JP2016052023A - Wireless lan access point device and method for setting essid to wireless lan access point device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent reduction in the communication possibility of a wireless LAN station device (wireless LAN-STA) that wirelessly connects with a wireless LAN access point device (wireless LAN-AP).SOLUTION: A wireless LAN-AP comprises: a state change detection unit for detecting change in an installation state or change prediction; a first device determination unit for determining the presence of a first wireless LAN-STA that requires roaming when the installation state is changed; a second device determination unit for determining the presence of another wireless LAN-AP; and an ESSID setting unit that sets the ESSID of the wireless LAN-AP and changes the ESSID if it is determined that there is a first wireless LAN-STA and it is determined that there is another wireless LAN-AP when change in the installation state or change prediction is detected.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wireless connection between a wireless LAN station device and a wireless LAN access point device when the wireless LAN access point device is taken out.

  In recent years, wireless LAN access point devices with excellent portability have been taken out of the house together with communication terminals that operate as wireless LAN station devices such as notebook personal computers and multi-function telephone terminals (so-called smartphones). Has been proposed to connect to a network such as the Internet via a wireless LAN access point device. For example, the portable network device described in Patent Document 1 operates as a wireless LAN access point for a client both at home and away from home, and further operates as a router device at a destination, and is received from the client. Relay data packets to the mobile communication network.

JP 2012-114844 A

  However, conventionally, there has been a problem that the communication possibility of the wireless LAN station device is lowered when the wireless LAN access point device is taken out. Specifically, for example, when a wireless LAN access point device is taken out, a wireless LAN station device (hereinafter referred to as “remaining STA”) that is left in the house has a signal strength received wirelessly from the wireless LAN access point device. If the signal strength is low, the existing wireless connection is not immediately changed to another wireless LAN access point device, even if the signal strength decreases. In order to maintain the wireless connection with the wireless LAN access point device that has been taken out earlier, reconnection may be attempted. In this case, since it takes a long time for the remaining STA to change communication with another wireless LAN access point device and to be able to communicate, the possibility of communication of the remaining STA decreases. Further, in the conventional technology, not only the decrease in the communication possibility of the remaining STA but also the technology for suppressing the decrease in the communication possibility of the wireless LAN station apparatus taken out together with the wireless LAN access point apparatus is further improved. There was room.

  Note that the above-described problem may occur when the wireless LAN access point device is taken out from an arbitrary network such as an office network or a school network as well as a home network. As described above, in the conventional wireless LAN access point device, it has been desired to suppress a decrease in communication possibility of the connected wireless LAN station device. In addition, the conventional wireless LAN access point device has been desired to be reduced in size, cost, resource saving, easy construction, improved usability, and the like.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms.

(1) According to an aspect of the present invention, there is provided a wireless LAN access point apparatus in which a first ESSID (Extended Service Set Identifier) is set. The wireless LAN access point device includes a state change detection unit that detects that an installation state of the wireless LAN access point device has changed or that a change in the installation state is predicted; and the wireless LAN access point device The first wireless LAN station device which is a wireless LAN station device that requires roaming from the wireless LAN access point device to another wireless LAN access point device in which the first ESSID is set when the installation state of the wireless LAN changes A first device specifying unit for specifying presence / absence of a second device; a second device specifying unit for specifying presence / absence of the other wireless LAN access point device in a wireless communication range; and an ESSID for setting an ESSID of the wireless LAN access point device A setting unit, wherein the installation state has changed; Or, when it is detected that a change in the installation state is predicted, it is specified that the first wireless LAN station device is present, and that the other wireless LAN access point device is present. An ESSID setting unit that changes an ESSID set in the wireless LAN access point device from the first ESSID to a second ESSID.
According to the wireless LAN access point device of this aspect, when it is specified that there is a first wireless LAN station device and when it is specified that there is another wireless LAN access point device, that is, a wireless LAN access point. When there is a wireless LAN station device that requires roaming when the installation state of the device changes, and there is another wireless LAN access point device in which the same ESSID is set as the roaming destination, the wireless LAN access point device The ESSID is changed to the second ESSID. For this reason, when the wireless LAN access point device is taken out, the first wireless LAN station device is stopped from continuously reconnecting to the wireless LAN access point device, and wirelessly connected to another wireless LAN access point device. The point can be changed immediately. For this reason, it can suppress that the communication possibility of a 1st wireless LAN station apparatus falls.

(2) In the wireless LAN access point device according to the above aspect, when the ESSID setting unit detects that the installation state has changed or a change in the installation state is predicted, the first wireless unit When it is specified that there is no LAN station device, or when it is specified that there is no other wireless LAN access point device, the ESSID set in the wireless LAN access point device remains as the first ESSID. It is not necessary to change. According to the wireless LAN access point device of this aspect, when it is specified that there is no first wireless LAN station device, or when it is specified that there is no other wireless LAN access point device, that is, the possibility of communication. If there is no first wireless LAN station device subject to reduction suppression, or there is no roaming destination even if the ESSID of the wireless LAN access point device is changed, the communication possibility of the first wireless LAN station device is reduced. Since the ESSID is not changed in the case where it is not possible to suppress this, it is possible to suppress a decrease in the communication possibility of the wireless LAN station device taken out together with the wireless LAN access point device.

(3) The wireless LAN access point device of the above aspect further includes a port to which a network cable for wired LAN can be attached, and a cable attachment detection unit that detects the attachment state of the network cable in the port, The cable attachment detection unit may detect that the installation state has changed or that a change in the installation state is predicted based on a change in the attachment state of the network cable at the port. According to the wireless LAN access point device of this embodiment, since the installation state is changed or the change in the installation state is predicted based on the change in the mounting state of the network cable at the port, such detection is performed. It can be executed easily and in a short time. Further, when the wireless LAN access point device is taken out, the network cable is removed from the wireless LAN access point device, so that a change in the installation state of the wireless LAN access point device can be accurately detected according to the above embodiment.

(4) In the wireless LAN access point device of the above aspect, the wireless LAN access point device can be attached to a cradle, and the wireless LAN access point device further attaches the wireless LAN access point device to the cradle. A cradle attachment detection unit for detecting a state, wherein the cradle attachment detection unit changes the installation state based on whether or not the wireless LAN access point device is attached to the cradle, or the installation state It may be detected that the change of is predicted. According to the wireless LAN access point device of this embodiment, it is detected that the installation state has changed or that the change in the installation state is predicted based on the change in the presence or absence of the wireless LAN access point device attached to the cradle. Therefore, such detection can be executed easily and in a short time. Further, when the wireless LAN access point device is taken out, the wireless LAN access point device is removed from the cradle, so that a change in the installation state of the wireless LAN access point device can be detected with high accuracy according to the above embodiment.

(5) The wireless LAN access point device of the above aspect further includes a sensor that detects a change in posture of the wireless LAN access point device, wherein the state change detection unit is configured to detect the change in posture detected by the sensor. Based on this, it may be detected that the installation state has changed or that a change in the installation state is predicted. According to the wireless LAN access point device of this embodiment, it is detected that the installation state has changed or the change in the installation state is predicted based on the change in the attitude of the wireless LAN access point device by the sensor. Detection can be performed easily and in a short time. Further, when the wireless LAN access point device is taken out, the attitude of the wireless LAN access point device is likely to change. Therefore, it is possible to detect a change in the installation state of the wireless LAN access point device with the above form with high accuracy.

(6) In the wireless LAN access point device of the above aspect, when the ESSID set in the wireless LAN access point device is changed from the first ESSID to the second ESSID, the first wireless You may provide the ESSID transmission part which transmits a said 2nd ESSID with respect to the 2nd wireless LAN station apparatus which is a wireless LAN station apparatus different from a LAN station apparatus. According to the wireless LAN access point device of this aspect, the second ESSID is transmitted to the second wireless LAN station device, that is, the wireless LAN station device that does not require roaming to another wireless LAN access point device. Therefore, after the ESSID is changed in the wireless LAN access point device, the second wireless LAN station device can wirelessly connect to the wireless LAN access point device using the changed ESSID. In addition, since the second ESSID is transmitted to the second wireless LAN station device, the user can omit manually setting the second ESSID in the second wireless LAN station device.

(7) The wireless LAN access point device of the above aspect may further include a proximity wireless communication unit that performs proximity wireless communication, and the ESSID transmission unit may transmit the second ESSID by the proximity wireless communication. According to the wireless LAN access point device of this aspect, the second ESSID is transmitted to the second wireless LAN station device by proximity wireless communication, so the second wireless LAN station that the user has brought close to the wireless LAN access point device The second ESSID can only be passed to the device. For this reason, transmission of the second ESSID to an unintended wireless LAN station device can be suppressed. In addition, when the user takes out the second wireless LAN station device, the user simply brings it close to the wireless LAN access point device (for example, by storing it in the same bag), and then the second wireless LAN station device receives the second wireless LAN station device. The ESSID can be passed, which is very convenient.

(8) In the wireless LAN access point device of the above aspect, identification information of a second wireless LAN station device which is a wireless LAN station device different from the first wireless LAN station device, or the first wireless An identification information storage unit that stores identification information of the LAN station device, and an identification information acquisition unit that acquires identification information of the wireless LAN station device based on a wireless signal output from the wireless LAN station device, 1 The apparatus specifying unit compares the identification information stored in the identification information storage unit with the identification information acquired by the identification information acquisition unit, thereby determining whether the first wireless LAN station apparatus is present. May be specified. According to the wireless LAN access point device of this aspect, the identification information storage unit stores the identification information of the first station device or the identification information of the second station device, so that the wireless signal output from the wireless LAN station device is stored. By comparing the identification information obtained on the basis of the identification information stored in the identification information storage unit, the presence or absence of the first wireless LAN station device can be specified easily and accurately.

