JP2008227685A - Relative position specification system, terminal, method, and program of portable communication terminal, and portable communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To specify a position relative to a partner under an indoor/outdoor field environment which is outside a base station sphere and where a GPS or the like cannot show its full performance. <P>SOLUTION: In a portable communication terminal 200B cooperating an investigator side, an azimuth measured by a compass 260 with respect to a maximal signal intensity measured by radio beacon transmission and reception parts 211, 222, and 220 and an absolute position of its own station measured by GPS measurement parts 208 and 209 are transmitted to a portable communication terminal 200A on the investigator side via radio transmission and reception parts 211 and 210. In the portable communication terminal on the investigator side, a radio beacon is transmitted to a portable communication terminal 200X on the investigated side, and according to the azimuth measured by the compass with respect to the maximum signal intensity measured by the radio beacon transmission and reception part, the absolute position of its own station measured by the GPS measurement part, the azimuth received from the portable communication terminal 200B for cooperating with the investigator side, and the absolute position of its own station, a relative position with respect to the portable communication terminal on the investigated side is specified and displayed on the basis of the principle of triangulation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a relative position specifying system for a mobile communication terminal that performs a position search of an opponent. In particular, the present invention relates to a relative position specifying system, method, program, and portable communication terminal for a portable communication terminal that can search for the position of the other party indoors or outside a base station area.

  Although conventional GPS (Global Positioning System) and radio waves from base stations are used to locate the other party that has a wireless communication terminal such as a lost child, a lost person, and a deceased, For example, when the wireless communication terminal is located inside a large-scale retail store or outside the base station area of an outdoor field including a forest, there is a problem that the wireless communication terminal cannot be used or accuracy cannot be obtained.

For this reason, it should be possible to provide a means by which the relative position of the other party with the wireless communication terminal can be specified even in an environment where GPS or the like cannot demonstrate sufficient capability and it is difficult to see each other, such as indoor and outdoor fields outside the base station area. There are challenges.
In relation to the above, there are the following conventional techniques.

Conventionally, in order to provide the searcher with the relative position information of the search target person and the searcher, the searcher A calls the position information notification device administrator, requests the position information notification of the search target person, The notification device administrator specifies the location of the searcher A by the location search method using the mobile phone base station, and the location information notification device administrator calculates the orientation (θa1) of the search target viewed from the searcher A. Then, the direction transmitted to the searcher A is displayed on the mobile device of the searcher A, and the searcher B also performs a search activity in a place different from the searcher A, and the position information notification device In some cases, the coordinates of the person to be searched can be obtained by calling the administrator, obtaining the direction θb1 of the person to be searched, and the searcher A and the searcher B obtaining the intersection of the extension lines of the respective directions ( For example, see Patent Document 1).
However, in the above-mentioned Patent Document 1, the relative position information between the search target person and the search person is provided to the search person. However, GPS or the like cannot exhibit sufficient capability, and the environment is indoors or outdoors outside the base station area. It is not a wireless communication terminal that specifies a relative position with respect to the other party.

In addition, in a conventional mobile phone device in which the use of a map is difficult, since the location of the other party can be easily notified without using a map, and both sides of the call can know each other's location. GPS communication unit for detecting the position, telephone communication unit for receiving the position information of the communication partner device, display unit, direction sensor for detecting the direction, the position of the own device detected by the GPS communication unit and the telephone communication means And a control circuit that calculates the direction of the call partner device from the own device based on the position information of the call partner device and displays the direction of the call partner device on the display unit in accordance with the direction detected by the direction sensor. Yes (see, for example, Patent Document 2).
However, in the above-mentioned Patent Document 2, the location of the other party is easily notified based on GPS information. However, GPS and the like cannot perform sufficiently, and the environment is indoors or outdoors outside the base station area. It is not a wireless communication terminal that specifies a relative position with respect to the other party.

In addition, the location of the victims on the map has been identified, and in combination with the surrounding 3D map information, information on the topography around the disaster area has been provided to the rescue team as quickly as possible to ensure early rescue and safety of rescue activities. In order to provide a location and search support system for victims to be useful, they are installed in small aircraft such as helicopters and receive radio waves emitted from any of the victim's mobile phones, wireless communication devices, radio beacons, A receiving device for obtaining the azimuth and depression / elevation angle of the victim, and a data transmission device that is mounted on a small aircraft, and that transmits the position data of GPS and the azimuth and elevation / elevation angle of the victim to the ground station A ground station data processing device that obtains the exact latitude, longitude, and altitude data of the victim by means of the position specifying means from the transmitted position data and the azimuth and depression / elevation angle of the victim, There is also a display / transmission device that displays the latitude, longitude, and altitude data of the distress obtained by the data processing on a three-dimensional map and returns it to a small aircraft and displays it on the GPS-MAP on the aircraft ( For example, see Patent Document 3).
However, in the above-mentioned patent document 3, the position of the victim on the map is specified, and the information is provided to the rescue team etc. as soon as possible in combination with the surrounding 3D map information. However, GPS is sufficient. It is not a wireless communication terminal that cannot demonstrate its capability and specifies a relative position with respect to a partner in an indoor or outdoor field environment outside the base station area.

Conventionally, in order to make the player easily recognize not only the distance to the target but also the direction of the target, the mobile phone terminal provides the data server with information on the position of the player and the direction in which the player is facing. The data server transmits the corrected position information after the correction of the player, the distance information from the position of the player to the target, and the direction in which the player is facing based on the information on the position and the direction of the player from the mobile phone terminal. Direction information indicating the angle of the target is distributed to the mobile phone terminal, and the mobile phone terminal may display corrected position information, distance information, and direction information distributed from the data server (see, for example, Patent Document 4). ).
However, in Patent Document 4 described above, the player can easily recognize not only the distance to the target but also the direction of the target, but the GPS and the like cannot be fully used, and are indoors outside the base station area. It is not a wireless communication terminal that specifies a relative position with respect to a partner in an outdoor field environment.

