JP2009017217A - Portable terminal position information transmission system and portable terminal position information transmission method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal position information transmission system and a portable terminal position information transmission method for transmitting the position information of a portable terminal to a server device regardless of whether a GPS has been mounted. <P>SOLUTION: The portable terminal 1 transmits position information measured by a GPS to the server device 3, and transmits position information measured by the above terminal to other portable terminal 1 by P2P radio communication when a position information request is transmitted from the other portable terminal 1 by P2P radio communication with the other portable terminal 1. When a position information registration request is transmitted from the other portable terminal 1 after the transmission, position registration information including the measured position information, identification information of the other portable terminal 1, and the identification information, attribute information, and position information flag of the own device is transmitted to the server device 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a portable terminal position information transmission system and portable terminal for transmitting position information of a portable terminal such as a cellular phone or a PHS (Personal Handy-Phone System) to a server device regardless of whether or not GPS (Global Positioning System) is installed. The present invention relates to a position information transmission method.

In recent years, mobile terminals such as mobile phones and PHS have a function of positioning their own position information by GPS and a P2P (Peer to Peer) wireless communication function capable of directly communicating with other mobile terminals without going through a mobile communication network. Have been prepared. Patent Document 1 includes both a position information positioning function and a P2P wireless communication function, obtains position information of the own station (mobile terminal) from the GPS receiver, and determines whether the own station is out of the control area, It is disclosed that communication is performed directly between portable terminals by switching the frequency when out of service area.
JP 2001-95043 A

  By the way, in recent years, there is a danger of a collision between a vehicle driver and a pedestrian through communication between the vehicle and a pedestrian with a mobile terminal using the “disaster message board service with automatic GPS location information notification function” or GPS location information. The importance of GPS location information is increasing, such as “accident prevention services using inter-vehicle communication” to prevent accidents by providing information. However, since positioning of position information is performed by a terminal alone, positioning of position information cannot be performed when radio waves from GPS satellites cannot be received such as indoors, underground, tunnels, etc. Can not be sent to. Even if it can be received, if the radio wave is weak, the error becomes large, and accurate position information cannot be transmitted to the server device. Even if P2P wireless communication is possible, a terminal that does not have a GPS cannot naturally transmit position information to the server device. In order to promote the use of services using GPS location information, such as the “disaster message board service with automatic GPS location information notification function” and the “accident prevention service using inter-vehicle communication” described above, Is required.

  The present invention has been made in view of such a point, and provides a portable terminal position information transmission system and a portable terminal position information transmission method capable of transmitting position information of a portable terminal to a server device regardless of whether GPS is installed or not. The purpose is to provide.

  A mobile terminal location information transmission system according to the present invention includes a server device including a management unit that manages the location of a mobile terminal based on location information transmitted from the mobile terminal through wide-area communication using a mobile communication network, and a GPS. Positioning means for positioning the position information of the apparatus, P2P wireless communication means for performing P2P (Peer to Peer) wireless communication with other mobile terminals, and position information registration means for registering the position information measured by the positioning means in the server apparatus The location information registration means transmits the location information measured by the positioning means to the server device, and a location information request has been sent from another portable terminal by P2P wireless communication. In this case, the position information measured by the positioning means is transmitted to the other portable terminal by the P2P wireless communication means, and the position information is transmitted from the other portable terminal after the position information is transmitted. Information registration request and transmits the position information positioning at least said other of the portable terminal identification information and the positioning unit to the server device when sent.

  According to this configuration, the mobile terminal transmits the position information measured by GPS to the server device, and when a position information request is transmitted from another mobile terminal by P2P wireless communication with the other mobile terminal (that is, When receiving a position information request transmitted from another portable terminal), the position information measured by the own device is transmitted to another portable terminal by P2P wireless communication, and after this transmission, the position information is transmitted from the other portable terminal. When a registration request is transmitted (that is, when a position information registration request transmitted from another portable terminal is received), at least identification information for identifying the other portable terminal and position information measured by the own apparatus are transmitted to the server apparatus. Send.

