Patent Publication Number: US-2016249162-A1

Title: Communication device and communication method

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a communication system. 
     2. Description of the Related Art 
     A technique has been known such that, for connecting a device to an ad-hoc network that is formed of a radio network, such as a wireless local area network (LAN), authentication is automatically executed so as to obtain connection permission by using short-range radio communication with a communication area that is smaller than that of the ad-hoc network. 
     A technique for establishing a network connection between a communication device and a receiving device has been known such that, for receiving, by the receiving device, a content that is transmitted by the communication device, the receiving device approaches to an authentication device, which is different from the communication device, to establish the network connection (cf. Patent Document 1 (Japanese Unexamined Patent Publication No. 2013-242925), for example). 
     SUMMARY OF THE INVENTION 
     For a case where a device is located in a communication area of short range radio communication, connection permission may be automatically provided for the device, even if the device is located at a position that may not be viewed due to a shield, such as a wall, which can be a security problem of a radio network. 
     In a communication system in which connection permission for connecting a device to an ad-hoc network, which is formed of a radio network, can be obtained from a network other than the ad-hoc network, it is desirable to enhance security for the radio communication network. 
     According to an aspect of the present invention, there is provided a communication device including a first communication unit configured to execute radio communication by using a first communication scheme, the first communication scheme allowing the radio communication to be executed within a first communication range; a second communication unit configured to execute radio communication by using a second communication scheme, the second communication scheme allowing the radio communication to be executed within a second communication range; a setting information retrieval unit configured to obtain, in response to detecting that the communication device is located within a predetermined area, setting information for establishing the radio communication by using the first communication scheme; and a disconnection processing unit configured to disconnect radio communication that is established, by the first communication unit, with another communication device, wherein the first communication unit is configured to execute, by using the first communication scheme, radio communication with the other communication device that obtains the setting information, and wherein, upon detecting that the communication device is not located within the second communication range, the disconnection processing unit is configured to disconnect the radio communication that is established with the other communication device by the first communication unit. 
     According to another aspect of the present invention, there is provided a communication method to be executed by a communication device including a first communication unit configured to execute radio communication by using a first communication scheme, the first communication scheme allowing the radio communication to be executed within a first communication range; and a second communication unit configured to execute radio communication by using a second communication scheme, the second communication scheme allowing the radio communication to be executed within a second communication range, wherein the communication method includes a step of obtaining, in response to detecting that the communication device is located within a predetermined area, setting information for establishing the radio communication by using the first communication scheme; a step, by the first communication unit, of executing, by using the first communication scheme, radio communication with another communication device that receives the setting information; and a step of disconnecting, upon detecting that the communication device is not located within the second communication range, the radio communication that is established with the other communication device by the first communication unit. 
     According to an embodiment of the present invention, in a communication system in which connection permission for connecting a device to an ad-hoc network, which is formed of a radio network, can be obtained from a network other than the ad-hoc network, security can be enhanced for the radio communication network. 
     Other objects, features and advantages of the present invention will become more apparent from the following detailed description when read in conjunction with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagram showing a configuration example of a radio communication system according to an embodiment; 
         FIG. 2  is a diagram showing hardware configuration examples of a first radio communication device and a second radio communication device according to the embodiment; 
         FIG. 3  is a diagram showing a hardware configuration example of a third radio communication device according to the embodiment; 
         FIG. 4  is a sequence chart illustrating an operation of the radio communication system according to the embodiment; 
         FIG. 5  is a sequence chart illustrating an operation of the radio communication system according to the embodiment; 
         FIG. 6  is a diagram showing a hardware configuration example (version 1) of an information processing device according to the embodiment; 
         FIG. 7  is a functional block diagram (version 1) showing the radio communication system according to the embodiment; 
         FIG. 8  is a diagram showing a hardware configuration example (version 2) of the information processing device according to the embodiment; 
         FIG. 9  is a diagram showing a hardware configuration example (version 3) of the information processing device according to the embodiment; 
         FIG. 10  is a functional block diagram (version 2) showing the radio communication system according to the embodiment; 
         FIG. 11  is a diagram showing a hardware configuration example (version 4) of the information processing device according to the embodiment; 
         FIG. 12  is a functional block diagram (version 3) showing the radio communication system according to the embodiment; 
         FIG. 13  is a diagram showing a hardware configuration example (version 5) of the information processing device according to the embodiment; and 
         FIG. 14  is a functional block diagram (version 4) showing the radio communication system according to the embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Next, an embodiment of the present invention is described by referring to the accompanying drawings. The embodiment that is described below is merely an example, and embodiments to which the present invention is applied are not limited to the embodiment that is described below. Note that, in all the figures for describing the embodiment, the same reference numerals may be attached to components having the same functions, and thereby duplicate description may be omitted. 
     Overview 
     Radio Communication System 
     In a radio communication system according to the embodiment, within a first radio communication area for executing communication by a first communication scheme (e.g., a wireless local area network (LAN)), a radio network with a second radio communication area that is smaller than the first radio communication area can be formed by a second radio communication scheme (e.g., a personal area network (PAN)). Furthermore, the radio communication system can form a predetermined area. A device can communicate in the wireless LAN and the wireless PAN, and upon entering the predetermined area, the device can obtain setup information, such as authentication information and setting information, which is set for the wireless LAN. The device can be connected to the wireless LAN by using the setup information (e.g., the authentication information and the setting information) that is obtained in the predetermined area. Furthermore, upon exiting from the wireless PAN, the device can execute a process for disconnecting the communication with the wireless LAN. Namely, the device is allowed, by using the setup information that is obtained in the predetermined area, to communicate through the wireless LAN within a restricted radio communication area of the first radio communication area of the wireless LAN such that the restricted radio communication area overlaps the second radio communication area of the wireless PAN. 
       FIG. 1  shows a radio communication system according to the embodiment. The radio communication system according to the embodiment may include a first radio communication device  100 ; a second radio communication device  200 ; third radio communication devices  300   a - 300   e ; and an information processing device  400 . Hereinafter, any third radio communication device among the third radio communication devices  300   a - 300   e  may be represented by “the third radio communication device  300 .” 
