JP6384250B2 - Wireless LAN access point system - Google Patents

Description

  The present invention relates to a wireless LAN access point used for construction of a wireless LAN, and more particularly to a technique for improving a wireless LAN environment of a wireless terminal accessing the wireless LAN access point.

  With the development of network technology, companies connect production equipment installed on each floor of a factory to a LAN in the factory so that the production quantity can be transmitted from the production equipment to the host system.

  When connecting a production device to a factory LAN, if the production device and the factory LAN are connected by a network cable, the network cable connecting the production device and the factory LAN may be disconnected by a forklift or operator who carries the product. Therefore, a wireless LAN access point (hereinafter referred to as “wireless AP”. Wireless AP is an abbreviation for “Wireless LAN Access Point”) is installed on each floor of the factory, and the production apparatus and the factory LAN are connected by the wireless LAN. Is increasing.

  By connecting the production device and the factory LAN with a wireless LAN, there is no need to worry about disconnection of the network cable. However, if the wireless LAN environment of the wireless terminal (for example, a personal computer) connected to the production device is bad, the production device Since the wireless terminal connected to the wireless terminal cannot perform stable data communication with the wireless AP, the wireless AP is installed in a place where the wireless LAN environment of the wireless terminal is good.

  However, since various objects and people move within the factory floor, the wireless LAN environment of the wireless terminal connected to the production apparatus changes with time, and depending on the situation within the factory floor, the wireless LAN of the wireless terminal The environment temporarily deteriorated, and stable communication between the wireless AP and the wireless terminal may not be possible. In addition, when a new wireless terminal is newly added, it may be difficult to find the location of the wireless AP where the wireless LAN environment is good for both the new wireless terminal and the existing wireless terminal.

  As a technique for improving the wireless LAN environment of the wireless terminal, as described in paragraph 0015 of Patent Document 1, it is conceivable to adjust the radio wave output of the wireless AP according to the radio wave intensity obtained from the radio wave of the wireless terminal. The upper limit value of the radio AP radio output is stipulated by the Radio Law, and when the radio AP radio output is adjusted, the radio AP radio output may exceed the upper limit stipulated by the Radio Law.

JP 2010-233069 A

  Therefore, the present invention provides a system capable of improving the wireless LAN environment of the wireless terminal without adjusting the radio wave output of the wireless AP when the wireless LAN environment of the wireless terminal connected to the production apparatus deteriorates. The purpose is to provide.

  The present invention that solves the above-described problems includes at least one wireless LAN access point that establishes a wireless LAN, at least one wireless terminal that accesses the wireless LAN access point, and a server that is connected to the wireless LAN access point. A wireless LAN access point system comprising at least

  When the wireless terminal according to the present invention receives a beacon signal from the wireless LAN access point and a terminal position detection unit that detects the three-dimensional position of the wireless terminal, a response corresponding to the beacon signal is sent to the wireless LAN access point. A terminal control unit configured to transmit the three-dimensional position of the wireless terminal detected by using the terminal position detection unit to the wireless LAN access point when transmitting and receiving a transmission request of the three-dimensional position from the wireless LAN access point .

  The wireless LAN access point according to the present invention includes an access point position detection unit that detects a three-dimensional position of the wireless LAN access point, and a three-dimensional movement that is a mechanism for moving in a three-dimensional space in an arbitrary direction. When a mechanism unit, a radio wave intensity measuring unit that measures the radio wave intensity of the radio wave received from the wireless terminal, a beacon signal is periodically transmitted, and a response of the beacon signal is received from the wireless terminal, the radio wave intensity measuring unit When there is the wireless terminal having the radio field intensity obtained and the radio field intensity is less than a specified value, a request for transmitting location information is sent to all the wireless terminals that transmitted beacon signal responses, and the wireless terminal When the position information is received, the access point position detection unit is used to detect the three-dimensional position of the wireless LAN access point and to respond to the beacon signal. Is notified to the server of a destination calculation request including the three-dimensional positions and electric field strengths of all the wireless terminals that have transmitted and the three-dimensional positions of the wireless LAN access points, and the destination three-dimensional positions are received from the server. And an access point control unit that controls the three-dimensional movement mechanism unit so that the position of the wireless LAN access point moves to the three-dimensional position of the destination received from the server by using the access point position detection unit. . It is preferable that the three-dimensional movement mechanism unit that is a mechanism for moving in a three-dimensional space in an arbitrary direction is realized by a multicopter.

