KR20050026678A - Mobile communication terminal having a function of providing status of callee's terminal, and system for providing status of callee's terminal and method of the same - Google Patents

Abstract

A mobile terminal having a function to provide the state information of a receiver terminal, a system for providing the state information of a receiver terminal, and a method thereof are provided to avoid an unnecessarily repeated call connection attempt as a caller can catch the state of a receiver terminal corresponding to a phone number stored in his mobile terminal. A network containing a system for providing the state information of a receiver terminal consists of a caller terminal(110), a receiver terminal(120), an MSC(130), an SMS server(140), an HLR(150), and a state information provisioning server(160). The MSC(130) executes an information relay function between the caller terminal(110) and the state information provisioning server(160). If a state information request signal is received from the caller terminal(110), the MSC(130) transfers it to the state information provisioning server(160). If the state information of the receiver terminal(120) is received from the state information provisioning server(160), the MSC(130) transfers it to the caller terminal(110). The state information provisioning server(160) comprehends and stores the state information of subscriber terminals. In response to the state information request signal received from the caller terminal(110), the state information provisioning server(160) provides the state information of the receiver terminal(120) to the caller terminal(110), based on the phone number contained in the state information request signal.

Description

A mobile communication terminal having a function of providing status of callee's terminal, and system for providing status of callee's terminal and method of the same}

The present invention relates to a mobile communication terminal having a function of providing status information of a receiver terminal, and a system and method for providing status information of a receiver terminal, and more particularly, to state information of a receiver terminal to which a caller wishes to connect a call. It relates to a mobile communication terminal, and a system and method for providing status information of a receiver terminal.

Currently, the mobile communication terminal provides various additional functions including an electronic organizer function to increase the convenience of subscribers. Among the additional functions of the mobile communication terminal, a widely used function is a phone book function. Using the phone book function provided by the mobile terminal, the caller can easily retrieve the phone number stored in the storage medium of the mobile terminal and make a call to the desired recipient without having to remember the recipient's phone number. have. In addition, it is possible to check the outgoing call number and the incoming call number of the designated number of times.

Mobile phones have become a common aid in personal life, both at home and abroad, and calls between individuals or between individuals and groups continue to increase. For this reason, the number of telephone numbers managed by an individual is generally dozens or more, and call attempts are made to various parties. However, at present, the caller cannot determine whether the receiver terminal is powered off or busy. Therefore, the caller can grasp the state of the receiver terminal only after the caller attempts to make a call by directly selecting the receiver's telephone number, and furthermore, the caller has to repeatedly attempt to call until the call is connected.

An object of the present invention is to provide a mobile communication terminal that provides a state of a terminal corresponding to a telephone number selected by a caller without dialing by selecting a stored telephone number.

Another technical problem to be achieved by the present invention is a system for providing status information of a receiver terminal capable of checking a state of a terminal corresponding to a telephone number selected by a caller without the caller selecting and dialing a telephone number stored in the mobile communication terminal; To provide a way.

SUMMARY OF THE INVENTION The present invention provides a method for providing status information of a receiver terminal that allows a caller to check a state of a terminal corresponding to a telephone number selected by a caller without having to dial by selecting a phone number stored in the mobile communication terminal. The present invention provides a computer-readable recording medium that records a program to be executed by the PC.

In order to achieve the above technical problem, the mobile communication terminal with a state information providing function of the receiver terminal according to the present invention, a storage unit for storing at least one or more telephone numbers; A user interface unit for receiving the telephone number and status information subscription service from a user and outputting status information of a receiver terminal to the user; Access the status information providing server holding the status information of the mobile communication terminal and receive the status information of the receiver terminal corresponding to the telephone number selected by the user among the telephone numbers stored in the storage unit, and the status information of the receiver terminal. A state information processing unit for outputting through the user interface unit; And a message processing unit for setting the receiver terminal as a destination and generating a short message in which a predetermined call request message is written to the receiver terminal when the state information of the receiver terminal is not available for call connection.