  A plurality of constituent elements of each aspect of the present invention described above are not indispensable, and some or all of the effects described in the present specification are to be solved to solve part or all of the above-described problems. In order to achieve the above, it is possible to appropriately change, delete, replace with another new component, and partially delete the limited contents of some of the plurality of components. In order to solve part or all of the above-described problems or to achieve part or all of the effects described in this specification, technical features included in one embodiment of the present invention described above. A part or all of the technical features included in the other aspects of the present invention described above may be combined to form an independent form of the present invention.

  For example, one aspect of the present invention is a device in which a first ESSID is set, and includes a state change detection unit, a first device specifying unit, a second device specifying unit, and an ESSID setting unit. It can be realized as a device. The state change detection unit can be realized as, for example, a state change detection unit that detects that the installation state of the wireless LAN access point device has changed or that a change in the installation state is predicted. For example, when the installation state of the wireless LAN access point device changes, the first device specifying unit wirelessly requires roaming from the wireless LAN access point device to another wireless LAN access point device in which the first ESSID is set. It can be realized as a first device specifying unit that specifies the presence or absence of a first wireless LAN station device that is a LAN station device. The second device specifying unit can be realized, for example, as a second device specifying unit that specifies the presence / absence of the other wireless LAN access point device within a wireless communication range. The ESSID setting unit is, for example, an ESSID setting unit that sets the ESSID of the wireless LAN access point device. When it is detected that the installation state has changed or a change in the installation state is predicted, the first is set. When it is specified that there is another wireless LAN station device, and when it is specified that there is another wireless LAN access point device, the ESSID set in the wireless LAN access point device is changed from the first ESSID to the second. It can be realized as an ESSID setting unit that changes to the ESSID. An apparatus of this type can be realized as, for example, a wireless LAN access point apparatus, but can also be realized as an apparatus other than the wireless LAN access point apparatus.

  The present invention can be realized in various forms. For example, a wireless LAN system, a method for setting an ESSID for a wireless LAN access point device, a computer program for realizing the device, system, and method, a non-temporary recording medium on which the computer program is recorded, etc. Can be realized.

BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing which shows schematic structure of the network system to which the wireless LAN access point apparatus as one Embodiment of this invention is applied. BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing which shows schematic structure of the network system to which the wireless LAN access point apparatus as one Embodiment of this invention is applied. The block diagram which shows the detailed structure of wireless LAN-AP101. The block diagram which shows the detailed structure of the communication terminal 401 in 1st Embodiment. The flowchart which shows the procedure of the ESSID setting process in 1st Embodiment. The flowchart which shows the detailed procedure of the change presence or absence identification process in 1st Embodiment. FIG. 3 is an explanatory diagram showing a configuration of a network system 500 when a wireless LAN-AP 101 and a communication terminal 401 are taken out in a situation where no communication terminal 402 exists. The flowchart which shows the procedure of the profile transmission process in 1st Embodiment. The flowchart which shows the procedure of the wireless connection process in 1st Embodiment. Explanatory drawing which shows schematic structure of the network system to which the wireless LAN access point apparatus of 2nd Embodiment is applied. Explanatory drawing which shows schematic structure of the network system to which the wireless LAN access point apparatus of 2nd Embodiment is applied. The block diagram which shows the detailed structure of wireless LAN-AP101a of 2nd Embodiment. The block diagram which shows schematic structure of the cradle 200 in 2nd Embodiment. The flowchart which shows the procedure of the change presence or absence identification process in 2nd Embodiment. The block diagram which shows the detailed structure of wireless LAN-AP101b of 3rd Embodiment. The flowchart which shows the procedure of the change presence or absence identification process in 3rd Embodiment. The flowchart which shows the procedure of the ESSID setting process in 4th Embodiment. Explanatory drawing which shows schematic structure of the network system 500b to which wireless LAN-AP in 4th Embodiment was applied. The block diagram which shows the structure of the wireless LAN access point apparatus in 5th Embodiment.

A. First embodiment:
A1. System configuration:
1 and 2 are explanatory diagrams showing a schematic configuration of a network system to which a wireless LAN access point device as one embodiment of the present invention is applied. The network system 500 connects three communication terminals 401, 402, and 403 to the Internet INT. In FIG. 1, three communication terminals 401 to 403 are arranged in the office. On the other hand, in FIG. 2, among the three communication terminals 401 to 403, the communication terminal 401 is taken out, and the remaining two communication terminals 402 and 403 are arranged in the office. . In the network system 500, even when all three communication terminals 401 to 403 are arranged in the office as shown in FIG. 1, only the communication terminal 401 is taken out as shown in FIG. Also in this case, the three communication terminals 401, 402, and 403 are connected to the Internet INT, respectively.

  The network system 500 includes three wireless LAN (Local Area Network) access point devices (hereinafter referred to as “wireless LAN-AP”) 101, 102, 103, a management device 300, a router device 104, and a wired LAN 11. Is provided. The three wireless LAN-APs 101 to 103, the management device 300, and the router device 104 are all connected to the wired LAN 11. The wired LAN 11 is connected to the Internet INT via the router device 104. Since the configuration of the router device 104 is the same as that of a general router device, description of the detailed configuration is omitted.

  Of the three wireless LAN-APs 101 to 103, the wireless LAN-AP 101 corresponds to a wireless LAN access point device as an embodiment of the present invention. The wireless LAN-AP 101 is excellent in portability, and is taken out together when the communication terminal 401 is taken out as shown in FIG. When away from home, the wireless LAN-AP 101 connects the communication terminal 401 to the Internet INT via the mobile communication network 105. On the other hand, the two wireless LAN-APs 102 and 103 are both arranged in the office, and in this embodiment, they are not taken out.

  The two wireless LAN-APs 102 and 103 are wirelessly connected with a communication terminal functioning as a station as an access point in an infrastructure mode in the wireless LAN standard defined by IEEE (Institute of Electrical and Electronics Engineers) 802.11. A LAN is formed. In the example of FIG. 1, the wireless LAN-AP 103 forms a wireless LAN with the communication terminal 403. In this wireless LAN, an access point (wireless LAN-AP 103) and a station (communication terminal 403) are set with a common ESSID (Extended Service Set Identifier) “BBB”. In the example of FIG. 1, the wireless LAN-AP 102 forms a wireless LAN together with the wireless LAN-AP 101 and the two communication terminals 401 and 402. In this wireless LAN, access points (wireless LAN-APs 101 and 102) and stations (communication terminals 401 and 402) are set with “AAA” which is a common ESSID. In the example of FIG. 2, the wireless LAN-AP 102 forms a wireless LAN together with the communication terminal 402. In this wireless LAN, the wireless LAN-AP 102 and the communication terminal 402 each have a common ESSID “AAA”. "Is set. As shown in FIG. 2, the wireless LAN-AP 101 and the communication terminal 401 taken out together form a wireless LAN at the place where they are out, and in such a wireless LAN, the wireless LAN-AP 101 and the communication terminal 401 are formed. In addition, “CCC” which is a common ESSID is set. A detailed setting method of the ESSID will be described later.

  The three wireless LAN-APs 101 to 103 each have “Thin-AP” mode and “Fat-AP” mode as operation modes when operating as wireless LAN access points. Thin-AP mode refers to data exchange with a wireless LAN station (in this embodiment, communication terminals 401 to 403) and data relay, and various setting values related to such data relay (for example, This is a mode in which determination and setting of values such as ESSID, authentication method, encryption key, and wireless channel to be used (hereinafter referred to as “wireless LAN profile”) are not performed. On the other hand, the Fat-AP mode is a mode in which the wireless LAN profile is determined and set by itself, along with data exchange with the wireless LAN station and data relay. In the Thin-AP mode, determination and setting of the wireless LAN profile are executed by the management apparatus 300. The management device 300 functions as a so-called wireless LAN controller, and centrally manages the three wireless LAN-APs 101 to 103 in the connection mode shown in FIG. 1 and two wireless LANs in the connection mode shown in FIG. The LAN-APs 102 and 103 are centrally managed. More specifically, the management apparatus 300 determines the wireless LAN profile used in the wireless LAN-AP for the wireless LAN-AP operating in the Thin-AP mode among the three wireless LAN-APs 101 to 103. Then, the determined wireless LAN profile is notified to the corresponding wireless LAN-AP. Note that the configuration of the management device 300 is the same as that of a general wireless LAN controller device, and thus a detailed description of the configuration is omitted.

  FIG. 3 is a block diagram illustrating a detailed configuration of the wireless LAN-AP 101. The wireless LAN-AP 101 operates as an access point in an infrastructure mode in the wireless LAN standard defined in IEEE 802.11 in both the connection mode shown in FIG. 1 and the connection mode shown in FIG. In the connection mode illustrated in FIG. 1, the wireless LAN-AP 101 operates as a bridge and relays a layer 2 data frame in an OSI (Open Systems Interconnection) reference model. On the other hand, in the connection mode illustrated in FIG. 2, the wireless LAN-AP 101 operates as a router and relays layer 3 data packets in the OSI reference model. In the present embodiment, the wireless LAN-AP 101 operates as a bridge when it detects that a router exists in the network to which it belongs, and operates as a router when it cannot detect that a router exists in the network. To do.

  The wireless LAN-AP 101 includes a CPU (Central Processing Unit) 110, a flash ROM (Read Only Memory) 120, a RAM (Random Access Memory) 125, a wired LAN communication unit 130, a wireless LAN communication unit 140, and a mobile unit. A communication unit 150, a near field communication unit 160, and an NFC (Near Field Communication) tag reader / writer 170 are provided. Each of these components is connected to the internal bus 190. Each component is supplied with power from a battery (not shown) included in the wireless LAN-AP 101. The NFC tag reader / writer 170 may be included in the close proximity wireless transfer unit 160.

