JP2017049893A - Information providing server, access point, information providing system, information providing method, information sharing method, information providing program and information sharing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information providing server, an access point, an information providing system, an information providing method, an information sharing method, an information providing program and an information sharing program capable of allowing a user to provide a piece of information relevant to an abnormal status to user terminals even under a state in which the user terminal cannot access to a network due to influences of the abnormal status.SOLUTION: A disaster information server 2 in an information providing system 1 includes: an access point identification section 28 that identifies a near access point as an access point which is installed in a second area located near a first area as an area where an abnormal status has occurred; a sharing information acquisition section 26 that acquires a piece of sharing information to be shared by the users relevant to the abnormal status in the first area and the second area; and a providing information generation section 23 that generates a piece of providing information to be provided to the user terminals by the access point based on the sharing information acquired by the sharing information acquisition section 26.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an information providing server, an access point, an information providing system, an information providing method, an information sharing method, an information providing program, and an information sharing program.

  A wireless LAN service such as a Wi-Fi (registered trademark) service is a service for connecting a user terminal such as a mobile phone having a wireless communication function to the Internet using the wireless communication. An access point is a device for providing a wireless LAN service, and is installed in a store, a public facility, a home, or the like. The access point provides a service for connecting to the Internet via a host server such as a proxy server to the user terminal.

  In addition, there is a service that can acquire information for responding to an abnormal situation such as information on the vicinity of the user's current location at the user terminal via the Internet when an abnormal situation such as a disaster occurs. However, these services are based on the premise that the user terminal can be connected to the Internet. And it is also conceivable that the user terminal becomes unable to connect to the Internet due to a cause such as a physical disconnection due to an abnormal situation such as a disaster. In a state where the user terminal cannot be connected to the network due to the influence of such an abnormal situation, the user terminal cannot acquire information regarding the abnormal situation.

JP 2014-192891 A JP 2003-258702 A

  In view of the above circumstances, the present invention provides an information providing server and an access point that allow a user to provide information related to an abnormal situation to the user terminal in a state where the user terminal cannot be connected to the network due to the influence of the abnormal situation. An object is to provide an information providing system, an information providing method, an information sharing method, an information providing program, and an information sharing program.

  One aspect of the present invention is a first communication unit that communicates with an access point that provides a wireless communication service to a plurality of user terminals via a network, and location information that is information about a location where the access point is installed And an area specifying unit for specifying a first area that is an area where an abnormal situation has occurred, based on the location information of the access point that has become unable to communicate via the first communication unit, An access point identifying unit that identifies a peripheral access point that is an access point installed in a second region around the first region identified by the region identifying unit based on the location information, the first region, and the first region The shared information acquisition unit that acquires the shared information, which is the information that the user should share regarding the abnormal situation in two regions, and the shared information acquisition unit Based on the shared information, a provision information generating unit that generates provision information provided to the user terminal by the access point, and the peripheral access point specified by the access point specifying unit via the first communication unit And a first transmission unit that transmits the provision information generated by the provision information generation unit.

  One aspect of the present invention is the information providing server described above, wherein the access point is set to an operation mode in which access from the user terminal is received without authentication of the user to the peripheral access point specified by the access point specifying unit. An operation mode instruction unit for instructing the change is further provided.

  One aspect of the present invention is the information providing server described above, wherein the first communication unit receives the request for the provided information from the peripheral access point whose operation mode has been changed according to an instruction from the operation mode instruction unit. The first transmission unit transmits the provision information to the peripheral access point in response to the request for the provision information received by the first communication unit.

  One aspect of the present invention is a first operation mode in which wireless communication is performed using a communication method for authenticating a plurality of user terminals and users, or wireless communication is performed using a communication method without authentication between the user terminals and the user. A second communication unit that operates in two operation modes, a function that generates provision information provided to the user terminal including information that a user should share regarding an abnormal situation via a network, and the first operation mode A third communication unit that communicates with a server having a function of instructing a change to the second operation mode; and the third communication unit issues an instruction to change from the first operation mode to the second operation mode from the server. When received, an operation mode control unit that changes the operation mode of the second communication unit from the first operation mode to the second operation mode, and a change to the second operation mode by the operation mode control unit. Next, the user terminal obtains the provision information acquired by the provision information acquisition unit via the provision information acquisition unit that acquires the provision information from the server and the second communication unit that operates in the second operation mode. A second transmission unit for transmitting to the access point.

  One aspect of the present invention is an information providing system comprising an access point that provides a wireless communication service to a plurality of user terminals, and an information providing server that communicates with the access point via a network. The server includes a first communication unit that communicates with the access point via the network, an acquisition unit that acquires position information that is information related to a position where the access point is installed, and the access that cannot be communicated. Based on the position information of the points, an area specifying unit that specifies a first area that is an area where an abnormal situation has occurred, and an access installed in a second area around the first area that is specified by the area specifying unit An access point specifying unit that specifies a peripheral access point that is a point based on the location information; A shared information acquisition unit that acquires shared information that is information to be shared by the user in the second region regarding the abnormal situation, and the access point is based on the shared information acquired by the shared information acquisition unit. A provision information generation unit that generates provision information to be provided to the terminal, and the provision information generated by the provision information generation unit is transmitted to the peripheral access point specified by the access point specification unit via the first communication unit. A first transmission unit, wherein the access point is a second communication unit that performs wireless communication with the user terminal, a third communication unit that communicates with the information providing server via the network, and A receiving unit that receives the provision information from the information providing server via three communication units; and the provision information received by the receiving unit via the second communication unit. A second transmission unit that transmits to the terminal, the information providing system comprising a.

  One aspect of the present invention is an information providing method using an information providing server that communicates with an access point that provides a wireless communication service to a plurality of user terminals via a network, wherein the access point is installed An acquisition step of acquiring location information that is information relating to a location; a region specifying step of specifying a first region that is a region where an abnormal situation has occurred, based on the location information of the access point that has become unable to communicate; and An access point specifying step of specifying a peripheral access point, which is an access point installed in a second region around the first region specified in the region specifying step, based on the position information; the first region and the second region; Shared information for users to acquire shared information that is information that should be shared by users in the region Obtaining step, providing information generating step for generating providing information provided by the access point to the user terminal based on the shared information acquired in the shared information acquiring step, and the surroundings specified in the access point specifying step A transmission step of transmitting the provision information generated in the provision information generation step to an access point.

