KR20070029346A - Paging system of mobile communication terminal and method - Google Patents

Abstract

A paging system in a mobile terminal and a method thereof are provided to reduce power consumption due to the transmission and reception of unnecessary signals to and from base stations by realizing soft power-off mode, setting/storing paging conditions for soft power-off mode, and restricting call connections according to paging conditions. If a call connection request signal is received from an arbitrary terminal, an originating MSC, interworking with a paging server, checks whether an ID corresponding to a receiving mobile terminal exists in the first field(S304,S306). In case the ID of the receiving mobile terminal exists in the first field, the originating MSC interworks with the paging server again and checks whether phone number of the originating terminal is a reception-allowable number stored in the second field(S308). If phone number of the originating terminal is a reception-allowable number, the originating MSC interworks with the paging server again and transmits power-off paging instruction signals respectively to base stations of the zones stored in the third and fourth fields(S310). Each base station, receiving the power-off paging instruction signal, immediately transmits an attach request signal to the receiving terminal(S312). The receiving terminal is converted to active mode from soft power-off mode, based on the attach request signal(S314).

Description

Paging System and Mobile Communication Terminal and Method

1 is a block diagram of a paging system according to an embodiment of the present invention,

2 is a structural diagram showing an example of an information field stored in a paging DB according to FIG. 1;

3 is a flowchart of a paging method according to an embodiment of the present invention;

4 is a detailed flowchart of the service subscription and soft power down mode setting step shown in FIG.

<Description of the symbols for the main parts of the drawings>

10: mobile communication terminal 20a,... , 20n: base station

30: mobile switching center 40: paging server

42: paging DB 50: service provider server

60: storage

The present invention relates to a paging system and method for a mobile communication terminal, and more particularly, to a terminal paging system and a method required for processing a terminal incoming call (Call).

The network configuration of the mobile communication system includes a mobile communication terminal, a plurality of base stations communicating with the mobile communication terminal, and a base station controller for controlling the base station.

In addition, the base station controller is via a gateway / Mobile Switching Center (M SC) to connect to the Internet, Public Switched Telephone Network (PSTN) and Public Switched Data Network (PSDN).

When a call connection is requested to a specific mobile communication terminal from the outside, first, a process of finding the location of the mobile communication terminal, that is, paging is required.

Information on the latest location registered by the mobile communication terminal is recorded in the MSC (Mobile Switching Station), and paging is performed using the latest location information.

The mobile communication terminal repeats a process of notifying the MSC of its current location when moving or stopping for a paging process.

On the other hand, when there are many incoming calls to the mobile communication terminal or when an important meeting or work is carried out, the mobile communication terminal is usually turned off.

The conventional mobile communication terminal is excluded from the paging list of the base station at power-off and cannot receive a call.

There are many phones that do not have enough battery power or do not want to make a phone call, but there are times when it is difficult to turn the mobile terminal off or on when there is a phone call that must be made.

When the power of the mobile communication terminal is turned on, unnecessary phone calls are made or the battery is completely consumed.

The present invention has been made to solve the above-described problem, and stores a condition to enable paging in the quasi-power off mode to the paging server and connect the call only when the condition corresponds to reducing the battery consumption and unnecessary The purpose of the present invention is to provide a paging system and method for a convenient mobile communication terminal by eliminating a phone call for a spam call by blocking a call connection of a spam call at the source.

The paging system of the mobile communication terminal according to the embodiment of the present invention for achieving the above object sets a soft power off mode to operate only the reception function of the attach request signal in the power-on state, the soft power supply Registering a paging reception condition in a blocking mode and making a telephone call when receiving an attach request signal; a base station for wirelessly transmitting and receiving communication signals with the mobile communication terminal; When a call connection request signal is received from the terminal of the mobile station, the mobile station determines the paging reception condition for the call, and transmits a power-off paging indication signal to the base station if the reception condition is met. To store the paging receive condition and provide the receive condition to the mobile switching center. It includes a paging server.

According to the paging system of the mobile communication terminal according to an embodiment of the present invention, after setting the soft power down mode, the mobile communication terminal transmits a detach request signal to the base station along with the soft power down mode indication signal, and the base station Recognizes the detach request signal as the final detach call information, characterized in that for transmitting to the paging server.

According to a paging system of a mobile communication terminal according to an embodiment of the present invention, the base station is a base station that receives a detach request signal and a base station to receive paging in a soft power off mode.

