JP2002152839A - Terminal used for positional information confirmation system at loss of mobile phone and its position specification method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To specify the position of a mobile phone terminal that is lost or stolen and leave the history of the positional information through communications with a mobile phone company or a user without making an external notice of transmission/reception state. SOLUTION: A phone makes a call to a terminal 2 (#2) and transmits a prescribed password to the terminal 2 (#8) to set the terminal 2 to a missing mode (#10). When the missing mode is set (YES in #14) in an incoming call waiting state thereafter, the call is automatically received without generating a ringer tone at the arrival of the incoming call (#15), the current position of the terminal 2 or a criminal is specified from the incoming call history, and the history of the positional information is left (#17).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to identify the position of a portable telephone terminal by communicating with a lost or stolen portable telephone terminal and to keep a history of terminal position information. The present invention relates to a terminal used in a position information confirmation system for a mobile phone, and a position specifying method thereof.

[0002]

2. Description of the Related Art In recent years, with the development of electronic technology and communication technology, portable telephone terminals (hereinafter abbreviated as terminals) can be made smaller and have more functions, and have rapidly spread. Terminals are portable because there is no physical connection such as a line, so accidents such as theft or loss may occur, and stolen terminals are used for crimes or used illegally. There was a case. Therefore, as a mobile phone system for preventing such unauthorized use, for example, Japanese Patent Laid-Open No. 9-1
There is one disclosed in Japanese Patent No. 91342. This is composed of a terminal, a location registration terminal equipped with a receiving means, an exchange, and a network service device. The location information of the terminal is compared with the location information of the location information registration terminal, and when there is a difference between the location information. Is to transmit a message to that effect to the location information registration terminal and to stop transmission from the terminal by a transmission stop device provided in the exchange or the network service device, thereby preventing unauthorized use.

Another portable telephone system having a function for preventing unauthorized use is disclosed in, for example, JP-A-63-193623.
Is disclosed in Japanese Patent Application Laid-Open Publication No. HEI 9-203 (1995). This is a command that has a plurality of exchanges accommodating a base unit of a mobile phone terminal, and rejects an arrival / departure signal with the terminal to each exchange in response to notification of theft or loss of the terminal from a user. Is transmitted to stop the transmission / reception.

[0004] Still another portable telephone system is disclosed in, for example, Japanese Patent Application Laid-Open No. 9-205675. This is a simplified mobile phone (Personal Hann) composed of a portable terminal, an indoor base unit and a wireless communication base station.
Dyphone System) system in which a portable terminal slave unit periodically outputs a transmission signal to an indoor master unit or a wireless communication base station to detect the position of the portable terminal slave unit. Such a simplified mobile phone system not only has a telephone function, but also attaches a portable terminal device to valuables,
By being carried by an elderly person or an infant, it is widely used, for example, to facilitate discovery when the valuables are stolen or to facilitate discovery when an elderly person wanders or an infant is lost.

[0005]

However, in the mobile telephone system disclosed in Japanese Patent Application Laid-Open No. 9-191342, the transmission stop device is provided in the network service control device or the exchange. Becomes complicated, which causes a rise in costs required for construction and operation of the system. Further, in addition to the mobile phone terminal, the user must separately install a location registration terminal provided with a receiving means at home or the like, so that there is a problem that the installation work and management of the location registration terminal are complicated. Further, since the outgoing / incoming call is stopped by the transmission stopping device, there is no possibility of being abused by a stolen person (criminal) thereafter, but there is a problem that the culprit or the stolen terminal cannot be tracked. Also, if the user loses the device,
Since the lost location cannot be specified, it is also difficult to rediscover the terminal.

In the portable telephone system disclosed in Japanese Patent Application Laid-Open No. 63-193623, a signal stolen from a stolen terminal is rejected. There is a problem that a stolen terminal cannot be tracked. In addition, when the user has lost the terminal, it is difficult to rediscover the terminal because the lost location cannot be specified.