  Therefore, even if other mobile devices are equipped with GPS, if you cannot receive radio waves from GPS satellites such as indoors, underground, and tunnels, if you can receive them but the radio waves are weak, or if you do not have GPS However, since the position information of the own device (portable terminal) is transmitted to the server device as the position information of the other portable terminal, the other portable terminal is equipped with GPS regardless of whether the other portable terminal is equipped with GPS. Can be registered in the server device. Accordingly, services using GPS location information such as “disaster message board service with automatic GPS location information notification function” and “accident prevention service using inter-vehicle communication” can be popularized.

  In the portable terminal position information transmission system according to the present invention, the portable terminal transmits the position information measured by GPS to the server device, and the position information request is transmitted from the other portable terminal by P2P wireless communication with the other portable terminal. When receiving a position information request transmitted from another portable terminal, the position information measured by the own device is transmitted to another portable terminal by P2P wireless communication, and after this transmission, the other When a location information registration request is transmitted from another mobile terminal (that is, when a location information registration request transmitted from another mobile terminal is received), at least identification information for identifying the other mobile terminal and a position measured by the own device Information is sent to the server device, so even if other mobile terminals are equipped with GPS, radio waves from GPS satellites such as indoors, underground, and tunnels cannot be received or received. Even if the radio wave is weak even if it is received, or even if the GPS is not installed, the position information of the own device (mobile terminal) is transmitted to the server device as the position information of the other mobile terminal. Regardless of whether or not it is installed, the position information of other portable terminals can be transmitted to the server device. As a result, “disaster message board service with automatic GPS position information notification function” and “accident prevention service using inter-vehicle communication” can be spread.

  In the present invention, in the server device, the position of the mobile terminal is managed from the position information transmitted from the mobile terminal by wide area communication using the mobile communication network, and the position information of the own device is obtained by GPS in the mobile terminal. When positioning is performed, P2P (Peer to Peer) wireless communication is performed with another mobile terminal, and the positional information is transmitted to the server device, and a position information request is transmitted from another mobile terminal by P2P wireless communication If the position information registration request is transmitted from the other portable terminal after transmitting the position information to the other portable terminal by P2P wireless communication and transmitting the position information, at least the other portable terminal The identification information and the measured position information are transmitted to the server device.

  In the portable terminal position information transmission system of the present invention, in the portable terminal, the position information registration means transmits a position information request from the P2P wireless communication means, and after the transmission of the position information request, the P2P wireless communication means When the location information is received at, it is preferable to transmit a location information registration request from the P2P wireless communication means to the other portable terminal that has transmitted the location information. According to this configuration, the portable terminal can transmit the position information measured by the portable terminal to the server apparatus as the position information of the own apparatus using another portable terminal.

  In the mobile terminal location information transmission system according to the present invention, in the mobile terminal, the location information registration unit may receive location information when location information is transmitted from a plurality of other mobile terminals in response to the location information request. It is preferable to select a mobile terminal that is accurate and has the strongest received radio wave intensity of P2P wireless communication, and transmit a location information registration request from the P2P wireless communication means to the selected mobile terminal.

  According to this configuration, when the location information is transmitted from a plurality of other mobile terminals that exist in a range where P2P wireless communication is possible, the mobile terminal is closest to the own device and has the strongest received radio wave intensity. Therefore, the position information closest to the position information of the own apparatus can be transmitted to the server apparatus.

  In the mobile terminal location information transmission system of the present invention, in the mobile terminal, the location information registration means may receive the location information from a plurality of other mobile terminals in response to the location information request. Among the other mobile terminals, select a plurality of mobile terminals that have accurate position information and P2P wireless communication reception radio field strength that is equally strong, and perform triangulation from each mobile terminal P2P wireless communication radio field intensity. It is possible to acquire position information by measuring a relative position from a mobile terminal, and transmit the acquired position information together with a position information registration request to the other mobile terminal selected to acquire the position information. preferable.

