JP6223061B2 - Wireless communication apparatus, control method thereof, and program - Google Patents

Description

  The present invention relates to a connection method between wireless communication devices.

  With the recent integration of wireless communication devices, wireless LANs have been installed not only in portable personal computers (so-called notebook PCs) but also in printers, personal digital assistants, digital cameras, mobile phones, smartphones, etc. . As a result, a device that has conventionally had only a wired communication means with a specific device such as a USB connection can perform data communication with various devices by having a wireless communication means. ing.

  In the case of wired communication, you can explicitly establish a connection with the desired device by connecting the device with a cable or the like, but in the case of wireless communication, you can visually check the connection status between the devices. I can't confirm. Therefore, when the user starts wireless communication, the user needs to operate the device to establish a connection. When a device is connected to a partner device using wireless communication, a wireless network to be connected is first selected to perform a wireless connection process, and then a connection partner device is selected to perform a device connection process. For example, when a digital camera and a smartphone are connected, data such as an image can be transmitted and received when the device connection process with the counterpart device is completed.

  Conventionally, as a method of connecting a wireless communication device and a wireless access point, there is a mechanism for exchanging access point network parameters and connecting them by simply pressing buttons on both devices simultaneously. At this time, the wireless access point generates a network for parameter exchange, and the wireless communication device participates in the network and acquires parameters. After that, once the network is disconnected, the access point activates the normal infrastructure network again, and the wireless communication device can easily connect by participating in the acquired parameter network. Similarly, when connecting wireless communication devices, there is a mechanism that allows easy connection by simultaneously pressing the buttons of both devices. In the case of wireless communication devices, one device generates an ad hoc network, and the other device searches and connects to the network, and then exchanges parameters of the network. In the second and subsequent connections, it is possible to easily connect by using the acquired parameters. According to Patent Document 1, an example of a method for easily and automatically setting parameters is disclosed.

JP 2009-224821 A

  However, after exchanging network parameters using the method described above, if the network is disconnected once and then generated and connected again, network generation may fail if the other network remains. .

A wireless communication apparatus according to the present invention is a wireless communication apparatus that establishes a connection with an external apparatus via a network, and operates as a generation apparatus that generates a network or participates in a network generated by the external apparatus A determination unit that determines whether to operate as a generation device; a generation unit that generates a network having a network identifier if the determination unit determines to operate as the generation device; and a determination unit that operates as the participating device. The participation device that participates in the network generated by the external device that operates as the generation device, and the external device that has participated in the network generated by the generation device or generated the network that has participated in the participation device And parameter exchange means for exchanging predetermined parameters And disconnecting the network generated by the generating unit or the network generated by the external device after exchanging parameters by the parameter exchanging unit, and when the network is generated by the generating unit, the disconnection After disconnecting from the network by means, the generating means regenerates a network having the same identifier as the network disconnected by the disconnecting means, and when a predetermined error is detected for the regenerated network by the generating means, The generation means repeatedly performs the regeneration of the network .

  ADVANTAGE OF THE INVENTION According to this invention, when exchanging network parameters between wireless connection apparatuses and connecting, possibility that a connection will fail can be reduced.

1 is a diagram illustrating a system configuration of a digital camera according to an embodiment of the present invention. It is a figure which shows the network structure which concerns on embodiment of this invention. It is a sequence diagram in case a connection process succeeds in the conventional connection method. It is a sequence diagram when a connection process fails in the conventional connection method. It is a sequence diagram which shows the connection method which concerns on the 1st Embodiment of this invention. It is a flowchart figure which shows the connection method which concerns on the 1st Embodiment of this invention. It is a sequence diagram which shows the connection method which concerns on the 2nd Embodiment of this invention. It is a flowchart figure which shows the connection method which concerns on the 2nd Embodiment of this invention. It is a sequence diagram which shows the connection method which concerns on the 3rd Embodiment of this invention. It is a flowchart figure which shows the connection method to the 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The embodiment described below is an example as means for realizing the present invention, and may be appropriately modified or changed depending on the configuration of the apparatus to which the present invention is applied and various conditions.

  In the following embodiments, connection between digital cameras will be described as an example. However, the present invention can be applied to connection of a mobile phone called a so-called smartphone, a so-called tablet device, a music player, or a printer. The connection is not limited to the same type of device, but can be applied to a connection between different types of devices such as a mobile phone and a digital camera.