Further, the one disclosed in Japanese Patent Application Laid-Open No. Hei 9-205675 is a simplified portable telephone system and cannot be applied to a general portable telephone terminal.
Simplified mobile phone systems have extremely limited areas or situations where communication is possible compared to general mobile phone systems, especially in mountain villages away from urban areas or when the terminal is moving at high speed. May not be possible. Therefore, when the criminal lurks in the above-mentioned mountain village or when the vehicle escapes on the highway using a vehicle, communication is not possible, and there is a problem that the pursuit of the terminal or the criminal is interrupted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and switches a lost or stolen portable telephone terminal to a lost mode, and notifies the outside of the incoming / outgoing call state by the lost mode. A terminal used in a position information confirmation system for a mobile phone terminal that can identify the position of the terminal by communicating with a mobile phone company or a user without performing the operation and leave the history of the position information to enable tracking of the terminal. And a method for specifying its location.

[0009]

In order to achieve the above object, the invention of claim 1 refers to a lost or stolen mobile phone terminal (hereinafter, referred to as a mobile phone terminal) by referring to a communication history recorded in a mobile phone company. A terminal used in a mobile phone location information confirmation system having a function of specifying a terminal position by specifying a wireless base station with which the terminal has communicated, is lost or stolen from a mobile phone company or a user's telephone. A lost mode switching unit that switches the terminal to the lost mode by performing a predetermined operation, and a terminal that is switched to the lost mode by the lost mode switching unit. Automatic receiving means for automatically connecting and receiving a line without notifying the receiving status to the outside when a predetermined calling operation is performed from the telephone to the terminal The provided by identifying the radio base station communicate terminal by automatic call unit, in which to be able to leave the history of the position information of the terminal.

[0010] In this configuration, the lost or stolen terminal receives a call from the mobile phone company or the user's telephone by the lost mode switching means, and when a predetermined operation is performed by the telephone, the terminal is lost. Switch to lost mode. Thereafter, the terminal switched to the lost mode automatically receives an incoming call when a predetermined call operation is performed by the mobile phone company or the user by the automatic incoming call receiving means.
Normally, in calculating the communication charge, the wireless base station with which the terminal communicated when receiving a call is recorded in the communication history of the mobile phone company. By referring to this communication history, the wireless base station with which the terminal communicated is identified and its wireless The current position of the terminal can be specified from the communicable area of the base station and its history can be left. Further, the automatic incoming call in the lost mode is performed without notifying the receiving state to the outside, so that there is no fear that the culprit will notice. Therefore, the history of the positional information of the terminal can be left without giving the criminal a vigilance. Also,
In the loss mode, the terminal automatically receives an incoming call only when a predetermined calling operation is performed. That is, when a normal call is made from a third party to the terminal, the call is made as usual. Therefore, there is no fear of the criminal being alerted that no call is made. Furthermore, even when the user simply loses the terminal, the present position of the terminal can be specified and the history can be left by the automatic call receiving function of the present invention.

Further, the invention of claim 2 refers to a radio base station with which a lost or stolen mobile telephone terminal (hereinafter abbreviated as terminal) communicates with reference to a communication history recorded in a mobile telephone company. In the terminal used in the mobile phone location information confirmation system having the function of specifying the terminal position, by transmitting to a terminal lost or stolen from the mobile phone company or the user's telephone, The lost mode switching means for switching the terminal to the lost mode by performing the operations described above, and after the terminal is switched to the lost mode by the lost mode switching means, the telephone of the mobile phone company is notified to the outside without informing the outside of the outgoing call state. Automatic transmission means for automatically establishing a line and transmitting a call, and identifying the wireless base station with which the terminal has communicated by the automatic transmission means, thereby locating the terminal. It is that to be able to leave the history of information.

[0012] In this configuration, the lost or stolen terminal is switched to the lost mode in the same manner as in the first aspect of the present invention. Then, the terminal switched to the lost mode automatically makes a call to the mobile phone company by the automatic calling means. Therefore, the wireless base station with which the terminal communicated at the time of calling is recorded in the communication history of the mobile phone company, and the wireless base station with which the terminal communicated is specified by referring to this communication history, as in the invention described in claim 1. The history can be left. In addition, since the automatic transmission in the lost mode is performed without notifying the transmission state to the outside,
There is no fear that the criminal will notice. Therefore, the history of the positional information of the terminal can be left without giving the criminal a vigilance. Further, even when the user simply loses the terminal, the current position of the terminal can be specified and the history can be left by the automatic calling function of the present invention.

