JP6578913B2 - Electronic device, terminal, wireless communication method, and program - Google Patents

Description

  The present invention relates to an electronic device, a terminal, a wireless communication method, and a program.

  Patent Document 1 discloses a printing apparatus that establishes temporary connection wireless communication with a PC, receives setting information of the main connection from the PC through temporary connection wireless communication, and applies the setting information to the setting of the main connection. ing. Further, Patent Document 1 disconnects a connection with an access point, activates a soft access point or an ad hoc mode communication unit, establishes a wireless connection for temporary connection with a printing apparatus, and sets temporary connection wireless connection setting information. A PC is disclosed that transmits by communication, disconnects the temporary connection, and reestablishes the connection with the access point.

JP2015-154130A

  Wireless LANs have various standards with different frequency bands. For example, standards such as IEEE802.11b, IEEE802.11b / g, IEEE802.11b / g / n use the 2.4 GHz band. For example, standards such as IEEE802.11a, IEEE802.11a / n, IEEE802.11a / n / ac use the 5 GHz band.

  Here, for example, a situation may occur in which the printer does not provide a wireless connection between the terminal and the access point that has the same frequency band as the wireless connection. In this situation, the printer may not be able to wirelessly communicate with the terminal. It is difficult for the user to establish a wireless connection between the terminal and the printer in consideration of the frequency band of the wireless LAN without some help.

  It is an object of the present invention to support easy wireless connection.

  One aspect of the present invention that solves the above problem is an electronic device, a short-range wireless communication unit, a first connection form that communicates with an external device via an access point, and the external device in a peer-to-peer manner. A wireless communication unit that provides a second connection form for communication, an acquisition unit that acquires setting information including a radio frequency band used by the external device from the external device via the short-range wireless communication unit, and Based on the radio frequency band of the external device, the selection unit that selects the first connection form or the second connection form as the connection form used by the wireless communication unit for communication with the external device; And a connection processing unit that performs connection processing of communication in the connection form. Thereby, the electronic device can establish the communication of the connection form according to the radio frequency band of the terminal. The user can easily establish a wireless connection without being conscious of the frequency band of the wireless LAN.

  In the electronic device, the access point corresponds to communication in a first frequency band and a second frequency band, and the wireless communication unit corresponds to communication in the first frequency band. The selection unit selects the first connection form when the radio frequency band of the external device corresponds to the first frequency band, and the radio frequency band of the external device is the second frequency band. When the frequency band is supported, the second connection form may be selected. Thereby, when the electronic device cannot communicate with the terminal via the access point, it can communicate with the terminal peer-to-peer.

  In the electronic device, the setting information includes a network setting used by the external device, and the connection processing unit uses the network setting and the access point when the first connection form is selected. When the second connection form is selected, the internal access point function may be validated. Accordingly, the electronic device can easily establish a wireless connection with the access point using the network setting information acquired from the external device.

  Another aspect of the present invention that solves the above problem is a terminal, a short-range wireless communication unit, a first connection form that communicates with an external device via an access point, and the external device in a peer-to-peer manner A wireless communication unit that provides a second connection form for communication; an acquisition unit that acquires setting information including network settings used by the external device from the external device via the short-range wireless communication unit; A confirmation unit that confirms whether or not communication with the external device can be performed in accordance with the connection type 1, and when it is confirmed that communication with the external device cannot be performed in the first connection mode, using the acquired network setting And a connection processing unit that performs connection processing of communication in the second connection form. Thereby, when the terminal cannot communicate with the external device via the access point, the terminal can communicate with the external device peer-to-peer. The user can easily establish a wireless connection without being conscious of the frequency band of the wireless LAN.

  In the above terminal, the access point and the wireless communication unit correspond to communication in a first frequency band and a second frequency band, and communication in the first connection form is performed in the first frequency band. A band or the second frequency band is used, and the communication of the second connection form may use the first frequency band. Thereby, even if the terminal cannot communicate with the external device in the second frequency band via the access point, the terminal can communicate with the external device in the first frequency band by peer-to-peer.

  In the above terminal, the acquisition unit acquires the identification information of the external device from the external device via the short-range wireless communication unit, and the confirmation unit receives the identification information received via the wireless communication unit. Whether or not communication with the external device is possible may be confirmed based on the acquired identification information. Thereby, the terminal can easily check communication with the external device.