  The CPU 110 executes a control program stored in the flash ROM 120, thereby causing the first AP function unit 111, the second AP function unit 112, the operation mode switching unit 113, the state change detection unit 114, the first device specifying unit 115, the first 2 Functions as the device identification unit 116, the ESSID setting unit 117, the profile transmission unit 118, and the identification information acquisition unit 119.

  The first AP function unit 111 realizes the above-described function as a Thin-AP when the wireless LAN-AP 101 functions in the Thin-AP mode. The second AP function unit 112 realizes the above-described function as the Fat-AP when the wireless LAN-AP 101 functions in the Fat-AP mode. The operation mode switching unit 113 switches the function as the wireless LAN access point to either the Thin-AP mode or the Fat-AP mode. Specifically, the operation mode switching unit 113 periodically transmits a response request having the IP address of the management device 300 as a destination address, and based on the reception result of the response to the response request, the management device 300 in the same network. Identify changes in presence / absence status. When a change occurs in the result of specifying whether or not the management device 300 is present, that is, when a change from a state where there is no management device 400 in the same network is specified, the operation mode is set to the Thin-AP mode. When the change from the state in which the management device 400 is present to the state in which the management device 400 is absent is specified, the operation mode is set to the Fat-AP mode. For example, an echo request (so-called ping) defined in ICMP (Internet Control Message Protocol) may be adopted as the response request described above. By specifying the number of hops “1” in this echo request, it is possible to specify a change in the presence / absence state of the management device 300 in the same network based on the response reception result.

  As shown in FIG. 2, the state change detection unit 114 starts from a state where the installation state of the wireless LAN-AP 101 is placed and used in the office as shown in FIG. 1 (hereinafter referred to as “placed state”). Detecting a change to a state of being taken out (hereinafter referred to as a “takeout state”). The first device specifying unit 115 specifies the presence or absence of a wireless LAN station (communication terminal) that satisfies a predetermined condition in an ESSID setting process described later. The second device specifying unit 116 specifies the presence or absence of a wireless LAN-AP that satisfies a predetermined condition in an ESSID setting process described later. Detailed operations of the first device specifying unit 115 and the second device specifying unit 116 will be described later. The ESSID setting unit 117 determines and sets the ESSID used by itself when the wireless LAN-AP 101 is operating in the Fat-AP mode. Further, the ESSID setting unit 117 sets the ESSID received from the management apparatus 300 as the ESSID used by itself when the wireless LAN-AP 101 is operating in the Thin-AP mode. The profile transmission unit 118 transmits a wireless LAN profile to a wireless LAN station (communication terminal) in a profile transmission process described later. The identification information acquisition unit 119 acquires identification information of the wireless LAN station (communication terminal) based on a wireless signal output from a wireless LAN station (communication terminal) arranged around the wireless LAN-AP 101. In this embodiment, a MAC (Media Access Control) address is used as identification information of a wireless LAN station (communication terminal).

  In addition to the control program described above, the flash ROM 120 stores a wireless LAN profile storage unit 121 and a MAC address list storage unit 122. The wireless LAN profile storage unit 121 stores a wireless LAN profile used when performing wireless communication with a wireless LAN station (two communication terminals 401 and 402). The MAC address list storage unit 122 stores a list in which MAC addresses of communication terminals that may be taken out are stored. Such a list is written in advance by the administrator of the network system 500 and stored in the MAC address list storage unit 122. In this embodiment, it is assumed that only the MAC address of the communication terminal 401 is described in the list.

  The wired LAN communication unit 130 has an interface for connecting to the wired LAN 11. As such an interface, for example, various interfaces standardized in IEEE 802.3ab, 802.3u, etc. can be adopted. The wired LAN communication unit 130 includes a port 131 to which a network cable can be attached, and an attachment state detection unit 132 that detects the attachment state (presence / absence of attachment) of the network cable to the port 131. In the present embodiment, the attachment state detection unit 132 detects link up or link down at the port 131. When link up is detected, the attachment state detection unit 132 detects that a network cable is attached to the port 131, and performs link down. If detected, it is detected that the network cable is not attached to the port 131.

  The wireless LAN communication unit 140 includes a modulator, an amplifier, and an antenna. The wireless LAN communication unit 140 operates as a wireless LAN access point in accordance with, for example, an access control method compliant with IEEE802.11a / b / g / n / ac, and serves as a wireless LAN station. Communication is performed with functioning communication terminals 401 and 402. In the ESSID setting process described later, the wireless LAN station operates as a wireless LAN station and scans surrounding wireless LAN-APs. The mobile communication unit 150 includes a modulator, an amplifier, and an antenna, and conforms to standards such as 3G / HSPA (High Speed Packet Access), LTE (Long Term Evolution), and Wimax (Worldwide Interoperability for Microwave Access). As a mobile communication terminal that executes wireless data communication, wireless communication is performed with a base station of the mobile communication network 105.

  The close proximity wireless communication unit 160 includes a modulator, an amplifier, and an antenna, and performs wireless communication using a magnetic field as a communication medium with a relatively short maximum communication distance. In the present embodiment, NFC (Near Field Communication) defined in ISO / IEC18092 is adopted as such wireless communication. In place of ISO / IEC18092, ISO / IEC21481, ISO / IEC14443 (MIFARE (registered trademark)), TransferJet (registered trademark), Felica (registered trademark), RFID defined in ISO / IEC15693, etc. Radio communication of an arbitrary method having a relatively short maximum communication distance such as Radio Frequency IDentification may be employed.

  The NFC tag reader / writer 170 writes data to the NFC tag 171 and reads data from the NFC tag 171. As will be described later, the wireless LAN profile is stored in the NFC tag 171.

  Since the two wireless LAN-APs 102 and 103 are the same as a general wireless LAN access point device, the detailed configuration thereof is omitted. Note that the two wireless LAN-APs 102 and 103 operate as a bridge in both of the connection mode shown in FIG. 1 and the connection mode shown in FIG. 2, and relay the layer 2 data frame in the OSI reference model.

  FIG. 4 is a block diagram showing a detailed configuration of the communication terminal 401 in the first embodiment. In this embodiment, the communication terminal 401 is configured as a multi-function telephone terminal (so-called smartphone), and includes a CPU 410, a flash ROM 420, a wireless LAN communication unit 440, a mobile communication unit 450, and a proximity wireless communication unit 460. And a display unit 470. Each of these components is connected to the internal bus 490.

  The CPU 410 functions as a call control unit 411, a user interface (UI) control unit 412, and a candidate profile reception unit 413 by executing a control program stored in the flash ROM 420. The call control unit 411 executes call control for voice calls via the mobile communication unit 450. The user interface control unit 412 controls image generation of various operation screens displayed on the display unit 470, transition of operation screens, and the like. Candidate profile receiver 413 receives a wireless LAN profile from wireless LAN-AP 101 in a profile transmission process to be described later.

  In addition to the control program described above, the flash ROM 420 stores a wireless LAN profile storage unit 421 and a candidate profile storage unit 422. The wireless LAN profile storage unit 421 stores a wireless LAN profile used when performing wireless communication with a wireless LAN-AP (in this embodiment, wireless LAN-AP 101). The candidate profile storage unit 422 stores profiles that are candidates for wireless LAN profiles (hereinafter referred to as “candidate profiles”). The candidate profile is stored in the candidate profile storage unit 422 in the profile transmission process described later. Note that the candidate profile may be stored in the candidate profile storage unit 422 by the user manually setting the candidate profile.

  Since the wireless LAN communication unit 440 has the same configuration as the wireless LAN communication unit 140 of the wireless LAN-AP 101 described above, detailed description thereof is omitted. The mobile communication unit 450 has the same configuration as the mobile communication unit 150 of the wireless LAN-AP 101 described above, and the close proximity wireless communication unit 460 has the same configuration as the close proximity wireless communication unit 160 of the wireless LAN-AP 101 described above. Detailed description thereof is omitted.

  The display unit 470 is configured by a touch panel display, displays an image stored in the flash ROM 420, various menu screens, and the like, and outputs information related to a touch state of a touch pen, a finger, and the like.

  Here, as shown in FIG. 1, when the wireless LAN-AP 101 is placed, the two communication terminals 401 and 402 are both connected to the Internet INT by wirelessly connecting to the wireless LAN-AP 101. The On the other hand, as shown in FIG. 2, when the wireless LAN-AP 101 is in the take-out state, the communication terminal 401 connects to the Internet INT via the mobile communication network 105 by wirelessly connecting to the wireless LAN-AP 101. The communication terminal 402 is connected to the Internet INT by wireless connection with the wireless LAN-AP 102. In the network system 500 of the present embodiment, an ESSID setting process, a wireless connection process, and a profile transmission process, which will be described later, are executed, whereby a communication terminal (in the office that is left in the office when the wireless LAN-AP 101 is taken out) Hereinafter, the wireless connection destination of the communication terminal 402 which is called “remaining terminal” is quickly changed to the wireless LAN-AP 102. Thereby, the communication possibility of the communication terminal 402 which is a remaining terminal is improved. In addition, when there is no communication terminal 402 that is a remaining terminal, the communication terminal 401 is an ESSID of the wireless LAN-AP 101 and a communication terminal that is taken out together with the wireless LAN-AP 101 (hereinafter referred to as a “take-out terminal”). The communication possibility of the communication terminal 401 which is a take-out terminal is improved so that the ESSID is not changed.

  The wireless LAN-AP 101 corresponds to the wireless LAN access point device in the claims. Further, ESSID “AAA” is the first ESSID in the claims, the remaining terminal (communication terminal 402) is the first wireless LAN station device in the claims, the MAC address of the communication terminal 401 is the identification information in the claims, The take-out terminal (communication terminal 401) corresponds to the second wireless LAN station device in the claims, and the MAC address list storage unit 122 corresponds to the identification information storage unit in the claims.

