JP2016192728A - Access point device, communication control device, communication system, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an access point device that allows the setting change of radio communication conditions to be performed relatively simply.SOLUTION: An access point device comprising communication means and an interface connected to a storage medium detects the connection of the storage medium to the interface, and determines whether or not setting rewriting permission information is received from a prescribed communication destination when the storage medium gets connected to the interface. If the access point device determines that the setting rewriting permission information is received, it changes setting.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an access point device, a communication control device, a communication system including the access point device, and a program that configure a wireless communication network.

  In an emergency, network communication means such as the Internet may be available even when the telephone line is congested and becomes virtually unusable. Focusing on these circumstances, in recent years, network use in emergencies has been considered.

  Patent Document 1 discloses that in an emergency, an in-vehicle device switches a wireless LAN (Local Area Network) mode, releases security, and changes the SSID.

JP 2014-007649 A

  However, in a conventional wireless LAN access point device, for example, a single wireless communication network is configured in normal times, communication with appropriate security is performed, and in an emergency, a simple operation is performed using a technology such as a virtual LAN. It is not always easy to change the setting of wireless communication conditions with a high degree of freedom, such as performing emergency communication while maintaining the same communication as the time.

  The present invention has been made in view of the above circumstances. For example, it is an object of the present invention to provide an access point device capable of changing the setting of wireless communication conditions relatively easily in an emergency. .

  An access point device that solves the problems of the conventional example is an access point device including a communication unit and an interface to which a storage medium is connected, the detection unit detecting the connection of the storage medium to the interface, When the storage medium is connected to the interface, it is determined that the setting rewrite permission information is received from a predetermined communication destination, and the determination means determines that the setting rewrite permission information is received. And a setting changing means for changing the settings relating to communication.

  As a result, for example, in an emergency, the wireless communication condition setting can be changed relatively easily by a simple operation of connecting a storage medium.

  The determination means may determine that the setting rewrite permission information has been received when the information received from the predetermined communication destination is information that matches the information stored in the connected storage medium. Good. The setting rewrite permission information may include setting information related to communication.

  Furthermore, the communication control device according to one aspect of the present invention includes an interface connected to the access point device and connected to the storage medium, and when the storage medium storing the setting rewrite permission information is connected to the interface, The setting rewrite permission information is read and transmitted to the access point device.

  One aspect of the present invention is a communication system including an access point device and a communication control device connected to the access point device, wherein the communication control device outputs setting rewrite permission information, The access point device detects whether or not a storage medium is connected to the interface, and whether or not setting rewrite permission information is received from the communication control device when the storage medium is connected to the interface. A determination unit for determining, and a setting change unit for changing a setting related to communication when the determination unit determines that the setting rewrite permission information is received.

  Furthermore, another aspect of the present invention is a program, comprising: an access point device including an interface to which a storage medium is connected; a detection unit that detects connection of the storage medium to the interface; and a storage medium in the interface A determination unit that determines whether or not setting rewrite permission information is received from a predetermined communication destination when connected, and communication when the determination unit determines that the setting rewriting permission information is received. It is supposed to function as a setting changing means for changing the setting relating to the above.

  According to the present invention, it is possible to change the setting of wireless communication conditions relatively easily.

It is a block diagram showing the example of a structure of the radio | wireless communications system which concerns on embodiment of this invention. It is a block diagram showing the structural example of the switch apparatus which concerns on embodiment of this invention. It is a functional block diagram concerning an example of a control part of an access point device concerning an embodiment of the invention. It is a flowchart showing the operation example of the radio | wireless communications system which concerns on embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings. As illustrated in FIG. 1, a wireless communication system 1 that is an example of a communication system according to the present embodiment includes an access point device 10 and a switch device 20. In the present embodiment, these access points are accessed. The point device 10 is connected to a switch device 20 as a communication control device.

  Here, as illustrated in FIG. 1, the access point device 10 includes a control unit 11, a storage unit 12, a nonvolatile storage unit 13, a wired communication unit 14, a wireless communication unit 15, and an interface unit 16. A storage medium 30 can be connected to the interface unit 16.

  The control unit 11 is a program control device such as a CPU, and operates according to a program stored in the storage unit 12. The control unit 11 according to the present embodiment executes a program (access point program) for performing processing as an access point. In this process, the control unit 11 performs wireless communication with a terminal connected via the wireless communication unit 15 under wireless communication conditions set in advance. Here, the wireless communication conditions include information such as at least one SSID (Service Set Identifier) for identifying the access point device 1 and encryption for each SSID (each logical access point identified by each SSID). And information on security such as an encryption key. This security-related information may be information indicating substantially no security such as “no encryption”.

