JP2002010316A - Mobile communications system and location registration method for mobile radio communications terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a location registration method in accurately for a mobile radio communications terminal. SOLUTION: The mobile communication system consists of a multiple base station on multiple locations, the mobile radio communications terminal to register a located at the base station having larger electric field intensity wave than the prescribed threshold in the base station in the location by receiving a radio wave from the multiple base stations and the process control means to register the location in a neighboring base station by controlling the threshold to the received electric field intensity in the mobile radio terminal through the base station, when is agreed with prescribed condition concerning the obtaining information with the location of the mobile communications terminal/an operation mode from the base station registered a location by the mobile communication terminal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a plurality of base stations,
The present invention relates to a mobile communication system including a mobile communication terminal that receives radio waves emitted by these base stations and performs location registration for a base station whose received electric field strength is larger than a predetermined threshold.
In particular, when a mobile communication terminal that has performed location registration with a base station meets a preset condition, the mobile communication terminal controls the threshold value of the received electric field strength to register the location with a base station closer to the mobile station. The present invention relates to a mobile communication system capable of ascertaining an accurate position of a terminal and a position registration method of the mobile communication terminal.

[0002]

2. Description of the Related Art Conventional PHS (Personal Ha)
In a mobile communication system such as an ndyphone system, when a mobile communication terminal receives a radio wave emitted from a base station and the received electric field strength is larger than a predetermined threshold,
The location registration is performed for the base station.

A conventional mobile communication system using a wireless telephone device disclosed in Japanese Patent Application Laid-Open No. H5-222218 is a conventional mobile communication system in which a mobile communication terminal registers a position with a base station as described above. is there. FIG. 2 is a diagram showing a configuration of a conventional mobile communication system disclosed in the above-mentioned Japanese Patent Application Laid-Open No. H5-222218. In the figure, 11 is a public communication network, 12 is a main unit of a wireless telephone device, 13, 14, and
Reference numeral 15 denotes a wireless base station (base station), each of which is connected to the main device 12 by wire, reference numeral 16 denotes a wireless telephone (mobile communication terminal) having a transceiver for control and communication, and reference numerals 17, 18, and 19 denote wireless base stations. The wireless base stations 13, 14, and 15 can communicate with the wireless telephones 16 in the wireless zones 17, 18, and 19 in the communicable wireless zones set in 13, 14, and 15.

Next, the operation will be described. Wireless telephone 1
Reference numeral 6 denotes a position registered with the wireless base station 13 in the wireless zone 17. The wireless telephone 16 makes a call with the wireless base station 13.
When the mobile station moves to the wireless zone 19 when a call can be received, the wireless base station 15 having the highest received electric field strength is selected from the broadcast signals received from the wireless base station. The station 15 returns a call response to complete the call. At this time, the main device 12 checks whether or not the wireless base station 15 has received the position registration of the wireless telephone 16. If not registered, the main device 12 controls the wireless telephone 16 to register the wireless base station 15 and registers the wireless telephone 16. Is the latest location registered wireless base station. Also, the radio base stations 13, 1
4, 15 are arranged such that the wireless zones 17, 18, 19 overlap to some extent. This means that each wireless zone 17,1
This is to prevent a gap between the wireless telephones 8 and 19 from which the wireless telephone 16 cannot communicate. Therefore, the wireless zone 1
In the overlapping portion of 7, 18, and 19, the location is not always registered with the wireless base station closest to the wireless telephone 16, and the main device 12 cannot grasp the exact location.

[0005]

Since the conventional mobile communication system is configured as described above, there is a problem that it is not possible to grasp the exact position of the mobile communication terminal.

[0008] The above problem will be specifically described. A mobile communication terminal receives a radio wave emitted from a base station and registers a position in the base station which is larger than a predetermined threshold value for the electric field strength of the received radio wave. The intensity is always fluctuating due to the effects of reflection, diffraction, interference, etc., depending on the surrounding environmental conditions (size, material, etc. of the structure). It is not always possible to register the location with the base station. Also, the radio base station 1
Since the wireless zones 17, 18, and 19 of 3, 14, and 15 are arranged so as to overlap to some extent, it is difficult to actually specify the position of the mobile communication terminal because the positional accuracy is about 100 m in radius. Was. For this reason, the accuracy of the position information of the mobile communication terminal is poor, and for example, it is possible to perform safety management (for example, to prevent the user from entering the caution area or guide evacuation) for the user of the mobile communication terminal based on the position information. could not.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. When a mobile communication terminal that has performed location registration with a base station satisfies a preset condition, the reception electric field strength is reduced. It is an object of the present invention to obtain a mobile communication system capable of ascertaining an accurate position of a mobile communication terminal by controlling a threshold value of a mobile communication terminal and registering a position with a base station closer to the base station.

