JP2011205194A - Radio communication system, radio communication method, program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio communication system capable of easily establishing connection with a radio communication terminal even when a radio LAN access point is arranged at a place where light does not reach, or at a place where it is difficult to directly touch and operate the radio LAN access point, or the like.SOLUTION: The radio communication terminal 200 includes: a first storage 210 for registering a predetermined sound password PW; and a terminal controller 220 for authenticating an access point AP and transmitting a registration request including a sound PW when a sound PW included in a received first signal coincides with the sound PW stored in the first storage, and the AP includes; a sound detector 310 for outputting ambient sound as sound information; a second storage 320 for registering a predetermined sound PW; and an AP controller 330 for transmitting a first signal including the sound PW when the sound information received from the sound detector coincides with the sound PW, and authenticating the radio communication terminal when the sound PW included in the received registration request coincides with the sound PW registered in the second storage.

Description

  The present invention relates to a wireless communication system, a wireless communication method, a program, and a recording medium, and in particular, establishes a connection between a wireless communication terminal and an access point while ensuring security, and a wireless communication system, a wireless communication method, a program, and a recording medium. It relates to the medium.

  For example, Patent Literature 1 and Patent Literature 2 disclose a method for easily adding a wireless LAN terminal while preventing leakage of data representing an encryption key.

  In addition, as a method of easily adding a wireless LAN terminal while preventing leakage of data representing an encryption key, WPS (Wi-Fi Protected Setup: registered trademark) or AOSS (registered trademark) (Air station One-Touch Secure System). In both cases, it is possible to authenticate each other and start communication by simply pressing a button without performing complicated settings.

  FIG. 8 shows an example of a configuration diagram of a related art wireless LAN system. In FIG. 8, when the user 1 connects the wireless LAN terminal 2 to the wireless LAN access point 3 using WPS or AOSS, for example, there are the following methods. In the first method, the wireless LAN terminal 2 generates an authentication key (PIN code) set for each wireless LAN access point 3, and the user 1 directly sends the generated authentication key to the wireless LAN access point 3. input. In the second method, an authentication key is set on the wireless LAN terminal 2 side at the same time when the user 1 presses the button 4 installed on the wireless LAN access point 3. Further, in the third method, an authentication key is transferred from the wireless LAN terminal 2 to the wireless LAN access point 3 using light of an LED (Light Emitting Diode) in AOSS, and the raw authentication key is transferred to the wireless LAN access point. Type in 3.

JP 2005-175524 A JP 2006-309609 A

  In the case of the method in which the user 1 directly inputs the authentication key to the wireless LAN access point 3 and the method in which the user 1 presses the button 4 of the wireless LAN access point 3, both are operated by directly touching the wireless LAN access point 3. It is necessary. For this reason, for example, when the access point 3 of the wireless LAN is in a location that is out of reach such as a ceiling or furniture gap, it is difficult to input the authentication key or press the button 4, and settings using WPS or AOSS are required. I can't do it. In the case of a method using LED light, the wireless LAN access point 3 needs to be arranged so as to be able to receive LED light from the wireless LAN terminal. For example, the wireless LAN access point 3 cannot be used when it is placed in a place where it is difficult to receive LED light such as a ceiling or furniture gap.

  In view of the above problems, the object of the present invention is to maintain high security even when a wireless LAN access point is placed in a place where light does not reach or where it is difficult to directly touch and operate. Another object of the present invention is to provide a wireless communication system, a wireless communication method, a program, and a recording medium that can easily establish a new connection between a wireless communication terminal and a wireless LAN access point.

  To achieve the above object, a wireless communication system according to the present invention is a wireless communication system including a communication terminal and an access point that perform wireless communication within a communicable area, and the wireless communication terminal has a predetermined sound password. When the registered first storage means and the sound password included in the received first signal match the sound password stored in the first storage means, the access point is authenticated and the sound password is Terminal control means for generating and transmitting an included registration request, and the access point detects a surrounding sound and outputs it as sound information to the AP control means, and a predetermined sound password is registered. If the sound information received from the second storage means and the sound detection means matches the sound password registered in the second storage means, the sound password is included. When the first signal is generated and transmitted and the registration request is received, the sound password included in the registration request is compared with the sound password registered in the second storage means, and they match. And an AP control means for authenticating the wireless communication terminal.