     The first radio communication device  100  can be installed in an access point or a radio base station, and the first radio communication device  100  can form a first radio communication area  150  by a first radio communication scheme (e.g., the wireless LAN). The second radio communication device  200  can be installed in an access point or a radio base station, and the second radio communication device  200  can form, within the first radio communication area  150 , a second radio communication area  250  that is smaller than the first radio communication area  150  by a second radio communication scheme, such as short range radio communication (e.g., Bluetooth (registered trademark)). In the example that is shown in  FIG. 1 , the second radio communication area  250  is included in the first radio communication area  150 . 
     The third radio communication device  300  can be installed in a mobile communication device, such as a smartphone, a tablet terminal, a mobile game device, and a laptop personal computer (PC); and the third radio communication device  300  can wirelessly communicate with the first radio communication device  100  and the second radio communication device  200 . Note that, in response to detecting that any one of the third radio communication devices  300   a - 300   e  enters a predetermined area  450 , the one of the third radio communication devices  300   a - 300   e  can obtain, from the information processing device  400 , setup information (e.g., authentication information and setting information) that can be used for establishing a connection with the first radio communication device  100 . In response to detecting that the one of the third radio communication devices  300   a - 300   e  is located at an overlap area where the first radio communication area  150  overlaps the second radio communication area  250 , the one of the third radio communication devices  300   a - 300   e  can execute a connection process with the first radio communication device  100  by using the setup information that is obtained from the information processing device  400 . 
     The information processing device  400  can be installed in a mobile device, such as a smartphone, a tablet terminal, a mobile game device, and a laptop personal computer (PC); and the information processing device  400  can communicate with the third radio communication device  300 . Note that, in response to detecting that the third radio communication device  300  enters the predetermined area  450 , the information processing device  400  may allow the third radio communication device  300  to obtain the setup information. 
     In the example that is shown in  FIG. 1 , the overlap area is the same as the second radio communication area  250  because the second radio communication area  250  is included in the first radio communication area  150 . In addition, the predetermined area  450  is included in the second radio communication area  250 . 
     Though the third radio communication device  300   a  is located within the first radio communication area  150 , the third radio communication device  300   a  may not communicate with the first radio communication device  100  because the third radio communication device  300   a  is not located in the overlap area. Though the third radio communication device  300   b  is located within the overlap area, the third radio communication device  300   b  may not execute a connection process with the first radio communication device  100  because the third radio communication device  300   b  has not obtained the setup information from the information processing device  400  that covers the predetermined area  450 . The third radio communication devices  300   c  and  300   d  are located within the overlap area, and the third radio communication devices  300   c  and  300   d  obtain the setup information from the information processing device  400 . Thus, the third radio communication devices  300   c  and  300   d  can execute a connection process with the first radio communication device  100 . The third radio communication device  300   e  can obtain the setup information, and execute a connection process with the first radio communication device  100  because the third radio communication device  300   e  is located within the predetermined area  450 . 
     Hereinafter, a case is described as an example where a wireless LAN is adopted as the first radio communication scheme, and Bluetooth (registered trademark) is adopted as the second radio communication scheme. Here, contactless radio (near field communications (NFC)) may be adopted as the second radio communication scheme. 
     Hardware Configuration According to the Embodiment 
     Next, a hardware configuration according to the embodiment is described.  FIG. 2  is a diagram showing hardware configuration examples of the first radio communication device  100  and the second radio communication device  200  according to the embodiment. As shown in  FIG. 2 , the first radio communication device  100  according to the embodiment may include a first communication circuit  102  for transmitting and receiving radio signals through an antenna in accordance with a standard of the first communication scheme; and a first central processing unit (CPU)  104  for controlling operations of the whole first radio communication device  100 . Additionally, the first radio communication device  100  may include a first read-only memory (ROM)  106  that stores various types of data, such as a program for the first radio communication device that is used for driving the first CPU  104 , transmit data, and so forth. Additionally, the first radio communication device  100  may include a first interface (I/F)  108  for executing data transmission through the communication network  2 ; and a first communication controller  110  for operating the first radio communication device  100  as an access point of the first radio communication scheme. The first communication circuit  102 , the first CPU  104 , the first ROM  106 , the first I/F  108 , and the first communication controller  110  can be connected by a first bus  140 . The program for the first radio communication device  100  may be stored in a computer readable recording medium, such as a storage medium, as a file in an installable format or in an executable format, and the program for the first radio communication device  100  may be distributed. 
     The second radio communication device  200  according to the embodiment may include a second communication circuit  202  for transmitting and receiving radio signals through an antenna in accordance with a standard of the second communication scheme; and a second CPU  204  for controlling operations of the whole second radio communication device  200 . Additionally, the second radio communication device  200  may include a second read-only memory (ROM)  206  that stores various types of data, such as a program for the second radio communication device  200  that is used for driving the second CPU  104 , transmit data, and so forth. Additionally, the second radio communication device  200  may include a second interface (I/F)  208  for executing data transmission through the communication network  2 ; and a second communication controller  210  for operating the second radio communication device  200  as an access point of the second radio communication scheme. The second communication circuit  202 , the second CPU  204 , the second ROM  206 , the second I/F  208 , and the second communication controller  210  can be connected by a second bus  240 . The program for the second radio communication device  200  may be stored in a computer readable recording medium, such as a storage medium, as a file in an installable format or in an executable format, and the program for the second radio communication device  200  may be distributed. 
     Here, the first radio communication device  100  and the second radio communication device  200  can be configured as a single radio communication device. In this case, the first I/F  108  and the second I/F  208  may be directly connected without passing through the communication network  2 . 
