KR100652713B1 - Methods and apparatus' of searching home system for mobile phone - Google Patents

Abstract

The present invention provides a quick access to the home system search of a mobile terminal. In order to use a mobile communication service, the controller registers a location by a controller that analyzes a command signal applied from a key button unit and receives a wireless unit when a shortened mode is selected. Analyze nearby base station signals, search and access the home system recorded in the core, and register the location.If automatic mode is selected, search for possible system registration from nearby base station signals at intervals set by the timer, and select manual mode. Whenever a request is made to search for a system capable of registering a location that can be registered from a signal of a neighboring base station, and when the mobile terminal registers a location for a mobile communication service, if a short mode is selected, a base station is received nearby. Search the home system from the signal, register the location and automatically When the mode is selected, the timer is driven at predetermined intervals. The process of searching and accessing a registerable system from a base station signal received from the surroundings and relocating the location is repeated at the interval set in the timer unit. In each case, a process of searching and accessing a registerable system from a base station signal received from a neighboring base is configured in a sequence of steps. As a result, the home system is quickly searched and registered, thereby providing home service immediately. There is.

Description

Home system search apparatus and method of mobile terminal {METHODS AND APPARATUS 'OF SEARCHING HOME SYSTEM FOR MOBILE PHONE}

1 is a functional configuration diagram of a general mobile communication system,

2 is a flowchart illustrating a method for searching a home system of a portable terminal according to the prior art;

3 is a functional diagram of a home system search apparatus for a portable terminal according to the present invention;

4 is a flowchart of a method for searching a home system of a mobile terminal according to the present invention;

5 is an explanatory view of key button portion short cut button assignment of the present invention portable terminal.

          ** Explanation of symbols on the main parts of the drawing **

100: wireless unit 110: control unit 120: memory unit

130: key button portion 140: timer portion 150: core portion

The present invention facilitates the home system search registration for the home service of the mobile terminal (UE). In particular, the home system of the mobile terminal providing the home service by quickly performing the home system search and location registration in a shortened mode. Relates to a search apparatus and method.

A mobile communication system uses a limited radio frequency resource to allow a plurality of mobile terminals to simultaneously occupy a wireless communication channel for mobile communication. The mobile communication system is largely divided into a code division multiple access method and a GSM method according to the radio frequency allocation and operation method. .

The GSM (GLOBAL SYSTEM FOR MOBILE COMMUNICATION) mobile communication system operates a limited frequency resource in a TDMA (TIME DIVISION MULTIPLE ACCESS) method, so that a plurality of subscribers (SUBSCRIBER) or a mobile terminal (UE: USER) EQUIPMENT) is a digital method that occupies the corresponding channels simultaneously, moves and communicates, and is a standard method of a mobile communication system developed around the EUROPE region.

Since all of the European countries use a GSM mobile communication system, a mobile terminal (UE) of the same method is used in any country, and a mobile terminal (UE), which has been previously used by a roaming service, is used in another country. Receive mobile communication service while traveling or traveling to

If the mobile terminal (UE) is inconvenient to move, the subscriber's mobile phone number, personal information, operation information, etc. are recorded and stored, and are easily removable and made of a nonvolatile memory such as a flash memory (SIM : SUBSCRIBER IDENTITY MODULE) Remove the card and carry it to your destination.

When the mobile terminal (UE) is separately rented in the corresponding area of the mobile or traveled area, and the portable SIM card is attached and connected, the mobile communication service is immediately provided by a roaming service.

The mobile communication system (PLMN) should always check and track the current position of the mobile terminal (UE) that is moving. The mobile terminal (UE) is initialized when the operating power is switched on (SWITCH ON) and supplied. In the present invention, the current location must be registered with the corresponding mobile communication service provider (PLMN), and the location registration is performed periodically by a predetermined time unit after the location registration (LOCATION REGISTRATION) by the initialization process.

PLMN or PUBLIC LAND MOBILE NETWORK (PLMN) generally forms one country as a service area, and multiple service providers (PLMN) can exist in one country. The service provider (PLMN) using the SM method provides a roaming service by a separate contract.

The mobile communication system registered by the mobile terminal UE is called a home system (HPLMN: HOME PLMN), and a system for providing a mobile communication roaming service by a roaming service contract is called a roaming system (RPLMN: ROAMING PLMN).

