KR100883805B1

KR100883805B1 - Mobile communication system for supporting recipient charge service and method thereof

Info

Publication number: KR100883805B1
Application number: KR20070091780A
Authority: KR
Inventors: 안호태
Original assignee: 주식회사 케이티프리텔
Priority date: 2007-09-10
Filing date: 2007-09-10
Publication date: 2009-02-17

Abstract

A mobile communications system and a method thereof for improving the convenience of a user and providing a free phone service to the other party are provided to improve the convenience of a user due to requesting a call through a USSD(Unstructured Supplementary Service Data) message. A transmission side mobile terminal(110) transmits a set USSD(Unstructured Supplementary Services Data) command for phoning the other party and requesting in a first HLR(120). The USSD command and a first HLR are transmitted from the service server(130). The USSD command is generated by searching service information corresponding to the USSD command. The service server transmits the generated USSD message in the second HLR(140). A database(141) stores service information corresponding to the USSD command. A second HLR transmits the USSD message and transmits the message to the mobile terminal(150).

Description

Mobile communication system for supporting toll service and method thereof

The present invention relates to a toll-free service, and more particularly, to a mobile communication system and a method for providing a toll-free service that can improve user convenience and allow a user to make a phone call in consideration of their situation. will be.

As the usage gradually increases, the user using the smart card can charge and use a predetermined fee in advance. Such a prepaid fee function also includes a mobile communication service such as voice and video calls or messages even when there is no charged prepaid fee. Since it was impossible to send and receive itself, it was difficult to find a way to contact the other person.

To this end, a toll service is used. In general, a toll service refers to an intelligent network service that assigns a special number to a telephone subscriber and charges a charge on behalf of the caller for all calls received by the number. The toll-free service assigns a service identification number such as 080 and a wide-area toll-free number to complete the call by selecting an actual telephone number that can be received according to the conditions of the calling region regardless of the region.

In particular, the toll-free service is provided with a variety of services such as a short-range priority routing function that selects a receiving number closest to the originating area and a temporary routing function that selectively connects different points by day and time.

However, a user using such a toll free service can actually make a phone call with the other party only if the other person expresses his or her expression of accepting the requested telephone call.

In addition, even if the user requests the other party to make a phone call, it may be more difficult to make a phone call if the other party is in a situation such as an important meeting or an appointment.

Accordingly, research on a mobile communication system and methods thereof for providing a toll service more efficiently in the absence of a charge charged in a smart card should continue.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and to a counterpart by using a preset Unstructured Supplementary Service Data (USSD) message when there is no prepaid fee charged in a smart card for providing a mobile communication service. The present invention provides a mobile communication system and a method for providing a toll free service for requesting a call, thereby improving user convenience.

Another object of the present invention is a mobile communication system and method for providing a toll-free service for requesting the other party to make a call using a preset USSD message so that the other party can make a call in consideration of their situation. To provide.

In order to achieve the above object, when a system according to an aspect of the present invention receives an Unstructured Supplementary Services Data (USSD) command from a transmitting mobile terminal, the system generates a USSD message including corresponding service information and moves the receiving mobile terminal to the receiving side. A service server for transmitting to the terminal and a database for storing the USSD command and the corresponding service information corresponding thereto, wherein the USSD command corresponds to numbers, letters, and symbols to correspond to the service information for constructing the USSD message. It is characterized by consisting of at least one or more of them.

In order to achieve the above object, a mobile terminal according to another aspect of the present invention provides service information included in the received USSD message when the sending mobile terminal receives an Unstructured Supplementary Services Data (USSD) message from a service server according to a request. A control unit for extracting and outputting the same and at least one output unit for notifying the outputted service information to a user, wherein the USSD command corresponds to numbers, letters, and symbols to correspond to the service information for constructing the USSD message. It is characterized by consisting of at least one or more of them.

To achieve the above object, the toll-free service method according to another aspect of the present invention, the service server receiving an Unstructured Supplementary Services Data (USSD) command from the sending mobile terminal, the service server received the USSD Retrieving service information corresponding to the command; and generating, by the service server, a USSD message including the retrieved service information and transmitting the generated USSD message to a corresponding receiving mobile terminal; The command may be performed by a combination of at least one of numbers, letters, and symbols to correspond to the service information for composing the USSD message.

