JP6276013B2 - Access point apparatus, access point selection system and selection method thereof - Google Patents

Description

  The present invention relates to a technique for selecting an installation position of an access point device in a wireless LAN system or the like.

  The spread of wireless local area networks (abbreviated as Local Area Network, LAN) has increased, and the environment in which radio waves are crowded has increased. In such an environment, selection of an appropriate installation position of an access point device in wireless communication such as a wireless LAN system is important in order not to deteriorate communication quality. Patent Document 1 discloses a technique for notifying a user of an installation position of a user terminal that enables good communication when the user terminal attempts to perform wireless communication with an access point device.

  According to Patent Literature 1, the position of a user terminal is set in a plurality of stages with respect to an access point device, and trial communication is performed at each set position to measure communication quality. Furthermore, an appropriate installation position of the user terminal can be selected by outputting a communication quality evaluation result to the user terminal in association with the position of the user terminal based on each measurement result.

JP 2000-286776 A

  However, the technique of Patent Document 1 has the following problems. That is, the access point device has to be provided with an additional function for generating communication quality measurement data for measuring communication quality. Further, the user terminal needs to be provided with additional functions such as a communication quality measurement function for measuring communication quality and a communication quality evaluation result output function for outputting measurement results. Therefore, an arbitrary user terminal that does not have the additional function cannot be wirelessly connected to the access point apparatus.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an access that allows a user to select an installation position of an access point device that performs a good wireless connection with an arbitrary terminal device. It is to realize a point device, an access point selection system, and a selection method thereof.

  An access point device according to the present invention is an access point device to which a terminal device is wirelessly connected, a counting means for measuring a response time based on a process in which the terminal device wirelessly connects to the access point device, A recording means for recording the first response time at the first position and the first position information, and comparing the first response time with the second response time at the second position. And when the second response time is shorter than the first response time, the first response time and the first position information recorded in the recording means are used as the second response time and the second response time. And an access point device that is updated with the second position information.

  An access point selection system according to the present invention includes an access point device and a terminal device that is wirelessly connected to the access point device, and the access point device performs the process of wirelessly connecting the terminal device to the access point device. Counting means for measuring a response time based on, a recording means for recording the first response time at the first position of the access point device and the first position information, and the first response time; When the second response time is compared with the second response time at a second position, and the second response time is shorter than the first response time, the first response time recorded in the recording means An access point selection system comprising: control means for updating the first position information with the second response time and the second position information.

  The access point selection method according to the present invention measures a response time based on a process in which a terminal device wirelessly connects to an access point device, the first response time at the first position of the access point device and the first When the first response time is compared with the second response time at the second position, and the second response time is shorter than the first response time. The access point selection method updates the first response time and the first location information with the second response time and the second location information.

  ADVANTAGE OF THE INVENTION According to this invention, the access point apparatus, access point selection system, and its selection method which a user can select the installation position of the access point apparatus which performs favorable radio | wireless connection with arbitrary terminal devices are implement | achieved. .

It is a block diagram which shows the structure of the access point apparatus and access point selection system of the 1st Embodiment of this invention. It is a figure explaining the response time of the access point search system of the 1st Embodiment of this invention. It is a flowchart which shows the access point selection method of the 1st Embodiment of this invention. It is a flowchart which shows the measurement of the response time of the access point selection method of the 1st Embodiment of this invention. It is a flowchart which shows the access point selection method of the 1st Embodiment of this invention. It is a flowchart which shows operation | movement of the access point selection system of the 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the preferred embodiments described below are technically preferable for carrying out the present invention, but the scope of the invention is not limited to the following.
(First embodiment)
(Description of configuration)
FIG. 1 is a block diagram showing a configuration of an access point device and an access point selection system according to an embodiment of the present invention. In the present embodiment, a case where the present invention is applied to a communication system using a wireless LAN will be described. The access point selection system 10 of the present embodiment includes an access point device 20 and a terminal device 30 that perform communication using a wireless LAN. The access point device 20 is connected to a wired communication transmission path 40 that performs communication with an external network. The terminal device 30 is a device such as a personal computer or a printer operated by a user.

  The access point device 20 has the following units. The search switch 21 is a switch that starts an operation of searching for an access point that is an installation position with good communication quality with the terminal device 30. The notification unit 22 notifies the user of communication quality information using a light emitting diode (abbreviated as “Light Emitting Diode”, LED) or voice. The control unit 23 controls each part of the access point device 20 and evaluates communication connection and communication quality between the access point device 20 and the terminal device 30. The communication unit 24 performs wired communication with the wired communication transmission path 40 and wireless communication with the terminal device 30. The recording unit 25 includes a memory that records position information and communication quality information. The count unit 26 measures a response time, which will be described later.

