KR20070075108A - Method for different typed network additional service processing of mobile terminal and the mobile terminal therefor - Google Patents

Abstract

A heterogeneous network additional service processing method of a mobile communication terminal and the mobile communication terminal therefor are provided to mount a subscriber identity module of a GSM(Global System for Mobile communication) network subscriber on the terminal located in a CDMA(Code Division Multiple Access) network, so that the GSM subscriber can use an additional service operated in a GSM network through an inbound roaming service. An RF(Radio Frequency) unit(130) performs wireless signal processing of the first communication network. A subscriber identity module connector(190) is mounted with a subscriber identity module(191) which stores subscriber information of the second communication network subscriber who is to receive an inbound roaming service. A memory(110) stores menu screen information which demands an additional service for the second communication network subscriber. A controller(120) generates a request text message for demanding a random additional service selected through a menu screen to the second communication network, and sends the message to the second communication network through the inbound roaming service for the second communication network subscriber.

Description

Method for processing heterogeneous network supplementary service of mobile communication terminal and mobile communication terminal for same {METHOD FOR DIFFERENT TYPED NETWORK ADDITIONAL SERVICE PROCESSING OF MOBILE TERMINAL AND THE MOBILE TERMINAL THEREFOR}

1 is an overall configuration diagram of a mobile communication system for performing heterogeneous network additional service processing of a mobile communication terminal according to an embodiment of the present invention.

2 is a block diagram of a mobile communication terminal equipped with a heterogeneous network additional service processing function according to an embodiment of the present invention.

3 is a structural diagram of text message bearer data processed by a mobile communication terminal according to an embodiment of the present invention;

4 is a flowchart for setting an operation mode in a mobile communication terminal according to an embodiment of the present invention.

5 is a flowchart illustrating a procedure for processing an additional service of a heterogeneous network performed by a mobile communication terminal according to an embodiment of the present invention.

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

100: mobile communication terminal 110: memory

120: control unit 121: mobile communication processing unit

122: operation processing unit 123: screen display processing unit

124: message processing unit 125: transmission processing unit

126: reception processing unit 130: RF unit

140: voice processing unit 150: speaker

160: microphone 170: key input unit

180: display unit 190: subscriber identification module connection unit

191: subscriber identification module

The present invention relates to processing of a heterogeneous network supplementary service of a mobile communication terminal. Specifically, a subscriber identity module of a subscriber to a Global System for Mobile communication (GSM) mobile communication network is provided to a mobile communication terminal in a code division multiple access (CDMA) mobile communication network. The present invention relates to a method for processing a heterogeneous network supplementary service of a mobile communication terminal that enables a supplementary service operated in a GSM mobile communication network to a subscriber of a corresponding GSM mobile network through an inbound roaming service, and a mobile communication terminal therefor.

With the development of mobile communication network, research on the interworking technology between CDMA mobile communication network and GSM mobile communication network has been actively conducted.

In the conventional case, when a subscriber of a GSM mobile communication network needs to use a mobile communication service from a CDMA mobile communication network, a subscriber of the GSM mobile communication network has its own GSM terminal operable in the CDMA mobile communication network with roaming service between the GSM mobile communication network and the CDMA mobile communication network. The user may register and use a subscriber identity module (SIM) in a mobile communication terminal in a CDMA mobile communication network, and then use a CDMA mobile communication service through a registration process in the CDMA mobile communication network.

However, even in such a case, the GSM mobile subscriber should perform additional service setting tasks such as registration or release of various additional services that he or she could easily perform in the GSM mobile communication network through voice call or data service in the environment of the CDMA mobile communication network. It is difficult or time-consuming or expensive inconveniences.

Because the subscriber of the GSM mobile communication network needs to access the home location register (HLR) of the GSM mobile communication network which manages the additional service for the GSM mobile subscriber in order to perform the setting operation for the additional service of the GSM mobile communication network. This is because when the CDMA mobile communication service is used through the roaming service, the roaming service cannot access the HLR of the GSM that manages an additional service for the corresponding GSM mobile subscriber.

SUMMARY OF THE INVENTION The present invention provides a GSM mobile communication network for a GSM mobile communication network subscriber in case of using a first communication service by mounting a subscriber identity module of a GSM mobile communication network subscriber to a mobile communication terminal in a first communication network such as a CDMA mobile communication network. The purpose of the present invention is to enable various configuration tasks of an additional service operated by.

