JP6502234B2 - PORTABLE TERMINAL, PORTABLE TERMINAL IDENTIFICATION METHOD, AND PORTABLE TERMINAL POSITIONING PROGRAM - Google Patents

Description

  The present invention relates to a method of specifying the position of a portable terminal.

  In patent document 1 etc., the communication system which calculates the positional information on the said public wireless base station based on the distance from a public wireless base station etc., and uses it for estimation of the positional information on a portable terminal is proposed.

JP 2012-103138 A

  However, it is necessary to calculate the distance from the public wireless base station, etc., and estimation of position information becomes complicated.

  Therefore, an object of the present invention is to simply provide a portable terminal or the like that complements the position determination based on satellite positioning.

  The portable terminal according to the present invention includes a satellite radio wave receiving unit for receiving radio waves from a positioning satellite, a captured number threshold value regarding the number of captured satellites which is the number of satellites having received radio waves at the satellite radio wave receiving unit, and radio waves from a base station. A portable terminal comprising a recording unit for recording a predetermined threshold related to the intensity and a communication unit for communicating with a base station, and the number of captured satellites is greater than or equal to the acquisition number threshold via the satellite radio wave receiving unit. The position of the portable terminal is specified based on the position information of the satellite that has successfully received the radio wave and the radio wave transmission time, and the number of satellites captured is less than the threshold number of captured satellites. If the strength of the radio wave received from the mobile phone base station located at is higher than a predetermined threshold, the position of the mobile terminal is specified based on the position information of the mobile phone base station whose communication unit is in communication among the base stations. Be done.

  In this case, even under conditions where accurate positioning information can not be obtained by satellite positioning, it is possible to identify an approximate position using the position of a nearby base station.

  In addition, position determination based on the position information of the mobile phone base station can be performed simply by comparing the set threshold (the capture number threshold, the predetermined threshold) with the measurement result (the strength of the received radio wave, the number of captured satellites) It can be determined whether or not to perform 3 position identification). For this reason, it becomes possible to perform positioning which supplements specification of the position based on satellite positioning by simple comparison operation.

  Preferably, the recording unit records a base station database including identification information of the base station, position information of the base station, and information on each base station regarding the intensity threshold, and is in communication with the communication unit among the base stations. When the radio wave intensity received from one of the base stations in communication with the communication unit is greater than or equal to that corresponding to the base station in the base station database. The position of the portable terminal is specified based on the position information of one of the base stations which is included in the base station database and the communication unit is in the communication state.

In this case, it is possible to specify the position of the portable terminal with higher accuracy than the position information obtained by satellite positioning.
It is a communication area of a base station included in a base station database, and it is necessary to have a portable terminal near the base station so that the strength of radio waves is higher than a strength threshold, but a base station included in the base station database Can increase the area where the position can be specified by the position specification (first position specification) based on the position information of the base station included in the base station database.

  In addition, the position information of the base station included in the base station database by comparing the set threshold (intensity threshold, acquisition number threshold, predetermined threshold) with the measurement result (intensity of received radio wave, number of acquired satellites) It is possible to determine whether or not to perform position specification based on (1st position specification) or position specification based on position information of the mobile phone base station (3rd position specification). For this reason, it becomes possible to perform positioning which supplements specification of the position based on satellite positioning by simple comparison operation.

  More preferably, any threshold corresponding to a mobile phone base station in the base station database is set to a value larger than a predetermined threshold.

  In addition, preferably, the strength threshold for each base station in the base station database is the strength of radio waves received from the base station when the distance between the portable terminal and one of the base stations in communication with the communication unit is 10 m or less. It is set.

  Preferably, the base station is at least one of a wireless LAN access point and a wireless PAN access point, and a mobile phone base station fixed at a specific location, and the communication unit and the wireless LAN The communication of the communication of the access point is performed without receiving the connection permission notification from the access point of the wireless LAN, and the communication of the communication of the communication point and the access point of the wireless PAN is the connection permission notification from the access point of the wireless PAN It takes place without receiving it.

  Preferably, if the number of captured satellites is smaller than the captured number threshold, and if the strength of the radio wave received from the mobile phone base station in which the communication unit is in communication among the base stations is not the predetermined threshold or more, The position specified within the fixed time (second time) is taken as the position of the portable terminal.

  If the strength of radio waves received from a base station in communication state is weak, the mobile terminal and the base station are apart, and it may not be appropriate to set the position of the base station as the position of the mobile terminal. High (high error), but the position information obtained in the previous position determination is not the latest position information because the error is relatively small, but using the position obtained in the previous position determination It becomes possible to identify the approximate position.