  In the terminal described above, the acquisition unit may transmit a radio frequency band used by the wireless communication unit in the communication of the first connection form to the external device via the short-range wireless communication unit. As a result, the terminal can easily cause the external device to execute an operation corresponding to the radio frequency band.

  Still another aspect of the present invention for solving the above problem is a wireless communication method for an electronic device, wherein the electronic device communicates with a short-range wireless communication unit and an external device via an access point. And a wireless communication unit that provides a second connection form for communicating with the external device on a peer-to-peer basis, and the wireless communication method includes setting information including a radio frequency band used by the external device. Acquiring from the external device via the short-range wireless communication unit, and based on the radio frequency band of the external device, the wireless communication unit uses the first as a connection form for communication with the external device. Selecting the connection form or the second connection form, and performing communication connection processing of the selected connection form. Thereby, the electronic device can establish the communication of the connection form according to the radio frequency band of the terminal. The user can easily establish a wireless connection without being conscious of the frequency band of the wireless LAN.

  Still another aspect of the present invention that solves the above problem is a wireless communication method of a terminal, wherein the terminal communicates with a short-range wireless communication unit and an external device via an access point. And a wireless communication unit that provides a second connection form that communicates with the external device on a peer-to-peer basis, wherein the wireless communication method includes setting information including network settings used by the external device as the near-field information. Acquiring from the external device via a distance wireless communication unit, checking whether communication with the external device is possible according to the first connection form, and communicating with the external device according to the first connection form And a step of performing connection processing of communication of the second connection form using the acquired network setting when it is confirmed that the communication cannot be performed. Thereby, when the terminal cannot communicate with the external device via the access point, the terminal can communicate with the external device peer-to-peer. The user can easily establish a wireless connection without being conscious of the frequency band of the wireless LAN.

  Still another aspect of the present invention for solving the above problem is a terminal program, wherein the terminal communicates with a short-range wireless communication unit and an external device via an access point, and A wireless communication unit that provides a second connection form for communicating with the external device on a peer-to-peer basis, and the program stores setting information including a network setting used by the external device as the short-range wireless communication unit. And acquiring from the external device via the step, confirming whether the first connection form can communicate with the external device, and confirming that the first connection form cannot communicate with the external device. In this case, the terminal is caused to execute a connection process of communication of the second connection form using the acquired network setting. Thereby, when the terminal cannot communicate with the external device via the access point, the terminal can communicate with the external device peer-to-peer. The user can easily establish a wireless connection without being conscious of the frequency band of the wireless LAN.

It is a block diagram which shows the structural example of the radio | wireless communications system which concerns on one Embodiment of this invention. It is a block diagram which shows the structural example of a radio | wireless communications system. 6 is a flowchart illustrating an example of a printer connection process. It is a flowchart which shows an example of a connection process of a terminal.

  An embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram illustrating a configuration example of a wireless communication system. The wireless communication system 1 includes one or more terminals 10 and one printer 20 (corresponding to the “electronic device” of the present invention). The terminal 10 is an electronic device such as a smartphone, a tablet computer, or a mobile PC (Personal Computer). The terminal 10 and the printer 20 can communicate by wireless connection via a wireless LAN (Local Area Network).

For easy understanding, the wireless LAN of the present embodiment uses the following two connection forms.
(N1) Wi-Fi connection in which the terminal 10 and the printer 20 communicate via the AP 30 (Access Point) (infrastructure mode, hereinafter referred to as “Wi-Fi connection”)
(N2) Wi-Fi connection in which the printer 20 as a virtual AP communicates with each of one or more terminals 10 peer-to-peer (soft AP mode, hereinafter referred to as “direct connection”)

The terminal 10 supports wireless communication in the following two frequency bands. The AP 30 is the same as the terminal 10.
2.4 GHz band (for example, IEEE802.11b, IEEE802.11b / g, IEEE802.11b / g / n, etc.)
5 GHz band (for example, IEEE802.11a, IEEE802.11a / n, IEEE802.11a / n / ac, etc.)

The printer 20 supports wireless communication in the following one frequency band.
2.4 GHz band (for example, IEEE802.11b, IEEE802.11b / g, IEEE802.11b / g / n, etc.)