To achieve the above object, the toll-free service method according to another aspect of the present invention comprises the steps of receiving an Unstructured Supplementary Services Data (USSD) message from the service server in response to a request of the sending mobile terminal, the received USSD message Extracting service information included in the; and outputting the outputted service information to at least one output unit for informing a user, wherein the USSD command corresponds to the service information for constructing the USSD message. And at least one or more combinations of numbers, letters, and symbols.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Through this, the present invention, when there is no prepaid fee charged in the smart card for receiving the mobile communication service, and requests the other party to make a call using a preset Unstructured Supplementary Service Data (USSD) message, user convenience There is an effect that can improve.

In addition, since the present invention requests the other party to make a call using a preset USSD message, there is an effect that the other party can be made in consideration of his situation.

Hereinafter, a mobile communication system and a method for providing a toll service according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5.

The present invention proposes a toll service method that can consider the situation of the other party. That is, according to the present invention, when there is no prepaid fee charged in the smart card in order to receive a mobile communication service, for example, a telephone call or the like, the present invention may request a call to the other party using a preset Unstructured Supplementary Service Data (USSD) message. have.

In this case, the USSD message may be used to transmit information or a specific command in GSM and WCDMA networks. In particular, the USSD message has a merit that the transmission speed is much faster than the SMS message because it is not a method of storing and transmitting a signal channel.

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

As shown in FIG. 1, the system according to the present invention includes a transmitting mobile terminal 110, a first home location register (HLR) 120, a service server 130, a database 131, and a second HLR 140. ), And the receiving side mobile terminal 150 may be included.

The transmitting mobile terminal 110 may transmit a preset Unstructured Supplementary Services Data (USSD) command to the first HLR 120 to request the other party to make a call.

The first HLR 120 may receive the USSD command and transmit it to the service server 130 for processing it.

The service server 130 may search for service information corresponding to the USSD command and generate a USSD message including the same. The service server 130 may transmit the generated USSD message to the second HLR 140.

At this time, the database 131 may store the USSD command and the corresponding service information to match.

The second HLR 140 may receive the USSD message and transmit it to the corresponding receiving mobile terminal 150.

When the receiving mobile terminal 150 receives the USSD message, the receiving mobile terminal 150 may extract service information included therein. The receiving mobile terminal 150 may output this to inform the user. A method of providing a toll free service as described above will be described with reference to FIG. 2.

2 is a first exemplary diagram illustrating a method for providing a toll free service according to an embodiment of the present invention.

As shown in FIG. 2, when there is no charged prepaid fee, the user may input a preset USSD command for requesting a call from the other party.

In this case, the USSD command is a command corresponding to call request information for requesting the other party to make a call, and may be performed by a combination of at least one of numbers, letters, and symbols.

For example, the USSD command may use the other party's phone number, such as * 0123456789 #.

Accordingly, the transmitting mobile terminal may transmit the input USSD command to the first HLR (S210).

The first HLR may receive a USSD instruction from the transmitting mobile terminal. The first HLR may analyze the received USSD instruction (S220). That is, if the received USSD command corresponds to the USSD service, the first HLR may transmit the USSD command to the corresponding service server (S230).

The service server may receive a USSD command from the first HLR and generate a USSD message based thereon. The principle of generating such a USSD message will be described with reference to FIG.

In this case, the service server may mean a USSD server for providing a USSD service that transmits a USSD message including service information corresponding to the preset USSD command.

3 is an exemplary diagram for illustrating a detailed configuration of the service server 140 illustrated in FIG. 1.

As shown in FIG. 3, the service server 140 according to the present invention may include a first interface 310, a searcher 320, a generator 340, a second interface 340, and the like. .

The first interface 310 can receive a USSD instruction from the first HLR. The search unit 320 may search for service information corresponding to the received USSD command in a database through the second interface 340 (S240).

At this time, the service information is a guide information for requesting the other party to call, for example, 'User 012-345-6789 has requested to call.' And the like.