According to an aspect of the present invention for achieving the technical problem, the first step of executing the inbound roaming service mode for the second network subscriber in the first network area, and the inbound roaming service mode is executed by the first step A second step of displaying a supplementary service menu for the second communication network subscriber on the screen, and a third step of generating a request text message for requesting the supplementary service selected by the supplementary service menu to the second communication network; And a fourth step of transmitting the generated request text message to the second communication network through the inbound roaming service.

Preferably, the heterogeneous network additional service processing method of a mobile communication terminal according to an aspect of the present invention provides a second communication network which receives the request text message and performs a task according to the requested additional service to inform a result of the additional service processing. And receiving a response text message to be transmitted through the inbound roaming service and displaying the response text message on a screen.

Preferably, the first step reads the second subscriber information from the subscriber identification module installed in the corresponding mobile communication terminal and registers the inbound roaming service in the first communication network.

Preferably, the third step may include setting a value indicating that the text message is a text message for performing an additional service in the request text message, and the supplementary service in the text message for performing the additional service. And setting a corresponding value in each field provided to perform a function for requesting the request.

Preferably, the setting of the corresponding value in each of the fields may include setting a value for indicating that the message is an additional service request message in the first field and displaying the type of additional service requested through the message in the second field. And a value for inputting a password for a service requiring a user's password input among additional services in the third field.

Preferably, the fifth step is a sixth step of reading a field in which a value indicating that the text message is a text message for performing an additional service is set in the response text message, and the text message is provided in the read field. If a value indicating that the text message is to be performed is set, the text message reads each field provided to perform the function of informing the result of the additional service processing among the text messages for performing the additional service and displays the corresponding information on the screen. It includes a seventh step.

Preferably, the seventh step may include reading a field in which a value for indicating that the text message is an additional service processing message and reading a field in which a value indicating the type of the additional service requested through the text message is set; The step of selecting a field for setting a value for indicating a processing result of the requested additional service is selected from the step of reading a field for setting a value for indicating a status of the additional service according to the status inquiry of the requested additional service. Include them.

Preferably, the first communication network is a CDMA mobile communication network.

Preferably, the second communication network is a GSM mobile communication network.

According to another aspect of the present invention, there is provided an RF unit for performing wireless signal processing of a first communication network, and a subscriber identity module access unit for mounting a subscriber identity module storing subscriber information of a second communication network subscriber to receive inbound roaming service; And a memory for storing menu screen information for requesting an additional service for the second communication network subscriber, and a request text message for requesting an optional additional service selected through the menu screen to the second communication network. It provides a mobile communication terminal with a heterogeneous network additional service processing function including a control unit for transmitting to the second communication network through an inbound roaming service for a subscriber.

Preferably, the control unit includes an operation processing unit for executing an inbound roaming service mode for a second communication network subscriber in the first communication network area, and an additional service menu for the second communication network subscriber with the inbound roaming service mode executed by the operation processing unit. A screen display processing unit for displaying a screen on a screen, a message processing unit for generating a request text message for requesting the additional service selected by the additional service menu to the second communication network, and the inbound roaming service for the generated request text message. It includes a transmission processing unit for transmitting to the second communication network through.

Preferably, the control unit receives a request text message through the inbound roaming service to receive a response text message transmitted by the second communication network performing the operation according to the requested additional service as a result of the processing of the additional service. It may further include.

Preferably, the request text message includes a field for setting a value indicating that the text message is a text message for performing an additional service, and for requesting an additional service from a text message for performing the additional service. Contains a field for setting a value for performing a function.

Preferably, a field for setting a value for performing a function for requesting an additional service includes: a first field in which a value for indicating that the text message is an additional service request message is set; And a second field in which a value indicating a type of service is set and a third field in which a value for inputting a password for a service that requires a user's password input among additional services is set.

Preferably, the response text message includes a field in which a value indicating that the text message is a text message for performing an additional service is set, and a function of informing the result of the additional service processing among the text message for performing the additional service. It includes each field provided to perform.

Preferably, each field provided to perform the function of informing the result of the additional service processing is a field in which a value for indicating that the text message is an additional service processing message is set, and the type of the additional service requested through the text message. Among the fields in which a value indicating a value is set, a field in which a value for indicating a processing result of a requested additional service is set, and a field in which a value for indicating a state of the additional service according to the status inquiry of the requested additional service is set Contains the selected fields.

