JP4689447B2 - Position assurance system - Google Patents

Description

  The present invention relates to a position assurance system that guarantees that the position sent from a terminal is correct.

  Conventionally, Patent Document 1 discloses a position authentication system using a mobile terminal capable of improving the reliability of position authentication as a technique related to position assurance using a mobile terminal. This location authentication system includes a mobile phone as a mobile terminal possessed by a user, and an authentication server that manages location data and the like sent from the mobile phone. The mobile phone and the authentication server are connected via a mobile phone network including a base station and an exchange station. The mobile phone receives a GPS (Global Positioning System) signal transmitted from an artificial satellite and obtains accurate position information such as longitude and latitude of the point, and confirms that the user is the mobile phone user. It has a fingerprint authentication function. The position data and the identification result data are transmitted to the authentication server via the mobile phone network, and are centrally managed for each user by the database in the authentication server.

JP 2005-157799 A

  However, in the technique disclosed in Patent Document 1 described above, positioning of a position used for position assurance is performed using a GPS function incorporated in a terminal requesting position assurance (hereinafter referred to as “request terminal”). Yes. For this reason, it is possible to fake the position at the requesting terminal, and there is a problem that the position is guaranteed despite the incorrect position.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a position assurance system capable of increasing the reliability of position assurance.

  In order to solve the above-described problems, a position assurance system according to the present invention includes a center that performs position assurance, a request terminal that requests the center for its own position assurance, and a center for the position according to a request from the request terminal. The request terminal transmits a first position positioning unit for positioning its own position and its own position measured by the first position positioning unit to the center. A first communication unit, and a first short-range wireless communication unit that transmits a position transmission request for transmitting a position of the positioning terminal to the center by a short-range wireless communication. Responds to a position transmission request sent from a second short-range wireless communication unit, a second short-range wireless communication unit that receives a short-range wireless position transmission request from a request terminal, and a second short-range wireless communication unit Second position measurement A second communication unit that transmits the position measured by the unit to the center, and the center checks the validity of the position received from the request terminal based on the position received from the request terminal and the position received from the positioning terminal. And a position information check unit that performs position assurance.

  According to the position assurance system according to the present invention, since the position guarantee of the request terminal is performed based on the position information from the positioning terminal near the request terminal requesting the position guarantee, the reliability of the position guarantee is increased. be able to.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
1 is a diagram showing a configuration of a position assurance system according to Embodiment 1 of the present invention. This position assurance system includes a request terminal 1, the Internet 2, a center 3, and a positioning terminal 6.

  The request terminal 1 is a terminal that requests its own position guarantee. The request terminal 1 has a positioning function, a short-range wireless communication function, and an Internet communication function. The center 3 is a center that provides a position guarantee service and has an Internet communication function. The center 3 includes a request database 4 and a position assurance database 5. The request database 4 stores a position guarantee request sent from the request terminal 1. The position assurance database 5 stores information for performing position assurance. The positioning terminal 6 is a terminal located near the request terminal 1 and has a positioning function, a short-range wireless communication function, and an Internet communication function, like the request terminal 1.

  As the request terminal 1 and the positioning terminal 6, for example, a mobile phone, a PDA (Personal Digital Assistant), a notebook personal computer, or the like can be used. Further, the short-range wireless communication function in the request terminal 1 and the positioning terminal 6 can be realized by a wireless LAN, Bluetooth, specific low power wireless, or the like. Further, the Internet communication function in the request terminal 1, the positioning terminal 6 and the center 3 includes a method of directly accessing the Internet 2 from these, a method of accessing the Internet 2 via a hot spot by a wireless LAN, and the other Internet 2. It can be realized by the access method.

  FIG. 2 is a block diagram illustrating a functional configuration of the request terminal 1. Each block can be configured by a functional module created by software, for example. The request terminal 1 includes a position positioning unit 11, an Internet communication unit 12, a positioning request unit 13, and a short-range wireless communication unit 14.