In addition, in a conventional position detection system for detecting the position of a terminal in a wireless communication system, the position detection time is reduced in a position detection method for obtaining signal arrival times between a plurality of base stations around the terminal and the terminal by the principle of triangulation. For this purpose, a database in which received power information of signals transmitted between a plurality of base stations around the terminal and the terminal is associated with the terminal position information is created, and the database is searched from the received power information obtained at the time of position detection. The position detection time can be shortened by using the result of the means for which the position information was obtained early by processing the means for obtaining the position information and the means for obtaining the position using the signal arrival time in parallel. In addition, the received power information is used to narrow down the solution search range when calculating the position using the signal arrival time. Also, the position detection using the signal arrival time difference is used. In correspondence of the positional information and the reception power information calculated by recording in a database, there is also automatically what database is created and updated is made (e.g., see Patent Document 5).
However, in Patent Document 5, the signal arrival time between a plurality of base stations around the terminal and the terminal is obtained by the principle of triangulation. However, GPS or the like cannot exhibit sufficient capability, and indoor and outdoor fields outside the base station area It is not a wireless communication terminal that specifies a relative position with respect to the other party in the environment.

Conventionally, a plurality of antennas are connected to one or both of the transmitting means and the receiving means, and the plurality of antennas are switched or combined while the receiving means is receiving high-frequency signals transmitted from the transmitting means. When a change is made, by detecting in real time a change in timing, amplitude, frequency or phase of the high frequency signal received by the receiving means, or a combination thereof, the direction of the transmitting means and the direction of the transmitting means and the receiving means The present invention relates to an active tag device that can detect a distance with high accuracy. The directional antenna of the receiving means faces the direction of the directional antenna of the transmitting means, and the directional antenna is switched while the transmitting means is transmitting a high-frequency signal. Sometimes the timing, amplitude, frequency or phase of the received high frequency signal It is also intended to detect the distance of these changes in the combination detected in real time, detect the direction in which the transmitting means is located the transmitting means and the receiving means (for example, see Patent Document 6).
However, in Patent Document 6 above, the direction in which the transmission means is located and the distance between the transmission means and the reception means can be detected with high accuracy, but the GPS or the like cannot exhibit sufficient capability, and the indoor and outdoor fields outside the base station area It is not a wireless communication terminal that specifies a relative position with respect to the other party in the environment.

Conventionally, in order to provide a magnetic information providing system for providing information while amusement for customers using a portable terminal such as a mobile phone equipped with a magnetic sensor in treasure hunting or orienteering at amusement facilities such as amusement parks, Customers participating in the treasure hunt in the facility are moving while checking the direction using a mobile terminal equipped with a magnetic sensor that displays the direction, and the underground coil transmits code information by a magnetic field When the customer approaches the coil, the mobile terminal detects the magnetic field from the coil, obtains code information by analyzing the magnetic field, and displays it to the customer (for example, see Patent Document 7).
However, in Patent Document 7, the mobile terminal that displays the azimuth moves while checking the azimuth, but the GPS or the like cannot perform sufficiently, and the environment is indoors or outdoors outside the base station area. It is not a wireless communication terminal that specifies a relative position with respect to the other party.

Conventionally, in order to appropriately perform labor management for a salesperson who moves outside the company, wireless signals of a predetermined frequency transmitted from a moving body moving in the tracking target area are transmitted from the above-described wireless signals from all positions in the area. The signal is received by one or more omnidirectional antennas installed in the area so as to be able to receive the signal, thereby roughly capturing the transmission position of the radio signal, and then two or more directivities. Detecting the direction in which the electric field strength is maximized while rotating the antenna, and by applying the principle of triangulation method, the position of the mobile object is determined by determining the transmission position of the radio signal (See, for example, Patent Document 8).
However, in the above-mentioned Patent Document 8, a radio signal from a moving body is detected by detecting the direction in which the electric field strength is maximized while rotating two or more directional antennas installed in the area. Applying the principle of triangulation method to determine the transmission position of the radio signal, but GPS and so on can not fully demonstrate the ability to identify the relative position to the opponent in the indoor and outdoor field environment outside the base station area It is not a wireless communication terminal.

Also, conventionally, at least two or more base stations detect the direction of the mobile communication body and transmit it to the mobile communication body. The mobile communication body determines the current position on the map information from the received direction and the position information of the base station. For the purpose of calculation and notification output, the mobile phone transmits an azimuth measurement request signal to the first base station, makes an azimuth measurement request, and the first base station measures the direction of the mobile phone and displays it on the map. , And transmits the azimuth and its own ID code to the mobile phone. The mobile phone then makes a direction measurement request to the second base station in the same manner, and the second base station When transmitting its own ID code, based on the direction data and ID code from the first base station and the second base station, the position information and map information of each base station corresponding to the ID code stored in advance To calculate the current location of the mobile phone from It was determined as the current position on a map, some display output to the display unit (for example, see Patent Document 9).
However, in the above-mentioned Patent Document 10, the orientation of the mobile communication body is detected by two or more base stations and transmitted to the mobile communication body. The mobile communication body uses the received orientation and the position information of the base station to display the map information. The current position is calculated and the calculated current position is confirmed as the current position on the map and displayed, but the GPS cannot be fully used, and it is in an indoor or outdoor field environment outside the base station area. It is not a wireless communication terminal that specifies a relative position with respect to the other party.

Further, conventionally, in order to provide a radio wave detection method capable of detecting radio waves from a directional antenna on the transmission side in a short time even when the transmission side and the reception side do not exist on the same plane, Using the position on the transmitting side input through the telephone, the direction of the directional antenna on the transmitting side is calculated based on the position and orientation on the receiving side measured by the receiving side, and the direction of the directional antenna on the receiving side is calculated. In some cases, a radio wave from a transmitting directional antenna is detected (for example, see Patent Document 10).
However, in the above-mentioned Patent Document 1, the radio wave from the directional antenna on the transmission side can be detected, but the GPS or the like cannot exhibit sufficient capability, and it is relative to the other party in the indoor / outdoor field environment outside the base station area. It is not a wireless communication terminal that specifies a position.