  The terminal device 30 includes a control unit 31 that controls the operation of the communication unit 32 and a communication unit 32 that performs wireless communication with the access point device 20.

  In addition to the above, there are components necessary for performing operations as an access point device and a terminal device, but only the components necessary for describing the embodiment of the present invention are shown here. Illustration and description of other components are omitted.

  The access point selection system 10 determines the communication quality based on the length of the response time shown in FIG. FIG. 2 is a diagram for explaining the response time evaluated by the access point selection system 10.

  According to FIG. 2, the access point is obtained by turning on the search switch 21 in a state where the terminal device 30 belongs to the access point device 20, that is, in a state where the terminal device 30 is connected to the access point device 20 and can perform wireless communication. The operation to select is started.

  When the search switch 21 is turned on, first, the control unit 23 of the access point device 20 transmits a notification of deauthentication from the communication unit 24 to the terminal device 30. When the communication unit 32 of the terminal device 30 receives the authentication cancellation notification, the control unit 31 cancels the attribution to the access point device 20. When the attribution is released, the control unit 31 of the terminal device 30 starts an operation for connecting again.

  The operation for the terminal device 30 to connect to the access point device 20 is also performed when the power of the terminal device 30 is switched from OFF to ON. Therefore, similarly to the case where the search switch 21 is turned on while the terminal device 30 belongs to the access point device 20, the search switch 21 is turned on when the power of the terminal device 30 is switched from OFF to ON and the membership is not established. The operation of selecting an access point can also be started by turning ON.

  The terminal device 30 sequentially transmits a probe request, an authentication request, and a connection request to the access point device 20 in order to connect to the access point device 20. When the access point device 20 sequentially receives these requests, the probe response, the positive response, and the connection response are sequentially transmitted to the terminal device 30 as shown in FIG. When the terminal device 30 receives the connection response, the terminal device 30 transmits a final acknowledgment to the access point device 20. When the access point device 20 receives this final acknowledgment, the operation for connection is completed. The above is a connection process in a normal wireless LAN system.

  At this time, the access point device 20 measures the response time until the connection response is transmitted and the final acknowledgment is received, and this response time is made to correspond to the communication quality. That is, it is determined that the shorter the response time, the better the communication quality. The response time can be measured by a timer provided in the count unit 26.

  When the response time is measured, when the previous response time is not recorded in the recording unit 25, that is, when the measurement of the current response time is the first measurement, the response time and the current response time are recorded in the recording unit 25. And the position information of the access point device 20 corresponding to the. Next, the position of the access point device 20 is changed, and the response time at the changed position is measured.

  When the previous response time is recorded in the recording unit 25, the current response time is compared with the previous response time. When the current response time is shorter than the previous response time, the LED serving as the notification unit 22 Is lit to notify the user that the current position is more suitable. Further, the recording unit 25 updates the previous response time and position information with the current response time and the corresponding position information of the access point device 20.

  When the current response time is equal to or longer than the previous response time, the LED serving as the notification unit 22 is turned off. Further, the recording unit 25 does not update the previous response time and position information in the current response time and the corresponding position information.

  The response time measurement can be repeated by changing the position of the access point device 20 until the user ends the operation of searching for an access point by turning off the search switch 21. When the response time measurement is completed, the position where the response time is the shortest corresponds to the position where the best communication can be performed within the measured range. That is, this position can be selected as the installation position of the access point device 20, that is, the access point.

In addition, while repeating the response time measurement, the user can confirm the access point by marking with a tape or the like at the position where the LED was last lit, that is, the position with the best communication state. it can.
(Description of operation)
FIG. 3 is a flowchart showing an access point selection method by the access point device 20 and the access point selection system 10 of the present embodiment. The access point selection method will be described with reference to FIG.

  In a state where the terminal device 30 belongs to the access point device 20, the user turns on the search switch 21 and starts searching for the installation position of the access point device 20, that is, the access point.

  In step S <b> 101, the control unit 23 of the access point apparatus 20 measures the response time described with reference to FIG. 2 at the current position of the access point apparatus 20. A flowchart of response time measurement will be described later. When the response time measurement ends, the process proceeds to step S102.