[0013] Further, according to the invention of claim 3, a portable telephone terminal having a function of specifying a terminal position by communicating with a lost or stolen portable telephone terminal (hereinafter abbreviated as a terminal) is provided. In a terminal used in the system, a lost mode switching means for transmitting to a terminal lost or stolen from a mobile phone company or a user's telephone and switching the terminal to a lost mode by performing a predetermined operation, and a lost mode After the terminal is switched to the lost mode by the switching means, a GPS (Global Positioning System)
GPS position detecting means for automatically detecting the position information of the terminal by using the terminal, and automatically connecting the line to the mobile phone company or the user without notifying the calling state to the outside and transmitting the signal to detect the GPS position And a position information transmitting means for transmitting the position information detected by the means, so that a history of the position information transmitted by the terminal by the position information transmitting means can be left.

In this configuration, the lost or stolen terminal is switched to the lost mode as in the first aspect of the invention. Then, the terminal switched to the lost mode automatically detects the position information of the terminal by the GPS position detecting means, and automatically transmits the detected position information to the mobile phone company or the user by the position information transmitting means. I do. At present, the error of position detection by GPS is 100m
It is said that. Therefore, even when the receivable area of the wireless base station is a wide area, the position of the terminal can be specified in a narrow area.

Further, according to the present invention, the position information confirmation of a portable telephone having a function of specifying a terminal position by communicating with a lost or stolen portable telephone terminal (hereinafter abbreviated as a terminal) is provided. A loss mode switching means for transmitting a call to a terminal lost or stolen from a mobile phone company or a user's telephone in a terminal used in the system and performing a predetermined operation to switch the mobile phone to a loss mode; After the terminal is switched to the lost mode by the mode switching means, the automatic transmission / reception means for enabling automatic transmission / reception without notifying the transmission / reception state to the outside,
When the terminal communicates with the mobile phone company or the user's telephone by the automatic transmission / reception means, the history of the position information of the terminal can be left.

In this configuration, the lost or stolen terminal is switched to the lost mode in the same manner as in the first aspect of the invention, and the wireless base station communicated by the automatic transmission / reception means is recorded in the communication history of the mobile phone company. Is done. Therefore, by referring to the communication history, the wireless base station with which the terminal has communicated can be specified, the current position of the terminal can be specified, and the history can be left.

According to a fifth aspect of the present invention, a wireless base station with which a lost or stolen mobile telephone terminal (hereinafter abbreviated as terminal) communicates with reference to a communication history recorded in a mobile telephone company. In the method for specifying the terminal position by specifying the terminal, a call is sent to the lost or stolen terminal from the mobile phone company or the user's telephone, and the terminal is switched to the lost mode by performing a predetermined operation. After the terminal is switched to the lost mode by the mode switching step and the lost mode switching step, when a predetermined calling operation is performed on the terminal from the mobile phone company or the user's telephone, without notifying the reception state to the outside. Automatic connection step of automatically connecting and receiving a line,
By specifying the radio base station with which the terminal has communicated in the automatic incoming call step, the history of the position information of the terminal can be left. In this method,
The same operation as the first aspect is obtained.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a mobile phone system having a location specifying function of a mobile phone terminal. The present mobile phone system 1 includes a mobile phone terminal (hereinafter abbreviated as a terminal) 2, a server 3 a and a server 3 of a mobile phone company 3 with which a user who owns the terminal 2 has contracted.
a, a wireless base station 5a-5c connected to a switch (not shown) via a wired line 4, and a stationary telephone 7 connected to a server 3a via a telephone line 8 such as ISDN. I have. The terminal 2 has a loss mode that enables the terminal 2 to be tracked in the event of loss or theft,
The mobile phone company 3 or the user can set the terminal 2 to the loss mode by performing a predetermined calling operation (for example, inputting a password) to the terminal 2.

The server 3a connects the terminal 2 to the stationary telephone 7 via the lines 4, 8 and the exchange. Further, the server 3a has a function of receiving a message from the user when the terminal 2 is lost or stolen and performing a predetermined operation to switch the terminal 2 to the lost mode. Further, the server 3a
The terminal 2 also has a function of recording when and with which wireless base station 5a to 5c the communication was performed as a communication history, and calculating a communication fee of the terminal 2. On the other hand, the wireless base stations 5a to 5c
Are arranged in each area so that a desired area can be communicated, and the communicable areas 6a to
6c can communicate with each other, and can communicate wirelessly with the terminal 2 in the communicable area. Radio base station 5a-
Since the communicable areas 6a to 6c of 5c are known areas,
By referring to the communication history recorded as described above, the current position of the terminal 2 can be limited to any of the communicable areas 6a to 6c.

