JP5436345B2 - Wireless LAN setting method and system using portable terminal - Google Patents

Description

  The present invention relates to a wireless LAN setting method and system for performing wireless LAN connection setting and disconnection setting on a wireless LAN compatible digital device using a mobile terminal such as a mobile phone, a PDA, or a smartphone.

  In recent years, wireless LAN has been standardized in various digital devices such as PCs, mobile phones and portable game machines. In addition, needs for in-home LAN environments are diversifying, and there is a need to provide FMC (Fixed Mobile Convergence) services by upgrading to next-generation wireless LANs and linking with LTE (Long Term Evolution).

When a digital device attempts to communicate with another digital device via an access point, the IEEE (Institute of Electrical and Electronic Engineers) 802.11 wireless communication system is called an association between the access point and the digital device. It is prescribed that a predetermined procedure is performed to allow the access point to identify the presence of the digital device. An identifier (network name) called SSID (Service Set Identifier) is used to identify an access point that performs this association. When a user of a digital device selects an access point to be associated with, it is necessary to set the same SSID on both the access point and the digital device. In order for a wireless communication user to perform secure communication while ensuring security, it is generally necessary to set a wireless LAN connection by the operation procedure shown in FIG. 8 and the following.

(1) Display the setting screen from the normal screen.
(2) Select the network setting from the setting screen.
(3) Search for the presence of access points (SSIDs) in the vicinity.
(4) Select a specific SSID from among the SSIDs listed based on the search result.
(5) Enter the encryption key (WEP key, etc.) corresponding to the selected SSID.

Non-Patent Document 1 discloses a method for establishing an association between a digital device and an access point according to the procedure shown in FIG. 9 and the following in the IEEE802.11 standard.

  (R1) The digital device searches for the presence of the SSID through the probe request message.

  (R2) The access point that has received the probe request returns a probe response. The message includes communication parameters such as SSID, encryption method, and authentication method.

  (R3) The digital device attempts an authentication request to the access point.

  (R4) The access point determines whether to authenticate the digital device using a predetermined algorithm, and transmits the result to the digital device. Generally, authentication is performed using the MAC address of a digital device as an identifier.

  (R5) Upon confirming that the digital device has been authenticated by the access point, the digital device transmits an association (connection) request to the access point. This message includes information such as the corresponding SSID, support rate, polling use necessity, and the like.

  (R6) If the access point is an authenticated MAC address and it can be confirmed that all the information included in the association request message of (R5) corresponds to itself, it transmits an association response. At this time, an association identifier is assigned to logically identify the digital device to which the buffered frame is to be delivered to the access point.

(R7) After a series of operations, the digital device can transmit a data frame.

  However, expert knowledge is required to perform the connection setting procedure as described above without delay, and it is difficult for an unfamiliar general user to complete the connection setting without fail in a short time. In order to solve such a technical problem, Patent Document 1 describes the connection setting procedure described with reference to FIG. 8 as follows: button operation on the digital device side and button operation on the access point side as follows. A simple connection setting method that can be completed by executing the above and the like almost simultaneously is disclosed.

(a) A network for setting communication parameters is constructed using the SSID for setting communication parameters stored in advance in both the access point and the digital device.
(b) The access point enters the communication parameter setting mode when the button is pressed, and the digital device detects the access point using the SSID and participates in the network when the button is pressed.
(c) The access point automatically generates communication parameters used for normal data communication and sends them to digital devices using the network for setting communication parameters
(d) The digital device resets the received communication parameter to itself.

  Such an easy connection setting method exists in addition to Patent Document 1, and each communication parameter setting method is different. Therefore, when a digital device supports a plurality of easy connection setting methods, the user can select any simple connection setting method. It is necessary to select whether to set by the connection setting method. It has been difficult for an unfamiliar general user to grasp the simple connection setting method supported by the access point and to select uniquely from a plurality of easy connection setting methods.

  Therefore, Patent Document 2 proposes a method of associating each simple connection setting method with each SSID. Specifically, the digital device confirms the SSID included in the beacon and probe response, and automatically executes easy connection settings associated with the SSID, allowing the user to select from multiple easy connection setting methods. It is possible to eliminate the procedure to do.

  Further, the complicated setting operation is not limited to the connection setting. Similarly, when the wireless LAN disconnection is set (disconnected from the wireless LAN), the user operates the digital device as shown in FIG. 10 and the following. It is necessary to delete the setting contents (communication parameters) through such a complicated disconnection procedure.