According to the paging system of the mobile communication terminal according to an embodiment of the present invention, the base station to receive the paging in the soft power off mode is a base station of a specific area designated by the input of the mobile communication terminal, or a base station of the area frequently visited by the user It is characterized by that.

According to a paging system of a mobile communication terminal according to an embodiment of the present invention, the paging receiving condition is characterized in that the phone number of the other party that allows the reception of the telephone call in the soft power off mode.

According to a paging system of a mobile communication terminal according to an embodiment of the present invention, the paging server is characterized in that it stores and manages information necessary during paging in a soft power off mode including a paging reception condition in a paging DB.

According to the paging system of a mobile communication terminal according to an embodiment of the present invention, the paging DB is characterized in that each mobile communication terminal is provided with a storage area consisting of a plurality of fields for storing different information.

According to a paging system of a mobile communication terminal according to an embodiment of the present invention, the storage area includes a first field in which identification information for identifying the mobile communication terminal is stored, and a telephone call in a soft power off mode corresponding to the reception condition. A second field in which a counterpart's telephone number allowing reception of a call is stored; a third field in which detach call information finally transmitted by the mobile communication terminal is stored; and a specific region in which to receive paging in the soft power off mode. And a fourth field in which information is stored.

According to the paging system of the mobile communication terminal according to an embodiment of the present invention, the identification information of the first field is an electronic serial number (ESN) according to the manufacturing order of the mobile communication terminal, the telephone number assigned to the mobile communication terminal and the mobile communication terminal It is characterized in that any one of the IMEI.

According to the paging system of the mobile communication terminal according to the embodiment of the present invention, the specific area information of the fourth field is characterized in that the user designated by the mobile communication terminal, or the local information frequently visited by the user.

According to a paging system of a mobile communication terminal according to an embodiment of the present invention, the area information frequently visited by the user is area information obtained by analyzing location information periodically transmitted from the mobile communication terminal.

According to a paging system of a mobile communication terminal according to an embodiment of the present invention, when the mobile communication terminal receives the attach request signal, the mobile communication terminal receives a call after accepting the attach request signal by using a wakeup function. It is characterized by returning to the enabled state and making a phone call.

According to a paging system of a mobile communication terminal according to an embodiment of the present invention, a server of a service provider for providing a paging service in the soft power off mode is provided, the user is connected to the service provider server through the mobile communication terminal Subscribe to the paging service by inputting information, the service provider server is characterized in that to provide a paging service only for the mobile communication terminal subscribed to the paging service.

According to the paging system of a mobile communication terminal according to an embodiment of the present invention, the service provider server is characterized in that to provide the paging server with the information required during the service of the information input through the mobile terminal when the service subscription.

In addition, in the paging method of the mobile communication terminal according to an embodiment of the present invention, when the mobile switching center receives a signal for requesting a call connection from an arbitrary originating terminal, the incoming mobile terminal is set up in soft switching mode with the calling terminal in association with a paging server. Searching whether the communication terminal corresponds to a paging reception condition, and when the paging reception condition is met, transmits a power-off paging indication signal to a base station of an area stored as a paging reception specific area in association with a paging server and cuts off the power. Transmitting an attach request signal from the base station receiving the paging instruction signal to the terminating mobile communication terminal; and switching the operation mode from the soft power off mode to the active mode in the terminating mobile communication terminal receiving the attach request signal to the originating terminal. Making a phone call with the customer.

According to the paging method of the mobile communication terminal according to an embodiment of the present invention, when the paging reception condition does not correspond, the mobile switching station sends a message indicating that the operating power of the incoming mobile communication terminal is blocked. The method may further include transmitting to the terminal.

According to the paging method of the mobile communication terminal according to an embodiment of the present invention, the step of searching whether the paging reception condition corresponds to, the corresponding identification information for distinguishing the destination mobile communication terminal is stored in the paging DB stored and managed by the paging server Searching for whether there exists, and if the corresponding identification information exists, searching whether the telephone number of the calling terminal is an allowable telephone number stored in a paging DB.

According to the paging method of the mobile communication terminal according to an embodiment of the present invention, when the corresponding identification information does not exist in the paging DB or the telephone number of the calling terminal is not a reception allowable telephone number, the mobile switching station is called the 'incoming mobile communication. And transmitting a message to the calling terminal informing that the operating power of the terminal is cut off.