       FIG. 3  shows a hardware configuration example of the third radio communication device  300  according to the embodiment. As shown in  FIG. 3 , the third radio communication device  300  according to the embodiment may include a first radio communication unit  302  for executing radio communication in accordance with the standard of the first radio communication scheme; a fourth communication circuit  304  for transmitting and receiving radio signals through an antenna in accordance with the standard of the second communication scheme; and a third CPU  306  for controlling operations of the whole third radio communication device  300 . The third radio communication device  300  may include a third ROM  308  that stores a program that is used for driving the third CPU  306 , such as an initial program loader (IPL); and a RAM  310  that can be used as a work area of the third CPU  306 . The third radio communication device  300  may include an electrically erasable programmable read-only memory (EEPROM)  312  that stores various types of data, such as a program for the third radio communication device  300 , image data, audio data, and so forth; a short range communication circuit  314  for executing short range communication based on a standard, such as Ultra Wide Band (UWB), visible light communication, infrared communication (Infrared Data Association (IrDA)), and so forth; and an acceleration/direction sensor  316 . The third radio communication device  300  may include a media drive  318  for controlling reading out data from and writing (storing) data in a recording medium  320 , such as a flash memory; a sound collecting element  322  for collecting sound waves in a specific direction; and a built-in image sensor  324  for capturing an image of an object in accordance with control of the third CPU  306  to obtain image data. As an image sensor, a complementary metal oxide semiconductor (CMOS), a charge coupled device (CCD), and so forth can be used. The third radio communication device  300  may include a touch panel  326  that displays various types of information, such as a cursor, a menu, a window, a character, and an image, and that receives an operation of a user; and a battery  328  that is a power source of the third radio communication device  300 . The third radio communication device  300  may include an automatic recognition circuit  330  that automatically recognizes a graphic image, such as a Quick Response (QR) code and a bar code; a reader  332  for reading information from a tag, such as an RF tag and an IC tag; and a bus line  350  for electrically connecting the above-described components as shown in  FIG. 3 , such as an address bus and a data bus. 
     Here, the program for the third radio communication device  300  may be stored in a computer readable recording medium, such as a recording medium  320 , as a file in an installable format or in an executable format, and the program for the third radio communication device  300  may be distributed. Furthermore, the program for the third radio communication device  300  may be stored in the third ROM  308 , instead of the EEPROM  312 . 
     Operation of the Radio Communication System (Version 1) 
       FIG. 4  shows a connection process in the radio communication system according to the embodiment. In the example that is shown in  FIG. 4 , communication can be established by the third radio communication device  300   a  by executing the connection process with the first radio communication device  100 . The connection process may be applied for a case where one or more of the third radio communication devices  300   b - 300   e  execute a connection process with the first radio communication device  100 . 
     At step S 1 , the second radio communication device  200  that forms the second radio communication area  250  transmits, to the third radio communication device  300   a , communication range information that indicates the second radio communication area  250 . For example, the second radio communication device  200  may notify peripheral devices of the presence of the own device by transmitting advertisement packets through three advertisement channels. The advertisement packet may include the communication range information that indicates the second radio communication area  250 . 
     At step S 2 , the third radio communication device  300   a  receives the communication range information that is transmitted by the second radio communication device  200 , and the third radio communication device  300   a  transmits, to the second radio communication device  200 , a response signal with respect to the communication range information. The third radio communication device  300   a  can recognize that the third radio communication device  300   a  is located within the second radio communication area  250  by referring to the communication range information. 
     At step S 3 , in response to detecting that the third radio communication device  300   a  is located within the predetermined area where the third radio communication device  300   a  can receive the setup information from the information processing device  400 , the third radio communication device  300   a  can obtain setup information from the information processing device  400 . The third radio communication device  300   a  can obtain, from the information processing device  400 , the setup information that can be used for establishing a connection with the first radio communication device  100  that forms the first radio communication area  150 . For example, the third radio communication device  300   a  obtains, from the information processing device  400 , the setup information, such as a PIN code (unique identification information) based on the WPS method that is standardized by the Wi-Fi Alliance and that facilitates wireless LAN connection. 
     At step S 4 , upon receiving the setup information from the information processing device  400 , the third radio communication device  300   a  transmits, to the first radio communication device  100 , a setup instruction signal for instructing setup by using the setup information. 
     At step S 5 , upon receiving the setup instruction signal that is transmitted by the third radio communication device  300   a , the first radio communication device  100  sets up communication. At step S 6 , the third radio communication device  300   a  sets up communication. In this manner, in the overlap area where the first radio communication area  150  overlaps the second radio communication area  250 , communication in accordance with the first radio communication scheme can be established between the third radio communication device  300   a  and the first radio communication device  100 . 
     As described above, in the radio communication system according to the embodiment, the third radio communication device  300  can obtain the setup information from the information processing device  400 . In response to detecting that the third radio communication device  300  is located in the overlap area where the first radio communication area  150  that is formed by the first radio communication device  100  overlaps the second radio communication area  250  that is formed by the second radio communication device  200 , the third radio communication device  300  can set up communication with the first radio communication device  100  by using the setup information. 
     Operation of the Radio Communication System (Version 2) 
       FIG. 5  shows a disconnection process in the radio communication system according to the embodiment. In the example that is shown in  FIG. 5 , upon the third radio communication device  300   a  exiting from the second radio communication area  250 , the communication that is established between the third radio communication device  300   a  and the first radio communication device  100  is disconnected. In the example that is shown in  FIG. 5 , the disconnection process can be applied for disconnecting, upon the third radio communication devices  300   b - 300   e  exiting from the second radio communication area  250 , the communication that is established between the third radio communication devices  300   b - 300   e  and the first radio communication device  100 . 
     At step S 11 , the second radio communication device  200  that forms the second radio communication area  250  transmits, to the third radio communication device  300   a , the communication range information that indicates the second radio communication area  250  at predetermined timing. 
     The third radio communication device  300   a  includes a positioning device, such as a Global Positioning System (GPS) device, and the third radio communication device  300   a  detects, at step S 12 , the current location of the third radio communication device  300   a . Similarly, the second radio communication device  200  includes a positioning device, such as a GPS device, and the second radio communication device  200  detects the current location of the second radio communication device  200 . By comparing the communication range information that is transmitted by the second radio communication device  200  with the current location of the third radio communication device  300   a  that is detected by the positioning device, the third radio communication device  300   a  determines whether the current location of the third radio communication device  300   a  is within the second radio communication area  250 . Additionally, the third radio communication device  300   a  may measure Received Signal Strength Indication (RSSI) of the communication range information that is transmitted by the second radio communication device  200 , and the third radio communication device  300   a  may convert the RSSI into a distance. Then, by comparing the communication range information that is transmitted by the second radio communication device  200  with the distance that is obtained by converting the RSSI, the third radio communication device  300   a  may determine whether the current location of the third radio communication device  300   a  is within the second radio communication area  250 . The third radio communication device  300   a  transmits, to the second radio communication device  200 , a response signal to which information is attached that indicates whether the current location of the third radio communication device  300   a  is within the second radio communication area  250 . 