  The position measurement unit 11 corresponds to the first position measurement unit of the present invention and measures its own current position. The positioning in the position positioning unit 11 can be performed using, for example, a GPS or a base station. The own current position measured by the position positioning unit 11 is sent to the Internet communication unit 12 as position information.

  The internet communication unit 12 corresponds to the first communication unit of the present invention and performs access to the internet 2 and communication via the internet 2. Specifically, the Internet communication unit 12 transmits the position information sent from the position measurement unit 11 and the terminal ID of the self (requesting terminal 1) to the center 3 via the Internet 2. Here, as a terminal ID, in addition to a unique ID for identifying the requesting terminal 1, for example, a telephone number or an e-mail address, it is assigned in advance by the position assurance service provider when using this position assurance system. ID can be used. Further, the Internet communication unit 12 receives a request ID (details will be described later) sent from the center 3 via the Internet 2 and sends it to the positioning request unit 13.

  In response to the request ID sent from the Internet communication unit 12, the positioning request unit 13 instructs the short-range wireless communication unit 14 to search for the positioning terminal 6 that requests the positioning. In addition, when the positioning request unit 13 receives the information representing the searched positioning terminal 6 from the short-range wireless communication unit 14, the positioning request unit 13 instructs the short-range wireless communication unit 14 to request the positioning terminal 6 to perform positioning. To do.

  The short-range wireless communication unit 14 corresponds to the first short-range wireless communication unit of the present invention, and uses a short-range wireless to access a nearby terminal, communicate with and communicate with the terminal. 6 is searched. Specifically, the short-range wireless communication unit 14 responds to a positioning request from the positioning request unit 13 and checks whether or not a predetermined protocol can be executed by the short-range wireless, thereby enabling communication. 6 is searched. Information representing the positioning terminal 6 searched by the short-range wireless communication unit 14 is sent to the positioning request unit 13. In addition, in response to an instruction from the positioning request unit 13, the short-range wireless communication unit 14 requests a positioning by transmitting a request ID by the short-range wireless to the searched positioning terminal 6.

  FIG. 3 is a block diagram showing a functional configuration of the center 3. Each block can be configured by a functional module created by software, for example. The center 3 includes an Internet communication unit 21, a request ID generation unit 22, a request database management unit 23, a location guarantee database management unit 24, and a location information check unit 25.

  The Internet communication unit 21 performs access to the Internet 2 and communication via the Internet 2. Specifically, the Internet communication unit 21 receives the terminal ID and the position information transmitted from the request terminal 1 via the Internet 2 and sends them to the request ID generation unit 22, and from the positioning terminal 6 via the Internet 2. The received request ID, position information, position positioning error and short-range wireless communication possible distance (details will be described later) are received and sent to the position assurance database management unit 24. The Internet communication unit 21 transmits the request ID sent from the request ID generation unit 22 to the request terminal 1 via the Internet 2.

  The request ID generation unit 22 generates a unique request ID corresponding to the position guarantee request sent from the request terminal 1. Specifically, the request ID generation unit 22 generates a request ID corresponding to the terminal ID and location information sent from the Internet communication unit 21 and sends the request ID to the request database management unit 23 together with the terminal ID and location information. .

  The request database management unit 23 accesses the request database 4 and manages records. Specifically, as shown in FIG. 6, the request database management unit 23 includes a terminal ID, position information (hereinafter referred to as “request position information”) and a request ID sent from the request ID generation unit 22, The current time (hereinafter referred to as “request reception time”) acquired from the clock mechanism that is not stored is stored as one record in the request database 4. Further, the request database management unit 23 is sent from the request ID generation unit 22. The terminal ID corresponding to the request ID and the request position information are extracted from the request database 4 and sent to the position guarantee database management unit 24.

  Further, the request database management unit 23 updates the request database 4. That is, the request database management unit 23 checks the request reception time of a record stored in the request database 4 at regular intervals, and deletes the record when a predetermined request valid time has passed. .