JP 2002-027527 A JP 2003-032719 A JP 2004-317244 A JP 2004-354315 A JP 2005-123661 A JP 2006-023261 A JP 2006-038750 A Japanese Patent Laid-Open No. 01-114127 Japanese Patent Laid-Open No. 05-297098 Japanese Patent Laid-Open No. 08-191266

  Therefore, in view of the above problems, the present invention is not able to demonstrate sufficient capability of GPS or the like, and the relative position of the mobile communication terminal that specifies the relative position with respect to the other party in the indoor / outdoor field environment outside the base station area An object is to provide a specific system, method, program, and portable communication terminal.

  In order to solve the above problems, the present invention relates to a mobile communication terminal on the investigation side that transmits a wireless beacon in response to a request in a relative position specifying system of a mobile communication terminal that specifies the relative position of a partner, Rotate two antennas separated by 1/2 of the carrier frequency wavelength to measure the signal strength of the wireless beacon, measure the direction of the mobile communication terminal on the investigation side, and measure the absolute position of the local station with GPS , Requesting the wireless communication beacon to be sent to the investigation side mobile communication terminal and the investigation side mobile communication terminal, against the rotation of two antennas separated by 1/2 the wavelength of the wireless beacon carrier frequency The signal strength of the wireless beacon is measured, the direction of the mobile communication terminal on the investigation side is measured with respect to the measured maximum signal strength, the absolute position of the own station is measured by GPS, the measurement direction, the measurement own station Absolute And the mobile phone on the investigation side that identifies and displays the relative position with respect to the mobile communication terminal on the investigation side on the principle of triangulation from the reception direction received from the mobile communication terminal that cooperates with the investigation side and the absolute position of the reception own station A relative position specifying system for a mobile communication terminal comprising a communication terminal is provided.

Further, the mobile communication terminal on the investigation side is a relative position of the mobile communication terminal on the investigation side on the map, the position of the mobile communication terminal on the investigation side, and the mobile communication terminal that cooperates on the investigation side. The position and the position of the mobile communication terminal on the investigation side are displayed.
Further, the present invention relates to a method for specifying a relative position of a mobile communication terminal for specifying a relative position of an opponent, a step of requesting transmission of a wireless beacon from a mobile communication terminal on an investigation side to a mobile communication terminal on an investigation side, A step of transmitting a wireless beacon in response to a request from a mobile communication terminal on the investigation side, and a wireless communication from the mobile communication terminal on the investigation side to the mobile communication terminal performing cooperation on the investigation side from the mobile communication terminal on the investigation side The signal strength of the radio beacon is measured with respect to the rotation of two antennas separated by ½ of the wavelength of the radio beacon carrier frequency at the portable communication terminal that cooperates with the investigation side to request monitoring of the beacon. , Measure the direction of the mobile communication terminal on the investigation side with respect to the measured maximum signal strength, measure the absolute position of the own station by GPS, the measurement direction, the absolute position of the measurement on the mobile communication terminal of the investigation side To the mobile communication terminal of the investigating side, and rotating the two antennas separated by ½ of the wavelength of the carrier frequency of the wireless beacon to measure the signal strength of the wireless beacon and Measuring the orientation of the terminal, measuring the absolute position of the own station with GPS, receiving the measurement orientation and the measured absolute position from the mobile communication terminal that cooperates on the investigation side, and the mobile communication terminal on the investigation side Based on the principle of triangulation from the measurement orientation received from the mobile communication terminal that cooperates on the investigation side, the measurement orientation of the mobile communication terminal on the investigation side, relative to the mobile communication terminal on the investigation side And a step of specifying and displaying a position. A method for specifying a relative position of a mobile communication terminal is provided.

Further, according to the present invention, the mobile communication terminal on the investigation side cooperates the position of the mobile communication terminal on the investigation side and the investigation side as a relative position of the mobile communication terminal on the investigation side on the map. The position of the portable communication terminal and the position of the investigation-side portable communication terminal are displayed.
Further, the present invention provides a procedure for requesting transmission of a wireless beacon from an investigation-side mobile communication terminal to an investigation-side mobile communication terminal in a program for performing relative position specification of a mobile communication terminal that specifies a relative position of a partner. , A procedure for sending a wireless beacon in response to a request from the mobile communication terminal on the investigation side, and a mobile communication terminal on the investigation side with respect to the mobile communication terminal that cooperates on the investigation side from the mobile communication terminal on the investigation side Requesting the monitoring of the wireless beacon from the wireless beacon and the signal strength of the wireless beacon with respect to the rotation of the two antennas separated by ½ of the wavelength of the wireless beacon carrier frequency in the mobile communication terminal cooperating with the investigation side Measure the azimuth of the mobile communication terminal on the investigation side with respect to the measured maximum signal strength, measure the absolute position of the own station with GPS, and determine the measurement azimuth and absolute position of the search. Transmitting to the mobile communication terminal on the side, and measuring the signal strength of the radio beacon by rotating two antennas separated by half the wavelength of the carrier frequency of the radio beacon at the mobile communication terminal on the investigation side Measure the direction of the mobile communication terminal on the investigation side, measure the absolute position of its own station with GPS, and receive the measurement direction and the absolute measurement position from the mobile communication terminal that cooperates with the investigation side, In the mobile communication terminal, based on the principle of triangulation from the measurement orientation, the measurement absolute position, the measurement absolute position, the measurement orientation received from the mobile communication terminal that cooperates with the investigation side, the investigation side mobile communication terminal There is provided a program for specifying relative position of a mobile communication terminal, comprising a procedure for specifying and displaying a relative position with respect to the mobile communication terminal.