  In order to achieve the above object, a wireless communication method according to the present invention is a wireless communication method using a wireless communication terminal and an access point that perform wireless communication in a communicable area, and the wireless communication terminal uses a predetermined sound password. The access point includes a second storage means in which a predetermined sound password is registered, detects surrounding sounds and outputs them as sound information, and the received sound information is stored in the first storage means. If it matches the sound password registered in the storage means 2, the first signal including the sound password is generated and transmitted, and the sound password included in the received first signal is stored in the first memory. If it matches the sound password stored in the means, the access point is authenticated and a registration request including the sound password is generated and sent, and is included in the received registration request. If the sound password matches the sound password registered in the second storage means and to authenticate the wireless communication terminal.

  To achieve the above object, a program according to the present invention performs wireless communication within a communicable area, and includes a wireless communication terminal having a first storage means for registering a predetermined sound password and a predetermined sound password registered. A program that can be executed by the computer of the access point having the second storage means, the function of detecting surrounding sounds and outputting them as sound information, and the received sound information in the second storage means When it matches the registered sound password, the first signal including the sound password is generated and transmitted, and the sound password included in the received first signal is stored in the first storage means. If it matches the registered sound password, the access point is authenticated and a registration request including the sound password is generated and sent. In rare cases it has sound password matches the second sound password registered in the storage means, to execute the function of authenticating the wireless communication terminal, to the computer.

  In order to achieve the above object, a recording medium according to the present invention includes a wireless communication terminal including a first storage unit that performs wireless communication in a communicable area and that stores a predetermined sound password, and a predetermined sound password. A procedure for detecting ambient sounds and outputting them as sound information to the computer of the access point having the registered second storage means, and a sound password in which the received sound information is registered in the second storage means The first password including the sound password is generated and transmitted, and the sound password included in the received first signal is stored in the first storage means; If they match, the procedure for authenticating the access point and generating and transmitting a registration request including the sound password and the sound password included in the received registration request are the second If a match with a registered sound that is being password storage means, for recording a control program for executing a step of authenticating the wireless communication terminal, a computer readable recording medium.

  According to the present invention, even when the wireless LAN access point is arranged in a place where light does not reach or where it is difficult to directly touch and operate, the wireless communication terminal and the wireless communication terminal are secured with high security. A new connection with the wireless LAN access point can be easily established.

It is a block diagram which shows an example of a structure of the radio | wireless communications system which concerns on the 1st Embodiment of this invention. It is a flowchart which shows an example of the procedure until it registers a radio | wireless communication terminal newly in the radio | wireless communications system which concerns on the 2nd Embodiment of this invention. It is a block diagram which shows an example of a structure of the radio | wireless communications system which concerns on the 3rd Embodiment of this invention. It is a block diagram which shows an example of a structure of the radio | wireless communications system which concerns on the 3rd Embodiment of this invention. It is a flowchart which shows an example of the procedure until it registers a radio | wireless communication terminal newly in the radio | wireless communications system which concerns on the 3rd Embodiment of this invention. It is a block diagram which shows an example of a structure of the radio | wireless communications system which concerns on the 4th Embodiment of this invention. It is a flowchart which shows an example of the procedure until it registers a radio | wireless communication terminal newly in the radio | wireless communications system which concerns on the 4th Embodiment of this invention. It is a block diagram which shows an example of a structure of the radio | wireless communications system of the related technology of this invention.

(First embodiment)
A radio communication system according to the first embodiment will be described. FIG. 1 shows an example of a configuration diagram of a wireless communication system according to the present embodiment. In FIG. 1, a wireless communication system 100 according to the present embodiment includes a wireless communication terminal 200 and an access point 300.

  The wireless communication terminal 200 includes a storage unit 210 and a terminal control unit 220, and performs wireless communication within a communicable area. A predetermined sound password is registered in the storage unit 210. When the terminal control unit 220 receives the first signal, the terminal control unit 220 compares the sound password included in the first signal with the sound password registered in the storage unit 210. Authentication is performed and a registration request including the sound password is generated and transmitted. The storage means 210 corresponds to the first storage means in the claims.

  The access point 300 includes a sound detection unit 310, a memory 320, and an AP control unit 330, and performs wireless communication within a communicable area. The sound detection unit 310 detects and analyzes surrounding sounds, and outputs the analysis result to the AP control unit 330 as sound information. A predetermined sound password is registered in the memory 320. The AP control unit 330 compares the sound information received from the sound detection unit 310 with the sound password registered in the memory 320, and if they match, generates and transmits a first signal including the sound password. Further, when receiving the registration request, the AP control unit 330 compares the sound password included in the registration request with the sound password stored in the memory 320, and authenticates the wireless communication terminal 200 if they match. . The memory 320 corresponds to the second storage means in the claims.

