KR101105414B1 - How to switch the coding method of short messages and smart card therefor - Google Patents

Abstract

The present invention relates to a method of switching a coding scheme of a short message and a smart card therefor.

When the short message is transmitted from the mobile terminal, the present invention checks the coding scheme applied to the short message, executes a coding scheme switching program, and converts the coding scheme of the received short message into a coding scheme mounted in the mobile terminal. Provided is a method of switching a coding scheme in a smart card delivered to a terminal. In addition, the present invention provides an interface module for receiving a short message from a mobile terminal or delivering a short message with a changed coding scheme to a mobile terminal; A memory for storing a coding scheme switching program for switching the coding scheme of the short message; And a microprocessor for identifying a coding scheme applied to the short message received from the mobile terminal, and converting the coding scheme of the short message into a coding scheme installed in the mobile terminal by using a coding scheme switching program, and then transferring the coding scheme to the interface module. To provide a smart card.

DCS, Coding, SMS, Short Message, Smart Card, USIM, KSC5601, UCS2

Description

Method for switching coding method of short message and smart card therefor {Method for Transforming Data Coding Scheme of SMS and Smartcard therefor}

The present invention relates to a method of switching a coding scheme of a short message and a smart card therefor. In particular, the present invention, if the coding scheme of the short message received by the mobile terminal is different from the coding scheme set in the mobile terminal, a method of switching the coding scheme of the received short message using a smart card and the structure of the smart card therefor It is about.

As computers, electronics, and communication technologies have made rapid progress, various mobile communication services such as voice call services, video call services, and wireless Internet services using wireless networks have been provided. In order to receive such a mobile communication service properly, the mobile communication system must accurately identify the terminal information of the subscriber. In other words, it is necessary to check whether the mobile terminal can make a video call, whether a multimedia messaging service (MMS) can be transmitted or received, and whether or not a wireless Internet service is available.

In the conventional mobile communication system, subscriber information and terminal information are used in the same concept. Therefore, the terminal information of the customer could be changed only through a processor called device change. However, as a smart card capable of storing data in a mobile communication system has been used, a method of storing subscriber information in a smart card and inserting and using a smart card in which the subscriber information is stored has been proposed. Through this method, subscriber information and terminal information could be separated.

Smart cards are also referred to as Universal Integrated Circuit Cards (UICCs), and they contain microprocessors (MPUs), memory, smart card operating systems (COS), and security algorithms. COB (Chip On Board) type card with mass storage function. Smart cards used in mobile communication systems include subscriber identity module (SIM) cards used in GSM systems, user identity modules (UIM) used in CDMA systems, and universal subscriber identity module (USIM) cards used in WCDMA systems. There is this.

Such smart cards include a variety of subscriber information, including subscriber identification numbers (IMSIs), function and environment variable values, service network information, service tables, subscriber authentication keys, call duration and billing information, and the unique ID of the smart card. Various smart card information such as encryption key and data service variable value are stored.

In addition, as the storage capacity of a smart card increases due to the development of memory technology, a mobile terminal may be stored in a smart phone card, a received short message or a multimedia message, or a captured video or photo. Even if this is changed, a technology for allowing a phone book, a short message, a multimedia message, a video, or a picture stored in a smart card to be used as it is in a changed mobile terminal is provided.

On the other hand, short message service (SMS) among the services provided by the mobile communication network is a service that sends and receives short text messages of 80 Byte to 90 Byte regardless of the call between the mobile terminal and the mobile terminal, the mobile terminal and the company Unlike e-mail, it is widely used due to the advantage that the contents are delivered to the receiver at the same time as the sender.

As a data coding method of such a short message, a Korean complete code (KSC5601) method specified by the Korean Industrial Standard and a Universal Character Set 2 (UCS2) method specified by the International Code Standard are used. A mobile terminal produced in Korea mainly applies a KSC5601 scheme to perform a short message coding operation, while a mobile terminal produced overseas uses a UCS2 scheme mainly to perform a short message coding task.

As the third generation mobile communication method supports terminal mobility, a user can be provided with a mobile communication service according to the corresponding customer information by using any terminal by inserting a smart card containing the customer information into the mobile terminal. . Accordingly, mobile terminals produced overseas have also been used in Korea.