     Upon receiving, from the third radio communication device  300   a , a response signal that indicates that the current location of the third radio communication device  300   a  is outside the second radio communication area  250  at step S 13 , the second radio communication device  200  transmits, to the third radio communication device  300   a , a disconnection instruction signal for instructing to disconnect the communication with the second radio communication device  200 . Note that a coverage area of the radio waves of the second radio communication device  200  is set to be wider than the second radio communication area  250 . Consequently, even if the third radio communication device  300   a  is located outside the second radio communication area  250 , the third radio communication device  300   a  can receive the disconnection instruction signal that is transmitted by the second radio communication device  200 . 
     Upon receiving, at step S 14 , the disconnection instruction signal that is transmitted by the second radio communication device  200 , the third radio communication device  300   a  transmits, to the first radio communication device  100 , a disconnection instruction signal for instructing to disconnect the communication with the third radio communication device  300   a . At step S 15 , the first radio communication device  100  executes a process for disconnecting the communication with the third radio communication device  300   a . At step S 16 , the third radio communication device  300   a  executes a process for disconnecting the communication with the first radio communication device  100 . In this manner, the communication between the third radio communication device  300   a  and the first radio communication device  100  is disconnected. 
     Here, for a case where the first radio communication device  100  and the second radio communication device  200  are configured to be a single radio communication device, the disconnection instruction signal for disconnecting the communication may be transmitted from the second radio communication device  200  to the first radio communication device  100 . 
     The predetermined area that is formed by the information processing device  400  may not overlap the first radio communication area  150  that is covered by the first radio communication device  100  and the second radio communication area  250  that is covered by the second radio communication device  200 . The predetermined area that is formed by the information processing device  400  may be formed outside the first radio communication area and the second radio communication area. 
     In this manner, in the radio communication system according to the embodiment, the communication among the third radio communication devices  300   a  through  300   e  can be restricted within the first radio communication area  150  that is formed by the first radio communication device  100  and within the second radio communication area  250 . For the third radio communication device  300  that does not receive permission to establish communication with the first radio communication device  100  that forms the first radio communication area  150 , the communication between the first radio communication device  100  and the third radio communication device  300  can be established while the third radio communication device  300  is located within the second radio communication area  250 , and the communication between the first radio communication device  100  and the third radio communication device  300  can be used. 
     Embodiment 
     As a radio communication system according to this embodiment, the radio communication system that is described by referring to  FIG. 1  can be adopted. In the radio communication system, the information processing device  400  can form a predetermined area by using short range communication, such as UWB, and visible light communication. In response to detecting that the third radio communication device  300  enters the predetermined area, the information processing device  400  can execute a connection process with the third radio communication device  300 , and the information processing device  400  can transmit setup information. 
     Information Processing Device  400   
       FIG. 6  shows a hardware configuration example of the information processing device  400  according to the embodiment. The information processing device  400  may include a fourth communication circuit  402  for transmitting and receiving radio signals through an antenna in accordance with a short range communication standard; and a fourth CPU  404  for controlling operations of the whole information processing device  400 . Additionally, the information processing device  400  may include a fourth ROM  406  that stores various types of data, such as a program for the information processing device  400  that is used for driving the information processing device  400 , transmit data, and so forth; and a fourth RAM  408  that can be used as a work area of the fourth CPU  404 . The fourth communication circuit  402 , the fourth CPU  404 , the fourth ROM  406 , and the fourth RAM  408  can be connected by a fourth bus  440 . The program for the information processing device  400  may be stored in a computer readable recording medium, such as a storage medium, as a file in an installable format or in an executable format, and the program for the information processing device  400  may be distributed. 
     Here, the first radio communication device  100 , the second radio communication device  200 , and the information processing device  400  can be configured as a single radio communication device. 
     Functional Configuration of the Embodiment 
       FIG. 7  is a functional block diagram of the first radio communication device  100 , the second radio communication device  200 , the third radio communication device  300 , and the information processing device  400  according to the embodiment. 
     The first radio communication device  100  may include a first transceiver  1002 ; a first connection processing unit  1004 ; a first disconnection processing unit  1006 ; and a first communication controller  1008 . These units can be functions or units that can be achieved by operating some components of the first radio communication device  100 , which are shown in  FIG. 2 , by one or more instructions from the first CPU  104  in accordance with the program for the first radio communication device  100  that is stored in the first ROM  106 . 
     First Radio Communication Device  100   
     Next, each unit of the first radio communication device  100  is described in detail. The first transceiver  1002  of the first radio communication device  100  can be achieved by the first communication circuit  102 , which is shown in  FIG. 2 , and one or more instructions from the first CPU  104 ; and the first transceiver  1002  can communicate various types of data (information) with the third radio communication device  300  by the first radio communication scheme. 
     The first connection processing unit  1004  of the first radio communication device  100  can be achieved by one or more instructions from the first CPU  104 , which is shown in  FIG. 2 ; and the first connection processing unit  1004  can establish communication by executing a connection process with the third radio communication device  300  based on the first radio communication scheme, by using the setup information that is transmitted from the third radio communication device  300 . 
     The first disconnection processing unit  1006  of the first radio communication device  100  can be achieved by one or more instructions from the first CPU  104 , which is shown in  FIG. 2 , and the first disconnection processing unit  1006  can disconnect communication with the third radio communication device  300  in accordance with a disconnection instruction that is transmitted by the third radio communication device  300 . 
     The first communication controller  1008  of the first radio communication device  100  can be achieved by the first CPU  104 , which is shown in  FIG. 2 , and one or more instructions from the first communication controller  110 ; and the first communication controller  1008  can execute communication control in accordance with the first radio communication scheme with the third radio communication device  300 , for which the connection process is executed by the first connection processing unit  1004 . 
     Second Radio Communication Device  200   
     The second radio communication device  200  may include a second transceiver  2002 ; a second connection processing unit  2004 ; a second disconnection processing unit  2006 ; a second communication controller  2008 ; a storage/read processing unit  2010 ; and a storage unit  2012 . These units can be functions or units that can be achieved by operating some components of the second radio communication device  200 , which are shown in  FIG. 2 , by one or more instructions from the second CPU  204  in accordance with the program for the second radio communication device  200  that is stored in the second ROM  206 . 
     (Third Radio Communication Device Management Table) 
     In the storage unit  2012 , a third radio communication device management DB  2016  is provided, which includes a third radio communication device management table, such as shown in Table 1. 
     
