the device from the storage unit 62 (S202). On the other hand, if there is no device that has not performed communication for a certain period (N in S200), the management unit 84 ends the process.
- the operation mode in the execution mode can be limited because the mode does not shift to the execution mode unless the preparation mode is passed. Moreover, since the operation opportunities in the execution mode are limited, security can be improved. Further, if the mode is shifted to the preparation mode, the mode can be subsequently shifted to the execution mode, so that the setting can be performed as necessary. Moreover, since the setting is executed as necessary, the convenience for the user can be improved. If the mode is not shifted to the execution mode via the preparation mode, the communication mode is maintained, so that communication can be continued.
- the mode is shifted to the execution mode, so that the security can be further improved.
- the execution mode is executed after passing through the preparation mode, even when one wireless device is compatible with WPS and the remaining wireless devices are not compatible with WPS, the reliability when establishing a communication session is improved. Convenience can be improved.
- the user's setting burden can be reduced.
- a wireless network can be easily constructed.
- the setting content for the wireless device that has not performed communication for a certain period is deleted, it can be deleted even if the setting is made by mistake. Further, even if the setting is made by mistake, the setting contents are deleted, so that the security can be improved.
- the setting content is automatically deleted, the convenience for the user can be improved.
- the setting process can be simplified. Moreover, since a simple process is performed, a process can be performed reliably.
- the control unit 56 performs control so as to switch between the communication mode, the preparation mode, and the execution mode.
- the control unit 56 deletes the setting content for the wireless device that is not executing communication even after the setting is once executed.
- the present invention is not limited to this.
- the control unit 56 may execute a combination of the above processes. That is, the control unit 56 performs control so as to switch between the preparation mode and the execution mode when performing a new setting, and once the setting is performed, the setting content for the wireless device that is not performing the communication is deleted.
- the security measures when a new setting is executed and the security measures after the setting is executed can be further improved.
- a single communication system 100 including an in-vehicle camera device 10 and an in-vehicle monitor device 12 is shown.
- the present invention is not limited to this, and for example, the in-vehicle camera device 10 and the in-vehicle monitor device 12 may further execute the following processing in response to a case where a plurality of communication systems 100 exist in the vicinity.
- the preparation mode operation unit 72 transitions to the preparation mode and transmits a preparation mode transition completion signal.
- the preparation mode operation unit 72 transmits a preparation mode transition completion signal when receiving a preparation mode transition instruction signal from another in-vehicle monitor device 12 for a certain period after transition to the preparation mode. That is, the preparation mode operation unit 72 may transmit a preparation mode transition completion signal to the plurality of in-vehicle monitoring devices 12.
- the confirmation unit 42 in the in-vehicle monitor device 12 receives the preparation mode transition completion signal
- the confirmation unit 42 waits for a certain period and also receives a preparation mode transition completion signal from another in-vehicle camera device 10.
- the confirmation unit 42 causes the display unit 30 to display a list of the in-vehicle camera devices 10 that have received the preparation mode transition completion signal.
- the confirmation unit 42 receives an instruction regarding selection of the in-vehicle camera device 10 from the user via the IF unit 34.
- the processing unit 24 transmits a setting request signal with the received in-vehicle camera device 10 as a destination.
- the in-vehicle camera device 10 corresponding to the transmission source of the setting request signal is set as a processing target. According to this modification, even when a plurality of communication systems 100 are present in the vicinity, the settings related to the wireless network can be easily executed.