  One aspect of the present invention is the information providing method described above, wherein the peripheral access point identified in the access point identifying step is changed to an operation mode in which access from the user terminal is accepted without user authentication. An operation mode instruction step for instructing

  One aspect of the present invention is the information providing method described above, wherein the receiving step receives the request for the providing information from the peripheral access point whose operation mode has been changed according to the instruction in the operation mode instruction step, and the reception A transmission step of transmitting the provision information to the peripheral access point in response to the provision information request received in the step.

  One aspect of the present invention is capable of communicating with a server that generates provision information provided to a user terminal including information that the user should share regarding an abnormal situation via a network. An information sharing method using an access point that operates in a first operation mode in which wireless communication is performed using a communication method for performing authentication or a second operation mode in which wireless communication is performed using a communication method without authentication between the user terminal and the user. An operation mode control step for changing from the first operation mode to the second operation mode when an instruction to change from the first operation mode to the second operation mode is received from the server; In response to the change to the second operation mode by the control step, the provision information acquisition step of acquiring the provision information from the server, and the operation in the second operation mode A transmission step of transmitting the provided information acquired in said providing information acquiring step to the user terminal that via the second communication unit, the information sharing method having.

  One aspect of the present invention is an information providing program executed by an information providing server that communicates with an access point that provides a wireless communication service to a plurality of user terminals via a network, and the access point is installed An acquisition step of acquiring location information that is information relating to a location, a region specifying step of specifying a first region that is a region where an abnormal situation has occurred, based on the location information of the access point that has become unable to communicate; An access point specifying step of specifying a peripheral access point, which is an access point installed in a second region around the first region specified in the region specifying step, based on the location information; the first region and the first region; Acquire shared information that is information that users should share about the abnormal situation in two regions A shared information acquisition step, a provided information generation step for generating provided information provided by the access point to the user terminal based on the shared information acquired in the shared information acquisition step, and an identification in the access point specifying step An information provision program for causing a computer to execute the transmission step of transmitting the provision information generated in the provision information generation step to the peripheral access point.

  One aspect of the present invention is the information providing program as described above, wherein the peripheral access point specified in the access point specifying step is changed to an operation mode in which access from the user terminal is accepted without user authentication. An operation mode instruction step for instructing

  One aspect of the present invention is the above-described information providing program, wherein the receiving step receives the provision information request from the peripheral access point whose operation mode has been changed according to the instruction in the operation mode instruction step, and the reception A transmission step of transmitting the provision information to the peripheral access point in response to the provision information request received in the step.

  One aspect of the present invention is capable of communicating with a server that generates provision information provided to a user terminal including information that the user should share regarding an abnormal situation via a network. An information sharing program that is executed in an access point that operates in a first operation mode in which wireless communication is performed in a communication method for performing authentication or a second operation mode in which wireless communication is performed in a communication method without authentication of the user terminal and the user. An operation mode control step of changing from the first operation mode to the second operation mode when an instruction to change from the first operation mode to the second operation mode is received from the server; In response to the change to the second operation mode in the mode control step, a provision information acquisition step of acquiring the provision information from the server, and the second operation mode Is information sharing program for executing a transmission step, to a computer that transmits the provided information acquired in said providing information obtaining step through said second communication unit operating in de to the user terminal.

  One aspect of the present invention is a first operation mode in which wireless communication is performed with a communication method for authenticating a user terminal and a user, or a second operation in which wireless communication is performed with a communication method without authentication between the user terminal and the user. An information sharing program executed in a user terminal that operates in a mode and includes a communication unit that performs wireless communication with an access point that holds shared information including information that a user should share regarding an abnormal situation, and a display unit. A connection step for controlling the communication unit to perform wireless communication with the access point in the second operation mode, and acquiring the shared information from the access point connected in the connection step For causing a computer to execute a step and a display step of displaying the shared information acquired in the shared information acquiring step on the display unit Is an information sharing program.

  According to the present invention, in a state where the user terminal cannot be connected to the network due to the influence of the abnormal situation, the user can provide information regarding the abnormal situation to the user terminal.

It is a block diagram which shows the structural example of the information provision system provided with the disaster information server in this embodiment, and an access point. It is a figure which shows the structural example of the disaster information server 2, the access point 4, and the user terminal 6 of this embodiment. It is a figure which shows the structural example of the information recorded on present condition information DB21, shared information DB22, and AP information DB27. It is a figure which shows the structural example of the information stored in the position information storage part 43, the present condition information storage part 44, and the present condition information storage part 65. FIG. It is a sequence diagram which shows operation | movement 1 of the information provision system 1 of this embodiment. It is a sequence diagram which shows operation | movement 2 of the information provision system 1 of this embodiment.

Hereinafter, an information providing system including a disaster information server (information providing server) and an access point according to an embodiment of the present invention will be described with reference to the drawings.
<Outline of information provision system>
FIG. 1 is a block diagram illustrating a configuration example of an information providing system including a disaster information server and an access point in the present embodiment. As shown in FIG. 1, the information providing system 1 according to the present embodiment includes a disaster information server 2 and access points 4-1, 4-2, 4-3, (hereinafter referred to as “access point 4”). Prepare.

  The disaster information server 2 can communicate with the access point 4 via the network 3 and includes a current status information DB (database) 21. The network 3 is a network including a communication network such as the Internet and NGN (Next Generation Network) that performs communication using Internet protocol technology. The current situation information DB 21 provides information obtained at the present time regarding disaster-stricken areas and the surrounding transportation facilities, and information obtained at the present time regarding public utilities such as electricity, gas, water, etc. It is a database that stores information in association with information management categories that are classified into categories such as “railway”, “road”, “electricity”, and “evacuation information”.

  The access point 4 provides wireless LAN services such as Wi-Fi (registered trademark) service to user terminals 6-1, 6-2, 6-3, 6-4, 6-5,. Provided to terminal 6). The access point 4 performs wireless communication with the user terminal 6 via the wireless networks 5-1, 5-2, 5-3,... (Hereinafter referred to as the wireless network 5).

  The user terminal 6 is a wireless communication terminal that can wirelessly communicate with the access point 4 via the wireless network 5 and is, for example, a mobile phone having a Wi-Fi (registered trademark) communication function.

  An ISP (Internet Service Provider) 7 provides a service for connecting to the Internet to the user terminal 6 and a computer terminal (not shown in FIG. 1) connectable to the Internet. The ISP 7 includes a service providing unit 71 that provides various services using the Internet to the user terminal 6 and the computer terminal.