According to a paging method of a mobile communication terminal according to an embodiment of the present invention, a service subscription step and a soft power down mode setting step of preparing to provide a paging service in a soft power down mode are further performed before performing the series of steps. It is characterized by including.

According to the paging method of the mobile communication terminal according to an embodiment of the present invention, the service subscription step, the step of subscribing to the paging service by inputting the information required for subscription in the state connected to the service provider server using the mobile communication terminal; And analyzing, by the service provider server, the inputted information and signals, transmitting the necessary information during the actual paging service to the paging server, and storing the transmitted information in the paging DB.

According to the paging method of the mobile communication terminal according to an embodiment of the present invention, the storing of the information in the paging DB, storing the unique identification information for identifying the mobile communication terminal, and paging in the soft power off mode And storing specific telephone information to receive paging in the soft power off mode.

According to the paging method of the mobile communication terminal according to an embodiment of the present invention, the soft power off mode setting step, the operation mode in the mobile communication terminal to set the soft power off mode, and the detach request from the mobile communication terminal Transmitting a signal to the base station together with the soft power down mode indication signal; and receiving a soft power down mode indication signal from the base station receiving the detach request signal and transmitting a detach request signal to the base station. Recognizing a mode, and providing final detach call information to a paging server, and storing the final detach call information by the paging server.

According to a paging method of a mobile communication terminal according to an embodiment of the present invention, the paging receiving base station is one base station that has received the final detach signal from the mobile communication terminal and three base stations of a specific region designated to receive paging; It is characterized by.

According to a paging method of a mobile communication terminal according to an embodiment of the present invention, in the telephone call step, the mobile communication terminal returns to a call reception state after accepting an attach request signal by using a wake-up function. It is done.

First, the operation mode of the mobile communication terminal will be described in order to help the understanding of the present invention.

In general, an operation mode of a mobile communication terminal is classified into a power cut mode, a call standby mode, and an active mode.

The power-off mode refers to a state in which power is not applied to the mobile communication terminal, and processing of a state in which the operation power is cut off so that communication service cannot be received from the mobile switching station is called 'detach processing'. do.

In idle mode, the mobile terminal periodically wakes up and sleeps to check the incoming call when the user does not use the mobile terminal. Only the state is an operation mode that is turned on and off periodically.

The active mode is a mode in which a mobile communication terminal operates mainly with both a transmission / reception and other states turned on for a call with a base station. The operating power is supplied to the mobile communication terminal to register with a mobile switching center and provide a communication service. Receiving is called 'attach processing'.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a paging system according to an embodiment of the present invention.

According to the present invention, in addition to the above three operation modes, before clicking any key provided in the mobile communication terminal 10 while the mobile communication terminal 10 is turned on, the LCD except for receiving the attach request signal is received. It also has a 'soft power-off mode' that prevents the function from working at all.

As shown, the mobile communication terminal 10 includes a mobile communication terminal 10, base stations 20a, ..., 20n, a mobile switching center (MSC) 30, a paging server 40, and a service provider server 50.

The mobile communication terminal 10 registers the location information with the mobile switching center 30 at predetermined intervals while stopping or moving the mobile communication service area, and sets the 'soft power off mode'.

When set to the soft power off mode, the 'detach request' signal is transmitted to the base station along with the 'soft power off mode indication' signal indicating that the mobile terminal is in the soft power off mode. It stores in the paging DB (42).

When the mobile communication terminal 10 receives the 'attach request' signal from the base station in the soft power-off mode, the mobile communication terminal 10 receives the call after accepting the attach request signal by using a wakeup function. Returns to the available state and makes a phone call with the calling party.

In addition, the mobile communication terminal 10 accesses the service provider server 50 to subscribe to the paging service in order to receive the paging service in the soft power off mode, and inputs the necessary information for the paging service to the paging DB 42. Save it.

The base stations 20a, ..., 20n transmit and receive signals wirelessly with the mobile communication terminal 10 and form a mobile communication service area.

In the present invention, the base stations 20a, ..., 20n include, in particular, a base station that has received the final detach signal, and base stations of a specific area designated by an input of the mobile communication terminal 10 or an area frequently visited by a user.

The base station receiving the final detach signal includes the information on the corresponding mobile communication terminal 10 in the final detach call information and transmits it to the paging server 40 to store in the paging DB 42.