(1) Display the setting screen from the normal screen.
(2) Display the network setting screen from the setting screen.
(3) Select the desired SSID from the SSID list.
(4) Execute erase operation.

Matthew Gast, "802.11 Wireless Network Management 2nd Edition," O'Reilly Japan, November 2006.

JP 2004-215232 JP JP 2007-143117 A

  The prior art described above has the following technical problems.

  (1) Access points and digital devices that support easy connection settings have been modified for easy connection settings, and users must perform specific operations to make these easy connection settings work. Since it is required to be performed on the device, there is a problem that it is still difficult to handle for an unfamiliar user.

  (2) Easy connection setting methods are not compatible. For example, a combination of an access point that supports vendor A easy connection settings and a digital device that supports vendor B easy connection settings, or simple connection settings. In a combination of an access point (or digital device) and an incompatible digital device (or access point), the simple connection setting cannot be effectively functioned.

  (3) There was no technology that could easily set up wireless LAN disconnection.

  An object of the present invention is to solve all the problems of the prior art described above, and for a general-purpose digital device that does not support easy connection setting, a wireless LAN setting method capable of easily performing wireless LAN connection setting and disconnection setting, and To provide a system.

  In order to achieve the above object, the present invention provides a wireless LAN setting system for setting a wireless LAN to a general-purpose digital device compatible with a wireless LAN using a mobile terminal connected to the wireless LAN access point by the wireless LAN. It is characterized by the following measures.

  (1) The access point is based on the communication parameter between the digital device and the means for advertising at least one communication parameter including the communication parameter specific to the wireless LAN set by using the mobile terminal. A digital device that manages wireless LAN connection settings and whether or not a wireless device connected to the WAN side is allowed to communicate with the MAC address using the MAC address, and sets the wireless LAN connection based on the specific communication parameters. A WAN communication management table for temporarily prohibiting communication to the WAN side, filtering control means for controlling communication of the digital device to the WAN side based on the WAN communication management table, and setting of the wireless LAN connection In response, there is provided means for notifying the mobile terminal of information of the WAN communication management table.

  (2) The mobile terminal tries reassociation between the means for receiving the WAN communication management table from the access point and a digital device that is prohibited from communicating to the WAN side in the WAN communication management table. Means for acquiring the MAC address of the digital device; means for notifying the access point of the MAC address acquired from the digital device; requesting communication; and means for limiting the reassociation trial partner to a nearby digital device It was equipped with.

  (3) The access point further comprises means for updating the WAN communication management table so that communication of the MAC address requested for communication to the WAN side is permitted.

  According to the present invention, the following effects are achieved.

  (1) Since digital devices subject to wireless LAN settings do not require any modification when applying the present invention, even general-purpose (compliant with IEEE 802.11 standards) digital devices that do not support easy connection settings. Wireless LAN setting can be performed easily.

  (2) Since the minimum operation required by the user is also provided to the user together with the specific operation contents at the timing when the operation is necessary, the user can easily perform the setting operation.

  (3) Not only wireless LAN connection settings but also wireless LAN disconnection settings can be performed easily.

1 is a diagram showing a configuration of a wireless LAN network to which the present invention is applied. 5 is a sequence flow showing a wireless LAN connection setting procedure in the present invention. It is the figure which showed an example of the WAN communication management table. It is the figure which expressed typically the cutting | disconnection setting method of wireless LAN. 5 is a sequence flow illustrating a procedure for setting up wireless LAN disconnection in the present invention. 2 is a functional block diagram showing a configuration of a main part of a wireless LAN access point. FIG. It is the functional block diagram which showed the structure of the principal part of a portable terminal. It is a figure for demonstrating the setting operation of the conventional wireless LAN connection. It is the sequence flow which showed the conventional association establishment method. It is a figure for demonstrating the setting operation of the conventional wireless LAN cutting | disconnection.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of a main part of a wireless LAN network to which the present invention is applied, and FIG. 2 is a sequence flow showing a wireless LAN connection setting procedure according to one embodiment.

  In FIG. 1, a wireless LAN network of the present invention includes a wireless LAN access point AP connected to the Internet on the WAN side, a wireless LAN compatible general-purpose digital device 2 connected to the Internet via the access point AP, And a portable terminal 1 that assists in setting for connecting the digital device 2 to the access point AP via a wireless LAN. The access point AP can manage a plurality of network names (SSIDs) at the same time.