  According to this configuration, when the mobile terminal receives position information from a plurality of other mobile terminals existing in a range where P2P wireless communication is possible, the position information is accurate and the received radio wave intensity of P2P wireless communication is high. Since a plurality of the same strengths are selected, triangulation is performed from the respective radio field intensities, and the relative position from each portable terminal is measured, accurate position information can be acquired.

  In the portable terminal position information transmission system of the present invention, it is preferable that the position information registration unit transmits position information acquired by triangulation from the own apparatus to the server apparatus using wide area communication.

  According to this configuration, since the mobile terminal transmits the position information acquired by triangulation directly to the server device without passing through another mobile terminal, relatively accurate position information can be obtained regardless of whether or not the GPS is mounted. It can be transmitted to the server device.

  In the portable terminal position information transmission system of the present invention, when the portable terminal has positioning means for positioning the position information of the own apparatus by GPS and the sensitivity of the GPS is extremely low, the position information is transmitted from the P2P wireless communication means. It is preferable to send the request.

  According to this configuration, when the mobile terminal is equipped with GPS, the sensitivity of the GPS is determined as a trigger for transmitting location information using another mobile terminal. This makes it possible to transmit position information using other portable terminals even when radio waves from GPS satellites such as indoors, underground, and tunnels cannot be received or can be received but are weak. The determination of the GPS sensitivity is preferably performed based on, for example, the GPS received signal level or DOP (Dilution Of Precision).

  In the portable terminal position information transmission method of the present invention, in the server device, the step of managing the position of the portable terminal from the position information transmitted from the portable terminal by wide area communication using a mobile communication network, A step of positioning the position information of the own device by GPS, a step of performing P2P wireless communication with another portable terminal, and transmitting the measured position information to the server device; and position information from another portable terminal by P2P wireless communication When the request is transmitted, the measured position information is transmitted to the other portable terminal by P2P wireless communication. After the position information is transmitted, the position information registration request is transmitted from the other portable terminal. And a step of transmitting at least the identification information of the other portable terminal and the measured position information to the server device.

  According to this method, the mobile terminal transmits the position information measured by GPS to the server device, and when a position information request is transmitted from another mobile terminal by P2P wireless communication with the other mobile terminal (that is, When receiving a position information request transmitted from another portable terminal), the position information measured by the own device is transmitted to another portable terminal by P2P wireless communication, and after this transmission, the position information is transmitted from the other portable terminal. When a registration request is transmitted (that is, when a position information registration request transmitted from another portable terminal is received), at least identification information for identifying the other portable terminal and position information measured by the own apparatus are transmitted to the server apparatus. Send.

  Therefore, even if other mobile devices are equipped with GPS, if you cannot receive radio waves from GPS satellites such as indoors, underground, and tunnels, if you can receive them but the radio waves are weak, or if you do not have GPS However, since the position information of the own device (portable terminal) is transmitted to the server device as the position information of the other portable terminal, the other portable terminal is equipped with GPS regardless of whether the other portable terminal is equipped with GPS. Can be registered in the server device. As a result, “disaster message board service with automatic GPS position information notification function” and “accident prevention service using inter-vehicle communication” can be spread.

  In the mobile terminal location information transmission method of the present invention, the mobile terminal transmits a location information request by P2P wireless communication with another mobile terminal, and in response to the transmission of the location information request, the other mobile terminal transmits a P2P radio. It is preferable to include a step of transmitting a position information registration request to the other mobile terminal that has transmitted the position information when the position information transmitted by communication is received.

  According to this method, the portable terminal can transmit the position information measured by the portable terminal to the server apparatus as the position information of the own apparatus using another portable terminal.

  In the mobile terminal location information transmission method of the present invention, when the mobile terminal receives location information from a plurality of other mobile terminals in response to the location information request, the location information is correct and P2P wireless communication is received. It is preferable to select a mobile terminal with the highest radio field intensity and transmit a location information registration request to the selected mobile terminal.

  According to this method, when the location information is transmitted from a plurality of other mobile terminals that exist in a range where P2P wireless communication is possible, the mobile terminal is closest to the own device and has the strongest received radio wave intensity. Therefore, the position information closest to the position information of the own apparatus can be transmitted to the server apparatus.