  The position guarantee database management unit 24 accesses the position guarantee database 5. Specifically, as shown in FIG. 7, the position assurance database management unit 24 adds the position information sent from the Internet communication unit 21 to the terminal ID and the requested position information sent from the request database management unit 23, A position information reception time indicating the current time acquired from a position measurement error, a short-range wireless communication possible distance, and a clock mechanism (not shown) is added and stored in the position assurance database 5 as one record. Further, the position guarantee database management unit 24 reads the contents of the position guarantee database 5 and sends them to the position information check unit 25.

  The position information check unit 25 checks the credibility of the requested position information sent from the request terminal 1. Specifically, the position information check unit 25 determines the position information of the request terminal 1 from the terminal ID, the requested position information, the position information, the position positioning error, and the short-range wireless communication possible distance stored in the position assurance database 5. Check the validity of. Details of the position information check unit 25 will be described later.

  FIG. 4 is a block diagram showing a functional configuration of the positioning terminal 6. Each block can be configured by a functional module created by software, for example. The positioning terminal 6 includes a position positioning unit 61, an Internet communication unit 62, and a short-range wireless communication unit 63.

  The position measurement unit 61 corresponds to the second position measurement unit of the present invention, and measures its current position. The positioning in the position positioning unit 61 can be performed using, for example, a GPS or a base station. The current current position measured by the position positioning unit 61 is sent to the Internet communication unit 62 as position information.

  The Internet communication unit 62 corresponds to the second communication unit of the present invention, and performs access to the Internet 2 and communication via the Internet 2. Specifically, the Internet communication unit 62 receives the request ID sent from the short-range wireless communication unit 63, the position information sent from the position positioning unit 61, the position positioning error in the position positioning unit 61, and the short-range wireless. The short-distance wireless communicable distance representing the communicable distance of the communication unit 63 is transmitted to the center 3 via the Internet 2.

  The short-range wireless communication unit 63 corresponds to the second short-range wireless communication unit of the present invention, and is a terminal capable of accessing, communicating with, and communicating with a nearby terminal using short-range wireless. Search for. Specifically, the short-range wireless communication unit 63 receives a request ID sent from the request terminal 1 by short-range wireless and sends it to the Internet communication unit 62.

  Next, the operation of the position assurance system configured as described above according to the first embodiment of the present invention will be described with reference to the sequence diagram shown in FIG. Will be described with reference to FIG.

  First, the request terminal 1 performs position positioning in order to request position guarantee (step ST11). That is, the position measurement unit 11 measures its current position and sends it to the Internet communication unit 12 as position information. Next, a position guarantee request is made (step ST12). That is, the Internet communication unit 12 sends the terminal ID of itself (requesting terminal 1) and the position information obtained in step ST11 to the center 3 via the Internet 2 to make a position guarantee request.

  In the center 3, the position guarantee request from the request terminal 1 is received (step ST31). That is, the Internet communication unit 21 receives the position guarantee request transmitted from the request terminal 1, that is, the terminal ID and the position information, and sends the request to the request ID generation unit 22. Next, a request ID is generated (step ST31). That is, the request ID generation unit 22 generates a request ID corresponding to the terminal ID and the position information (position guarantee request for the request terminal 1) sent from the Internet communication unit 21, and manages the request database together with the terminal ID and the position information. Send to part 23.

  Next, storage in the request database 4 is performed (step ST33). That is, the request database management unit 23 adds the request reception time to the terminal ID, the request position information, and the request ID received from the request ID generation unit 22 and stores them in the request database 4 as one record. FIG. 6 shows a state in which a plurality of records are stored in the request database 4.

  In the center 3, the request database 4 is updated in parallel with the above-described process and the process described later (step ST34). That is, the request database management unit 23 checks the request reception time of a record stored in the request database 4 at regular intervals, and deletes the record when a predetermined request valid time has passed. .

  Next, in the center 3, a request ID is transmitted (step ST35). That is, the internet communication unit 21 transmits the request ID generated by the request ID generation unit 22 to the request terminal 1 via the Internet 2 in step ST32.