  More preferably, the display unit further includes a display unit for displaying the specified position, and the display unit is specified by at least one of a display method in which the color is different for each type of position specification and a display method in which the type of position specification is indicated by characters. Display the location on the map.

  This makes it possible to easily visually identify which method has been used for localization.

  The portable terminal according to the present invention includes a satellite radio wave receiving unit for receiving radio waves from a positioning satellite, a captured number threshold value regarding the number of captured satellites which is the number of satellites having received radio waves at the satellite radio wave receiving unit, and radio waves from a base station. A recording unit for recording a predetermined threshold value related to strength, base station identification information, base station position information, and a base station database including information on each base station related to the strength threshold, and a communication unit for communicating with the base station Of the base station that is in communication with the communication unit is included in the base station database and the strength of radio waves received from those in communication with the communication unit of the base station is If the strength threshold is equal to or higher than that corresponding to the base station in the base station database, position information of one of the base stations which is included in the base station database and the communication unit is in communication state The position of the portable terminal is specified based on that, and radio waves received from those in communication state with the communication unit among the base stations that are in communication with the communication unit are not included in the base station database The radio wave can be received via the satellite radio wave receiver when the strength of the satellite is not equal to or higher than that corresponding to the base station in the base station database, and the number of captured satellites is greater than or equal to the acquired number threshold. The position of the portable terminal is specified based on the position information of the satellite and the radio wave transmission time, and among the base stations, those in communication with the communication unit are not included in the base station database, or In the case where the strength of the radio wave received from those in communication with the communication unit is not a strength threshold and not higher than that corresponding to the base station in the base station database, the number of captured satellites is captured When the strength of the radio wave received from the mobile phone base station which is smaller than the threshold and in which the communication unit is in communication among the base stations is equal to or higher than a predetermined threshold, the mobile unit in which the communication unit is in communication is among the base stations The position of the portable terminal is specified based on the position information of the telephone base station.

  The position specifying method of the portable terminal according to the present invention includes a satellite radio wave receiving unit for receiving radio waves from a positioning satellite, a captured number threshold regarding the number of captured satellites, which is the number of satellites having received radio waves at the satellite radio wave receiving unit, and a base It communicates with a recording unit that records a predetermined threshold for radio wave strength from a station, a base station database including identification information of the base station, location information of the base station, and information for each base station regarding the strength threshold, and a base station A method of specifying the position of a portable terminal having a communication unit, wherein one of the base stations in communication with the communication unit is included in the base station database and from among the base stations in communication with the communication unit If the strength of the received radio wave is equal to or higher than the strength threshold and corresponding to the base station in the base station database, the base station is included in the base station database and the communication unit communicates The first position specifying step of specifying the position of the portable terminal based on the position information of the state, and one of the base stations in communication with the communication unit is not included in the base station database, or When the strength of radio waves received from those in communication with the communication unit is not less than the strength threshold and not higher than that corresponding to the base station in the base station database, and the number of captured satellites is larger than the captured number threshold A second position specifying step of specifying the position of the portable terminal on the basis of the position information of the satellite which has received the radio wave via the satellite radio wave receiver and the radio wave transmission time; In the base station database, the strength of the radio wave received from the base station database that is not included in the base station database or from among the base stations in communication with the communication unit is the strength threshold. If the number of captured satellites is less than the captured number threshold and the strength of the radio wave received from the mobile phone base station in which the communication unit is in communication among the base stations is less than or equal to that corresponding to the ground station, And a third position specifying step of specifying the position of the portable terminal based on the position information of the mobile phone base station in which the communication unit is in communication state among the base stations when the threshold is exceeded.