  In addition, the control unit 11 executes a program for performing setting change processing. Thus, the control unit 11 receives the setting rewrite permission information from a predetermined communication destination when the storage unit 30 is connected to the interface unit 16 and the detection unit that detects the connection of the storage medium 30 to the interface unit 16. And a means for changing the setting when it is determined that the setting rewriting permission information is received by the determining means. The processing of the control unit 11 will be described in detail later. In the present embodiment, it is assumed that the communication destination that provides the setting rewrite permission information is the switch device 20.

  The storage unit 12 is a RAM (Random Access Memory) that stores a program (firmware) executed by the control unit 11, setting information, and the like. In the present embodiment, the storage unit 12 also operates as a work memory of the control unit 11.

  The non-volatile storage unit 13 includes a non-volatile memory such as a flash memory. The nonvolatile storage unit 13 stores a program (firmware) that is copied and executed in the storage unit 12 during execution, setting information, and the like. This program is provided by being stored in a computer-readable non-transitory storage medium such as a DVD-ROM, or provided via a network and stored in the nonvolatile storage unit 13. It may be. Here, the setting information defines wireless communication conditions and the like.

  The wired communication unit 14 is a wired network interface or the like, and is connected to a network device such as the switch device 20 connected to the wired LAN in the example of the present embodiment. Further, the wired communication unit 14 is communicably connected to a device on a WAN (Wide Area Network) such as the Internet via a router or the like connected to a wired LAN. The wired communication unit 14 transmits / receives information via a wired LAN or WAN in accordance with an instruction input from the control unit 11.

  The wireless communication unit 15 is a wireless LAN interface or the like, and transmits / receives data wirelessly to / from a terminal (such as a PC) not shown in accordance with an instruction input from the control unit 11 under set wireless communication conditions. The interface unit 16 is, for example, a USB (Universal Serial Bus) interface, and accepts connection of a computer-readable (and non-transitory) storage medium 30 such as a USB memory or an SD card. The interface unit 16 reads information stored in the connected storage medium 30 in accordance with an instruction input from the control unit 11. Further, the interface unit 16 performs a process of writing information to the connected storage medium 30 in accordance with an instruction input from the control unit 11.

  The switch device 20 implements the communication control device of the present invention. In an example of the present embodiment, the switch device 20 is connected to be communicable with the access point device 10 via a wired LAN. In the present embodiment, the switch device 20 is configured to include a plurality of wired LAN ports 21a, b,..., A switch control unit 22, a storage unit 23, and an interface unit 24, as illustrated in FIG. The

  Here, the plurality of wired LAN ports 21 are connected to terminal devices (PCs), routers R, and the like that are connected via the wired LAN. The switch control unit 22 is a program control device such as a CPU, and operates according to a program stored in the storage unit 23. In the present embodiment, the switch control unit 22 performs processing as a general switch, and other wired LANs that select data received via any wired LAN port 21 according to the destination information. Send out via port 21. Since the contents of this processing are widely known, detailed description thereof is omitted here.

  Further, in this embodiment, when the switch control unit 22 detects that a storage medium is connected to the interface unit 24, the switch control unit 22 sends packet information including information stored in the storage medium to a predetermined transmission. Process to send to the destination. Specifically, here, it is assumed that the access point device 10 is set as a predetermined transmission destination, and the setting is performed when the access point device 10 or the switch device 20 is installed by designating the MAC address or the like.

  The storage unit 23 stores a program executed by the switch control unit 22. The storage unit 23 also operates as a work memory for the switch control unit 22.

  The interface unit 24 is, for example, a USB (Universal Serial Bus) interface, and accepts a connection of a computer-readable (and non-transitory) storage medium 30 ′ such as a USB memory or an SD card. The interface unit 24 reads information stored in the connected storage medium 30 ′ in accordance with an instruction input from the switch control unit 22. In an example of the present embodiment, setting rewrite permission information provided to the access point device 10 is stored in the storage medium 30 ′. This setting rewrite permission information is information according to a rule that is set in advance as information indicating that setting rewriting is permitted.

  Here, the operation of the control unit 11 of the access point device 10 according to the present embodiment will be described. In an example of the present embodiment, the control unit 11 is functionally configured to include an access point function unit 40 and a setting information rewriting unit 50 as illustrated in FIG. Includes a detection unit 51, a determination unit 52, and a setting change processing unit 53.