Preferably, the first communication network is a CDMA mobile communication network.

Preferably, the second communication network is a GSM mobile communication network.

According to still another aspect of the present invention, there is provided an RF unit which performs radio signal processing of a first communication network or a second communication network, and a subscriber identity module storing subscriber information of the first communication network or the second communication network. And a memory for storing a menu screen for requesting additional service for a second communication network subscriber, setting the operation mode to an inbound roaming mode in the first communication network, and setting a menu screen. Heterogeneous network supplementary service processing function comprising a control unit for generating a request text message for requesting an additional supplementary service selected through the second communication network to the second communication network through an inbound roaming service for the second communication network subscriber; Provided is a mobile communication terminal provided.

Preferably, the control unit is configured to receive a response text message transmitted through the inbound roaming service by the second communication network receiving the request text message and performing a task according to the requested additional service as a result of the processing of the additional service. I can display it.

Preferably, the controller may set the operation mode to an outbound roaming mode in the second communication network to perform a second communication network service for the first communication network subscriber.

Preferably, the controller may set the operation mode to a first communication network mode in the first communication network to perform a first communication network service for the first communication network subscriber.

Hereinafter, a heterogeneous network additional service processing method of a mobile communication terminal and a mobile communication terminal therefor will be described with reference to the accompanying drawings.

1 is an overall configuration diagram of a mobile communication system for performing heterogeneous network additional service processing of a mobile communication terminal according to an embodiment of the present invention.

Referring to FIG. 1, a mobile communication system performing heterogeneous network additional service processing of a mobile communication terminal according to an embodiment of the present invention includes a mobile communication terminal 100 and a MSC (Mobile Switching) performing communication using a CDMA radio frequency. Center) 200, the network interlocking server 300 and GSM_HLR (400) is configured to include.

The mobile communication terminal 100 performs a CDMA mobile communication service using a CDMA radio frequency, and the subscriber of the GSM mobile communication network in the GSM mobile communication network with the subscriber identification module of the GSM mobile communication subscriber mounted on the subscriber identity module connection. Provides a menu screen to perform various additional service setting operation, generates a request text message for requesting any additional service selected through the corresponding menu screen to the GSM mobile communication network and transmits to the GSM_HLR 400 of the GSM mobile communication network. And, it receives the response text message transmitted from the GSM_HLR 400 of the GSM mobile communication network and displays it on the screen.

The MSC 200 provides an inbound roaming service to the mobile communication terminal 100 in conjunction with the network interworking server 300 so that the GSM subscriber of the subscriber identity module mounted on the mobile communication terminal 100 provides additional services in the GSM mobile communication network. Allows you to perform setup tasks.

The network interworking server 300 performs interworking between the CDMA network and the GSM mobile communication network through a roaming service between the CDMA mobile communication network and the GSM mobile communication network. To this end, the network interworking server 300 stores information of each network for interworking between the CDMA network and the GSM mobile communication network.

The network interworking server 300 receives a request text message transmitted from the mobile communication terminal 100 through the MSC 200 of the CDMA mobile communication network, transmits the request text message to the GSM_HLR 400 of the GSM mobile communication network, and transmits the requested additional service. A response text message transmitted by the GSM_HLR 400 of the GSM mobile communication network which has been processed is received and transmitted to the mobile communication terminal 100 through the MSC 200.

The GSM_HLR 400 manages subscriber information of the GSM mobile communication network, and sets up additional services such as registering or releasing additional services for each subscriber of the GSM mobile communication network at the request of the subscribers of the GSM mobile communication network. Perform management.

In addition, the GSM_HLR (400) when the additional service setting operation is requested for any GSM mobile network subscriber through the request text message from the mobile communication terminal 100 of the CDMA mobile communication network for the GSM mobile subscriber requesting the additional service setting operation By performing authentication and processing of the requested additional service, the requested additional service processing result is transmitted as a response text message to the mobile communication terminal in the CDMA mobile communication network through the inbound roaming service.

2 is a block diagram of a mobile communication terminal equipped with a heterogeneous network additional service processing function according to an embodiment of the present invention.

2, the mobile communication terminal 100 having a heterogeneous network additional service processing function according to an embodiment of the present invention includes a memory 110, a control unit 120, an RF unit 130, and a voice processing unit. 140, a speaker 150, a microphone 160, a key input unit 170, a display unit 180, a subscriber identity module connection unit 190, and a subscriber identity module 191. .