  A position identification program of a portable terminal according to the present invention comprises a satellite radio reception unit for receiving radio waves from a positioning satellite, a threshold number of acquisitions regarding the number of satellites captured, which is the number of satellites that received radio waves at the satellite radio reception unit It communicates with a recording unit that records a predetermined threshold for radio wave strength from a station, a base station database including identification information of the base station, location information of the base station, and information for each base station regarding the strength threshold, and a base station A program for locating a portable terminal having a communication unit, wherein one of the base stations in communication with the communication unit is included in the base station database and from among the base stations in communication with the communication unit Among the base stations, the base station database is included in the base station database when the strength of the received radio wave is equal to or higher than the strength threshold and corresponding to the base station in the base station database, and A first position specifying step of specifying the position of the portable terminal based on position information of the communication unit in the communication state, and a base station database which is in communication with the communication unit among the base stations, Alternatively, the strength of the radio wave received from one of the base stations in communication with the communication unit is not less than the strength threshold and not higher than that corresponding to the base station in the base station database, and the number of captured satellites is the number threshold of acquisition If there are more than the above, the second position specifying step of specifying the position of the portable terminal based on the position information of the satellite that has successfully received the radio wave via the satellite radio wave receiver and the radio wave transmission time, and communication among the base stations The strength of radio waves received from those in communication status with the communication unit is not included in the base station database or from among those in the communication status with the communication unit among If the number of acquired satellites is less than the acquired number threshold and the communication unit of the base station is in communication, the strength of the radio wave received from the mobile phone base station is And a third position specifying step of specifying the position of the mobile terminal based on position information of the mobile phone base station in which the communication unit is in communication state among the base stations when the threshold is equal to or more than the predetermined threshold.

  As described above, according to the present invention, it is possible to easily provide a portable terminal or the like that supplements the determination of the position based on satellite positioning.

It is a block diagram of the portable terminal in this embodiment. It is a figure which shows the example of a content of a base station database. It is a flowchart which shows the procedure of a position identification program. It is a figure which shows the example of a display of the map containing the identified position.

  Hereinafter, the present embodiment will be described using the drawings. The portable terminal 1 in the present embodiment includes an operation unit 10, a recording unit 20, a communication unit 30, a display unit 40, a satellite radio wave reception unit 50, and a control unit 90 (see FIG. 1).

The operation unit 10 is an input unit such as a numeric keypad for inputting a telephone number or the like.
When the user of the portable terminal 1 operates the operation unit 10, on-off control of the position specification program, update control of the base station database DB1 via the communication unit 30, and the like are performed.

The recording unit 20 is a base station database DB1 for determining position information, a map database DB2 displayed on the display unit 40, an intensity threshold (first threshold) t1 for each base station set in the base station database DB1, and the number of acquisitions A threshold (second threshold) t2 and a predetermined threshold (third threshold) t3 regarding the radio wave intensity from the mobile phone base station are recorded.
Further, in the recording unit 20, a position specifying program for selecting a positioning means for specifying position information is installed.

The base station database DB1 has the name of the base station, the type of the base station, the identification information of the base station, the position information of the base station, and the strength threshold t1, It is recorded in the section 20 (see FIG. 2).
It is desirable that the base station database DB1 be updated via the communication unit 30 every first time (for example, one week) as the information on the registered base station is updated.

  The base station referred to in this embodiment is a device that emits radio waves, is communicable with the communication unit 30, and is fixed at a specific location. For example, a mobile phone base station (a base of a communication carrier that forms a radio link with a mobile phone) Stations, including wireless wide area network (WAN) base stations and wireless metropolitan area network (MAN) base stations, wireless local area network (IEEE 802.11) access points, wireless personal area networks (PAN), and the like. A base station in a wireless network, such as an access point of IEEE 802.15.1 (IEEE 802.15 including Bluetooth (registered trademark)), corresponds to a base station in this embodiment.

With regard to the access point of the wireless LAN and the access point of the wireless PAN, the name and identification information of the base station are information that can be acquired when the communication unit 30 can communicate with the base station.
For the mobile phone base station, at least one of the name and identification information of the base station and the position information of the base station are information that can be acquired when the communication unit 30 can communicate with the base station.

The intensity threshold t1 is used to compare with the intensity P of the radio wave received from the base station in communication with the communication unit 30.
The strength threshold t1 is the strength of the radio wave received from the base station when the distance d between the base station in communication state and the portable terminal 1 is a predetermined distance (10 m or less) shorter than the error (several m) of GPS positioning. Set to
As the base station covering a wide area has a stronger output radio wave than the base station covering a narrow area, the intensity threshold t1 is set to a larger value, and the base station covering a narrow area is an intensity threshold A smaller value is set for t1.

  If the specifications and performance regarding the output of radio waves such as the electrolytic intensity of each base station are previously examined, it is possible to determine an appropriate intensity threshold t1.

  In FIG. 2, base station names "ABC" and "HJK" are base stations that cover a relatively wide area, a high value strength threshold value t1 is set, and base station names "WXYZ" are a relatively narrow area An example is shown in which a low value of the intensity threshold t1 is set.

  The communication unit 30 transmits and receives radio waves and communicates with the above-described base station (mobile phone base station, wireless LAN access point, wireless PAN access point).