However, at present, a mobile terminal produced in Korea cannot recognize a short message coded using the UCS2 method, and a mobile terminal produced overseas cannot recognize a short message coded using the KSC5601 method. Short messages sent and received between mobile terminals produced in foreign countries is a problem that can not be confirmed broken characters.

In order to solve this problem, the short message transmission / reception program installed in the mobile terminal should be changed to code both the KSC5601 method and the UCS2 method. However, there is a problem in that changing the program by collecting a previously produced mobile terminal consumes a lot of time and money.

Accordingly, there is a demand for a technique for controlling the recognition of both the KSC5601 type short message and the UCS2 type short message without performing a complicated task of changing a program mounted in the mobile terminal.

SUMMARY OF THE INVENTION The present invention provides a method of switching a coding method of a received short message using a smart card when a coding method of a short message received at a mobile terminal is different from a coding method set at the mobile terminal. It is to provide the structure of smart cards.

In the coding method switching method according to an embodiment of the present invention, a smart card switches a coding method of a short message received from a mobile communication network. (A) When a short message is transmitted from a mobile terminal, a coding method applied to the short message Confirming; (b) executing a coding scheme switching program loaded in advance, and converting the coding scheme of the short message into a coding scheme mounted in the mobile terminal; And (c) delivering the short message with the changed coding scheme to the mobile terminal.

In addition, the smart card according to an embodiment of the present invention is a smart card for switching the coding scheme of the short message, the interface module for receiving a short message from the mobile terminal, or transfers the short message with the coding scheme is switched to the mobile terminal; A memory for storing a coding scheme switching program for switching the coding scheme of the short message; And a microprocessor that checks a coding scheme applied to the short message received from the mobile terminal, calls a coding scheme switching program from a memory, converts the coding scheme of the short message into a coding scheme mounted in the mobile terminal, and delivers it to the interface module. It includes.

According to the present invention, by changing the coding scheme of the short message using a smart card, the short message transmitted and received between mobile terminals equipped with different coding schemes can be displayed accurately without breaking, and accordingly, a mobile produced overseas For the use of the terminal, there is a convenience that can be used immediately without having to perform a complicated procedure of changing the mounted program.

In addition, in order to apply both the KSC5601 method and the UCS2 method in the transmission and reception of a short message in a mobile communication system, it is not necessary to perform a complicated task of changing a program after collecting existing mobile terminals. In other words, it is possible to use both the KSC5601 method and the UCS2 method for sending and receiving short messages only by issuing a smart card equipped with a coding method switching program for short messages to mobile subscribers, thereby reducing costs and time. You can expect

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, the terms “… unit”, “… unit”, “module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. have.

1 is a diagram schematically showing a mobile communication system according to the present invention.

The mobile communication system according to the present invention is composed of a mobile terminal 110 and a mobile communication network 120 including a smart card 112, the mobile communication network 120 is a radio base station 122, the switching center 124, Message service center 126 and additional service server 128;

The mobile terminal 110 is a terminal capable of receiving various mobile communication services, such as a voice call service, a text message transmission and reception service, and a wireless Internet service. The mobile terminal 110 includes a slot for inserting the smart card 112, sets up a session with the mobile communication network by calling subscriber information and smart card information from the inserted smart card 112, and establishes a set session. It transmits and receives data related to mobile communication service such as voice call, video call, short message, multimedia message and wireless internet contents.

In addition, the mobile terminal 110 is equipped with a variety of programs for executing a mobile communication service. That is, the mobile terminal 110 includes various programs such as a voice / video call program, a text message service program, a content playback program, a browsing program, and an entertainment program.

Here, the text message service program may be classified into a message transmission / reception program, a message preparation program, a message analysis program, and the like, and the message preparation program and the message analysis program perform coding operations for encoding and decoding messages to be transmitted and received. Here, the mobile terminal performs a coding operation of the short message using the KSC5601 method or the UCS2 method. For this purpose, the mobile terminal is equipped with a KSC5601 method or a UCS2 method.

In this case, the mobile terminal 110 may use various data coding schemes other than the KSC5601 scheme or the UCS2 scheme. However, the mobile terminal 110 will be described with reference to two coding schemes.