  In the mobile terminal location information transmission method of the present invention, in the mobile terminal, when location information is transmitted from a plurality of other mobile terminals in response to the location information request, among the plurality of other mobile terminals, Select multiple devices with correct position information and P2P wireless communication reception radio field strength that is equally strong, perform triangulation from each mobile terminal P2P wireless communication radio field strength, and measure the relative position from each mobile terminal Thus, it is preferable to acquire the position information and transmit the acquired position information to the other portable terminal selected to acquire the position information together with the position information registration request.

  According to this method, when the mobile terminal receives position information from a plurality of other mobile terminals existing in a range where P2P wireless communication is possible, the position information is accurate and the received radio wave intensity of P2P wireless communication is high. Since a plurality of the same strengths are selected, triangulation is performed from the respective radio field intensities, and the relative position from each portable terminal is measured, accurate position information can be acquired.

  In the portable terminal position information transmission method of the present invention, it is preferable that the portable terminal transmits position information acquired by triangulation from the own apparatus to the server apparatus using wide area communication.

  According to this method, since the mobile terminal transmits the position information acquired by triangulation directly to the server device without passing through another mobile terminal, relatively accurate position information can be obtained regardless of whether or not the GPS is mounted. It can be transmitted to the server device.

  In the mobile terminal position information transmission method of the present invention, the mobile terminal transmits a position information request when it has positioning means for positioning the position information of its own device with GPS and the sensitivity of the GPS is extremely low. Is preferred.

  According to this method, when the mobile terminal is equipped with GPS, the sensitivity of the GPS is determined as a trigger for transmitting position information using another mobile terminal. This makes it possible to transmit position information using other portable terminals even when radio waves from GPS satellites such as indoors, underground, and tunnels cannot be received or can be received but are weak. It is desirable to determine the sensitivity of GPS based on, for example, the received signal level of GPS or DOP.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a diagram showing a schematic configuration for explaining a portable terminal position information transmission system according to an embodiment of the present invention. The system shown in FIG. 1 mainly includes a mobile terminal 1 and a server device 3 connected to the mobile terminal 1 via a mobile communication network 2.

  The mobile terminal 1 is equipped with a GPS, and can determine the position information of its own device using the GPS. Further, the mobile terminal 1 can transmit and receive information to and from the server device 3 via the mobile communication network 2. The mobile terminal 1 can communicate with another mobile terminal 1 via the mobile communication network 2 and can also communicate with other computers via the mobile communication network 2 and the Internet. The mobile terminal 1 is equipped with a wireless LAN for P2P wireless communication, and can directly communicate with other mobile terminals 1 by P2P wireless communication.

  In addition, the mobile terminal 1 periodically transmits position information measured by GPS to the server device 3. In addition, the mobile terminal 1 checks the GPS sensitivity during reception of GPS radio waves, and if the GPS sensitivity is extremely low, the mobile terminal 1 uses the P2P wireless communication to provide positional information to other mobile terminals 1 in the vicinity. Send the request. Then, the one with the best radio wave condition (hereinafter referred to as a representative terminal) is selected from the nearby mobile terminals 1 that have responded, and requests the selected representative terminal 1 to transmit the position information to the server device 3. At this time, the representative terminal 1 includes the “identification information”, the “identification information”, the “attribute information”, and the “position information flag” of the requesting mobile terminal 1 including the “position information” measured by the own device. Is sent to the server device 3. Note that the GPS sensitivity determination is desirably performed based on, for example, a GPS received signal level or DOP. The location registration information only needs to include at least “location information” and “identification information” of both portable terminals 1.

  The mobile terminal 1 has an operating system (mobile device OS), and a browser function, a viewer function, a JAM (Java (registered trademark) Application Manager) and other functions operate on the mobile device OS.

  The mobile communication network 2 is a network between the mobile terminal 1 and the server device 3. The mobile communication network 2 includes a mobile packet communication network in addition to a normal mobile communication network. The server device 3 manages location information of all the mobile terminals 1 that provide this service.