  The mobile terminal 1 is a wireless LAN-compatible mobile phone, PDA, or smart phone. Here, a case where the mobile terminal 1 is a mobile phone will be described as an example. In the present embodiment, the same SSID and encryption key are set in advance in the access point AP and the mobile phone 1 using a technology such as NFC (Near Field Communication), and the encryption key is set based on these communication parameters. It is assumed that a wireless LAN connection protected by is already established.

  Referring also to FIG. 2, in step S <b> 1, when the user of the mobile phone 1 starts up an application (hereinafter referred to as an easy connection setting program) for easily setting up a wireless LAN connection, the mobile phone 1, the access point AP, The connection state of the wireless LAN is confirmed, and the access point AP is set to allow server push to the mobile phone 1. The easy connection setting program may be automatically activated simultaneously with the power activation of the mobile phone 1.

  In this embodiment, when the easy connection setting program is activated on the mobile phone 1 at time t1, a probe request is transmitted from the mobile phone 1 to the access point AP at time t2, and the probe is transmitted from the access point AP at time t3. A response is returned. In this probe response, communication parameters such as available frequency band (channel) information and network name (SSID) are embedded, and the mobile phone 1 receives this probe response, thereby You can see that you can establish a wireless LAN in between. At time t4, in order to realize a server push function from the access point AP to the mobile phone 1, an HTTP request is transmitted from the mobile phone 1 to the access point AP. Thereafter, a request or command can be transmitted from the access point AP to the mobile phone 1 at an arbitrary timing by the server push function.

  In step S2, a beacon periodically transmitted from the access point AP is received by the digital device 2. This beacon has a unique communication parameter that allows a wireless LAN to be temporarily established with the access point AP without an encryption key and that can be set for connection using the mobile phone 1. Embedded with LAN communication parameters. In this embodiment, an easy-to-understand name such as “Setup” is given as a network name of a wireless LAN that can be connected without the encryption key.

  In step S3, a very simple wireless LAN setting operation is performed on the digital device 2 by the user. In the present embodiment, when the user starts the browser by operating the digital device 2 at time t5 in FIG. 2, and when a network connection is attempted to a predetermined address at time t6, here the wireless LAN connection setting is performed. Is not yet completed, a message requesting wireless LAN connection setting is displayed on the display of the digital device 2 at time t7. At time t8, the network names of communication parameters embedded in the beacon are listed on the display of the digital device 2.

  When the network name [Setup] is selected by the user at time t9, in step S4, a wireless LAN that does not require an encryption key is established between the digital device 2 and the access point AP. In the present embodiment, an authentication request is transmitted from the digital device 2 to the access point AP at time t10 in FIG. 2, and an authentication response is returned from the access point AP to the digital device 2 at time t11. At time t12, an association request is transmitted from the digital device 2 to the access point AP, and at time t13, an association response is returned from the access point AP to the digital device 2.

  In this embodiment, a wireless LAN connection is established between the digital device 2 and the access point AP at this point, but the MAC address of the digital device 2 connected by the wireless LAN without the encryption key is In the WAN communication management table described later, communication to the WAN side is prohibited (MAC address filtering). Therefore, at this time, the digital device 2 is not permitted to connect to the Internet.

  When the access point AP detects that a wireless LAN connection that does not require the encryption key is established with the digital device 2, in step S5, the access point AP manages the WAN communication with the mobile phone 1 by wireless LAN communication. Send table information. In this WAN communication management table, permission / non-permission of communication to the WAN side is registered for each MAC address of the digital device. Here, as shown in FIG. 3A, the MAC address of the digital device 2 is registered. [△ ○ ×] is prohibited from communicating.

  When the mobile phone 1 receives the information of the WAN communication management table, a message to the effect that the mobile phone 1 is brought close to the digital device 2 is displayed on the display in step S6. In step S7, when the user holds the mobile phone 1 over the digital device 2 in response to the message, in step S8, all the MAC addresses that are prohibited from communicating to the WAN side in the WAN communication management table (the digital The digital device 2 receives a wireless LAN standard disassociation message sequentially and continuously transmitted from the mobile phone 1 with the device's MAC address [ΔXX] included).

  At this time, the cellular phone 1 behaves as an access point AP in a pseudo manner by rewriting the MAC address described in the MAC frame of the message to the MAC address of the access point AP. Further, in the present embodiment, the radio wave intensity is suppressed to be lower than usual so that the association cancellation message is received only by the nearby digital device 2, and is limited to the minimum level, for example.