[First Embodiment]
<Configuration of digital camera>
FIG. 1 is a diagram illustrating a configuration of a digital camera 100 according to the present embodiment.

  Reference numeral 10 denotes a lens barrier, 11 denotes a photographing lens, and 12 denotes a shutter having a diaphragm function, which are controlled by the imaging control means 13.

  Reference numeral 14 denotes an image sensor that converts an optical image into an electric signal 100, and 15 denotes an image processing circuit, which performs predetermined pixel interpolation processing and color conversion processing on data from the image sensor 14 or data from the memory control circuit 16. .

  Reference numeral 16 denotes a memory control circuit. Data of the image sensor 14 is A / D converted by the image processing circuit 15 and written to the memory 18.

  Reference numeral 17 denotes an image display unit composed of a TFT LCD or the like. Display image data written in the memory 18 is D / A converted and displayed on the image display unit 17.

  Reference numeral 18 denotes a memory for storing captured still images and moving images, and has a sufficient storage capacity to store a predetermined number of still images and a predetermined time of moving images.

  Thereby, even in the case of continuous shooting or panoramic shooting in which a plurality of still images are continuously shot, it is possible to write a large amount of images to the memory 18 at high speed.

  The memory 18 can also be used as a work area for the system control circuit 50.

  Reference numeral 50 denotes a system control that executes various processes necessary for the present embodiment, such as a subject recognition process for a captured image, a process for collating a subject recognition result with management data, and a status data generation process, and also controls the entire digital camera 100. Circuit. Reference numeral 51 denotes a memory for storing constants, variables, programs and the like for operating the system control circuit 50.

  An image processing unit 52 performs various image processing such as resizing a still image.

  Reference numeral 60 denotes a communication control unit which controls a communication function with an external device and is connected to the antenna 61.

  Reference numeral 70 denotes an operation means for inputting various operation instructions of the system control circuit 50, and is configured by a single or a combination of a switch, a dial, a touch panel, pointing by eye-gaze detection, a voice recognition device, or the like.

  Reference numeral 71 denotes a timer used for measuring a data recording speed and a data rate of data to be acquired.

  Reference numeral 90 denotes a card controller that transmits / receives data to / from an external storage medium such as a memory card. Reference numeral 91 denotes an interface with an external storage medium such as a memory card. A connector 92 connects to an external storage medium such as a memory card. Reference numeral 93 denotes an external storage medium such as a memory card. Reference numeral 94 denotes storage medium attachment / detachment detection means for detecting whether or not the external storage medium 93 is attached to the connector 92.

  The overall system configuration of the digital camera 100 has been described above.

<Overview of connection configuration>
FIG. 2 is a diagram schematically showing a connection form in which the digital camera 100 and the digital camera 100 ′ are directly connected in the present embodiment. In this case, one of the digital cameras 100 forms an ad hoc network and starts to periodically transmit a beacon signal. The other digital camera 100 ′ detects the beacon signal and participates in the wireless LAN network formed by the digital camera 100. Then, communication between devices is established through mutual device discovery, device capability acquisition, and the like, and data can be transmitted and received.

<Conventional connection method>
With reference to FIG. 3 and FIG. 4, in the conventional connection method, a sequence when the connection is successful when directly connecting the digital camera 100 and the digital camera 100 ′ and a sequence when the connection fails will be described. . First, a sequence when the connection is successful will be described. FIG. 3 is a sequence diagram when the connection process is successful in the conventional connection method.

  First, when the camera A and the camera B respectively start the direct connection mode, both the camera A and the camera B start operation as a Registrar. Registrar creates an ad hoc network with a different BSSID each time the direct connection mode is activated, and waits for the connection of the counterpart device. After that, when the counterpart device does not connect for a random time, it operates as Enrollee. Enrollee searches and participates in the Registrar network. Camera A and camera B repeatedly perform operations as Registrar and Enrollee at random times, respectively. At one timing, when one of them is operating as a Registrar, the other is operating as an Enrollee, so that it is possible to join the same network. In FIG. 3, camera A is Registrar, camera B is Enrollee, and camera B is connected to the network of camera A.