TS 23.122 is a standard standard that specifies the location registration of a mobile terminal in the GSM mobile communication system. According to the standard, the mobile terminal searches for the final registration system first, and if the final registration system is not searched, The system HPLMN is searched, and if the home system is not found, all mobile communication systems PLMN configured in the PLMN LIST are sequentially searched.

When the mobile terminal (UE) is located in the service area of the home system, all services provided by the home system can be provided and used, but in the service area of the roaming system, there is a problem in that limited service such as voice communication is provided. There is a problem of paying additional roaming services.

Therefore, when the mobile terminal (UE) is located in the home service area, there is a need to develop a technology for promptly registering a location in the home system so as to receive various low cost home services.

Hereinafter, a home system search method of a portable terminal according to the prior art will be described with reference to the accompanying drawings.

1 is a functional configuration diagram of a general mobile communication system, and FIG. 2 is a flowchart of a method for searching a home system of a mobile terminal according to the prior art.

Referring to FIG. 1, a general mobile communication system will be described. For example, the mobile terminal 10 subscribes and registers with a mobile switching center (MSC) 40. A mobile communication service by a home service is provided while moving freely in a service area 30 formed by a base station (RAN: RADIO ACCESS NETWORK) 20 controlled by an MSC (40). .

The mobile switching center (MSC) 40, including the base station (RAN) 20, controls, monitors and manages and operates the mobile communication system (PLMN) 50 to which the mobile terminal 10 is registered. Called system (HPLMN) 50.

When the mobile terminal (UE) 10 travels to an adjacent country or another country that provides a GSM type mobile communication service, for example, the base station 21 under the control and monitoring of the mobile switching station 41 When moving to the service area 31 to be formed, the mobile communication service is provided by a roaming service.

The mobile communication system 51 providing the roaming service is called a roaming system, and the roaming base station 21 forms the roaming service area 31 under the control and monitoring of the roaming mobile switching center 41.

When the mobile terminal 10 moves to the service area 32 and registers a location, the mobile switching station 42 becomes a roaming mobile switching station 42, and the base station 22 becomes a roaming base station 22 so that the roaming system ( 52).

In order for the mobile terminal 10 to move or travel as described above and receive a roaming service from a roaming system at a current location, a location registration must be performed, and a system for providing a roaming service by the location registration is called a registration system. .

That is, for example, when the mobile terminal 10 registers a location by a home system (HPLMN) 50 and receives a mobile communication service, the home system 50 becomes a home system (HPLMN) and simultaneously registers a system. In another example, when the location registration in the roaming mobile communication system 51 and the roaming service is provided, the roaming system 51 becomes a registration system, and in another example, the location registration in the roaming system 52 When the roaming service is provided, the roaming system 52 becomes a registration system.

The portable terminal 10 records and stores the registered registration system (RPLMN) information connected to the registered home system (HPLMN) and registered in the SIM card.

The mobile terminal 10 initializes when the operating power is switched on and is supplied. In the initialization step, the mobile terminal 10 searches for a mobile communication system (PLMN) having the largest received signal strength and registers a corresponding location. REGISTRATION).

The mobile terminal 10 is provided with a mobile communication service by a home service or a roaming service in a state registered in a mobile communication system (PLMN), and the home service can use all services provided by the system, and the roaming service is Since the service is limited and the roaming cost is added, there is a problem that the usage fee becomes expensive.

Hereinafter, a home system search method of a portable terminal according to the prior art will be described with reference to FIG. 2.

If the user wants to register the location (LOCATION REGISTRATION) to receive the mobile communication service to the mobile terminal 10 (S10), it is determined whether to register the location in the automatic mode (S20), the position in the automatic mode in the determination (S20) In the case of registration, the neighboring systems are searched according to a predetermined order, and the position registration is performed in the system having the largest received signal strength among the found systems (S30).

The predetermined order of searching for the peripheral system is to search the home system first, search the last registered system if it is not found, and list all the systems that receive a signal from the surroundings if the system is not found in the search. In order to register the location by connecting the system in order from the system with the largest signal strength.

After the system registration by the automatic mode is completed, when the set period is reached (S40), the process returns to the second step (S20) and repeats the automatic mode process.