  In step S9, in response to receiving the association release message in which the digital device 2 describes its own MAC address, the digital device 2 sends a reassociation request message in which its own MAC address [ΔXX] is described to the mobile phone 1 Reply to In the mobile phone 1, the MAC address of the digital device 2 is extracted from the returned reassociation request message, and in step S10, a communication request in which the MAC address is described is transmitted to the access point AP.

  When the access point AP receives the communication request from the mobile phone 1, in step S11, the access point AP indicates whether the entry associated with the MAC address requested for communication in the WAN communication management table is permitted or not. Rewrite as “permitted” as shown in). As a result, the filtering for the MAC address [ΔXX] is cancelled, and thereafter, the digital device 2 can connect to the Internet on the WAN side via the access point AP.

  Next, a method for disconnecting the wireless LAN connection established as described above will be described. FIG. 4 is a diagram schematically showing a wireless LAN disconnection setting method, and FIG. 5 is a sequence flow showing an operation of the embodiment. Here, the description starts from a state in which a wireless LAN is established between the access point AP, the mobile phone 1 and the digital device 2.

  In the mobile phone 1, the wireless LAN disconnection setting application is activated in advance. In step S21, the user holds the mobile phone 1 over the digital device 2 that the user wants to set to disconnect from the wireless LAN. In step S22, the application continues for a predetermined time or longer. Then, when the mobile phone 1 is shaken, this is detected by a motion sensor built in the mobile phone 1 and determined as a disconnection request.

  In step S23, the WAN communication management table already registered in the mobile phone 1 is referred to, and the wireless LAN standard association disassociation message is sequentially and continuously transmitted to all the registered MAC addresses while minimizing the radio wave intensity. Sent to. Also at this time, the cellular phone 1 behaves as an access point AP in a pseudo manner by rewriting the MAC address described in the MAC frame of the message to the MAC address of the access point AP. In step S24, the digital device 2 that has received the association cancellation message returns a reassociation request message in which its own MAC address is described in response.

  In step S25, in response to the reception of the reassociation request message, the mobile phone 1 transmits a disconnection request including the MAC address of the transmission source (digital device 2) to the access point AP via the wireless LAN. In step S26, the access point AP updates the WAN communication management table in response to receiving the disconnection request. That is, the filtering of the MAC address requested to be disconnected is updated from the entries already registered in the WAN communication management table, and the communication to the WAN is dynamically rewritten to a rejection setting.

  In step S27, the access point AP transmits an authentication cancellation message to the MAC address (digital device 2) received from the mobile phone 1. In step S28, in response to receiving the authentication cancellation message, the digital device 2 deletes the wireless LAN setting content set in itself.

  FIG. 6 is a functional block diagram showing a configuration of the wireless LAN access point AP, and FIG. 7 is a functional block diagram showing a configuration of the mobile phone 1. Here, illustrations of components unnecessary for the description of the present invention are omitted. The digital device 2 is a general-purpose wireless LAN-equipped machine and does not have a configuration unique to the present invention.

  In the access point AP of FIG. 6, the main control unit 44 is wirelessly connected to the wireless LAN compatible cellular phone 1 and the digital device 2 via the LAN side interface 41 and the wireless control unit 42, and via the WAN side interface 43. Wired connection to the Internet. The wireless control unit 42 decrypts the encrypted reception data or encrypts the transmission data.

  The first communication parameter storage unit 45 stores a communication band, an encryption method, a network name (SSID), an encryption key (WEP key), and the like as wireless LAN communication parameters that require an encryption key setting. The second communication parameter storage unit 46 stores a communication band, a network name, and the like as wireless LAN communication parameters that do not require an encryption key. The WAN communication management table 47 stores information on the WAN communication management table.

  In the main control unit 44, a beacon transmission unit 441 periodically transmits a beacon in which each communication parameter is embedded. Based on the WAN communication management table 47, the filtering control unit 442 controls whether or not the digital device 2 connected to the wireless LAN is allowed to communicate with the WAN side by MAC address filtering. The wireless LAN setting unit 443 includes a wireless LAN connection setting unit 443 a that performs wireless LAN connection setting with each digital device 2 and a wireless LAN disconnection setting unit 443 b that performs wireless LAN disconnection setting with each digital device 2. When a wireless LAN without an encryption key based on the unique communication parameter is set to connect with the digital device 2, the wireless LAN connection setting unit 443a sets the MAC address of the digital device 2 to the WAN communication management table. 47. As a result, the digital device 2 is subject to MAC address filtering, and communication to the WAN side is temporarily prohibited.