  In step S102, the control unit 23 checks whether or not the previous response time and the corresponding position information exist in the recording unit 25. If it exists (YES), the process proceeds to step S103. If it does not exist (NO), the process proceeds to step S105.

  In step S103, the control unit 23 checks whether or not the response time measured this time is shorter than the previous response time existing in the recording unit 25. If it is shorter (YES), the process proceeds to step S104. If not shorter (NO), the process proceeds to step S106.

  In step S104, the control unit 23 turns on the LED serving as the notification unit 22 to thereby notify the user that the position measured this time is a position where the communication quality is improved from the previously measured position and suitable communication can be performed. Notification is made, and the process proceeds to step S105.

  In step S <b> 105, the control unit 23 causes the recording unit 25 to update the previous response time and position information recording with the current response time and the corresponding position information of the access point device 20. If this time is the first measurement (NO in step S102), the current response time and the corresponding position information are recorded in the recording unit 25.

  In step S106, the control unit 23 turns off the LED serving as the notification unit 22 because the current response time is equal to or longer than the previous response time.

  In step S107, the control unit 23 checks whether the search switch 21 is OFF. The search switch 21 can be turned off at any time by the user. When the search switch 21 is turned OFF, OFF is confirmed in step S107. If it is OFF (YES), the process ends. If not OFF (NO), the process returns to step S101. At this time, the user changes the position of the access point device 20. When returning to step S101, the above operation is repeated.

  Until the user turns off the search switch 21, the position of the access point device 20 can be changed and the operation of the flowchart of FIG. 3 can be repeated. At the stage where the flowchart of FIG. 3 is completed, the position where the response time is the shortest is the position where the best communication can be performed in the measured range. That is, this position can be selected as an access point.

  Next, the response time measurement in step S101 will be described. FIG. 4 is a flowchart showing the response time measurement operation. It is assumed that the operation of searching for an access point is started and response time measurement is started when the user turns ON the search switch 21 in a state where the terminal device 30 belongs to the access point device 20.

  In step S <b> 201, the control unit 23 transmits an authentication cancellation notification from the communication unit 24 to the terminal device 30. When the communication unit 32 of the terminal device 30 receives the authentication cancellation notification, the control unit 31 cancels the attribution of the terminal device 30 to the access point device 20, and the connection between the access point device 20 and the terminal device 30 is released. . When the connection is released, the control unit 31 of the terminal device 30 starts an operation for reconnection. Then, the control unit 31 transmits a probe request to the access point device 20 via the communication unit 24.

  In step S <b> 202, the control unit 23 checks whether a probe request from the terminal device 30 has been received. If received (YES), the process proceeds to step S203. If not received (NO), the confirmation in step S202 is repeated.

  In step S203, the control unit 23 transmits a probe response to the terminal device 30 via the communication unit 24, and proceeds to step S204. When the terminal device 30 receives the probe response, the terminal device 30 transmits an authentication request to the access point device 20.

  In step S <b> 204, the control unit 23 confirms whether an authentication request from the terminal device 30 has been received. If received (YES), the process proceeds to step S205. If not received (NO), the confirmation in step S204 is repeated.

  In step S205, the control unit 23 transmits an authentication response to the terminal device 30 via the communication unit 24, and proceeds to step S206. When the terminal device 30 receives the authentication response, the terminal device 30 transmits a connection request to the access point device 20.

  In step S <b> 206, the control unit 23 confirms whether or not a connection request from the terminal device 30 has been received. If received (YES), the process proceeds to step S207. If not received (NO), the confirmation in step S206 is repeated.

  In step S207, the control unit 23 transmits a connection response to the terminal device 30 via the communication unit 24, and proceeds to step S208.

  In step S208, in response to the execution of step S207, the control unit 23 starts time counting for measuring the response time by the counting unit 26, and proceeds to step S209.

  In step S209, the control unit 23 confirms whether or not an affirmative response from the terminal device 30 has been received. That is, when the terminal device 30 receives a connection response from the access point device 20, the control unit 31 transmits an affirmative response to the access point device 20. In step S209, the control unit 23 confirms whether or not this acknowledgment has been received. If received (YES), the process proceeds to step S210. If not received (NO), the confirmation in step S209 is repeated.

  In step S210, the control unit 23 ends the time counting for measuring the response time in the counting unit 26, determines the response time, and ends.