  In such a system, if a certain mobile terminal 1 cannot receive radio waves from GPS satellites such as indoors, underground, and tunnels, or is in a place where radio waves are weak even if it can be received, the position information obtained by positioning is sent to the server device 3. Since it cannot be transmitted, P2P wireless communication is performed to communicate with the surrounding mobile terminal 1 and request location information. When the location information is transmitted from the surrounding mobile terminal 1 by transmitting the location information request, the mobile terminal 1 is requested to register the location information. The mobile terminal 1 that has transmitted the location information receives the location registration information according to the location information registration ("location information" measured by the own device, "identification information" of the mobile terminal 1 that issued the location registration request, "identification information" of the own device, “Attribute information” and “position information flag”) are transmitted to the server device 3.

  If there are a plurality of mobile terminals 1 that have responded to the location registration request, select the one with the correct position information and the strongest received radio wave intensity of P2P wireless communication, and use that as the representative terminal 1 1 is requested to register location information. The representative terminal 1 transmits the location registration information to the server device 3 in accordance with this location information registration request. In this case, the portable terminal 1 that has requested the position information selects the nearest portable terminal 1 that is closest to the own apparatus and has the strongest received radio wave intensity, and is therefore closest to the position information of the own apparatus. The position information can be transmitted to the server device 3.

  FIG. 2 is a block diagram showing a schematic configuration of the mobile terminal 1 shown in FIG. Note that the configuration shown in FIG. 2 is simplified for the purpose of describing the present invention, and is assumed to include components mounted on a normal mobile terminal.

  The portable terminal 1 directly communicates with other portable terminals 1 through P2P wireless communication, a control unit 11 that controls the entire apparatus, a communication control unit 12 that communicates with the server device 3 via the mobile communication network 2, and P2P wireless communication. A P2P communication control unit 13 for performing communication, an input unit 14 for inputting various data, a display unit 15 for displaying various data and position information, a GPS device 16 for positioning the position information of its own device, It is mainly composed of an application control unit 17 that activates various installed or downloaded applications.

  The communication control unit 12 transmits the position information of the own device to the server device 3. The P2P communication control unit 13 performs P2P wireless communication with all other portable terminals 1 in a communicable range. The GPS device 16 detects the current position (latitude, longitude) of the mobile terminal 1 with a predetermined accuracy using a GPS satellite (not shown). The GPS device 16 outputs the measured position information to the display unit 14. The application control unit 17 activates a mobile terminal position information transmission application that is mounted on the device or downloaded. This mobile terminal location information transmission application for the mobile terminal 1 checks the reception level (dBm) or DOP during the reception of GPS radio waves, and uses P2P wireless communication when the GPS sensitivity becomes extremely low. This is an application that makes a location information request to another mobile terminal 1 and requests the peripheral mobile terminal 1 that has responded to the location information request to transmit the location information to the server device 3.

  In addition, in this portable terminal location information transmission application, when there are responses from a plurality of portable terminals 1 in response to the transmission of the location information request, the location information is correct and the radio wave condition is the best. A process of selecting the representative terminal 1 and requesting the representative terminal 1 to transmit the position information to the server device 3 is also included. In addition, the mobile terminal location information transmission application includes processing when a location information request is received. That is, when a position information request transmitted from another portable terminal 1 is received, position information measured by the own device is transmitted, and a position information registration request transmitted from another portable terminal 1 is received in response to this transmission. , Location registration information (“location information” measured by the own device, “identification information” of the mobile terminal 1 that issued the location registration request, “identification information”, “attribute information”, “position information flag” of the own device) Transmit to device 3.

  FIG. 3 is a block diagram showing a schematic configuration of the server apparatus 3 shown in FIG. Note that the configuration shown in FIG. 3 is simplified to explain the present invention, and it is assumed that the components mounted on a normal server device are provided.