  The filtering information notification unit 444 transmits the filtering information described in the WAN communication management table 47 to the mobile phone 1. The communication request receiving unit 445 receives and processes a communication request transmitted from the mobile phone 1. The disconnection request receiving unit 446 receives and processes the disconnection request transmitted from the mobile phone 1. The cancellation request unit 447 transmits an authentication cancellation message to the digital device 2 having the MAC address requested to be disconnected. The management table update unit 448 is configured so that filtering for the MAC address described in the received communication request is canceled and filtering for the MAC address described in the received disconnection request is resumed. The WAN communication management table 47 is updated.

  In the mobile phone 1 of FIG. 7, the main control unit 54 is connected to the access point AP and the digital device 2 via the LAN interface 51, the radio wave intensity control unit 52, and the wireless control unit 53. When the radio wave intensity control unit 52 behaves as the access point AP and establishes an association with the digital device 2, the radio wave intensity control unit 52 suppresses the radio wave intensity of wireless LAN communication to be lower than usual other than the association. Limit to level. The wireless control unit 53 decrypts encrypted reception data or encrypts transmission data.

  The communication parameter storage unit 55 stores wireless LAN communication parameters established between the access point AP and the digital device 2. The WAN communication management table 56 stores information on the WAN communication management table received from the access point AP. Various messages and information are visually displayed on the display 57.

  In the main control unit 54, the server push function setting unit 541 sets a server push function to the own terminal for the access point AP. In this embodiment, the server push function is realized by transmitting an HTTP request to the access point AP in advance. The association trial unit 542 acquires the MAC address of the digital device 2 by acting as an access point AP to the digital device 2 and attempting to transmit an association release message and receive a reassociation request message. The communication request unit 543 transmits to the access point AP a communication request in which the MAC address of the digital device 2 that is desired to cancel the prohibition of communication to the WAN side is described.

  The disconnection request operation detection unit 544 detects the acceleration applied to the mobile phone 1 with the motion sensor 544a, and when the acceleration corresponding to the predefined disconnection request operation is detected for a predetermined time or longer, this is detected. Is determined to be a disconnection request operation.

  When the disconnect request operation is detected, the disconnect request unit 545 requests the MAC address of the digital device from the association trial unit 542. In response to the disconnect request operation, the association trial unit 542 behaves as an access point AP with respect to the digital device 2 and attempts to transmit an association release message and receive a reassociation request message. Get the MAC address. The disconnection request unit 545 transmits the acquired disconnection request describing the MAC address of the digital device 2 to the access point AP.

  In the above embodiment, the radio field strength control unit 52 is provided to limit the reassociation trial partner for acquiring the MAC address from the digital device to a nearby digital device, and the radio field strength at the time of this reassociation trial is set. It has been described as lower than that during wireless LAN communication other than during the re-association attempt. However, the present invention is not limited to this, and instead of the radio wave intensity control unit 52, a measurement unit that measures the received radio wave intensity of the reassociation request message in the reassociation, and a measurement result of the received radio wave intensity And a comparison unit that compares the received signal strength with a predetermined threshold value, so that the trial partner whose received radio wave intensity exceeds the threshold value is assumed to be a nearby digital device 2, and only the reassociation is valid and the MAC address is extracted from the reassociation request message. Anyway.

  DESCRIPTION OF SYMBOLS 1 ... Portable terminal (cell phone), 2 ... Digital equipment corresponding to wireless LAN, 41, 51 ... Wireless LAN interface, 42, 53 ... Wireless control part, 43 ... WAN interface, 44, 54 ... Main control part, 45, 46 , 55 ... Communication parameter storage unit, 47, 56 ... WAN communication management table, 52 ... Radio wave intensity control unit, 57 ... Display

Claims (11)