  Further, when the destination calculation request is notified from the wireless LAN access point, the server according to the present invention receives the three-dimensional position and radio wave intensity of the wireless terminal included in the destination calculation request and the wireless LAN access point. From the three-dimensional position, a three-dimensional position where all the radio field intensity of the wireless terminal when the wireless LAN access point is moved is within the allowable range of the radio field intensity is calculated as a three-dimensional position of the destination, and a destination calculation request is issued A destination calculation unit that transmits the three-dimensional position of the destination to the notified wireless LAN access point;

  According to the present invention described above, when the wireless LAN environment where the wireless terminal is installed deteriorates for some reason, and the radio field intensity of the wireless terminal measured by the wireless LAN access point becomes less than a specified value, the wireless terminal and Each wireless LAN access point detects a three-dimensional position, and the server calculates a position where the radio field intensity of the wireless terminal is within the allowable range of the radio field intensity as the three-dimensional position of the movement destination of the wireless LAN access point. Since the wireless LAN access point according to the present invention can move in any direction in the three-dimensional space, it can move to the three-dimensional position of the destination calculated by the server, and the wireless LAN access point moves to the three-dimensional position of the destination. Thus, the wireless LAN environment in a place where the wireless LAN environment has deteriorated can be improved.

The figure explaining the structure of a wireless LAN access point system. The block diagram which shows the function of a wireless LAN access point system. The figure explaining the structure of wireless AP. The figure explaining a series of procedures performed with a wireless LAN access point system. FIG. 1 is a diagram illustrating an operation example of a wireless LAN access point system. FIG. 2 illustrates an operation example of a wireless LAN access point system.

  From here, preferred embodiments of the present invention will be described. The following description is not intended to limit the scope of the present invention, but is provided to aid understanding.

  FIG. 1 is a diagram illustrating a configuration of a wireless LAN access point system 1 according to the present embodiment, and FIG. 2 is a block diagram illustrating functions of the wireless LAN access point system 1 according to the present embodiment.

  In the wireless LAN access point system 1 according to the present embodiment, when the wireless LAN environment of the wireless terminal 3 deteriorates for some reason, the wireless AP 2 automatically moves in a direction in which the wireless LAN environment is improved. This is a system developed so as to improve the wireless LAN environment 3.

  As shown in FIG. 1, the wireless LAN access point system 1 according to this embodiment includes a wireless AP 2 that constructs a wireless LAN 5a, a plurality of wireless terminals 3 that access the wireless AP 2 using the wireless LAN 5a, and a wired LAN 5b. The wireless AP 2 is mounted on the multicopter so that the wireless AP 2 can move in any direction in the three-dimensional space in FIG. .

  Commercially available multicopters are powered by electric power, and power is supplied from a battery attached to the multicopter. However, if the power is supplied from the battery, there is a limit to the multicopter's operating time. Therefore, in this embodiment, as shown in FIG. 1, an automatic take-up reel 6 for automatically winding a power cable and a wired LAN cable is installed on the ceiling of the floor 7, and the distribution line 5c is connected to the wireless AP 2 by the power cable. It is comprised so that electric power may be supplied from. It should be noted that the torque of the automatic take-up reel 6 is preferably adjusted in advance to such an extent that a power cable or the like in a state where no tension is applied can be automatically taken up.

  In FIG. 1, the wireless AP 2 is connected to the server 4 via the wired LAN 5b. However, a wireless AP for relaying the radio wave of the wireless AP 2 and connecting to the server 4 via the wired LAN 5b is provided, and the WDS ( The wireless AP 2 and the relay wireless AP may communicate with each other using a WDS (Wireless Distribution System).

  A wireless AP 2 constituting the wireless LAN access point system 1 according to the present embodiment is a computer device that constructs a wireless LAN 5a that communicates using radio waves and relays communication between the wireless LAN 5a and the wired LAN 5b. This is an apparatus in which functions necessary for the present invention are added to an access point or a wireless LAN router.

  As shown in FIG. 2, the wireless AP 2 of this embodiment includes an access point control unit 20, a wireless communication unit 21, a radio wave intensity measurement unit 22, a wired communication unit 23, an access point position detection unit 24, and a three-dimensional movement mechanism unit. The wireless AP 2 is connected to the server 4 via the wired LAN 5b and is connected to the wireless terminal 3 via the wireless LAN 5a.