Another object of the present invention is to provide a mobile communication system that can be used as a security management system for managing the safety of a user of a mobile communication terminal based on accurate location information of the mobile communication terminal.

Further, the present invention controls a threshold value of a received electric field strength and causes a base station closer to the base station to register a position, whereby a position registration method of a mobile communication terminal of a mobile communication system for grasping an accurate position of the mobile communication terminal is provided. The purpose is to obtain.

[0010]

SUMMARY OF THE INVENTION A mobile communication system according to the present invention receives a plurality of base stations installed at a plurality of locations, radio waves emitted by the plurality of base stations, and determines a predetermined value for the electric field strength of the received radio waves. A mobile communication terminal that registers its position in a base station that is larger than the threshold value of the mobile communication terminal, and obtains information about the position and / or operation mode of the mobile communication terminal from the base station that the mobile communication terminal registered. When the terminal satisfies the preset conditions, the mobile communication terminal controls the threshold value for the electric field strength of the received radio wave of the mobile communication terminal via the base station so that the mobile communication terminal performs position registration with a closer base station. A processing control unit for changing a wireless communication area in which the terminal registers a position with the base station.

[0011] In the mobile communication system according to the present invention, the processing control means guides the mobile communication terminal, which has registered the position to a base station in the vicinity, to a predetermined position in accordance with conditions set in advance. When it is determined that it is necessary, based on the information on the position of the mobile communication terminal, the mobile communication terminal is automatically notified of the route to the predetermined position via the base station by voice.

[0012] In the mobile communication system according to the present invention, the processing control means receives a notification requesting guidance from a mobile communication terminal that has registered a location to a closer base station to a predetermined location via the base station. And automatically notifies the mobile communication terminal via a base station of a route to a predetermined position by voice based on information on the position of the mobile communication terminal.

[0013] A position registration method for a mobile communication terminal of a mobile communication system according to the present invention includes a plurality of base stations installed at a plurality of locations, a radio wave emitted by the plurality of base stations, and an electric field strength of the received radio wave. And a mobile communication terminal for performing position registration at a base station larger than a predetermined threshold value for the mobile communication terminal, wherein the position of the mobile communication terminal and / or
Alternatively, from the mobile communication terminal management step of acquiring information relating to the operation mode and the information relating to the position and / or operation mode of the mobile communication terminal obtained in the mobile communication terminal management step, the mobile communication terminal relating to this information is determined in advance. A determining step of determining whether the set condition is satisfied; and determining whether the mobile communication terminal receives a radio wave from the mobile communication terminal via the base station when the determined condition is satisfied by the mobile communication terminal. Wireless communication area changing step of changing a wireless communication area in which the mobile communication terminal performs position registration with respect to the base station so as to control the threshold value for the electric field strength of the base station and perform position registration with a base station located closer to the base station. Things.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a diagram showing a configuration of a mobile communication system according to Embodiment 1 of the present invention. In the figure,
1 is communicably connected to a plurality of base stations 3,.
A control device (processing control means) for performing position management of the mobile communication terminal 4 whose position is registered in the base stations 3,..., 3 is connected to the control device 1, and the control device 1 is connected to the base stations 3,.・, 3
A data processing unit (processing control unit) that processes information related to the mobile communication terminal 4 acquired from the mobile communication terminal 4 and determines whether the mobile communication terminal 4 matches condition data stored in advance in a memory (not shown). Means, 3 are communicably connected to the control device 1, and a base station capable of communicating with the mobile communication terminal 4 in its own radio communication area, 4 is connected to the base station 3 by radio, and the base stations 3,. Mobile communication terminals that receive radio waves emitted by the base stations 3 and that register their positions in the base station 3 that are greater than a predetermined threshold value for the electric field strength of the received radio waves; , An effective reception sensitivity area A, 6 which is a wireless communication area in which the mobile communication terminal 4 can perform location registration.
Are the base stations 3,... Changed by the data processing unit 2.
The effective reception sensitivity areas B and 7, which are radio communication areas in which the mobile communication terminal 4 can perform location registration with respect to the radio waves emitted by the mobile communication terminal 3, are voice storage units (processes) for storing voice notifications to the mobile communication terminal 4. Control means). 8 is a display unit (processing control means) for monitoring the status of the mobile communication terminal 4,
Specific conditions can also be entered by the administrator. In Embodiment 1 and Embodiments 2 and 3 described below, examples will be described in which the mobile communication system of the present invention is used as a security management system.