When encoding and decoding a short message transmitted and received using such a coding program, the mobile terminal equipped with the KSC5601 type coding program does not interpret the short message coded using the UCS2 method and displays characters in a broken state. do. On the contrary, the mobile terminal equipped with the UCS2 coding program cannot interpret the short message coded by the KSC5601 method and displays the text in a broken state.

Accordingly, the mobile terminal 110 according to an embodiment of the present invention transfers the received short message to the inserted smart card 112 when the short message coded in a different manner from the mounted coding program is received and the letters are broken. It performs the function.

The smart card 120 stores subscriber information including subscriber identification number, mobile communication network information, subscriber authentication key, and smart card information such as unique ID, encryption key, and data service variable value. In addition, it stores a smart card operating system for the operation of the smart card 120, and stores various programs that are executed in the smart card 120 itself. The smart card 120 stores a phone book, a call list, a short message, a multimedia message, and the like.

The smart card 120 according to an embodiment of the present invention is equipped with a coding scheme switching program for converting a short message coded by the KSC5601 scheme into a UCS2 scheme or by converting a short message coded by the UCS2 scheme into the KSC5601 scheme.

The internal configuration and function of the smart card 120 will be described in detail with reference to FIG. 2.

The wireless base station 122 connects the mobile terminal 110 and the switching center 124 to transfer a call, a message call, and a data call between the mobile terminal 110 and the switching center 1240. In addition, the wireless base station 122 receives the subscriber information and the smart card information from the mobile terminal 110 in the area of the cell (Cell) jurisdiction to perform the function of setting the location registration.

The exchange 124 performs various processing functions for the mobile communication service, such as voice / video call service processing, message service processing, additional service processing, location registration procedure and handoff procedure processing, and interworking function with another network. That is, the switching center 124 authenticates the subscriber and the smart card 112 by using the subscriber information and the smart card information transmitted from the mobile terminal 110, and provides various mobile communication services to the mobile terminal 110. It serves to provide. That is, when the short message is transmitted from the originating mobile terminal, the switching center 124 according to the embodiment of the present invention transmits the information of the originating mobile terminal and the received short message to the message service center 126, and the message service center 126. When the request for transmission of the short message is inputted from), it checks the incoming information included in the short message transmission request, and transmits the short message to the destination mobile terminal.

When the short message transmission request is received from the switching center 124, the message service center 126 stores the short message transmitted from the originating mobile terminal in a predetermined area, confirms the information of the incoming mobile terminal from the short message transmission request, and the information. Configures a short message to be sent to the checked mobile terminal and transmits it through the switching center 124. At this time, the message service center 126 deletes the stored short message when a message indicating that the called mobile terminal confirms the short message sent.

The additional service server 128 is a server that provides various additional services such as an information service, a wireless Internet service, a game service, a financial service, and a broadcast service. The additional service server 128 transmits / receives data related to the provision of the additional service through the switching center 124 or the message service center 126. Accordingly, the data transmitted from the additional service server 128 may be converted into a short message form or a multimedia message form in the message service center 126 and transmitted to the mobile terminal 110.

2 is a block diagram schematically showing the internal structure of a smart card according to an embodiment of the present invention.

Smart card 112 according to an embodiment of the present invention is subscriber information storage module 210, smart card information storage module 220, data storage module 230, program storage module 240, operating system management module 250 ), A data coding scheme (DCS) conversion module 260, a control module 270, and an interface module 280.

The subscriber information storage module 210 is an area for storing subscriber information such as subscriber identification number, mobile communication network information, subscriber authentication key, and the like. The smart card information storage module 220 includes a unique ID, an encryption key, This area is used to store data service variable values.

The data storage module 230 is an area in which various data such as a phone book, a call list, a short message transmitted and received, a multimedia message, a picture, a video, and the like are stored.

The program storage module 240 is a part in which programs for various tasks performed in the smart card 112 are stored. Here, the program storage module 240 according to the embodiment of the present invention checks the coding scheme of the text message transmitted from the mobile terminal 110, and then changes the coding scheme, and the mobile terminal again returns the text message with the coding scheme switched. The coding scheme switching program transmitted to 110 is stored.

The subscriber information storage module 210, the smart card information storage module 220, the data storage module 230, and the program storage module 240 described above are components that perform a memory function for storing data, each of which is separate. It may be implemented as a component of, some components may be implemented in a combined form, all may be implemented in a single component.