Since the wireless communication terminal 200 and the access point 300 authenticate each other through a predetermined sound password, the access point 300 is disposed in a place where light does not reach or where it is difficult to directly touch and operate. Even in this case, a new connection between the wireless communication terminal 200 and the access point 300 can be easily established with high security secured.

(Second Embodiment)
A second embodiment will be described. The configuration of the wireless communication system according to this embodiment is the same as that of FIG. 1 described in the first embodiment, and includes a wireless communication terminal 200 and an access point 300.

  The wireless communication terminal 200 includes a storage unit 210 in which a predetermined sound password is registered, and a terminal control unit 220 that authenticates the access point 300 and generates and transmits a registration request including the sound password. In the present embodiment, the terminal control means 220 further transmits the registration request including its own ID. Further, when the terminal control unit 220 receives the second signal, the terminal control unit 220 extracts a connection key from the second signal and connects to the access point 300 using the extracted connection key.

  On the other hand, the access point 300 detects a surrounding sound and outputs sound information, a memory 320 in which a predetermined sound password is registered, and a sound password if the sound information matches the sound password. When the sound password included in the received registration request matches the sound password stored in the memory 320, the AP control means for authenticating the wireless communication terminal 200 is generated and transmitted. 330 is provided. In the present embodiment, the memory 320 further registers IDs of a plurality of wireless communication terminals that are permitted to connect. If the wireless communication terminal 200 can be authenticated, the AP control means newly registers the ID included in the registration request in the memory 320 as the ID of the wireless communication terminal permitted to connect, and is necessary for starting communication. The second signal including the correct connection key is transmitted to the wireless communication terminal having the ID of the wireless communication terminal permitted to connect, which is registered in the memory 320.

  Here, the first signal is a Beacon radio wave that is output without specifying a destination and does not have a high security level. On the other hand, the second signal is a Beacon radio wave with a high security level that is output to a terminal having an ID of a wireless communication terminal that has been permitted to connect, registered in the memory 320.

  Next, a procedure when the user newly connects the wireless communication terminal 200 to the access point 300 within the communicable area will be described. FIG. 2 shows a procedure until the wireless communication terminal 200 establishes a connection with the access point 300.

  In FIG. 2, when a wireless communication terminal 200 is newly connected to the access point 300, the user registers a sound password corresponding to the access point 300 of the connection destination in the wireless communication terminal 200, and outputs a sound corresponding to the sound password. appear. Here, as the sound to be generated, in addition to the sound emitted by the user, a sound emitted using some tool, a speaker sound emitted from the wireless communication terminal 200, and the like can be applied.

  The sound detection means 310 of the access point 300 detects and analyzes surrounding sounds and outputs the analysis results to the AP control means 330 as sound information (S101). The AP control unit 330 compares the sound information received from the sound detection unit 310 with the sound password registered in the memory 320 (S102), and if they match (YES in S102), the first control including the sound password is performed. A signal is generated and transmitted (S103).

  When receiving the first signal (S104), the terminal control means 220 of the wireless communication terminal 200 extracts the sound password from the first signal (S105), and is registered in the extracted sound password and storage means 210. The sound password is compared (S106). If the sound passwords match (YES in S106), the terminal control unit 220 generates and transmits a registration request including the ID of the own device and the sound password (S107).

  When receiving the registration request (S108), the AP control means 330 of the access point 300 extracts the sound password and ID from the registration request (S109). The AP control means 330 compares the extracted sound password with the sound password registered in the memory 320 (S110), and if they match (YES in S110), the ID extracted from the registration request is a plurality of IDs permitted to be connected. Is newly registered in the memory 320 as the ID of the wireless communication terminal (S111). Further, the AP control unit 330 generates a second signal including a connection key necessary for starting communication, and transmits the second signal to the wireless communication terminal having the ID registered in the memory 320. (S112).

  When receiving the second signal (S113), the terminal control means 220 of the wireless communication terminal 200 extracts the connection key from the second signal (S114), and uses the connection key to communicate with the access point 300. A communication connection is established (S115).

  By establishing the communication connection, the wireless communication terminal 200 can start wireless communication with the access point 300 in a state where security is ensured.

As described above, in the present embodiment, the wireless communication terminal 200 and the access point 300 authenticate each other with the sound password via the first signal, triggered by the fact that a predetermined sound is emitted. When the authentication is successful, the access point 300 transmits a connection key necessary for starting communication to the wireless communication terminal 200 via the second signal, and the connection between the wireless communication terminal 200 and the access point 300 is established. Is done. By using the sound signal for recognizing both the first signal and the second signal containing the connection key for starting connection, the LAN access point 300 can touch the place where light does not reach or directly touch it. Even when placed in a place where it is difficult to operate, a new connection between the wireless communication terminal 200 and the access point 300 can be automatically and easily established with high security secured. it can.