The generation unit 340 may generate a USSD message including the retrieved service information (S250).

Thereafter, the service server may transmit the generated USSD message to the second HLR (S260). When the second HLR receives the USSD message, the second HLR may transmit the received USSD message to the receiving mobile terminal (S270).

The receiving mobile terminal may receive a USSD message from the second HLR. The receiving mobile terminal may extract service information included in the received USSD message (S280).

As a result, the receiving mobile terminal may output the extracted service information (S290). That is, the receiving mobile terminal may not only display the service information but also reproduce a preset output sound for notifying the service information.

Through this, the user of the receiving mobile terminal can know that the user of the transmitting mobile terminal has requested to make a call. The user of the receiving mobile terminal can make a phone call at an appropriate time according to his situation, for example, a situation in which it is difficult to make a phone call such as during an important meeting.

In addition, if there is no charged prepaid fee, if the user uses the USSD service to indiscriminately call, the USSD message may cause excessive load on the network. It demonstrates with reference.

4 is a second exemplary diagram illustrating a method for providing a toll free service according to an embodiment of the present invention.

As shown in FIG. 4, a process of transmitting a USSD command to a service server by a transmitting mobile terminal and transmitting a USSD message to a receiving mobile terminal based on the service server is the same as that of FIG. 2. Omit from.

However, when the service server receives the USSD command from the transmitting mobile terminal, the service server may perform user authentication of the transmitting mobile terminal. That is, the service server may determine whether the user of the transmitting mobile terminal is a legitimate user without a prepaid charge and determine whether to provide the USSD service according to the result of the checking.

In addition, the service server may generate a USSD message for notifying the user when the user of the transmitting mobile terminal is not a legitimate user and provide the same to the transmitting mobile terminal.

In this case, the present invention is not limited to the case in which there is no charged prepaid fee, but may determine whether the user is a predetermined legitimate user in consideration of the number of times of using the service even when there is no charged prepaid fee.

Through this, the present invention will be able to efficiently provide a toll service.

5 is an exemplary diagram for illustrating a detailed configuration of a mobile terminal shown in FIG. 1.

In this case, the mobile terminal is any electronic device capable of providing a USSD service regardless of a transmitting side or a receiving side, and may include a mobile phone, a personal digital assistant (PDA), a notebook, and the like.

As shown in FIG. 5, the mobile terminal according to the present invention includes a display unit 510, an audio output unit 520, an input unit 530, a controller 540, a memory 550, a transceiver 560, and Interface 570 and the like.

The memory 550 may store a preset USSD command corresponding to the USSD service.

When the controller 540 receives a preset USSD command through the input unit 530 to request the other party to make a call, the controller 540 may transmit the received USSD command to the service server.

When the controller 540 receives the USSD message from the service server, the controller 540 may extract service information included in the received USSD message. The controller may output the extracted service information through the output unit.

In this case, the output unit may inform the user of the extracted service information. To this end, the output unit may largely include a display unit 510 and an audio output unit 520.

The display unit 510 may display the output service information. The audio output unit 520 may also reproduce a preset output sound for notifying that the service information is displayed.

The mobile terminal may be detachably connected to the smart card through the interface 570.

At this time, the smart card is one of a Subscriber Identification Module (SIM) card, a User Identification Module (UIM) card, a Removal User Identification Module (RUIM) card, and a Universal Subscriber Identification Module (USIM) card that can be mounted on or detachably attached to a mobile terminal. It can mean either.

The mobile communication system and its method for providing a toll service according to the present invention can be modified and applied in various forms within the scope of the technical idea of the present invention and are not limited to the above embodiments. In addition, the embodiments and drawings are merely for the purpose of describing the contents of the invention in detail, not intended to limit the scope of the technical idea of the invention, the present invention described above is common knowledge in the technical field to which the present invention belongs As those skilled in the art can have various substitutions, modifications, and changes without departing from the technical spirit of the present invention, it is not limited to the above embodiments and the accompanying drawings, of course, and not only the claims to be described below but also claims Judgment should be made including scope and equivalence.

2 is an exemplary view showing a method for providing a toll free service according to an embodiment of the present invention.