A2. ESSID setting process:
FIG. 5 is a flowchart showing the procedure of ESSID setting processing in the first embodiment. The ESSID setting process is a process for setting the ESSID among the setting items of the wireless LAN profile used when the wireless LAN-AP 101 is wirelessly connected to the wireless LAN station. In the wireless LAN-AP 101, the ESSID setting process is executed when the power is turned on. In the wireless LAN-AP 101, “AAA” shown in FIG. 1 is set in advance as an initial value of the ESSID.

  The state change detection unit 114 specifies whether or not the installation state of the wireless LAN-AP 101 has changed from the placement state to the take-out state, or whether or not a change is predicted (hereinafter referred to as “change presence / absence specification processing”). Is called) (step S105). FIG. 6 is a flowchart showing a detailed procedure of the change presence / absence specifying process in the first embodiment. The state change detection unit 114 determines whether a network cable is attached to the port 131 based on the detection result by the attachment state detection unit 132 (step S205).

  When it is determined that the network cable is attached to the port 131 (step S205: YES), the state change detection unit 114 specifies that there is no change or prediction of the installation state (step S210). A network cable attached to the port 131 means that the wireless LAN-AP 101 is in a mounted state. Therefore, in this case, the installation state does not change from the placement state to the take-out state, and the change is not predicted.

  On the other hand, when it is determined that the network cable is not attached to the port 131 (step S205: NO), the state change detection unit 114 specifies that there is a change in the installation state or a change prediction (step S215). . The fact that the network cable is not attached to the port 131 means that the network cable is disconnected from the port 131 and the installation state of the wireless LAN-AP 101 is taken out as shown in FIG. This means that the wireless LAN-AP 101 is still located in the office and is expected to be taken out to the outside.

  Returning to FIG. 5, the state change detection unit 114 determines whether there is a change in the installation state of the wireless LAN-AP 101 or a change prediction based on the result of step S105 (step S110). If it is determined that there is no change or no change in the installation state (step S110: NO), the process returns to step S105 described above. Therefore, in this case, the ESSID of the wireless LAN profile of the wireless LAN-AP 101 does not change.

  On the other hand, when it is determined that there is a change in the installation state or a change prediction (step S110: YES), the second device specifying unit 116 sets the currently set ESSID (if initially executed, It is specified whether or not another wireless LAN-AP with the same ESSID as the value “AAA” exists in a wireless communicable range (step S115). Specifically, the second device specifying unit 116 operates the wireless LAN communication unit 140 as a wireless LAN station, performs active scan or passive scan, and whether there is another wireless LAN-AP in which the same ESSID is set. Is identified.

  If it is determined that another wireless LAN-AP of the same ESSID does not exist in a wireless communicable range (step S115: NO), the process returns to step S105 described above. Therefore, in this case, the ESSID of the wireless LAN profile of the wireless LAN-AP 101 does not change. For example, if the wireless LAN-AP 102 shown in FIG. 1 does not exist, the communication terminal 402 loses the wireless LAN-AP that can be wirelessly connected when the installation state of the wireless LAN-AP 101 changes to the take-out state. Therefore, in this case, while the communication possibility of the communication terminal 402 is reduced, the ESSID does not change, so the communication possibility of the communication terminal 401 taken out together with the wireless LAN-AP 101 does not need to be reduced.

  On the other hand, when it is determined that another wireless LAN-AP of the same ESSID exists in a range where wireless communication is possible (step S115: YES), the first device specifying unit 115 allows the remaining terminal to perform wireless communication (Step S120). Specifically, the first device specifying unit 115 is a list stored in the MAC address list storage unit 122 among the currently connected wirelessly connected communication terminals (MACs of communication terminals that may be taken out. When there is a communication terminal having a MAC address not listed in the address list), it is determined that the remaining terminal exists in a range where wireless communication is possible. On the other hand, when there is no communication terminal not listed in the list, that is, when the MAC addresses of all the communication terminals that are currently wirelessly connected are listed, the remaining terminals are in a range where wireless communication is possible. Judge that not. In the example of FIG. 1, two communication terminals 401 and 402 are wirelessly connected to the wireless LAN-AP 101. Among these, the MAC address of the communication terminal 402 is not described in the MAC address list. Therefore, it is determined that there is a remaining terminal.

  If it is determined that the remaining terminal does not exist within the wireless communication range (step S120: NO), the process returns to step S105 described above. Therefore, in this case, the ESSID of the wireless LAN profile of the wireless LAN-AP 101 does not change.

  FIG. 7 is an explanatory diagram showing a configuration of the network system 500 when the wireless LAN-AP 101 and the communication terminal 401 are taken out to the outside in a situation where the communication terminal 402 does not exist. As illustrated in FIG. 7, when the communication terminal 402 does not exist in the network system 500, the ESSID of the wireless LAN-AP 101 remains “AAA” and does not change. For this reason, the communication possibility of the communication terminal 401 taken out with the wireless LAN-AP 101 does not need to be lowered. In addition, since there is no remaining terminal in the wireless LAN in which ESSID “AAA” is set in the office, there is no remaining terminal whose communication possibility decreases even if the wireless LAN-AP 101 is taken out.

  On the other hand, as shown in FIG. 5, when it is determined that the remaining terminal is within a wireless communicable range (step S120: YES), the ESSID setting unit 117 changes the value of the ESSID of the wireless LAN profile. (Step S125). In the example of FIG. 1, since it is determined that the communication terminal 402 (remaining terminal) is within a wireless communicable range, the ESSID value of the wireless LAN-AP 101 is changed from “AAA” to “CCC” as shown in FIG. Changed to Since the value of the ESSID is changed in this way, the communication terminal 402 that is a remaining terminal can continuously reconnect to the wireless LAN-AP 101 regardless of the signal strength received wirelessly from the wireless LAN-AP 101. The wireless connection destination is immediately changed to the wireless LAN-AP 102 which is another wireless LAN-AP in which the same ESSID “AAA” is set. For this reason, the fall of the communication possibility of the communication terminal 402 can be suppressed.

  After completion of the above-described step S125, the ESSID setting unit 117 controls the tag reader / writer 170 to write the wireless LAN profile including the changed ESSID value in the NFC tag 171 (step S130).

  When steps S125 and S130 described above are executed, the ESSID of the wireless LAN-AP 101 is changed, so that the communication terminal 401 brought out with the wireless LAN-AP 101 temporarily loses the wireless connection destination. However, a profile transmission process and a wireless connection process, which will be described later, are executed, so that a decrease in communication possibility of the communication terminal 401 is suppressed.

A3. Profile transmission processing:
FIG. 8 is a flowchart showing the procedure of the profile transmission process in the first embodiment. When the wireless LAN-AP 101 and the communication terminal 401 detect an NFC device in proximity to each other within a predetermined distance, profile transmission processing is executed. Note that the above-mentioned “close to a predetermined distance” means that the wireless LAN-AP 101 and the communication terminal 401 are arranged at a position separated by a distance (for example, a distance of tens of centimeters or less) that is less than or equal to the maximum communication distance in NFC. This means, for example, that the wireless LAN-AP 101 and the communication terminal 401 are in contact with each other.

  First, an NFC communication path is established between the proximity wireless communication unit 160 of the wireless LAN-AP 101 and the proximity wireless communication unit 460 of the communication terminal 401 (step S305). The proximity wireless communication unit 160 of the wireless LAN-AP 101 controls the tag reader / writer 170 to transmit the wireless LAN profile written in the NFC tag 171 to the communication terminal 401 using NFC (step S310). . When steps S125 and S130 of the ESSID setting process described above are executed and the wireless LAN profile including the changed ESSID is stored in the NFC tag 171, the wireless LAN profile is stored in the communication terminal 401 by this step S310. Sent.

  In the communication terminal 401, the candidate profile receiving unit 413 receives the wireless LAN profile from the wireless LAN-AP 101, and stores the received wireless LAN profile as a candidate profile in the candidate profile storage unit 422 (step S315). Thereafter, when the wireless LAN-AP 101 and the communication terminal 401 are moved away from each other, the NFC communication path is disconnected (step S320).

  Through the above profile transmission process, when the ESSID is changed in the wireless LAN-AP 101, the wireless LAN profile including the changed ESSID is stored as a candidate profile in the communication terminal 401.

A4. Wireless connection processing:
FIG. 9 is a flowchart showing the procedure of the wireless connection process in the first embodiment. In each of the communication terminals 401 to 403 of the network system 500, when the power is turned on, a wireless connection process is executed. In the following, the procedure will be described on behalf of the communication terminal 401.

  The wireless LAN communication unit 440 of the communication terminal 401 stands by until the wireless connection with the wireless LAN-AP is disconnected (step S405). When the wireless connection is disconnected (step S405: YES), the wireless LAN communication unit 440 is disconnected. The presence / absence of another wireless LAN-AP (hereinafter referred to as “roaming candidate AP”) in which the same ESSID is set as the ESSID of the wireless LAN-AP that was the communication target in the established wireless connection is determined (step S410). . Specifically, the wireless LAN communication unit 440 determines whether there is a roaming candidate AP in which the same ESSID is set as the ESSID “AAA” set in the wireless LAN-AP 101 by a beacon output from the surrounding wireless LAN-AP. Determine.

  If it is determined that there is a roaming candidate AP (step S410: YES), the wireless LAN communication unit 440 establishes a wireless connection with the corresponding roaming candidate AP (step S415). For example, when the connection state in FIG. 1 is changed to the connection state in FIG. 2, the communication terminal 402 is disconnected from the wireless LAN-AP 101, so “AAA” that is the ESSID of the wireless LAN-AP 101. And wireless connection with the wireless LAN-AP 102 in which the same ESSID is set. In addition, immediately after the ESSID is changed in the wireless LAN-AP 101, the communication terminal 401 is not taken out to the outside and before the profile transmission process is completed, the communication terminal 401 The wireless connection with the wireless LAN-AP 102 is performed in the same manner as described above.