  In the event of a disaster, the disaster information server 2 provides information on the disaster area and its surrounding transportation facilities and public utilities such as electricity, gas, and water for the access point 4 located in and around the disaster area. It has a function to provide information and the like. The disaster information server 2 has a function of determining that a disaster has occurred when it is detected that communication with a plurality of access points 4 in a specific range cannot be performed (determined that communication is impossible).

  The disaster information server 2 has a function of receiving the location information of the access point 4 from the access point 4 via the network 3 in advance and holding the location information of the access point 4 before a disaster occurs. The disaster information server 2 has a function of identifying a disaster area (area of the disaster area) based on position information of a plurality of access points 4 in a specific range where communication is disabled. The disaster information server 2 provides information (hereinafter referred to as shared information) that the disaster information server 2 wants to share among disaster victims, such as information on the identified disaster area and its surrounding transportation facilities, information on public utilities such as electricity, gas, and water. It has a function of collecting via the network 3. The disaster information server 2 has a function of identifying a plurality of access points 4 (hereinafter referred to as “peripheral access points 4”) that can communicate via the network 3 located in the vicinity of the identified disaster area based on the position information.

  The disaster information server 2 has a function of instructing the identified peripheral access point 4 to shift to the disaster area peripheral mode. The disaster information server 2 has a function of receiving a request for current status information from the peripheral access point 4 that has shifted to the disaster area peripheral mode. The disaster information server 2 has a function of generating current status information corresponding to information management classifications indicating categories such as “railway”, “road”, “electricity”, and “evacuation information” based on the collected shared information. The disaster information server 2 generates current status information in response to a request for current status information received from the peripheral access point 4, and transmits the generated current status information to the peripheral access point 4.

  Here, the current status information and the shared information that is the basis of the current status information should be shared by the user of the user terminal 6 in order to cope with the abnormal situation in and around the area where the abnormal situation such as a disaster has occurred. Information. The current status information and the shared information are preferably information that may change according to the transition of abnormal situations or the situation of human support, and information related to the time when the current status information was generated or shared information is registered. Associated with information about time. In addition, the current status information and the shared information may include information that does not change with time, such as map information indicating the location of an evacuation site or a hospital.

  Information necessary for users to respond to abnormal situations includes information on transportation for users to move, information useful for users to ensure food, communication, evacuation, etc. It is information about hospitals to receive. In the present embodiment, the disaster information server 2 generates, as current status information, information obtained by collecting information corresponding to the information management classification into one image data based on the shared information.

  The access point 4 is installed, for example, in a user's home, store, public facility, etc., in order to provide a wireless LAN service to the user terminal 6. The access point 4 receives, from the disaster information server 2, and holds the function of transmitting location information including information on its latitude and longitude to the disaster information server 2 and the current status information generated in the disaster information server 2. It has the function to do.

  The access point 4 has a function of shifting to a disaster area peripheral mode or a disaster mode, which is a mode for accepting access from any user terminal 6 at the time of a disaster. The access point 4 has a function of transmitting a request for the current status information to the disaster information server 2 when the access point 4 shifts to the disaster area peripheral mode. The access point 4 has a function of receiving and holding the requested current status information from the disaster information server 2. The access point 4 has a function of acquiring current status information held by the accessing user terminal 6 when the disaster mode is entered.

  The wireless network 5 is a network realized by a wireless LAN service provided by the access point 4. The user terminal 6 has a function of acquiring and storing current status information from the peripheral access point 4 that has shifted to the disaster area peripheral mode, and displaying the acquired current status information on the display unit. The user terminal 6 has a function of transmitting current status information to the access point 4 that has shifted to the disaster mode. The user terminal 6 is mounted with a disaster application that performs wireless communication with the peripheral access point 4 that has shifted to the disaster area peripheral mode or the access point 4 that has shifted to the disaster mode, and processes the current status information.

  The numbers and connection states of the access point 4, the wireless network 5, and the user terminal 6 shown in FIG. 1 are examples. As shown in FIG. 1, the access point 4-1 performs wireless communication with the user terminals 6-1 and 6-2 via the wireless network 5-1. The access point 4-2 performs wireless communication with the user terminals 6-3 and 6-4 via the wireless network 5-2. The access point 4-3 performs wireless communication with the user terminal 6-5 via the wireless network 5-3.

Next, a configuration example of the disaster information server 2 and the access point 4 included in the information providing system 1 of the present embodiment and a configuration example of the user terminal 6 will be described.
FIG. 2 is a diagram illustrating a configuration example of the disaster information server 2, the access point 4, and the user terminal 6 according to the present embodiment.

<< Configuration of Disaster Information Server 2 >>
As shown in FIG. 2, the disaster information server 2 includes a current status information DB 21, a shared information DB 22, a current status information processing unit 23, an information input unit 24, a communication unit 25, an information collection unit 26, and an AP information DB 27. And an AP information processing unit 28 that performs determination of occurrence of a disaster, identification of a disaster area, identification of peripheral access points 4, and the like. As described above, the current status information DB 21 is a database that stores the current status information of the disaster area and its surroundings in association with the information management category. The shared information DB 22 is a database that stores shared information registered from the information input unit 24 and the information collection unit 26.

  The current status information processing unit 23 generates current status information corresponding to the information management category based on the shared information recorded in the shared information DB 22. The current status information processing unit 23 records the generated current status information in the current status information DB 21. The current status information processing unit 23 outputs the generated current status information to the communication unit 25. Thereby, the communication unit 25 transmits the current status information generated by the current status information processing unit 23 to the access point 4 that has requested the current status information.

  Note that the current status information processing unit 23 of the present embodiment is configured to generate current status information of image data, but this is not restrictive. The current status information processing unit 23 may be configured to generate current status information including character data together with image data, or may be configured to generate current status information including only character data.

  The information input unit 24 inputs a part of shared information registered in the shared information DB 22. The information input unit 24 is, for example, an input device such as a keyboard (not shown in FIG. 2) operated by the administrator of the disaster information server 2. The communication unit 25 communicates with the access point 4, the ISP 7 on the network 3, a server, and the like (not shown in FIG. 2) via the network 3.