(Third embodiment)
A third embodiment will be described. FIG. 3 shows an example of a configuration diagram of the wireless LAN system according to the present embodiment, and FIG. 4 shows an example of a block diagram. In FIG. 3, in the wireless LAN system 10 according to the present embodiment, the wireless LAN terminal 20 and the wireless LAN access point 30 are located in the communicable area AR1.

  In FIG. 4, the wireless LAN terminal 20 includes a voice detection unit 21, a wireless communication unit 22, a display unit 23, a storage unit 24, and a control unit 25.

  The voice detection unit 21 observes the level of the ambient sound. If the level of the ambient sound is larger than a predetermined threshold, the voice detection unit 21 analyzes the observed ambient sound and outputs the analyzed voice information to the control unit 25.

  The wireless communication unit 22 performs wireless communication with terminals in the communicable area AR1.

  The display unit 23 is a liquid crystal screen or the like on which various types of information are displayed. In the present embodiment, the display unit 23 displays a notification indicating that the voice has been received when the voice information received from the voice detection unit 21 matches the keyword registered in the storage unit 24.

  In the storage unit 24, an encryption key corresponding to the connection destination wireless LAN access point 30 and a keyword related to voice are registered.

  The control unit 25 compares the voice information received from the voice detection unit 21 with the keyword registered in the storage unit 24. If they match, the control unit 25 starts scanning the Beacon radio wave B1 using the wireless communication unit 22. When the Beacon radio wave B1 is received, an SSID (Service Set IDentifier) for exchanging voice information is extracted from the Beacon radio wave B1, and authentication is performed using a keyword registered in the storage unit 24. If the authentication is successful, a registration request including the ID of the own device and the SSID for voice information exchange is generated and transmitted using the wireless communication unit 22. Further, when receiving the Beacon radio wave B2, the control unit 25 extracts the connection start SSID from the Beacon radio wave B2, and generates and transmits a connection request including the extracted connection start SSID. The Beacon radio waves B1 and B2, the voice information exchange SSID, and the connection start SSID will be described later.

  Here, a personal computer or the like can be applied as the wireless LAN terminal 20.

  In FIG. 4, the wireless LAN access point 30 includes a voice detection unit 31, a wireless communication unit 32, a speaker 33, a ROM (Read Only Memory) 34, a RAM (Random Access Memory) 35, and a control unit 36.

  The voice detection unit 31 observes the level of the ambient sound. If the level of the ambient sound is greater than a predetermined threshold, the voice detection unit 31 analyzes the observed ambient sound and outputs it to the control unit 36 as voice information.

  The wireless communication unit 32 performs wireless communication with terminals in the communicable area AR1. The wireless communication unit 32 has a multi-SSID function that transmits a plurality of types of Beacon radio waves having different security levels. In the present embodiment, the wireless communication unit 32 includes a Beacon radio wave B1 having a low security level that does not specify a destination, a Beacon radio wave B2 having a medium security level addressed to a terminal having an ID registered in the RAM 35, and a ROM 34. Can transmit a Beacon radio wave B3 having a high security level addressed to the terminal having the ID registered in. Further, in the present embodiment, the wireless communication unit 32 uses a wireless SSID stealth function, which is a function of stopping a beacon signal transmitted to the periphery for notification when the Beacon radio wave B1 is transmitted. Here, the Beacon radio wave B1 and the Beacon radio wave B2 are transmitted only in the registration mode, and the Beacon radio wave B3 is transmitted in the communication mode. The Beacon radio wave B1 corresponds to the first signal in the claims, and the Beacon radio wave B2 corresponds to the second signal in the claims.

  The speaker 33 outputs a message indicating that the voice has been received when the voice information received from the voice detection unit 31 matches the keyword registered in the storage unit 34.

  The ROM 34 is a memory that can only perform additional registration of information. In the present embodiment, a predetermined encryption key, a keyword related to voice, and IDs of a plurality of wireless LAN terminals permitted to be connected are registered in the ROM 34 in advance.

  The RAM 35 is a memory that can register and delete information. In the present embodiment, the RAM 35 temporarily stores the ID extracted from the connection request and the connection start SSID generated when the connection request is received.