  If it is determined in step S410 described above that there is no roaming candidate AP (step S420), the wireless LAN communication unit 440 can connect using the candidate profile stored in the candidate profile storage unit 422. -It is determined whether or not an AP exists (step S420). Specifically, for example, a beacon output from a surrounding wireless LAN-AP is analyzed, and depending on whether there is a beacon that includes the same information as the ESSID and encryption method included in the candidate profile, The presence / absence of a possible wireless LAN-AP is determined. If it is determined that there is a wireless LAN-AP that can be connected using the candidate profile (step S420: YES), the wireless LAN communication unit 440 uses the corresponding candidate profile to connect to the corresponding wireless LAN-AP. Wireless connection is made (step S425). On the other hand, if it is determined that there is no wireless LAN-AP that can be connected using the candidate profile (step S420: NO), step S420 is repeated until it is determined that such a wireless LAN-AP exists. Run.

  For example, as shown in FIG. 2, when the wireless LAN-AP 101 after the ESSID is changed and the communication terminal 401 are taken out together and the beacon output from the wireless LAN-AP 102 cannot be received, In communication terminal 401, it is determined in step S410 described above that there is no roaming candidate AP. Here, when the wireless LAN profile including the changed ESSID is stored in the communication terminal 401 as a candidate profile by the profile transmission process described above, it is determined in step S410 that a roaming candidate AP exists, and the communication terminal 401 Is wirelessly connected to the wireless LAN-AP 101 using the candidate profile. If step S420 described above is executed prior to the above-described profile transmission process, the wireless LAN profile including the changed ESSID is not stored in the candidate profile storage unit 422. Therefore, in this case, step S420 is repeatedly executed until the profile transmission process is completed.

  As described above, the wireless connection destination of the communication terminal 401 is the wireless LAN-AP 101 in the connection state of FIG. 1, and temporarily changes to the wireless LAN-AP 102 when the ESSID is changed in the wireless LAN-AP 101. After the profile transmission process is completed, the wireless LAN-AP 101 is changed again. As described above, the wireless LAN-AP of the wireless connection destination of the communication terminal 401 is lost even when the ESSID of the wireless LAN-AP 101 is changed by executing the profile transmission process and the wireless connection process. Can be suppressed, and a decrease in communication possibility of the communication terminal 401 can be suppressed.

  In the wireless LAN-AP 101 of the first embodiment described above, when the installation state of the wireless LAN-AP 101 changes or when a change is predicted, it is determined that there is a remaining terminal and there is a roaming candidate AP. If the determination is made, the ESSID is changed, so that the remaining terminal can stop reconnecting to the wireless LAN-AP 101 and the wireless LAN-AP 102, which is a roaming candidate AP, can immediately change the wireless connection destination. . For this reason, the fall of the communication possibility of a remaining terminal can be suppressed. In addition, when it is determined that there is no remaining terminal, or when it is determined that there is no roaming candidate AP, since the ESSID is not changed, it is possible to suppress a decrease in communication possibility of the take-out terminal.

  In addition, since it is determined whether or not the installation state of the wireless LAN-AP 101 changes or the change is predicted depending on whether or not the network cable is attached to the port 131, such specification can be performed easily and in a short time. Can be executed.

  Further, when the ESSID of the wireless LAN-AP 101 is changed, the candidate profile including the changed ESSID can be stored in the communication terminal 401 by the profile transmission process. For this reason, in order to establish a wireless connection to the wireless LAN-AP 101 in the taken-out state, the user can omit the work of setting the wireless LAN profile in the communication terminal 401. In addition, since the profile transmission process is started when the wireless LAN-AP 101 and the communication terminal 401 are close to a predetermined distance or less, the user only brings the wireless LAN-AP 101 and the communication terminal 401 close to each other. Thus, the candidate profile including the changed ESSID can be stored in the communication terminal 401. Accordingly, when the user takes out the wireless LAN-AP 101 and the communication terminal 401 together, for example, the user simply performs a simple operation of storing the wireless LAN-AP 101 and the communication terminal 401 in the same bag. Candidate profiles can be stored in the terminal 401. In the profile transmission process, since the wireless LAN profile including the changed ESSID is transmitted by NFC, the wireless LAN profile can be stored only in the communication terminal 401 close to the wireless LAN-AP 101 by the user. . For this reason, it can suppress transmitting the profile for wireless LAN with respect to the communication terminal which is not intended.

  In addition, a list in which MAC addresses of communication terminals that may be taken out in advance are prepared, and the presence / absence of a remaining terminal is determined based on such a list. Can be executed.

B. Second embodiment:
10 and 11 are explanatory diagrams showing a schematic configuration of a network system to which the wireless LAN access point device of the second embodiment is applied. The system configuration of the network system 500a of the second embodiment is the same as that shown in FIGS. 1 and 2 in that a wireless LAN-AP 101a is provided instead of the wireless LAN-AP 101 and a cradle 200 is additionally provided. It is different from the system configuration of the network system 500 of one embodiment. Since the other components of the network system 500a of the second embodiment are the same as the components of the network system 500 of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is given. Is omitted.

  As shown in FIGS. 10 and 11, the wireless LAN-AP 101 a of the second embodiment can be detachably connected to the cradle 200. The wireless LAN-AP 101a and the cradle 200 are connected by a USB (Universal Serial Bus) interface. The wireless LAN-AP 101 a is connected to the wired LAN 11 via the cradle 200 while being connected to the cradle 200.

  FIG. 12 is a block diagram illustrating a detailed configuration of the wireless LAN-AP 101a according to the second embodiment. The wireless LAN-AP 101a of the second embodiment is different from the wireless LAN-AP 101 of the first embodiment shown in FIG. 3 in that the wired LAN communication unit 130 is not provided and the cradle connection interface unit 180 is provided. Different. Since other components of the wireless LAN-AP 101a are the same as those of the wireless LAN-AP 101 of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  The cradle connection interface unit 180 has a function as a USB host controller. When the wireless LAN-AP 101a is connected to the cradle 200, the cradle connection interface unit 180 transmits / receives data to / from the cradle 200 in accordance with the USB standard. In addition, when the wireless LAN-AP 101a is connected to the cradle 200, the cradle connection interface unit 180 transfers power supplied from the cradle 200 to a battery (not shown) included in the wireless LAN-AP 101a. The cradle connection interface unit 180 connects the wireless LAN-AP 101a and the cradle 200 in accordance with a connection detection sequence between devices in the USB standard (for example, connection and detection when either D + or D− is 3.3V). Monitor for the presence or absence of The cradle connection interface unit 180 corresponds to a mounting specifying unit in claims.

  FIG. 13 is a block diagram illustrating a schematic configuration of the cradle 200 according to the second embodiment. The cradle 200 has a function as a stand for mounting the wireless LAN-AP 101a, a function as a device that relays power to the wireless LAN-AP 101a, and a function for connecting the wireless LAN-AP 101a to the wired LAN 11. The cradle 200 includes a wireless LAN-AP connection interface unit 210 and a wired LAN communication unit 220. The wireless LAN-AP connection interface unit 210 and the wired LAN communication unit 220 are connected to each other via an internal bus 230.

  The wireless LAN-AP connection interface unit 210 has a function as a USB device controller. When the wireless LAN-AP 101a is connected to the cradle 200, data is exchanged with the wireless LAN-AP 101a according to the USB standard. Send and receive. The wired LAN communication unit 220 has an interface for connecting to the wired LAN 11 including the port 221. A network cable can be attached to the port 221. The wired LAN communication unit 220 mutually converts the data format in the wired LAN 11 and the data format between the wireless LAN-AP 101a and the cradle 200.

  The ESSID setting process in the second embodiment is different from the ESSID setting process in the first embodiment in the specific procedure of the change presence / absence specifying process (step S105), and other procedures are the same as the ESSID setting process in the first embodiment. It is. The profile transmission process and the wireless connection process in the second embodiment are the same as the profile transmission process and the wireless connection process in the first embodiment.

  FIG. 14 is a flowchart illustrating a procedure of a change presence / absence specifying process according to the second embodiment. The change presence / absence specifying process in the second embodiment differs from the change presence / absence specifying process of the first embodiment shown in FIG. 6 in that step S205a is executed instead of step S205. Since the other procedures of the change presence / absence specifying process in the second embodiment are the same as the procedures of the change presence / absence specifying process in the first embodiment, the same procedures are denoted by the same reference numerals, and detailed description thereof will be given. Omitted.

  As illustrated in FIG. 14, the state change detection unit 114 determines whether the wireless LAN-AP 101a is attached to the cradle 200 based on the monitoring result of the connection between the wireless LAN-AP 101a and the cradle 200 by the cradle connection interface unit 180. It is determined whether or not (step S205a).

  The fact that the wireless LAN-AP 101a is attached to the cradle 200 means that the wireless LAN-AP 101a is in a mounted state. Therefore, when it is determined that the wireless LAN-AP 101a is attached to the cradle 200 (step S205a: YES), the above-described step S210 is executed. That is, it is specified that there is no change in the installation state or no change prediction.

  On the other hand, the fact that the wireless LAN-AP 101a is not attached to the cradle 200 means that the wireless LAN-AP 101a is removed from the cradle 200 and the installation state of the wireless LAN-AP 101a is in the take-out state, or the wireless LAN- This means that the AP 101a is expected to be removed from the cradle 200 and to be taken out. Therefore, when it is determined that the wireless LAN-AP 101a is not attached to the cradle 200 (step S205a: NO), the above-described step S215 is executed. That is, it is specified that there is a change in installation state or a change prediction.