  In addition, the information collection unit 26 collects shared information about the disaster area identified by the AP information processing unit 28 and the surrounding area from the network 3 via the communication unit 25 and registers the collected information in the shared information DB 22. The information collection unit 26 collects, for example, information on transportation facilities in the disaster area identified by the AP information processing unit 28 and its surrounding area, information on public utility facilities such as electricity, gas, and water, and the like, and the shared information DB 22 Register with. In addition, the information collection unit 26 collects the shared information once recorded in the shared information DB 22 from the network 3 via the communication unit 25 periodically or at an arbitrary timing, and registers the shared information registered in the shared information DB 22. It also has a function to update information. The current status information processing unit 23 generates current status information based on the updated shared information in response to the update of the shared information registered in the shared information DB 22.

  The disaster information server 2 of the present embodiment is configured to register the shared information input by the information input unit 24 and the shared information acquired by the information collecting unit 26 in the shared information DB 22, but this is not restrictive. For example, the disaster information server 2 may be configured to record only the shared information input by the information input unit 24 in the shared information DB 22, and record only the shared information acquired by the information collecting unit 26 in the shared information DB 22. There may be a configuration.

  The AP information DB 27 is a database that records location information related to the access point 4 in association with an AP-ID that identifies each access point 4. The AP information processing unit 28 performs processing for receiving the location information of the access point 4 from the access point 4 via the network 3 and recording it in the AP information DB 27. The AP information processing unit 28 generates an AP-ID that is an identifier for identifying each access point 4 and records the location information in the AP information DB 27 in association with the AP-ID. The AP information processing unit 28 transmits the generated AP-ID to the corresponding access point 4 via the communication unit 25.

  When the AP information processing unit 28 detects that communication with the plurality of access points 4 in the specific range via the network 3 is impossible based on the position information referred from the AP information DB 27 (determines that communication is impossible), Is determined to have occurred. The AP information processing unit 28 receives the location information of the access point 4 from the access point 4 via the network 3 in advance before a disaster occurs, and records the location information of the access point 4 in the AP information DB 27.

  The AP information processing unit 28 refers to the location information of the plurality of access points 4 in the specific range where communication is disabled, and specifies the disaster area by referring to the AP information DB 27. The AP information processing unit 28 specifies the peripheral access points 4 located in the vicinity of the specified disaster area based on the position information referred from the AP information DB 27. The AP information processing unit 28 instructs the identified peripheral access point 4 to shift to the disaster area peripheral mode.

  Here, a specific example of the information recorded in the current status information DB 21 and the shared information DB 22 will be described. FIG. 3 is a diagram illustrating a configuration example of information recorded in the current status information DB 21, the shared information DB 22, and the AP information DB 27.

  As shown in FIG. 3A, the current status information DB 21 includes a table that stores the generation date 21b and the current status information 21c in association with the information management section 21a. In the example of FIG. 3A, the generation date 21b = “201x year y month z day 12:01:01” in association with the information management section 21a = “railway operation information”, and the current status information 21c = “Realinfo.gif”. Is recorded. “Railway operation information” is information specifying the category and contents of the current status information 21c. “201x year y month z day 12:01:01” is information relating to the time when the current state information 21c is generated. “Realinfo.gif” is a file name of image data in the GIF format, and this image data includes operation information of the disaster area and the surrounding railway.

  As shown in FIG. 3B, the shared information DB 22 includes a table for storing shared information including a registration time 22a, a management section 22b, an information section 22c, information 22d, and so on. In the example of FIG. 3B, the registration time 22a = “201a year b month c day 12:01:01”, management division 22b = “notification 1”, information division 22c = “railway”, information 22d = "XX line-suspended" is recorded as one piece of shared information. “201a year b month c day 12:01:01” is information relating to the time when the shared information is registered. “Notification 1” is information for identifying shared information. “Railway” is information specifying the category and content of shared information. “XX Line-Unavailable” is operation information related to the disaster area and the surrounding railways input from the information input unit 24 or the information collection unit 26.

  In addition to “railway”, “road”, “water supply”, “public 1”, “public 2”, and the like may be used as the information classification 22c. Corresponding to the information section 22c = “road”, information 22d = “XX line-landslide” may be stored. Information 22d = “ΔΔ-restore” may be stored in correspondence with the information classification 22c = “water supply”. Corresponding to information classification 22c = “Public 1”, information 22d = “□□ Supported goods arrival” may be stored. The information 22d = “◇◇ hospital reception start” may be stored corresponding to the information classification 22c = “public 2”.

  As shown in FIG. 3C, the AP information DB 27 includes a table that stores latitude 27b and longitude 27c, which are location information of the access point 4, in association with the AP-ID 27a that identifies the access point 4. In the example of FIG. 3C, latitude 27b = “36.00000” and longitude 27c = “135.00000” are stored in association with AP-ID 27a = “12345”.

<< Configuration of Access Point 4 >>
The access point 4 includes a first wireless communication unit 41, a second wireless communication unit 42, a position information storage unit 43, a current state information storage unit 44, a current state information processing unit 45, and a wired communication unit 46. The access point 4 receives a normal mode that operates as a normal access point during normal times, accepts access from any user terminal 6 regardless of the user at the time of a disaster, and acquires current status information from the disaster information server 2 In the disaster area surrounding mode which is a mode provided to the user terminal 6, and a mode in which access from any user terminal 6 is accepted regardless of the user at the time of a disaster, and current status information is transmitted to and received from the user terminal 6 Has a disaster mode.

  The first wireless communication unit 41 performs wireless communication with the user terminal 6 via the wireless network 5 in the normal mode. The first wireless communication unit 41 authenticates the user of the user terminal 6 and then encrypts data to be wirelessly communicated with a predetermined encryption method.

  The second wireless communication unit 42 uses the disaster SSID as an SSID (Service Set Identifier) that is an identification name of the access point 4 in the wireless LAN, for example, in the disaster area surrounding mode or the disaster mode, and does not require user authentication. Wireless communication with the user terminal 6 is performed without performing communication encryption (for example, open authentication). As a result, even if the user terminal 6 has not been able to perform wireless communication with the access point 4 in the normal mode because user authentication is not required, wireless communication with the access point 4 in the disaster area peripheral mode or the disaster mode is possible. It can be carried out.

  The position information storage unit 43 stores position information including information on the latitude and longitude of the position where the access point 4 is installed in association with the AP-ID. This location information is registered by the administrator of the access point 4 when the access point 4 is installed, for example. The AP-ID is received from the disaster information server 2 in response to the transmission of the location information to the disaster information server 2. The current status information storage unit 44 stores the current status information received from the disaster information server 2 and the generation date and time of the current status information in association with the information management classification.