  The control unit 36 compares the voice information received from the voice detection unit 31 with the keyword registered in the ROM 34. If they match, the control unit 36 switches from the communication mode to the registration mode, and the Beacon radio wave including the SSID for voice information exchange Send B1. Further, when receiving a registration request, the control unit 36 extracts the voice information exchange SSID and ID from the registration request. If the extracted voice information exchange SSID can be authenticated, the extracted ID is stored in the RAM 35, and the Beacon radio wave B2 including the connection start SSID is addressed to the wireless communication terminal having the ID registered in the RAM 34. send. Further, when receiving the connection request, the control unit 36 extracts the connection start SSID from the connection request, and when the connection start SSID can be authenticated, moves the transmission source ID from the RAM 35 to the ROM 34, and Switch from registration mode to communication mode.

  The wireless LAN terminal 20 ID and voice information exchange SSID included in the registration request, the connection start SSID included in the connection request, the voice information exchange SSID included in the Beacon radio wave B1, and the connection start included in the Beacon radio B2 All SSIDs are transmitted and received in a state where they are encrypted using a predetermined encryption key.

  Here, the Beacon radio wave B1 is a Beacon radio wave obtained by encrypting an SSID (voice information exchange SSID) decided in advance for exchanging voice information using a predetermined encryption key. The Beacon radio wave B1 is transmitted without specifying the destination. On the other hand, the Beacon radio wave B2 is a Beacon radio wave obtained by encrypting a randomly generated temporary SSID (connection start SSID) for starting data communication using a predetermined encryption key. The Beacon radio wave B2 is transmitted to a terminal having an ID registered in the RAM 35.

  Next, a procedure for newly connecting the wireless LAN terminal 20 to the wireless LAN access point 30 in the communicable area AR1 will be described with reference to FIG. FIG. 5 is a flowchart showing a procedure until the wireless LAN terminal 20 newly connects to the wireless LAN access point 30.

  In FIG. 5, the user sets a specific encryption key and keyword of the connection destination wireless LAN access point 30 to the wireless LAN terminal 20 newly connected to the wireless LAN access point 30, and then, for example, a predetermined voice To emit.

  The wireless LAN terminal 20 stores the set encryption key and keyword in the storage unit 24 (S201). When the sound detection unit 21 of the wireless LAN terminal 20 observes a sound larger than a predetermined threshold, the sound detection unit 21 analyzes the ambient sound and outputs it as sound information to the control unit 25. In the present embodiment, the voice detection unit 21 outputs voice information related to the user's voice to the control unit 25 when the voice uttered by the user is larger than a predetermined threshold. The control unit 25 compares the voice information received from the voice detection unit 21 with the keyword registered in the storage unit 24 (S202). If they match (YES in S202), the control unit 25 receives the voice on the display unit 23. A notification indicating this is displayed (S203), and scanning of the Beacon radio wave B1 is started using the wireless communication unit 22 (S204). In addition, after a user utters a predetermined sound, when a notification indicating that the sound has been received is not displayed on the display unit 23, the user determines that the voice recognition has failed and utters the predetermined sound again.

  On the other hand, when the sound detection unit 31 of the wireless LAN access point 30 observes a sound larger than a predetermined threshold, the sound detection unit 31 analyzes the ambient sound and outputs the sound as sound information to the control unit 36. In the present embodiment, the voice detection unit 31 observes a voice uttered by a user larger than the predetermined threshold described in S202, and outputs voice information related to the user's voice to the control unit 36. The control unit 36 compares the voice information received from the voice detection unit 31 with the keyword registered in the ROM 34 (S205), and if they match (YES in S205), a message indicating that the voice has been received from the speaker 33. A sound is output (S206). Thereafter, the communication mode is switched to the registration mode (S207), and each function of the wireless LAN access point 30 is started with predetermined security. Further, the control unit 36 encrypts the voice information exchange SSID corresponding to the keyword by using the encryption key registered in the ROM 34, and generates the Beacon radio wave B1 including the encrypted voice information exchange SSID, Transmission is performed using the wireless communication unit 32 (S208). In the present embodiment, the wireless SSID stealth function is used for transmitting the Beacon radio wave B1. When the user does not output a message sound indicating that the sound has been received from the speaker 33 after the predetermined sound is generated, the user determines that the voice recognition has failed, and again outputs the predetermined sound.

  When receiving the Beacon radio wave B1 transmitted from the wireless LAN access point 30 by the Scan (S209), the wireless LAN terminal 20 stops scanning the Beacon radio wave B1 using the radio communication unit 22 (S210), and the storage unit The SSID for voice information exchange is extracted from the Beacon radio wave B1 using the encryption key registered in 24 (S211). The wireless LAN terminal 21 authenticates the extracted voice information exchange SSID using the keyword registered in the storage unit 24 (S212), and if it can be authenticated (YES in S212), encrypts it using the encryption key. The registration request including the ID of the device itself and the SSID for voice information exchange is generated and transmitted (S213). In S212, if authentication cannot be performed (NO in S212), scanning of the Beacon radio wave B1 is started again, and S209 to S212 are repeated until authentication is possible.