The communication unit 30 receives the identification information (or base station name) and the position information of the mobile phone base station from the mobile phone base station, and measures the strength P of the radio wave received from the base station.
The communication unit 30 may be configured to simultaneously receive identification information and the like from a plurality of mobile phone base stations.

The communication unit 30 also receives the identification information of the base station from the access point of the wireless LAN or the access point of the wireless PAN, and measures the strength P of the radio wave received from the base station.
For communication between the communication unit 30 and a base station other than the mobile phone base station (access point of wireless LAN or access point of wireless PAN), acquisition of identification information of the base station and strength P of radio waves received from the base station It is for measurement, and identification information is acquired without receiving a connection permission notice from the base station.

The display unit 40 displays the operation status by the operation unit 10, the communication status by the communication unit 30, and the position information of the portable terminal 1 specified by the position specifying program.
The position information of the portable terminal 1 is specified based on the base station database DB1, the information from the communication unit 30, and the information from the satellite radio wave receiving unit 50.

  The satellite radio wave reception unit 50 receives radio waves from positioning satellites such as GPS satellites and quasi-zenith satellites.

  The control unit 90 controls each unit, and in particular, executes a position specifying program, and the position of the portable terminal 1 based on the information from the base station database DB1, the information from the communication unit 30, and the information from the satellite radio wave receiving unit 50. Identify

  Specifically, in the control unit 90, any one of the base stations in communication with the communication unit 30 is included in the base station database DB1, and is the base station and is included in the base station database DB1. If the strength P of the radio wave received from the object is strong, the position of the base station (that is, the predetermined position in the vicinity thereof) included in the base station database DB1 is set as the position of the portable terminal 1 (base station Among these, the first position specification is performed to specify the position of the portable terminal 1 based on the position information of the communication station 30 included in the base station database DB1 and in which the communication unit 30 is in the communication state.

  If the condition for performing the first position identification is not satisfied and the number of satellites (satellites that can receive radio waves) captured by the satellite radio wave reception unit 50 is large, the position obtained by the satellite positioning is used as the portable terminal 1 Set the position of (2nd positioning based on positioning using satellite).

  If the condition for performing the first position specification and the second position specification is not satisfied and the intensity P of the radio wave received from the mobile phone base station in communication with the communication unit 30 is strong, the communication condition with the communication unit 30 is Setting the position of the mobile phone base station (or a predetermined position in the vicinity thereof) as the position of the mobile terminal 1 (a mobile terminal of the base stations based on the position information of the mobile phone base station in which the communication unit 30 is in communication) 3rd position identification which specifies 1 position).

  If the condition for performing the first position specification and the second position specification is not satisfied and the intensity P of the radio wave received from the mobile phone base station in communication with the communication unit 30 is weak, the second time (for example, 1 The position specified within the previous time (the position set by the first position specification or the second position specification or the third position specification) is set as the position of the portable terminal 1 (based on the position information specified immediately before) 4 position identification).

A procedure in which the control unit 90 executes the position specifying program to perform the first position specifying to the fourth position specifying will be described using the flowchart of FIG. 3.
The position specifying program is executed every third time (for example, 30 seconds) or when the user performs a manual operation for obtaining position information using the operation unit 10.

  Based on the information from communication unit 30, control unit 90 determines whether any one of the base stations in communication with communication unit 30 is included in base station database DB 1 (step S11 in FIG. 3). reference).

For example, when one of the base stations in communication with communication unit 30 is a mobile phone base station, control unit 90 selects one of the base stations included in base station database DB1 for at least one of identification information and position information. Then, it is determined whether there is one that matches the base station in the communication state.
When one of the base stations in communication with the communication unit 30 is the access point of the wireless LAN or the access point of the wireless PAN, the control unit 90 determines the identification information of the base stations included in the base station database DB1. Among them, it is determined whether or not there is one that matches the base station in the communication state.

  If the base station in communication with the communication unit 30 is not included in the base station database DB1, the process proceeds to step S14.

  When the base station in communication with the communication unit 30 is included in the base station database DB1, the control unit 90 determines that the strength P of the radio wave received from the base station is the base station in the base station database DB1. It is determined whether or not it is equal to or greater than the intensity threshold (first threshold) t1 corresponding to (see step S12 in FIG. 3).

  If the strength P of the radio wave received from the base station is equal to or greater than the strength threshold t 1, the control unit 90 sets the position of the base station (or a predetermined position in the vicinity thereof) as the position of the portable terminal 1 (first Position identification, see step S13 in FIG. 3).