The memory 110 stores various menu screens for performing the corresponding mode according to the set operation mode of the mobile communication terminal 100.

For example, the memory 110 stores an operation screen for supporting each mode when the mobile communication terminal 100 can operate in domestic CDMA mode, inbound GSM mode, outbound GSM mode, and outbound CDMA mode. Doing.

In addition, the memory 110 stores menu screen information for performing a setting operation of an additional service for a GSM mobile communication network subscriber while the inbound roaming service is executed.

Additional services of the GSM mobile communication network which can perform the setting operation through the inbound roaming service while the mobile communication terminal 100 is set to the inbound GSM mode may be roughly classified into a call transfer service, a call restriction service, and a call waiting service. Can be.

Call transfer service is an additional service that allows a caller to automatically set a phone number set by a subscriber of a GSM mobile communication network.

Call restriction service is an additional service that prevents incoming calls to any incoming call. For example, you can prevent all international calls from reaching you, and limit incoming calls to certain phone numbers.

Call waiting service is an additional service that can hold a call during a call.

In this case, there may be various setting tasks for each additional service.

For example, in the transfer service, there may be a call transfer registration, transfer cancellation, and call transfer status inquiry.

Call restriction service may include call restriction registration, call cancellation, and call status inquiry.

Call waiting services can include call waiting registration, call waiting release, and call waiting status inquiry.

Therefore, the memory 110 stores menu screens for performing setting work for each of these additional services.

The user may select a setting operation of various additional services through the menu screen stored in the memory 110, request the GSM_HLR 400 through the inbound roaming service, and receive a response of the processing result.

In addition, the memory 110 generates a request text message requesting an additional service of a GSM mobile communication network subscriber, or receives and sends a response text message transmitted from the GSM_HLR 300 of a GSM mobile communication network to display on a screen. Stores information for processing bearer data.

In addition, when the subscriber identification module 191 of the GSM mobile subscriber is installed in the CDMA mobile communication network, the memory 110 performs various registration procedure roaming services for the CDMA mobile communication service based on the subscriber information stored in the corresponding subscriber identification module. Various data are stored.

For example, the memory 110 stores a frequency table for supporting CDMA operation defined in TIA / EIA / IS-2000 when the mobile communication terminal 100 operates in a CDMA mobile communication network. When the 100 operates in the mobile communication network of the GSM 900/1800, it stores a frequency table that satisfies the ETSI GSM specification.

In addition, the memory 110 stores a NAM corresponding to each operation mode so as to set a corresponding NAM (Number Assignment Module) in each operation mode, and stores a Preferred Roaming List (PRL) table for the roaming service.

In addition, the memory 110 temporarily stores a program executed by the controller 120 or temporarily stores data processed by the program. The memory 110 also stores the received short message and the telephone number table. The memory 110 includes a ROM for storing an operating program, an electrically programmable EEPROM, a RAM, and the like.

The controller 120 controls the overall operation of the mobile communication terminal and requests the GSM mobile communication network any additional service selected through a menu screen stored in the memory 110 to perform the additional service for the subscriber of the GSM mobile communication network. Send a request text message to the GSM mobile communication network through an inbound roaming service.

To this end, the control unit 120 controls the mobile communication processing unit 121, the operation processing unit 122, the screen display processing unit 123, the message processing unit 124, the transmission processing unit 125, and the reception processing unit 126. It is configured to include.

The mobile communication processing unit 121 is a module for performing a mobile communication service using a radio resource in a mobile communication terminal, and is configured and operated using a known mobile communication technology, and thus detailed description thereof will be omitted.

When the inbound roaming service mode is set according to the set operation mode, the operation processor 122 executes the inbound roaming service mode for the GSM mobile communication network subscriber in the CDMA network area. In this case, the operation processor 122 refers to a roaming service list stored in the memory 110 and performs a corresponding roaming service.

To this end, the operation processing unit 122 reads GSM mobile communication network subscriber information from the subscriber identification module 191 installed in the mobile communication terminal 100 and registers inbound roaming service with the MSC 200.

In addition, the operation processor 122 may perform outbound roaming services for domestic CDMA mobile communication subscribers in the GSM mobile communication network area.