  The server device 3 manages the position of the mobile terminal 1 for each specific area, the control unit 31 that controls the entire device, the communication control unit 32 that communicates with the mobile terminal 1 via the mobile communication network 2. An area information database (DB) 33 and an application control unit 34 that activates various applications that are installed in the apparatus or downloaded.

  The communication control unit 32 receives the position information of the mobile terminal 1. The area information DB 33 is a database that manages the position of the mobile terminal 1 in a specific area. The area information DB 33 has a management table as shown in FIG. In the management table shown in FIG. 4, in a specific area (area A), portable terminals (terminal 1A, terminal 1B, terminal 1C, terminal 1D,...) Are managed together with position information (latitude, longitude). In the area information DB 33, attribute information and identification information are included in the information sent from the mobile terminal 1, and such attribute information and identification information are also managed. The management items and management methods in the management table shown in FIG. 4 are not limited to this, and various changes can be made. As shown in FIG. 4, the area information DB 33 manages the position of the mobile terminal 1 in a specific area while sequentially updating it. The application control unit 34 activates a location information management application installed in the device or downloaded. This location information management application manages location information from the mobile terminal 1.

Next, the portable terminal location information transmission method according to the embodiment of the present invention will be described with reference to FIG.
In the portable terminal position information transmission method of the present invention, the server device 3 manages the position of the portable terminal 1 based on the position information transmitted from the portable terminal 1 in the wide area communication using the mobile communication network 2, In the terminal 1, the position information of its own device is measured by GPS, and the position information is transmitted to the server device 3, and P2P wireless communication is performed with the other mobile terminal 1. When an information request is transmitted, the measured position information is transmitted to another portable terminal 1 by P2P wireless communication. After the position information is transmitted, a position information registration request is transmitted from the other portable terminal 1. If the location registration information is transmitted to the server device 3 while the location information cannot be transmitted to the server device 3 or if the radio wave is weak even if it can be received, When a position information request is transmitted by P wireless communication and the position information is transmitted from another portable terminal 1 by P2P wireless communication in response to the position information request, to the other portable terminal 1 that has transmitted the position information. A location information registration request is transmitted.

  A mobile terminal location information transmission application is activated in each application control unit 16 of each mobile terminal 1, a location information management application is activated in the server device 3, and each mobile terminal 1 periodically transmits location information to the server device 3. Assuming that the server device 3 is managing the position information from each portable terminal 1, the subsequent operation will be described.

  The control unit 11 of the portable terminal 1A confirms the GPS sensitivity based on the reception level (dBm) or DOP of the GPS device 16, and when the GPS sensitivity is remarkably lowered, the P2P communication control unit 13 performs P2P wireless communication. Then, it sequentially communicates with the surrounding mobile terminals 1B to 1D to request location information (ST1 to ST3). In the mobile terminals 1 </ b> B to 1 </ b> D, each control unit 11 receives the position information request from the mobile terminal 1 </ b> A by the P2P communication control unit 13, acquires the position information from the GPS device 16, and passes through the P2P communication control unit 13. The position information is transmitted to the mobile terminal 1A (ST4 to ST6). In the portable terminal 1A, when the control unit 11 receives the position information transmitted from the portable terminals 1B to 1D by the P2P communication control unit 13, the portable terminal has the highest position information and the strongest received radio wave intensity of P2P wireless communication. 1 is selected as the representative terminal. Here, the mobile terminal 1C is assumed to be a representative terminal.

  In the portable terminal 1A, when the representative terminal 1C is selected, the control unit 11 performs P2P wireless communication by the P2P communication control unit 13, communicates with the representative terminal 1C, and makes a location information registration request (ST7). In the representative terminal 1C, when the control unit 11 receives the position information registration request transmitted from the portable terminal 1A by the P2P communication control unit 13, the control unit 11 acquires the position information from the GPS device 16, and acquires the “position information” Location registration information including “identification information” of the mobile terminal 1A that is the registration request source, “identification information” of the own device (representative terminal 1C), “attribute information”, and “location information flag” is sent to the server device 3. Transmit (ST8). In the server device 3, when receiving the location registration information transmitted from the portable terminal 1A by the P2P communication control unit 13, the control unit 31 stores it in the area information DB 33 (ST9). In this case, since the position information of the mobile terminal 1A is transmitted to the server device 3 as the position information of the mobile terminal 1C, the same value is registered in the area information DB 33 for the mobile terminal 1A and the mobile terminal 1C. As shown in FIG. 4, the “latitude” and “longitude” of the mobile terminal 1A and the mobile terminal 1C are the same.