  The request terminal 1 receives the request ID from the center 3 (step ST13). That is, the Internet communication unit 12 receives a request ID transmitted from the center 3 via the Internet 2 and sends it to the positioning request unit 13. In response to the request ID sent from the Internet communication unit 12, the positioning request unit 13 instructs the short-range wireless communication unit 14 to search for the positioning terminal 6 that requests the positioning. Next, the positioning terminal 6 is searched (step ST14). That is, the short-range wireless communication unit 14 searches for a positioning terminal 6 that can communicate with the short-range wireless in response to an instruction from the positioning request unit 13, and sends information representing the searched positioning terminal 6 to the positioning request unit. 13

  Next, a position transmission request is made (step ST15). That is, when the positioning request unit 13 receives the information representing the positioning terminal 6 searched in step ST14 from the short-range wireless communication unit 14, the short-range wireless communication unit requests the positioning terminal 6 to perform positioning. 14 is instructed. In response to an instruction from the positioning request unit 13, the short-range wireless communication unit 14 transmits a request ID by near-field wireless to the searched positioning terminal 6 to request positioning. Here, the request for position transmission may be made to all the positioning terminals 6 searched in step ST13, or to a certain number of positioning terminals 6 randomly selected from the searched positioning terminals 6. You may go.

  The positioning terminal 6 receives the position transmission request (step ST21). That is, the short-range wireless communication unit 63 receives the request ID transmitted from the request terminal 1 by short-range wireless and sends it to the Internet communication unit 62. Next, position measurement is performed (step ST11). That is, the position positioning unit 61 measures its current position and sends it to the Internet communication unit 62. Next, the positioning result is transmitted (step ST23). That is, the Internet communication unit 62 adds the position positioning error, the short-range wireless communicable distance, and the request ID received from the request terminal 1 to the position information obtained in step ST22, and sends it to the center 3 via the Internet 2. Send.

  In the center 3, the positioning result from the positioning terminal 6 is received (step ST36). That is, the Internet communication unit 21 receives the position information, the positioning error, the short-range wireless communication possible distance, and the request ID transmitted from the positioning terminal 6 via the Internet 2 and sends them to the position guarantee database management unit 24.

  Next, storage in the position assurance database 5 is performed (step ST37). That is, the request database management unit 23 extracts the terminal ID corresponding to the request ID received from the positioning terminal 6 and the requested position information from the request database 4 and sends them to the position guarantee database management unit 24. The position guarantee database management unit 24 receives the position information received from the positioning terminal 6, the position positioning error, the short-range wireless communication possible distance, and the position information in addition to the terminal ID and the requested position information sent from the request database management unit 23. Time is added and stored in the position assurance database 5 as one record. FIG. 7 shows how a plurality of records are stored in the position assurance database 5.

  If a record having a terminal ID corresponding to the request ID received from the positioning terminal 6 does not exist in the request database 4, it is determined that this request ID has expired or is an invalid request ID. , Storage in the position assurance database 5 is not performed.

  Next, in the center 3, a position information check is performed (step ST38). That is, the position information check unit 25 determines the validity of the position information of the request terminal 1 from the terminal ID, the requested position information, the position information, the position positioning error, and the short-range wireless communication possible distance stored in the position assurance database 5. Check.

  Here, the contents of the position information check process performed by the position information check unit 25 will be described in detail with reference to FIG. First, the position information sent from the positioning terminal 6, the position positioning error, and the short-range wireless communicable distance stored in the position assurance database 5 are extracted. Then, a circle having a radius r with a value obtained by adding a position positioning error to the short-range wireless communication possible distance is calculated with the position P indicated by the position information as the center. Here, a value obtained by adding a positioning error to the short-range wireless communication possible distance is used as the radius r. However, the radius r does not use the short-range wireless communication possible distance and the positioning error. It can be a certain distance. Further, the radius r can be limited to a short-range wireless communication possible distance without using a positioning error.