When the location registration in the automatic mode is not performed in the automatic mode determination process (S20), it is determined whether a corresponding command signal for searching in the manual mode is input (S50), and when the manual search command signal is input in the determination (S50), The system is searched from the surroundings in the predetermined order as described above, and the location is registered in the system having the largest received signal strength among the searched systems (S60).

In the prior art having the above-described configuration, since the home system is searched in a predetermined order in a set cycle unit when operating in the automatic mode, even when the home system is located in the home service area by the home system, it becomes a predetermined cycle time. Previously, there was a problem of not being able to connect to the home system.

In addition, there is a problem in that the home system cannot be accessed even when the mobile station moves to the roaming service area for a predetermined period and returns to the home service area.

In the case of operating in the manual mode, there is a problem in that the system is not searched until the manual search is performed again while maintaining the connection state of the connected and manually searched system.

It is an object of the present invention to provide an apparatus and method for searching a home system for a portable terminal which increases the time for using a home service since a specific button is assigned to the portable terminal to quickly search and register a home system at a desired time.

The present invention has been made in order to achieve the above object, the control unit that analyzes the command signal applied from the key button unit is provided integrally to the portable terminal is to register the location to use the mobile communication service, the operation program of the memory unit When the short mode is selected, the wireless station analyzes the received neighbor base station signal, searches and accesses the home system recorded in the core, and registers the location.If the automatic mode is selected, the neighboring base station signal can be registered at intervals set by the timer unit. When the system is searched for location registration and manual mode is selected, the system may search for and register a system that can be registered from neighboring base station signals whenever a search is requested.

In addition, the present invention has been made in order to achieve the above object, the wireless unit for receiving and outputting the base station signals of all the surrounding mobile communication system including the home system and roaming system by the control; A control unit which accesses the wireless unit and searches for a home system by a command signal, or searches and registers a position of a system accessible by an automatic mode and a manual mode; A core unit which accesses the control unit and records and outputs the portable terminal unique number, serial number, and mobile communication operation information including home system information and automatic mode cycle time; A timer unit connected to the control unit and counting and outputting a time set by a control; And a key button unit for inputting a command signal for controlling the system search registration by the automatic mode and the manual mode to access the control unit and search and register the home system.

In addition, the present invention has been made in order to achieve the above object, when the mobile terminal registers the location for the mobile communication service, if the short mode is selected, the location is searched and connected to the home system from the base station signals received in the vicinity, If the automatic mode is selected, the timer is driven at predetermined intervals.The process of searching and accessing the registerable system from the base station signals received from the surroundings is repeated at the interval unit set in the timer unit.If the manual mode is selected, the search command is inputted. Whenever possible, the process of searching for, accessing, and registering a system that can be registered from a base station signal received from a surrounding base station is configured in a series of orders.

In addition, the present invention has been made in order to achieve the above object, the start process for confirming whether to perform a shortcut mode search when registering a location for the communication service of the mobile terminal; A home service process of searching for a home system by receiving a neighboring system signal and registering a connection with a base station having a good reception strength when searching in the short mode; A selection process of determining whether to search the system in the automatic mode when the home system is not short-searched in the starting process; In the process of searching in the automatic mode, the automatic process for driving the timer unit to search, access and register the surrounding systems in a predetermined order; After registering the position in the system in the process checks the counting time of the timer unit characterized in that it comprises a timer process for feeding back to the start process when the set cycle time.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and method for searching a home system of a portable terminal will be described with reference to the accompanying drawings.

3 is a functional configuration diagram of a home system search apparatus of a mobile terminal according to the present invention, FIG. 4 is a flowchart of a home system search method of a mobile terminal according to the present invention, and FIG. Exemplary key button short cut assignments according to an embodiment of the invention portable terminal.

Referring to FIG. 3, the home system search apparatus of the mobile terminal according to the present invention will be described. The controller 110 analyzing the command signal applied from the key button unit 130 integrally provided in the mobile terminal for mobile communication is In order to use the mobile communication service by registering the location, when the short mode is selected by the operation program of the memory unit 120, the wireless base station 100 analyzes the received neighbor base station signal and records the home base recorded in the core unit 150. Search and access the system and register the location. If the automatic mode is selected, the timer unit 140 searches and registers the system that can be registered from the neighboring base station signal at the set period. The system is configured to search for and register a system that can be registered from a base station signal.