Next, the operation will be described. Control device 1
Is connected to a plurality of base stations 3,..., 3 and divides and covers a wireless communication area of the base stations 3,. It has become. In such a system,
Location registration by the mobile communication terminal 4 is performed by a plurality of base stations 3,.
.., 3 are performed in units of a “paging area” composed of wireless communication areas. Thereby, the control device 1
Grasps the position of the mobile communication terminal 4 in units of "paging area" and, when calling the mobile communication terminal 4, notifies the entire "paging area" of a signal for receiving an incoming call. At this time, when the mobile communication terminal 4 moves and enters a different “paging area”, the mobile communication terminal 4 receives a radio wave emitted from a base station constituting the “paging area” and receives an electric field of the received radio wave. Automatic location registration with a base station greater than a predetermined strength threshold. The base station constituting the “paging area” having received the location registration transmits information on the position and the operation mode of the mobile communication terminal 4 to the control device 1 and exchanges the stored contents with the data processing unit 2 inside the control device 1. The database stored in a memory (not shown) that can be shared is updated. Control device 1 with updated database
Is the mobile communication terminal 4 roughly in units of "paging area"
(Mobile communication terminal management step).

Next, the data processing unit 2 compares the updated contents of the database with a condition preset in the memory, and determines whether or not the mobile communication terminal 4 matches the condition. I do. For example, the data processing unit 2 previously sets an area covered by a specific base station in the memory as a security area, and determines whether the mobile communication terminal 4 is located in this security area, or Notifying the data processing unit 2 that the user of the mobile communication terminal 4 requests the security management from the surrounding situation via the environment (warning mode) (conversely, the security is performed from the data processing unit 2 side to the mobile communication terminal 4) It is determined whether or not mode setting may be performed) (determination step).

In this determination step, when the data processing unit 2 determines that the mobile communication terminal 4 meets the above condition, the mobile communication terminal 4 changes the threshold value for starting the location registration, and the mobile communication terminal 4 changes the threshold value to the closer base station 3. Control is performed to perform location registration (wireless communication area change step).

Specifically, the mobile communication terminal 4 is connected to the base station 3,
Since the threshold value for activating location registration is changed in accordance with the value of the wireless information table received from 3, if the data processing unit 2 determines that the mobile communication terminal 4 matches the above condition, the data processing unit 2 , 3 via the control device 1 to notify the base stations 3,.
3 controls the value of the wireless information table transmitted to the mobile communication terminal 4. At this time, the mobile communication terminal 4 gradually changes the threshold value at which the mobile communication terminal 4 activates the location registration.
The wireless communication areas of the base stations 3,... For example, the data processing unit 2 notifies the base stations 3,...
, 3 gradually changes the radio information table transmitted to the mobile communication terminal 4 so that the threshold value at which the mobile communication terminal 4 activates location registration is controlled so as to gradually increase. Thus, the electric field strength in the wireless communication area of the base stations 3,..., 3 is proportional to the distance between the base stations 3,. The effective reception sensitivity area A5, which is a wireless communication area of the base stations 3, ..., 3 in which registration can be performed, is reduced to the effective reception sensitivity area B6, and the base stations 3, 3, which constitute the "paging area".
The mobile communication terminal 4 performs position registration with the base station 3 closer to the base station.

The mobile communication terminal 4 performs location registration with the base station 3, which is larger than a predetermined threshold value for the electric field strength of the received radio wave, among the base stations 3,... The electric field strength is constantly fluctuating due to the effects of reflection, diffraction, interference, etc., depending on the surrounding environmental conditions (size, material, etc. of the structure). You may have registered. For this reason, conventionally, since the exact position of the mobile communication terminal 4 cannot be grasped from the base station whose position is actually registered, the position is managed for each "paging area". On the other hand, in Embodiment 1 described above, the mobile communication terminal 4 performs position registration with the base station 3 closer to the base station 3 by gradually increasing the threshold at which the mobile communication terminal 4 starts position registration. This base station 3
Communication with the mobile communication terminal 4 at a high electric field strength level can be performed, and the position of the mobile communication terminal 4 can be ascertained from the control device 1 in units of the base station 3, and the position accuracy can be improved. it can.