  The current status information processing unit 45 transmits the position information read from the position information storage unit 43 in the normal mode to the disaster information server 2 via the wired communication unit 46 and the network 3. Thereby, the wired communication unit 46 receives the AP-ID from the disaster information server 2. The current status information processing unit 45 receives the AP-ID received by the wired communication unit 46 and stores it in the current status information storage unit 44. The wired communication unit 46 communicates with the disaster information server 2 and the ISP 7 via the network 3. The current status information processing unit 45 is connected to the second wireless communication unit 42, the position information storage unit 43, the current status information storage unit 44, and the wired communication unit 46.

  The current status information processing unit 45 transmits a request for current status information to the disaster information server 2 when the disaster information peripheral mode is entered. The current status information processing unit 45 receives the requested current status information from the disaster information server 2 and stores it in the current status information storage unit 44. The current status information processing unit 45 transmits the current status information read from the current status information storage unit 44 to the user terminal 6 via the second wireless communication unit 42 when the disaster status peripheral mode is entered. The current status information processing unit 45 distributes current status information to the user terminal 6 after starting the disaster application.

  The current status information processing unit 45 acquires the current status information held by the accessing user terminal 6 when shifting to the disaster mode. The current status information processing unit 45 compares the generation date and time of the current status information acquired from the user terminal 6 with the current status information stored in the current status information storage unit 44. If the current status information processing unit 45 determines that the current status information held by the user terminal 6 includes new current status information (current status information not stored in the current status information storage unit 44), the new status information is stored. Only the current status information is added to the current status information storage unit 44. When the current status information processing unit 45 determines that the current status information stored in the current status information storage unit 44 includes new current status information (current status information not held by the user terminal 6) by comparing the generation date and time. Only the new current status information is transmitted to the user terminal 6. That is, the current status information processing unit 45 obtains the current status information as a difference between the current status information held by the user terminal 6 by the comparison of the generation date and the current status information stored in the current status information storage unit 44. The current state information storage unit 44 or the user terminal 6 that does not have information is stored. The user terminal 6 can wirelessly communicate with the access point 4 that has shifted to the disaster mode after starting the disaster application.

  Here, a specific example of the information stored in the position information storage unit 43 and the current status information storage unit 44 will be described. FIG. 4 is a diagram illustrating a configuration example of information stored in the position information storage unit 43, the current state information storage unit 44, and the current state information storage unit 65.

  As shown in FIG. 4A, the location information storage unit 43 associates the AP-ID 27a with the latitude 27b and longitude 27c, which are location information of the access point 4, and the address of the place where the access point 4 is installed. 43a is stored. In the example of FIG. 4A, AP-ID 27a, latitude 27b, and longitude 27c store the same contents as AP-ID 27a, latitude 27b, and longitude 27c shown in FIG. 3C, and address 43a = Osaka City Kita-ku XX is stored.

  As shown in FIG. 4B, the current status information storage unit 44 includes a table that stores the generation date 21b and the current status information 21c in association with the information management section 21a. In the example of FIG. 4B, the information management section 21a, generation date 21b, and current status information 21c store the same contents as the information management section 21a, generation date 21b, and current status information 21c shown in FIG. Yes.

<< Configuration of User Terminal 6 >>
The user terminal 6 includes a normal communication unit 61, a disaster communication unit 62, an information processing unit 63, a display unit 64, and a current status information storage unit 65. The user terminal 6 has a normal mode in which wireless communication is performed with the access point 4 in the normal mode, and a disaster mode in which the disaster application is activated and communicates with the access point 4 in the disaster area peripheral mode or the disaster mode in the event of a disaster. . When the user terminal 6 shifts to the disaster mode by activating the disaster application, the user terminal 6 can perform wireless communication with the access point 4 in the disaster area peripheral mode or the disaster mode. In addition, the user terminal 6 can acquire the current status information from the access point 4 or display the acquired current status information on the display unit 64 by the user operating the screen of the disaster application.

  The normal time communication unit 61 performs wireless communication with the access point 4 via the wireless network 5 in the normal mode. The normal communication unit 61 has a function of transmitting a user authentication request to the access point 4 and a function of encrypting data to be wirelessly communicated with the access point 4 using a predetermined encryption method.

  The disaster communication unit 62, the information processing unit 63, and the current status information storage unit 65 of the user terminal 6 function when the user activates the disaster application. The disaster communication unit 62 communicates with the access point 4 in the disaster mode based on the disaster SSID in the disaster mode. The disaster communication unit 62 does not encrypt / decrypt communication data when communicating with the access point 4 in the disaster mode. The information processing unit 63 has a function of transmitting a request for current status information to the access point 4 via the disaster communication unit 62. In response to this request, the disaster communication unit 62 receives the current status information from the access point 4.

  The information processing unit 63 displays the current status information received by the disaster communication unit 62 on the display unit 64 or stores it in the current status information storage unit 65. The information processing unit 63 performs processing according to the function of the disaster application. The information processing unit 63 has a function of acquiring current status information from the access point 4 in the disaster area peripheral mode and a function of transmitting current status information stored in the current status information storage unit 65 to the access point 4 in disaster mode. The display unit 64 is configured by a liquid crystal display device, for example, and displays characters and images. The current status information storage unit 65 stores the current status information received from the information processing unit 63. The configuration example of the current status information stored in the current status information storage unit 65 is the same as the configuration example of the current status information illustrated in FIG.

<< Operation 1 of Information Providing System 1 >>
In the information providing system 1, an operation when a disaster occurs in a place where the access point 4-2 is installed will be described. Further, for convenience of explanation, it is assumed that the access point 4-1 is installed around the disaster area. In the information providing system 1, an operation when the access point 4-1 located in the vicinity of the disaster area shifts to the disaster area peripheral mode will be described.

FIG. 5 is a sequence diagram showing an operation 1 of the information providing system 1 of the present embodiment. FIG. 5 shows operations of the access point 4-1 installed in the vicinity of the disaster area and the user terminal 6-1 located at a position where wireless communication with the access point 4-1 is possible.
In the access point 4-1, the administrator of the access point 4-1 registers position information that is information regarding the position where the access point 4-1 is installed (step S <b> 101). Thereby, the position information according to the installation position of the access point 4-1 is registered in the position information storage unit 43.