According to the present invention having the above-described configuration, the home system retrieval apparatus of the portable terminal includes base stations of all the surrounding mobile communication systems (PLMN) including the home system (HOME PLMN) and the roaming system (ROAMING PLMN) under the control. The signal is wirelessly received and output, and the home system is searched from the neighboring base station system under the control of the controller 110, and when the base station signal of the home system is not searched, The wireless unit 100 to output,

By accessing the wireless unit 100 and searching for a home system by a command signal or by searching for a location accessible by an automatic mode and a manual mode, and registering the location, the button selected by the key button unit 130 is used for home system search. When the command signal is inputted from the shortcut button, the controller 100 controls the wireless unit 100 to receive a base station signal located in the vicinity, determines whether the search is performed in comparison with the home system information recorded in the core, and the key button unit ( When the system search registration command in the automatic mode is applied from 130, the peripheral system is searched and registered in a predetermined order according to the timer setting cycle time of the core unit 150, and the system in the manual mode is received from the key button unit 130. When a search registration command is authorized, when a search command is input, it controls and goes through a process of searching for and registering a nearby system in a predetermined order. The control unit 110 to operate the city,

When a shortcut button signal for accessing the control unit 110 and instructing search registration of the home system is input, a series of processes for quickly searching and registering the home system from the surroundings and searching and registering the system from the surroundings by the automatic mode and the manual mode A memory unit 120 for storing and outputting a program for controlling a series of processes;

A key button unit 130 connected to the control unit 110 and inputting a command signal for controlling the system search registration by the automatic mode and the manual mode and the shortcut mode for searching and registering the home system;

A timer unit 140 connected to the controller 110 and counting and outputting a time set by a control;

The controller 110 is connected to the controller 110 and records and outputs the portable terminal unique number, serial number, and mobile communication operation information including home system information and automatic mode cycle time, and is unique to the portable terminal under the control of the controller 110. Core part 150 for recording, storing and outputting mobile communication system operation information, including telephone number, electronic serial number, user identification information, home system information, location registered system information, and timer setting cycle time information in automatic mode. This configuration is included.

Hereinafter, according to the present invention having the configuration described above, a home system search apparatus of a portable terminal will be described in detail with reference to the accompanying drawings.

The mobile terminal for mobile communication is called a registered system, a home system, and can use all mobile communication services provided at normal rates in the service area formed by the home system.

Although the mobile terminal is not registered to register, the system for providing a roaming service is called a roaming system, and the roaming service does not use any mobile communication service provided at the same time that a roaming charge is additionally added.

Therefore, in the service area capable of accessing the home system, it is advantageous for both subscribers and service providers to register a location in the home system and provide home services. .

When the operating power is supplied, the controller 110 of the portable terminal reads and loads a program and data for searching for a home system and registering a location, including an operation program, from the memory unit 120, and thus, enters an operation standby state. Monitor wealth

In order for the portable terminal to receive a mobile communication service, a location registration should be performed in a home system or a roaming system, and the location registration is updated by a command signal applied from the key button unit 130 (UPDATE). There is a short mode and a manual mode to perform, and is set by the command applied from the key button unit 130, there is an automatic mode to perform the update in the unit of the cycle time counted by the timer unit 140 (COUNT).

That is, the controller 110 monitors the key button unit 130 and determines whether the command signal applied for location registration is the short mode, the automatic mode, or the manual mode.

The key button unit 130 designates a specific button among a plurality of buttons provided so that a short mode command signal is input. For example, referring to FIG. 5, a key button having a "*" mark or , "#" Designation key button, or "HUTCH" designation key button, "HUTCH" can be used for the WAP (WIRELESS APPLICATION PROTOCOL) control to connect the Internet (internet) to the mobile terminal Function key.

As described above, since the designated key button of the key button unit 130 has a previously assigned command, a long pressing state is detected and used as a corresponding command signal input for position registration.

In one embodiment, when the control unit 110 detects and analyzes the input of the corresponding key button provided in the key button unit 130 as described above and determines the short mode, the control unit 110 controls the wireless unit 100. By activation control to wirelessly receive the signals of all the mobile communication system base stations received from the surroundings, and reads and compares the information of the home system stored in the core unit 150, and checks whether the base station signal of the home system is received.