  The terminal 10 can wirelessly connect and communicate with the printer 20 using either Wi-Fi connection (2.4 GHz band) or direct connection (2.4 GHz band) connection form. In addition, the terminal 10 can communicate with the apparatus connected to AP30 by Wi-Fi connection (5 GHz band) using Wi-Fi connection (5 GHz band).

  The printer 20 can wirelessly connect and communicate with each terminal 10 using a connection form of either Wi-Fi connection (2.4 GHz band) or direct connection (2.4 GHz band). The printer 20 may be able to establish both a Wi-Fi connection (2.4 GHz band) and a direct connection (2.4 GHz band) at the same time. That is, the printer 20 can communicate with a certain terminal 10 via a Wi-Fi connection (2.4 GHz band) while communicating with another terminal 10 via a direct connection (2.4 GHz band). Also good. In the direct connection, the printer 20 can establish a communication connection within a predetermined number of simultaneous connections (for example, four).

  FIG. 2 is a block diagram illustrating a configuration example of a wireless communication system.

  The terminal 10 includes a control unit 11, an operation unit 12, an NFC (Near Field Communication) communication unit 13 (corresponding to the “near field communication unit” of the present invention), and a radio communication unit 14 (“wireless” of the present invention). And a mobile communication unit 15. The control unit 11 includes an acquisition unit 111, a confirmation unit 112, and a connection processing unit 113.

  The control unit 11 controls the operation of the terminal 10 in an integrated manner. The control unit 11 includes, for example, a central processing unit (CPU) that is an arithmetic device, a random access memory (RAM) that is a volatile storage device, a read only memory (ROM) that is a non-volatile storage device, It can be realized by a computer including an interface (I / F) circuit for connecting other units, a bus for connecting them to each other, and the like. The computer may include various dedicated processing circuits such as an image processing circuit. The control unit 11 may be realized by an ASIC (Application Specific Integrated Circuit) or the like.

  At least a part of the functions of the control unit 11 can be realized, for example, by the CPU reading a predetermined program stored in the ROM and executing it. The predetermined program is, for example, an application program that runs on an OS (Operating System), which is read from a portable storage medium and installed in the terminal 10, or downloaded from a server on the network and installed in the terminal 10. can do. At least a part of the function of the control unit 11 may be realized by a dedicated processing circuit, for example. At least a part of the function of the control unit 11 may be realized by both the CPU and the dedicated processing circuit, for example.

  The operation unit 12 receives a user operation input and outputs an operation signal corresponding to the operation to the control unit 11. The operation unit 12 displays the processing results of the control unit 11 as characters, graphs, tables, animations, and other images. The operation unit 12 includes, for example, an input unit or input device including a key, a touch sensor, a touch panel, and the like, and an output unit or output device including, for example, an LCD (Liquid Crystal Display), an OLED (Organic Electro-Luminescence Display), or the like. Can be realized.

  The NFC communication unit 13 is a reader / writer (also referred to as an NFC reader / writer) that performs communication based on the NFC standard. When the NFC communication unit 13 comes close to an NFC tag that is not supplied with power, the NFC communication unit 13 can operate by supplying power to the NFC tag by electromagnetic induction.

  The NFC communication unit 13 includes, for example, an antenna, a memory (corresponding to the “storage unit” of the present invention), and a logic circuit, and performs short-range wireless communication. The antenna transmits and receives signals compliant with the NFC standard. The logic circuit writes data into the memory or reads data from the memory in accordance with an instruction from the control unit 11. In addition, the logic circuit transmits / receives data to / from the NFC tag via the antenna in response to an instruction from the control unit 11. The logic circuit writes data to the NFC tag and reads data from the NFC tag (for example, called an RF communication mode). The logic circuit can also control bidirectional communication between the host device equipped with the NFC tag and the reader / writer via the NFC tag (for example, called tunnel mode). Since the NFC reader / writer and its various communication modes can be realized using existing technology, detailed description thereof is omitted.

  For example, the control unit 11 can write data into the NFC communication unit 23 of the printer 20 or read data from the NFC communication unit 23 of the printer 20 via the NFC communication unit 13 (RF communication mode).