In this case, it is possible to specify the position of the mobile terminal 1 with higher accuracy than the position information obtained by satellite positioning.
In the communication area of the base station included in the base station database DB1, the portable terminal 1 needs to be near the base station so that the strength P of the radio wave is higher than the strength threshold t1, but the base station database DB1 By increasing the number of base stations included in, it is possible to increase the area where the position can be specified by the first position specification.

  Further, based on the information from the satellite radio wave receiver 50, the control unit 90 determines that the number of satellites (the number of captured satellites) n that can receive radio waves is equal to or greater than the capture number threshold t2 (second threshold, for example, t2 = 4). It is determined whether or not (see step S14 in FIG. 3).

  If the satellite capture number n is equal to or greater than the capture number threshold t 2, the control unit 90 transmits information from the satellite radio reception unit 50, that is, position information and radio transmission of satellites capable of receiving radio waves via the satellite radio reception unit 50. The position of the portable terminal 1 is specified based on the time (second position specification, see step S15 in FIG. 3).

If the satellite capture number n is not equal to or greater than the capture number threshold t2, the control unit 90 determines that the strength P of the radio wave received from the mobile phone base station in communication with the communication unit 30 is equal to or greater than a predetermined threshold (third threshold) t3. It is determined whether or not (see step S16 in FIG. 3).
The predetermined threshold t3 is set to a value larger than 0 and smaller than the strength threshold t1 of each mobile phone base station set in the base station database DB1.
The determination in step S16 may be made immediately when the satellite acquisition number n is not higher than the acquisition number threshold t2, but during the fourth time (for example, 10 seconds), the satellite acquisition number n is not higher than the acquisition number threshold t2 After the state continues, the determination in step S16 may be performed.

  When the strength P of the radio wave received from the mobile phone base station in communication with the communication unit 30 is equal to or greater than the predetermined threshold t3, the control unit 90 determines the position of the mobile phone base station (or a predetermined position in the vicinity thereof). ) As the position of the portable terminal 1 (third position specification, see step S17 in FIG. 3).

  In this case, even under conditions where accurate positioning information can not be obtained by satellite positioning, it is possible to identify an approximate position using the position of a nearby base station.

  In addition, it is possible to compare the set threshold (intensity threshold t1 for each base station, acquisition number threshold t2, predetermined threshold t3) with the measurement result (intensity P of received radio wave, number n of acquired satellites). It can be determined whether or not the first position specification or the third position specification is to be performed. For this reason, it becomes possible to perform positioning which supplements specification of the position based on satellite positioning by simple comparison operation.

  Further, the strength P is detected in the normal communication between the communication unit 30 in the portable terminal 1 and the base station, and the number n of captured satellites is the normal number of the satellite radio wave receiving unit 50 in the portable terminal 1 and the satellites. There is no need to install special hardware on the portable terminal 1 in order to obtain such information because it is detected in radio wave reception, and the first position specification or the like can be performed simply by executing software (position specifying program). It can be determined whether the third position specification is to be performed.

  If the strength P of the radio wave received from the mobile phone base station in communication with the communication unit 30 is not the predetermined threshold t3 or more, the previously identified position within the second time (for example, one hour) (first position The position specified by the specification or the second position specification or the third position specification) is set as the position of the portable terminal 1 (fourth position specification, see step S18 in FIG. 3).

  When the strength P of the radio wave received from the base station in communication state is weak, it is not appropriate to set the position of the base station as the position of the mobile terminal 1 because the mobile terminal 1 and the base station are apart. Although the possibility is high (the error is large), the position information obtained in the immediately preceding first position identification etc. is not the latest position information because it is a relatively small error, but it is obtained in the immediately preceding position identification. It is possible to identify the approximate position using the specified position.

The position (current position) specified in any one of the first position specification in step S13, the second position specification in step S15, the third position specification in step S17, and the fourth position specification in step S18 based on the map database DB2. Is displayed on the display unit 40 (see FIG. 4).
In addition, if it can not communicate with the positioning satellite or the base station, but can communicate with the base station but is separated and the intensity P of the radio wave is weak, etc., none of the conditions of the first position specification to the fourth position specification is satisfied It may be configured to display that information can not be identified.

In addition, it is desirable that the specified position is displayed on the map by a display method (display method in which colors are different or display method in which characters are described by characters) different for each type of position specification.
For example, with the first color (for example, blue) and the radius of the ring 41 indicating the error range being small, the position specified in the first localization is displayed, and the second color (for example, green) and the error range And the position specified in the second position specification is displayed with the radius of the ring 41 indicating the middle being a third color (for example, red) and the radius of the ring 41 indicating the error range is large. It is considered that the position specified by the third position specification is displayed, and the position specified by the fourth specification is displayed in a state where the fourth color (for example, black) and the radius of the ring 41 indicating the error range is large. Be
In addition, an area 43 indicating the type of position specification by characters may be displayed.