Further, the mobile communication terminal on the investigation side is a relative position of the mobile communication terminal on the investigation side on the map, the position of the mobile communication terminal on the investigation side, and the mobile communication terminal that cooperates on the investigation side. The position and the position of the mobile communication terminal on the investigation side are displayed.
Furthermore, the present invention provides a mobile communication terminal that identifies the relative position of the other party, a GPS measurement unit that measures the absolute position of its own station with GPS, a wireless transmission / reception unit that transmits and receives wirelessly with other mobile communication terminals, An azimuth meter that measures azimuth relative to the rotation of the mobile communication terminal, two antennas that transmit and receive wireless beacons and are spaced apart by half the wavelength of the carrier frequency of the wireless beacon, and the mobile communication terminal on the investigation side Then, a wireless beacon is transmitted from one of the two antennas upon request, and the mobile communication terminal that cooperates with the investigation side receives from the two antennas with respect to the rotation of the mobile communication terminal that cooperates with the investigation side. The signal strength is measured from the phase difference of the signal of the wireless beacon, and the mobile communication terminal on the investigation side requests the mobile communication terminal on the investigation side to transmit a wireless beacon, and the mobile phone on the investigation side A wireless beacon transmission / reception unit that measures the signal strength from the phase difference between the signals of the wireless beacons received from the two antennas with respect to rotation of the communication terminal; The azimuth measured by the azimuth meter with respect to the maximum measured signal strength, the absolute position of the own station measured by the GPS measurement unit, to the mobile communication terminal on the investigation side via the wireless transmission / reception unit Transmitted, in the mobile communication terminal on the investigation side, the direction measured by the compass with respect to the maximum signal strength measured by the wireless beacon transmission / reception unit, the absolute position of the own station measured by the GPS measurement unit, Relative to identify and display the relative position to the mobile communication terminal on the investigation side based on the principle of triangulation from the azimuth received from the mobile communication terminal that cooperates with the investigation side, the absolute position of the own station To provide a mobile communication terminal; and a location identification unit.

Further, the mobile communication terminal on the investigation side is a relative position of the mobile communication terminal on the investigation side on the map, the position of the mobile communication terminal on the investigation side, and the mobile communication terminal that cooperates on the investigation side. The position and the position of the mobile communication terminal on the investigation side are displayed.
Further, the mobile communication terminal on the investigation side uses the two antennas as one antenna, and the compass is deleted.
Further, the two antennas and the wireless beacon transmission / reception unit are shared with those used for a wireless LAN.

As described above, according to the present invention, the investigation-side portable communication terminal requests the investigation-side portable communication terminal to send a wireless beacon, and the investigation-side portable communication terminal requests the wireless beacon in response to the request. A mobile communication terminal that cooperates on the investigation side from the mobile communication terminal on the investigation side, requests monitoring of the wireless beacon from the portable communication terminal on the investigation side, and carries the cooperation on the investigation side The communication terminal measures the signal strength of the wireless beacon with respect to the rotation of two antennas separated by a half of the wavelength of the carrier frequency of the wireless beacon, and the mobile communication on the investigation side with respect to the measured maximum signal strength Measure the azimuth of the terminal, measure the absolute position of its own station with GPS, send the measurement azimuth and the measured absolute position to the mobile communication terminal on the investigation side, the carrier frequency of the radio beacon in the mobile communication terminal on the investigation side Wavelength Rotate two antennas separated by 2 to measure the signal strength of the wireless beacon, measure the direction of the mobile communication terminal on the investigation side, measure the absolute position of the own station with GPS, and cooperate with the investigation side The measurement direction and the absolute measurement position are received from the mobile communication terminal that conducts the measurement, the measurement communication direction of the mobile communication terminal on the investigation side, the measurement absolute position, and the mobile communication terminal that cooperates on the investigation side. Based on the principle of triangulation from the received measurement azimuth and measurement absolute position, the relative position with respect to the mobile communication terminal on the investigation side is specified and displayed, so that the mobile communication terminal on the investigation side can use GPS indoors. In addition, it becomes possible to specify the relative position of the mobile communication terminal on the investigation side even in an environment such as outside the base station area.
A wireless LAN device can be shared for transmission and reception of wireless beacons, and a configuration that does not require adding special additional means is possible.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration of a mobile communication terminal according to the present invention. As shown in this figure, the mobile communication terminal 200 includes a GPS (Global Positioning System) receiving unit 209 connected to an antenna 208, a radio transmitting / receiving unit 210 connected to an antenna 211, and radios connected to antennas 221 and 222. The mobile communication terminal 200 includes a beacon transmission / reception unit 220, a display unit 240, an operation unit 250, an azimuth meter 260, and a control unit 230 that controls these operations.

The mobile communication terminal 200 includes a mobile communication terminal 200X on the investigation side, a mobile communication terminal 200A on the investigation side, and a mobile communication terminal 200B that cooperates with the investigation side.
The mobile communication terminal 200X on the investigation side is a mobile communication terminal that has a lost child, a lost person, a deceased, etc., and whose location should be investigated. When specifying the location of the communication terminal, the antenna 208, the GPS reception unit 209, the antenna 211, the wireless transmission / reception unit 210 do not function, such as indoors of a large-scale retail store, outside the base station area of an outdoor field including trees, etc. It is assumed that the position of the own station cannot be determined by these.

Each of the mobile communication terminal 200A on the investigation side and the mobile communication terminal 200B that cooperates on the investigation side can use the antenna 208, the GPS reception unit 209, the antenna 211, and the wireless transmission / reception unit 210. Although the mobile communication terminal 200X is investigated, the mobile communication terminal 200B that cooperates with the investigation side is a mobile communication terminal that cooperates with the mobile communication terminal 200A on the investigation side.
Here, the antenna 211 and the wireless transmission / reception unit 210 have a function of performing a call and data transmission / reception.

The antenna 208 and the GPS receiving unit 209 have a function of specifying the absolute position of the own station.
The display unit 240 has a function of displaying various types of information to the user.
The operation unit 250 inputs various types of information through user operations.
The control unit 230 includes a CPU (Central Processing Unit), a memory, a logic circuit, an analog circuit, and the like.
Except for the antennas 221 and 222, the wireless beacon transmission / reception unit 220, and the azimuth meter 260, the configuration of the general mobile communication terminal 200 is used.