As described above, according to the first embodiment, a plurality of base stations 3,.
Mobile communication terminal 4 that receives radio waves emitted by a plurality of base stations 3,..., And registers with base stations 3,.
And the base station 3 with which the mobile communication terminal 4 has registered the location.
., 3 to obtain information on the position and / or operation mode of the mobile communication terminal 4, and
Is satisfied with the preset conditions, the base station 3,
The mobile communication terminal 4 controls the threshold value for the electric field strength of the received radio wave of the mobile communication terminal 4 via the mobile communication terminal 4 so that the mobile communication terminal 4 registers the position with the base station 3 closer to the base station 3.
Since the mobile communication terminal 4 is provided with a processing control means including a control device 1 for changing the wireless communication area for performing position registration for the mobile communication terminal 3 and the data processing unit 2, the mobile communication terminal 4 registers the position with a base station closer to the base station. Therefore, the accurate position of the mobile communication terminal 4 can be grasped. Thus, based on the position information of the mobile communication terminal 4, for example, safety management (for example, prevention of entry into a guard zone) can be performed for a user of the mobile communication terminal.

In the first embodiment, the mobile communication terminal 4 changes the radio communication area in which the location registration is performed with respect to the base stations 3,. Although the judgment is received from the processing control means side including the control device 1 and the data processing unit 2 from the mobile communication terminal 4 side.
Alternatively, the wireless communication area may be changed by notifying the processing control means including the above that the preset condition is met.

Embodiment 2 FIG. In the second embodiment, when it is determined that a mobile communication terminal that has registered a position with a base station in a closer position needs to guide to a predetermined position in accordance with preset conditions, Based on information on the position of the communication terminal, the mobile communication terminal is automatically notified of the route to a predetermined position by voice via the base station.

Since the configuration of the second embodiment is the same as that of the first embodiment, different processing operations will be described below. In the same manner as in the first embodiment, the mobile communication terminal 4 performs location registration with the base station 3 closer to the mobile station. At this time, the data processing unit 2 determines whether it is necessary for the mobile communication terminal 4 to meet a condition (different from the first embodiment) preset in a memory (not shown) and to guide the mobile communication terminal 4 to a predetermined position. Determine whether or not. For example, a base station 3 or another mobile communication terminal 4 corresponding to an area that has been set in advance as a security zone has notified that a fire has occurred in this security zone, and a mobile communication terminal located in the security zone has been notified. 4, the data processing unit 2 determines whether it is necessary to evacuate immediately.

When the data processing unit 2 determines that it is necessary to guide the mobile communication terminal 4 to a predetermined position, it corresponds to each of the base stations 3,. Then, the mobile communication terminal 4 is automatically notified by voice of the optimized evacuation guidance route via the control device 1 and the base station 3. Thereby, the user of the mobile communication terminal 4 receiving the voice notification can quickly evacuate according to the voice notification.

That is, since an accurate position of the mobile communication terminal 4 could not be grasped conventionally, an evacuation guidance route optimized for each of the base stations 3,..., 3 is used. However, according to the present invention, since the mobile communication terminal 4 registers the position with the base station 3 in the vicinity, accurate evacuation guidance can be performed.

As described above, according to the second embodiment, the processing control means including the control device 1, the data processing unit 2, the voice storage unit 7 and the like registers the location with the base station 3 which is closer. When it is determined that the mobile communication terminal 4 needs to be guided to a predetermined position in accordance with a preset condition, the mobile communication terminal 4 transmits the information via the base station 3 based on the information on the position of the mobile communication terminal 4. Since the mobile communication terminal 4 is automatically notified of the route to the predetermined position by voice, the mobile communication terminal 4 can be guided to the predetermined position based on the position information of the mobile communication terminal 4. Thus, by applying the present invention to the safety management system, it is possible to promptly guide the user of the mobile communication terminal 4 to evacuate.