  FIG. 3 is a diagram for explaining the structure of the wireless AP 2. As illustrated in FIG. 3, the wireless AP 2 according to the present embodiment includes an access point control unit 20, a wireless communication unit 21, and a radio wave intensity measurement under a multicopter mechanism 2 a that is a three-dimensional movement mechanism unit 25 of the wireless AP 2. The electric circuit 2b that functions as the unit 22, the wired communication unit 23, and the access point position detection unit 24 is mounted. Multicopter means a device that is configured to float in the air by rotating multiple rotors, and to move in the horizontal and vertical directions by controlling the number of rotations of each rotor. .

  There is a reason why the wireless AP 2 can move in any direction in the three-dimensional space. As shown in FIG. 1, in the floor 7, a mezzanine floor is often provided by a gantry 7a, and a blind spot related to the wireless LAN 5a is generated by the gantry 7a. Therefore, in this embodiment, one axis direction or two axes The wireless AP 2 can be moved in any direction in the three-dimensional space so that the degree of freedom related to the movement of the wireless AP 2 is higher than the direction.

  Another reason is that a multicopter is adopted as a mechanism that can move in any direction in a three-dimensional space. As a mechanism that can move in any direction in the three-dimensional space, it is possible to adopt an overhead crane mechanism instead of a multicopter, but if an overhead crane mechanism is used, a rail or the like is installed on the ceiling of the existing floor 7 This requires a major modification of the floor 7. On the other hand, if a multicopter is used as a mechanism that can move in an arbitrary direction in a three-dimensional space, it is only necessary to install the automatic take-up reel 6 on the ceiling of the floor 7, and no significant modification of the floor 7 is required. .

  The wireless communication unit 21 of the wireless AP 2 is a function provided in the wireless AP 2 so that wireless data communication can be performed. The wireless communication unit 21 of the wireless AP 2 includes an antenna and a circuit that modulates data to be transmitted to the wireless terminal 3 into radio waves. , A transmission / reception circuit including a circuit for demodulating radio waves received from the wireless terminal 3. The wired communication unit 23 of the wireless AP 2 is a function provided in the wireless AP 2 so that wired network communication can be performed. The wired communication unit 23 of the wireless AP 2 uses the physical network interface and data to be transmitted to the wired LAN 5b as electrical signals. It is a transmission / reception circuit composed of a circuit for modulating and a circuit for demodulating an electric signal received via the wired LAN 5b.

  The radio wave intensity measuring unit 22 of the wireless AP 2 is a function provided in the wireless AP 2 so that the wireless LAN environment of the wireless terminal 3 can be grasped, and the radio wave received from the wireless terminal 3 from the voltage induced in the antenna of the wireless communication unit 21. Measure the radio field intensity.

  The access point position detection unit 24 of the wireless AP 2 is a function provided in the wireless AP 2 in order to detect the three-dimensional position of the wireless AP 2 on the floor 7. As a specific method for detecting the three-dimensional position of the wireless AP 2, the wireless AP 2 is provided with a three-dimensional gyro sensor, and the movement distances in the three-axis directions are respectively calculated from the accelerations output from the three-dimensional gyro sensor. The three-dimensional position of the wireless AP 2 with the set origin as a reference may be obtained.

  The access point control unit 20 of the wireless AP 2 is a function provided in the wireless AP 2 in order to control the wireless AP 2. Specifically, the access point control unit 20 of the wireless AP 2 is a CPU, and performs a predetermined operation in accordance with a computer program installed in the wireless AP 2. When the access point control unit 20 of the wireless AP 2 according to the present embodiment periodically transmits a beacon signal and receives a beacon signal response from the wireless terminal 3, the access point control unit 20 acquires the radio field intensity from the radio field intensity measurement unit 22. Next, when there is a wireless terminal 3 whose radio field intensity is less than the specified value, the access point control unit 20 of the wireless AP 2 notifies the position transmission request to all the wireless terminals 3 that transmitted the beacon signal response, and the wireless terminal 3 3, after receiving the three-dimensional position of the wireless terminal 3, the access point position detection unit 24 is used to detect the three-dimensional position of the wireless AP 2. Next, the access point control unit 20 of the wireless AP 2 notifies the server 4 of a destination calculation request including the three-dimensional positions and electric field strengths of all the wireless terminals 3 that have transmitted beacon signal responses and the three-dimensional positions of the wireless AP 2. When the destination 3D position is received from the server 4, the access point position detector 24 is used to move the position of the wireless AP 2 to the destination 3D position received from the server 4. The operation | movement which controls the part 25 is performed. The beacon signal is a signal used for scanning of the wireless terminal 3, and the details of the beacon signal are standardized by IEEE 802.11.