  When the wireless LAN access point 30 receives the registration request (S214), the wireless LAN access point 30 extracts the voice information exchange SSID and ID from the registration request using the encryption key, and if the extracted voice information exchange SSID can be authenticated ( (YES in S215), the extracted ID is stored in the RAM 35 (S216). Further, the wireless LAN access point 30 randomly generates a temporary connection start SSID and stores it in the RAM 35 (S217), encrypts the generated connection start SSID using an encryption key, and encrypts the encrypted connection start SSID. The Beacon radio wave B2 including the connection start SSID is generated and transmitted to the terminal having the ID stored in the RAM 35 (S218).

  On the other hand, when receiving the Beacon radio wave B2 (S219), the wireless LAN terminal 20 extracts the connection start SSID from the Beacon radio B2 using the encryption key (S220), and the connection request including the extracted connection start SSID. Is transmitted using the wireless communication unit 22 (S221). Further, the control unit 24 deletes the encryption key and the keyword related to the newly connected wireless LAN access point 30 stored in the storage unit 24 (S222).

  When receiving the connection request (S223), the wireless LAN access point 30 extracts the connection start SSID from the connection request using the encryption key, and when the extracted connection start SSID can be authenticated (YES in S224), The connection request transmission source ID is moved from the RAM 35 to the ROM 34 (S225), the connection start SSID is deleted from the RAM 35 (S226), and the registration mode is switched to the communication mode (S227).

  By registering the ID of the wireless LAN terminal 20 in the ROM 34 of the wireless LAN access point 30 as the ID of the wireless LAN terminal permitted to connect, the wireless LAN terminal 20 and the wireless LAN access point 30 have a high security level. Data communication using the radio wave B3 can be started.

  As described above, in the present embodiment, the wireless LAN terminal 21 and the wireless LAN access point 30 authenticate each other via the voice information exchange SSID using the voice uttered by the user as a trigger. Then, a connection is established through a temporary connection start SSID that is randomly generated when authentication is completed. Therefore, it is possible to easily establish a new connection between the wireless LAN terminal 21 and the wireless LAN access point 30 without performing a direct operation on the wireless LAN access point 30 in a state where high security is ensured. it can.

  Further, the wireless LAN terminal 21 and the wireless LAN access point 30 can further enhance security by transmitting and receiving various requests and various SSIDs in a state where the wireless LAN terminal 21 and the wireless LAN access point 30 are encrypted using a predetermined encryption key. Here, since different encryption keys are set for each wireless LAN access point, even when there are a plurality of wireless LAN access points, it is possible to reliably establish a connection only with a desired wireless LAN access point.

Furthermore, since the wireless LAN access point 30 includes two memories, the ROM 34 and the RAM 35, the ID used in the communication mode and the ID used in the registration mode can be managed separately. Accordingly, high security management can be performed in the communication mode, and a new connection can be easily established in the registration mode.

(Fourth embodiment)
A fourth embodiment will be described. In the present embodiment, a plurality of wireless LAN terminals are simultaneously registered in the wireless LAN access point. FIG. 6 shows an example of a configuration diagram of a wireless communication system according to the present embodiment.

  In FIG. 6, in the wireless communication system 10B according to this embodiment, N wireless LAN terminals 201 to 20N and one wireless LAN access point 30B are located in the communicable area AR1. The block diagram of each of the wireless LAN terminals 201 to 20N and the wireless LAN access point 30B is the same as that shown in FIG. 4 of the third embodiment, and detailed description thereof is omitted.

  Next, a procedure for registering a plurality of wireless LAN terminals 201 to 20N in the wireless LAN access point 30B will be described. The procedure until the wireless LAN access point 30B starts transmitting the Beacon radio wave B1 is substantially the same as that in the third embodiment (S201 to S208 in FIG. 5 described in the third embodiment). In the present embodiment, the same encryption key and keyword unique to the wireless LAN access point 30B are stored in the storage unit 24 of the wireless LAN terminals 201 to 20N. Then, when the user utters a predetermined voice, each of the wireless LAN terminals 201 to 20N compares the voice information received from the voice detection unit 21 with the keyword registered in the storage unit 24, and if they match, Scanning of the Beacon radio wave B1 is started. On the other hand, when the voice information received from the voice detection unit 31 matches the keyword registered in the ROM 34, the wireless LAN access point 30 switches to the registration mode and transmits the Beacon radio wave B1.