  Next, the request position information sent from the request terminal 1 stored in the position guarantee database 5 is extracted. Then, it is checked whether or not the position indicated by the retrieved requested position information is within the previously calculated circle. The fact that various information regarding the position guarantee request by the requesting terminal 1 has been sent from the positioning terminal 6 to the center 3 means that the requesting terminal 1 was within a short distance wireless communication with the positioning terminal 6. If the request position information sent from the request terminal 1 is correct, the position indicated by the request position information should be within the previously calculated circle. For this reason, when the position indicated by the request position information is within the circle as shown by the position a in FIG. 8, it can be determined that the request position information sent from the request terminal 1 is correct, as indicated by the position b. If it is outside the circle, it can be determined that the request position information sent from the request terminal 1 is illegal.

  Note that the position of the request terminal 1 can be guaranteed at this time, and further, the position information check process described above is performed for all the position information transmitted from the positioning terminal 6 to send the request terminal 1. Since the validity of the requested request position information is checked by a plurality of terminals, the credibility can be increased.

  Next, in the center 3, position guarantee is performed (step ST39). That is, the request terminal 1 is in the position indicated by the requested position information at the position information reception time based on the check result obtained by the position information check unit 25 and the position information reception time stored in the position assurance database 5. Guaranteed.

  As described above, according to the position assurance system according to the first embodiment of the present invention, the request position information sent from the request terminal 1 is checked based on the position information sent from the positioning terminal 6. Since configured, the credibility of the request position information sent from the request terminal 1 can be increased.

Embodiment 2. FIG.
FIG. 9 is a block diagram showing the configuration of the position assurance system according to Embodiment 2 of the present invention. This position assurance system is configured by adding a remote terminal 8 to the position assurance system according to the first embodiment. The remote terminal 8 is a part of the positioning terminal 6 and is a terminal in the vicinity of the positioning terminal 6 used for position assurance of the requesting terminal 1. In addition, a peripheral terminal database 7 for storing IDs of terminals in the vicinity of each terminal is added to the center 3.

  FIG. 10 is a block diagram showing a functional configuration of request terminal 1 used in the position assurance system according to the second embodiment. This request terminal 1 is configured by adding a peripheral terminal transmission unit 15 to the request terminal according to the first embodiment shown in FIG. The peripheral terminal transmission unit 15 transmits the terminal ID of the terminal in the vicinity of the request terminal 1 sent from the short-range wireless communication unit 14 to the Internet communication unit 12.

  FIG. 11 is a block diagram showing a functional configuration of the center 3 used in the position assurance system according to the second embodiment. The center 3 is configured by adding a peripheral terminal database management unit 26 and a peripheral terminal check unit 27 to the center according to the first embodiment shown in FIG.

  The peripheral terminal database management unit 26 accesses the peripheral terminal database 7. Specifically, the peripheral terminal database management unit 26, as shown in FIG. 14, receives the terminal ID (own terminal ID), location information, and terminal information of each terminal received from the Internet communication unit 21. The terminal ID is stored in the peripheral terminal database 7 as one record. In addition, the peripheral terminal database management unit 26 sends the terminal ID of each terminal extracted from the peripheral terminal database 7, the position information, and the terminal IDs of terminals around each terminal to the peripheral terminal check unit 27.

  The peripheral terminal check unit 27 is based on the content of the location guarantee database 5 sent from the location guarantee database management unit 24 and the content of the peripheral terminal database 7 sent from the peripheral terminal database management unit 26, It is checked whether there is any inconsistency in the presence of the positioning terminal 6 used for increasing the credibility of the location information of the requesting terminal 1. Details of processing performed in the peripheral terminal check unit 27 will be described later.

  FIG. 12 is a block diagram illustrating a functional configuration of the positioning terminal 6 used in the position assurance system according to the second embodiment. This positioning terminal 6 is configured by adding a peripheral terminal transmission unit 64 to the positioning terminal according to Embodiment 1 shown in FIG. The peripheral terminal transmission unit 64 transmits the terminal ID of the terminal in the vicinity of the positioning terminal 6 sent from the short-range wireless communication unit 63 to the Internet communication unit 62.