       
         
           
               
               
               
             
               
                 TABLE 1 
               
               
                   
               
             
            
               
                 Address of the third 
                 Type of the third 
                 IP address of 
               
               
                 radio communication 
                 radio communication 
                 the third radio 
               
               
                 device in the second 
                 device 
                 communication 
               
               
                 radio communication 
                   
                 device 
               
               
                 scheme 
               
               
                 Address of the third 
                 Type of the third 
                 IP address of 
               
               
                 radio communication 
                 radio communication 
                 the third radio 
               
               
                 device 300a in the 
                 device 300a 
                 communication 
               
               
                 second radio 
                   
                 device 300a 
               
               
                 communication scheme 
               
               
                 Address of the third 
                 Type of the third 
                 IP address of 
               
               
                 radio communication 
                 radio communication 
                 the third radio 
               
               
                 device 300b in the 
                 device 300b 
                 communication 
               
               
                 second radio 
                   
                 device 300b 
               
               
                 communication scheme 
               
               
                 . . . 
                 . . . 
                 . . . 
               
               
                   
               
            
           
         
       
     
     The third radio communication device management table defines correspondence among an address of the third radio communication device  300  in the second radio communication scheme; a type of the third radio communication device  300 ; and an IP address of the third radio communication device  300 , by associating them. The address of the third radio communication device  300  in the second radio communication scheme is obtained upon detecting the third radio communication device  300  by the second radio communication scheme, and the address of the third radio communication device  300  in the second radio communication scheme can be used to determine a range of communication that is executed by the second radio communication scheme. An example of the address of the third radio communication device  300  in the second radio communication scheme can be a Bluetooth address, such as BD_ADDR, or a Bluetooth device address. The type of the third radio communication device  300  represents a type of the device, such as a smart device. The second radio communication device  200  selects a target to be controlled based on the information that is listed in the third radio communication device management table. 
     Functional Units of the Second Radio Communication Device  200   
     Next, each element of the second radio communication device  200  is described in detail. The second transceiver  2002  of the second radio communication device  200  can be achieved by the second communication circuit  202 , which is shown in  FIG. 2 , and one or more instructions from the second CPU  204 ; and the second transceiver  2002  can communicate various types of data (information) with the third radio communication device  300  by the second radio communication scheme. 
     The second connection processing unit  2004  of the second radio communication device  200  can be achieved by one or more instructions from the second CPU  204 , which is shown in  FIG. 2 ; and the second connection processing unit  2004  can create communication range information that is to be transmitted to the third radio communication device  300 , and the communication range information can be transmitted by the second transceiver  2002 . Additionally, upon receiving a response signal that is transmitted from the third radio communication device  300  that includes the communication range information, the second connection processing unit  2004  can establish communication by executing a connection process, such as a pairing process, with the third radio communication device  300 . 
     The second disconnection processing unit  2006  of the second radio communication device  200  can be achieved by one or more instructions from the second CPU  204 , which is shown in  FIG. 2 . In response to detecting that information indicating that the current location of the third radio communication device  300  is outside the second radio communication area  250  is attached to the response signal that is transmitted by the third radio communication device  300  that is executing communication with the first radio communication device  100 , the second disconnection processing unit  2006  can create disconnection instruction information, and the disconnection instruction information can be transmitted to the third radio communication device  300  from the second transceiver  2002 . 
     The second communication controller  2008  of the second radio communication device  200  can be achieved by one or more instructions from the second communication controller  210 , which is shown in  FIG. 2 ; and the second communication controller  2008  can execute communication control between the third radio communication device  300 , with which the connection process is executed by the second connection processing unit  2004 , and the second radio communication device  200 . 
     The storage/read processing unit  2010  of the second radio communication device  200  can be achieved by one or more instructions from the second CPU  204 , which is shown in  FIG. 2 , and the second ROM  206 , which is shown in  FIG. 2  as an example. The storage/read processing unit  2010  can store various types of data in the storage unit  2012 , and the storage/read processing unit  2010  can execute a process of reading out the various types of data stored in the storage unit  2012 . 
     Third Radio Communication Device  300   
     The third radio communication device  300  may include a second transceiver  3002 ; a communication range determining unit  3004 ; a second connection processing unit  3006 ; a setup information retrieval unit  3008 ; a second disconnection processing unit  3010 ; a first transceiver  3016 ; a first connection processing unit  3018 ; a first disconnection processing unit  3020 ; a storage/read processing unit  3022 ; a storage unit  3024 ; a third transceiver  3028 ; a third connection processing unit  3030 ; and a third disconnection processing unit  3032 . These units can be functions or units that can be achieved by operating some components of the third radio communication device  300 , which are shown in  FIG. 3 , by one or more instructions from the third CPU  306  in accordance with the program for the third radio communication program  300 , which is stored in the EEPROM  312 . 
     (Third Radio Communication Device Management Table) 
     In the storage unit  3024 , a third radio communication device management DB  3026  is provided, which includes a third radio communication device management table. For the third radio communication device management table, the above-described Table 1 may be adopted. 
     Functional Units of the Third Radio Communication Device  300   
     Next, each element of the third radio communication device  300  is described in detail. 
     The second transceiver  3002  of the third radio communication device  300  can be achieved by the fourth communication circuit  304 , which is shown in  FIG. 3 , and one or more instructions from the third CPU  306 ; and the second transceiver  3002  can communicate various types of data (information) with the second radio communication device  200  by the second radio communication scheme. 
     The communication range determining unit  3004  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , which is shown in  FIG. 3 . The communication range determining unit  3004  can determine whether the current location of the third radio communication device  300  is within the second radio communication area  250  by comparing the communication range information that is transmitted by the second radio communication device  200  with a distance that is obtained by converting the Received Signal Strength Indication of the communication range information. The communication range determining unit  3004  can create a response signal to which information indicating whether the current location of the third radio communication device  300  is within the second radio communication area  250 , and the response signal can be transmitted from the second transceiver  3002  to the second radio communication device  200 . 
     The second connection processing unit  3006  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , which is shown in  FIG. 3 ; and the second connection processing unit  3006  can execute a connection process with the second radio communication device  200  by the second radio communication scheme. 
     The second disconnection processing unit  3010  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , which is shown in  FIG. 3 . The second disconnection processing unit  3010  can disconnect communication with the second radio communication device  200  in the second radio communication scheme. 
     The first transceiver  3016  of the third radio communication device  300  can be achieved by the third communication circuit  302 , which is shown in  FIG. 3 , and one or more instructions from the third CPU  306 ; and the first transceiver  3016  can communicate various types of data (information) with the first radio communication device  100  by the first radio communication scheme. 
     The first connection processing unit  3018  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , which is shown in  FIG. 3 ; and the first connection processing unit  3018  can execute a connection process with the first radio communication device  100  by the first communication scheme. 
     The first disconnection processing unit  3020  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , which is shown in  FIG. 3 . The first disconnection processing unit  3020  can disconnect communication with the first radio communication device  100  by the first communication scheme. 
     The storage/read processing unit  3022  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , and the EEPROM  312 , which are shown in  FIG. 3  as an example. The storage/read processing unit  3022  can store various types of data in the storage unit  3024 ; and the storage/read processing unit  3022  can execute a process of reading out the various types of data stored in the storage unit  3024 . 
     The third transceiver  3028  of the third radio communication device  300  can be achieved by the short range communication circuit  314 , which is shown in  FIG. 3 , and one or more instructions from the third CPU  306 . The third transceiver  3028  can communicate various types of data (information) with the information processing device  400  by a short range communication method that is based on a standard, such as UWB, visible light communication, infrared communication, and so forth. 
     The third connection processing unit  3030  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , which is shown in  FIG. 3 . The third connection processing unit  3030  can execute a connection process with the information processing device  400  by the short range communication method. 
     The setup information retrieval unit  3008  of the third radio communication device  300  can be achieved by the short range communication circuit  314 , which is shown in  FIG. 3 , and one or more instructions from the fourth CPU  306 . The setup information retrieval unit  3008  can obtain, from the third transceiver  3028 , the setup information that is transmitted by the information processing device  400 , with which the connection process is executed by the third connection processing unit  3030 . 
     The third disconnection processing unit  3032  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , which is shown in  FIG. 3 . The third disconnection processing unit  3032  can disconnect communication with the information processing device  400  by the short range communication method. 
     Information Processing Device  400   
     The information processing device  400  may include a third transceiver  4002 ; a third connection processing unit  4004 ; a third disconnection processing unit  4006 ; a third communication controller  4008 ; a storage/read processing unit  4010 ; and a storage unit  4012 . These units can be functions or units that can be achieved by operating some components of the information processing device  400 , which are shown in  FIG. 6 , by one or more instructions from the fourth CPU  404  in accordance with the program for the information processing device  400  that is stored in the fourth ROM  406 . 
     (Setup Information Management Table) 
     In the storage unit  4012 , a setup information management DB  4014  is provided, which includes a setup information management table, such as shown in Table 2. 
     
       
         
           
               
               
               
               
               
               
             
               
                   
                 TABLE 2 
               
               
                   
                   
               
               
                   
                   
                 Security 
                   
                   
                 Port 
               
               
                   
                 SSID 
                 method 
                 Password 
                 IP address 
                 number 
               
               
                   
                   
               
             
            
               
                   
                 zzzzzz 
                 WPA2 
                 wwwwww 
                 192.168.10.10 
                 αα 
               
               
                   
                   
               
            
           
         
       