  In an ad hoc network, Registrar and Enrollee both transmit beacons having the same BSSID. RSNIE is assigned to the network beacon generated by Registrar. RSNIE indicates information related to encryption in an ad hoc network, and can notify what security is applied to Enrollee to perform data communication. On the other hand, the RSNIE is not initially assigned to the beacon of the Enrollee network, and the Enrollee transmits a beacon to which the same RSNIE as the Regstrar RSNIE is assigned after the parameter exchange.

  After joining the same network, the parameter exchange protocol is executed between the Registrar and Enrollee, and the network parameters currently connected are stored in the memory 18 by the camera A and the camera B, respectively. When the parameter exchange is completed, each of the cameras A and B disconnects the network once.

  Thereafter, the cameras A and B operate as Registrar and Enrollee according to the exchanged parameters again, generate an ad hoc network on the Registrar side, search for the network on the Enrollee side, and participate if found. Enrollee sends out a beacon to which RSNIE is assigned at this stage. By performing the above connection processing, the camera A and the camera B can be connected.

  Here, the reason for disconnecting the network once is to efficiently share the responsibility of the communication module. For example, when designing a module, not only the function of exchanging parameters and connecting, but also connecting by scanning the network or manually, and exchanging parameters between devices and wireless access points It is conceivable that the function to perform will be installed together. Considering such a case, it is easier to design and manage the parameter exchange module and the wireless connection module. For this reason, parameter modules are managed where parameters are exchanged, and after disconnecting, the wireless connection is performed using the parameters acquired by the wireless connection module. The point of disconnecting the network once in this way is the same for the digital camera of this embodiment.

  So far, the conventional connection method has been described. However, there is a possibility that the connection process may fail in the conventional method. Hereinafter, a case where the connection fails in the conventional method will be described with reference to FIG.

  The sequence from when the camera A and the camera B start the direct connection mode to when the network parameters are exchanged is the same as the sequence when the connection is successful. Since the camera A and the camera B are disconnected from each other after the parameters are exchanged, the network disconnection timing may be different as shown in FIG. When the camera A completes the network disconnection and tries to generate the network again as the Registrar, the camera B may still remain without disconnecting the network. In this case, the camera B which is an enrollee continues to transmit a beacon to which no RSNIE is assigned. That is, when the camera A generates a network to which RSNIE is assigned as a registrar, that is, security is applied, the presence of a network of the same BSSID with a different security type is already detected. In such a case, an error (security type error) usually occurs. When a security type error occurs, it is determined that the connection cannot be made at that time, and it is normal to display the error occurrence on the image display unit 17 and terminate the connection process. Therefore, the connection process must be performed again from the beginning. .

  As described above, in the case of the conventional method, there is a possibility that the connection process may fail. In order to prevent such a case, the digital camera in the present embodiment uses the following connection method.

<Connection method in this embodiment>
Next, the connection method in the present embodiment will be described with reference to FIGS. FIG. 5 is a sequence diagram showing a connection method according to the first embodiment of the present invention.

  FIG. 5 also shows that until the camera A and the camera B start the direct connection mode and the parameter exchange is completed, the network on the camera B side remains and a security type error occurs on the camera A side. It is the same as the sequence shown.

  In this embodiment, when a security type error occurs when creating a network on the Registrar side, the connection process is not terminated at that time, but is repeated a predetermined number of times until the network is successfully created. Can be successful. As shown in FIG. 5, while the Enrollee side network remains, even if network generation is performed on the Registrar side, a security type error occurs and fails. Therefore, by repeating network generation a predetermined number of times, it is possible to connect devices even when the network on the Enrollee side is slow to disconnect.

  FIG. 6 is a flowchart showing a connection method according to the first embodiment of the present invention. Each process in this flowchart is realized by the system control circuit 50 expanding and executing a program stored in the nonvolatile memory 51 in the memory 18.

  When the connection is started, first, in S601, the system control circuit 50 repeats the operation of Registrar / Enrollee to determine the role of whether to become Registrar or Enrollee, and the process proceeds to S602. As described above, in the case of Registrar, an ad hoc network is generated and the other device is awaited. In the case of Enrollee, the Registrar network is searched and connected when found. This Registrar / Enroll operation is alternately performed every random time.

  In S602, when the role of Registrar / Enrollee is determined, the system control circuit 50 creates a network. The Enrollee searches for the Registrar network and joins the devices by joining, and the process proceeds to S603.