  The access point 4-1 transmits the position information read from the position information storage unit 43 in the normal mode to the disaster information server 2 (step S <b> 102). Thereby, the communication unit 25 of the disaster information server 2 receives the position information from the access point 4-1.

  The AP information processing unit 28 performs processing for recording the position information received by the communication unit 25 in the AP information DB 27. (Step S103). The AP information processing unit 28 generates an AP-ID that is an identifier for identifying each access point 4 and records the location information in the AP information DB 27 in association with the AP-ID. The AP information processing unit 28 transmits the generated AP-ID to the corresponding access point 4 via the communication unit 25 (step S104). Although not shown in FIG. 5, the processing of steps S101 to S104 is also performed at other access points 4-2, 4-3,.

Here, it is assumed that a disaster has occurred in the area where the access point 4-2 is installed.
When the AP information processing unit 28 detects that it cannot communicate with the plurality of access points 4 including the access point 4-2 in the specific range via the network 3 based on the position information referred from the AP information DB 27, the disaster Is determined to have occurred. The AP information processing unit 28 refers to the location information of the plurality of access points 4 in the specific range where communication is disabled from the AP information DB 27 and specifies the disaster area (step S105). The information collecting unit 26 collects shared information regarding the disaster area identified by the AP information processing unit 28 from the network 3 via the communication unit 25 and the surrounding area, and registers the collected information in the shared information DB 22 (step S105).

  The AP information processing unit 28 specifies the peripheral access point 4 including the access point 4-1 located in the vicinity of the specified disaster area based on the position information referred from the AP information DB 27. The AP information processing unit 28 instructs the identified access point 4-1 to shift to the disaster area peripheral mode (step S106). Thereby, the access point 4-1 shifts to the disaster area peripheral mode (step S107). The current status information processing unit 45 of the access point 4-1 transmits a request for current status information to the disaster information server 2 when shifting to the disaster area peripheral mode (step S <b> 108).

  In response to the request for the current status information from the access point 4-1, the current status information processing unit 23 of the disaster information server 2 obtains the current status information corresponding to the information management category based on the shared information recorded in the shared information DB 22. Generate (step S109). The current status information processing unit 23 transmits the generated current status information to the access point 4-1 that requested the current status information via the communication unit 25 (step S <b> 110). The current status information processing unit 45 of the access point 4-1 receives the requested current status information from the disaster information server 2 and stores it in the current status information storage unit 44 (step S111). Although not shown in FIG. 5, the processes in steps S106 to S111 are also performed in the peripheral access point 4 including the access point 4-1.

  In parallel with steps S107 and S111 at the access point 4-1, the operation at step S112 is also performed at the user terminal 6-1. When a disaster occurs near the current location of the user, the user activates the disaster application on the user terminal 6-1 (step S112). As a result, the user terminal 6-1 enters the disaster mode, and the disaster communication unit 62 starts accessing the access point 4-1 using the disaster SSID (step S113). The access point 4-1 permits attribution using the disaster SSID of the user terminal 6-1 (step S <b> 114).

  The information processing unit 63 of the user terminal 6-1 transmits a request for current status information to the access point 4-1 via the disaster communication unit 62 (step S115). The current status information processing unit 45 of the access point 4-1 transmits the current status information read from the current status information storage unit 44 via the second wireless communication unit 42 to the user terminal 6-1 (step S116). The information processing unit 63 of the user terminal 6-1 stores the current status information received by the disaster communication unit 62 in the current status information storage unit 65 (step S117) and displays it on the display unit 64 (step S118).

  By the above operation 1, the user can check the current status information displayed on the display unit 64 of the user terminal 6-1 and take appropriate evacuation action or the like. Further, since the access point 4-1 in the stricken area peripheral mode does not authenticate the user, the wireless communication with the access point 4-1 in the normal mode cannot be performed due to reasons such as a contract with a different mobile communication carrier. Wireless communication is also possible with user terminals (hereinafter referred to as other company contract terminals). The access point 4-1 in the stricken area peripheral mode can provide current status information to such other party contract terminals as long as the disaster application is activated in the contract terminal of another company. Therefore, the information providing system 1 is a contract of other companies that cannot connect to the network 3 when the access point that provides the wireless communication service to the other party's contract terminal installed in the vicinity of the disaster area cannot be connected to the network 3 due to the disaster. Current status information can be provided to the terminal.

<< Operation 2 of Information Providing System 1 >>
In the information providing system 1, an operation when a disaster occurs in a place where the access point 4-2 is installed will be described. In the information providing system 1, an operation when the access point 4-2 installed in a disaster area shifts to the disaster mode will be described. Further, for convenience of explanation, the user terminal 6-3 acquires and holds the current status information from the access point 4 in the disaster area peripheral mode in the vicinity of the disaster area, and thereafter, a position where wireless communication with the access point 4-2 is possible. Suppose you have moved to.

FIG. 6 is a sequence diagram showing an operation 2 of the information providing system 1 according to the present embodiment. FIG. 6 illustrates operations of the access point 4-2 installed in the disaster area and the user terminal 6-3 located at a position where wireless communication with the access point 4-2 is possible.
The access point 4-2 shifts to the disaster mode when the two conditions of being unable to communicate with the disaster information server 2 and being accessed from the user terminal 6 that started the disaster application are satisfied ( Step S200).

  If the connection between the access point 4-2 and the network 3 is disconnected due to the influence of a disaster, the user terminal 6-3 cannot be connected to the network 3. That is, the user terminal 6-3 cannot use various services provided by the ISP 7 via the Internet. In such a case, the user activates the disaster application on the user terminal 6-3 (step S201). As a result, the user terminal 6-3 enters the disaster mode, and the disaster communication unit 62 starts accessing the access point 4-2 using the disaster SSID (step S202). The access point 4-2 permits attribution using the disaster SSID of the user terminal 6-3 (step S203). As described above, since the user terminal 6-3 performs wireless communication with the access point 4 in the disaster area peripheral mode in the vicinity of the disaster area, the access point 4-2 remains in a state where the disaster application is activated. It may be possible to move to step S202 by moving to a position where wireless communication is possible.