In order to achieve the above technical problem, a system for providing status information of a receiver terminal according to the present invention includes a phone number stored in the mobile communication terminal received from a mobile communication terminal of a user who wants to subscribe to a status information providing service. A member management unit generating subscriber information in association with identification information uniquely assigned to the user; A state information management unit which receives state information of a mobile communication terminal corresponding to a telephone number included in the subscriber information from a home location register connected through a communication network and generates state information data in association with each of the telephone numbers; A storage unit for storing the subscriber information and the state information; And receiving a request for providing status information of a receiver terminal corresponding to a telephone number to which the user wants to make a call from among the telephone numbers stored in the mobile communication terminal from the mobile communication terminal of the user who subscribed to the status information providing service, And a state information providing unit for reading the state information of the receiver terminal from the storage unit and transmitting the state information of the receiver terminal to the mobile communication terminal of the user.

As a result, the caller can grasp the state of the receiver terminal corresponding to the telephone number stored in his mobile communication terminal (i.e., available state, busy state, power off state, etc.), so that the state of the receiver terminal is called. Only when it is determined to be possible, the inconvenience of attempting to connect the call repeatedly can be eliminated by attempting the call.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the system and method for providing status information of the receiver terminal according to the present invention.

1 is a diagram showing the configuration of a network including a system for providing status information of a receiver terminal according to the present invention.

1, a network including a system for providing status information of a receiver terminal according to the present invention includes a caller terminal 110, a receiver terminal 120, an exchange station 130, an SMS server 140, and a location registration device (Home). Location Register (HLR) 150, and status information providing server 160.

Basically, the call in the mobile communication network is made around the HLR 150 that manages the roaming information of the subscriber. When the mobile communication terminal attempts to roam to the mobile communication network by turning on a power from a specific base station (not shown), the exchange station 130 determines whether the mobile communication terminal that has attempted roaming through the MAP exchange with the HLR 150, In case of a normal terminal, the terminal state is checked as idle to indicate that call connection is possible. The HLR 150 may recognize a time point at which a service is started because a registered information including a supplementary service is recorded. The state information providing server 160 grasps and manages information on a state change of a terminal generated when registering a mobile communication terminal or performing a call connection.

Calling terminal 110 is a terminal having a wireless communication function, such as a mobile phone, PDA. 2 shows a detailed configuration of a preferred embodiment for the calling terminal. Referring to FIG. 2, the caller terminal 110 includes a storage 210, a user interface 220, a state information processor 230, a communicator 240, a message processor 250, and a controller 260. do. On the other hand, since the configuration and function of the receiver terminal 120 is substantially the same as the configuration and function of the sender terminal 110 shown in Figure 2, a detailed description of the receiver terminal 120 will be omitted.

The storage unit 210 stores at least one phone number. The telephone number stored in the storage unit 210 may be input from the user through the user interface unit 220 or from an external device through a 24-pin input / output terminal.

The user interface 220 includes a plurality of buttons for receiving data from a user and a display panel for outputting data to the user. The user performs operations such as registration of a phone number through the user interface 220, search for a phone number to be connected to the phone, a call connection request, and the like, and confirms data output through the user interface 220. In addition, the user may subscribe to the status information providing service through the user interface 220.

The state information processor 230 searches for a phone number stored in the storage unit 210 and then selects a specific phone number or attempts to connect to a specific phone number, and provides the state information through the communication unit 250. The server 260 accesses the server 260 and requests the state information of the receiver terminal 120 corresponding to the telephone number selected by the user. As described above, the request for the status information by the status information processing unit 230 may be performed when the user selects a connection target phone number or attempts to make a call connection to the connection target phone number. It may be performed when checking the status information of 120). On the other hand, the state information processing unit 230 outputs the state information of the receiver terminal 120 received from the state information providing server 260 through the user interface 220.

The state information output operation may be configured to be performed only when the state information of the receiver terminal 120 is not available for the call connection (that is, power off or during a call). At this time, the state information processing unit 230 outputs a message generation command corresponding to the state information of the receiver terminal 120 to the message processing unit 250 according to the setting state. That is, when the state of the receiver terminal 120 is set to transmit a short message to the receiver terminal 120 when the power off state or the call state where the call connection is impossible, the state information processor 230 receives the receiver terminal 120. Outputs a message generation command corresponding to the status information of the message to the message processing unit 250. The message generation command includes different information according to the state of the receiver terminal 120. Furthermore, the state information processing unit 230 checks the state information of the receiver terminal 120 continuously received from the state information providing server 160 (S470), when the state of the receiver terminal 120 is switched to the standby state, The user interface unit 220 outputs a message indicating that the call connection to the receiver terminal 120 is possible.