     
     The setup information management table defines correspondence among connection information items by associating the connection information items, e.g., the network information, such as a Service Set Identifier (SSID), a security method, and a password; and the address information, such as IP address, and a port number, which are used by the third radio communication device  300  for attempting to establish connection with the first radio communication device  100  by the first communication scheme. The SSID is identification information of the wireless LAN; and the security method is represented by a standard of an encryption method, such as WEP, WPA, WPA2, WPA2-TKIP, and AES. 
     Functional Units of the Information Processing Device  400   
     Next, each element of the information processing device  400  is described in detail. 
     The third transceiver  4002  of the information processing device  400  can be achieved by the fourth communication circuit  404 , which is shown in  FIG. 6 , and one or more instructions from the fourth CPU  404 ; and the third transceiver  4002  can communicate various types of data (information) with the third radio communication device  300  by the short range communication method. 
     The third connection processing unit  4004  of the information processing device  400  can be achieved by one or more instructions from the fourth CPU  404 , which is shown in  FIG. 6 ; and the third connection processing unit  4004  can execute a connection process with the third radio communication device  300  by the short range communication method. 
     The third disconnection processing unit  4006  of the information processing device  400  can be achieved by one or more instructions from the fourth CPU  404 , which is shown in  FIG. 6 . The third disconnection processing unit  4006  can disconnect communication with the third radio communication device  300  in the short range communication method. 
     The third communication controller  4008  of the information processing device  400  can be achieved by one or more instructions from the fourth CPU  404 , which is shown in  FIG. 6 . The third communication controller  4008  can execute communication control with the third radio communication device  300 , with which the connection process is executed by the third connection processing unit  4004 , in accordance with the short range communication method. 
     The storage/read processing unit  4010  of the information processing device  400  can be achieved by one or more instructions from the fourth CPU  404 , which is shown in  FIG. 6 , and the fourth ROM  406 , which is shown in  FIG. 6  as an example. The storage/read processing unit  4010  can store various types of data in the storage unit  4012 , and the storage/read processing unit  2010  can execute a process of reading out the various types of data stored from the storage unit  4012 . 
     Operation of the Radio Communication System 
     As the operation of the radio communication system, the operation processes that are shown in  FIGS. 4 and 5  can be applied. However, at step S 3 , the third connection processing unit  3030  of the third radio communication device  300   a  executes a connection process with the third connection processing unit  4004  of the information processing device  400  by the short range communication method. The setup information retrieval unit  3008  of the third radio communication device  300   a  requests the setup information from the information processing device  400 . The third communication controller  4008  of the information processing device  400  obtains the setup information by causing the storage/read processing unit  4010  to read out the setup information of the setup information management DB  4014  from the storage unit  4012  in accordance with the setup information request that is transmitted by the third radio communication device  300   a . The third communication controller  4008  transmits the setup information to the third radio communication device  300   a . The third transceiver  3028  of the third radio communication device  300   a  receives the setup information that is transmitted by the information processing device  400 . 
     According to the embodiment, the third radio communication device  300  can obtain, within the predetermined area that is smaller than the second radio communication area covered by the second radio communication device  200 , the setup information that is used for establishing a connection with the first radio communication device  100 . In this manner, the setup information can be prevented from being obtained by a user who is at a location that may not be visually confirmed, such as a location outside a wall, and thereby security can be enhanced. 
     Another Embodiment 
     As the radio communication system according to this embodiment, the radio communication system that is described by referring to  FIG. 1  can be applied. However, an information processing device  500  is used, instead of the information processing device  400 . In the radio communication system, the information processing device  500  forms a predetermined area by short range communication, such as infrared communication. Upon detecting that the third radio communication device  300  enters the predetermined area, the information processing device  500  executes a connection process with the third radio communication device  300 , and the information processing device  500  transmits the setup information. 
     Information Processing Device  500   
       FIG. 8  shows a hardware configuration example of the information processing device  500  according to the embodiment. The information processing device  500  may include a first output circuit  502  that outputs infrared optical signals in accordance with a short range communication standard; and a fifth CPU  504  that controls overall operation of the information processing device  500 . Additionally, the information processing device  500  may include a fifth ROM  506  that stores various types of data, such as a program for the information processing device  500  that can be used for driving the information processing device  500 , and transmit data; and a fifth RAM  508  that can be used as a work area of the fifth CPU  504 . The first output circuit  502 , the fifth CPU  504 , the fifth ROM  506 , and the fifth RAM  508  can be connected by a fifth bus  540 . The program for the information processing device  500  may be stored in a computer readable recording medium, such as a storage medium, as a file in an installable format or in an executable format, and the program for the information processing device  500  may be distributed. Here, the first radio communication device  100 , the second radio communication device  200 , and the information processing device  500  may be configured as a single radio communication device. 
     Functional Configuration of the Embodiment 
     As a functional block diagram of the first radio communication device  100 , the second radio communication device  200 , the third radio communication device  300 , and the information processing device  500 , the functional block diagram of  FIG. 7  can be applied. Here, the third transceiver  3028  of the third radio communication device  300  can be achieved by the short range communication circuit  314 , which is shown in  FIG. 3 , and one or more instructions from the third CPU  306 . The third transceiver  3028  can communicate various types of data (information) with the information processing device  500  in accordance with a short range communication method, such as infrared communication. Further, the third connection processing unit  3030  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , which is shown in  FIG. 3 . The third connection processing unit  3030  can execute a connection process with the information processing device  500  by the short range communication method. The setup information retrieval unit  3008  of the third radio communication device  300  can be achieved by the short range communication circuit  314 , which is shown in  FIG. 3 , and one or more instructions from the third CPU  306 ; and the setup information retrieval unit  3008  can obtain, from the third transceiver  3028 , the setup information that is transmitted by the information processing circuit  500 , with which the connection process is executed by the third connection processing unit  3030 . The disconnection processing unit  3032  of the third radio communication device  300  can be achieved by one or more instructions from the third CPU  306 , which is shown in  FIG. 3 . The third disconnection processing unit  3032  can disconnect communication with the information processing device  500  that is in accordance with the short range communication. 
     Information Processing Device  500   
     For the information processing device  500 , the configuration of the information processing device  500  that is shown in  FIG. 7  can be applied. 
     Operation of the Radio Communication System 
     As the operation of the radio communication system, the operation processes that are shown in  FIGS. 4 and 5  can be applied. However, at step S 3 , the third connection processing unit  3030  of the third radio communication device  300   a  executes a connection process with the third connection processing unit  4004  of the information processing device  500  by the short range communication method. The setup information retrieval unit  3008  of the third radio communication device  300   a  requests the setup information from the information processing device  500 . The third communication controller  4008  of the information processing device  500  obtains the setup information by causing the storage/read processing unit  4010  to read out the setup information of the setup information management DB  4014  from the storage unit  4012  in accordance with the setup information request that is transmitted by the third radio communication device  300   a . The third communication controller  4008  transmits the setup information to the third radio communication device  300   a . The third transceiver  3028  of the third radio communication device  300   a  receives the setup information that is transmitted by the information processing device  500 . 
     According to the embodiment, the third radio communication device  300  can obtain the setup information that is used for establishing a connection with the first radio communication device  100  within the predetermined area, which is smaller than the second radio communication area  250  that is covered by the second radio communication device  200 . In this manner, the setup information can be prevented from being obtained by a user who is at a location that may not be visually confirmed, such as a location outside a wall, and thereby security can be enhanced. 
     Another Embodiment 