  The information processing unit 63 of the user terminal 6-3 transmits the current status information stored in the current status information storage unit 65 to the access point 4-2, so that the current status information stored in the current status information storage unit 65 is stored. Confirmation is performed (step S204). The current status information processing unit 45 of the access point 4-2 compares the generation date and time of the received current status information with the current status information stored in the current status information storage unit 44. When the current status information processing unit 45 determines that the new status information is included in the current status information held by the user terminal 6-3 by comparing the generation date and time (YES in step S205), the new current status information is stored. The current status information storage unit 44 is updated by adding only the information to the current status information storage unit 44 (step S206).

  If it is determined that the new status information is not included in the current status information held by the user terminal 6-3 by comparing the generation date and time (NO in step S205), the current status information processing unit 45 performs the comparison. It is determined whether the current status information held by the user terminal 6-3 includes old status information. Here, when it is determined that the current status information held by the user terminal 6-3 includes old status information (YES in step S207), the current status information processing unit 45 acquires a new status from the current status information storage unit 44. Current status information is read and transmitted to the user terminal 6-3 (step S208). If it is determined that the current status information held by the user terminal 6-3 does not include old status information (NO in step S207), the current status information processing unit 45 proceeds to the next process.

  The information processing unit 63 of the user terminal 6-3 stores the new current status information received by the disaster communication unit 62 in the current status information storage unit 65 and updates the current status information storage unit 65 (step S209). The information processing unit 63 displays the new current status information received by the disaster communication unit 62 on the display unit 64 (step S210).

  By the above operation 2, the disaster mode access point 4-2 installed in the disaster area can acquire the current status information from the user terminal 6-3 that holds the current status information from the vicinity of the disaster area, for example. Further, when the current status information is already stored in the current status information storage unit 44, the disaster mode access point 4-2 stores the current status information acquired from the user terminal 6-3 and the current status information storage unit 44. The generation date and time of the current status information is compared, only the latest current status information that is the difference is stored in the current status information storage unit 44, and only the latest current status information that is the difference is transmitted to the user terminal 6-3. be able to. Thereby, based on the current status information held in the disaster mode access point 4-2 and the user terminal 6-3, the current status information held can be mutually updated to the latest current status information.

<Modification>
Next, as a modification of the information providing system 1, the disaster information server 2 further includes a configuration in which the standard information is provided to the access point 4, and the access point 4 further includes a configuration in which the standard information is provided to the user terminal 6. An example will be described. Here, the fixed information is information for the user to move and evacuate safely at the time of a disaster, for example, map data of evacuation shelters and hospitals, character data of names and addresses of evacuation shelters and hospitals, etc. .

  The disaster information server 2 further has a function of providing standard information including maps of shelters, hospitals, and the like around the installation location of the access point 4 to the access point 4. The disaster information server 2 further has a function of generating fixed information based on the position information and transmitting the generated fixed information to the access point 4.

  The access point 4 further has a function of receiving the fixed information generated in the disaster information server 2 before the occurrence of the disaster from the disaster information server 2 and holding it. The access point 4 further has a function of providing to the user terminal 6 that has accessed the standard information that is held when the disaster mode is shifted to the disaster mode. The user terminal 6 is equipped with a disaster application that further has a function of acquiring the standard information from the access point 4 that has shifted to the disaster mode and displaying it on the display unit.

  As described above, according to the information providing system 1 of the present embodiment, when the function of the network 3 in the disaster area stops due to the influence of the disaster, the current status information is obtained from the access point 4 without using the network 3. It can be provided to the user terminal 6. Thereby, the user can obtain information on traffic in the stricken area and information on lifelines such as electricity and water using the user terminal 6. In addition, since the access point 4 does not restrict access to the user terminals 6 in the disaster mode, it can provide current status information to more user terminals 6. In addition, the user can connect to the access point 4 that is not normally connectable by installing a disaster application on the user terminal 6 and starting it during a disaster.

  You may make it implement | achieve each function in the disaster information server 2, the access point 4, and the user terminal 6 in embodiment mentioned above with a computer. In that case, a program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system serving as a server or a client in that case may be included and a program held for a certain period of time. Further, the program may be a program for realizing a part of the above-described functions, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system. You may implement | achieve using programmable logic devices, such as FPGA (Field Programmable Gate Array).

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Information provision system, 2 ... Disaster information server, 3 ... Network, 4, 4-1, 4-2, 4-3 ... Access point, 5, 5-1, 5-2, 5-3 ... Wireless network, 6, 6-1, 6-2, 6-3, 6-4, 6-5 ... user terminal, 7 ... ISP, 21 ... current status information DB, 22 ... shared information DB, 23 ... current status information processing unit, 24 ... Information input unit, 26 ... Information collection unit, 27 ... AP information DB, 28 ... AP information processing unit, 41 ... First wireless communication unit, 42 ... Second wireless communication unit, 43 ... Location information storage unit, 44 ... Current status Information storage unit 45 ... Current state information processing unit 46 ... Wired communication unit 61 ... Normal communication unit 62 62 Disaster communication unit 63 Information processing unit 64 Display unit 65 Current state storage unit

Claims (14)