When the control unit 110 searches for a base station signal of the home system, the wireless connection is made, and operation information such as a unique telephone number (ID) and an electronic serial number (ESN) of the mobile terminal stored in the core unit 150 is wirelessly transmitted to the base station. In the case of transmitting and registering a location, and searching a large number of signals from the home system base station, wireless access is made to the base station having the greatest intensity of the received signal, thereby registering the location as described above, thereby providing home service.

However, when the home system is not found in the reduced mode, the controller 110 switches to the automatic mode, drives the timer, and repeatedly activates the wireless unit in a predetermined cycle time unit, and receives mobile communication from the surroundings. All signals received by the base station are wirelessly received, searched in a predetermined order such as a home system, a registered system, a roaming system, and the like, and a location is registered by accessing the searched system, thereby enabling a mobile communication service.

That is, in the short mode, only the home system is searched, and when the home system is searched, the process until the location registration is performed in a sequence of steps. In the automatic mode, the system searched around is either a home system or a roaming system. Location registration is performed by wireless access to a base station having the best signal strength, and the location registration is repeatedly updated at each time period set in the timer unit 140.

When the cycle time of the timer unit 140 is set to, for example, 6 minutes, in the automatic mode, the home system is searched in units of 6 minutes, and when the home system is not found, the roaming system having the best signal strength is obtained. Search for a base station and register its location.

In the automatic mode, since the key button assigned to the key button unit 130 is inputted, the automatic mode may be set from the beginning.

In another embodiment, when a key button assigned to the key button unit 130 in the manual mode is input and recognized by the control unit 110, the control unit 110 may only home when the manual mode key button is input. If the system is searched and the home system is not found, the base station of the roaming system having the best signal strength is searched for the location registration and the termination is completed.

That is, in the manual mode, since the system is searched and registered only when a command signal is inputted by the corresponding key button input, the mobile communication service of the registered system is continuously used.

Accordingly, the present invention uses the short mode to immediately search for a service area of the home system at a desired time point, and if the home system is found, the user is quickly registered and provided with a home service. There is an advantage of utilizing all the mobile communication services provided.

In addition, when the home system is not searched by the shortened mode, the automatic mode is switched to search the home system and register the location by repeating the cycle time unit set in the timer unit 140.

Hereinafter, the home system searching method of the portable terminal will be described with reference to FIG.

When a mobile terminal for mobile communication registers a location for a mobile communication service, if a shortened mode is selected, the home system is searched and connected to a home system from a base station signal received from the surroundings, and if an automatic mode is selected, a timer is driven at a predetermined interval. Repeat the process of retrieving and accessing the registerable system from the received base station signal at the interval unit set in the timer unit.If the manual mode is selected, the system capable of registering from the base station signal received from the surroundings is input whenever the search command is input. The process of retrieving, accessing, and registering a location is made up of a series of steps.

According to the present invention as described above, the home system search method of the mobile terminal is to determine whether to perform a shortcut mode search when the location registration for the communication service of the mobile terminal, the location for the mobile terminal using the mobile communication service Determining whether to register (S100); When the location registration for the mobile communication service in the step (S100), the start process consisting of the step (S110) of determining whether to search the home system in a shortened mode,

When searching in the short mode during the start process, receiving a system signal of the surroundings to search for a home system and registering access to a home system base station having a good reception strength. Performing wireless reception (S120); Analyzing the base station signal received in step S120 to determine whether the home system is searched, and if not, proceeding to a selection step S130; When the home system is retrieved from the neighboring base station radio signal in the step (S130), the home service process comprising the step of wirelessly accessing the home system base station having the best reception strength and registering the location for the mobile communication service (S140);

A selection process (S150) of determining whether to search the system in an automatic mode when the home system search is not shortened in the start process (S110);

When searching in the automatic mode in the selection process (S150), driving the timer unit, and searching and accessing and accessing a nearby system according to a predetermined order, and counting the set time by driving the timer unit (S160); The mobile terminal of step S160 searches for system signals received from the surroundings in a predetermined order and wirelessly connects to a selected base station of a home system or a selected base station of a roaming system and registers a location for a mobile communication service (S170). Automatic process that takes place,

After registering the position of the mobile terminal in the system in the automatic process, and checks the counting time of the timer unit when the set cycle time is returned to the start process (S110) and the timer process (S180),

If the system does not search in the automatic mode in the selection process (S150), a manual process (S190) for determining whether a search command by the manual mode is input;

When the search command in the manual mode is input in the manual process (S190), it is a configuration consisting of a registration process (S200) of receiving and searching for a peripheral system signal in a predetermined order and accessing the selected base station and registering a location.