In the present invention, the terminal 2 or the criminal can be tracked by focusing on this point. The stationary telephone 7 is for making and receiving a telephone call with respect to the mobile phone company 3 or the terminal 2, and uses the stationary telephone 7 normally installed at the user's home. As an alternative to the stationary telephone 7, a mobile phone terminal contracted separately from the terminal 2 or a public telephone may be substituted.

Next, a block diagram of the terminal 2 used in the present system 1 is shown in FIG. The terminal 2 uses a display unit 22 for displaying various information to a user, an operation key, and the like, centering on a control unit 21 that performs various controls of the terminal 2 based on a program stored in a memory 28. Operating unit 23 for the user to operate terminal 2 by means of wireless base station 5
a transmitting and receiving circuit 24 for transmitting and receiving voices and the like, and a ring tone output unit 25 for outputting a ring tone when the terminal 2 receives a call.
A voice input unit 26 for inputting a voice of the user;
A voice output unit 27 for allowing the user to output a voice from a caller, and various programs such as a lost mode program of the terminal 2 are stored, and a password for switching to the lost mode and a telephone number of a mobile phone company are stored. And a memory 28. Thus, the lost mode switching means, the automatic receiving means, the automatic transmitting means and the automatic transmitting / receiving means are realized by the lost mode program and the control section 21.

Next, a processing procedure of the control unit and the stationary telephone relating to switching of the terminal to the lost mode and a processing procedure of the control unit and the server relating to the recording of the history of the positional information of the terminal after switching the lost mode are shown in FIG. I will explain. When the terminal 2 is lost (# 1), a call is made from the stationary telephone 7 to the terminal 2 (# 2), and the called terminal 2 emits a ringtone from the ringtone output unit 25 (#).
3). If the line is concluded by the criminal (YES in # 4), a call with the criminal is enabled (# 5), and the position of the terminal 2 is specified with reference to the communication history (# 1).
7). At this time, it is desirable that the call with the criminal be made, for example, a silent call or a false call so that the criminal does not notice the pursuit. If the line is not concluded by the criminal, or if the terminal 2 is simply lost by the user somewhere and the line is not concluded (NO in # 4), the message of the answering machine is sent to the user's desk phone 7. It is transmitted (# 6). The user who received this message (# 7) sends the password to the terminal 2.
(# 8). This password is composed of, for example, a predetermined number, and the user can input this number from the operation key (dial) of the stationary telephone 7 and transmit it. Here, the predetermined number forming the password is set in advance by the mobile phone company 3 or the user, and
Is stored in the memory 28. The terminal 2 that has received the password (# 9) compares the password with a preset password in the control unit 21, and switches the terminal 2 to the loss mode if the received password is correct (# 10).

Thereafter, if the criminal makes a call using the terminal 2 (YES in # 11), the position of the terminal 2 is specified with reference to the communication history, and the history (log) is recorded. (# 17). If there is no call (#
11, NO), the terminal 2 is placed in a call waiting state (# 12). Thereafter, if there is an incoming call from another telephone (YES in # 13), it is determined whether or not terminal 2 is in the loss mode (# 14). If the mode is the loss mode (YES in # 14), the terminal 2 is automatically received from the ringtone output unit 25 without sounding the ringtone (# 15), and the position of the terminal 2 is specified with reference to the communication history. The history is recorded (# 17). If not in lost mode (#
(NO in 14), if the ringtone is output by the ringtone output unit 25 and the criminal receives it manually (# 16), the position of the terminal 2 is specified with reference to the communication history, and the history is recorded (step 16). # 17). Note that the transmission in # 11 is
It may be performed automatically by a program incorporated in the lost mode. In this case, it is desirable not to notify the outsider so that the criminal does not notice.

As described above, according to the present invention, the lost or stolen terminal 2 can be switched to the lost mode, and can communicate with the mobile phone company 3 or the user's telephone without being noticed by the culprit. At this time, the current position of the terminal 2 can be specified by referring to the communication history recorded in the server 3a, and the terminal 2 or the criminal can be tracked. At this time, if the communication with the terminal 2 is periodically performed, the history of the movement of the criminal can be grasped, so that the arrival point of the criminal after that can be predicted.