The communication unit 240 provides a signal transmission and reception means between the receiver terminal 120 and the base station 130. The receiver terminal 120 transmits a call connection request signal, a short message, a status information request signal, etc. to the base station 130 through the communication unit 240, and receives the state information of the receiver terminal 120 from the base station 130. .

The message processing unit 250 generates a short message corresponding to the message generation command received from the state information management unit 230 and transmits the short message to the receiver terminal 120. Message processing unit 250 is the phone number of the caller terminal 110 and the receiver terminal 120 is designated as the caller and the receiver, respectively, "Leave a message is not connected to the phone. Please call ○○○." Create an included message. At this time, the name of the caller ○○○ is grasped from the user information stored in the caller terminal (110). The above-described message content is preferably prepared in advance and stored in the message processing unit 250 or a separate storage medium. The message generation and transmission operation of the message processing unit 250 is performed when a message generation command is input from the state information processing unit 230 or the control unit 260. If the message generation command is set to be input from the control unit 260, the state information processing unit 230 according to the state information output command received from the control unit 260, instead of the message generation command to the message processing unit 250, the receiver terminal ( 120 outputs the status information.

The controller 260 controls the operation of the components constituting the caller terminal 110. In particular, the controller 260 performs a screen providing operation for subscribing the status information providing service to the user interface 220 and transmitting the user's selection of subscription information of the status information providing service selected by the user to the status information providing server 160. . The status information providing service subscription request information transmitted to the status information providing server 160 includes a terminal phone number of the user and a phone number stored in the user terminal. The status information providing service subscription request information is transmitted to the status information providing server 160 through a wireless data network or to the status information providing server 160 by a short message. In addition, the controller 260 controls the operation of the state information requesting unit 230 according to the state information request operation of the receiver terminal 120 of the state information processing unit 230 and the state of the received receiver terminal 120. Further, the controller 260 controls the message generation and transmission operation of the message processing unit 250.

Switching station 130 is a call connection between the calling terminal 110 and the called terminal 120, the short message transmitted from the calling terminal 110 to the SMS server 140, the location of the terminals registered in the HLR 150 Based on the information, it performs functions such as location management of terminals existing in the area managed by the user, information relaying between the caller terminal 110 and the status information providing server 160. The configuration and function of the switching center 130 is easily understood by those of ordinary skill in the art, so detailed description thereof will be omitted. However, in connection with relaying information between the calling terminal 110 and the status information providing server 160, the exchange 130 transmits the status information request signal received from the calling terminal 110 to the status information providing server 160, It performs the function of delivering the status information of the receiver terminal 120 received from the status information providing server 160 to the calling terminal 110 requesting the provision of the status information.

The status information providing server 160 grasps and stores the status information of the terminals registered as members, and then, in response to the status information request signal received from the caller terminal 110, the receiver terminal 120 included in the status information request signal. Provides the status information of the caller terminal (110). 3 shows a configuration of a preferred embodiment of the status information providing server 160. Referring to FIG. 3, the status information providing server 160 may include a member manager 310, a status status information manager 320, a storage 330, a status information provider 340, an operator 350, and a communication unit ( 360).

Member management unit 310 is the phone number stored in the user terminal included in the status information providing service subscription request information received from the mobile communication terminal terminal phone number or user of the user included in the status information providing service subscription request information It is stored in the storage unit 330 in association with the unique identification information corresponding to the terminal phone number of the. On the other hand, when the status information providing server 160 is configured to perform a direct registration process, the user accesses the status information providing server 160 using his mobile terminal, a personal computer having a communication function, and the like. Fill out the personal information including your name and phone number of your mobile communication terminal on the membership application form printed on your device and apply for service.