The mobile switching center 30 connects with the base stations 20a,..., 20n and stores location information applied from the mobile communication terminal 10.

In addition, when the call connection request signal is generated from the other party corresponding to the allowable telephone number while the mobile communication terminal 10 is in the soft power off mode, power-off paging to the base stations of the region stored in the paging DB 42. By transmitting the indication signal, the base station can transmit the attach request signal to the mobile communication terminal (10).

The paging server 40 is connected to the base stations 20a,..., 20n or the mobile switching center 30 to store and manage paging information necessary for the paging service in the paging DB 42 in the soft power-off mode. 30 to provide paging information.

As shown in FIG. 2, the paging DB 42 is provided with a storage area 60 including four fields 60a,..., 60d for storing different information for each mobile communication terminal 10.

FIG. 2 is a structural diagram illustrating an example of an information field stored in a paging DB according to FIG. 1.

The first field 60a is a field in which identification information for identifying the mobile communication terminal 10 is stored.

In one embodiment, the identification information may be an electronic serial number (ESN) inputted in a manufacturing order at a factory when a mobile communication terminal is manufactured, or a mobile communication service. In the case of applying for the phone number assigned to the mobile communication terminal 10 by the mobile communication system.

The identification information is an IMEI (International Mobile Equipment Identity) for distinguishing each mobile communication terminal 10 in a GSM type mobile communication system operating in Europe and the like.

The second field 60b is a field in which a call designation phone number to be received in the soft power off mode, that is, a counterpart phone number which allows reception of a telephone call in the soft power off mode, is stored. Phone numbers of friends, lovers, and colleagues.

The third field 60c is a field for storing detach call information finally transmitted by the mobile communication terminal, and the final detach call information includes final location information.

The fourth field 60d is a field for storing specific region information to receive paging in the soft power off mode. The fourth field 60d may store the region designated by the input of the mobile communication terminal when the user subscribes to the paging service. It is also possible to store frequently visited areas (company, school, home, etc.) obtained by analyzing the location information periodically sent from the mobile communication terminal 10.

The service provider server 50 is a server of an operator that provides a paging service to a mobile communication terminal subscribed to a paging service in a soft power off mode, and information necessary during service provision among information inputted by the user through the mobile communication terminal at the time of service subscription. To be provided to the paging server 40 to be stored in the paging DB (42).

The operator operating the mobile communication network may directly provide the paging service, and the service subscriber pays the cost of using the additional service.

3 is a flowchart of a paging method according to an embodiment of the present invention.

First, each component provided in the paging system is connected to prepare to provide a paging service in a soft power off mode, that is, perform a service subscription and soft power down mode setting step (S302).

4 is a detailed flowchart of the service subscription and soft power down mode setting step (S302) shown in FIG.

First, a user subscribes to a paging service by inputting information necessary for subscription while accessing the service provider server 50 through the base station and the mobile switching center 30 using the mobile communication terminal 10 (S402).

The service provider server 50 analyzes the inputted information and signals and transmits the necessary information during the actual paging service to the paging server 40,

The paging server 40 stores unique identification information (electronic serial number, telephone number or IMEI, etc.) for identifying the mobile communication terminal 10 in the first field 60a (S404),

In the soft power off mode, the telephone number allowing the reception is stored in the second field 60b (S406),

In the soft power-off mode, specific region information for receiving paging is stored in the fourth field 60d (S408).

In this case, the specific area information may be stored and received by receiving a specific area input through the mobile communication terminal 10 in the service subscription step (S402), or frequently visited by analyzing the location information registered in the mobile switching center 30. You can also save the area provided.

In the state where the basic information necessary for providing the paging service is stored by performing the above-described series of steps and the paging service is stored, the operation mode of the mobile communication terminal 10 is set to the soft power off mode (S410). In step 10), the detach request signal is transmitted to the base station (for example, 20a) together with the soft power down mode indication signal indicating that the soft power down mode is present (S412).

Upon receiving the detach request signal, the base station 20a recognizes the soft power off mode indication signal and recognizes that the mobile communication terminal 10 that has transmitted the detach request signal is in the soft power off mode, and receives the final detach call information. The paging server 40 provides the paging server 40 with the last detach call information in the third field 60c (S414).

In the state in which the service subscription and soft power down modes are set by performing the above-described steps of FIG. 4, the mobile switching center 30 receives a signal for requesting a call connection from any originating terminal (S304). In operation S306, the identification information corresponding to the mobile communication terminal (called mobile communication terminal) of the telephone number for which call connection is requested is linked to the first field 60a.