The antennas 221 and 222 have the same characteristics and are appropriately arranged spatially so that the directivities are in the same direction and are separated by ½ of the wavelength λ of the carrier frequency of the radio beacon described later.
The wireless beacon transmission / reception unit 220 transmits a signal that can be a wireless beacon by one of the antennas 221 and 222, receives the electric field strength as a wireless beacon signal by both the antennas 221 and 222, and directly synthesizes and receives the received signals. It has a function that can measure the intensity of the signal.

The compass 260 is an element or a composite component that can detect an absolute orientation. Here, the direction is an angle from the north.
Further, the control unit 230 is provided with a relative position specifying unit 230A, and the relative position specifying unit 230A of the mobile communication terminal 200X on the investigation side controls the transmission of the wireless beacon and the mobile communication terminal 200B that cooperates on the investigation side The relative position specifying unit 230A controls the calculation of the azimuth relative to the mobile communication terminal 200X on the investigation side and the calculation of the absolute position of the own station. The relative position specification unit 230A of the mobile communication terminal 200A on the investigation side Direction calculation with respect to the communication terminal 200X, control of the absolute position of the local station, and the mobile communication terminal 200A on the investigation side, the mobile communication terminal 200B that cooperates with the investigation side, the orientation with respect to the mobile communication terminal 200X on the investigation side, Based on the principle of triangulation from the absolute position of the own station, the relative position of the mobile communication terminal 200X on the investigation side is specified.

FIG. 2 is a diagram for explaining a spatial arrangement example of the antennas 221 and 222 in FIG. 1 of the mobile communication terminals 200A and 200B on the investigation side. As shown in the figure, when the mobile communication terminal 200 is folded into two parts, the antenna 221 and the antenna 222 are folded so that the distance between the antenna 221 and the antenna 222 is ½ of the wavelength λ of the carrier frequency of the radio beacon. An antenna 221 is built in on the other side, and an antenna 222 is built on the other side.
FIG. 3 is a diagram for explaining an operation example expected by the antennas 221 and 222 in FIG. 2 when each of the investigation side mobile communication terminals 200A and 200B receives the radio beacon. As shown in the figure, in the case of receiving a wireless beacon from the investigation-side mobile communication terminal 200X in each of the investigation-side mobile communication terminals 200A and 200B, in the investigation-side mobile communication terminals 200A and 200B, In the case of the folding type, the distance between the antennas 221 and 222 is set to be 1/2 of the wavelength λ of the carrier frequency of the wireless beacon, the line connecting the antenna 221 and the antenna 222 is horizontal, and the vertical The wireless beacon transmitting / receiving unit 220 combines signals received from the antennas 221 and 222, and continuously measures the intensity of the combined signal.

As the line connecting the antenna 221 and the antenna 222 is leveled and rotated 360 degrees with respect to the vertical axis, the azimuth meter 260 (see FIG. 1) continuously detects the absolute direction.
In the relative position specifying unit 230A of each control unit 230 of the mobile communication terminals 200A and 200B, the intensity of the signal continuously measured from the wireless beacon transmission / reception unit 220 with respect to each rotation of the mobile communication terminals 200A and 200B is obtained. The absolute azimuth detected from the azimuth meter 260 is input, the input absolute azimuth and the intensity of the input signal are held, and the intensity of the signal with respect to the absolute azimuth is formed.

  FIG. 4 is a diagram illustrating an ideal value of the intensity of the signal measured by the wireless beacon transmitting / receiving unit 220 when the operation of FIG. 3 is performed. As shown in this figure (a), when the front of the investigation-side portable communication terminal 200X is 0 degrees, and as shown in FIG. 3, each of the investigation-side portable communication terminals 200A, 200B is rotated 360 degrees Has a phase difference due to the distance between the antenna 221 and the antenna 222, causing interference and changing the signal intensity. That is, the relative position specifying unit 230A of the control unit 230 determines that the mobile communication terminal on the transmission side exists in the direction in which the signal strength is strongest.

In this case, since there are two signal intensity maximum points in 360 degrees, the control unit 230 of the control unit 230 determines that the two directions are different by 180 degrees.
As shown in this figure (b), when the distance between the antenna 221 and the antenna 222 is shorter than ½ of the wavelength λ of the wireless beacon, when the rotation operation of the antenna 221 and the antenna 222 is inclined, the signal strength Change is small, but if it is not extreme, there is no significant effect.
As shown in FIG. 5C, the relative position specifying unit 230A of the control unit 230 forms a signal strength with respect to the absolute direction, and specifies the direction with respect to the mobile communication terminal 200X on the investigation side.

FIG. 5 is a diagram showing a spatial arrangement example of the mobile communication terminal when the relative position is specified. As shown in the figure, when the investigating mobile communication terminal 200X and the investigating mobile communication terminals 200A and 200B are spatially arranged, the investigating mobile communication terminal 200X is connected to the investigating mobile communication terminal 200X. It is assumed that the terminal 200A is in the direction α and further in the direction β of the mobile communication terminal 200B that cooperates with the investigation side.
The relative position specifying unit 230A of the control unit 230 in the investigating mobile communication terminal 200A specifies the azimuth α of the investigating mobile communication terminal 200A as, for example, −12 degrees (North) or 168 degrees (North).

Further, in the relative position specifying unit 230A of the control unit 230 in the mobile communication terminal 200B that cooperates with the investigation side, the orientation β of the mobile communication terminal 200B on the investigation side is set to, for example, 58 degrees (North) or −122 degrees (North). Is identified.
The mobile communication terminal 200A on the investigation side has an orientation of -12 degrees north latitude (North) or 168 degrees north latitude (North) and the mobile communication terminal 200B that cooperates with the investigation side 58 degrees north latitude (North) or -122 degrees north latitude (North) The mobile communication terminal 200X on the investigation side is located at the intersection of the directions. With this alone, the relative position of the mobile communication terminal 200X on the investigation side is not yet specified. As described below, the relative position of the mobile communication terminal 200X on the investigation side is specified using the principle of triangulation.