  Here, the access point function unit 40 operates in accordance with the setting information stored in the storage unit 12 and performs wireless communication using the SSID and security settings that are wireless communication conditions defined by the setting information. Since the operation of the access point function unit 40 is the same as that of a general access point, a detailed description thereof is omitted here.

  The detection unit 51 of the setting information rewriting unit 50 checks whether the storage medium 30 is connected to the interface unit 16 at every predetermined timing. When the detection unit 51 determines that the storage medium 30 is connected to the interface unit 16, the detection unit 51 outputs information indicating that fact to the determination unit 52.

  When the determination unit 51 determines that the storage medium 30 is connected to the interface unit 16 by the detection unit 51, the determination unit 52 determines whether setting rewrite permission information is received from the switch device 20 that is a communication destination. Specifically, in the present embodiment, the setting rewrite permission information is information according to a predetermined rule, and an example thereof may be a predetermined character string. The setting rewrite permission information may match information stored as setting rewriting permission information in the storage medium 30 connected to the interface unit 16. In this case, when the packet information received from the switch device 20 that is the communication destination includes the same information as the information stored in the storage medium 30 connected to the interface unit 16, the determination unit 52 20, it is determined that the setting rewrite permission information is received from 20.

  When the setting change processing unit 53 determines that the setting rewrite permission information is received by the determination unit 52, the setting change processing unit 53 changes the setting information recorded in the nonvolatile storage unit 13 by a predetermined method (change processing).

  Here, in addition to programs and setting information (hereinafter referred to as execution information) that are copied to the storage unit 12 and used at the time of execution, they should be written to the nonvolatile storage unit 13 of the access point device 10 by this change processing. Setting information, a factory default program, setting information, and the like (hereinafter referred to as reference information) may be stored. Hereinafter, for the sake of distinction, the setting information used until the changing process is referred to as first setting information, and the setting information to be written by the changing process is referred to as second setting information.

  In this case, when the setting change processing unit 53 determines that the setting rewrite permission information is received by the determination unit 52, the setting change processing unit 53 reads the second setting information from the reference information from the nonvolatile storage unit 13 and executes it. Overwrite the information setting information. At this time, the setting change processing unit 53 may restart (execute again from the beginning) the program (access point program) in order to cause the program to read the rewritten setting information.

  In this example of the present embodiment, if the second setting information includes information for setting a logical access point for connecting to the Internet without security for emergency, the setting change processing unit 53 By overwriting the second setting information on the execution information and executing the access point program using the setting information, the access point device 10 functions as an emergency logical access point.

  The second setting information to be written by the setting change processing unit 53 may not be stored in the nonvolatile storage unit 13, and may be stored in the storage medium 30 stored in the interface unit 16, for example. In this case, when the setting change processing unit 53 determines that the setting rewrite permission information has been received by the determination unit 52, the setting change processing unit 53 reads the second setting information from the storage medium 30 and executes it in the nonvolatile storage unit 13. Overwrite the information setting information.

  As yet another example, the second setting information may be transmitted from the switch device 20 included in the setting rewrite permission information. In this case, when the setting change processing unit 53 determines that the setting rewrite permission information is received by the determining unit 52, the setting change processing unit 53 reads the second setting information from the received setting rewriting permission information, and stores the second setting information. 13 is overwritten on the setting information of the execution information in 13.

  Also in these cases, the setting change processing unit 53 may restart the program (access point program) (execute again from the beginning) in order to make the program read the setting information after rewriting.

  When the setting change processing unit 53 rewrites (overwrites) the setting information in the processing here, the setting change processing unit 53 deletes the setting information (first setting information included in the execution information before the processing) deleted by overwriting. The information may be copied into the reference information in the nonvolatile storage unit 13 and recorded as setting save information.

  The wireless communication system 1 according to an example of the present embodiment has the above configuration and operates as follows. The wireless communication system 1 according to the present embodiment is installed in a school or the like, for example. Specifically, the access point device 10 is arranged in a gymnasium or the like, and the access point device 10 is installed in a staff room or the like via a wired LAN. Connected to the switch device 20. A router R is connected to the communication port 21 of the switch device 20, and communication devices on the LAN can communicate with the WAN side such as the Internet via the router R. Furthermore, in the following example, it is assumed that a predetermined network address (for example, a private address) is assigned to a device connected to the access point device 10 via a wired LAN or a wireless LAN. In addition, the storage media 30, 30 'are stored on the school side.