  The wireless communication unit 14 is a communication module in which a communication function compliant with the Wi-Fi standard and the Wi-Fi Direct standard, which are wireless LAN standards, is mounted. The wireless communication unit 14 supports wireless communication in both the 5 GHz band and the 2.4 GHz band. The control unit 11 can establish the Wi-Fi connection and the direct connection described above with the external device via the wireless communication unit 14, and can communicate with the external device. Since Wi-Fi connection and direct connection can be realized using existing technology, detailed description thereof is omitted.

  The mobile communication unit 15 is a communication module that performs communication via a mobile phone line. The mobile phone line complies with communication standards such as 3G and 4G, for example.

  The acquisition unit 111 acquires setting information related to direct connection of the printer 20 and identification information related to Wi-Fi connection of the printer 20. The acquisition unit 111 receives, for example, direct connection setting information (for example, network settings such as SSID and password) and the Wi-Fi of the wireless communication unit 24 from the NFC communication unit 23 of the printer 20 via the NFC communication unit 13. Identification information (for example, MAC address) used for connection communication is read. The setting information may be information related to an effective connection form currently provided by the wireless communication unit 24 of the printer 20 or may be information related to an invalid connection form. The effective connection form in the printer 20 is a connection form in which a communication connection with an external device is actually established, and a connection form in which a communication connection is ready in response to a connection request from the external device. . The invalid connection form in the printer 20 is a connection form in which a communication connection with an external device is not established and a connection form in which a communication connection is not ready to be established in response to a connection request from the external device.

  In addition, the acquisition unit 111 transmits setting information related to the Wi-Fi connection of the terminal 10 to the printer 20. For example, the acquisition unit 111 receives Wi-Fi connection setting information (for example, network settings such as SSID and password, and frequency band identification information (“2.4 GHz”) from the storage unit such as the RAM of the terminal 10 or the wireless communication unit 14. "Band" or "5 GHz band"))). The acquisition unit 111 may determine the identification information of the frequency band by determining the frequency band corresponding to the Wi-Fi connection standard. This setting information is information relating to an effective connection form currently provided by the wireless communication unit 14. The effective connection mode in the terminal 10 is a connection mode in which a communication connection with an external device is actually established. The invalid connection form in the terminal 10 is a connection form in which a communication connection with an external device is not established. For example, the acquisition unit 111 writes the acquired Wi-Fi connection setting information in the NFC communication unit 23 of the printer 20 via the NFC communication unit 13.

  The confirmation unit 112 confirms whether or not communication with the printer 20 is possible through the same Wi-Fi connection as the terminal 10. For example, the confirmation unit 112 broadcasts a confirmation packet for requesting a response from the receiving device to the currently valid Wi-Fi network via the wireless communication unit 14. Further, the confirmation unit 112 receives a response packet from the Wi-Fi network via the wireless communication unit 14. The confirmation unit 112 determines whether or not the MAC address of the printer 20 acquired by the acquisition unit 111 matches the MAC address of the transmission source added (or included) to each received response packet. Thus, it is confirmed whether or not communication with the printer 20 is possible.

  The connection processing unit 113 controls the wireless communication unit 14 to perform wireless communication connection processing. For example, when the confirmation processing unit 112 determines that communication with the printer 20 is not possible, the connection processing unit 113 uses the direct connection setting information acquired by the acquisition unit 111 to establish a communication connection according to the connection form. Thereby, the terminal 10 and the printer 20 can perform communication by direct connection (2.4 GHz band).

  The connection processing unit 113 controls the wireless communication unit 14 and, for example, Wi-Fi connection setting information (for example, SSID) input via the operation unit 12, the NFC communication unit 13, the wireless communication unit 14, and the like. , A password, etc.) may be used to establish a communication connection with the AP 30 according to the connection form. Thereby, the terminal 10 can perform communication by Wi-Fi connection (2.4 GHz band or 5 GHz band).

  The printer 20 includes a control unit 21, an operation unit 22, an NFC communication unit 23 (corresponding to the “short-range wireless communication unit” of the present invention), and a wireless communication unit 24 (corresponding to the “wireless communication unit” of the present invention). And a printing unit 25. The control unit 21 includes an acquisition unit 211, a selection unit 212, and a connection processing unit 213.