  As described above, in the portable terminal position information transmission system according to the present embodiment, the portable terminal 1 transmits the position information measured by the GPS to the server device 3, and by P2P wireless communication with the other portable terminals 1, When a position information request is transmitted from another portable terminal 1, the position information measured by the own device is transmitted to the other portable terminal 1 by P2P wireless communication, and after this transmission is performed, from the other portable terminal 1 When the position information registration request is transmitted, the measured “position information”, “identification information” of the other mobile terminal 1, “identification information” of the own device, “attribute information”, and “position information flag” ”Is sent to the server device 3.

  Therefore, even if the other mobile terminal 1 is equipped with GPS, it can be measured by its own device 1 even if it cannot receive radio waves from GPS satellites such as indoors, underground, and tunnels, or it can receive but is weak. Since the position information is transmitted to the server apparatus 3 as the position information of the other mobile terminal 1, the position information of the mobile terminal 1 can be registered in the server apparatus 3.

  In the embodiment described above, all the mobile terminals 1 have GPS, but even when they do not have GPS, it is possible to request the mobile terminal 1 having GPS to transmit position information. This makes it possible to transmit the location information of the mobile terminal 1 to the server device 3 regardless of whether or not the GPS is installed, and “disaster message board service with automatic GPS location information notification function” or “accidents using human-vehicle communication” Prevention service ".

  Moreover, even if it does not have GPS, a plurality of mobile terminals 1 that have responded to the location information request are selected so that the location information is accurate and the received radio wave intensity of P2P wireless communication is comparable. Then, triangulation is performed from the radio wave intensity of the P2P wireless communication of each mobile terminal, the position information is obtained by measuring the relative position from each mobile terminal, and the server apparatus 3 directly or indirectly acquires the obtained position information. It is also possible to send to. In this case, direct transmission is transmission using wide area communication, and indirect communication is transmission using another portable terminal 1 by P2P wireless communication. By using triangulation, position information with relatively high accuracy can be obtained.

  The present invention is not limited to the above-described embodiment, and can be implemented with various modifications. For example, the processing unit and the processing procedure can be changed as appropriate without departing from the scope of the present invention. Other modifications can be made without departing from the scope of the present invention.

  The present invention is applicable to a mobile communication system including a mobile terminal and a server device that manages location information of the mobile terminal.

It is a figure which shows schematic structure of the portable terminal location information transmission system which concerns on embodiment of this invention. It is a block diagram which shows schematic structure of a GPS loading terminal with the portable terminal in the system shown in FIG. It is a block diagram which shows schematic structure of the server apparatus in the system shown in FIG. It is a figure which shows the example of the management table in the area information database of a server apparatus. It is a sequence diagram for demonstrating the portable terminal location information transmission method which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile terminal 2 Mobile communication network 3 Server apparatus 11, 31 Control part 12, 32 Communication control part 13 P2P communication control part 14 Input part 15 Display part 16 GPS apparatus 17, 34 Application control part 33 Area information DB

Claims (12)