  During normal times, the access point device 10 of the wireless communication system 1 according to the present embodiment is set with an SSID arbitrarily defined by the school or the like (hereinafter referred to as “normal SSID”). It is assumed that security information such as an encryption method managed privately at the school side and an encryption key is set. Therefore, an outsider who normally visits the gymnasium cannot perform wireless communication with the access point device 10.

  On the other hand, a person who can know SSID and security information, such as a faculty member, can perform wireless communication with the access point device 10 using a tablet terminal or the like in a gymnasium. At this time, the access point device 10 functions as a general wireless LAN access point, and in response to an instruction from the terminal performing the wireless communication, another terminal connected via the wireless LAN or the wired LAN, The data received from the terminal is sent to an instructed destination such as a web server on the Internet connected via the router R. In addition, data received from the other terminal or a web server on the Internet is transmitted to the terminal. Since this operation is a general operation of the access point device 10, its detailed description is omitted.

  After that, when it is judged appropriate to use the wireless LAN network for public use, such as when a gymnasium becomes a temporary evacuation site due to the occurrence of a natural disaster, etc., the storage medium 30 stored by the faculty and staff is used as an access point. Connect to the interface unit 16 of the apparatus 10. Further, the storage medium 30 ′ is connected to the switch device 20.

  Then, as illustrated in FIG. 4, the switch device 20 sends packet information including setting rewrite permission information to the access point device 10 (S1). The access point device 10 receives this packet information. In this example, the setting rewrite permission information includes, as the second setting information, a predetermined SSID (for example, “00000JAPAN” defined by the wireless LAN business promotion liaison for emergency use, etc. It is assumed that the security setting of the logical access point identified by the SSID is set to “no encryption”.

  When the access point device 10 detects that the storage medium 30 is connected (S2), the access point device 10 determines whether setting rewrite permission information is received from the switch device 20 (S3). Since the setting rewrite permission information is received here (because it is Yes), the access point device 10 reads the second setting information from the received setting rewriting permission information, and stores it in the nonvolatile storage unit 13. Is overwritten on the setting information (first setting information) of the execution information (S4), and the access point device 10 is restarted (S5).

  Here, since the access point device 10 is restarted by copying the setting information indicating the setting for performing communication without security (not encrypted) using the above-mentioned default SSID, the access point device 10 is restarted. 10, thereafter, wireless communication is performed with a terminal that seeks connection using the predetermined SSID. Therefore, in response to an instruction from the terminal performing the wireless communication, other terminals connected via the wireless LAN or wired LAN, web servers on the Internet connected via the router R, etc. are instructed. The data received from the terminal is sent to the destination. In addition, data received from the other terminal or a web server on the Internet is transmitted to the terminal.

  Note that the process S2 is repeatedly executed while it is not detected that the storage medium 30 is connected in the process S2. If the setting rewrite permission information is not received from the switch device 20 in the process S3 (in the case of No), the process S3 is repeatedly executed. In the example of FIG. 4, since the switch device 20 has sent the setting rewrite permission information first, the operation when the setting rewriting permission information is not received in step S3 is indicated by a broken line. However, the present embodiment is not limited to the example of FIG. 4, and the setting rewrite permission information may be sent after the process S2. In this case, the access point device 10 repeatedly executes the process S3.

  Note that the repetition frequency (the number of repetitions per unit time) when the process S2 is repeatedly executed may be different from the repetition frequency when the process S3 is repeatedly executed. Specifically, the repetition frequency of the process S3 may be higher than the repetition frequency of the process S2 (repeated more frequently).

  In this example, when a temporary SSID such as an emergency SSID is used, the communication is set so that communication using the normal SSID cannot be performed. As described above, the access point device 10 according to the present embodiment may perform control so that wireless communication using another SSID cannot be performed when the setting rewrite permission information is received and the setting information is rewritten.

  Further, according to this example, even when the storage medium 30 is connected to the access point device 10, the setting information is not rewritten until the storage medium 30 ′ is connected to the switch device 20.

[Example using multiple SSIDs]
Further, in the process S4, when the access point device 10 receives the setting rewrite permission information and rewrites the setting information, the access point apparatus 10 does not overwrite the setting information in the execution information but appends it to the setting information in the execution information. The access point device 10 may be restarted. In this example, after the restart, the access point device 10 performs processing as a first logical access point that performs communication based on wireless communication conditions based on the first setting information and communication based on wireless communication conditions based on the second setting information. The process as the second logical access point to be performed is executed.