  In S603, the system control circuit 50 acquires the parameters of the currently connected network, temporarily stores them in the memory 18, and proceeds to S604. The parameters stored in the memory 18 when the power of the device is turned off are stored in the nonvolatile memory 51 so that the parameters acquired here can be used in the subsequent connection.

  In step S604, the system control circuit 50 disconnects the currently connected network once, and proceeds to step S605.

  In step S605, the system control circuit 50 determines whether or not the system control circuit 50 itself is a Registrar from the network parameter acquired in step S603. If it is determined in S605 that it is Registrar, the process proceeds to S606. If it is determined in S605 that it is not Registrar but Enrollee, the process proceeds to S613.

  First, processing in the case of Registrar will be described.

  In S606, the system control circuit 50 sets 1 to the variable n prepared in the memory 18, and proceeds to S607.

  In step S607, the system control circuit 50 generates a Registrar network based on the network parameters acquired in step S603, and the process advances to step S608.

  In step S608, the system control circuit 50 determines whether an error has occurred when the network is generated in step S607. If it is determined in S608 that an error has occurred, the process proceeds to S610. If it is determined in S608 that no error has occurred, the process proceeds to S609.

  In step S609, the system control circuit 50 determines that the connection process has been completed, and ends the process.

  In S616, the system control circuit 50 determines whether or not the error type is a security type error. If it is determined in S616 that it is a security type error, the process proceeds to S610. If it is determined in S616 that the error is not a security type, the process proceeds to S611, where it is determined that the connection has failed, and the process ends.

  In S <b> 610, the system control circuit 50 determines whether or not the variable n stored in the memory 18 is smaller than the maximum retry count N stored in the nonvolatile memory 51. If it is determined in S610 that n <N, the process proceeds to S612. If it is determined in S610 that n <N is not satisfied, the process proceeds to S611.

  When the process proceeds from S610 to S611, the system control circuit 50 determines that the connection has failed because the number of network generation retries exceeds the maximum number of retries N (retry has been performed a predetermined number of times) in S610, and the connection process Exit. At this time, a character string for notifying the user of connection failure may be displayed on the image display unit 17. That is, in S612, the system control circuit 50 increments the variable n stored in the memory 18, and proceeds to S607.

  Next, a case where it is determined in S605 that the device itself is Enrollee will be described.

  In step S613, the system control circuit 50 searches for the Registrar network based on the network parameters acquired in step S603, and the process advances to step S614.

  In 614, the system control circuit 50 determines whether the network of the parameter acquired in S603 has been found as a result of the network search. If it is determined in S614 that a network with the acquired parameters has been found, the process proceeds to S615. If it is determined in S614 that a network with the acquired parameter has not been found, the process returns to S613 and the network search is continued.

  In S615, the system control circuit 50 performs connection processing to the network after discovering the network, and proceeds to S609.

  In step S609, the system control circuit 50 determines that the connection process between the devices has been completed, and the process ends.

  As described above, according to the present embodiment, when a security type error occurs on the Registrar side, it is possible to complete the connection between wireless communication devices by repeating a predetermined number of times until the network is successfully generated. .

  Further, if a malicious person attaches the same ESSID to create a network with no security, there may be a case where a security type error continues even if the network is continuously created on the Registrar side and connection cannot be made. In this case, by setting the upper limit number of times to retry the network generation, the network generation can be stopped halfway and a failure notification can be sent to the user.

[Second Embodiment]
In the second embodiment, a method that can connect devices even when a security type error occurs is described by a method different from the connection method described in the first embodiment. A connection method according to the second embodiment will be described with reference to FIGS.

  FIG. 7 is a sequence diagram showing a connection method according to the second embodiment of the present invention.

  In the present embodiment, when a security type error occurs when generating a network on the Registrar side, the connection process is not terminated there, but the network is generated again after waiting for a predetermined time. Can successfully connect. As shown in FIG. 7, while the Enrollee side network remains, even if network generation is performed on the Registrar side, a security type error occurs and fails. Therefore, once a security type error occurs, the network is generated again after waiting for a predetermined time. This enables the devices to be connected even when the network on the Enrollee side is slow to disconnect.

  FIG. 8 is a flowchart showing a connection method according to the second embodiment of the present invention. Each process in this flowchart is realized by the system control circuit 50 expanding and executing a program stored in the nonvolatile memory 51 in the memory 18.