  In this embodiment, the floor 7 on which the wireless AP 2 is installed has a floating obstacle such as a forklift or an operator for carrying a load in addition to a fixed obstacle such as a gantry 7a that forms a mezzanine floor. Therefore, a sensor (for example, an ultrasonic sensor) for detecting an obstacle is provided in the wireless AP 2 so that the access point control unit 20 of the wireless AP 2 does not interfere with the obstacle based on the output of the sensor. It is desirable to be able to control the movement of the wireless AP2.

  The wireless terminal 3 constituting the wireless LAN access point system 1 according to the present embodiment is a device connected to a production device installed in a factory, and is applied to a commercially available device such as a personal computer with a built-in wireless LAN interface. A device with the necessary functions added. The wireless terminal 3 is connected to the wireless AP 2 via the wireless LAN 5a, and includes a terminal control unit 30, a wireless communication unit 31, and a terminal position detection unit 32 as illustrated in FIG.

  The wireless communication unit 31 of the wireless terminal 3 is a function provided for connecting to the wireless AP 2. The wireless communication unit 31 of the wireless terminal 3 includes an antenna, a circuit that modulates data to be transmitted to the wireless terminal 3, and a wireless It is a transmission / reception circuit configured by a circuit that demodulates radio waves received from the terminal 3.

  The terminal position detection unit 32 of the wireless terminal 3 is a function provided in the wireless terminal 3 in order to detect the three-dimensional position of the wireless terminal 3. As a specific method for detecting the three-dimensional position of the wireless terminal 3, as with the wireless AP 2, the wireless terminal 3 is provided with a three-dimensional gyro sensor, and the movement distance in the three-axis direction from the acceleration output by the three-dimensional gyro sensor. And the three-dimensional position of the wireless terminal 3 with respect to the origin set on the floor 7 may be obtained.

  The terminal control unit 30 of the wireless terminal 3 is a function provided in the wireless terminal 3 in order to control the wireless terminal 3. Specifically, the terminal control unit 30 of the wireless terminal 3 is a CPU, and performs a predetermined operation in accordance with a computer program installed in the wireless terminal 3. In this embodiment, when receiving a beacon signal from the wireless AP 2, the terminal control unit 30 of the wireless terminal 3 transmits a response corresponding to the beacon signal to the wireless AP 2 and receives a position transmission request from the wireless AP 2. The operation of transmitting the three-dimensional position of the wireless terminal 3 detected using the unit 32 to the wireless AP 2 is performed.

  The server 4 constituting the wireless LAN access point system 1 according to the present embodiment is an apparatus provided for calculating the three-dimensional position of the movement destination of the wireless AP 2, and is a computer program necessary for the present invention in the commercially available server 4. It becomes a device that is mounted. The server 4 is connected to the wireless AP 2 via the wired LAN 5b, and the server 4 includes a destination calculation unit 40 as illustrated in FIG.

  The destination calculation unit 40 of the server 4 is a function provided for calculating the three-dimensional position of the destination of the wireless AP 2. Specifically, the destination calculation unit 40 of the server 4 is a CPU, and performs a predetermined operation in accordance with a computer program installed in the server 4. In the present embodiment, when the movement destination calculation unit 40 of the server 4 is notified of the movement destination calculation request from the wireless AP 2, the three-dimensional position and the radio wave intensity of the wireless terminal 3 included in the movement destination calculation request and the wireless AP 2 3 From the three-dimensional position, the three-dimensional position where the radio field intensity of the wireless terminal 3 when the wireless AP 2 is moved is within the allowable range is calculated as the three-dimensional position of the destination, and the destination of the destination is calculated to the wireless AP 2 that has notified the destination calculation request. Send 3D position.

  The closer the distance between the wireless terminal 3 and the wireless AP 2 is, the better the wireless LAN environment of the wireless terminal 3 is. Therefore, the destination calculation unit 40 of the server 4 wirelessly transmits to the wireless terminal 3 whose radio field intensity is less than the specified value. The three-dimensional position of the wireless AP 2 is calculated so as to bring the AP 2 closer.

  From here, a series of procedures executed in the wireless LAN access point system 1 of the present embodiment will be described. FIG. 4 is a diagram for explaining a series of procedures executed in the wireless LAN access point system 1 of the present embodiment.