  FIG. 13 is a block diagram showing a functional configuration of the remote terminal 8 used in the position assurance system according to the second embodiment. The remote terminal 8 includes a position positioning unit 81, an Internet communication unit 82, a short-range wireless communication unit 83, and a peripheral terminal transmission unit 84.

  The position positioning unit 81 measures its current position. The positioning in the position positioning unit 81 can be performed using, for example, a GPS or a base station. The current current position measured by the position positioning unit 81 is sent to the Internet communication unit 82 as position information.

  The Internet communication unit 82 performs access to the Internet 2 and communication via the Internet 2. Specifically, the Internet communication unit 82 is a terminal in the vicinity of itself that is transmitted from the terminal ID of the own (far terminal 8), the position information transmitted from the position measuring unit 81, and the peripheral terminal transmitting unit 84. Is transmitted to the center 3 via the Internet 2.

  The short-range wireless communication unit 83 performs access to a terminal in the vicinity of itself, communication with the terminal, and search for a terminal that can communicate with the short-range wireless. Specifically, the short-range wireless communication unit 83 receives a terminal ID transmitted from a terminal located in the vicinity of the short-range wireless communication unit 83 by short-range wireless communication, and sends the received terminal ID to the peripheral terminal transmission unit 84. Here, as a terminal ID of a terminal in the vicinity of itself, in addition to a unique ID for identifying the terminal, for example, a telephone number or a mail address, when using this position assurance system, An ID assigned in advance by the provider can be used.

  The peripheral terminal transmission unit 84 transmits the terminal IDs of the terminals in the vicinity of the remote terminal 8 to the Internet communication unit 82. Specifically, the terminal ID of the terminal in the vicinity of the remote terminal 8 sent from the short-range wireless communication unit 63 is sent to the Internet communication unit 82.

  Next, the operation of the position assurance system configured as described above according to the second embodiment of the present invention will be described focusing on the operation when the position of the request terminal 1 is guaranteed.

  In the request terminal 1, the position positioning unit 11 measures its current position at regular time intervals and sends it to the Internet communication unit 12 as position information. In addition, the short-range wireless communication unit 14 searches for a terminal in the vicinity of itself, that is, a terminal communicable by short-range wireless, acquires the terminal ID of the searched terminal, and sends it to the peripheral terminal transmission unit 15. The peripheral terminal transmission unit 15 transmits the terminal ID transmitted from the short-range wireless communication unit 14 to the Internet communication unit 12. The Internet communication unit 12 sends its own terminal ID, the position information sent from the position positioning unit 11, and the terminal IDs of terminals in the periphery sent from the peripheral terminal sending unit 15 to the center 3 via the Internet 2. send.

  In the positioning terminal 6, the position positioning unit 61 measures its current position at regular intervals and sends it to the Internet communication unit 62 as position information. In addition, the short-range wireless communication unit 63 searches for a terminal in the vicinity of itself, that is, a terminal communicable by short-range wireless, acquires the terminal ID of the searched terminal, and sends it to the peripheral terminal transmission unit 64. The peripheral terminal transmission unit 64 sends the terminal ID sent from the short-range wireless communication unit 63 to the Internet communication unit 62. The internet communication unit 62 sends its own terminal ID, location information sent from the location positioning unit 61, and terminal IDs of terminals in the periphery sent from the peripheral terminal sending unit 64 to the center 3 via the Internet 2. send.

  Further, in the remote terminal 8, the position positioning unit 81 measures its own current position at regular time intervals and sends it to the Internet communication unit 82 as position information. Further, the short-range wireless communication unit 83 searches for a terminal in the vicinity of the terminal, that is, a terminal that can communicate by short-range wireless, acquires the terminal ID of the searched terminal, and sends it to the peripheral terminal transmission unit 84. The peripheral terminal transmission unit 84 transmits the terminal ID transmitted from the short-range wireless communication unit 63 to the Internet communication unit 82. The internet communication unit 82 sends its own terminal ID, location information sent from the location positioning unit 81, and terminal IDs of terminals in the vicinity sent from the peripheral terminal sending unit 84 to the center 3 via the Internet 2. send.