  The above is the flowchart of the response time measurement in step S102. In this embodiment, the response time is associated with the communication quality. That is, it is evaluated that the communication quality is higher as the response time is shorter. Authentication cancellation, probe request and response, authentication request and acknowledgment, connection request and response, and acknowledgment transmitted and received in the operation flowchart of this embodiment are transmission and reception performed in the wireless connection process in the wireless LAN system. This embodiment is characterized in that the response time associated with the communication quality is evaluated by using these transmission and reception. That is, the access point device 20 and the terminal device 30 need to add an additional function such as sending a special signal for evaluating the communication quality or providing a special evaluation function for evaluating the communication quality. do not do.

  According to the present embodiment, an access point device, an access point selection system, and a selection method thereof that enable a user to select an installation position of an access point device that performs good wireless connection with an arbitrary terminal device are realized. To do.

  In this embodiment, when there are variations in the response speed measurement results, the average value of the results of a plurality of measurements can be used as the response speed.

  In addition to the response speed measurement, a fixed-length signal is transmitted from the access point device 20 to the terminal device 30, and the terminal device 30 receives this signal and sends back to the access point device 20 that it has received it. A series of transmission / reception processes in which 20 receives a reply may be performed, and the number of times that the transmission / reception process is performed per unit time may be counted and associated with communication quality.

  Further, the operation of the LED of the notification unit 22 is not limited to the operation of whether or not lighting is performed, but the types of lighting can be diversified. For example, when the response time is shorter than the previous time, blue display, when the same as the previous time, yellow display, when longer than the previous time, red display, etc. Moreover, the notification part 22 can also be notified auditorily with the sound by a speaker etc. besides visually notifying a user with LED etc. FIG.

  The access point search system 10 of the present embodiment can be applied to a case where there are a plurality of terminal devices 30. FIG. 5 is a flowchart showing an access point selection method when there are a plurality of terminal devices 30. An access point selection method when there are a plurality of terminal devices 30 will be described with reference to FIG.

  In a state where a plurality of terminal devices 30 belong to the access point device 20, the user turns on the search switch 21 and starts selecting the installation position of the access point device 20, that is, the access point.

  In step S <b> 301, the control unit 23 of the access point device 20 measures each response time with the plurality of terminal devices 30 at the current position of the access point device 20. That is, the control unit 23 performs the response time measurement according to the flowchart of FIG. When the response time measurement is completed, the process proceeds to step S302.

  In step S <b> 302, the control unit 23 confirms whether or not the response time measurement with all the terminal devices 30 has been completed. When completion is confirmed (YES), the process proceeds to step S303. When completion is not confirmed (NO), step S301 is repeated.

  In step S303, the control unit 23 calculates an average value of the measured response times, and proceeds to step S304.

  In step S304, it is confirmed whether or not the average value of the previous response time and the position information of the access point device 20 corresponding thereto exist in the recording unit 25. If it exists (YES), the process proceeds to step S305. If it does not exist (NO), the process proceeds to step S307.

  In step S305, it is confirmed whether or not the average value of the response times measured this time is shorter than the average value of the previous response times existing in the recording unit 25. If it is shorter (YES), the process proceeds to step S306. If not shorter (NO), the process proceeds to step S308.

  In step S306, the LED serving as the notification unit 22 is turned on to notify the user that the position measured this time is a position where the communication quality is improved from the previously measured position and a suitable communication can be performed. Proceed to

  In step S307, the recording unit 25 updates the previous average response time value and the record of the position information with the average value of the current response time and the position information of the access point device 20 corresponding thereto. If this is the first measurement (NO in step S304), the recording unit 25 records the average value of the current response time and the corresponding position information.

  In step S308, since the average value of the current response time is equal to or longer than the average value of the previous response time, the LED serving as the notification unit 22 is turned off.

  In step S309, it is confirmed whether the search switch 21 is OFF. If it is OFF (YES), the process ends. If not OFF (NO), the process returns to step S301. At this time, the user changes the position of the access point device 20. When returning to step S301, the above operation is repeated.

  Until the user turns off the search switch 21, the position of the access point device 20 can be changed and the operation of the flowchart of FIG. 5 can be repeated. When the flowchart of FIG. 5 is completed, the position where the average response time is the shortest is the position where the best communication can be performed in the measured range. That is, this position can be used as an access point.

According to the present embodiment, an access point device, an access point selection system, and a selection method thereof that enable a user to select an installation position of an access point device that performs good wireless connection with an arbitrary terminal device are realized. To do.
(Second Embodiment)
Even if the search switch 21 is not turned ON by the user, the access point selection system 10 of this embodiment measures the response time after the elapse of a predetermined setting period, and the current installation position of the access point device 20 is determined. It is possible to confirm whether or not the communication quality is deteriorated as compared with the initial installation.