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Abstract
Description
"Wi-Fi CERTIFIED for Wi-FiProtected Setup:一般家庭およびSOHOにおけるWi-Fiネットワークのユーザ環境を大幅に向上" 、[online]、2007年、Wi-FiAlliance 、全文、[平成19年11月22日検索]、インターネット<URL: http://www.wirelessethernet.org/files/kc/wp_21_Wi-Fi_Protected_Setup_Whitepaper_ja.pdf>
Claims (9)
- 無線ネットワークに関する設定がなされていない他の無線装置から、設定を準備するための準備モードへの移行の要求を受けつける受付部と、
前記受付部において受けつけた要求にしたがう場合に、準備モードへ移行する第1実行部と、
前記第1実行部において準備モードへ移行した場合に、前記他の無線装置からの設定要求を受けつけると、設定を実行するための実行モードへ移行することによって、前記他の無線装置との間で、無線ネットワークに関する設定を実行する第2実行部と、
前記第2実行部において設定を実行した後、通信を実行するための通信モードへ移行することによって、前記他の無線装置との通信を実行する通信部とを備え、
前記第2実行部は、通信モードの場合に、前記他の無線装置からの設定要求を受けつけても、実行モードへの移行を拒否することを特徴とする無線装置。 - 前記第1実行部は、前記受付部において受けつけた要求にしたがわない場合に、通信モードを維持することを特徴とする請求項1に記載の無線装置。
- 前記実行部は、準備モードへの移行の要求を送信した他の無線装置と、設定要求を送信した他の無線装置とが一致する場合に、実行モードへ移行することを特徴とする請求項1または2に記載の無線装置。
- 無線ネットワークに関する設定がなされていない他の無線装置へ、設定を準備するための準備モードへの移行を要求する第1要求部と、
前記第1要求部における要求にしたがって、前記他の無線装置が準備モードへ移行した場合に、前記他の無線装置へ設定を要求する第2要求部と、
前記第2要求部における要求にしたがって、前記他の無線装置が設定を実行するための実行モードへ移行した場合に、前記他の無線装置との間で、無線ネットワークに関する設定を実行する実行部と、
前記実行部において設定を実行した後、前記他の無線装置が通信を実行するための通信モードへ移行した場合に、前記他の無線装置との通信を実行する通信部と、
を備えることを特徴とする無線装置。 - 前記第1要求部は、送信元を特定するための情報を要求に含め、
前記第2要求部は、送信元を特定するための情報を要求に含めることを特徴とする請求項4に記載の無線装置。 - 無線ネットワークに関する設定がなされていない他の無線装置から、設定を準備するための準備モードへの移行の要求を受けつけるステップと、
受けつけた要求にしたがう場合に、準備モードへ移行するステップと、
準備モードへ移行した場合に、前記他の無線装置からの設定要求を受けつけると、設定を実行するための実行モードへ移行することによって、前記他の無線装置との間で、無線ネットワークに関する設定を実行するステップと、
設定を実行した後、通信を実行するための通信モードへ移行することによって、前記他の無線装置との通信を実行するステップとを備え、
前記設定を実行するステップは、通信モードの場合に、前記他の無線装置からの設定要求を受けつけても、実行モードへの移行を拒否することを特徴とする通信方法。 - 無線ネットワークに関する設定がなされていない他の無線装置へ、設定を準備するための準備モードへの移行を要求するステップと、
移行の要求にしたがって、前記他の無線装置が準備モードへ移行した場合に、前記他の無線装置へ設定を要求するステップと、
設定の要求にしたがって、前記他の無線装置が設定を実行するための実行モードへ移行した場合に、前記他の無線装置との間で、無線ネットワークに関する設定を実行するステップと、
設定を実行した後、前記他の無線装置が通信を実行するための通信モードへ移行した場合に、前記他の無線装置との通信を実行するステップと、
を備えることを特徴とする通信方法。 - 無線ネットワークに関する設定がなされていない他の無線装置との間で、無線ネットワークに関する設定を実行するとともに、設定内容を管理する実行部と、
前記実行部において設定を実行した他の無線装置との通信を実行する通信部とを備え、
前記実行部は、前記通信部と一定の期間にわたって通信を実行していない他の無線装置について、設定内容を削除することを特徴とする無線装置。 - 無線ネットワークに関する設定がなされていない他の無線装置との間で、無線ネットワークに関する設定を実行するステップと、
設定内容を管理するステップと、
設定を実行した他の無線装置との通信を実行するステップとを備え、
前記管理するステップは、一定の期間にわたって通信を実行していない他の無線装置について、設定内容を削除することを特徴とする通信方法。
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JP2004215232A (ja) * | 2002-12-19 | 2004-07-29 | Buffalo Inc | 暗号鍵設定システム、アクセスポイント、および、暗号鍵設定方法、認証コード設定システム |
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JP4433999B2 (ja) * | 2004-12-01 | 2010-03-17 | ブラザー工業株式会社 | 無線通信システム、画像処理装置、及び、画像処理装置の制御方法 |
WO2006078562A2 (en) * | 2005-01-19 | 2006-07-27 | Alcatel Lucent | System, node, and method optimizing data connections for packet services |
US20070268506A1 (en) * | 2006-05-19 | 2007-11-22 | Paul Zeldin | Autonomous auto-configuring wireless network device |
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JP2004215232A (ja) * | 2002-12-19 | 2004-07-29 | Buffalo Inc | 暗号鍵設定システム、アクセスポイント、および、暗号鍵設定方法、認証コード設定システム |
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