  As a result, in addition to the normal SSID already set, a temporary SSID setting is added, and wireless communication using a plurality of SSIDs is performed. In this case, the contents of the security settings for the normal SSID and the temporary SSID may be different. Since such communication processing using a plurality of SSIDs (so-called multi-SSID processing) is widely known, detailed description thereof is omitted here.

[Example of separating networks]
Even in an emergency, access to other terminals connected via a wireless LAN or a wired LAN may not be preferable. Therefore, in the access point device 10 according to the present embodiment, for each SSID, whether to allow communication with devices such as other terminals connected via the wireless LAN or the wired LAN (WAN via the router R). It may be possible to set whether or not only communication to the side is permitted.

  In the above example, the normal SSID is set to allow communication with devices such as other terminals connected via a wireless LAN or a wired LAN, and the temporary SSID is set via a wireless LAN or a wired LAN. In other words, the setting is such that communication with other devices such as other terminals connected is not permitted (only communication to the WAN side is permitted).

  In this case, the access point device 10 uses the SSID (temporary SSID in the above example) that is set not to allow communication with devices such as other terminals connected via the wireless LAN or the wired LAN. For the packet information received by, when the destination is referred to and the network address of the destination is a network address (within the same network) set in a terminal or the like connected via a wireless LAN or a wired LAN ( The packet information is discarded when the address is not the WAN side.

[Example using VLAN]
Further, in the present embodiment, when communication using a plurality of SSIDs is performed, a VLAN that is set in advance for each logical access point that is identified by a different SSID using a VLAN (Virtual LAN) is used. It is good also as performing communication via. Specifically, each of these VLANs is identified by a different tag, and the access point apparatus 10 attaches a tag indicating which VLAN is used for communication to the packet information and sends it to the switch apparatus 20.

  The switch device 20 performs communication control based on communication conditions predetermined for each VLAN. Specifically, the access point device 10 is connected to the wired LAN port 21a of the switch device 20, and other devices connected via the wired LAN are connected to the wired LAN ports 21b, c,. It is assumed that a router R is connected to the port 21n, and communication with a web server or the like on the Internet is possible via the wired LAN port 21n. At this time, for example, for the VLAN identified by the tag “A”, only communication between the wired LAN ports 21a and 21n is permitted, and for the VLAN identified by the tag “B”, between any wired LAN ports 21 Communication is permitted in advance (including sending packet information received from the wired LAN port 21a through the same wired LAN port 21a).

  The access point device 10 allows the packet information received by wireless communication using the normal SSID to permit communication with other devices such as a terminal connected via a wireless LAN or a wired LAN. A tag “B” is added to the information and sent to the switch device 20.

  Also, for packet information received by wireless communication using a temporary SSID, the access point device 10 does not permit communication with devices such as other terminals connected via a wireless LAN or a wired LAN (to the WAN side). Tag "A" is added to the packet information and output to the switch device 20 so as to permit only the communication of

  That is, in the access point device 10, wireless communication using an SSID (temporary SSID in the above example) set not to allow communication with devices such as other terminals connected via a wireless LAN or a wired LAN. The packet information received by is sent with the tag “A” added. The switch device 20 refers to the destination of the packet information received from the access point device 10, and the network address of the destination is set in a terminal or the like connected via a wireless LAN or a wired LAN (in the same network) ) If it is a network address (if it is not a WAN address), the packet information is discarded because there is no destination on the wired LAN port 21n side. Further, when the destination of the packet information to which the tag “A” is added is the WAN address, the switch device 20 outputs the packet information to the router R via the wired LAN port 21n.

  Thus, for each SSID, whether to allow communication with devices such as other terminals connected via the wireless LAN or wired LAN (whether only communication to the WAN side via the router R is permitted) Can be set.

[Example of booting from a storage medium]
In addition, the access point device 10 according to the present embodiment may be configured to be able to specify a storage location of setting information that is read at startup (including restart) and used as execution information. In this example, the nonvolatile storage unit 13 stores information indicating a storage location of setting information to be read at the time of activation. In one example of the present embodiment, the access point device 10 reads the setting information from either the nonvolatile storage unit 13 or the storage medium 30 connected to the interface unit 16 at the time of activation. In this case, the information indicating the storage location of the setting information is either information for specifying the nonvolatile storage unit 13 or information for specifying the storage medium 30.

  When the access point device 10 is activated (reactivated), the access point device 10 refers to information representing the storage location, reads the setting information stored in the storage location represented by the referenced information, and sets it as execution information. According to this example, when the access point device 10 determines that the setting rewrite permission information is received from the switch device 20 instead of the processing S4 illustrated in FIG. The information to be written is overwritten on the information on the storage location in the nonvolatile storage unit 13, and the access point device 10 is restarted.