  The wireless LAN-AP 101a of the second embodiment having the above configuration has the same effect as the wireless LAN-AP 101 of the first embodiment.

C. Third embodiment:
FIG. 15 is a block diagram illustrating a detailed configuration of the wireless LAN-AP 101b according to the third embodiment. The network system of the third embodiment differs from the system configuration of the network system 500 of the first embodiment shown in FIGS. 1 and 2 in that the network system of the third embodiment includes a wireless LAN-AP 101b instead of the wireless LAN-AP 101. Is the same as the network system 500 of the first embodiment.

  The wireless LAN-AP 101b according to the third embodiment illustrated in FIG. 15 is different from the wireless LAN-AP 101 according to the first embodiment illustrated in FIG. 3 in that the posture detection sensor 185 is provided. The other components of the wireless LAN-AP 101b of the third embodiment are the same as the components of the wireless LAN-AP 101 of the first embodiment. The detailed explanation is omitted.

  The attitude detection sensor 185 detects the attitude of the wireless LAN-AP 101b. Specifically, the attitude of which surface of the housing surface of the wireless LAN-AP 101b is positioned vertically upward is detected. In addition, the posture detection sensor 185 periodically detects the posture of the wireless LAN-AP 101b, and can detect a change in the posture over time. In the present embodiment, the posture detection sensor 185 is configured by an acceleration sensor. The posture detection sensor 185 corresponds to the sensor in the claims.

  FIG. 16 is a flowchart illustrating a procedure of a change presence / absence specifying process according to the third embodiment. The change presence / absence specifying process in the third embodiment is different from the change presence / absence specifying process of the first embodiment shown in FIG. 6 in that step S205b is executed instead of step S205. Since the other procedures of the change presence / absence specifying process in the second embodiment are the same as the procedures of the change presence / absence specifying process in the first embodiment, the same procedures are denoted by the same reference numerals, and detailed description thereof will be given. Omitted.

  As illustrated in FIG. 16, the state change detection unit 114 determines whether or not there is a change in the posture of the wireless LAN-AP 101b based on the detection result of the posture of the wireless LAN-AP 101b by the posture detection sensor 185 (step S205b). ).

  The change in the attitude of the wireless LAN-AP 101b is presumed that the user grips and lifts the wireless LAN-AP 101b to take out the wireless LAN-AP 101b. Therefore, when it is determined that there is a change in the attitude of the wireless LAN-AP 101b (step S205b: YES), the above-described step S215 is executed. That is, it is specified that there is a change in installation state or a change prediction. On the other hand, when it is determined that there is no change in the attitude of the wireless LAN-AP 101b (step S205b: NO), the above-described step S210 is executed. That is, it is specified that there is no change in the installation state or no change prediction.

  The wireless LAN-AP 101b of the third embodiment having the above configuration has the same effect as the wireless LAN-AP 101 of the first embodiment.

D. Fourth embodiment:
The schematic configuration of the network system of the fourth embodiment is the same as the schematic configuration of the network system 500 of the first embodiment shown in FIGS. 1 and 2. The configuration of the wireless LAN-AP in the fourth embodiment is the same as that of the wireless LAN-AP 101b of the third embodiment shown in FIG. However, the wireless LAN-AP of the fourth embodiment supports so-called multi-SSID, and can be wirelessly connected to a wireless LAN station using a plurality of wireless LAN profiles at the same time. In other words, the wireless LAN-AP of the fourth embodiment can simultaneously set a plurality of BSSIDs (Basic Service Set Identifiers), and can associate different ESSIDs with each BSSID.

  FIG. 17 is a flowchart illustrating a procedure of ESSID setting processing in the fourth embodiment. The ESSID setting process in the fourth embodiment is different from the ESSID setting process in the first embodiment shown in FIG. 5 in that steps S135 to S160 are added and executed. Since the other procedure of the ESSID setting process in the fourth embodiment is the same as the ESSID setting process of the first embodiment, the same procedure is denoted by the same reference numeral, and detailed description thereof is omitted.

  In the ESSID setting process of the fourth embodiment, when the installation state of the wireless LAN-AP changes from the placement state to the take-out state or when a change is predicted, depending on the presence or absence of a roaming candidate AP or the presence or absence of a remaining terminal. The point which changes ESSID is the same as 1st Embodiment. In the ESSID setting process of the fourth embodiment, in addition to the change in the ESSID, a wireless LAN profile including a predetermined ESSID and BSSID is added or deleted according to the direction of the wireless LAN-AP.

  Specifically, when it is determined in step S110 described above that there is no change or no change in the installation state (step S110: NO), the state change detection unit 114 uses the attitude detection sensor 185 to determine the attitude of the wireless LAN-AP. The direction of the wireless LAN-AP is specified based on the detection result (step S135). In the present embodiment, the wireless LAN-AP has an external shape having a front surface and a back surface that are larger than the other surfaces, and either the front surface or the back surface is in contact with a desk or floor, and the other surface. Is arranged so as to face vertically upward. Hereinafter, the direction of the wireless LAN-AP when the front surface is vertically upward is referred to as “front”, and the direction of the wireless LAN-AP when the back surface is vertically upward is referred to as “back”. Therefore, in step S135, “front” or “back” is specified as the direction of the wireless LAN-AP.

  The state change detection unit 114 determines whether or not there is a change in the direction of the wireless LAN-AP based on the direction of the wireless LAN-AP specified in step S135 and the direction specified when the previous step S135 was executed. Is determined (step S140). If it is determined that there is no change in the direction of the wireless LAN-AP (step S140: NO), the process returns to step S105 described above. Therefore, in this case, a change in ESSID and an addition of an ESSID (addition of a wireless LAN profile) to be described later do not occur.

  On the other hand, if it is determined that there is a change in the direction of the wireless LAN-AP (step S140: YES), the state change detection unit 114 determines whether the change in the direction is a change from front to back. Is determined (step S145). If it is determined that the change in orientation is from front to back (step S145: YES), the ESSID setting unit 117 adds a wireless LAN profile including a predetermined ESSID (step S150). In the present embodiment, the wireless LAN profile added in step S150 is stored in the wireless LAN profile storage unit 121 in advance. Further, the first ESSID is a value different from “AAA”, which is the ESSID set in the wireless LAN-AP in the initial state, and is “DDD” in the present embodiment.

  FIG. 18 is an explanatory diagram showing a schematic configuration of a network system 500b to which the wireless LAN-AP in the fourth embodiment is applied. The system configuration of the network system 500b according to the fourth embodiment is different from the system configuration of the network system 500 according to the first embodiment in that a system configuration includes a wireless LAN-AP 101e instead of the wireless LAN-AP 101. Is the same as the network system 500. FIG. 18 shows the configuration of the network system 500b after step S150 is executed.

  As illustrated in FIG. 18, when the orientation of the wireless LAN-AP 101 e is changed from the front to the back by the user, a wireless LAN profile whose ESSID is “DDD” is added to the wireless LAN-AP 101 e. For this reason, when the user selects a profile whose ESSID is set to “DDD” from the candidate profiles stored in the candidate profile storage unit 422 in the communication terminal 401 and starts the wireless connection, The LAN-AP 101e and the communication terminal 401 form a wireless LAN. At this time, since the wireless LAN profile set as the initial value “AAA” as the ESSID remains as it is, the communication terminal 402 can continue to be wirelessly connected to the wireless LAN-AP 101e. Accordingly, a wireless LAN to which only the communication terminal 401 to which a predetermined wireless LAN profile is set can belong can be newly formed by only a simple operation of changing the orientation of the wireless LAN-AP 101e from the front to the back. The communication possibility of the communication terminal 402 that is already wirelessly connected can be suppressed from being reduced.

  Returning to FIG. 17, when it is determined that the change in the orientation of the wireless LAN-AP is not a change from the back to the front (step S145: NO), the state change detection unit 114 indicates that the change in the orientation of the wireless LAN-AP has occurred. It is determined whether or not the change is from the back to the front (step S155). If it is determined that the change in the direction of the wireless LAN-AP is not a change from the back to the front (step S155: NO), the process returns to step S105 described above. Therefore, in this case, a change in ESSID and an addition of ESSID (addition of a wireless LAN profile) do not occur.

  On the other hand, when it is determined that the change in the direction of the wireless LAN-AP is from the back to the front (step S155: YES), the ESSID setting unit 117 adds the first ESSID added in step S150. Delete the wireless LAN profile including (step S160). Therefore, for example, in the connection state of FIG. 18, when the user changes the orientation of the wireless LAN-AP 101e from the back to the front (returns), the wireless LAN in which the ESSID is set to “DDD” in the wireless LAN-AP 101e. Profile is deleted. For this reason, the communication terminal 401 cannot be wirelessly connected. However, in this case, the communication terminal 401 can wirelessly connect to the wireless LAN-AP 101e facing forward using the wireless LAN profile whose ESSID is “AAA”.

  The wireless LAN-AP 101e of the fourth embodiment described above has the same effects as the wireless LAN-AP 101 of the first embodiment and 101b of the third embodiment. In addition, when the orientation of the wireless LAN-AP 101e changes from the front to the back, the wireless LAN profile including the first ESSID is added in the wireless LAN-AP 101e. Therefore, a new wireless LAN to which only the communication terminal 401 for which a predetermined wireless LAN profile is set can belong can be easily formed, and communication with the communication terminal 402 that is already wirelessly connected to the wireless LAN-AP 101e is possible. The decline in sex can be suppressed.

E. Fifth embodiment:
FIG. 19 is a block diagram illustrating a configuration of a wireless LAN access point device according to the fifth embodiment. The wireless LAN access point device 600 is set with a first ESSID.