  This makes it possible to easily visually identify which method has been used for localization.

  In addition, information (including the type of position specification) regarding the specified position is transmitted to a server (not shown) that provides position information via the communication unit 30.

  In the present embodiment, the position specifying program is installed in the recording unit 20 of the portable terminal 1 and the control unit 90 of the portable terminal 1 performs the first to fourth position identifications. A location specification program may be installed on a communicatable server, and the server may perform the first to fourth locations.

Reference Signs List 1 mobile terminal 10 operation unit 20 recording unit 30 communication unit 40 display unit 41 ring 43 area indicating the type of position specification by characters 50 satellite radio wave receiving unit 90 control unit DB1 base station database DB2 map database

Claims (12)

Satellite radio reception unit that receives radio waves from positioning satellites;
A recording unit which records a base station database including identification information of a base station, position information of the base station, and information of each base station regarding an intensity threshold;
And a communication unit for communicating with the base station, the mobile terminal comprising:
The base station is fixed at a specific location,
Of the base stations, those in communication with the communication unit are included in the base station database, and among the base stations, the strength of radio waves received from those in communication with the communication unit is the intensity threshold. And the base station database is more than one corresponding to the base station in the base station database, based on position information of one of the base stations which is included in the base station database and in which the communication unit is in communication state. Location of the mobile terminal,
Of the base stations, those in communication with the communication unit are not included in the base station database, or the strength of radio waves received from those in the communication state of the base stations is the strength threshold. And the position of the portable terminal is determined based on the position information of the satellite which has successfully received the radio wave via the satellite radio wave receiving unit and the radio wave transmission time, if it is not more than the one corresponding to the base station in the base station database. Identified ,
The strength threshold for each base station in the base station database is a distance between the mobile station in communication with the communication unit among the base stations and a distance shorter than an error of positioning using the positioning satellite. Is set to the strength of the radio wave received from the base station,
A said intensity threshold, which corresponds to a base station covering a wide area, a said intensity threshold, the Rukoto is set larger value as compared with those corresponding to the base station that covers a small area A mobile terminal characterized by Satellite radio reception unit that receives radio waves from positioning satellites;
A recording number threshold for recording the number of satellites received by the satellite radio wave receiver, which is the number of satellites received, and a predetermined threshold for the radio wave intensity from the base station;
And a communication unit for communicating with the base station, the mobile terminal comprising:
When the number of captured satellites is greater than or equal to the captured number threshold value, the position of the portable terminal is specified based on position information of satellites that can receive radio waves via the satellite radio wave receiver and radio wave transmission time,
The case where the number of captured satellites is smaller than the captured number threshold, and the strength of the radio wave received from a mobile phone base station in which the communication unit is in communication among the base stations is equal to or greater than the predetermined threshold And the position of the mobile terminal is specified based on position information of the mobile phone base station in which the communication unit is in communication among the base stations.
The recording unit records a base station database including identification information of the base station, position information of the base station, and information on each base station regarding a threshold strength value.
Of the base stations, those in communication with the communication unit are included in the base station database, and among the base stations, the strength of radio waves received from those in communication with the communication unit is the intensity threshold. The mobile phone capable of receiving radio waves when the number of captured satellites is greater than or equal to the capture number threshold or greater than the predetermined threshold if the number is greater than or equal to that corresponding to the base station in the base station database Even when there is a base station, the position of the portable terminal is specified based on position information of one of the base stations which is included in the base station database and the communication unit is in communication state,
A mobile terminal characterized in that any value corresponding to the mobile phone base station in the base station database is set to a value larger than the predetermined threshold. The strength threshold value for each of the base stations in the base station database is a value of the radio wave received from the base station when the distance between the portable terminal and one of the base stations in communication with the communication unit is 10 m or less. The mobile terminal according to claim 2 , characterized in that the strength is set. The base station is at least one of a wireless LAN access point and a wireless PAN access point, and the mobile phone base station.
Communication between the communication unit and the access point of the wireless LAN is performed without receiving a connection permission notice from the access point of the wireless LAN,
The mobile terminal according to claim 1, wherein the communication between the communication unit and the access point of the wireless PAN is performed without receiving a connection permission notification from the access point of the wireless PAN. The base station is at least one of a wireless LAN access point and a wireless PAN access point, and the mobile phone base station fixed at a specific location.
Communication between the communication unit and the access point of the wireless LAN is performed without receiving a connection permission notice from the access point of the wireless LAN,