The present invention can be variously modified without being limited to the configuration of the above-described embodiment. For example, the ringing of the incoming / outgoing call in the lost mode can be performed by the vibration of the terminal 2 by a so-called vibrator function or the display unit. It may be an operation of notifying the incoming call to the outside by lighting of 22 or some other method, or a combination of these operations.

The outgoing and incoming calls in # 11 and # 13 may be by e-mail, and the terminal 2 applied at that time is not limited to the mobile phone terminal 2 but has a communication function. It may be a portable information terminal.

The terminal 2 has a GPS (Global Positioni).
ng System), and detects the information on the latitude and route of the current position of the terminal 2 by using the position detecting means, and transmits the detected position information to the outside of the mobile phone without notifying the transmission state to the outside. The call may be automatically transmitted to the company 3 or the user. This embodiment is particularly effective when the radio base stations 5a to 5c of the mobile base stations are installed at a distance, and the current position of the terminal 2 is specified to a radius of about 100 m by the GPS position detection function. be able to. In this case, DGPS (Diff
If the erential Global Positioning System is used, the accuracy of position detection is further improved, and the current position of the terminal 2 can be limited to a radius of several meters.

[0028]

As described above, according to the first or fifth aspect of the present invention, a lost or stolen terminal is switched to a lost mode, and a call from a mobile phone company or a user is automatically received. So, the mobile phone company can identify the location of the terminal by identifying the wireless base station with which the terminal communicated, and keep a history of this location information, and can track the terminal or the culprit based on this history become. At this time, the automatic incoming call in the lost mode is made without notifying the receiving state to the outside, so that the history of the position information of the terminal can be left secretly without being noticed by the criminal.

According to the second aspect of the present invention, the lost or stolen terminal is switched to the lost mode and automatically transmitted to the mobile phone company, so that the wireless base station with which the terminal has communicated can be specified. To confirm the location of the device,
The history of the position information can be left, and the terminal or the culprit can be tracked based on the history. The terminal or the culprit can be tracked. At this time, the automatic transmission in the lost mode is performed without notifying the reception state to the outside, so that the history of the position information of the terminal can be secretly left without being noticed by the criminal.

According to the third aspect of the present invention, the lost or stolen terminal is switched to the lost mode, and the current position information of the terminal is detected by the GPS position detecting means. The history of information can be left.

According to the fourth aspect of the present invention, a lost or stolen terminal is switched to a lost mode, and a call is automatically transmitted to and received from a mobile phone company. By specifying, the position of the terminal can be confirmed and the history of the position information can be left, and the terminal or the culprit can be tracked based on this history. At this time, the automatic transmission in the lost mode is performed without notifying the reception state to the outside, so that the history of the position information of the terminal can be secretly left without being noticed by the criminal.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a mobile phone system according to one embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a mobile phone terminal used in the system.

FIG. 3 is a flowchart illustrating a processing procedure of a control unit and a stationary telephone related to switching of a terminal to a lost mode of the same system, and a processing procedure of recording a history of positional information of the terminal after switching the lost mode.

[Explanation of symbols]

Reference Signs List 1 mobile phone system 2 mobile phone terminal 3 mobile phone company 5a, 5b, 5c wireless base station 21 control unit (lost mode switching means, automatic incoming call means,
Automatic transmission means, automatic transmission / reception means) 28 memory (lost mode switching means, automatic reception means,
Automatic calling means, automatic calling / receiving means)

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04M 3/42 103 H04B 7/26 106B H04Q 7/04 C (72) Inventor Atsushi Takagi 7-7 Nakagakiuchi, Daito City, Osaka Prefecture No. 1 Funai Electric Co., Ltd. (72) Inventor Junya Senoo 7-7-1 Nakagakiuchi, Daito-shi, Osaka Funai Electric Co., Ltd. (72) Inventor Takeshi Nakata 7-7-1, Nakagakiuchi, Daito-shi, Osaka Funai Inside Electric Co., Ltd. (72) Inventor Tatsuyoshi Tsuchikawa 7-7-1 Nakagakiuchi, Daito-shi, Osaka Funai Electric Co., Ltd. F-term (reference) CC08 EE11 HH00 HH21 LL00 5K051 AA09 BB05 CC07 DD00 DD15 EE01 EE02 FF02 JJ04 JJ11 LL00 5K067 AA32 BB04 EE02 EE10 EE16 FF03 FF06 FF24 FF27 FF28 FF31 GG01 GG12 HH07 JJ12 HH07 JJ12