  Since connection is started, S801 to S805 are the same as S601 to S605 of FIG.

  First, a case where it is determined as Registrar in S805 will be described.

  In step S806, the system control circuit 50 generates a Registrar network based on the network parameters acquired in step S803, and the process advances to step S816.

  In S816, the system control circuit 50 determines whether an error has occurred when the network is generated in S806. If it is determined in S816 that an error has occurred, the process proceeds to S807. If it is determined in S816 that no error has occurred, the process proceeds to S812.

  In step S807, the system control circuit 50 determines whether the error type is a security type error. If it is determined that it is a security type error, the process proceeds to S808. If it is determined that the error is not a security type error, the process ends.

  In S808, the system control circuit 50 starts the timer 71 and proceeds to S809.

  In step S809, the system control circuit 50 determines whether the timer has timed out. If it is determined in S809 that the timer has timed out, the process proceeds to S810. If it is determined that the timer has not timed out, the process returns to S809. The time is set to the time when the network on the Enrollee side is expected to be completely disconnected.

  In S810, the system control circuit 50 stops the timer and proceeds to S811.

  In S811, the system control circuit 50 generates a network again, and proceeds to S812.

  In step S812, the system control circuit 50 determines that the connection is complete and ends the connection process.

  In S805, the processes S813 to S815 when it is determined as Enrollee are the same as the processes of S613 to S615 in FIG.

  As described above, according to the present embodiment, when a security type error occurs on the Registrar side, it is possible to complete a connection between wireless communication devices by waiting for a predetermined time and generating a network again. it can.

  In the present embodiment, the network generation is performed once again after waiting for a predetermined time. However, the present invention is not necessarily limited to this configuration. For example, if a security type error occurs even after the network is generated again, the network may be generated again. Alternatively, the network generation may be performed again after waiting for a predetermined time again. By doing so, the wireless communication devices can be more reliably connected.

[Third Embodiment]
In the third embodiment, a method for establishing a connection between devices by a method different from the connection method described in the first embodiment and 2 will be described. A connection method according to the third embodiment will be described with reference to FIGS.

  FIG. 9 is a sequence diagram showing a connection method according to the third embodiment of the present invention.

  The sequence from when the camera A and the camera B start the direct connection mode to when the exchange of the network parameters is completed is the same as the sequence shown in FIGS.

  In this embodiment, the Registrar assumes that the Enrollee network remains, waits for a predetermined time after disconnecting the network, and then generates the network again. As shown in Fig. 9, on the Registrar side, after waiting for the time that the Enrollee side network is expected to remain, after creating the network again, devices can be connected even when the Enrollee side network disconnection is slow I have to.

  FIG. 10 is a flowchart showing a connection method according to the third embodiment of the present invention. Each process in this flowchart is realized by the system control circuit 50 expanding and executing a program stored in the nonvolatile memory 51 in the memory 18.

  Since the connection is started, S1001 to S1005 are the same as S601 to S605 in FIG.

  First, the case where it is determined as Registrar in S1005 will be described.

  In S1006, the system control circuit 50 starts the timer 71 and proceeds to S1007.

  In step S1007, the system control circuit 50 determines whether the timer has timed out. If it is determined in S1007 that the timer has timed out, the process proceeds to S1008. If it is determined that the timer has not timed out, the process returns to S1007. The timeout time of the timer is set to a time when the Enrollee side network is expected to be completely disconnected.

  In S1008, the system control circuit 50 stops the timer and proceeds to S1009.

  In S1009, the system control circuit 50 generates a network again, and proceeds to S1010.

  In step S1010, the system control circuit 50 determines that the connection has been completed and ends the connection process.

  In S1005, the processes S1011 to S1013 when determined to be Enrollee are the same as the processes of S613 to S615 of FIG.

  As described above, according to the present embodiment, the network parameters are exchanged on the Registrar side, and once disconnected, the network is generated after waiting for a predetermined time, so that the connection between the wireless communication devices can be surely succeeded. Can do.

[Other Embodiments]
In the first to third embodiments, the connection method for ensuring a successful wireless communication device connection has been described. Other connection methods will be described.

  For example, a connection method combining the first embodiment and the third embodiment is conceivable. In other words, after the network is disconnected by the Registrar, the network generation is performed after waiting for the time expected to disconnect the Enrollee network (third embodiment). However, if a security type error still occurs, network generation is repeated a predetermined number of times until the network generation is successful (first embodiment).