Embodiment 3 In the third embodiment, when there is a notification requesting guidance to a predetermined position via a base station from a mobile communication terminal whose position has been registered with a base station located closer, information on the position of this mobile communication terminal On the basis of the,
It automatically notifies a mobile communication terminal of a route to a predetermined position via a base station by voice.

Since the configuration of the third embodiment is the same as that of the first embodiment, different processing operations will be described below. In the same manner as in the first embodiment, the mobile communication terminal 4 performs location registration with the base station 3 closer to the mobile station. Thereafter, the data processing unit 2 voice-analyzes the content notified via the base station 3 and the control device 1 from the mobile communication terminal 4 that has registered the location with the base station 3 located closer. At this time, when it is determined that the notification content from the mobile communication terminal 4 is a content requesting guidance to a predetermined position, the data processing unit 2 updates the information on the position of the mobile communication terminal 4 that has updated the database described above. , An optimal route from the current position of the mobile communication terminal 4 to a predetermined position is obtained and stored in the voice storage unit 7. The voice storage unit 7 automatically notifies the mobile communication terminal 4 of the above route via voice via the base station 3 and the control device 1.

That is, conventionally, it was not possible to grasp the exact position of the mobile communication terminal 4, so that it was not possible to obtain an optimal route from the current position of the mobile communication terminal 4 to a predetermined position. According to the present invention, since the mobile communication terminal 4 performs location registration with the base station 3 closer to the mobile station, an accurate guidance route can be obtained.

As described above, according to the third embodiment, the processing control means including the control device 1, the data processing unit 2, the voice storage unit 7 and the like has registered the location with the base station 3 which is closer. When the mobile communication terminal 4 receives a notification requesting guidance to a predetermined position via the base station 3, the mobile communication terminal 4 transmits the notification to the mobile communication terminal 4 via the base station 3 based on the information on the position of the mobile communication terminal 4. Since the voice to the route to the predetermined position is automatically notified by voice, the mobile communication terminal 4 can be guided to the predetermined position even if requested by the mobile communication terminal 4 side. Thus, by applying the present invention to the safety management system, it is possible to perform safety management adapted to the conditions of the user of the mobile communication terminal 4 and prompt evacuation guidance when evacuation is required.

By applying the configuration of the third embodiment to the second embodiment, the effect of the second embodiment can be obtained, and the effect of the third embodiment can also be obtained. Further, in the above first to third embodiments, examples have been described in which the mobile communication system of the present invention is used as a security management system. However, services based on the position of a mobile communication terminal are provided using the concept of the present invention. The system is not particularly limited to the safety management system. Further, the security management system using the mobile communication system of the present invention described in the first to third embodiments is a public PHS.
The method can be applied to a relatively wide range using the method described above, or a method in a business establishment.

[0032]

As described above, according to the present invention, a plurality of base stations installed at a plurality of locations, radio waves emitted by the plurality of base stations are received, and a predetermined threshold value for the electric field strength of the received radio waves is obtained. A mobile communication terminal that registers its position in a large base station, and information about the position and / or operation mode of the mobile communication terminal from the base station whose position is registered by the mobile communication terminal. When the set condition is met, the mobile communication terminal controls the threshold value for the electric field strength of the received radio wave of the mobile communication terminal via the base station so that the mobile communication terminal performs location registration with a base station closer thereto. Since the mobile communication terminal is provided with processing control means for changing a wireless communication area for performing location registration with respect to the station, the mobile communication terminal performs location registration with a base station closer to the mobile station, so that the exact location of the mobile communication terminal can be ascertained. There is an effect that theft can be. Accordingly, there is an effect that, for example, security management (for example, prevention of entry into a security zone) can be easily performed for a user of the mobile communication terminal based on the position information of the mobile communication terminal.

According to the present invention, the processing control means needs to guide the mobile communication terminal, which has registered the location to a base station in the vicinity, to a predetermined location in accordance with conditions set in advance. When making a determination, the mobile communication terminal is automatically notified of the route to the predetermined position via the base station based on the information related to the position of the mobile communication terminal. Thus, there is an effect that the mobile communication terminal can be guided to a predetermined position.
Thus, by applying the present invention to the safety management system, there is an effect that the user of the mobile communication terminal 4 can be promptly evacuated.