In addition, the operation processor 122 may enable the outbound roaming service for domestic CDMA mobile communication subscribers in the overseas CDMA mobile communication network area.

The screen display processing unit 123 processes the additional service menu for the GSM mobile communication network subscriber and the additional service request to the GSM mobile communication network through the additional service menu while the inbound roaming service mode is executed by the operation processing unit 122. Various screens to be displayed are displayed on the display unit 180.

The additional service menu provided by the screen display processing unit 123 largely includes a menu screen for selecting a call transfer service, a call restriction service, and a call waiting service.

Each menu item enters into a detailed item menu by a user's selection, and the call transfer service has a menu item for requesting call transfer registration, call transfer cancellation, and call transfer status inquiry.

In addition, the call restriction service menu has detailed menu items for requesting call restriction registration, call cancellation, and call status inquiry. Call waiting service menu includes call waiting registration, call waiting release, and call waiting status inquiry. It has a detailed menu item that can be requested.

The message processing unit 124 generates a request text message for requesting the additional service selected by the additional service menu to the GSM_HLR 400 of the GSM mobile communication network through the text message technology.

In this case, the message processing unit 124 may encode / decode user data in the bearer data of the CDMA text message transport layer using a GSM-7 bit coding scheme. Accordingly, the additional service request message may be transmitted using a text message in the state set to the GSM inbound mode, and the additional service processing message received as a text message of GSM-7bit from the GSM mobile communication network may be processed.

3 is a structural diagram of a text message for heterogeneous network enhanced service according to an embodiment of the present invention, and is a structural diagram in a text message transport layer.

Referring to FIG. 3, a text message for a heterogeneous network supplementary service may include a message type field (1), a tele-service identifier (TID) field (2), a destination address field (3), and a bearer data field (5). It is configured to include. Field 4 in the figure indicates various option fields defined in the text message specification specified for the text message service.

The message type field 1 indicates that the text message is a message type.

The TID field 2 is a field for identifying which higher-level service should transmit or receive this message.

When the mobile communication terminal 110 performs an operation for performing setting of an additional service in the state set to the GSM inbound roaming service mode, the TID field is set to '32770 (0x8002)', for example.

Accordingly, when the TID field of the received text message is set to '32770', the message processing unit 124 recognizes and processes an additional service related message in the GSM inbound roaming service mode.

The destination address field 3 is a field in which the destination address of the text message is set, and is set to '1' when performing an additional service using the GSM inbound roaming service.

In the bearer data field 5, sub-parameters SUB RARAMETER_1... SUB RARAMETER_N for performing an additional service are set. The sub parameter fields set in the bearer data field are determined according to the request text message and the response text message.

In the case of the request text message, the sub parameter field included in the bearer data field includes a message identifier parameter field, an additional service type parameter field, and an encryption parameter field.

The message identifier parameter field is set to indicate that the text message is a request message for requesting an additional service.

In the additional service type parameter field, a value indicating the type of additional service requested through a corresponding text message is set.

In this case, the types of supplementary services may be classified into call transfer services, call restriction services, and call waiting services. Specifically, call transfer registration, transfer cancellation, and call transfer status inquiry may be performed in a transfer service. In the call waiting service, there may be call restriction registration, call cancellation, call status inquiry, and call waiting service in call waiting service, call release, and call waiting state inquiry.

Therefore, a value indicating the corresponding additional service is set in the additional service type parameter field.

The password parameter field is set for a password input for a service requiring user's password input in an additional service. For example, it can be used when changing the setting of call restriction service.

Meanwhile, in the case of an additional service processing message, the sub parameter field included in the bearer data field includes a message identifier parameter field, an additional service type parameter field, a processing result parameter field, and a status display parameter field.

In the message identifier parameter field, a value for indicating that the message is an additional service processing message is set.

In the additional service type parameter field, a value indicating the type of the additional service requested through the corresponding message is set.

In this case, the types of supplementary services may be classified into call transfer services, call restriction services, and call waiting services. Specifically, call transfer registration, transfer cancellation, and call transfer status inquiry may be performed in a transfer service. In the call waiting service, there may be call restriction registration, call cancellation, call status inquiry, and call waiting service in call waiting service, call release, and call waiting state inquiry.

Therefore, a value indicating the corresponding additional service is set in the additional service type parameter field.

In the processing result parameter field, a value for indicating a processing result for the requested additional service is set.