If there is a service subscription request from the user, the member management unit 310 of the status information providing server 160 transmits a message to transmit the phone number stored in the mobile communication terminal received from the user. The user terminal receiving the message transmits the stored phone numbers to the status information providing server 160, and the member manager 310 associates the received phone numbers with the user's mobile communication terminal phone number or unique identification information. To store in the storage unit 330. When the status information providing server 160 is configured to perform a direct membership process, the mobile terminal transmits the stored phone number in response to the message received from the status information providing server 160. 260 is performed. The member manager 310 checks whether the phone number stored in the mobile communication terminal and the received phone number match with the received phone number and corrects the information through a data service connection if there is a mismatch of information. Checking whether the information is consistent may be performed by the mobile communication terminal.

The state information management unit 320 receives state information of the mobile communication terminals corresponding to the phone numbers stored in the storage unit 330 from the HLR 150 and stores the state information in association with each phone number. At this time, the state information management unit 320 periodically inquires the HLR 150 of the state information of the mobile communication terminals corresponding to the phone numbers stored in the storage unit 330, or the state information request signal from the mobile communication terminal. Upon receipt of the call, the HLR 150 queries the state information of the mobile communication terminals corresponding to the phone numbers stored in the storage unit 330 in real time. The state information acquisition method as described above may be appropriately mixed in consideration of network operation load.

Furthermore, when the phone number stored in the storage unit 330 is transmitted to the HLR 150 and a change occurs in the state of the mobile communication terminal corresponding to the phone number, the HLR 150 actively manages the state information management unit 320. It can be configured to provide a phone number and the change state of the mobile communication terminal in which the change of state occurs. In this case, the HLR 150 registers the information stored in the storage unit 330 to the storage medium provided therein in association with the member manager 310. On the other hand, when the HLR 150 does not manage the busy state (Busy) in the voice call processing procedure of the mobile communication, the state information providing server 160, the receiver terminal 120 in consideration of the average average call time, etc. Check the status of) and update the status information.

The storage unit 330 stores the phone number stored in the mobile communication terminal of the user linked to the mobile communication terminal phone number of the user who has registered as a member and the state information of the mobile communication terminal corresponding to the phone number.

The state information providing unit 340 searches for the storage unit 330 based on the phone number of the receiver terminal 120 included in the state information request signal in response to the state information request signal received from the caller terminal 110. The status information of the read receiver terminal 120 is provided to the caller terminal 110. The state information of the receiver terminal 120 may be provided in the form of a short message or may be directly output to the user interface 220 of the caller terminal 110.

The operator 350 controls the operation of the components constituting the status information providing server 160. In particular, the operation unit 350 controls the member registration processing operation of the member management unit 310, the storage operation of the information received from the mobile communication terminal of the user subscribed to the member, and the interlocking operation with the HLR 150. In addition, the operation unit 350 controls the operation of the status information providing unit 340 that reads and transmits the status information of the receiver terminal 120 in response to the status information request signal received from the calling terminal 110. In addition, the operation unit 350 performs direct interworking between servers or interworking through a gateway for interworking with other networks. Such interworking with other networks may be achieved in a manner similar to interworking between telecommunication operators in the existing short message service.

The communication unit 360 provides a signal transmission / reception means with the caller terminal 110, the user's personal computer, the SMS server 140, the HLR 150, and a server existing in another network. The state information providing server 160 receives the state information request signal from the caller terminal 110 through the communication unit 360, and transmits the state information of the receiver terminal 120 to the caller terminal 110.

4 is a flowchart illustrating an embodiment of a method for providing status information of the receiver terminal 120 in the calling terminal 110 according to the present invention.

Referring to FIG. 4, when the caller terminal 110 receives a subscription of the status information providing service from the caller through the user interface 220, the phone number stored in the caller terminal 110 and the storage 210 is stored. The service subscription request signal including the number is transmitted to the status information providing server 160 (S400). When the caller selects a phone number to try to make a call from among the phone numbers stored in the storage unit 210 or attempts to make a call to the selected phone number, the state information processing unit 230 provides the state information providing server 160. Request the provision of the status information of the receiver terminal 120 to (S410). The state information processing unit 230 checks the received state information (S420). If the status information of the receiver terminal 120 received from the status information providing server 160 is in a standby state, a normal call connection process is performed (S430). On the contrary, if the received state information of the receiver terminal 120 is in a power off state or a busy state, the state information processing unit 230 outputs a message generation command to the message processing unit 250 while the user interface unit 220 The receiver 120 outputs the state information of the receiver 120 (S440).