  By so doing, it is possible to establish a connection between wireless communication devices more reliably than in the third embodiment.

  In addition, although this embodiment demonstrated as a connection method at the time of connecting wireless communication apparatuses with an ad hoc network, the application range of this invention is not limited to this embodiment. The present invention can be applied as long as a network is generated at the time of parameter exchange, then disconnected once, and a network having the same parameters as the network generated at the time of parameter exchange is generated and connected again. is there.

  The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. It is a process to be executed.

Claims (16)

A wireless communication device that establishes a connection with an external device via a network,
Determining means for determining whether to operate as a generating device for generating a network or as a participating device to participate in a network generated by the external device;
If the determining means determines to operate as the generating device, generating means for generating a network having a network identifier;
When the determination unit determines to operate as the participation device, the participation unit participates in the network generated by the external device operating as the generation device, and participates in the network generated by the generation unit, or the participation A network generated by the generating unit or a network generated by the external device after exchanging parameters by the parameter exchanging unit after exchanging the parameters by the parameter exchanging unit; Cutting means for cutting from
When the network is generated by the generating unit, after disconnecting from the network by the disconnecting unit, the generating unit regenerates a network having the same identifier as the network disconnected by the disconnecting unit,
The wireless communication apparatus according to claim 1, wherein when a predetermined error is detected for the network regenerated by the generating unit, the generating unit repeatedly regenerates the network.   The wireless communication apparatus according to claim 1, wherein if the predetermined error is detected even if the generation unit performs the network regeneration a predetermined number of times, it is determined that the connection has failed.   The said production | generation means does not repeat the reproduction | regeneration of the said network, when the error different from a predetermined | prescribed error is detected with respect to the network reproduced | regenerated by the said production | generation means. Wireless communication device.   The wireless communication apparatus according to claim 1, wherein the predetermined error is an error relating to a security type of the network.   5. The wireless communication device according to claim 1, further comprising a first transmission unit configured to transmit a signal including the network identifier when a network is generated by the generation unit.   The wireless communication apparatus according to claim 5, wherein the signal transmitted by the first transmission unit further includes information related to encryption. The radio communication apparatus according to claim 5 or 6, wherein the signal transmitted by the first transmission means is a beacon signal . When participating in the network generated by the external device by the participating unit, any one of claims 1 to 7 further comprising a second transmission means for transmitting a signal including an identifier of the network generated by the external device 1 The wireless communication device according to item. 9. The wireless communication apparatus according to claim 8 , wherein the signal transmitted by the second transmission unit includes information related to encryption. The radio communication apparatus according to claim 8 or 9 , wherein the signal transmitted by the second transmission means is a beacon signal. The wireless communication apparatus according to any one of claims 1 to 10, wherein the wireless communication device is a digital camera. The wireless communication device wireless communication device according to any one of claims 1 to 10, characterized in that a mobile phone. The wireless communication apparatus according to any one of claims 1 to 10, wherein the wireless communication device is a tablet device. The wireless communication apparatus according to any one of claims 1 to 10, wherein the wireless communication device is a printer. A method of controlling a wireless communication apparatus that establishes a connection with an external apparatus via a network, wherein the wireless communication apparatus operates as a generation apparatus that generates a network or participates in a network generated by the external apparatus A determination step of determining whether to operate as a generation step, and a generation step of generating a network having a network identifier if it is determined to operate as the generation device in the determination step;
If it is determined in the determination step that the device operates as the participation device, the participation step of participating in the network generated by the external device operating as the generation device, and the participation in the network generated in the generation step, or the participation A parameter exchanging step for exchanging predetermined parameters with the external device that has generated the network that participated in the step;
After exchanging parameters in the parameter exchanging step, when disconnecting from the network generated in the generating step or the network generated by the external device, and when generating the network in the generating step, A regeneration step of regenerating a network having the same identifier as the network disconnected in the disconnecting step after disconnecting from the network;
A method for controlling a wireless communication apparatus, comprising: repeatedly performing regeneration of a network in the regeneration step when a predetermined error is detected for the network regenerated in the regeneration step. A computer-executable program that causes a computer to function as each unit of the wireless communication device according to any one of claims 1 to 14 .

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