The operating system management module 250 stores and executes an operating system of the smart card 110. Here, in implementing the smart card 110, the operating system of the smart card 110 may be stored in the program storage module 240. In this case, when power is supplied to the mobile terminal 110, the operating system management module 250 calls and executes a program related to the operating system from the program storage module 240.

When the short message is received from the mobile terminal 110, the DCS switching module 260 calls the coding scheme switching program from the program storage module 240 to switch the coding scheme of the short message. That is, according to the embodiment of the present invention, the DCS switching module 260 checks the coding scheme of the short message received from the mobile terminal 110 and switches the short message to a coding scheme other than the confirmed coding scheme. For example, if the short message transmitted from the mobile terminal 110 is coded by the KSC5601 scheme, the short message of the KSC5601 scheme is converted into a short message of the UCS2 scheme using a coding scheme switching program. On the contrary, if the short message transmitted from the mobile terminal 110 is coded using the UCS2 scheme, the short message of the UCS2 scheme is converted to the short message of the KSC5601 scheme using a coding scheme switching program.

The short message thus converted is stored in the data storage module 230, and when a request of the mobile terminal user is input, the short message is transmitted and displayed to the mobile terminal 110.

The control module 270 is an overall control part of the operation of the smart card 112. The control module 270 analyzes and stores various data including a control command or a short message received through the interface module 280, and stores the subscriber information storage module. In operation 210, the smart card information storage module 220 and the various data stored in the data storage module 230 are called and transferred to the mobile terminal 110 through the interface module 280.

The operating system management module 250, the DCS switching module 260, and the control module 270 described above are components that perform functions of a microprocessor that performs data processing in the smart card 112, and are each separately. It may be implemented as a component of, some components may be implemented in a combined form, all may be implemented in a single component.

The interface module 280 serves to provide an interface for transmitting and receiving control commands and various data between the mobile terminal 110 and the smart card 112. That is, when power is supplied to the mobile terminal 110, the interface module 280 transfers subscriber information and smart card information that are called from the subscriber information storage module 210 and the smart card information storage module 220 to the mobile terminal 110. In this case, according to an embodiment of the present invention, the short message transmitted from the mobile terminal 110 is transferred to the data storage module 230, and the short message whose coding scheme is switched by the DCS switching module 260 is moved. Performs a function provided to the terminal 110.

3 is a flowchart illustrating a method of switching a coding scheme of a short message in a smart card according to an embodiment of the present invention.

According to an embodiment of the present invention, when a short message is received from the mobile communication network (S302), the mobile terminal 110 checks the coding scheme of the received short message (S304), and the coding scheme of the short message is the mobile terminal 110. It is checked whether or not it is the same as the data coding scheme set in step S306).

If the coding scheme of the short message and the data coding scheme of the mobile terminal 110 are the same, the received short message is displayed. However, when the coding method of the short message is different from the data coding method of the mobile terminal 110, and a situation in which the content of the short message is broken occurs, the received short message is transmitted to the smart card 112 (S308).

When the smart card 112 receives the short message, the smart card 112 stores the received short message in the data storage module 230 (S310) and checks the coding scheme of the short message received through the DCS conversion module 260. When the coding scheme of the short message is confirmed (S312), a message for confirming whether the coding scheme switching operation is executed is generated and transmitted to the mobile terminal 110 (S314).

The mobile terminal 110 receiving the coding scheme switching task execution confirmation message displays a screen for receiving a command for whether to execute the coding scheme switching task (S316). If the user is requested to execute the coding scheme switching operation (S318), the mobile terminal 110 generates a message requesting coding scheme switching of the short message and transmits it to the smart card 120 (S320).

The smart card 120 calls a coding scheme switching program stored in the program storage module 240 to switch the coding scheme of the short message. Then, the coding scheme switching program is executed to switch the coding scheme of the short message. That is, if the short message is coded in the KSC5601 method, the coding method switching program is executed to convert to the UCS2 short message. (S322).

The DCS conversion module 260 transfers and stores the short message in which the coding scheme switching operation is completed, to the data storage module 230 (S324). In operation S326, the mobile terminal 110 transmits a short message in which a coding scheme switching operation is completed.