FIG. 6 is a diagram showing an example of specifying the relative position of the mobile communication terminal 200X on the investigation side using the principle of triangulation. As shown in the figure, the white face mark is the mobile communication terminal 200A on the investigation side, the gray face mark is the mobile communication terminal 200B cooperating with the investigation side, and the double circle mark is the mobile communication terminal 200X on the investigation side. is there.
Each of the mobile communication terminals 200A and 200B on the investigation side acquires the absolute position (xa, ya) of the own station via the antenna 208 and the GPS receiving unit 209, and the mobile communication terminal 200A on the investigation side From the mobile communication terminal 200B that cooperates, the absolute position (xb, yb) of the mobile communication terminal 200B through the antenna 211 and the wireless transmission / reception unit 210, the orientation from the mobile communication terminal 200B to the mobile communication terminal 200X on the investigation side Get information. Here, the x coordinate is longitude and the y coordinate is latitude.

In the mobile communication terminal 200A on the investigation side, the control unit 230 of the control unit 230 receives the absolute value of the own station, the direction information to the mobile communication terminal 200X on the investigation side, and the mobile communication terminal 200B that cooperates on the investigation side. The relative position of the mobile communication terminal 200X on the investigation side is specified using the principle of triangulation from the acquired absolute position and the azimuth information to the mobile communication terminal 200B on the investigation side.
That is, the distance L between the mobile communication terminal 200A and the mobile communication terminal 200B is calculated from the absolute positions of the mobile communication terminals 200A and 200B.

Furthermore, since the azimuth | direction with respect to the distance L between 200 A of mobile communication terminals and the mobile communication terminal 200B is calculated using each absolute position, with respect to the triangle which the mobile terminal 200A, the mobile communication terminal 200B, and the mobile communication terminal 200X form The angle γ of the mobile communication terminal 200A with respect to the mobile communication terminal 200B and the mobile communication terminal 200X and the angle η of the mobile communication terminal 200B with respect to the mobile communication terminal 200A and the mobile communication terminal 200X are calculated.
Here, L = ((xa−xb) ² + (ya−yb) ² ) ^1/2
SIN (180−β−η) = (xa−xb) / L
SIN (90−α−γ) = (yb−ya) / L
In this way, since the length (L) of one side of the triangle and the angles γ and η sandwiching the one side are calculated, the coordinate position (xx, yx) of the mobile communication terminal 200X can be calculated. It is also possible to calculate the distance from the mobile communication terminal 200A on the investigation side to the mobile communication terminal 200X on the investigation side.

As shown in FIG. 6A, the relative position specifying unit 230A of the control unit 230 in the mobile communication terminal 200A displays the positions of the mobile communication terminals 200A and 200B and the mobile communication terminal 200X on the display unit 240. The azimuth | direction of a display is shown and the distance with respect to the mobile communication terminal 200X is displayed.
Furthermore, in the relative position specifying unit 230A of the control unit 230 in the mobile communication terminal 200A, the mobile communication terminals 200A and 200B and the mobile communication terminal 200X displayed on the display unit 240 are connected to each other by a dotted line, and the mutual positional relationship is established. For clarity, an arrow pointing from the mobile communication terminal 200A to the mobile communication terminal 200X is attached.

As shown in FIG. 6B, when the map display is possible in the control unit 230 and the relative position specifying unit 230A in the mobile communication terminal 200A, the mobile communication terminals 200A and 200B shown in FIG. The position information of the mobile communication terminal 200X may be displayed superimposed on the map information. Thereby, visibility can be improved.
FIG. 7 is a flowchart for explaining a series of operations of the relative position specifying system of the mobile communication terminal according to the present invention. As shown in this figure, in step 100, when there is an investigation-side portable communication terminal 200X for which a relative position is to be obtained, an investigation-side portable communication terminal 200A, and a portable communication terminal 200B that cooperates with the investigation-side portable communication terminal 200B, The operator of the terminal 200 </ b> A specifies the investigation-side portable communication terminal 200 </ b> X and the investigation-side portable communication terminal 200 </ b> B and performs a start operation in order to investigate the investigation-side portable communication terminal 200 </ b> X.

In step 101, the investigation-side portable communication terminal 200 </ b> A wirelessly transmits to the investigation-side portable communication terminal 200 </ b> X via one of the antennas 221 and 222 and the wireless beacon transmission / reception unit 220 according to the start operation in step 100. Send a beacon request.
In step 102, the investigation-side portable communication terminal 200X that has received the wireless beacon request sends the wireless beacon request reception to the investigation-side portable communication terminal via one of the antennas 221 and 222 and the wireless beacon transmission / reception unit 220. Reply to 200A.

Next, in step 103, the mobile communication terminal 200A on the investigation side sends a monitoring request to the mobile communication terminal 200B that cooperates with the investigation side. This monitoring request may be made via any one of the antennas 221 and 222, the wireless beacon transmission / reception unit 220, or the antenna 211 and the wireless transmission / reception unit 210.
In step 104, the mobile communication terminal 200B that has received the monitoring request reception and cooperates on the investigation side returns the monitoring request reception to the mobile communication terminal 200A on the investigation side. This reply may be performed via any one of the antennas 221 and 222, the wireless beacon transmission / reception unit 220, or the antenna 211 and the wireless transmission / reception unit 210.

In step 105, the mobile communication terminal 200X on the investigation side transmits a wireless beacon, and the mobile communication terminal 200A on the investigation side and the mobile communication terminal 200B that cooperates on the investigation side monitor the wireless beacon.
Note that the mobile communication terminal 200X on the investigation side may start sending a wireless beacon in step 102.
In the wireless beacon monitoring of the mobile communication terminal 200A on the investigation side and the mobile communication terminal 200B that cooperates on the investigation side, the operator performs a rotation operation as shown in FIG.

In the mobile communication terminal 200A on the investigation side and the relative position specifying unit 230A of each control unit 230 of the mobile communication terminal 200B that cooperates with the investigation side, the mobile communication terminal 200X on the investigation side received by the wireless beacon transmission / reception unit 220 Continuously measure the signal strength of the wireless beacon from, continuously measure the azimuth by the azimuth meter 260, hold the two measurement results, and combine them, the mobile communication terminal on the investigation side in the azimuth with the strongest signal strength It is determined that 200X exists.
In this case, at the same time, each of the mobile communication terminal 200A on the investigation side and the mobile communication terminal 200B that cooperates on the investigation side calculates the absolute position of the own station via the antenna 208 and the GPS receiving unit 209.