The mobile terminal according to claim 2, wherein the communication between the communication unit and the access point of the wireless PAN is performed without receiving a connection permission notification from the access point of the wireless PAN.   In the case where the number of captured satellites is smaller than the captured number threshold, and the strength of the radio wave received from the mobile phone base station in which the communication unit is in communication among the base stations is not greater than the predetermined threshold The mobile terminal according to claim 2, wherein the position specified within the predetermined time and determined last time is the position of the mobile terminal. The display device further comprises a display unit for displaying the specified position,
The display unit is characterized in that the specified position is displayed on the map by at least one of a display method in which colors are different for each type of position specification and a display method in which the type of position specification is indicated by characters. The portable terminal according to claim 2. Satellite radio reception unit that receives radio waves from positioning satellites;
A captured number threshold value relating to the number of captured satellites, which is the number of satellites received by the satellite radio wave receiving unit, a predetermined threshold value relating to the radio wave intensity from the base station, identification information of the base station, and position information of the base station A recording unit for recording a base station database including information on each base station regarding an intensity threshold;
And a communication unit for communicating with the base station, the mobile terminal comprising:
The base station is fixed at a specific location,
Of the base stations, those in communication with the communication unit are included in the base station database, and among the base stations, the strength of radio waves received from those in communication with the communication unit is the intensity threshold. And if the base station database is more than or equal to that corresponding to the base station, the base station is included in the base station database and the communication unit is in a communication state based on the position information of the base station database. Location of the mobile terminal,
Of the base stations, those in communication with the communication unit are not included in the base station database, or the strength of radio waves received from those in communication with the communication unit of the base stations is The radio wave is received through the satellite radio wave receiver when the threshold is not higher than that corresponding to the base station in the base station database and the number of captured satellites is larger than the threshold for the number of acquisitions. The position of the portable terminal is identified based on the position information of the completed satellite and the radio wave transmission time,
Of the base stations, those in communication with the communication unit are not included in the base station database, or the strength of radio waves received from those in communication with the communication unit of the base stations is In the case where the strength threshold is not more than that corresponding to the base station in the base station database, the number of captured satellites is smaller than the capture number threshold, and the communication unit in the base station is in communication state When the strength of the radio wave received from a certain mobile phone base station is equal to or higher than the predetermined threshold value, the mobile terminal of the mobile terminal is determined based on the position information of the mobile phone base station in which the communication unit is in communication. The location is determined
A mobile terminal characterized in that any value corresponding to the mobile phone base station in the base station database is set to a value larger than the predetermined threshold. A satellite radio wave receiver for receiving radio waves from positioning satellites; a capture number threshold for the number of captured satellites which is the number of satellites received by the satellite radio wave receive unit; a predetermined threshold for radio wave intensity from a base station; A portable terminal comprising: a recording unit for recording identification information of the base station, position information of the base station, and a base station database including information on each base station regarding an intensity threshold; and a communication unit for communicating with the base station A method of locating the
Of the base stations, those in communication with the communication unit are included in the base station database, and among the base stations, the strength of radio waves received from those in communication with the communication unit is the intensity threshold. And the base station database is more than one corresponding to the base station in the base station database, based on position information of one of the base stations which is included in the base station database and in which the communication unit is in communication state. A first position specifying step of specifying the position of the portable terminal;
Of the base stations, those in communication with the communication unit are not included in the base station database, or the strength of radio waves received from those in communication with the communication unit of the base stations is A radio wave is received via the satellite radio wave reception unit when the strength threshold is not higher than that corresponding to the base station in the base station database, and the number of captured satellites is greater than or equal to the acquired number threshold. A second position specifying step of specifying the position of the portable terminal based on position information of the completed satellite and radio wave transmission time;
Of the base stations, those in communication with the communication unit are not included in the base station database, or the strength of radio waves received from those in communication with the communication unit of the base stations is In the case where the strength threshold is not more than that corresponding to the base station in the base station database, the number of captured satellites is smaller than the capture number threshold, and the communication unit in the base station is in communication state When the strength of the radio wave received from a certain mobile phone base station is equal to or higher than the predetermined threshold value, the mobile terminal of the base station on the basis of the position information of the mobile phone base station in which the communication unit is in communication. Providing a third locating step for locating the position;
A position specifying method characterized in that a value larger than the predetermined threshold is set as the strength threshold in the base station database and corresponding to the mobile phone base station. A satellite radio wave receiver for receiving radio waves from positioning satellites; a capture number threshold for the number of captured satellites which is the number of satellites received by the satellite radio wave receive unit; a predetermined threshold for radio wave intensity from a base station; A portable terminal comprising: a recording unit for recording identification information of the base station, position information of the base station, and a base station database including information on each base station regarding an intensity threshold; and a communication unit for communicating with the base station Location program for