  Specifically, when it is determined that the storage medium 30 is connected to the interface unit 16 and the setting rewrite information is received from the switch device 20, the access point device 10 uses the storage medium as information indicating the storage location of the setting information. The information for identifying 30 is overwritten on the information on the storage location of the non-volatile storage unit 13 and rebooted.

  As a result, the access point device 10 sets wireless communication conditions such as SSID and security settings to be used in accordance with the setting information stored in the storage medium 30.

  Further, in the example of the present embodiment, instead of the process S4 shown in FIG. 4, when it is determined that the setting rewrite permission information is received from the switch device 20, the storage medium 30 that is the setting information storage location is stored. The information to be written is overwritten on the information on the storage location in the nonvolatile storage unit 13, and the second setting information is stored in the storage medium 30 to restart the access point device 10.

  In this case, even if the setting information is not stored in the storage medium 30, the second setting is performed from the information stored in advance in the nonvolatile storage unit 13 or the information received from the switch device 20, as in the example described above. By acquiring the information, storing the acquired second setting information in the storage medium 30, and restarting, the processing based on the second setting information can be executed.

  Further, in another example of the present embodiment, it is checked whether or not the storage medium 30 is connected when the access point device 10 is started (or restarted) without using information indicating the storage location of the setting information. When connected, the setting information stored in the storage medium 30 may be used as information for execution. In this example, when the storage medium 30 is not connected at the start (restart), the setting information stored in the nonvolatile storage unit 13 is used as the execution information.

[Process when the storage medium is removed]
In addition, after determining that the storage medium 30 is connected, the control unit 11 of the access point device 10 according to the present embodiment repeats at a predetermined timing, and whether the storage medium 30 is still connected (storage medium) Whether or not 30 is removed from the interface section 16) may be checked.

  In this example, the access point device 10 may return the setting information included in the execution information to the first setting information when detecting that the storage medium 30 has been removed. Specifically, the access point device 10 is the case where the setting information of the execution information is stored in the non-volatile storage unit 13 (when the setting information stored in the non-volatile storage unit 13 is used), As described above, when the first setting information is stored in the nonvolatile storage unit 13 as the setting save information, the setting save information is overwritten on the setting information of the execution information stored in the nonvolatile storage unit 13. ,restart. If the first setting information is stored as the reference information in the nonvolatile storage unit 13, the first setting information stored as the reference information is executed even when the setting information is not saved. Just overwrite the setting information of the business information and restart.

  Further, when the storage location of the setting information referred to at the time of startup is stored in the nonvolatile storage unit 13, when the access point device 10 detects that the storage medium 30 has been removed, the information indicating the storage location of the setting information Is rewritten to represent the nonvolatile storage unit 13 and restarted.

  Thereby, the use of the SSID (for example, temporary SSID in the above example) set by the second setting information is stopped. As described above, in the example of the present embodiment, the control unit 11 of the access point apparatus 10 detects from the storage medium connected to the interface, and is set from a predetermined communication destination when the storage medium is connected to the interface. In addition to functioning as a setting change means for changing the setting when it is determined that the setting rewrite permission information is received by the determination means, the determination means for determining whether or not the rewrite permission information has been received, and further detection When the means detects the removal of the storage medium, and the removal is detected by the detection means, the setting is further changed (such as returning to the state before the change by the setting changing means or returning to the initial setting). Also works.

[Processing when the storage medium is removed on the switch device side]
Further, after determining that the storage medium 30 ′ is connected, the switch device 20 of the wireless communication system 1 of the present embodiment repeats at every predetermined timing to check whether the storage medium 30 ′ is still connected ( Whether or not the storage medium 30 ′ has been removed from the interface unit 24 may be checked.

  In this example, when the switch device 20 detects that the storage medium 30 ′ has been removed, the switch device 20 sends packet information including information indicating that to the access point device 10. When receiving the packet information, the access point device 10 returns the setting information included in the execution information to the first setting information. Specifically, the access point device 10 is the case where the setting information of the execution information is stored in the non-volatile storage unit 13 (when the setting information stored in the non-volatile storage unit 13 is used), As described above, when the first setting information is stored in the nonvolatile storage unit 13 as the setting save information, the setting save information is overwritten on the setting information of the execution information stored in the nonvolatile storage unit 13. ,restart. If the first setting information is stored as the reference information in the nonvolatile storage unit 13, the first setting information stored as the reference information is executed even when the setting information is not saved. Just overwrite the setting information of the business information and restart.