  FIG. 6 shows a flowchart of the operation of the access point selection system according to the second embodiment of this invention. The access point device and the access point selection system of this embodiment have the configurations of the access point device 20 and the access point selection system 10 shown in FIG. The flowchart of FIG. 6 can be started by setting the access point device 20 so as to shift to a mode for automatically confirming communication quality at the installation position after the access point device 20 is installed. it can.

  In step S401, it is confirmed whether or not a set time set in advance in the count unit 26 of the access point device 20 has elapsed. The set time can be a time from when the access point selection is executed and completed, but is not limited thereto. For example, after the access point device 20 is installed, the time from when the mode for automatically confirming the communication quality at the installation position is set may be used. If the set time has elapsed (YES), the process proceeds to step S402. If it has not elapsed (NO), step S401 is repeated.

  In step S <b> 402, the control unit 23 of the access point apparatus 20 measures response time at the current position of the access point apparatus 20. The response time can be measured by the flowchart of FIG. When the response time measurement ends, the process proceeds to step S403.

  In step S403, the response time measured this time is compared with the response time recorded in the recording unit 25 when the access point device 20 is initially installed. When the response time measured this time is longer than the recorded response time (YES), the process proceeds to step S404. If not long (NO), the process proceeds to step S405.

  In step S404, the LED serving as the notification unit 22 is turned on to notify the user that the communication quality of this time is lower than the communication quality at the time of initial installation, and the process ends.

  In step S405, since the current communication quality is not deteriorated with respect to the communication quality at the time of initial installation, the LED serving as the notification unit 22 is turned off, and the process ends.

  By the operation according to the above flowchart, it is possible to confirm whether or not the current installation position of the access point device 20 is deteriorated in communication quality as compared with the time of initial installation. The operation according to the flowchart of FIG. 6 can be set not only to be automatically started, but also can be manually started by the user as appropriate.

  The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the invention described in the claims, and it is also included within the scope of the present invention. Not too long. Moreover, although a part or all of said embodiment can be described also as the following additional remarks, it is not restricted to the following.

Appendix (Appendix 1)
In the access point device to which the terminal device is wirelessly connected,
Counting means for measuring response time based on a process of wireless connection of the terminal device to the access point device;
Recording means for recording the first response time at the first position of the access point device and the first position information;
Performing a comparison between the first response time and the second response time at a second location;
When the second response time is shorter than the first response time, the first response time and the first position information recorded in the recording means are used as the second response time and the second response time. Control means for updating with the position information of
Access point device with
(Appendix 2)
The access point device according to appendix 1, wherein a notification is made when the second response time is shorter than the first response time.
(Appendix 3)
The access point device according to appendix 1, wherein a notification is made when the second response time is longer than the first response time.
(Appendix 4)
4. The access point device according to one of appendices 1 to 3, wherein the position with the shortest response time is the installation position.
(Appendix 5)
The counting means releases the wireless connection in a state where the terminal device is wirelessly connected to the access point device, and measures a response time based on a process in which the terminal device reconnects to the access point device. 5. The access point device according to one of items 1 to 4.
(Appendix 6)
The access point device according to claim 1, wherein the notification is performed visually or audibly.
(Appendix 7)
The access point device according to one of appendices 1 to 6, wherein an average value obtained by repeating the measurement of the response time a plurality of times is used as the response time.
(Appendix 8)
8. The terminal device according to any one of appendices 1 to 7, wherein there are a plurality of the terminal devices, the response time is measured for each terminal device, and an average value of the response times for each terminal device is the response time. Access point device.
(Appendix 9)
An access point device, and a terminal device wirelessly connected to the access point device,
The access point device is
Counting means for measuring response time based on a process of wireless connection of the terminal device to the access point device;
Recording means for recording the first response time at the first position of the access point device and the first position information;
Performing a comparison between the first response time and the second response time at a second location;
When the second response time is shorter than the first response time, the first response time and the first position information recorded in the recording means are used as the second response time and the second response time. Control means for updating with the position information of
Access point selection system.
(Appendix 10)
The access point selection system according to appendix 9, wherein notification is performed when the second response time is shorter than the first response time.
(Appendix 11)
The access point selection system according to appendix 9, wherein notification is performed when the second response time is longer than the first response time.
(Appendix 12)
12. The access point selection system according to claim 9, wherein the position with the shortest response time is the installation position.
(Appendix 13)
The counting means releases the wireless connection in a state where the terminal device is wirelessly connected to the access point device, and measures a response time based on a process in which the terminal device reconnects to the access point device. 13. The access point selection system according to one of items 12 to 12.
(Appendix 14)
14. The access point selection system according to one of appendices 9 to 13, wherein the notification is made visually or audibly.
(Appendix 15)
15. The access point selection system according to one of appendices 9 to 14, wherein an average value obtained by repeating the measurement of the response time a plurality of times is used as the response time.
(Appendix 16)
16. The terminal device according to any one of appendices 9 to 15, wherein there are a plurality of the terminal devices, the response time is measured for each terminal device, and an average value of the response times for each terminal device is the response time. Access point selection system.
(Appendix 17)
Measure the response time based on the process of wireless connection of the terminal device to the access point device,
Recording the first response time and the first location information at a first location of the access point device;
Performing a comparison between the first response time and the second response time at a second location;
When the second response time is shorter than the first response time, the first response time and the first position information are updated with the second response time and the second position information. ,
Access point selection method.
(Appendix 18)
The access point selection method according to appendix 17, wherein notification is performed when the second response time is shorter than the first response time.
(Appendix 19)
The access point selection method according to appendix 17, wherein notification is performed when the second response time is longer than the first response time.
(Appendix 20)
20. The access point selection method according to one of appendices 17 to 19, wherein the position with the shortest response time is set as the installation position.
(Appendix 21)
The measurement of the response time is performed based on a process of releasing the wireless connection in a state where the terminal device is wirelessly connected to the access point device, and reconnecting the terminal device to the access point device. The access point selection method according to item 1.
(Appendix 22)
The access point selection method according to any one of appendices 17 to 21, wherein the notification is performed visually or audibly.
(Supplementary note 23) The access point selection method according to one of supplementary notes 17 to 22, wherein an average value obtained by repeating the measurement of the response time a plurality of times is used as the response time.
(Additional remark 24) Additional remark The said terminal device is multiple units, The said response time is measured for every said terminal device, The average value of the said response time for every said terminal device is made into the said response time. The access point selection method according to 1 above.