Claims (5)

[Claims] 1. A lost or stolen mobile phone terminal (hereinafter, referred to as a mobile phone terminal) by referring to a communication history recorded in a mobile phone company.
A terminal used in a mobile phone system having a function of specifying a terminal position by specifying a wireless base station with which the terminal has communicated) is lost or stolen from the mobile phone company or the user's telephone. A loss mode switching means for transmitting to the terminal and switching the terminal to the loss mode by performing a predetermined operation, and after the terminal is switched to the loss mode by the loss mode switching means, the mobile phone company or the user Automatic receiving means for automatically connecting and receiving a line without notifying the receiving state to the outside when a predetermined calling operation is performed from the telephone to the terminal, and the terminal is communicated by the automatic receiving means. A mobile phone characterized in that a history of terminal location information can be left by specifying a wireless base station. Terminal to be used in the position information verification system of the story. 2. A lost or stolen mobile phone terminal (hereinafter referred to as a mobile phone terminal) with reference to a communication history recorded in a mobile phone company.
A terminal used in a mobile phone system having a function of specifying a terminal position by specifying a wireless base station with which the terminal has communicated) is lost or stolen from the mobile phone company or the user's telephone. A loss mode switching means for transmitting a call to the terminal and switching the terminal to the loss mode by performing a predetermined operation; and after the terminal is switched to the loss mode by the loss mode switching means, notifies the outside of the transmission state. Automatic transmission means for automatically connecting and transmitting a line to a mobile phone company's telephone without performing the communication, and specifying the wireless base station with which the terminal has communicated by the automatic transmission means, thereby providing location information of the terminal. Terminal used in a position information confirmation system for a mobile phone, characterized in that a history of the mobile phone can be left. 3. A terminal used in a mobile phone system having a function of identifying a terminal position by communicating with a lost or stolen mobile phone terminal (hereinafter, abbreviated as a terminal). A lost mode switching means for transmitting to the lost or stolen terminal from the user's telephone and switching the terminal to the lost mode by performing a predetermined operation, and the terminal is set to the lost mode by the lost mode switching means. After switching, the GPS (Global Positioning Sys
tem) using a GPS position detecting means for automatically detecting the position information of the terminal, and automatically connecting the line to a mobile phone company or a user without notifying the calling state to the outside, and transmitting the signal. The GP
A position information transmitting means for transmitting the position information detected by the S position detecting means, wherein a history of the position information transmitted by the terminal by the position information transmitting means can be left. Terminal used for location information confirmation system. 4. A terminal used in a mobile phone system having a function of identifying a position of a terminal by communicating with a lost or stolen mobile phone terminal (hereinafter abbreviated as a terminal). A lost mode switching means for transmitting a call to a lost or stolen terminal from a user's telephone and performing a predetermined operation to switch the mobile phone to a lost mode; and Automatic switching means for automatically making and receiving a call without notifying the outside of the call state to the outside after the switching to the mobile phone company or the user's telephone by the automatic calling and receiving means. The terminal used in the mobile phone location information confirmation system is characterized in that the history of the location information of the terminal can be left by doing so. End. 5. A lost or stolen mobile phone terminal (hereinafter referred to as a mobile phone terminal) with reference to a communication history recorded in a mobile phone company.
In the method of specifying the terminal position by specifying the radio base station with which the terminal has communicated, the mobile phone company or the user transmits a call to a terminal lost or stolen from the telephone, A lost mode switching step of switching the terminal to the lost mode by performing an operation; and after the terminal is switched to the lost mode by the lost mode switching step, a predetermined call to the terminal from a mobile phone company or a user's telephone. When an operation is performed, an automatic incoming call step of automatically connecting and receiving a line without notifying the receiving state to the outside is provided.By specifying the wireless base station with which the terminal has communicated by the automatic incoming call step, A location specifying method for a mobile phone, wherein a history of terminal location information can be left.