  The wireless LAN access point device 600 includes a state change detection unit 610, a first device specifying unit 620, a second device specifying unit 630, and an ESSID setting unit 640.

  The state change detection unit 610 detects that the installation state of the wireless LAN access point device has changed or that a change in the installation state is predicted.

  The first device specifying unit 620 is a wireless LAN that requires roaming from the wireless LAN access point device to another wireless LAN access point device in which the first ESSID is set when the installation state of the wireless LAN access point device changes. The presence or absence of the first wireless LAN station device which is a station device is specified.

  Second device specifying section 630 specifies the presence / absence of another wireless LAN access point device in a range where wireless communication is possible.

  The ESSID setting unit 640 sets the ESSID of the wireless LAN access point device. When it is detected that the installation state has changed or the change in the installation state is predicted, the ESSID setting unit 640 determines that there is the first wireless LAN station device, and other wireless When it is specified that there is a LAN access point device, the ESSID set in the wireless LAN access point device is changed from the first ESSID to the second ESSID.

  According to the wireless LAN access point device 600 of the fifth embodiment having the above configuration, it is specified that there is a first wireless LAN station device and that there is another wireless LAN access point device. In other words, there is a wireless LAN station device that requires roaming when the installation state of the wireless LAN access point device 600 changes, and there is another wireless LAN access point device in which the same ESSID is set as the roaming destination. If there is, the ESSID is changed to the second ESSID in the wireless LAN access point device 600. For this reason, when the wireless LAN access point device 600 is taken out, the first wireless LAN station device is stopped from continuously reconnecting to the wireless LAN access point device 600, and other wireless LAN access point devices are connected. The wireless connection destination can be changed immediately. For this reason, it can suppress that the communication possibility of a 1st wireless LAN station apparatus falls.

F. Modification F-1. Modification 1:
In step S205 of the change presence / absence identification process of the first embodiment, whether or not a network cable is attached to the port 131 is detected based on the state of the link (that is, the layer 2 communication path) in the port 131. Instead of the link, detection may be performed by a physical mounting state (that is, a connection state in layer 1).

F-2. Modification 2:
In step S205a of the change presence / absence specifying process of the second embodiment, whether or not the wireless LAN-AP 101a is attached to the cradle 200 is determined based on the USB standard connection detection sequence (for example, either D + or D-). However, the present invention is not limited to this. For example, the cradle 200 may be configured to include a mechanism for locking the wireless LAN-AP 101a when the wireless LAN-AP 101a is mounted and a switch such as a button switch for releasing the lock. In this configuration, when the switch is turned on (that is, when the lock is released), a predetermined signal is input to the GPIO (General Purpose Input / Output) of the CPU 110 of the wireless LAN-AP 101a. When the GPIO receives a predetermined signal in the GPIO, the state change detection unit 114 identifies that there is a change in the installation state or a change prediction, and when no signal is received, the change in the installation state or a change prediction Specify that there is no. Also with such a configuration, it is possible to accurately determine whether or not the wireless LAN-AP 101a is attached to the cradle 200.

F-3. Modification 3:
In the third embodiment, the posture detection sensor 185 is configured by an acceleration sensor, but the present invention is not limited to this. For example, an illuminance sensor may be used instead of the acceleration sensor. In this configuration, an illuminance sensor is arranged on any surface of the housing of the wireless LAN-AP 101b. When the attitude of the wireless LAN-AP 101b changes, the illuminance detected by such a sensor is likely to change. Therefore, in step S205b of the change presence / absence specifying process, it is determined whether there is a change in illuminance. If there is a change in illuminance, it is determined that there is a change or prediction of change in the installation state. It can be determined that there is no change or no change prediction. Similarly, instead of steps S135 and S140 of the ESSID setting process of the fourth embodiment, the presence or absence of a change in illuminance is specified, and it is determined that there is a change in direction when there is a change in illuminance. If there is no change, it can be determined that there is no change in orientation.

  In addition, for example, button switches that are grounded and pressed when in the placed state are arranged in the wireless LAN-APs 101b and 101e, and a signal indicating the pressed state of the button switch is input to the GPIO of the CPU 110. Also good. In this configuration, the state change detection unit 114 determines that there is a change or predicted change in the installation state when the signal input to the GPIO changes, and the change or predicted change in the installation state occurs when the signal does not change. It can be determined that there is not. Similarly, instead of steps S135 and S140 of the ESSID setting process of the fourth embodiment, a change in the signal input to GPIO is specified, and if there is a change in the signal, it is determined that there is a change in direction, When there is no change, it can be determined that there is no change in orientation.

F-4. Modification 4:
The list used when determining the presence or absence of a remaining terminal in step S120 of the ESSID setting process of each embodiment is a list in which MAC addresses of communication terminals that may be taken out are listed. Instead of the list, a list in which MAC addresses of communication terminals that are unlikely to be taken out can be used. Also in this configuration, when any of the MAC addresses listed in the list matches the MAC address of a communication terminal that is currently wirelessly connected, it can be determined that there is a remaining terminal.

F-5. Modification 5:
The list used when determining whether or not there is a remaining terminal in step S120 of the ESSID setting process of each embodiment is described in advance by the administrator of the network system 500 and stored in the MAC address list storage unit 122. The present invention is not limited to this. For example, when the administrator or user takes out a communication terminal together with the wireless LAN-APs 101, 101a, and 101b, the MAC address of the communication terminal may be manually entered into the list and registered. In this configuration, for example, input may be performed using a Web UI (User Interface) provided to the communication terminal from the wireless LAN-APs 101, 101a, and 101b.

  Further, for example, instead of manually inputting the MAC address of a communication terminal that may be taken out by an administrator or a user, a configuration in which it is automatically input may be employed. Specifically, for example, every time a communication terminal is taken out together with the wireless LAN-APs 101, 101a, 101b, 101e, the MAC address of the communication terminal taken out together in the wireless LAN-APs 101, 101a, 101b, 101e is set. Record and specify the MAC address of the communication terminal as the MAC address of the communication terminal that is likely to be taken out when the number of times taken out is a predetermined number of times (for example, once or multiple times) or more. And may be automatically listed. In this configuration, since the list is automatically generated, the input work burden on the administrator or user can be reduced.

F-6. Modification 6:
The list used when determining whether or not there is a remaining terminal in step S120 of the ESSID setting process of each embodiment is stored in the MAC address list storage unit 122, but the present invention is not limited to this. For example, it may be stored in the management device 300, a server device (not shown) on the wired LAN 11, or a server device (not shown) on the Internet INT. In this configuration, when step S120 is executed, the list may be acquired by communicating with a device storing the list. Alternatively, the MAC address of the connected communication terminal is notified to the device storing the list, the presence or absence of the remaining terminal is determined in the device, and the result is transmitted to the wireless LAN-APs 101, 101a, 101b, and 101e. You may be notified.

F-7. Modification 7:
In each embodiment, when the ESSID is changed in the wireless LAN-APs 101, 101a, 101b, and 101e, the wireless LAN profile including the changed ESSID is passed to the communication terminal via NFC. Is not limited to this. For example, it may be passed to the communication terminal via a wireless LAN. However, in this configuration, in the wireless LAN-APs 101, 101a, 101b, and 101e, before changing the ESSID (before step S125), the wireless LAN profile including the ESSID to be changed is transmitted to the communication terminal, and thereafter It is necessary to apply the wireless LAN profile including the changed ESSID. Further, for example, a wireless LAN profile including the changed ESSID can be transferred to the communication terminal using an arbitrary recording medium such as a USB memory. In this configuration, the wireless LAN-AP 101, 101a, 101b, 101e and the communication terminal need to have a reader / writer for such a recording medium.

  Also, for example, by using AOSS (AirStation One-Touch Secure System, AOSS is a registered trademark) or WPS (Wi-Fi Protected Setup), a wireless LAN profile including the changed ESSID is transmitted to the communication terminal. Also good. For example, in a configuration in which a wireless LAN profile is transmitted using AOSS, before changing the ESSID (before step S125) in the wireless LAN-AP 101, 101a, 101b, 101e, the AOSS An instruction to wait for the start of processing is transmitted, and the communication terminal is set in a standby state. Thereafter, in the wireless LAN-APs 101, 101a, 101b, and 101e, AOSS is started after changing the ESSID. Thus, the wireless LAN profile including the changed ESSID can be passed to the communication terminal, and after the AOSS is completed, the communication terminal can perform wireless connection using the received wireless LAN profile. In addition to the application via the NFC or wireless LAN, the wireless LAN profile can be applied via a non-volatile memory, applied via a network cable, Bluetooth (registered trademark), etc. It can also be applied via a wireless PAN (Personal Area Network).

F-8. Modification 8:
In step S120 of the ESSID setting process of each embodiment, the determination of the presence / absence of a remaining terminal is performed using the list stored in the BSSI list storage unit 122, but the present invention is not limited to this. Absent. For example, among communication terminals that are currently wirelessly connected, when there is a communication terminal having a received signal strength of a predetermined threshold or less, it is determined that there is a remaining terminal, and there is no communication terminal having a received signal strength of a predetermined threshold or less It may be specified that there is no remaining terminal. Since a take-out terminal is likely to be placed by a user at a position close to the wireless LAN-AP scheduled to be taken out, there is a high possibility that the received signal strength (RSSI) of the communication terminal is high. On the other hand, since the remaining terminal is likely to be located farther than the remaining terminal with respect to the wireless LAN-AP scheduled to be taken out, the RSSI of the communication terminal is likely to be low. For this reason, also with the above-mentioned structure, the presence or absence of the remaining terminal can be determined with high accuracy.