If the corresponding identification information exists in the first field 60a, it interoperates with the paging server 40 and searches whether the telephone number of the calling terminal is a reception allowable telephone number in the second field 60b (S308).

When the telephone number of the calling terminal is a reception allowable telephone number, the power-off paging instruction signal is transmitted to the base station of the region stored in the third field 60c and the fourth field 60d again in association with the paging server 40. (S310), the base station can transmit the attach request signal to the terminating mobile communication terminal (10).

The base station of the region stored in the third field 60c is the last detached base station 20a, and the base station of the region stored in the fourth field 60c is three base stations of the specific region to receive paging.

Therefore, the attach request signal is transmitted to a total of four base stations, so there is little load on the entire paging system.

Upon receiving the power-off paging instruction signal, the base station immediately transmits an attach request signal to the called mobile communication terminal 10 (S312).

The mobile communication terminal 10 receiving the attach request signal switches to the active mode in the soft power off mode (S314).

That is, after the mobile communication terminal 10 accepts the attach request signal using the wake-up function, the mobile communication terminal 10 returns to the call reception possible state (S314) and makes a phone call with the calling terminal (S316).

In step S306, if the identification information is not present in the first field 60a, whether the identification information does not exist or the phone number of the calling terminal is a reception permission telephone number. If it is not the phone number, as in the conventional power-off mode, it transmits a message to the calling terminal informing that the operating power of the terminating mobile communication terminal is blocked (S320).

As such, a condition that enables paging in quasi-power off mode is stored in the paging server, and the call is connected only when the conditions are met. It is convenient because you do not have to make a telephone call to.

Embodiments of the present invention are disclosed in the drawings and the detailed description, and the specific terms used above are used only for the purpose of describing the present invention, and are used to limit the scope of the present invention as defined in the meaning or claims. It is not.

Therefore, those skilled in the art can be various modifications and other equivalent embodiments from this, and the true technical protection scope of the present invention should be determined by the technical spirit of the claims.

As described above, according to the present invention, there is no power consumption due to the operation of the mobile communication terminal because other functions such as LCD do not operate at all before clicking any key provided in the mobile communication terminal in the soft power off mode. Therefore, since the call is connected only when a certain condition is met, there is no power consumption due to the transmission and reception of unnecessary signals with the base station, thereby significantly reducing battery consumption.

In addition, the mobile switching center sends a paging for a call connection to the mobile terminal only when a call is received from the terminal corresponding to the telephone number that the user wants to call. You don't have to make calls, which is convenient and reduces the stress caused by making phone calls to spam calls.

Claims (24)