The message processing unit 250 responds to the message generation command received from the state information processing unit 230, and the telephone numbers of the calling party terminal 110 and the recipient terminal 120 are designated as the calling party and the recipient, respectively, and the message is not connected. Leave. Please call ○○○. "Create a message containing the content (S450). In addition, the message processing unit 250 transmits the generated message to the receiver terminal 120 through the SMS server 140 (S460). On the other hand, the state information processing unit 230 checks the state information of the receiver terminal 120 continuously received from the state information providing server 160 (S470), when the state of the receiver terminal 120 is switched to the standby state, The user interface unit 220 outputs a message indicating that the call connection to the receiver terminal 120 is possible (S480).

5 is a flowchart illustrating an embodiment of a method for providing status information of the receiver terminal 120 in the status information providing server 160 according to the present invention.

Referring to FIG. 5, the state information providing server 160 may include personal information and a caller terminal 110 including a name from a caller terminal 110 of a caller who wants to subscribe to a status information service or a personal computer having a communication function. Receive the phone number of the mobile communication terminal stored in the (S500). Next, the member information management unit 310 stores the received phone numbers in the storage unit 330 in association with the user's mobile communication terminal phone number or unique identification information (S510). In addition, the state information management unit 320 receives the state information of the mobile communication terminals corresponding to the phone numbers stored in the storage unit 330 from the HLR 150 and stores in association with each phone number (S520) . The state information providing unit 340 searches for the storage unit 330 based on the phone number of the receiver terminal 120 included in the state information request signal in response to the state information request signal received from the caller terminal 110. The state information of the read receiver terminal 120 is provided to the caller terminal 110 (S530).

FIG. 6A is a diagram illustrating an embodiment of a method of providing an HLR 150 with status information providing server 160 by the HLR 150 when the receiver terminal 120 is activated.

Referring to FIG. 6A, when power is supplied, the receiver terminal 120 is activated by being allocated a communication channel through communication with the switching center 130 (S600). The exchange station 130 transmits the base station information for the area where the activated receiver terminal 120 is located and the position information of the receiver terminal 120 to the HLR 150 (S605). The HLR 150 reports the state information (ie, standby state) according to the activation of the receiver terminal 120 to the state information providing server 160 (S610). The state information providing server 160 stores the received state information of the receiver terminal 120 and transmits a response signal indicating that the state information has been received by the HLR 150 (S615).

FIG. 6B is a diagram illustrating an embodiment of a method of obtaining status information of the receiver terminal 120 from the HLR 150 by the state information providing server 160 when the receiver terminal 120 is activated.

Referring to FIG. 6B, when power is supplied, the receiver terminal 120 is activated by receiving a communication channel through communication with the switching center 130 (S630). The exchange station 130 transmits the base station information for the area where the activated receiver terminal 120 is located and the position information of the receiver terminal 120 to the HLR 150 (S635). The state information providing server 160 requests the state information of the receiver terminal 120 from the caller terminal 110 to the HLR 150 upon receiving the status information request signal of the receiver terminal 120 from the caller terminal 110 (S640). . The HLR 150 provides the state information of the receiver terminal 120 to the state information providing server 160 in response to the state information request received from the state information providing server 160 (S645).

FIG. 6C illustrates a method for providing the state information of the receiver terminal 120 to the state information providing server existing in another network through the state information providing server 160 when the receiver terminal 120 is activated. A diagram illustrating the implementation of the embodiment.

Referring to FIG. 6C, when power is supplied, the receiver terminal 120 is activated by receiving a communication channel through communication with the switching center 130 (S660). The exchange station 130 transmits the base station information for the area where the activated receiver terminal 120 is located and the position information of the receiver terminal 120 to the HLR 150 (S665). The HLR 150 reports state information (ie, standby state) according to activation of the receiver terminal 120 to the state information providing server 160 (S670). The state information providing server 160 transmits the received state information of the receiver terminal 120 to the state information providing server existing in the other network (S675). The state information providing server existing in the other network transmits a response signal indicating that the state information of the receiver terminal 120 has been received to the state information providing server 160 (S680).