  In the center 3, the Internet communication unit 21 receives the terminal ID of each terminal, the position information, and the terminal IDs of terminals in the vicinity of each terminal sent from the request terminal 1, the positioning terminal 6, and the remote terminal 8, The data is sent to the peripheral terminal database management unit 26. The peripheral terminal database management unit 26 stores the received terminal IDs, position information, and terminal IDs of terminals around each terminal as one record in the peripheral terminal database. FIG. 14 shows how records are stored in the peripheral terminal database 7. As shown in FIG. 14, the first column at the beginning of the record stores the terminal ID of the terminal that sent the terminal ID, and the second column stores the location information of the terminal that sent the terminal ID. After the third column, the terminal IDs of terminals around the terminal that has sent the terminal ID are stored.

  When the above process ends, the same operation as the operation of the position assurance system according to the first embodiment described above with reference to the sequence diagram of FIG. 5 is executed. At this time, in the center 3, when the location information check of the request terminal 1 (step ST38 in FIG. 5) is performed, the peripheral terminal check unit 27 includes the request terminal 1 and the positioning terminal 6 (including the remote terminal 8). Check for inconsistencies in existence.

  Here, the details of the check process performed by the peripheral terminal check unit 27 will be described in detail. First, the terminal ID of the requesting terminal 1 stored in the position guarantee database 5 is extracted. Next, among the records stored in the peripheral terminal database 7, the record whose first column is the terminal ID of the requesting terminal 1 is extracted. Next, the terminal IDs of the terminals in the vicinity of the requesting terminal 1 stored in the third and subsequent columns of the extracted record are extracted.

  Next, the first column of all the records stored in the peripheral terminal database 7 is checked, and for those other than the terminal IDs of the terminals in the vicinity of the requesting terminal 1, the requesting terminal 1 of the requesting terminal 1 is included in the third column and thereafter. It is checked whether a terminal ID is included. If the terminal ID of the request terminal 1 is included, the position indicated by the position information of the record is compared with the position indicated by the position information of the request terminal 1, and each terminal ID is performed at each terminal. If it is farther than the distance estimated to be able to move within a certain period of time for taking out and positioning, it can be determined that the request terminal 1 is inconsistent.

  Further, the terminal ID of the terminal located in the periphery of the request terminal 1 is determined by performing the same process as described above for the terminal ID of the terminal in the periphery included in the record whose terminal ID of the request terminal 1 is the first column. Can be ensured, that is, the credibility can be increased, so that the credibility of the position of the requesting terminal 1 can be further increased.

  As described above, according to the position assurance system according to the second embodiment of the present invention, the credibility of the position information sent from the request terminal 1 can be further increased.

It is a figure which shows the structure of the position guarantee system which concerns on Embodiment 1 of this invention. It is a block diagram which shows the functional structure of the request terminal shown in FIG. It is a block diagram which shows the functional structure of the center shown in FIG. It is a block diagram which shows the functional structure of the positioning terminal shown in FIG. It is a sequence diagram for demonstrating operation | movement of the position assurance system which concerns on Embodiment 1 of this invention. It is a figure which shows the request database used with the position guarantee system which concerns on Embodiment 1 of this invention. It is a figure which shows the position guarantee database used with the position guarantee system which concerns on Embodiment 1 of this invention. It is a figure for demonstrating the positional information check process performed with the position guarantee system which concerns on Embodiment 1 of this invention. It is a block diagram which shows the structure of the position guarantee system which concerns on this Embodiment 2 of this invention. It is a block diagram which shows the functional structure of the request terminal shown in FIG. It is a block diagram which shows the functional structure of the center shown in FIG. It is a block diagram which shows the functional structure of the positioning terminal shown in FIG. FIG. 10 is a block diagram showing a functional configuration of the remote terminal shown in FIG. 9. It is a figure which shows the peripheral terminal database used with the position guarantee system which concerns on Embodiment 2 of this invention.