  The control unit 21 controls the operation of the printer 20 in an integrated manner. The control unit 21 includes, for example, a CPU that is an arithmetic device, a RAM that is a volatile storage device, a ROM that is a non-volatile storage device, an interface circuit that connects the control unit 21 and other units, and a bus that connects these units to each other. , Etc., can be realized by a computer. The control unit 21 may include various processing circuits such as an image processing circuit. The control unit 21 may be realized by an ASIC or the like.

  At least a part of the functions of the control unit 21 can be realized, for example, by the CPU reading a predetermined program stored in the ROM and executing it. The predetermined program can be read from a portable storage medium and installed in the printer 20, for example, or downloaded from a server on the network and installed in the printer 20. At least a part of the function of the control unit 21 may be realized by a dedicated processing circuit, for example. At least a part of the functions of the control unit 21 may be realized by both the CPU and the processing circuit, for example.

  The operation unit 22 receives a user operation input and outputs an operation signal corresponding to the operation to the control unit 21. The operation unit 22 displays the processing result of the control unit 21 as characters, graphs, tables, animations, and other images. The operation unit 22 can be realized by an input unit or input device including a key, a touch sensor, a touch panel, and the like, and an output unit or output device including, for example, an LCD or an OLED.

  The NFC communication unit 23 is a communication tag (also referred to as an NFC tag) that performs communication based on the NFC standard. Even when power is not supplied from the printer 20, the NFC communication unit 23 can operate because power is supplied by electromagnetic induction from an NFC reader / writer approaching the NFC communication unit 23.

  The NFC communication unit 23 includes, for example, an antenna, a memory (corresponding to the “storage unit” of the present invention), and a logic circuit, and performs short-range wireless communication. The antenna transmits and receives signals compliant with the NFC standard. The logic circuit writes data into the memory, reads data from the memory, and outputs it according to an instruction from the NFC reader / writer of the external device (terminal 10) via the antenna (for example, called an RF communication mode) ). In addition, the logic circuit writes data into the memory or reads and outputs data from the memory in accordance with an instruction from the host device (control unit 21) (referred to as a serial communication mode, for example). The logic circuit can also control bidirectional communication between the external device and the host device (for example, called tunnel mode). Since the NFC tag and its various communication modes can be realized using existing technology, detailed description thereof is omitted.

  For example, the control unit 21 can write data to the NFC communication unit 23 or read data from the NFC communication unit 23 (serial communication mode).

  The wireless communication unit 24 is a communication module in which a communication function based on the Wi-Fi standard and the Wi-Fi Direct standard, which are wireless LAN standards, is mounted. The wireless communication unit 24 supports wireless communication in the 2.4 GHz frequency band. The control unit 21 can establish the Wi-Fi connection and the direct connection described above with the external device via the wireless communication unit 24 and can communicate with the external device. Since Wi-Fi connection and direct connection can be realized using existing technology, detailed description thereof is omitted.

  The printing unit 25 forms an image on the print medium in accordance with an instruction from the control unit 21. The printing unit 25 is, for example, a printing engine of an ink jet method, a laser method, or the like, and includes a mechanical part, a sensor, a motor, a drive circuit, a control circuit, and the like.

  The acquisition unit 211 acquires setting information related to the Wi-Fi connection of the terminal 10. In the acquisition unit 211, for example, setting information related to the Wi-Fi connection of the terminal 10 (for example, SSID, password, frequency band identification information (indicating "2.4 GHz band" or "5 GHz band")) is the NFC communication unit 23 Is read from the NFC communication unit 23.

  The acquisition unit 211 reads the setting information related to the direct connection of the printer 20 and the identification information related to the Wi-Fi connection of the printer 20 from the storage unit such as the RAM of the printer 20 or the wireless communication unit 24, and the NFC communication unit 23 is written in the storage unit.

  The selection unit 212 selects the connection mode (Wi-Fi connection or direct connection) of the printer 20 based on the setting information related to the Wi-Fi connection of the terminal 10 acquired by the acquisition unit 211. For example, when the frequency band identification information indicates “2.4 GHz band”, the selection unit 212 selects a Wi-Fi connection, and when the frequency band identification information indicates “5 GHz band”, the selection unit 212 selects direct connection. .