In step 106, the mobile communication terminal 200B that cooperates with the investigating side reports the result of the direction in which the signal strength is maximum and the absolute position of the mobile station to the investigating mobile communication terminal 200A. The mobile communication terminal 200B that cooperates with the investigation side may perform the timing between step 100 and step 107 as the timing for reporting the absolute position of the local station.
This report is made via the antenna 211 and the wireless transmission / reception unit 210. There are various methods for this report, such as a visual method and telephone contact.

  In step 107, in the control unit 230 and the relative position specifying unit 230A in the investigation-side portable communication terminal 200A, the investigation-side portable communication terminal 200A for the investigation-side portable communication terminal 200X, and the investigation-side portable communication terminal 200B Mobile communication terminal 200A and the investigation side mobile communication terminal 200A and the investigation side mobile communication terminal 200A and the mobile communication terminal 200B carrying out the investigation side cooperation. The distance between the terminals 200B, the mobile communication terminal 200B that cooperates on the investigation side, the angle of the mobile communication terminal 200A on the investigation side relative to the mobile communication terminal 200X on the investigation side, the mobile communication terminal 200X on the investigation side, the mobile phone on the investigation side Using the triangulation principle from the angle of the mobile communication terminal 200B that cooperates with the communication terminal 200A on the investigation side, Identifying a relative position with respect to the communication terminal 200X.

The specification of the relative position may be displayed on the display unit 240, and further, the specification of the relative position may be superimposed on the map.
Therefore, according to the present invention, the mobile communication terminal 200A on the investigation side and the mobile communication terminal 200B that cooperates on the investigation side have the antennas 221 and 222, the radio beacon transmission / reception unit 220 with respect to the mobile communication terminal 200X on the investigation side. The mobile communication terminal 200X on the investigation side is indoors, outside the base station area, etc. and the antenna 208, the GPS reception unit 209, the antenna 211, and the wireless transmission / reception unit 210 cannot be used. It becomes possible to specify the relative position of the mobile communication terminal 200X.

  The antennas 221 and 222 and the wireless beacon transmission / reception unit 220 in FIG. 1 may be shared for wireless LAN (Local Area Network) even if they are not dedicated. Thereby, it becomes a structure which does not need to add a special addition means.

  In the mobile communication terminal 200X dedicated to the investigation side, in FIG. 1, the two antennas 221 and 222 are set to one, the radio beacon transmission / reception unit 220 has only a transmission / reception function, and does not measure the signal strength against rotation, Further, the compass 260 may not be provided. This is for simplifying the configuration of the mobile communication terminal 200X on the investigation side.

  Although the mobile communication terminal has been described above, the present invention is not limited to this, and the present invention can also be used for a mobile phone, a PHS (simple mobile phone), and a PDA (mobile information terminal).

It is a block diagram which shows schematic structure of the portable communication terminal which concerns on this invention. It is a figure explaining the example of spatial arrangement | positioning of the antennas 221 and 222 in FIG. 1 of each of the investigation side mobile communication terminals 200A and 200B. It is a figure explaining the example of operation anticipated with the antennas 221 and 222 in FIG. 2 at the time of radio beacon reception of each of the mobile communication terminals 200A and 200B on the investigation side. It is the figure which showed the ideal value of the intensity | strength of the signal measured in the radio | wireless beacon transmission / reception part 220 when operation of FIG. 3 was performed. It is a figure which shows the example of spatial arrangement | positioning of a mobile communication terminal, when specifying a relative position. It is a figure which shows the example which specifies the relative position of the portable communication terminal 200X by the side of investigation using the principle of triangulation. It is a flowchart explaining a series of operation | movement of the relative position specification system of the mobile communication terminal which concerns on this invention.

Explanation of symbols

200 ... Mobile communication terminal 200X ... Investigation-side mobile communication terminal 200A ... Investigation-side mobile communication terminal 200B ... Investigation-side mobile communication terminals 208, 211, 221, 222 ... Antenna 209 ... GPS receiver 210 ... Wireless Transmission / reception unit 220 ... Beacon transmission / reception unit 230 ... Control unit 230A ... Relative position specifying unit 240 ... Display unit 250 ... Operation unit 260 ... Direction meter

Claims (10)