In a wireless LAN setting system that uses a mobile terminal connected to a wireless LAN access point via a wireless LAN to set up a wireless LAN on a general-purpose digital device that supports wireless LAN,
The access point is
Means for publicizing at least one communication parameter including a communication parameter specific to a wireless LAN set using the mobile terminal;
Means for setting up a wireless LAN connection based on the unique communication parameters with the digital device;
Manages whether or not a digital device connected to a wireless LAN is allowed to communicate on the WAN side with its MAC address, and temporarily prohibits communication on the WAN side of a digital device that is configured for wireless LAN connection based on the specific communication parameters WAN communication management table,
Filtering control means for controlling communication of the digital device to the WAN side based on the WAN communication management table;
In response to the setting of the wireless LAN connection, comprising means for notifying the mobile terminal of information of the WAN communication management table,
The mobile terminal is
Means for receiving the WAN communication management table from the access point;
Means for acquiring a MAC address of the digital device by trying reassociation with a wireless LAN standard with a digital device that is prohibited from communicating on the WAN side in the WAN communication management table;
Means for notifying the access point of the MAC address acquired from the digital device and requesting communication;
Means for restricting the re-association trial partner to a nearby digital device,
The access point is further
A wireless LAN setting system comprising: means for updating the WAN communication management table so that communication of the requested MAC address to the WAN side is permitted.   The means for limiting the re-association trial partner to a nearby digital device lowers the radio field intensity at the time of the re-association trial than at the time of wireless LAN communication other than at the time of the re-association trial. The described wireless LAN setting system. Means for limiting the re-association trial partner to nearby digital devices,
Means for measuring the received radio field strength in the reassociation;
Means for comparing the received radio field intensity with a predetermined threshold,
The wireless LAN setting system according to claim 1, wherein reassociation with a trial partner whose received radio wave intensity exceeds the threshold is validated.   The unique communication parameter is a communication parameter of a wireless LAN that does not require an encryption key for connection, and between the access point and the digital device, a wireless LAN that is not encrypted based on the unique communication parameter. The wireless LAN setting system according to claim 1, wherein a connection is set.   The wireless LAN according to claim 1 or 2, wherein the portable terminal includes means for displaying a request message for causing the mobile terminal to approach the digital device in response to reception of the WAN communication management table. Configuration system. The portable terminal comprises means for setting a server push function to the terminal for the access point,
4. The wireless LAN setting system according to claim 1, wherein the access point transmits the WAN communication management table to the mobile terminal using the server push function. 5. The wireless LAN setting system according to claim 6 , wherein the means for setting the server push function transmits an HTTP request message to the access point in advance. The mobile terminal further includes
Means for detecting a wireless LAN disconnection request operation;
Means for trying the reassociation in response to the disconnection request operation and obtaining a MAC address from the digital device to be disconnected;
Means for transmitting a disconnection request including the acquired MAC address to the access point by wireless LAN,
The access point is further
A means for transmitting a wireless LAN setting deletion request to the MAC address notified by the disconnection request by wireless LAN,
6. The WAN communication management table according to claim 1, wherein the means for updating the WAN communication management table updates the WAN communication management table so that communication of the MAC address notified by the disconnection request is prohibited. The described wireless LAN setting system. The portable terminal comprises a motion sensor;
7. The means for detecting the disconnection request operation, when the motion sensor detects that the mobile terminal has been continuously shaken for a predetermined time or more, determines that this is a disconnect request operation. Wireless LAN setting system described in 1.   The wireless LAN according to any one of claims 1 to 6, wherein the mobile terminal acts as the access point by transmitting an association release message in which a MAC address of the mobile terminal is described when the reassociation is attempted. Configuration system. In a wireless LAN setting method that uses a mobile terminal connected to a wireless LAN access point and a wireless LAN connection to set a wireless LAN connection to a general-purpose digital device compatible with wireless LAN,
The access point advertises at least one communication parameter including a communication parameter specific to a wireless LAN set using the mobile terminal;
The digital device receives the unique communication parameters and performs a wireless LAN connection setting with the access point;
The access point prohibits communication on the WAN communication management table on the WAN side of the digital device connected to the wireless LAN based on the unique communication parameters, and
The access point controls the communication of the digital device to the WAN side based on the WAN communication management table;
In response to the wireless LAN connection setting, the access point notifies the mobile terminal of information of the WAN communication management table;
A procedure for the mobile terminal to receive a WAN communication management table from the access point;
The mobile terminal obtains the MAC address of the digital device by trying to re-associate with the wireless LAN standard with a digital device that is prohibited from communicating with the WAN side in the WAN communication management table, A procedure for limiting the re-association attempt to nearby digital devices;
The mobile terminal notifies the access point of the acquired MAC address to request communication,
A wireless LAN setting method comprising: a step of updating the WAN communication management table so that the access point is permitted to communicate the MAC address requested to be communicated to the WAN side.

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