  The connection processing unit 213 controls the wireless communication unit 24 to perform connection processing for communication of the connection form selected by the selection unit 212. For example, when the Wi-Fi connection is selected, the connection processing unit 213 uses the setting information (for example, SSID, password, etc.) regarding the Wi-Fi connection of the terminal 10 acquired by the acquisition unit 211 to perform the connection mode. Establish a communication connection with. Thereby, the terminal 10 and the printer 20 can perform communication by Wi-Fi connection (2.4 GHz band) via the AP 30. For example, when direct connection is selected, the connection processing unit 213 uses the setting information (for example, SSID, password, etc.) regarding the direct connection of the printer 20 acquired by the acquisition unit 211 to perform communication connection according to the connection form. Establish. Thereby, the terminal 10 and the printer 20 can perform communication by direct connection (2.4 GHz band).

  For example, when the connection processing unit 213 receives the confirmation packet described above via the Wi-Fi connection of the wireless communication unit 24, the identification information (for example, a MAC address or the like) used for the Wi-Fi connection of the wireless communication unit 24 ) Is added (or included), and sent to the Wi-Fi network with the MAC address of the source of the confirmation packet as the destination.

  Operations of the terminal 10 and the printer 20 will be described.

  FIG. 3 is a flowchart illustrating an example of printer connection processing. The process of this flowchart is executed when the printer 20 is in a power-on state. At the start of the processing of this flowchart, the Wi-Fi connection (2.4 GHz band) and direct connection (2.4 GHz band) of the printer 20 may be valid or invalid.

  The printer 20 acquires setting information from the terminal 10 via NFC (step S1). For example, the user holds the NFC communication unit 13 of the terminal 10 over the NFC communication unit 23 of the printer 20. The control unit 11 of the terminal 10 controls the NFC communication unit 13 to set setting information (for example, SSID, password, frequency band identification information (“2.4 GHz band” or “5 GHz band”) related to the Wi-Fi connection of the terminal 10. ")") Is written into the NFC communication unit 23 (RF communication mode). The NFC communication unit 23 notifies the control unit 21 that information has been written. The acquisition unit 211 receives the notification from the NFC communication unit 23 and reads the setting information from the NFC communication unit 23 (serial communication mode).

  Then, the printer 20 determines whether or not the frequency band of the terminal 10 is the 2.4 GHz band (step S2). For example, the selection unit 212 determines whether the identification information of the frequency band of the terminal 10 acquired in step S1 indicates “2.4 GHz band” or “5 GHz band”.

  When the frequency band identification information indicates “2.4 GHz band” (Y in step S2), the printer 20 establishes a Wi-Fi connection using the setting information of the terminal 10 (step S3). For example, the connection processing unit 213 uses the setting information (eg, SSID, password, etc.) regarding the Wi-Fi connection of the terminal 10 acquired in step S1 to establish a communication connection according to the connection form. And the connection process part 213 complete | finishes the process of this flowchart. If the Wi-Fi connection indicated by the setting information of the terminal 10 is already valid, the connection processing unit 213 may end the processing of this flowchart without executing step S3.

  Note that since the Wi-Fi connection (2.4 GHz band) indicated by the setting information is already valid in the terminal 10, when the printer 20 establishes a Wi-Fi connection (2.4 GHz band) with the AP 30, The terminal 10 and the printer 20 can communicate by Wi-Fi connection via the AP 30.

  When the frequency band identification information indicates “5 GHz band” (N in step S2), the printer 20 enables the direct connection (step S4). For example, the connection processing unit 213 performs setting so that a connection request for direct connection (2.4 GHz band) can be accepted via the wireless communication unit 24 (for example, the access point function inside the printer 20 is enabled) ). And the connection process part 213 complete | finishes the process of this flowchart. If the direct connection is already valid, the connection processing unit 213 may end the process of this flowchart without executing step S4.

  When the terminal 10 attempts a direct connection with the printer 20 in step S16 of FIG. 4 described later, the connection processing unit 213 performs a direct connection (2.4 GHz band between the wireless communication unit 24 and the terminal 10). ).

  FIG. 4 is a flowchart illustrating an example of a terminal connection process. The process of this flowchart is started when a predetermined application program is started in the terminal 10, for example. It is assumed that the Wi-Fi connection (2.4 GHz band or 5 GHz band) of the terminal 10 is valid at the start of the processing of this flowchart. It is assumed that the direct connection (2.4 GHz band) of the terminal 10 is invalid.