Explanation of symbols

1 request terminal, 2 internet, 3 center, 4 request database, 5 position assurance database, 6 positioning terminal, 7 peripheral terminal database, 8 far terminal, 11, 61, 81 positioning unit, 12, 21, 62, 82 Internet communication , 13 Positioning request unit, 14, 63, 83 Near field communication unit, 15, 64, 84 Peripheral terminal transmission unit, 22 Request ID generation unit, 23 Request database management unit, 24 Location assurance database management unit, 25 Location information Check unit, 26 peripheral terminal database management unit, 27 peripheral terminal check unit.

Claims (5)

A center for position assurance,
A request terminal for requesting the center to guarantee its own position;
A position assurance system comprising a positioning terminal that transmits its own position to the center in response to a request from the requesting terminal;
The request terminal is
A first positioning unit that measures its own position;
A first communication unit that transmits its own position measured by the first position measurement unit to the center;
A first short-range wireless communication unit that transmits a position transmission request for transmitting the position of the positioning terminal to the center to the positioning terminal by short-range wireless;
The positioning terminal is
A second position measurement unit for measuring its own position;
A second short-range wireless communication unit that receives a short-range wireless position transmission request from the request terminal;
A second communication unit that transmits the position measured by the second position measurement unit to the center in response to a position transmission request sent from the second short-range wireless communication unit;
The center is
A position assurance system comprising a position information check unit that performs position assurance by checking the validity of the position received from the request terminal based on the position received from the request terminal and the position received from the positioning terminal. The second communication unit of the positioning terminal further transmits to the center a short-range wireless communicable distance representing a distance that the second short-range wireless communication unit can communicate,
The center position information check unit determines whether the position received from the request terminal is valid depending on whether the position received from the request terminal is within the short-range wireless communication range from the position received from the positioning terminal. The position assurance system according to claim 1, wherein the position assurance is performed by checking. The second communication unit of the positioning terminal further transmits an error of position measurement in the second position measurement unit to the center,
The center position information check unit determines whether the position received from the request terminal is within the range obtained by adding a position measurement error to the short-range wireless communication possible distance from the position received from the positioning terminal. 2. The position assurance system according to claim 1, wherein the position assurance is performed by checking the validity of the received position. The first short-range wireless communication unit of the request terminal transmits a position transmission request for requesting transmission of the position of the positioning terminal to the center to the plurality of positioning terminals by short-range wireless,
The position information check unit of the center performs position guarantee by checking the validity of the position information received from the request terminal based on the position received from the request terminal and the plurality of positions received from the plurality of positioning terminals. The position assurance system according to any one of claims 1 to 3, wherein A center for position assurance,
A request terminal for requesting the center to guarantee its own position;
A position assurance system comprising a positioning terminal that transmits its own position to the center,
The request terminal is
A first positioning unit that measures its own position;
A first short-range wireless communication unit that receives a terminal ID transmitted from the positioning terminal in the vicinity of the self;
A first communication unit that transmits its own position measured by the first position measurement unit and the terminal ID received by the first short-range wireless communication unit to the center;
The positioning terminal is
A second position measurement unit for measuring its own position;
A second short-range wireless communication unit that receives a terminal ID transmitted from the requesting terminal and the positioning terminal located in the vicinity of the device;
A second communication unit that transmits its own position measured by the second position measurement unit and the terminal ID received by the second short-range wireless communication unit to the center;
The center is
Based on the position received from the request terminal and the position received from the positioning terminal, a position information check unit that performs position guarantee by checking the validity of the position received from the request terminal;
And a peripheral terminal checking unit for checking the presence of a consistency of the requesting terminal and the positioning terminal,
The peripheral terminal check unit of the center confirms that there is no request terminal in the vicinity of the “ positioning terminal not in the vicinity of the request terminal ” based on the terminal ID received from the request terminal and the terminal ID received from the positioning terminal. The position assurance system is characterized by checking whether there is any inconsistency in the presence of the request terminal and the positioning terminal .

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