  FIG. 7 shows a flow after the wireless LAN access point 30B starts transmission of the Beacon radio wave B1, and the procedure after the start of transmission of the Beacon radio wave B1 (S301 in FIG. 7) will be described with reference to FIG.

  In FIG. 7, the wireless LAN access point 30B starts transmitting the Beacon radio wave B1 including the voice information exchange SSID (S301). In this embodiment, the wireless LAN access point 30B continues to periodically transmit the Beacon radio wave B1 from the wireless communication unit 32 until the registration request is not received for a predetermined time. Also in this embodiment, the wireless LAN access point 30B uses the wireless SSID stealth function for transmitting the Beacon radio wave B1. Instead of using the wireless SSID stealth function, a WEP (Wired Equivalent Privacy) key for authentication is set in advance in the wireless LAN access point 30B and the wireless LAN terminals 201 to 20N, and the WEP is transmitted and received for the Beacon radio wave B1. A key can also be used.

  On the other hand, when receiving the Beacon radio wave B1 (S302), the wireless LAN terminals 201 to 20N authenticate the voice information exchange SSID included in the Beacon radio wave B1 (S303), and encrypt the self-information using the encryption key. A registration request including the machine ID and the SSID for voice information exchange is generated and transmitted (S304).

  When the wireless LAN access point 30B receives the registration request (S305), the wireless LAN access point 30B counts the number of registration requests received and stores it in the RAM 35 as the number N of unprocessed terminals (S306). Further, the wireless LAN access point 30B authenticates the voice information exchange SSID included in the received N registration requests (S307), extracts the ID extracted from the registration request, and stores it in the RAM 35 (S308). Further, a connection start SSID is generated and stored in the RAM 35 (S309). Thereafter, the wireless LAN access point 30B encrypts the connection start SSID using an encryption key, generates a Beacon radio wave B2 including the encrypted connection start SSID, and addresses the terminal having the ID stored in the RAM 35. (S310).

  When receiving the Beacon radio wave B2 (S311), each of the wireless LAN terminals 201 to 20N extracts the connection start SSID from the Beacon radio wave B2 using the encryption key (S312), and includes the extracted connection start SSID. A connection request is generated and transmitted (S313). Further, each of the wireless LAN terminals 201 to 20N deletes the encryption key and the keyword stored in the storage unit 24 (S314).

  When the wireless LAN access point 30B receives the connection request (S315), the wireless LAN access point 30B extracts the connection start SSID from the received connection request, and when the extracted connection start SSID can be authenticated (S316), the source ID Is moved from the RAM 35 to the ROM 34 (S317). Further, after subtracting 1 from the number of unprocessed terminals stored in the RAM 35 to “N−1” (S318), it is confirmed whether the number of unprocessed terminals is “0” (S319). When the number of unprocessed terminals is not “0” (NO in S319), the wireless LAN access point 30B repeats S315 to S319. On the other hand, when the number of unprocessed terminals is “0” (YES in S319), the connection start SSID is deleted from the RAM 35 (S320), and the registration mode is switched to the communication mode (S321).

  As described above, in this embodiment, by using sounds that can be simultaneously received by the plurality of wireless LAN terminals 201 to 20N for authentication, the plurality of wireless LAN terminals 201 to 20N are automatically activated by one sounding. Can newly connect to the wireless LAN access point 30B.

  In addition, since the connection start SSID necessary for new connection is generated for each sound generation and deleted at the end of the registration mode, only the desired wireless LAN terminal can be connected to the wireless LAN with high security. You can connect to an access point.

Here, the above-described wireless communication method is also realized by a computer reading a program by a control unit for controlling a wireless communication terminal and a wireless LAN terminal or a computer equipped with an access point and a control unit for controlling a wireless LAN access point. it can. Each process of the wireless communication method is stored in a computer-readable recording medium in the form of a program, and the computer reads and executes the program. Here, the computer-readable recording medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM (Compact Disk-Read Only Memory), a DVD-ROM (Digital Versatile Disk-Read Only Memory), a semiconductor storage unit, and the like. .