Of the base stations, those in communication with the communication unit are included in the base station database, and among the base stations, the strength of radio waves received from those in communication with the communication unit is the intensity threshold. And the base station database is more than one corresponding to the base station in the base station database, based on position information of one of the base stations which is included in the base station database and in which the communication unit is in communication state. A first position specifying step of specifying the position of the portable terminal;
Of the base stations, those in communication with the communication unit are not included in the base station database, or the strength of radio waves received from those in communication with the communication unit of the base stations is A radio wave is received via the satellite radio wave reception unit when the strength threshold is not higher than that corresponding to the base station in the base station database, and the number of captured satellites is greater than or equal to the acquired number threshold. A second position specifying step of specifying the position of the portable terminal based on position information of the completed satellite and radio wave transmission time;
Of the base stations, those in communication with the communication unit are not included in the base station database, or the strength of radio waves received from those in communication with the communication unit of the base stations is In the case where the strength threshold is not more than that corresponding to the base station in the base station database, the number of captured satellites is smaller than the capture number threshold, and the communication unit in the base station is in communication state When the strength of the radio wave received from a certain mobile phone base station is equal to or higher than the predetermined threshold value, the mobile terminal of the base station on the basis of the position information of the mobile phone base station in which the communication unit is in communication. Providing a third locating step for locating the position;
A position identification program characterized in that any value corresponding to the mobile phone base station in the base station database is set to a value larger than the predetermined threshold. A satellite radio wave receiver for receiving radio waves from positioning satellites, a recorder for recording a base station database including identification information of a base station, position information of the base station, and information on each base station regarding an intensity threshold, and the base A position determination method of a portable terminal including a communication unit that communicates with a station,
The base station is fixed at a specific location,
Of the base stations, those in communication with the communication unit are included in the base station database, and among the base stations, the strength of radio waves received from those in communication with the communication unit is the intensity threshold. And the base station database is more than one corresponding to the base station in the base station database, based on position information of one of the base stations which is included in the base station database and in which the communication unit is in communication state. A first position specifying step of specifying the position of the portable terminal;
Of the base stations, those in communication with the communication unit are not included in the base station database, or the strength of radio waves received from those in the communication state of the base stations is the strength threshold. And the position of the portable terminal is determined based on the position information of the satellite which has successfully received the radio wave via the satellite radio wave receiver and the radio wave transmission time, if it is not more than the one corresponding to the base station in the base station database. And a second position specifying step of specifying
The strength threshold for each base station in the base station database is a distance between the mobile station in communication with the communication unit among the base stations and a distance shorter than an error of positioning using the positioning satellite. Is set to the strength of the radio wave received from the base station,
The intensity threshold corresponding to a base station covering a wide area is set to a value larger than that corresponding to a base station covering a narrow area. A method of locating features. A satellite radio wave receiver for receiving radio waves from positioning satellites, a recorder for recording a base station database including identification information of a base station, position information of the base station, and information on each base station regarding an intensity threshold, and the base A position identification program of a portable terminal provided with a communication unit for communicating with a station,
The base station is fixed at a specific location,
Of the base stations, those in communication with the communication unit are included in the base station database, and among the base stations, the strength of radio waves received from those in communication with the communication unit is the intensity threshold. And the base station database is more than one corresponding to the base station in the base station database, based on position information of one of the base stations which is included in the base station database and in which the communication unit is in communication state. A first position specifying step of specifying the position of the portable terminal;
Of the base stations, those in communication with the communication unit are not included in the base station database, or the strength of radio waves received from those in the communication state of the base stations is the strength threshold. And the position of the portable terminal is determined based on the position information of the satellite which has successfully received the radio wave via the satellite radio wave receiver and the radio wave transmission time, if it is not more than the one corresponding to the base station in the base station database. And a second position specifying step of specifying
The strength threshold for each base station in the base station database is a distance between the mobile station in communication with the communication unit among the base stations and a distance shorter than an error of positioning using the positioning satellite. Is set to the strength of the radio wave received from the base station,
The intensity threshold corresponding to a base station covering a wide area is set to a value larger than that corresponding to a base station covering a narrow area. Feature localization program.

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