     As the radio communication system according to this embodiment, the radio communication system that is described by referring to  FIG. 1  can be applied. However, an information processing device  600  is used, instead of the information processing device  400 . In the radio communication system, the information processing device  600  transmits the setup information by sound waves, such as supersonic waves, and infrasound. As a consequence, a predetermined area is formed in which the setup information can be obtained. Upon entering the predetermined area that is formed by the information processing device  600 , the third radio communication device  300  collects sound waves that are transmitted from the information processing device  600 , and the third radio communication device  300  obtains the setup information. 
     Information Processing Device  600   
       FIG. 9  shows a hardware configuration example of the information processing device  600  according to the embodiment. The information processing device  600  may include a second output circuit  602  that outputs sound waves; and a sixth CPU  604  that controls overall operation of the information processing device  600 . Additionally, the information processing device  600  may include a sixth ROM  606  that stores various types of data, such as a program for the information processing device  600  that can be used for driving the information processing device  600 , and transmit data; and a sixth RAM  608  that can be used as a work area of the sixth CPU  604 . The second output circuit  602 , the sixth CPU  604 , the sixth ROM  606 , and the sixth RAM  608  can be connected by a sixth bus  640 . The program for the information processing device  600  may be stored in a computer readable recording medium, such as a storage medium, as a file in an installable format or in an executable format, and the program for the information processing device  600  may be distributed. Here, the first radio communication device  100 , the second radio communication device  200 , and the information processing device  600  may be configured as a single radio communication device. 
     Functional Configuration of the Embodiment 
       FIG. 10  is a functional block diagram of the first radio communication device  100 , the second radio communication device  200 , the third radio communication device  300 , and the information processing device  600  according to the embodiment. As functional configurations of the first radio communication device  100  and the second radio communication device  200 , the functional configurations that are shown in  FIG. 7  can be applied. The third radio communication device  300  includes a sound collecting processing unit  3034 , instead of the third transceiver  3028 , the third connection processing unit  3030 , and the third disconnection processing unit  3032  of the third radio communication device  300  that is shown in  FIG. 7 . 
     The sound collecting processing unit  3034  of the third radio communication device  300  can be achieved by the sound collecting element  322  and one or more instructions from the third CPU  306 . The sound collecting processing unit  3034  collects sound waves that are transmitted by the information processing device  600 , and the sound collecting processing unit  3034  inputs the collected sound waves to the setup information retrieval unit  3008 . 
     The setup information retrieval unit  3008  of the third radio communication device  300  can be achieved by the sound collecting element  322 , which is shown in  FIG. 3 , and one or more instructions from the third CPU  306 ; and the setup information retrieval unit  3008  retrieves the setup information by converting the sound waves that are collected by the sound collecting processing unit  3034  into data. 
     Information Processing Device  600   
     The information processing device  600  may include a sound wave output unit  6002 ; a sound wave controller  6004 ; a storage/read processing unit  6006 ; and a storage unit  6008 . As for the storage/read processing unit  6006  and the storage unit  6008 , the storage/read processing unit  4010  and the storage unit  4012  that are shown in  FIG. 7  can be applied. The sound wave output unit  6002  of the information processing device  600  can be achieved by the second output circuit  602 , which is shown in  FIG. 9 , and one or more instructions from the sixth CPU  604 ; and the sound wave output unit  6002  outputs the setup information by using sound waves. 
     The sound wave controller  6004  of the information processing device  600  can be achieved by one or more instructions from the sixth CPU  604 , which is shown in  FIG. 9 . The sound wave controller  6004  executes output control of sound waves that are to be output from the sound wave output unit  6002 . 
     The storage/read processing unit  6006  of the information processing device  600  can be achieved by one or more instructions from the sixth CPU  604 , which is shown in  FIG. 9 , and the sixth ROM  606 , which is shown in  FIG. 9  as an example. The storage/read processing unit  6006  can store various types of data in the storage unit  6008 , and the storage/read processing unit  6006  can execute a process of reading out the various types of data stored from the storage unit  6008 . In the storage unit  6008 , a setup information management DB  6010  is provided, which includes a setup information management table, such as shown in Table 2. 
     Operation of the Radio Communication System 
     As the operation of the radio communication system, the operation processes that are shown in  FIGS. 4 and 5  can be applied. However, at step S 3 , the sound wave output unit  6002  of the information processing device  600  transmits the setup information by using sound waves, in accordance with the control of the sound wave controller  6004 . The sound collecting processing unit  3034  of the third radio communication device  300  collects sound waves that are output from the sound wave output unit  6002  of the information processing device  600 . The setup information retrieval unit  3008  obtains the setup information by converting the sound waves that are collected by the sound collecting processing unit  3034  into data. 
     According to the embodiment, the third radio communication device  300  can obtain, based on the sound waves that are transmitted by the information processing device  600 , the setup information that is used for establishing a connection with the first radio communication device  100  within the predetermined area, which is smaller than the second radio communication area  250  that is covered by the second radio communication device  200 . In this manner, the setup information can be prevented from being obtained by a user who is at a location that may not be visually confirmed, such as a location outside a wall, and thereby security can be enhanced. 
     Another Embodiment 
     As the radio communication system according to this embodiment, the radio communication system that is described by referring to  FIG. 1  can be applied. However, an information processing device  700  is used, instead of the information processing device  400 . In the radio communication system, the information processing device  700  causes the third radio communication device  300  to obtain the setup information by using a graphic image, such as QR code (registered trademark), and a bar code. As a consequence, a predetermined area is formed in which the setup information can be obtained. Upon entering the predetermined area, the third radio communication device  300  captures a graphic image that is displayed by the information processing device  700 , and thereby the third radio communication device  300  obtains the setup information. 
     Information Processing Device  700   
       FIG. 11  shows a hardware configuration example of the information processing device  700  according to the embodiment. The information processing device  700  may include a display circuit  702  that displays a graphic image; and a seventh CPU  704  that controls overall operation of the information processing device  700 . Additionally, the information processing device  700  may include a seventh ROM  706  that stores various types of data, such as a program for the information processing device  700  that can be used for driving the information processing device  700 , and transmit data; and a seventh RAM  708  that can be used as a work area of the seventh CPU  704 . The display circuit  702 , the seventh CPU  704 , the seventh ROM  706 , and the seventh RAM  708  can be connected by a seventh bus  740 . The program for the information processing device  700  may be stored in a computer readable recording medium, such as a storage medium, as a file in an installable format or in an executable format, and the program for the information processing device  700  may be distributed. Here, the first radio communication device  100 , the second radio communication device  200 , and the information processing device  700  may be configured as a single radio communication device. 
     Functional Configuration of the Embodiment 
       FIG. 12  is a functional block diagram of the first radio communication device  100 , the second radio communication device  200 , the third radio communication device  300 , and the information processing device  700  according to the embodiment. As functional configurations of the first radio communication device  100  and the second radio communication device  200 , the functional configurations that are shown in  FIG. 7  can be applied. The third radio communication device  300  includes an image information capture unit  3036 , instead of the third transceiver  3028 , the third connection processing unit  3030 , and the third disconnection processing unit  3032  of the third radio communication device  300  that is shown in  FIG. 7 . 
     The image information capture unit  3036  of the third radio communication device  300  can be achieved by the automatic recognition circuit  330 , which is shown in  FIG. 3 , and one or more instructions from the third CPU  306 . The image information capture unit  3036  captures a graphic image that is displayed by the information processing device  700 , and the image information capture unit  3036  inputs the graphic image to the setup information retrieval unit  3008 . 
     The setup information retrieval unit  3008  of the third radio communication device  300  can be achieved by the automatic recognition circuit  330 , which is shown in  FIG. 3 , and one or more instructions from the third CPU  306 ; and the setup information retrieval unit  3008  obtains the setup information based on the graphic image that is captured by the image information capture unit  3036 . 
     Information Processing Device  700   