Hereinafter, according to the present invention having the above configuration, a home system search method of a mobile terminal will be described in detail with reference to the accompanying drawings.

Since the controller 110 of the portable terminal needs to register a location in order to use a mobile communication service, when operation power is first applied, the controller 110 sets a state for location registration (S100), and a shortcut mode is set for the location registration. It is determined whether (S110).

When it is set to the short mode in the determination (S110), the controller 110 controls the activation of the radio to receive all of the mobile communication base station signals received in the vicinity (S120), and recorded in the core 150 Since the home system information is read and compared with the received base station information, it is determined whether the home system is searched (S130).

When the home system is found in the determination (S130), the wireless system is connected to the base station and recorded in the core unit 150, and includes a unique telephone number (ID) and an electronic serial number (ESN) assigned to the mobile terminal. Since the operation information is transmitted wirelessly (S140).

If the home system is not found in the determination process (S130) and if the short mode is not determined by the start process (S110), the controller 110 determines whether the automatic mode is set (S150). .

When the automatic mode is set in the determination (S150), the timer unit 140 is activated and driven by the control of the control unit 110, so that the predetermined time is set (S160), and the activated wireless unit 100 is activated. Searches for base station information received from the surroundings in a predetermined order.

The predetermined order is recorded and stored in the core unit 150, and the portable terminal searches in the order of the registered home system and the recently registered system, and if the search is not performed, the system having the best received signal strength, that is, Then, the roaming system is connected to wirelessly transmit operation information such as a unique telephone number (ID) and an electronic serial number (ESN) of the mobile terminal and proceed with location registration (S170).

The control unit of the process (S170) determines whether the predetermined cycle time set in the timer unit 140 is counted (S180), and if the cycle time is counted, it returns to the start process (S110) and the selection process (S150). Repeat).

If the automatic mode is not set in the selection process (S150), if the manual mode is set, it is determined whether a command signal of the key button unit 130 for controlling to search for the set manual mode is input (S190). If a command signal for searching in the manual mode is input in step S190, the signal received from the surroundings by the activated wireless unit 100 is analyzed in a predetermined order as described above to search for and register the location (S200).

That is, according to the present invention of the above configuration, in the location registration process for the mobile terminal to receive a mobile communication service, if a command signal in a shortened mode is input, it is determined whether a home system is searched by analyzing a base station signal currently received in the vicinity. If the home system is found, the system registers the location on the home system quickly. If the home system is not found, the system proceeds to the automatic mode.

The automatic mode repeats the predetermined time period set by the timer unit 140 to determine whether a signal from the home system base station is received from the surrounding area, and updates the location registration to the base station having the largest signal strength, thereby providing a mobile communication service. The manual mode receives a mobile communication service by updating a registration of a base station only when a search command is applied.

Therefore, the present invention, by using the short-mode key button provided in the key button unit, quickly confirms whether the home system is searched from the current surrounding environment, and if the home system is searched for location registration, the home service can be quickly There is an advantage to use.

According to the present invention, the key button of the shortcut mode is assigned to the key button of the mobile terminal, and when the key button is selected and input, the base station information received from the surroundings is quickly analyzed to search the home system and register the location. Therefore, there is an industrial use effect of providing home service immediately.

In addition, when the short mode control command signal is input, the home system is immediately searched and registered, thereby providing a convenient and low-cost home service quickly, thereby improving the reliability of system operation.