In the status display parameter field, a value for displaying the status of the additional service when it is inquired is set.

The transmission processor 125 transmits the generated additional service request message to the GSM_HLR 400 of the GSM mobile communication network through the inbound roaming service.

The reception processor 126 receives a response text message transmitted by the GSM_HLR 400 performing the operation according to the requested additional service as a result of processing of the additional service through the inbound roaming service.

The RF unit 130 is controlled by the controller 120. When the RF unit 130 receives a signal of a frequency received through a radio channel of a frequency band through the antenna ANT, it converts the band down and distinguishes the type of data and outputs it to the control unit 120 or the voice processing unit 140. )

The frequency band of the radio signal processed by the RF unit 130 is determined according to the mode supported by the mobile communication terminal 100. For example, the mobile communication terminal 100 may process a CDMA network frequency band or may process a GSM frequency band as it is operable in a GSM mobile communication network environment.

Accordingly, when the mobile communication terminal 100 operates in the CDMA mobile communication network, the RF unit 130 must support the CDMA operation defined in TIA / EIA / IS-2000, and operate in the mobile communication network of GSM 900/1800. In this case, the ETSI GSM specification must be satisfied.

Data output from the RF unit 130 to the control unit 120 becomes paging signals and signaling signals received through text data or a paging channel. The data output to the voice processor 140 becomes voice data received when a voice call is set.

In addition, the RF unit 130 performs band-up conversion to transmit the data received from the control unit 120 or the coded voice data received from the voice processing unit 140, and converts the signal into a radio signal of a frequency band through the antenna ANT. Output

The speech processing unit 140 is generally composed of a VOCODER, etc., and is driven by the control of the controller 120. The voice processor 140 modulates the electrical signal input by the microphone (MIC) 160 to convert the voice signal into voice data and outputs the voice signal to the RF unit 150. In addition, the speech processing unit 140 demodulates the encoded speech data input from the RF unit 130 into an electrical signal and outputs the result to the speaker (SPK) 150, and the speaker (SPK) 150 converts it into an audible sound. Output

The key input unit 170 generally has a key matrix structure. The key input unit 170 includes a plurality of numeric keys and function keys for performing various functions, and outputs an electrical signal of key data to the controller 120 by a user's key input.

The display unit 180 displays the current state of the terminal or changes in the progress of the program. It also displays incoming short messages. Such a display device may be configured as a display device such as a liquid crystal display (LCD).

The subscriber identification module connection unit 190 is an interface for mounting the subscriber identification module. Subscriber Identity Module (SIM) 191 stores subscriber information. For example, the subscriber identification module may store the information of the CDMA network subscriber or the subscriber information of the GSM mobile communication network according to the mobile communication network in which the corresponding subscriber identification module is used.

The subscriber identification module (SIM) 191 stores an International Mobile Subscriber Number (IMSN) and a Personal Identification Number (PIN).

Subscriber identification module 191 is in the form of a card that can be inserted into the mobile communication terminal (100).

The subscriber identification module 191 may store subscriber information of a CDMA mobile communication network, information of a GSM mobile communication network subscriber, and information of an overseas CDMA mobile communication network subscriber.

4 is a flowchart for setting an operation mode in a mobile communication terminal according to an embodiment of the present invention.

Referring to FIG. 4, when there is a request for executing a menu for setting an operation mode from the user through the key input unit 170, the screen display processing unit 123 reads the operation mode setting screen information stored in the memory 110 and displays the display unit ( The operation mode setting screen is displayed at 180 (S1).

If any operation mode is selected by the user's selection operation while the operation mode setting screen is displayed on the display unit 180, the operation processor 122 determines the operation mode selected by the user (S2).

The operation processor 122 sets the operation mode set in accordance with the operation mode selected by the user to the memory 110 and executes a reboot (S3, S4, S5, and S6).

5 is a flowchart illustrating a procedure for processing an additional service of a heterogeneous network performed by a mobile communication terminal according to an embodiment of the present invention.

Referring to FIG. 5, when the inbound roaming service mode is set according to the set operation mode, the operation processor 122 may perform the GSM subscriber from the subscriber identification module 191 to execute the inbound roaming service mode for the GSM mobile communication network subscriber in the CDMA network area. Read the information (S11).