In the relative position identification system of the mobile communication terminal that identifies the relative position of the other party,
A mobile communication terminal on the investigation side that sends out a wireless beacon in response to a request;
Rotate two antennas separated by 1/2 the wavelength of the carrier frequency of the wireless beacon, measure the signal strength of the wireless beacon, measure the direction of the mobile communication terminal on the investigation side, and determine the absolute position of its own station by GPS A mobile communication device that cooperates on the investigation side,
The mobile communication terminal on the investigation side is requested to transmit a wireless beacon, and the signal strength of the wireless beacon is measured with respect to the rotation of two antennas separated by 1/2 of the wavelength of the wireless beacon carrier frequency. Measure the direction of the mobile communication terminal on the investigation side with respect to the maximum signal strength, measure the absolute position of the own station with GPS, and carry the measurement orientation, the measured local station absolute value, and the cooperation of the investigation side Relative mobile communication terminal equipped with a mobile communication terminal on the investigation side that identifies and displays a relative position to the mobile communication terminal on the investigation side on the principle of triangulation from the reception azimuth received from the communication terminal and the absolute position of the reception own station Location system. The mobile communication terminal on the investigation side is on the map as the relative position of the mobile communication terminal on the investigation side, the position of the mobile communication terminal on the investigation side, the position of the mobile communication terminal that cooperates with the investigation side, 2. The relative position specifying system for mobile communication terminals according to claim 1, wherein the position of the mobile communication terminal on the investigation side is displayed. In the relative position specifying method of the mobile communication terminal for specifying the relative position of the other party,
Requesting transmission of a wireless beacon from a mobile communication terminal on the investigation side to a mobile communication terminal on the investigation side;
Sending a wireless beacon in response to a request from the mobile communication terminal on the investigation side;
Requesting monitoring of a wireless beacon from the mobile communication terminal on the investigation side to a mobile communication terminal performing cooperation on the investigation side from the mobile communication terminal on the investigation side;
The signal strength of the wireless beacon is measured with respect to the rotation of two antennas separated by 1/2 of the wavelength of the carrier frequency of the wireless beacon at the mobile communication terminal that cooperates with the investigation side, and the measured maximum signal strength is Measuring the direction of the mobile communication terminal on the investigation side, measuring the absolute position of the own station with GPS, and sending the measurement orientation and the measured absolute position to the mobile communication terminal on the investigation side;
Measure the signal strength of the wireless beacon by rotating two antennas separated by 1/2 of the carrier frequency of the wireless beacon at the mobile communication terminal on the investigation side, and measure the orientation of the mobile communication terminal on the investigation side , Measuring the absolute position of the own station with GPS, and receiving the measurement azimuth and measurement absolute position from the mobile communication terminal that cooperates on the investigation side;
In the investigation side mobile communication terminal, based on the principle of triangulation from the measurement orientation, measurement absolute position, measurement orientation received from the mobile communication terminal cooperating with the investigation side, the measurement orientation of the investigation side mobile communication terminal, And a step of specifying and displaying a relative position with respect to the mobile communication terminal on the investigation side. The mobile communication terminal on the investigation side is on the map as the relative position of the mobile communication terminal on the investigation side, the position of the mobile communication terminal on the investigation side, the position of the mobile communication terminal that cooperates with the investigation side, The relative position specifying method of the mobile communication terminal according to claim 2, wherein the position of the mobile communication terminal on the investigation side is displayed. In the program that executes the relative position specification of the mobile communication terminal that specifies the relative position of the other party,
A procedure for requesting transmission of a wireless beacon from the investigation side mobile communication terminal to the investigation side mobile communication terminal,
A procedure for sending a wireless beacon in response to a request from the mobile communication terminal on the investigation side,
A procedure for requesting monitoring of a wireless beacon from the mobile communication terminal on the investigation side with respect to the mobile communication terminal cooperating on the investigation side from the mobile communication terminal on the investigation side,
The signal strength of the wireless beacon is measured with respect to the rotation of two antennas separated by 1/2 of the wavelength of the carrier frequency of the wireless beacon at the mobile communication terminal that cooperates with the investigation side, and the measured maximum signal strength is Measuring the orientation of the mobile communication terminal on the investigating side, measuring the absolute position of the own station with GPS, and sending the measurement orientation and the measured absolute position to the mobile communication terminal on the investigating side,
Measure the signal strength of the wireless beacon by rotating two antennas separated by 1/2 of the carrier frequency of the wireless beacon at the mobile communication terminal on the investigation side, and measure the orientation of the mobile communication terminal on the investigation side , Measuring the absolute position of the own station with GPS, and receiving the measurement azimuth and measurement absolute position from the mobile communication terminal that cooperates on the investigation side,
In the investigation side mobile communication terminal, based on the principle of triangulation from the measurement orientation, measurement absolute position, measurement orientation received from the mobile communication terminal cooperating with the investigation side, the measurement orientation of the investigation side mobile communication terminal, And a procedure for specifying and displaying a relative position with respect to the mobile communication terminal on the investigation side. The mobile communication terminal on the investigation side is on the map as the relative position of the mobile communication terminal on the investigation side, the position of the mobile communication terminal on the investigation side, the position of the mobile communication terminal that cooperates with the investigation side, 6. The program for executing the relative position specification of a mobile communication terminal according to claim 5, wherein the position of the mobile communication terminal on the investigation side is displayed. In a mobile communication terminal that identifies the relative position of the other party,
A GPS measurement unit that measures the absolute position of the own station with GPS,
A wireless transmission / reception unit for wireless transmission / reception with other mobile communication terminals;
An azimuth meter that measures an azimuth relative to the rotation of the mobile communication terminal;
Two antennas that transmit and receive wireless beacons and are spaced apart by half the wavelength of the wireless beacon carrier frequency;
The mobile communication terminal on the investigation side sends a wireless beacon from one of the two antennas upon request, and the mobile communication terminal that cooperates on the investigation side responds to the rotation of the mobile communication terminal that cooperates on the investigation side. The signal strength is measured from the phase difference between the signals of the wireless beacons received from the two antennas, and the mobile communication terminal on the investigation side requests the mobile communication terminal on the investigation side to transmit a wireless beacon and A radio beacon transmission / reception unit that measures signal strength from a phase difference between signals of radio beacons received from the two antennas with respect to rotation of the mobile communication terminal;
In the mobile communication terminal that cooperates with the investigation side, the azimuth measured by the compass with respect to the maximum signal intensity measured by the wireless beacon transmission / reception unit, the absolute position of the own station measured by the GPS measurement unit , Transmitted to the investigating mobile communication terminal via the wireless transceiver, and measured by the compass for the maximum signal strength measured by the wireless beacon transceiver in the investigating mobile communication terminal Based on the principle of triangulation from the azimuth direction, the absolute position of the own station measured by the GPS measurement unit, the azimuth received from the portable communication terminal that cooperates with the investigation side, and the absolute position of the own station A portable communication terminal comprising: a relative position specifying unit that specifies and displays a relative position with respect to the communication terminal. The mobile communication terminal on the investigation side is on the map as the relative position of the mobile communication terminal on the investigation side, the position of the mobile communication terminal on the investigation side, the position of the mobile communication terminal that cooperates with the investigation side, The mobile communication terminal according to claim 7, wherein a position of the mobile communication terminal on the investigation side is displayed. The mobile communication terminal according to claim 7, wherein the investigation-side mobile communication terminal uses the two antennas as one antenna, and the compass is deleted. 8. The portable communication terminal according to claim 7, wherein the two antennas and the wireless beacon transmission / reception unit are shared with those used for a wireless LAN.

Images