  The terminal 10 transmits the setting information of the terminal 10 to the printer 20 via NFC (Step S11). For example, the user holds the NFC communication unit 13 of the terminal 10 over the NFC communication unit 23 of the printer 20. The acquisition unit 111 stores valid Wi-Fi connection setting information (for example, SSID, password, frequency band identification information (“2.4 GHz band” or “5 GHz band”) stored in the RAM or the like of the terminal 10. Read))). Further, the acquisition unit 111 writes the setting information to the memory of the NFC communication unit 23 via the NFC communication unit 13 (RF communication mode).

  Further, the terminal 10 acquires setting information from the printer 20 via NFC (step S12). For example, the acquiring unit 111 performs direct connection setting information (for example, SSID, password, etc.) and Wi-Fi connection communication of the wireless communication unit 24 from the NFC communication unit 23 of the printer 20 via the NFC communication unit 13. Identification information to be used (for example, MAC address) is read (RF communication mode).

  Then, the terminal 10 broadcasts to a valid Wi-Fi network (step S13). For example, the confirmation unit 112 broadcasts a confirmation packet for requesting a response from the receiving device to the currently valid Wi-Fi connection (2.4 GHz band or 5 GHz band) via the wireless communication unit 14.

  Then, the terminal 10 determines whether a response is received from the printer 20 (step S14). For example, the confirmation unit 112 determines whether a response packet has been received from the Wi-Fi network via the wireless communication unit 14. Further, when receiving the response packet, the confirmation unit 112 matches the MAC address of the printer 20 acquired in step S12 with the MAC address of the transmission source added (or included) to the received response packet. It is determined whether or not to do. If these MAC addresses match, the confirmation unit 112 determines that a response has been received from the printer 20.

  If it is determined that a response has been received from the printer 20 (Y in step S14), the confirmation unit 112 ends the process of this flowchart. In this case, since the Wi-Fi connection (2.4 GHz band) between the printer 20 and the AP 30 has already been established, the terminal 10 and the printer 20 can connect to the Wi-Fi via the AP 30 (2.4 GHz band). Can communicate with each other. If the printer 20 provides a Wi-Fi connection (5 GHz band), the terminal 10 and the printer 20 can communicate with each other via a Wi-Fi connection (5 GHz band) via the AP 30.

  If it is determined that no response has been received from the printer 20 (N in step S14), the confirmation unit 112 determines a timeout for the response time (step S15). For example, the confirmation unit 112 may start measuring elapsed time at the timing when step S13 is executed, and determine whether or not this elapsed time exceeds a predetermined timeout time.

  When it is determined that the response time has not timed out (N in step S15), the confirmation unit 112 executes the process of step S14 again.

  If it is determined that the response time has timed out (Y in step S15), the terminal 10 establishes a direct connection using the setting information of the printer 20 (step S16). For example, the connection processing unit 113 uses the setting information (for example, SSID, password, etc.) regarding the direct connection of the printer 20 acquired in step S12 to establish a communication connection according to the connection form. And the connection process part 113 complete | finishes the process of this flowchart. In this way, the terminal 10 and the printer 20 can communicate by direct connection (2.4 GHz band).

  The embodiment of the present invention has been described above. In the wireless communication system of the present embodiment, when the user holds the terminal over the printer, the printer uses the Wi-Fi connection or direct connection based on the effective Wi-Fi connection frequency band of the terminal acquired from the terminal. Determine whether to use. When the Wi-Fi connection is selected, the printer establishes a Wi-Fi connection with the AP based on the Wi-Fi connection setting information acquired from the terminal. The terminal can communicate with the printer through the Wi-Fi connection while maintaining a valid Wi-Fi connection. On the other hand, when direct connection is selected, the printer enables direct connection. The terminal can establish a direct connection and communicate with the printer based on the direct connection setting information acquired from the printer. The user can easily set a wireless connection without being aware of the frequency band of the wireless LAN.

  The present invention is not limited to the above-described embodiment, and can be implemented in various modes without departing from the scope of the invention. For example, the following modifications may be added to the above embodiments. Moreover, you may combine 2 or more suitably for embodiment and each modification.