The operation processor 122 performs inbound roaming service registration with the MSC 200 of the CDMA mobile communication network based on the GSM subscriber information read from the subscriber identification module 191 (S12).

When the user registration is completed, the mobile communication terminal 100 is in a state capable of performing inbound GSM roaming service.

If there is a request to execute a menu for setting an additional service of the GSM mobile communication network through the key input unit 170, the screen display processing unit 123 reads the additional service menu screen information stored in the memory 110 accordingly. The menu is displayed on the display unit 180 as a screen (S13).

The message processing unit 124 determines whether an optional additional service is requested through the additional service menu screen displayed on the display unit 180 by the screen display processing unit 123 (S14).

The message processing unit 124 generates the request text message by setting corresponding information in each field of the request text message for requesting the additional service selected by the additional service menu to the GSM_HLR 400 of the GSM mobile communication network (S15).

When the request text message to be transmitted to the GSM_HLR 400 is generated by the message processing unit 124, the transmission processing unit 125 transmits the generated additional service request message to the GSM_HLR 400 of the GSM mobile communication network through the inbound roaming service (S16). ).

Accordingly, the GSM_HLR 400 that receives the request text message transmitted from the mobile communication terminal 100 performs an operation for processing the requested additional service after authentication of the GSM mobile communication subscriber who requested the additional service setting operation. The result of the processing is generated as a response text message and transmitted to the mobile communication terminal 100 in the CDMA mobile communication network through the inbound roaming service.

Accordingly, after the request text message is transmitted to the GSM_HLR 400 by the transmission processor 125, the reception processor 126 determines whether a response text message transmitted from the GSM_HLR 400 is received (S17).

When the response text message is received from the GSM_HLR 400 as a result of the determination by the reception processor 126, the message processor 122 reads each field included in the received response text message and displays the processing result for the requested additional service. The display on the screen through the 123 (S18).

The present invention has been described with reference to preferred embodiments. However, those skilled in the art will understand that many other embodiments other than those specifically described also fall within the spirit and scope of the invention.

According to the present invention, a mobile station in a CDMA mobile communication terminal is equipped with a subscriber identity module of a subscriber of a GSM mobile communication network, and is operated in a GSM mobile communication network to a subscriber of the GSM mobile communication network through an inbound roaming service using a text message. Various settings of the additional service can be changed.

Accordingly, the subscriber of the GSM mobile communication network can easily perform the additional service that he / she easily changed various settings in the GSM mobile communication network by using a text message in the CDMA mobile communication network. It can provide convenience to mobile network subscribers.

Claims (22)