When the mobile terminal 110 receives the short message in which the coding scheme switching operation is completed from the smart card 112, the mobile terminal 110 displays the received short message (S328).

In this case, when the smart card 112 checks the coding scheme of the short message, the smart card 112 may be set to switch the coding scheme unconditionally without being checked whether the coding scheme switching operation is executed. When the unconditional switching of the coding scheme is set as described above, steps S314 to S32 may be omitted.

Through the above method, when a short message transmitted by a coding scheme different from the coding scheme mounted on the mobile terminal 110 into which the smart card 112 is inserted is received, the coding scheme is used by using the smart card 112. Can be switched and displayed.

The embodiments of the present invention described above are not only implemented by the apparatus and method but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded, The embodiments can be easily implemented by those skilled in the art from the description of the embodiments described above.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a diagram schematically showing a mobile communication system according to the present invention.

2 is a block diagram schematically showing the internal structure of a smart card according to an embodiment of the present invention.

3 is a flowchart illustrating a method of switching a coding scheme of a short message in a smart card according to an embodiment of the present invention.

Claims (9)

In the method for the smart card to switch the coding scheme of the short message received from the mobile communication network, (a) when the short message is transmitted from the mobile terminal, storing the short message in a preset data storage area and confirming a coding scheme applied to the short message; (b) comparing the first coding scheme applied to the mobile terminal with the second coding scheme applied to the short message and confirming that the first coding scheme is different from the second coding scheme; (c) executing a pre-loaded coding scheme switching program to convert the second coding scheme of the short message into the first coding scheme mounted in the mobile terminal; And (d) delivering the short message with the coding scheme switched to the mobile terminal; Method of switching a coding method of a short message comprising a. The method of claim 1, Prior to step (a) above, Receiving, by the mobile terminal, the short message from the mobile communication network; Comparing the first coding scheme applied to the mobile terminal with the second coding scheme applied to the short message received from the mobile communication network; And If the first coding scheme and the second coding scheme are different, transmitting the short message to a smart card inserted in the mobile terminal. How to switch the coding method of the short message further comprising. delete The method of claim 1, Step (d) is, (d1) storing the short message of which the coding scheme is switched in a preset data storage area; (d2) transmitting a short message of which the coding scheme is switched, to the mobile terminal; And (d3) displaying a short message of which the coding scheme is switched in the mobile terminal; Method of switching a coding method of a short message comprising a. 5. The method of claim 4, Step (c) is, By using the coding scheme switching program, the short message to which the KSC5601 coding scheme is applied is converted into a short message of the UCS2 coding scheme, or the short message to which the UCS2 coding scheme is applied is converted into the short message of the KSC5601 coding scheme. How to switch the coding method of short messages. In the smart card for switching the coding method of the short message, An interface module for receiving a short message from a mobile terminal or for transmitting a short message of which a coding scheme has been switched to the mobile terminal; A memory for storing a coding scheme switching program for switching the coding scheme of the short message; And Identify a coding scheme applied to the short message received from the mobile terminal, and call the coding scheme switching program from the memory to switch the coding scheme of the short message to a coding scheme mounted in the mobile terminal, Microprocessor Including, the memory, The memory, A data storage module for storing a short message received from the mobile terminal or a short message whose coding scheme is switched by the microprocessor; A program storage module for storing the coding scheme switching program and various programs executed in the smart card; A subscriber information storage module for storing mobile terminal subscriber information including subscriber identification number and mobile communication network information; And A smart card comprising a smart card information storage module that stores smart card information including a unique ID of the smart card and a data service variable value. delete The method of claim 6, The microprocessor, A data coding scheme conversion module for identifying a coding scheme applied to the short message and converting the coding scheme of the short message into a coding scheme mounted in the mobile terminal by calling the coding scheme switching program; An operating system management module for storing and executing an operating system of the smart card; And Control module for controlling the operation of the smart card as a whole, and processing data transmission and reception with the interface module Smart card that includes. The method of claim 6, The microprocessor, By using the coding scheme switching program, the short message to which the KSC5601 coding scheme is applied is converted into a short message of the UCS2 coding scheme, or the short message to which the UCS2 coding scheme is applied is converted into the short message of the KSC5601 coding scheme. Smart card.

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