DESCRIPTION OF SYMBOLS 1 User 2 Wireless LAN terminal 3 Wireless LAN access point 4 Button 10, 10B Wireless communication system 20 Wireless LAN terminal 21 Voice detection part 22 Wireless communication part 23 Display part 24 Storage part 25 Control part 30, 30B Wireless LAN access point 31 Voice detection Unit 32 Wireless communication unit 33 Speaker 34 ROM
35 RAM
36 control unit 100 wireless communication system 200 wireless communication terminal 210 storage means 220 terminal control means 300 access point 310 sound detection means 320 memory 330 AP control means

Claims (10)

A wireless communication system including a communication terminal and an access point that perform wireless communication in a communicable area,
The wireless communication terminal is
First storage means for registering a predetermined sound password;
If the sound password included in the received first signal matches the sound password stored in the first storage means, the access point is authenticated and a registration request including the sound password is generated. And terminal control means for transmitting
The access point is
Sound detection means for detecting ambient sounds and outputting the sound information to the AP control means;
Second storage means in which the predetermined sound password is registered;
When the sound information received from the sound detection means matches the sound password registered in the second storage means, a first signal including the sound password is generated and transmitted, and the registration request is received If so, the sound password included in the registration request is compared with the sound password registered in the second storage means, and if they match, AP control means for authenticating the wireless communication terminal is provided. ,
A wireless communication system.
The terminal control means further includes its own ID in the registration request,
In the second storage means, IDs of a plurality of wireless communication terminals permitted to connect are registered,
When the AP control unit receives the registration request, the AP control unit registers the ID included in the registration request in the second storage unit.
The wireless communication system according to claim 1.
When the AP control means receives the registration request, the AP control means generates and transmits a second signal including a randomly generated temporary connection key,
The terminal control means extracts a connection key included in the received second signal, and connects to the access point using the extracted connection key;
The wireless communication system according to claim 2.
A predetermined encryption key is registered in the first storage means and the second storage means,
The wireless communication system according to claim 3, wherein the sound password and the connection key are included in the first signal and the second signal in a state where the sound password and the connection key are encrypted using the encryption key.
The terminal control means generates and transmits a connection request including the extracted connection key;
The second storage means includes a ROM and a RAM, and a plurality of IDs of wireless communication terminals permitted to connect to the ROM are registered,
The AP control means registers the ID included in the connection request in the RAM when the sound password and the sound password match, and receives the connection request from the RAM to the ROM when receiving the connection request. The wireless communication system according to claim 2, wherein the wireless communication system moves.
When the sound information received from the sound detection means matches the sound password registered in the second storage means, the AP control means switches from the communication mode to the registration mode, and receives the connection request. The wireless communication system according to claim 5, wherein the registration mode is switched to the communication mode.
The AP control means, when receiving the registration request, counts the number of registration requests received and holds the number N of unprocessed terminals, and when receiving the connection request for the number N of unprocessed terminals held, The wireless communication system according to claim 6, wherein the registration mode is switched to the communication mode.
A wireless communication method using a wireless communication terminal and an access point that perform wireless communication in a communicable area,
The wireless communication terminal includes first storage means in which a predetermined sound password is registered, and the access point includes second storage means in which the predetermined sound password is registered,
Detect ambient sounds and output as sound information,
If the received sound information matches the sound password registered in the second storage means, a first signal including the sound password is generated and transmitted,
If the sound password included in the received first signal matches the sound password stored in the first storage means, the access point is authenticated and a registration request including the sound password is generated. Send
Authenticating the wireless communication terminal when the sound password included in the received registration request matches the sound password registered in the second storage means;
A wireless communication method.
A wireless communication terminal having a first storage means for registering a predetermined sound password, and an access point having a second storage means for registering the predetermined sound password, for performing wireless communication in a communicable area A computer executable program,
A function to detect ambient sound and output it as sound information,
A function of generating and transmitting a first signal including the sound password when the received sound information matches the sound password registered in the second storage means;
If the sound password included in the received first signal matches the sound password stored in the first storage means, the access point is authenticated and a registration request including the sound password is generated. And the function to send
A function for authenticating the wireless communication terminal when the sound password included in the received registration request matches the sound password registered in the second storage means;
A control program for causing the computer to execute.
A wireless communication terminal having a first storage means for registering a predetermined sound password, and an access point having a second storage means for registering the predetermined sound password, for performing wireless communication in a communicable area On the computer
A procedure for detecting surrounding sounds and outputting them as sound information,
A procedure for generating and transmitting a first signal including the sound password when the received sound information matches a sound password registered in the second storage means;
If the sound password included in the received first signal matches the sound password stored in the first storage means, the access point is authenticated and a registration request including the sound password is generated. And the procedure to send
A procedure for authenticating the wireless communication terminal if the sound password included in the received registration request matches the sound password registered in the second storage means;
The computer-readable recording medium which recorded the control program for performing this.

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