Claims (12)

The control unit that analyzes the command signal applied from the key button unit integrally provided in the portable terminal is used to register the location and use the mobile communication service. When the short mode is selected by the operation program of the memory unit, the neighboring base station received by the wireless unit is selected. Analyze the signal, search and access the home system recorded in the core, and register the location.When the automatic mode is selected, the system registers and registers a system that can be registered from neighboring base station signals at intervals set by the timer.If the manual mode is selected, the search is performed. The apparatus for searching a home system of a portable terminal, characterized in that it is configured to search for a registerable system from neighboring base station signals whenever a request is made. A wireless unit for wirelessly receiving and outputting base station signals of all mobile communication systems including the home system and the roaming system by the control; A control unit for accessing the wireless unit and searching for a home system by a command signal or registering and searching for a system accessible by an automatic mode and a manual mode; A core unit connected to the control unit and recording and storing the mobile terminal unique number, serial number, and mobile communication operation information including home system information and automatic mode cycle time; A timer unit connected to the control unit and counting and outputting a time set by a control; And a key button unit for inputting a command signal for controlling the system search registration in the automatic mode and the manual mode to connect to the control unit and search and register the home system. . The method of claim 2, When a shortcut button signal for accessing the control unit and commanding search registration of the home system is input, a series of processes for quickly searching for and registering the home system from the surroundings and a series of searching and registering the system from the surroundings by the automatic mode and the manual mode And a memory unit for recording, storing, and outputting a program for controlling a process. The method of claim 2, wherein the core portion, Under the control of the control unit, mobile communication system operation information is allocated, including a unique telephone number, an electronic serial number, user identification information, home system information, location registered system information of a mobile terminal, and timer setting cycle time information of an automatic mode. A home system retrieval apparatus for a portable terminal, characterized in that it is configured to record, output and store in an area. The method of claim 2, wherein the wireless unit, The mobile terminal is configured to search for a home system from a neighboring base station system under the control of the controller and wirelessly receive and output signals of all base station systems that can be received in the vicinity when the base station signal of the home system is not found. Home system search device. The method of claim 2, wherein the control unit, The button selected in the key button unit is set as a shortcut button for home system search, and when a command signal is input from the shortcut button, the wireless unit is controlled to receive a signal of a base station located in the vicinity, and in contrast with the home system information recorded in the core part. If the system search registration command by the automatic mode is applied from the key button unit, the peripheral system is searched and registered in a predetermined order according to the timer setting cycle time of the core unit. When the system search registration command is inputted, the home system search device of the portable terminal, characterized in that it is configured to control, monitor, and operate a series of processes of searching for and registering a nearby system in a predetermined order when a search command is input. . When a mobile terminal registers a location for a mobile communication service, if a short mode is selected, a home system is searched for access from a base station signal received from a nearby base station, and a location is registered. The process of searching for and accessing a system that can be registered from the base station signal and registering a location is repeated at the interval unit set in the timer unit. The home system search method of a mobile terminal, characterized in that the process of registering the location is made in a series of orders. A start process of checking whether to perform a shortcut mode search when registering a location for a communication service of a mobile terminal; When searching in the short mode in the above process, the home service process for receiving a system signal of the surroundings to search the home system and register access to the base station having a good reception strength, A selection process of determining whether to search the system in an automatic mode when the home system is not short-searched in the starting process; In the case of searching in the automatic mode in the above process, the automatic process of driving the timer unit to search, access and register the surrounding systems in a predetermined order; And a timer process for returning to the start process when the set time is reached by checking the counting time of the timer unit after registering the position in the system. The method of claim 8, A manual process of determining whether a search command by a manual mode is input when the system is not searched in the automatic mode in the selection process; And a registration process of receiving and searching a peripheral system signal in a predetermined order and registering a location by accessing a selected base station in a predetermined order when a search command in the manual mode is input. The method of claim 8, wherein the starting process, Determining whether to register a location for using a communication service by the mobile communication terminal; In the process of registering the location for the mobile communication service, the home system search method of a mobile terminal, characterized in that the process of determining whether to search the home system in a reduced mode. The method of claim 8, wherein the home service process, Receiving all base station radio signals wirelessly when searching in a reduced mode in the start process; Analyzing the base station signal received in the process to determine whether the home system is searched, and if not, proceeding to the selection process; When the home system is searched from the neighboring base station radio signal in the above process, the wireless system accesses the home system base station having the best reception strength and registers a location for a mobile communication service. The method of claim 8, wherein the automatic process, Counting the set time by driving the timer unit when searching for the home system in the automatic mode in the selection process; The portable terminal of the above process consists of retrieving system signals received from the surroundings in a predetermined order and wirelessly accessing the selected base station of the home system or the selected base station of the roaming system and registering a location for a mobile communication service. How to search the home system of the terminal.

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