  A server device comprising a management means for managing the position of the portable terminal from position information transmitted from the portable terminal by wide-area communication using a mobile communication network; a positioning means for positioning the position information of the own apparatus by GPS; A P2P wireless communication means for performing P2P (Peer to Peer) wireless communication with the mobile terminal, and a mobile terminal provided with position information registration means for registering position information measured by the positioning means in the server device, The position information registration means transmits the position information measured by the positioning means to the server device, and the position information measured by the positioning means when a position information request is transmitted from another portable terminal by P2P wireless communication. This is rare when a position information registration request is transmitted from the other portable terminal after the position information is transmitted to the other portable terminal by the P2P wireless communication means. Both the mobile terminal location information transmission system characterized by transmitting the position information positioning by the positioning means and the identification information of the other mobile terminal to the server apparatus.   In the portable terminal, the location information registration unit transmits a location information request from the P2P wireless communication unit, and after the location information request is transmitted, the location information is received by the P2P wireless communication unit. 2. The mobile terminal location information transmission system according to claim 1, wherein a location information registration request is transmitted from the P2P wireless communication means to another mobile terminal that has transmitted information.   In the mobile terminal, the location information registration means is accurate when the location information is transmitted from a plurality of other mobile terminals in response to the location information request, and the received radio wave intensity of P2P wireless communication is the highest. The mobile terminal position information transmission system according to claim 1 or 2, wherein a strong mobile terminal is selected, and a position information registration request is transmitted from the P2P wireless communication means to the selected mobile terminal.   In the mobile terminal, the location information registering unit is configured so that when the location information is transmitted from a plurality of other mobile terminals in response to the location information request, the location information is accurate among the plurality of other mobile terminals. In addition, select a plurality of P2P wireless communication reception radio field strengths that are equally strong, perform triangulation from each mobile terminal P2P wireless communication radio field intensity, and measure the relative position from each mobile terminal. The information is acquired, and the acquired position information is transmitted together with the position information registration request to the other portable terminal selected to acquire the position information. Mobile terminal location information transmission system.   5. The portable terminal position information transmission system according to claim 4, wherein the position information registration means transmits position information acquired by triangulation from the own apparatus to the server apparatus using wide area communication.   2. The position information request is transmitted from the P2P wireless communication means when the portable terminal has positioning means for measuring the position information of its own apparatus by GPS and the sensitivity of the GPS is extremely low. The mobile terminal position information transmission system according to claim 5.   In the server device, a step of managing the position of the portable terminal from the position information transmitted from the portable terminal by wide-area communication using a mobile communication network, and a step of positioning the position information of the own device by GPS in the portable terminal And a step of performing P2P (Peer to Peer) wireless communication with another portable terminal, and the position information obtained by positioning is transmitted to the server device, and a position information request has been transmitted from another portable terminal by P2P wireless communication. If the position information registration request is transmitted from the other portable terminal after transmitting the position information to the other portable terminal by P2P wireless communication and the position information is transmitted, at least the other portable terminal And a step of transmitting the identification information and the measured position information to the server device.   When the mobile terminal transmits a location information request by P2P wireless communication with another mobile terminal and receives location information transmitted from the other mobile terminal by P2P wireless communication in response to the transmission of the location information request. The mobile terminal location information transmitting method according to claim 7, further comprising a step of transmitting a location information registration request to the other mobile terminal that has transmitted the location information.   In the portable terminal, when position information is transmitted from a plurality of other portable terminals in response to the position information request, a portable terminal having the correct position information and the highest received radio wave intensity of P2P wireless communication is selected and selected. The mobile terminal location information transmission method according to claim 7 or 8, wherein a location information registration request is transmitted to the mobile terminal.   In the mobile terminal, when location information is transmitted from a plurality of other mobile terminals in response to the location information request, the received radio wave intensity of the P2P wireless communication is correct among the plurality of other mobile terminals. Select multiple items that are equally strong, perform triangulation from the radio field strength of each mobile terminal's P2P wireless communication, and obtain the location information by measuring the relative position from each mobile device. 9. The mobile terminal position information transmission method according to claim 7, wherein the information is transmitted together with a position information registration request to the other mobile terminal selected to acquire the position information.   The mobile terminal position information transmission method according to claim 10, wherein the mobile terminal transmits position information acquired by triangulation from the own apparatus to the server apparatus using wide area communication.   12. The position information request is transmitted when the portable terminal has positioning means for positioning the position information of the own device by GPS and the sensitivity of the GPS is extremely low. The mobile terminal location information transmission method according to any one of the above.

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