  In the above embodiment, the terminal 10 uses the NFC RF communication mode, and the printer 20 uses the NFC serial communication mode. However, the terminal 10 and the printer 20 may use the NFC tunnel mode. . For example, the control unit 11 communicates with the control unit 21 via the NFC communication unit 13 and the NFC communication unit 23. The acquisition unit 111 and the acquisition unit 211 transmit and receive setting information and the like to each other.

  In the above-described embodiment, the terminal 10 and the printer 20 may be able to communicate by direct connection (Wi-Fi Direct mode), for example, as a peer-to-peer connection form.

  The configuration of the wireless communication system described in the above embodiment is classified according to the main processing contents in order to facilitate understanding of the configuration. The present invention is not limited by the way of classification and names of the constituent elements. The configuration of the wireless communication system can be classified into more components depending on the processing content. Moreover, it can also classify | categorize so that one component may perform more processes. Further, the processing of each component may be executed by one hardware or may be executed by a plurality of hardware. Further, the processing or function sharing of each component is not limited to the above as long as the object and effect of the present invention can be achieved. For example, at least a part of the functions of the terminal 10 may be installed in the printer 20 or vice versa. For example, an NFC tag may be mounted on the terminal 10 and an NFC reader / writer may be mounted on the printer 20.

  The processing units of the flowcharts described in the above embodiments are divided according to main processing contents in order to facilitate understanding of the processing of the wireless communication system. The present invention is not limited by the way of dividing the processing unit or the name. The processing of the wireless communication system can be divided into more processing units according to the processing content. Moreover, it can also divide | segment so that one process unit may contain many processes. Further, the processing order of the above flowchart is not limited to the illustrated example.

  The electronic device of the present invention is not limited to a printer. The electronic device can include a device that implements both short-range wireless communication and wireless LAN communication, such as a scanner, a multifunction peripheral, a projector, a television, and a video recorder. Further, the present invention is not limited to NFC, and other standards may be used for short-range wireless communication.

DESCRIPTION OF SYMBOLS 10 ... Terminal, 11 ... Control part, 12 ... Operation part, 13 ... Communication part, 14 ... Wireless communication part, 15 ... Mobile communication part, 20 ... Printer, 21 ... Control part, 22 ... Operation part, 23 ... Communication part, 24 ... wireless communication unit, 25 ... printing unit, 111 ... acquisition unit, 112 ... confirmation unit, 113 ... connection processing unit, 211 ... acquisition unit, 212 ... selection unit, 213 ... connection processing unit

Claims (4)

A near field communication unit;
A wireless communication unit that provides a first connection form that communicates with an external device via an access point, and a second connection form that communicates with the external device on a peer-to-peer basis;
An acquisition unit that acquires setting information including a radio frequency band used by the external device for connection to the access point from the external device via the short-range wireless communication unit;
Based on the radio frequency band of the external device, a selection unit that selects the first connection form or the second connection form as a connection form used by the wireless communication unit for communication with the external device;
An electronic device comprising: a connection processing unit that performs connection processing of communication of the selected connection form. The electronic device according to claim 1,
The access point supports communication in the first frequency band and the second frequency band,
The wireless communication unit supports communication in the first frequency band,
The selection unit selects the first connection form when the radio frequency band of the external device corresponds to the first frequency band, and the radio frequency band of the external device is the second frequency. An electronic device that selects the second connection form when it corresponds to a band. The electronic device according to claim 1,
The setting information includes a network setting used by the external device,
The connection processing unit establishes a connection with the access point using the network setting when the first connection form is selected, and an internal access point when the second connection form is selected. Electronic equipment that activates the function. A wireless communication method for an electronic device,
The electronic device is
A near field communication unit;
A first communication form that communicates with an external device via an access point, and a wireless communication unit that provides a second connection form that communicates with the external device on a peer-to-peer basis,
The wireless communication method includes:
Obtaining setting information including a radio frequency band used by the external device for connection with the access point from the external device via the short-range wireless communication unit;
Selecting the first connection form or the second connection form as a connection form used by the wireless communication unit for communication with the external device based on the radio frequency band of the external device;
Performing a connection process of communication of the selected connection form.

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