A first step of executing an inbound roaming service mode for a second network subscriber in a first network area; A second step of displaying, on the screen, an additional service menu for a second network subscriber in a state where the inbound roaming service mode is executed by the first step; Generating a request text message for requesting an additional service selected by the additional service menu to the second communication network; And a fourth step of transmitting the generated request text message to the second communication network through the inbound roaming service. The method according to claim 1, Receiving a request text message and receiving a response text message transmitted by the second communication network performing the operation according to the requested additional service to inform the result of the additional service processing through the inbound roaming service and displaying on the screen; The heterogeneous network additional service processing method of the mobile communication terminal further comprising the step. The method according to claim 1, wherein the first step, The method for processing heterogeneous network supplementary services of a mobile communication terminal which reads the second subscriber information from the subscriber identification module installed in the corresponding mobile communication terminal and registers inbound roaming service in the first communication network. The method of claim 1, wherein the third step, Setting a value indicating that the text message is a text message for performing an additional service in the request text message; And setting a corresponding value in each field provided for performing a function for requesting an additional service in a text message for performing the additional service. The method of claim 4, wherein setting the corresponding value in each field comprises: Set a value to indicate that the message is a supplementary service request message in a first field, In the second field, a value indicating the type of additional service requested through the message is set. And setting a value for inputting a password for a service requiring a user's password in the additional service in the third field. The method of claim 2, wherein the fifth step, A sixth step of reading, in the response text message, a field having a value indicating that the text message is a text message for performing an additional service; When a value indicating that the text message is a text message for performing an additional service is set in the read field, to perform a function of notifying the result of the additional service processing in the text message for performing the additional service. And a seventh step of reading each field provided and displaying the corresponding information on the screen. The method of claim 6, wherein the seventh step, Reading a field set with a value to indicate that the text message is an additional service processing message; Reading a field in which a value indicating the type of the additional service requested through the text message is set; A field in which a value is set for indicating a result of processing for the requested supplementary service; A method for processing a heterogeneous network supplementary service of a mobile communication terminal, the method comprising selecting steps of reading a field in which a value for indicating a state of an supplementary service is set according to the inquiry of the requested supplementary service. The method of claim 1, wherein the first communication network is a CDMA mobile communication network. The method of claim 1, wherein the second communication network is a GSM mobile communication network. An RF unit for performing radio signal processing of the first communication network; A subscriber identity module connection for mounting a subscriber identity module storing subscriber information of a second network subscriber to receive inbound roaming services; A memory for storing menu screen information for requesting an additional service for the second communication network subscriber; A heterogeneous network including a control unit for generating a request text message for requesting an optional additional service selected through the menu screen to a second communication network and transmitting the request text message to the second communication network through an inbound roaming service for the second communication network subscriber; A mobile communication terminal equipped with an additional service processing function. The method of claim 10, wherein the control unit, An operation processor for executing an inbound roaming service mode for a second network subscriber in a first network region; A screen display processing unit for displaying an additional service menu for a second communication network subscriber in a state where an inbound roaming service mode is executed by the operation processing unit; A message processing unit which generates a request text message for requesting the additional communication service selected by the additional service menu to the second communication network; And a transmission processing unit for transmitting the generated request text message to the second communication network through the inbound roaming service. The method of claim 11, wherein the control unit, The heterogeneous apparatus further includes a reception processor configured to receive, through the inbound roaming service, a response text message transmitted by the second communication network that receives the request text message and performs the operation according to the requested additional service as a result of the processing of the additional service. A mobile communication terminal equipped with a network additional service processing function. The method of claim 10, wherein the request text message, A field for setting a value indicating that the text message is a text message for performing an additional service; And a field for setting a value for performing a function for requesting an additional service in a text message for performing the additional service. The method of claim 13, wherein the field for setting a value for performing a function for requesting the additional service is: A first field having a value set to indicate that the text message is an additional service request message; A second field having a value indicating a type of additional service requested through the text message; A mobile communication terminal with a heterogeneous network supplementary service processing function, characterized in that it comprises selected fields from among third fields in which a value for inputting a password for a service requiring a user's password input is set. The method of claim 12, wherein the response text message, A field set with a value indicating that the text message is a text message for performing an additional service; A mobile communication terminal equipped with a heterogeneous network supplementary service processing function including a field provided for performing a function for informing a result of an supplementary service processing in a text message for performing an supplementary service. The method according to claim 15, wherein each field provided to perform a function for informing the result of the additional service processing, A field set with a value to indicate that the text message is an additional service processing message; A field having a value indicating a type of additional service requested through the text message; A field in which a value is set for indicating a result of processing for the requested additional service; A mobile communication terminal equipped with a heterogeneous network supplementary service processing function comprising selected fields among fields in which a value for displaying a state of the supplementary service is set according to a status inquiry of the requested supplementary service. The mobile communication terminal with a heterogeneous network additional service processing function according to claim 10, wherein the first communication network is a CDMA mobile communication network. The mobile communication terminal of claim 10, wherein the second communication network is a GSM mobile communication network. An RF unit which performs radio signal processing of the first communication network or radio signal of the second communication network; A subscriber identity module connection unit for mounting a subscriber identity module storing subscriber information of the first communication network or the second communication network; A memory for storing a menu screen for setting an operation mode and requesting an additional service for a subscriber of a second network; By setting the operation mode to the inbound roaming mode in the first communication network and generating a request text message for requesting an additional additional service selected through a menu screen to the second communication network through an inbound roaming service for the second communication network subscriber. Mobile communication terminal with a heterogeneous network additional service processing function including a control unit for transmitting to the second communication network. The method of claim 19, wherein the control unit, A heterogeneous network addition that displays a response text message transmitted through the inbound roaming service by the second communication network receiving the request text message and performing the operation according to the requested supplementary service as a result of the processing of the supplementary service. A mobile communication terminal equipped with a service processing function. The method according to claim 19, The controller performs the second communication network service for the first communication network subscriber by setting the operation mode to the outbound roaming mode in the second communication network. . The method according to claim 19, And the controller is configured to perform the first communication network service for the first communication network subscriber by setting the operation mode to the first communication network mode in the first communication network.

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