     The information processing device  700  may include a display controller  7002 ; a storage/read processing unit  7004 ; and a storage unit  7006 . As for the configurations of the storage/read processing unit  7004  and the storage unit  7006 , the configurations that are shown in  FIG. 7  can be applied. The display controller  7002  of the information processing device  700  can be achieved by the display circuit  702 , which is shown in  FIG. 11 , and one or more instructions from the seventh CPU  704 ; and the display controller  7002  outputs the setup information by using a graphic image. 
     The storage/read processing unit  7004  of the information processing device  700  can be achieved by one or more instructions from the seventh CPU  704 , which is shown in  FIG. 11 , and the seventh ROM  706 , which is shown in  FIG. 11 . The storage/read processing unit  7004  can store various types of data in the storage unit  7006 , and the storage/read processing unit  7004  can execute a process of reading out the various types of data stored from the storage unit  7006 . In the storage unit  7006 , a setup information management DB  7008  is provided, which includes a setup information management table, such as shown in Table 2. 
     Operation of the Radio Communication System 
     As the operation of the radio communication system, the operation processes that are shown in  FIGS. 4 and 5  can be applied. However, at step S 3 , the display controller  7002  of the information processing device  700  displays the setup information by using a graphic image. The image information capture unit  3036  of the third radio communication device  300  captures a graphic image that is displayed by the display controller  7002  of the information processing device  700 ; and the setup information retrieval unit  3008  obtains the setup information based on the graphic image that is captured by the image information capture unit  3036 . 
     According to the embodiment, the third radio communication device  300  can obtain, based on the graphic image that is displayed by the information processing device  700 , the setup information that is used for establishing a connection with the first radio communication device  100  within the predetermined area, which is smaller than the second radio communication area  250  that is covered by the second radio communication device  200 . In this manner, the setup information can be prevented from being obtained by a user who is at a location that may not be visually confirmed, such as a location outside a wall, and thereby security can be enhanced. 
     Further Embodiment 
     As the radio communication system according to this embodiment, the radio communication system that is described by referring to  FIG. 1  can be applied. However, an information processing device  800  is used, instead of the information processing device  400 . In the radio communication system, the third radio communication device  300  obtains the setup information from the information processing device  800  by using proximity communication, such as proximity communication by using a radio frequency identifier (RFID). For example, upon placing the third radio communication device  300 , by a user of the third radio communication device  300 , in the area where the proximity communication with the information processing device  800  can be executed, the proximity communication between the third radio communication device  300  and the information processing device  800  is executed. As a consequence, the third radio communication device  300  obtains the setup information that is transmitted by the information processing device  800 . 
     Information Processing Device  800   
       FIG. 13  shows a hardware configuration example of the information processing device  800  according to the embodiment. The information processing device  800  may include a proximity communication circuit  802  that transmits and receives radio signals in accordance with a proximity communication standard; and an eighth CPU  804  that controls overall operation of the information processing device  800 . Additionally, the information processing device  800  may include an eighth ROM  806  that stores various types of data, such as a program for the information processing device  800  that can be used for driving the information processing device  800 , and transmit data; and an eighth RAM  808  that can be used as a work area of the eighth CPU  804 . The proximity communication circuit  802 , the eighth CPU  804 , the eighth ROM  806 , and the eighth RAM  808  can be connected by an eighth bus  840 . The program for the information processing device  800  may be stored in a computer readable recording medium, such as a storage medium, as a file in an installable format or in an executable format, and the program for the information processing device  500  may be distributed. Here, the first radio communication device  100 , the second radio communication device  200 , and the information processing device  800  may be configured as a single radio communication device. 
     Functional Configuration of the Embodiment 
       FIG. 14  is a functional block diagram of the first radio communication device  100 , the second radio communication device  200 , the third radio communication device  300 , and the information processing device  800  according to the embodiment. As functional configurations of the first radio communication device  100  and the second radio communication device  200 , the functional configurations that are shown in  FIG. 7  can be applied. However, the third radio communication device  300  includes a reading processing unit  3038 , instead of the third transceiver  3028 , the third connection processing unit  3030 , and the third disconnection processing unit  3032  of the third radio communication device  300  that is shown in  FIG. 7 . 
     The reading processing unit  3038  of the third radio communication device  300  can be achieved by the reader  332 , which is shown in  FIG. 3 , and one or more instructions from the third CPU  306 . The reading processing unit  3038  reads various types of data (information) that are transmitted from the information processing device  800  by proximity communication, and the reading processing unit  3038  inputs the various types of data to the setup information retrieval unit  3008 . 
     The setup information retrieval unit  3008  of the third radio communication device  300  can be achieved by the reader  332 , which is shown in  FIG. 3 , and one ore more instructions from the third CPU  306 ; and the setup information retrieval unit  3008  obtains the setup information based on data that is read by the reading processing unit  3038 . 
     Information Processing Device  800   
     The information processing device  800  may include a fourth transceiver  8002 ; a storage/read processing unit  8004 ; and a storage unit  8006 . As for a storage/read processing unit  8004  and a storage unit  8006 , the configurations that are shown in  FIG. 7  can be applied. The fourth transceiver  8002  of the information processing device  800  can be achieved by the proximity communication circuit  802 , which is shown in  FIG. 13 , and one or more instructions from the eighth CPU  804 ; and, upon detecting that the fourth transceiver  8002  is adjacent to the reader  332  of the third radio communication device  300 , the fourth transceiver  8002  outputs the setup information. 
     The storage/read processing unit  8004  of the information processing device  800  can be achieved by one or more instructions from the eighth CPU  804 , which is shown in  FIG. 13 , and the eighth ROM  806 , which is shown in  FIG. 13  as an example. The storage/read processing unit  8004  can store various types of data in the storage unit  8006 , and the storage/read processing unit  8004  can execute a process of reading out the various types of data stored from the storage unit  8006 . In the storage unit  8006 , a setup information management DB  8008  is provided, which includes a setup information management table, such as shown in Table 2. 
     Operation of the Radio Communication System 
     As the operation of the radio communication system, the operation processes that are shown in  FIGS. 4 and 5  can be applied. However, at step S 3 , the fourth transceiver  8002  of the information processing device  800  transmits the setup information by the proximity communication. The reading processing unit  3038  of the third radio communication device  300  reads the setup information that is transmitted by the fourth transceiver  8002  of the information processing device  800 ; and the setup information retrieval unit  3008  obtains the setup information that is read by the reading processing unit  3038 . 
     According to the embodiment, the third radio communication device  300  can obtain, from the information processing device  800 , the setup information that is used for establishing a connection with the first radio communication device  100  within the predetermined area, which is smaller than the second radio communication area  250  that is covered by the second radio communication device  200 . In this manner, the setup information can be prevented from being obtained by a user who is at a location that may not be visually confirmed, such as a location outside a wall, and thereby security can be enhanced. 
     The communication device and the communication method are described above by the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications and improvements can be made within the scope of the present invention. Specific examples of numerical values are used in order to facilitate understanding of the invention. However, these numerical values are simply illustrative, and any other appropriate values may be used, except as indicated otherwise. The separations of the items in the above explanation are not essential to the present invention. Depending on necessity, subject matter described in two or more items may be combined and used, and subject matter described in an item may be applied to subject matter described in another item (provided that they do not contradict). A boundary of a functional unit or a processor in the functional block diagrams may not necessarily correspond to a boundary of a physical component. An operation by a plurality of functional units may be physically executed by a single component, or an operation of a single functional unit may be physically executed by a plurality of components. For the convenience of explanation, the communication terminal and the information processing device are explained by using the functional block diagrams. However, these devices may be implemented in hardware, software, or combinations thereof. The software that operates in accordance with the present invention may be prepared in any appropriate storage medium, such as a random access memory (RAM), a flash memory, a read-only memory (ROM), an EPROM, an EEPROM, a register, a hard disk drive (HDD), a removable disk, a CD-ROM, a database, a server, and the like. 
     The present application is based on and claims the benefit of priority of Japanese Patent Application No. 2015-034421, filed on Feb. 24, 2015, the entire contents of which are hereby incorporated by reference.