  Further, when the storage location of the setting information to be referred to at the time of startup is stored in the nonvolatile storage unit 13, the access point device 10 transmits packet information including information indicating that the storage medium 30 'has been removed to the switch device. When the information is received from 20, the information indicating the storage location of the setting information is rewritten to the information indicating the non-volatile storage unit 13 and restarted.

[Provision of website]
Furthermore, in an example of the present embodiment, website information to be provided via a web server is recorded in the storage medium 30. And the access point apparatus 10 is good also as performing the process which sends out the said website information to the terminal side by the request | requirement from the terminal side.

  In this example, when the access point device 10 detects that the storage medium 30 is connected, the access point device 10 checks whether or not website data (HTML data) is stored in the connected storage medium 30. Specifically, if a directory having a predetermined name is stored in the storage medium 30, it is checked whether HTML data having a predetermined file name such as index.html is stored in the directory.

  When the access point device 10 determines that the website data is stored in the storage medium 30, the access point device 10 starts the web server (if it is already running, the web server may be used), and the web server In response to a request from a terminal connected wirelessly, the web page in the storage medium 30 is provided to the terminal side. In this example of the present embodiment, the access point device 10 itself operates as a web server and provides the web page in the storage medium 30 to the terminal side. However, the present embodiment is not limited to this. The present invention is not limited, and a web page in the storage medium 30 may be uploaded to a predetermined external web server (connected via a network), and the web page may be provided to the external web server. Good. In this case, if communication with an external web server is impossible, communication may be repeated and uploaded when communication is possible.

[Usage example]
In the description so far, in the wireless communication system 1 according to the present embodiment, the storage medium 30 and 30 ′ are connected to the switch device 20 and the access point device 30, respectively, so that anyone can use the wireless communication in an emergency. The system 1 is assumed to function.

  However, the usage example of the wireless communication system 1 of the present embodiment is not limited to an emergency. For example, when the wireless communication system 1 is deployed in a school, a plurality of storage media 30a, b ..., 30'a, 30'b, etc. are prepared for emergency use, holidays, sports events, etc. In addition, the storage medium 30'a, 30'b, and so on are appropriately set such as second setting information for holidays, website data, second setting information for events, website data, and so on. The second setting information may be recorded.

  In this example, the switch device 20 reads the second setting information and the website data from the connected storage medium 30 ′ and provides it to the access point device 10, and the access point device 10 is provided with the provided second information. While restarting using the setting information, the website data is stored in the connected storage medium 30 and used.

  As a result, simply changing the storage medium 30, 30 '(or simply pulling out the storage medium 30, 30'), the setting is changed according to each scene, and the setting can be changed by a simple operation. Become.

  Specifically, it is assumed that the storage medium 30 for an event such as an athletic meet stores website data for storing and displaying photographic images and the like. Further, the temporary SSID in such an example may be a guest SSID set in advance.

  Furthermore, although the case where the communication control device is the switch device 20 has been described as an example in the description so far, the present embodiment is not limited thereto. For example, the communication control device may be another access point device 10 ′ that is communicably connected to the access point device 10. This access point device 10 'basically has the same configuration as that of the access point device 10, but is slightly different in that the control unit 11 realizes the same operation as that of the switch device 20 described above.

  In this case, the wireless communication system 1 is set with a predetermined normal time SSID, and is allocated to an access point device 10 capable of communication using the normal time SSID and a place where the access point 10 can communicate. Access point device 10 '.

  Here, an administrator of the wireless communication system 1 (a faculty member or the like when installed in a school) connects the storage medium 30 to the interface unit 16 of the access point device 10, and connects the storage medium 30 'to the access point device 10'. When connected to the interface unit, the access point device 10 ′ sends packet information including setting rewrite permission information read from the storage medium 30 ′ to the access point device 10.

  The access point device 10 receives this packet information. In this example, the setting rewrite permission information includes a default SSID (temporary SSID) as the second setting information, and includes a security setting of a logical access point identified by the temporary SSID. It shall be assumed.

  When the access point device 10 detects that the storage medium 30 is connected, the access point device 10 determines whether or not setting rewrite permission information is received from another access point device 10 '. If it is determined that the setting rewrite permission information has been received, the access point device 10 reads the second setting information from the received setting rewriting permission information, and executes information in the nonvolatile storage unit 13. The setting information (first setting information) is overwritten, and the access point device 10 is restarted.