  The access point control unit 20 of the wireless AP 2 uses the wireless communication unit 21 of the wireless AP 2 to transmit a beacon signal periodically (for example, every 90 milliseconds) (S1) and receive the beacon signal. Transmits a response of the beacon signal (S2). When receiving the response of the beacon signal from the wireless terminal 3, the access point control unit 20 of the wireless AP 2 acquires the radio field intensity when the response of the beacon signal is received from the radio field intensity measuring unit 22 (S3). When there are a plurality of wireless terminals 3 in the wireless LAN 5a, the wireless AP 2 receives beacon signal responses from the plurality of wireless terminals 3.

  Next, the access point control unit 20 of the wireless AP 2 checks whether there is a wireless terminal 3 whose radio field intensity is less than the specified value (S4). If there is no wireless terminal 3 whose radio field intensity is less than the specified value, the wireless LAN environment is It is determined that there is no deteriorated wireless terminal 3, and this procedure ends.

  When there is a wireless terminal 3 whose radio field intensity is less than the specified value, the access point control unit 20 of the wireless AP 2 notifies the position transmission request to all the wireless terminals 3 that have transmitted the beacon signal response (S5). The terminal control unit 30 of the wireless terminal 3 that has received the transmission request operates the terminal position detection unit 32 of the wireless terminal 3 to acquire the three-dimensional position of the wireless terminal 3 (S6), and the wireless communication unit of the wireless terminal 3 is activated. Utilizing this, the three-dimensional position of the wireless terminal 3 is transmitted to the wireless AP 2 (S7).

  Next, when the access point control unit 20 of the wireless AP 2 receives the three-dimensional positions of the wireless terminals 3 from all the wireless terminals 3 that have transmitted beacon signal responses (S8), the access point position detection unit 24 is activated. The three-dimensional position of the wireless AP 2 is acquired (S9).

  Next, the access point control unit 20 of the wireless AP 2 notifies the server 4 of a destination calculation request including the three-dimensional positions and electric field strengths of all the wireless terminals 3 that have transmitted beacon signal responses and the three-dimensional positions of the wireless AP 2. (S10).

  When the movement destination calculation request is notified from the wireless AP 2, the movement destination calculation unit 40 of the server 4 wirelessly calculates from the three-dimensional position and radio wave intensity of the wireless terminal 3 and the three-dimensional position of the wireless AP 2 included in the movement destination calculation request. A three-dimensional position where all the radio field strengths of the wireless communication terminal when the AP 2 is moved is within an allowable range is calculated as a three-dimensional position of the movement destination (S11), and the movement destination 3 is determined to the wireless AP 2 that has notified the movement destination calculation request. The dimension position is transmitted (S12).

  Since the loss of radio waves is inversely proportional to the square of the distance, the distance between the wireless terminal 3 and the wireless AP 2 is obtained from the three-dimensional position of the wireless terminal 3 and the wireless AP 2 included in the movement destination calculation request. Obtaining the radio field intensity of the wireless terminal 3 after moving the wireless AP 2 from the ratio of the distance between the wireless terminal 3 and the wireless AP 2 after the movement and the radio field intensity of the wireless terminal 3 included in the destination calculation request it can.

  When the access point control unit 20 of the wireless AP 2 receives the three-dimensional position of the movement destination from the server 4, the access point position detection unit 24 of the wireless AP 2 is used to transmit the three-dimensional position of the wireless AP 2 from the server 4. The three-dimensional movement mechanism unit 25 is controlled so as to move to the three-dimensional position of the movement destination (S13), and this procedure ends.

  From here, the operation of the above-described wireless LAN access point system 1 will be described while showing a specific example in which the wireless LAN environment where the wireless terminal 3 is installed deteriorates.

  FIG. 5 is a first diagram illustrating the operation of the wireless LAN access point system 1. FIG. 5 shows the operation when the wireless terminal 3a is added at a position away from the existing wireless terminal 3, and the wireless LAN 5a is not shown. Before the wireless terminal 3a is added, the wireless AP 2 exists in the vicinity of the existing wireless terminal 3. Therefore, the wireless AP 2 exists in a position away from the added wireless terminal 3a. The LAN environment is worse than that of the existing wireless terminal 3. When the radio field intensity received from the added wireless terminal 3a is less than the specified value, the wireless AP 2 notifies the server 4 of a destination calculation request, and the destination calculation unit 40 of the server 4 transmits the wireless LAN of the added wireless terminal 3a. The three-dimensional position of the movement destination is calculated so that the environment is improved, and the wireless AP 2 moves to the three-dimensional position of the movement destination calculated by the server 4. In FIG. 5, the wireless AP 2 moves so as to be close to the added wireless terminal 3a.