According to the present invention, the processing control means, upon receiving a notification requesting guidance to a predetermined position via a base station from a mobile communication terminal that has registered a position with a base station in a closer position, executes the mobile control terminal. Based on the information related to the location of the communication terminal,
Since the mobile communication terminal is automatically notified of the route to the predetermined position via the base station by voice, the mobile communication terminal can be guided to the predetermined position even if requested by the mobile communication terminal. . Thus, by applying the present invention to the safety management system, there is an effect that it is possible to perform safety management adapted to the conditions placed by the user of the mobile communication terminal and to promptly guide evacuation when evacuation is required.

According to the present invention, a plurality of base stations installed at a plurality of locations and radio waves emitted by the plurality of base stations are received,
A mobile communication terminal location registration method for a mobile communication system, comprising: a mobile communication terminal that performs location registration with a base station that is greater than a predetermined threshold value for the electric field strength of a received radio wave. A mobile communication terminal management step of acquiring information relating to the position and / or operation mode of the terminal, and information relating to the position and / or operation mode of the mobile communication terminal obtained in the mobile communication terminal management step, A determining step of determining whether the mobile communication terminal matches a preset condition,
In this determination step, when the mobile communication terminal satisfies the condition set in advance, the mobile terminal controls the threshold for the electric field intensity of the received radio wave of the mobile communication terminal via the base station and registers the position with the base station closer to the base station. And a wireless communication area changing step of changing a wireless communication area in which the mobile communication terminal performs position registration with the base station. Thus, since the mobile communication terminal performs position registration with a base station closer to the base station, This has the effect that the exact position of the mobile communication terminal can be ascertained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a mobile communication system according to Embodiment 1 of the present invention.

FIG. 2 is a diagram illustrating a configuration of a conventional mobile communication system.

[Explanation of symbols]

1 control device (processing control means), 2 data processing section (processing control means), 3 base station, 4 mobile communication terminal, 5 effective reception sensitivity area A (wireless communication area), 6 effective reception sensitivity area B (wireless communication area) ), 7 voice storage unit (processing control means), 8 display unit (processing control means).

Claims (4)

[Claims] 1. A mobile communication terminal that receives a plurality of base stations installed in a distributed manner, receives radio waves emitted from the plurality of base stations, and registers a location in a base station that is larger than a predetermined threshold value for the electric field strength of the received radio waves. And obtains information on the position and / or operation mode of the mobile communication terminal from the base station with which the mobile communication terminal has registered the location, and matches the condition set by the mobile communication terminal related to this information in advance. When the mobile communication terminal with respect to the base station to control the threshold for the electric field strength of the received radio wave of the mobile communication terminal via the base station and to register the location to a base station closer to the A mobile communication system comprising: processing control means for changing a wireless communication area for performing position registration. 2. The processing control means, when judging that a mobile communication terminal that has registered a position with a base station in a closer position needs to guide to a predetermined position in accordance with a preset condition, 2. The mobile unit according to claim 1, wherein a route to the predetermined position is automatically notified by voice to the mobile communication terminal via the base station based on the information on the position of the mobile communication terminal. Communications system. 3. The processing control means, upon receiving a notification requesting guidance to a predetermined position via the base station from a mobile communication terminal that has registered a position with a base station closer to the base station, processes the mobile communication terminal. 3. The mobile communication system according to claim 1, wherein the mobile communication terminal automatically notifies the mobile communication terminal of a route to the predetermined position via the base station based on the information on the position. system. 4. A mobile communication terminal that receives a plurality of base stations installed at a plurality of locations and radio waves emitted by the plurality of base stations, and registers the position of the plurality of base stations at a base station that is larger than a predetermined threshold value for the electric field intensity of the received radio waves. A location registration method for a mobile communication terminal of a mobile communication system, comprising: acquiring information on a location and / or an operation mode of the mobile communication terminal from the base station with which the location of the mobile communication terminal has been registered. From the information on the position and / or operation mode of the mobile communication terminal obtained in the management step and whether or not the mobile communication terminal according to this information matches the preset condition A determination step of determining whether the mobile communication terminal meets a preset condition in the determination step. A wireless communication area change in which the mobile communication terminal changes a wireless communication area in which a position registration is performed with respect to the base station so as to control a threshold value with respect to an electric field intensity of a communication radio wave and perform a position registration with a base station closer to the base station. And a location registration method for a mobile communication terminal of a mobile communication system.