FIG. 7 is a diagram illustrating an embodiment of a method of determining, by the state information providing server 160, state information of the receiver terminal 120 when the state of the receiver terminal 120 is in a call state.

Referring to FIG. 7, when the receiver terminal 120 is busy, the switching center 130 notifies the HLR 150 that the state of the receiver terminal 120 is busy (S700). The HLR 150 notifies the state information providing server 160 that the state of the receiver terminal 120 is busy (S710). The state information providing server 160 stores the received state information of the receiver terminal 120 and transmits a response signal indicating that the state information has been received by the HLR 150 (S720). If the receiver terminates the call, the switching center 130 informs the HLR 150 that the receiver terminal 120 is in the standby state (S730). The HLR 150 notifies the state information providing server 160 that the state of the receiver terminal 120 is in a standby state (S740). The state information providing server 160 stores the received state information of the receiver terminal 120 and transmits a response signal indicating that the state information has been received by the HLR 150 (S750).

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific preferred embodiments described above, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such changes are within the scope of the claims.

 According to the present invention, there is provided a system and method for providing status information of a receiver terminal, and a mobile communication terminal having a function of providing status information of a receiver terminal, wherein the caller corresponds to a receiver corresponding to a telephone number stored in his / her mobile communication terminal. Since the state of the terminal (ie, available state, busy state, power off state, etc.) can be grasped, the inconvenience of attempting to make a call repeatedly by attempting a call only when the state of the receiver terminal is determined to be available. Can be eliminated.

1 is a diagram showing the configuration of a network including a system for providing status information of a receiver terminal according to the present invention;

2 is a block diagram showing the detailed configuration of a preferred embodiment for a mobile communication terminal according to the present invention;

3 is a block diagram showing the configuration of a preferred embodiment of a status information providing server according to the present invention;

4 is a flow chart showing an embodiment of a method for providing status information of a receiver terminal 120 in the calling terminal 110 according to the present invention;

5 is a flowchart illustrating an embodiment of a method for providing status information of the receiver terminal 120 in the status information providing server 160 according to the present invention;

FIG. 6A illustrates a process of an embodiment of a method in which the HLR 150 provides status information of the receiver terminal 120 to the status information providing server 160 when the receiver terminal 120 is activated.

FIG. 6B is a view illustrating an embodiment of a method of obtaining status information of the receiver terminal 120 from the HLR 150 by the state information providing server 160 when the receiver terminal 120 is activated.

FIG. 6C illustrates a method for providing the state information of the receiver terminal 120 to the state information providing server existing in another network through the state information providing server 160 when the receiver terminal 120 is activated. A diagram illustrating the implementation of the embodiment, and

FIG. 7 is a diagram illustrating an embodiment of a method of determining, by the state information providing server 160, state information of the receiver terminal 120 when the state of the receiver terminal 120 is in a call state.

Claims (2)

A storage unit for storing at least one telephone number; A user interface unit for receiving the telephone number and status information subscription service from a user and outputting status information of a receiver terminal to the user; Access the status information providing server holding the status information of the mobile communication terminal and receive the status information of the receiver terminal corresponding to the telephone number selected by the user among the telephone numbers stored in the storage unit, and the status information of the receiver terminal. A state information processing unit for outputting through the user interface unit; And A message processing unit for setting the receiver terminal as a destination and generating a short message including a predetermined call request message and transmitting it to the receiver terminal when the state information of the receiver terminal is not available for call connection. Communication terminal. A member management unit generating subscriber information by linking a phone number stored in the mobile communication terminal received from the mobile communication terminal of the user who wants to subscribe to the status information providing service with identification information uniquely assigned to the user; A state information management unit which receives state information of a mobile communication terminal corresponding to a telephone number included in the subscriber information from a home location register connected through a communication network and generates state information data in association with each of the telephone numbers; A storage unit for storing the subscriber information and the state information; And When the user receives a request for providing status information of a receiver terminal corresponding to a telephone number to which the user wants to make a call from among the phone numbers stored in the mobile communication terminal, the mobile communication terminal of the user subscribed to the status information providing service, And a status information providing unit for reading the status information of the receiver terminal from a storage unit and transmitting the status information of the receiver terminal to the mobile communication terminal of the user.