Set a soft power off mode to operate only the reception function of the attach request signal when the power is on, register a paging reception condition in the soft power off mode, and receive a telephone call when the attach request signal is received. A mobile communication terminal; A base station for transmitting and receiving a communication signal by wirelessly connecting the mobile communication terminal; A mobile switching station that is connected to the base station and receives a call connection request signal from an external terminal, determines a paging reception condition for the call and transmits a power-off paging indication signal to the base station if the reception condition is met. ; And And a paging server connected to the base station and the mobile switching center to store paging reception conditions and to provide the reception conditions to the mobile switching center. The method of claim 1, After setting the soft power down mode, the mobile communication terminal transmits a detach request signal along with the soft power down mode indication signal to the base station, and the base station recognizes the detach request signal as the final detach call information. Paging system of a mobile communication terminal, characterized in that for transmitting to. The method of claim 2, And the base station is a base station receiving a detach request signal and a base station to receive paging in a soft power off mode. The method of claim 3, wherein The base station to receive the paging in the soft power off mode is a base station of a specific area designated by the input of the mobile communication terminal, or a base station of a mobile communication terminal, characterized in that the user visits frequently. The method of claim 1, The paging receiving condition is a paging system of a mobile communication terminal, characterized in that the phone number of the other party that allows the reception of the telephone call in the soft power off mode. The method of claim 1, The paging server, the paging system of the mobile communication terminal, characterized in that for storing the information needed during the paging in the paging DB in the soft power off mode, including the paging receiving conditions. The method of claim 6, The paging DB of the mobile communication terminal, characterized in that each mobile communication terminal is provided with a storage area consisting of a plurality of fields for storing different information. The method of claim 7, wherein The storage area may include a first field in which identification information for identifying the mobile communication terminal is stored; A second field in which a counterpart's telephone number which allows reception of a telephone call in the soft power off mode corresponding to the reception condition is stored; A third field for storing detach call information finally transmitted by the mobile communication terminal; And a fourth field for storing specific area information to receive paging in the soft power off mode. The method of claim 8, The identification information of the first field may be any one of an electronic serial number (ESN) according to the manufacturing order of the mobile communication terminal, a phone number assigned to the mobile communication terminal, and an IMEI for distinguishing the mobile communication terminal. Paging system. The method according to claim 8 or 9, The specific area information of the fourth field is the area information designated by the user using the mobile communication terminal or the area information frequently visited by the user. The method of claim 10, The area information frequently visited by the user is a paging system of a mobile communication terminal, characterized in that the area information obtained by analyzing the location information periodically sent from the mobile communication terminal. The method of claim 1, When the mobile communication terminal receives the attach request signal, the mobile communication terminal uses the wakeup function to accept the attach request signal and then returns to a call reception state and makes a phone call. Paging system. The method of claim 1, A server of a service provider for providing a paging service in the soft power off mode is provided, and a user enters a paging service by inputting information while accessing a service provider server through a mobile communication terminal, and the service provider server provides a paging service. The paging system of the mobile communication terminal, characterized in that to provide a paging service only for the mobile communication terminal subscribed to. The method of claim 13, The service provider server, the paging system of the mobile communication terminal, characterized in that for providing the necessary information during the service of the paging server of the information input through the mobile terminal when the service subscription. When the mobile switching center receives a signal for requesting a call connection from an originating terminal, searching for a paging reception condition corresponding to a terminating mobile terminal set in soft power off mode with the originating terminal in association with a paging server; If the paging reception condition is met, the power supply paging instruction signal is transmitted to a base station of a region stored as a paging reception specific region in association with a paging server, and the base station receiving the power off paging instruction signal is received from the base station. Transmitting an attach request signal; And And switching the operation mode from the soft power off mode to the active mode in the incoming mobile communication terminal receiving the attach request signal to make a phone call with the calling terminal. The method of claim 15, If the paging reception conditions do not correspond, the mobile switching terminal further comprising the step of transmitting a message to the calling terminal informing that the operating power of the called mobile communication terminal is blocked; Paging method. The method of claim 15, The step of searching whether the paging reception condition corresponds to the step of searching whether the corresponding identification information for identifying the destination mobile communication terminal exists in a paging DB stored and managed by a paging server; And if the corresponding identification information exists, searching whether the telephone number of the calling terminal is an allowable telephone number stored in a paging DB. The method of claim 17, If the corresponding identification information does not exist in the paging DB or the telephone number of the calling terminal is not an acceptable telephone number, the mobile switching center sends a message indicating that the operating power of the called mobile terminal is cut off. And a step of transmitting to the terminal. The method of claim 15, And a service subscribing step and a soft power down mode setting step of preparing to provide a paging service in a soft power down mode before performing the series of steps. The method of claim 19, The service joining step may include: inputting information required for subscribing to a paging service while accessing a service provider server through a mobile communication terminal; The paging of the mobile communication terminal characterized in that the service provider server analyzes the input information and the signal to transmit the information required during the actual paging service to the paging server, the paging server stores the transmitted information in the paging DB Way. The method of claim 20, The storing of the information in the paging DB may include storing unique identification information for identifying a mobile communication terminal; Storing a phone number allowing paging reception in the soft power down mode; And storing specific area information to receive paging in the soft power off mode. The method of claim 19, The soft power down mode setting step may include setting an operation mode to a soft power down mode in a mobile communication terminal; Transmitting, by the mobile communication terminal, a detach request signal along with a soft power down mode indication signal to a base station; The base station receiving the detach request signal recognizes the soft power down mode indication signal and recognizes that the mobile communication terminal transmitting the detach request signal is in the soft power down mode, and provides final paging call information to the paging server. Steps, And paging the paging server to store the final detach call information. The method of claim 15, Wherein the paging receiving base station is one base station that has received the final detach signal from the mobile communication terminal, and three base stations of a specific region designated to receive paging. The method of claim 15, And the mobile communication terminal returns to a call reception state after accepting the attach request signal by using a wake-up function.

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