3 is an exemplary diagram for illustrating a detailed configuration of a service server shown in FIG. 1.

110: transmitting terminal

120: first exchanger

130: first HLR

140: service server

141: database

150: second HLR

160: second exchanger

170: receiving side mobile terminal

310: first interface

320: search unit

330: generation unit

340: second interface

510: display unit

520: audio output unit

530: input unit

540: control unit

550: memory

560: transceiver

570: interface

Claims

Receiving a USSD (Unstructured Supplementary Services Data) command from the transmitting mobile terminal, the service server generating a USSD message including corresponding service information and transmitting the same to the receiving mobile terminal; And

A database for storing the USSD command and the corresponding service information in a matched manner;

Wherein the USSD instruction is made by at least one combination of numbers, letters, and symbols to correspond to the service information for composing the USSD message.

According to claim 1,

The service server,

An interface for receiving the USSD instruction from the transmitting mobile terminal;

A searcher for searching the service information corresponding to the received USSD command from the database; And

And a generation unit for generating the USSD message including the retrieved service information and transmitting the generated USSD message to the receiving mobile terminal.

According to claim 1,

The service server,

And a USSD server for providing a USSD service for transmitting the USSD message including the service information corresponding to the preset USSD command.

According to claim 1,

The service information,

And a guide information for requesting the user of the receiving mobile terminal to make a call to the user of the receiving mobile terminal.

According to claim 1,

When the USSD command is received from the transmitting mobile terminal, the received USSD command is transmitted to the service server.

And a home location register (HLR) for transmitting the received USSD message to the receiving mobile terminal when receiving the USSD message from the service server.

A control unit for extracting and outputting service information included in the received USSD message when a USSD (Unstructured Supplementary Services Data) message is received from a service server according to a request of a transmitting mobile terminal; And

At least one output unit for informing the user of the outputted service information

The method of claim 6,

The control unit,

And receiving a preset USSD command for requesting the other party to make a call, and transmitting the USSD command to the service server.

The method of claim 6,

The output unit,

A display unit for displaying the service information to inform the user; And

And an audio output unit for displaying the service information and reproducing a preset output sound for informing the user of the service information.

The method of claim 6,

It provides a prepaid fee function that allows the user to receive a mobile communication service for a time corresponding to the charged rate by charging a predetermined fee in advance, and further comprises a smart card that can be detachably connected to the mobile terminal. Mobile terminal.

The method of claim 6,

The mobile terminal,

Any electronic device capable of providing a USSD service, wherein the mobile terminal is any one of a mobile phone, a personal digital assistant (PDA), and a notebook computer.

Receiving, by the service server, an Unstructured Supplementary Services Data (USSD) command from the sending mobile terminal;

Retrieving service information corresponding to the USSD command received by the service server; And

Generating, by the service server, a USSD message including the retrieved service information and transmitting the generated USSD message to a corresponding receiving mobile terminal;

The method of claim 11, wherein

Receiving the USSD command,

Receiving, by a first HLR, the USSD command from the transmitting mobile terminal;

Confirming the USSD instruction by the first HLR; And

And sending, by the first HLR, the USSD command to the service server for processing the same according to the verification result.

The method of claim 12,

Transmitting the USSD message,

Generating, by the service server, a USSD message including the retrieved service information;

The service server sending the USSD message to a second HLR; And

And when the second HLR receives the USSD message, transmitting the received USSD message to the receiving mobile terminal.

The method of claim 11, wherein

Searching for the service information,

When the service server receives the USSD command, performing user authentication of the transmitting mobile terminal;

And retrieving service information corresponding to the received USSD command if the service server corresponds to a user without a prepaid fee charged by the user as a result of the user authentication.

delete

Receiving an Unstructured Supplementary Services Data (USSD) message from a service server according to a request of a transmitting mobile terminal;

Extracting service information included in the received USSD message; And

Outputting the outputted service information to at least one output unit for informing a user

The method of claim 16,

Receiving the USSD message,

And receiving the USSD message from the service server according to a request of the transmitting mobile terminal having no prepaid fee charged in the smart card to receive a mobile communication service.