  Here, since the setting information representing the security setting using the temporary SSID is copied to the storage unit 12 and the access point device 10 is restarted, the access point device 10 uses the temporary SSID thereafter. Wireless communication is performed with a terminal requesting connection. Therefore, in response to an instruction from the terminal performing the wireless communication, other terminals connected via the wireless LAN or wired LAN, web servers on the Internet connected via the router R, etc. are instructed. The data received from the terminal is sent to the destination. In addition, data received from the other terminal or a web server on the Internet is transmitted to the terminal.

  In this example, the access point device 10 also functions as a communication control device, and sends packet information including setting rewrite permission information (stored in the storage medium 30) to the access point device 10 '. May be. The access point device 10 ′ may also determine whether or not setting rewrite permission information has been received from another access point device 10 when detecting that the storage medium 30 ′ is connected. If it is determined that the setting rewrite permission information has been received, the access point device 10 ′ reads the second setting information from the received setting rewriting permission information, and executes information in the nonvolatile storage unit 13. The access point device 10 'is restarted.

  According to this example, by connecting the storage media 30 and 30 'to a pair of access point devices 10 and 10' that can communicate with each other, each access point device 10 and 10 'starts an operation based on the second setting information. Will be.

  In this example, as in the case of using the switch device 20, when the storage medium 30, 30 'is removed, the setting information of the execution information is used before the first setting information (the storage medium 30, 30' is connected). The setting information) may be rewritten and restarted.

  Further, in the above description, the second setting information is included in the setting rewriting permission information. However, the present embodiment is not limited to this, and the access point 10 that has determined that the setting rewriting permission information has been received. Obtain the second setting information from a predetermined server device specified by predetermined information (or included in the setting rewrite permission information), and use the second setting information acquired from the server device. It is good to do. According to this example, by changing the setting of the server device, the temporary SSID can be changed as appropriate, and the temporary management of the temporary SSID becomes possible.

  In the description so far, the restart has been to restart the access point devices 10 and 10 '. However, the restart in the present embodiment does not necessarily require the entire restart, and at least wireless If it is sufficient to restart the wireless communication unit 15 as a communication unit, only the wireless communication unit 15 may be restarted (restart of a program that controls the wireless communication unit 15 or the like).

DESCRIPTION OF SYMBOLS 1 Wireless communication system 10, 10 'Access point apparatus, 11 Control part, 12 Storage part, 13 Non-volatile storage part, 14 Wired communication part, 15 Wireless communication part, 16 Interface part, 20 Switch apparatus, 21 Wired LAN port, 22 switch control unit, 23 storage unit, 24 interface unit, 30 ′ storage medium, 30 storage medium, 40 access point function unit, 50 setting information rewriting unit, 51 detection unit, 52 determination unit, 53 setting change processing unit.

Claims (6)

An access point device comprising an interface to which a communication means and a storage medium are connected,
Detecting means for detecting connection of a storage medium to the interface;
Determining means for determining whether or not setting rewrite permission information is received from a predetermined communication destination when a storage medium is connected to the interface;
A setting changing unit for changing a setting relating to communication when it is determined that the setting rewriting permission information is received by the determining unit;
Including access point devices. The access point device according to claim 1,
The access point device that determines that the setting rewriting permission information has been received when the information received from the predetermined communication destination is information that matches information stored in the connected storage medium. The access point device according to claim 1 or 2,
The setting rewriting permission information is an access point device including setting information related to communication. Connected to the access point device,
An interface to which a storage medium is connected;
A communication control device that reads out the setting rewrite permission information and transmits it to the access point device when a storage medium storing the setting rewriting permission information is connected to the interface. An access point device and a communication control device connected to the access point device;
The communication control device outputs setting rewrite permission information,
The access point device is
An interface to which a storage medium is connected;
Detecting means for detecting connection of a storage medium to the interface;
Determining means for determining whether or not setting rewrite permission information is received from the communication control device when a storage medium is connected to the interface;
A setting changing unit for changing a setting relating to communication when it is determined that the setting rewriting permission information is received by the determining unit;
A communication system including: An access point device having an interface to which a storage medium is connected,
Detecting means for detecting connection of a storage medium to the interface;
Determining means for determining whether or not setting rewrite permission information is received from a predetermined communication destination when a storage medium is connected to the interface;
A setting changing unit for changing a setting relating to communication when it is determined that the setting rewriting permission information is received by the determining unit;
Program to function as.

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