DESCRIPTION OF SYMBOLS 10 Access point selection system 20 Access point apparatus 21 Search switch 22 Notification part 23 Control part 24 Communication part 25 Recording part 26 Count part 30 Terminal device 31 Control part 32 Communication part 40 Wired communication transmission line

Claims (10)

In the access point device to which the terminal device is wirelessly connected,
Counting means for measuring response time based on a process of wireless connection of the terminal device to the access point device;
Recording means for recording the first response time at the first position of the access point device and the first position information;
Performing a comparison between the first response time and the second response time at a second location;
When the second response time is shorter than the first response time, the first response time and the first position information recorded in the recording means are used as the second response time and the second response time. Control means for updating with the position information of
Access point device with The access point apparatus according to claim 1, wherein notification is performed when the second response time is shorter than the first response time. The access point device according to claim 1, wherein notification is performed when the second response time is longer than the first response time. The access point device according to claim 1, wherein the position with the shortest response time is set as an installation position. The access point device according to claim 1, wherein an average value obtained by repeating the response time measurement a plurality of times is set as the response time. 6. The device according to claim 1, wherein there are a plurality of the terminal devices, the response time is measured for each terminal device, and an average value of the response times for each terminal device is set as the response time. Access point device. An access point device, and a terminal device wirelessly connected to the access point device,
The access point device is
Counting means for measuring response time based on a process of wireless connection of the terminal device to the access point device;
Recording means for recording the first response time at the first position of the access point device and the first position information;
Performing a comparison between the first response time and the second response time at a second location;
When the second response time is shorter than the first response time, the first response time and the first position information recorded in the recording means are used as the second response time and the second response time. Control means for updating with the position information of
Access point selection system. The access point selection system according to claim 7, wherein the position with the shortest response time is set as an installation position. The access point device to which the terminal device is wirelessly connected
The terminal device to the access point device performs measurement of the radio response time based on the process of connecting,
Recording the first response time and the first location information at a first location of the access point device;
Performing a comparison between the first response time and the second response time at a second location;
When the second response time is shorter than the first response time, the first response time and the first position information are updated with the second response time and the second position information. ,
Access point selection method. The access point selection method according to claim 9, wherein the access point device sets the position with the shortest response time as an installation position.

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