A first communication unit that communicates with an access point that provides wireless communication services to a plurality of user terminals via a network;
An acquisition unit that acquires position information that is information related to a position where the access point is installed;
Based on the location information of the access point that has become unable to communicate via the first communication unit, a region specifying unit that specifies a first region that is a region where an abnormal situation has occurred,
An access point identifying unit that identifies a peripheral access point that is an access point installed in a second region around the first region identified by the region identifying unit based on the location information;
A shared information acquisition unit that acquires shared information that is information that the user should share in relation to the abnormal situation in the first region and the second region;
A providing information generating unit that generates providing information that the access point provides to the user terminal based on the shared information acquired by the shared information acquiring unit;
A first transmission unit that transmits the provision information generated by the provision information generation unit to the peripheral access point specified by the access point specification unit via the first communication unit;
An information providing server comprising:   The operation mode instructing unit according to claim 1, further comprising an operation mode instruction unit that instructs the peripheral access point specified by the access point specifying unit to change to an operation mode in which access from the user terminal is accepted without user authentication. Information service server. The first communication unit receives the request for the provision information from the peripheral access point whose operation mode has been changed according to an instruction from the operation mode instruction unit,
The information providing server according to claim 2, wherein the first transmission unit transmits the provision information to the peripheral access point in response to the request for the provision information received by the first communication unit. A first operation mode in which wireless communication is performed using a communication method for authenticating users with a plurality of user terminals, or a second operation mode in which wireless communication is performed using a communication method without authentication between the user terminals and users. Two communication units;
A function of generating provision information provided to the user terminal including information to be shared by the user via the network regarding an abnormal situation, and a function of instructing a change from the first operation mode to the second operation mode A third communication unit for communicating with a server having
When the third communication unit receives an instruction to change from the first operation mode to the second operation mode from the server, the operation mode of the second communication unit is changed from the first operation mode to the second operation. An operation mode control unit for changing to a mode;
A provision information acquisition unit that acquires the provision information from the server in response to a change to the second operation mode by the operation mode control unit;
A second transmission unit for transmitting the provision information acquired by the provision information acquisition unit to the user terminal via the second communication unit operating in the second operation mode;
Access point with An information providing system comprising: an access point that provides a wireless communication service to a plurality of user terminals; and an information providing server that communicates with the access point via a network,
The information providing server includes:
A first communication unit that communicates with the access point via the network;
An acquisition unit that acquires position information that is information related to a position where the access point is installed;
Based on the location information of the access point that has become unable to communicate, a region identifying unit that identifies a first region that is a region where an abnormal situation has occurred;
An access point identifying unit that identifies a peripheral access point that is an access point installed in a second region around the first region identified by the region identifying unit based on the location information;
A shared information acquisition unit that acquires shared information that is information that the user should share in relation to the abnormal situation in the first region and the second region;
A providing information generating unit that generates providing information that the access point provides to the user terminal based on the shared information acquired by the shared information acquiring unit;
A first transmission unit that transmits the provision information generated by the provision information generation unit to the peripheral access point specified by the access point specification unit via the first communication unit;
With
The access point is
A second communication unit for performing wireless communication with the user terminal;
A third communication unit that communicates with the information providing server via the network;
A receiving unit that receives the provision information from the information provision server via the third communication unit;
A second transmitter that transmits the provision information received by the receiver to the user terminal via the second communication unit;
An information providing system comprising: An information providing method using an information providing server that communicates with an access point that provides a wireless communication service to a plurality of user terminals via a network,
An acquisition step of acquiring position information which is information relating to a position where the access point is installed;
An area specifying step for specifying a first area that is an area where an abnormal situation has occurred, based on the location information of the access point that has become unable to communicate;
An access point specifying step of specifying a peripheral access point, which is an access point installed in a second region around the first region specified in the region specifying step, based on the position information;
A shared information acquisition step of acquiring shared information that is information that the user should share regarding the abnormal situation in the first area and the second area;
A provision information generating step for generating provision information provided by the access point to the user terminal based on the shared information acquired in the shared information acquisition step;
A transmission step of transmitting the provision information generated in the provision information generation step to the peripheral access point identified in the access point identification step;
A method for providing information.   7. The operation mode instructing step of instructing the peripheral access point specified in the access point specifying step to change to an operation mode for accepting access from the user terminal without user authentication. Information provision method. A receiving step of receiving a request for the provision information from the peripheral access point whose operation mode has been changed according to an instruction of the operation mode instruction step;
A transmission step of transmitting the provision information to the peripheral access point in response to the request for the provision information received in the reception step;
The information providing method according to claim 7, further comprising: It is possible to communicate with a server that generates provided information provided to a user terminal including information that should be shared by the user regarding an abnormal situation via a network, and wirelessly by a communication method for authenticating the user terminal and the user An information sharing method using an access point that operates in a first operation mode in which communication is performed or a second operation mode in which wireless communication is performed in a communication method without authentication of the user terminal and the user,
An operation mode control step of changing from the first operation mode to the second operation mode when an instruction to change from the first operation mode to the second operation mode is received from the server;
A provision information acquisition step of acquiring the provision information from the server in response to the change to the second operation mode by the operation mode control step;
A transmission step of transmitting the provision information acquired in the provision information acquisition step to the user terminal;
An information sharing method. An information providing program that is executed by an information providing server that communicates with an access point that provides a wireless communication service to a plurality of user terminals via a network,
An acquisition step of acquiring position information which is information relating to a position where the access point is installed;
An area specifying step for specifying a first area that is an area where an abnormal situation has occurred, based on the location information of the access point that has become unable to communicate;
An access point specifying step of specifying a peripheral access point, which is an access point installed in a second region around the first region specified in the region specifying step, based on the position information;
A shared information acquisition step of acquiring shared information that is information that the user should share regarding the abnormal situation in the first area and the second area;
A provision information generating step for generating provision information provided by the access point to the user terminal based on the shared information acquired in the shared information acquisition step;
A transmission step of transmitting the provision information generated in the provision information generation step to the peripheral access point identified in the access point identification step;
Information providing program for causing computer to execute   11. The operation mode instructing step of instructing the peripheral access point specified in the access point specifying step to change to an operation mode for accepting access from the user terminal without user authentication. Information provision program. A receiving step of receiving a request for the provision information from the peripheral access point whose operation mode has been changed according to an instruction of the operation mode instruction step;
A transmission step of transmitting the provision information to the peripheral access point in response to the request for the provision information received in the reception step;
The information providing program according to claim 11, further comprising: It is possible to communicate with a server that generates provided information provided to a user terminal including information that should be shared by the user regarding an abnormal situation via a network, and wirelessly by a communication method for authenticating the user terminal and the user An information sharing program that is executed in an access point that operates in a first operation mode in which communication is performed or a second operation mode in which wireless communication is performed in a communication mode without user authentication with the user terminal,
An operation mode control step of changing from the first operation mode to the second operation mode when an instruction to change from the first operation mode to the second operation mode is received from the server;
A provision information acquisition step of acquiring the provision information from the server in response to the change to the second operation mode by the operation mode control step;
A transmission step of transmitting the provision information acquired in the provision information acquisition step to the user terminal;
Information sharing program to make computer execute. A user operates in a first operation mode in which wireless communication is performed using a communication method for authenticating the user terminal and the user, or in a second operation mode in which wireless communication is performed using a communication method without authentication between the user terminal and the user. Is an information sharing program executed on a user terminal including a communication unit that performs wireless communication with an access point that holds shared information including information that should be shared regarding an abnormal situation, and a display unit,
A connection step of controlling the communication unit to perform connection for wireless communication with the access point in the second operation mode;
A shared information acquisition step of acquiring the shared information from the access point connected by the connection step;
A display step of displaying the shared information acquired in the shared information acquiring step on the display unit;
Information sharing program to make computer execute.

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