  FIG. 6 is a second diagram for explaining the operation of the wireless LAN access point system 1. FIG. 6 shows the operation when a forklift appears in the floor 7, and the wireless LAN 5a is not shown. When the forklift 7b travels on the floor surface between the wireless terminal 3 and the wireless AP 2, the wireless LAN environment of the wireless terminal 3 deteriorates. When the radio field intensity received from the wireless terminal 3 is less than the specified value, the wireless AP 2 notifies the server 4 of a movement destination calculation request, and the movement destination calculation unit 40 of the server 4 improves the wireless LAN environment of the wireless terminal 3. In this way, the three-dimensional position of the movement destination is calculated, and the wireless AP 2 moves to the three-dimensional position of the movement destination calculated by the server 4. In FIG. 6, the wireless AP 2 is moving closer to the wireless terminal 3.

  As described above, according to the wireless LAN access point system 1 according to the present embodiment, when the wireless terminal 3 is added to the floor 7, the wireless terminal 3 having a bad wireless LAN environment is included in the wireless terminals 3 installed on the floor 7. If so, the wireless AP 2 automatically moves so that the wireless LAN environment of the wireless terminal 3 is improved. Therefore, the wireless LAN environment of the wireless terminal 3 can be improved without adjusting the radio wave output of the wireless AP 2.

1 Wireless LAN access point system 2 Wireless LAN access point (wireless AP)
DESCRIPTION OF SYMBOLS 20 Access point control part 21 Wireless communication part 22 Radio field intensity measurement part 23 Wired communication part 24 Access point position detection part 25 3D movement mechanism part 3 Wireless terminal 30 Terminal control part 31 Wireless communication part 32 Terminal position detection part 4 Server 40 Movement Point calculator 5a Wireless LAN
5b Wired LAN
6 Automatic take-up reel 7 Floor

Claims (2)

Connecting at least one wireless LAN access point for constructing a wireless LAN, at least one wireless terminal accessing the wireless LAN access point using a wireless LAN, and connecting to the wireless LAN access point using a wired LAN; A wireless LAN access point system composed of at least a server,
When the wireless terminal receives a beacon signal from the wireless LAN access point and a terminal position detection unit that detects a three-dimensional position of the wireless terminal, the wireless terminal transmits a response corresponding to the beacon signal to the wireless LAN access point, A terminal control unit that transmits a three-dimensional position of the wireless terminal detected using the terminal position detection unit to the wireless LAN access point when a transmission request for the three-dimensional position is received from a wireless LAN access point; The points received from the wireless terminal, an access point position detection unit that detects the three-dimensional position of the wireless LAN access point, a three-dimensional movement mechanism unit that is a mechanism for moving in a three-dimensional space in an arbitrary direction, and A radio wave intensity measurement unit that measures the radio wave intensity of the radio wave, periodically transmits a beacon signal, When a beacon signal response is received from a line terminal, the radio field intensity is acquired from the radio field intensity measurement unit, and if there is the radio terminal having a radio field intensity less than a specified value, all the radio terminals that transmitted the beacon signal response When a location information transmission request is notified and the location information of the wireless terminal is received from the wireless terminal, the access point location detection unit is used to detect the three-dimensional location of the wireless LAN access point, and to respond to a beacon signal Notifying the server of a destination calculation request including the three-dimensional positions and electric field strengths of all of the transmitted wireless terminals and the three-dimensional positions of the wireless LAN access points, and receiving the destination three-dimensional positions from the server, Using the access point position detector, the location of the wireless LAN access point is the three-dimensional position of the destination received from the server. An access point control unit for controlling the three-dimensional moving mechanism to move,
When the movement destination calculation request is notified from the wireless LAN access point, the server calculates the three-dimensional position and radio wave intensity of the wireless terminal and the three-dimensional position of the wireless LAN access point included in the movement destination calculation request from the wireless LAN access point. The wireless LAN access that has calculated the three-dimensional position of the movement destination as a three-dimensional position of the movement destination, and has notified the movement destination calculation request, that the whole radio wave intensity of the wireless terminal when the wireless LAN access point is moved is within the allowable range of the radio wave intensity A destination calculation unit that transmits the three-dimensional position of the destination to the point,
A wireless LAN access point system. The wireless LAN access point system according to claim 1, wherein the three-dimensional movement mechanism unit of the wireless LAN access point is realized by a multicopter.

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