F-9. Modification 9:
In step S420 of the wireless connection process of each embodiment, whether or not there is a wireless LAN-AP that can be connected using the candidate profile is determined by analyzing the received beacon. It is not limited to this. For example, when wireless connection is attempted using the candidate profiles stored in the candidate profile storage unit 422 in order and wireless connection is established, it may be determined that there is a connectable wireless LAN-AP. In this configuration, step S425 (connecting to the wireless LAN-AP using the corresponding candidate profile) can be omitted. In this configuration, it is preferable to attempt a wireless connection using the candidate profile acquired via NFC preferentially. By doing so, the take-out terminal can make a wireless connection with the taken-out wireless LAN-AP in a shorter time, and the communication possibility of the take-out terminal can be further suppressed. In this configuration, it is preferable to store information indicating the priority order in association with each candidate profile. Further, as described in the above modification, it is preferable to set a higher priority for the wireless LAN profile passed using the recording medium and the wireless LAN profile passed using AOSS or WPS. .

F-10. Modification 10:
The configuration of the network system in each embodiment is merely an example, and various modifications can be made. For example, although the operation mode as the wireless LAN access point can be switched in the wireless LAN-APs 101, 101a, 101b, and 101e, the switching may not be possible. Further, for example, the operation mode may be fixed in the Fat-AP mode in the wireless LAN-APs 101, 101a, 101b, and 101e. Similarly, in the other wireless LAN-APs 102 and 103, the operation mode may be fixed in the Fat-AP mode. In this configuration, the management apparatus 300 can be omitted. In the second embodiment, the cradle 200 has a function as a stand for mounting the wireless LAN-AP 101a, a function as a device that relays power to the wireless LAN-AP 101a, and the wireless LAN-AP 101a to the wired LAN 11. Although a function for connection is provided, any of these functions may be omitted. For example, the cradle 200 may be an apparatus having only a function as a stand for mounting the wireless LAN-AP 101a. Also in this configuration, by detecting whether the wireless LAN-AP 101a is attached to or detached from the cradle 200, it is possible to determine whether the installation state of the wireless LAN-AP 101a is changed or whether a change is predicted. Further, for example, each of the communication terminals 401 to 403 is configured by a multi-function telephone terminal, but is configured by an arbitrary device that can operate as a wireless LAN station, such as a notebook personal computer or a tablet personal computer. May be. Further, for example, the network systems 500, 500a, and 500b of the embodiments are connected to the Internet INT, but may not be connected to the Internet INT. In this configuration, the router device 104 may be omitted. The router device 104 and the wireless LAN-APs 102 and 103 may have a wireless LAN controller function in the management device 300. In this configuration, the management apparatus 300 can be omitted. Further, the number of each component in the network system 500, 500a, 500b may be an arbitrary number. For example, the wireless LAN-AP may be only one wireless LAN-AP 101.

F-11. Modification 11:
In each embodiment and modification, a part of the configuration realized by hardware may be replaced with software, and conversely, a part of the configuration realized by software may be replaced with hardware. Also good. In addition, when part or all of the functions of the present invention are realized by software, the software (computer program) can be provided in a form stored in a computer-readable recording medium. In the present invention, the “computer-readable recording medium” is not limited to a portable recording medium such as a flexible disk or a CD-ROM, but an internal storage device in a computer such as various RAMs and ROMs, a hard disk, etc. It also includes an external storage device fixed to the computer. That is, the “computer-readable recording medium” has a broad meaning including an arbitrary recording medium in which data can be fixed instead of temporarily.

  The present invention is not limited to the above-described embodiments and modifications, and can be realized with various configurations without departing from the spirit thereof. For example, the technical features in the embodiments and the modifications corresponding to the technical features in each embodiment described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

11 ... Wired LAN
101, 101a, 101b, 101e ... Wireless LAN access point device (wireless LAN-AP)
102 ... Wireless LAN access point device (wireless LAN-AP)
103 ... Wireless LAN access point device (wireless LAN-AP)
104 ... Router device 105 ... Mobile communication network 110 ... CPU
DESCRIPTION OF SYMBOLS 111 ... 1st AP function part 112 ... 2nd AP function part 113 ... Operation mode switching part 114 ... State change detection part 115 ... 1st apparatus specific part 116 ... 2nd apparatus specific part 117 ... ESSID setting part 118 ... Profile transmission part 119 ... Identification information acquisition unit 120... Flash ROM
121 ... Wireless LAN profile storage unit 122 ... MAC address list storage unit 125 ... RAM
DESCRIPTION OF SYMBOLS 130 ... Wired LAN communication part 131 ... Port 132 ... Wearing state detection part 140 ... Wireless LAN communication part 150 ... Mobile communication part 160 ... Proximity wireless communication part 170 ... Reader / writer for NFC tag 171 ... NFC tag 180 ... Cradle connection interface part 185 ... Attitude detection sensor 190 ... Internal bus 200 ... Cradle 210 ... Wireless LAN-AP connection interface unit 220 ... Wired LAN communication unit 221 ... Port 230 ... Internal bus 300 ... Management device 401 ... Communication terminal 402 ... Communication terminal 403 ... Communication terminal 410 ... CPU
411 ... Call control unit 412 ... User interface control unit 413 ... Candidate profile receiving unit 420 ... Flash ROM
421 ... Wireless LAN profile storage unit 422 ... Candidate profile storage unit 440 ... Wireless LAN communication unit 450 ... Mobile communication unit 460 ... Proximity wireless communication unit 470 ... Display unit 490 ... Internal bus 500, 500a, 500b ... Network system 600 ... Wireless LAN access point device 610 ... State change detection unit 620 ... First device specifying unit 630 ... Second device specifying unit 640 ... ESSID setting unit INT ... Internet

Claims (9)

A wireless LAN access point device in which a first ESSID (Extended Service Set Identifier) is set,
A state change detection unit that detects that the installation state of the wireless LAN access point device has changed or that a change in the installation state is predicted;
A wireless LAN station device that requires roaming from the wireless LAN access point device to another wireless LAN access point device in which the first ESSID is set when the installation state of the wireless LAN access point device changes. A first device specifying unit for specifying the presence or absence of one wireless LAN station device;
A second device specifying unit for specifying presence / absence of the other wireless LAN access point device in a wireless communicable range;
An ESSID setting unit that sets an ESSID of the wireless LAN access point device, and detects that the installation state has changed or that a change in the installation state is predicted. When it is specified that there is a station device and when it is specified that there is another wireless LAN access point device, the ESSID set in the wireless LAN access point device is changed from the first ESSID to the second An ESSID setting unit for changing to an ESSID of
A wireless LAN access point device. The wireless LAN access point device according to claim 1,
The ESSID setting unit, when it is detected that the installation state has changed, or a change in the installation state is predicted, and when it is specified that the first wireless LAN station device is not present, or A wireless LAN access point device that does not change an ESSID set in the wireless LAN access point device as the first ESSID when it is specified that there is no other wireless LAN access point device. The wireless LAN access point device according to claim 1 or 2, further comprising:
A port to which a network cable for wired LAN can be attached; and
A cable attachment detection unit for detecting the attachment state of the network cable in the port;
With
The cable attachment detection unit detects a change in the installation state or a change in the installation state is predicted based on a change in the attachment state of the network cable at the port. . In the wireless LAN access point device according to any one of claims 1 to 3,
The wireless LAN access point device can be attached to a cradle,
The wireless LAN access point device further includes a cradle attachment detection unit that detects the attachment state of the wireless LAN access point device to the cradle,
The cradle attachment detection unit detects that the installation state has changed or a change in the installation state is predicted based on a change in presence / absence of attachment of the wireless LAN access point device to the cradle. Wireless LAN access point device. The wireless LAN access point device according to any one of claims 1 to 4, further comprising:
A sensor for detecting a change in posture of the wireless LAN access point device;
The state change detection unit is a wireless LAN access point device that detects that the installation state has changed or that a change in the installation state is predicted based on the change in posture detected by the sensor. The wireless LAN access point device according to any one of claims 1 to 5, further comprising:
A second wireless LAN station device different from the first wireless LAN station device when the ESSID set in the wireless LAN access point device is changed from the first ESSID to the second ESSID. A wireless LAN access point device comprising an ESSID transmission unit that transmits the second ESSID to a wireless LAN station device. The wireless LAN access point device according to claim 6, further comprising:
Providing a proximity wireless communication unit for performing proximity wireless communication,
The ESSID transmission unit is a wireless LAN access point device that transmits the second ESSID by the proximity wireless communication. The wireless LAN access point device according to any one of claims 1 to 7, further comprising:
An identification information storage unit that stores identification information of a second wireless LAN station apparatus that is a wireless LAN station apparatus different from the first wireless LAN station apparatus, or identification information of the first wireless LAN station apparatus;
An identification information acquisition unit that acquires identification information of the wireless LAN station device based on a wireless signal output from the wireless LAN station device;
With
The first device specifying unit compares the identification information stored in the identification information storage unit with the identification information acquired by the identification information acquisition unit, whereby the first wireless LAN station device A wireless LAN access point device that identifies the presence or absence of A method for setting an ESSID (Extended Service Set Identifier) in a wireless LAN access point device,
In the wireless LAN access point device, a first ESSID is set in advance,
The method
(A) detecting that an installation state of the wireless LAN access point device has changed or that a change in the installation state is predicted;
(B) A wireless LAN station device that requires roaming from the wireless LAN access point device to another wireless LAN access point device in which the first ESSID is set when the installation state of the wireless LAN access point device changes Identifying the presence or absence of the first wireless LAN station device,
(C) identifying the presence or absence of the other wireless LAN access point device in a wireless communicable range;
(D) When it is detected that the installation state has changed or the change in the installation state is predicted, the first wireless LAN station device is identified, and the other Changing the ESSID set in the wireless LAN access point device from the first ESSID to the second ESSID when it is specified that there is a wireless LAN access point device;
A method comprising:

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