KR100729928B1 - Method and apparatus for providing roaming service of international call and mobile terminal for the same - Google Patents

Abstract

An international call roaming service supply method, and a mobile communication terminal therefor are provided to allow an originated call to be roamed as an international call even though the call is originated by selecting a domestic telephone number, thus a user can conveniently use a phone book of the terminal used in the country even in case of foreign roaming. Provider information is transmitted to a mobile communication terminal(10), so that the terminal(10) recognizes whether a foreign roaming mode is operated(S302,S303). A type of a receiving number whose call origination is requested from the terminal(10) operating in the foreign roaming mode is checked(S304-S306). If the type of the receiving number refers to an international call, a preset international call recognition number is inserted in front of the receiving number(S307-S310). A call origination request inserted with the recognition number is delivered to a gateway MSC(Mobile Switching Center), so that the international call is processed(S311).

Description

Method and apparatus for providing international call roaming service and a mobile communication terminal for the same {Method and apparatus for providing roaming service of international call and mobile terminal for the same}

The following drawings attached to this specification are illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to

1 is a flowchart illustrating a conventional call connection process performed for a called number stored in a phone book of a mobile communication terminal.

2 is a block diagram of a mobile communication system to which the present invention is applied.

3 is a flowchart illustrating a process of performing an international call roaming service providing method according to a preferred embodiment of the present invention.

4 is a block diagram of an apparatus for providing international call roaming service according to a preferred embodiment of the present invention.

5 is a block diagram of a mobile communication terminal used in the international call roaming service method according to the present invention.

6 is a functional diagram of a mobile communication terminal for performing international call roaming processing according to a preferred embodiment of the present invention.

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

10: mobile communication terminal 400: international call roaming service providing device

41: operator information transmission unit 42: TON confirmation unit

43: international call processing unit 600: international call roaming device

61: overseas roaming mode recognition unit 62: TON confirmation unit

63: called party number conversion unit 64: call origination request unit

The present invention relates to a method and apparatus for providing international call roaming service and a mobile communication terminal therefor, and more particularly, to provide a function for performing a call origination using a phone book of a mobile communication terminal even in an overseas roaming mode. The present invention relates to a method and apparatus for providing international call roaming service and a mobile communication terminal for the same.

Recently, with the rapid increase in mobile communication demand, the demand for global roaming, which allows a single number to be called from anywhere in the world, has increased, and the subscriber identity module (SIM), user identity module (UIM), and global subscriber identification International roaming services using smart cards such as the Universal Subscriber Identity Module (USIM) are being provided.

First, the subscriber identification module (SIM) is a smart card module inserted into a European mobile communication (GSM) terminal for mobile communication network authentication and complies with ISO 7816, and stores non-volatile data (telephone number, subscriber's wireless communication service provider). , Personal phonebooks, etc.) and limited cryptographic functions and software execution. In addition, a SIM card using a subscriber identity module (SIM) includes a phone number, a personal security key, and data necessary for operation of a mobile communication terminal. When the card is installed in a new mobile communication terminal, the call can be made to the new mobile communication terminal. The subscriber identity module (SIM) card is currently being developed as a core platform for implementing future revenue-based data services centered on European wireless communication service providers based on GSM.

In contrast, the User Identity Module (UIM) is a smart card module that conforms to ISO 7816. It is inserted into the multiple mode of Code Division Multiple Access (CDMA) and European wireless communication (GSM) terminals, and is a European wireless communication (GSM) network. Roaming is possible at. A user identification module (UIM) card using a user identification module (UIM) is a type of CDMA Subscriber Identity Module (SIM) card.

The Universal Subscriber Identity Module (USIM) is also a smart card module that conforms to ISO 7816. It is inserted into the 3rd generation wireless communication terminal to provide network authentication and additional functions. It provides a minimum of 64KB EEPROM (Electrically Erasable Programmable Read Only Memory). It is standardized for mounting.

On the other hand, in order to make an international call from a mobile communication terminal, enter an international call identification number or an international call identification number (for example, 001, 002, 00345, etc.) at the beginning of the telephone number, and then dial the country code and the telephone number except 0. You must enter them in order. If the user does not know the international call recognition number or wants to use the international call recognition number provided by the mobile communication provider by default, the user may request the international call by inputting a "+" sign at the beginning of the telephone number. In a typical GSM terminal, the "+" symbol is displayed on the screen when "*" is continuously input or "0" is long.

The same applies to the use of the phone book stored in the memory of the mobile communication terminal or the memory of the smart card modules (SIM, UIM, USIM). That is, if you do not enter "+" at the beginning of the phone number when you store the phone number in the phone book, the number type (TON: Type Of Number) is stored as "Unknown", and if you enter "+", the number type (TON) This is stored as "International". Then, the mobile communication network can determine whether or not it is an international call from the number type (TON) of the called number.

Figure 1 shows a conventional call connection process performed for the called number in the phone book of the mobile communication terminal.

Referring to FIG. 1, when a user searches for a phone number stored in a memory or a USIM of a mobile communication terminal (S101) and attempts to call a phone number of a specific called subscriber (S102), a type of called number is determined by the switching center (MSC). TON: Type Of Number) is checked (S103). If "Unknown", the called number is translated and the call is processed (S107). If it is "International", the Country Code (CC) is the country code. It is determined whether or not (S104). As a result of determination, if it is not the own country code, the international PFX set in the exchange office is inserted before the called party number, and the called party number is translated to process the call (international call) (S105, S107). CC) and removing the "0" is inserted and the called number is translated to process the call (domestic call) (S106, S107).

However, such a conventional method often fails to process a call using a phone book when the mobile communication terminal used in Korea roams abroad. That is, although the domestic phone numbers stored in the phone book should be treated as international calls in overseas roaming mode, the phone numbers stored in the phone book are stored in the phone book when roaming overseas because most of the TON of domestic phone numbers are set to "Unknown". There is a problem that you can not make a call using the number as it is.

The present invention has been made in consideration of the above, and when the incoming number selected in the phone book of the mobile communication terminal in the overseas roaming mode is the telephone number of the home network, it can be automatically converted to an international call to perform international call processing An object of the present invention is to provide a method and apparatus for providing a call roaming service and a mobile communication terminal for the same.

International call roaming service providing method according to a preferred embodiment of the present invention for achieving the above object, by transmitting the operator information to the mobile communication terminal to allow the mobile communication terminal to recognize whether the overseas roaming mode operation; ; Checking the type (TON) of the called number requested from the mobile communication terminal operating in the overseas roaming mode; Inserting a preset international telephone identification number before the called number if the called number is identified as an international call; And forwarding the call origination request with the international phone identification number to a corresponding gateway MSC to perform international call processing. The called number requested from the mobile communication terminal includes the call forwarding request. When the incoming call number selected in the phone book is a phone number of the home network, the mobile communication terminal converts the international call number using the home country code previously stored in the storage unit such as USIM, It is characterized in that the type is changed to an international call.

According to another aspect of the present invention, an apparatus for providing international call roaming service for a phone number in a phone book of a mobile communication terminal, and transmits service provider information to the mobile communication terminal to allow the mobile communication terminal to operate in an overseas roaming mode. Operator information transmission unit for recognizing; A TON checking unit for checking a type (TON) of a called number requested from the mobile communication terminal operating in an overseas roaming mode; And if the type of the called number confirmed by the TON check unit is an international call, inserts a preset international telephone identification number before the called number, forwards the call origination request to the gateway MSC, and performs international call processing. An incoming call number requested from the mobile communication terminal is stored in the mobile communication terminal as the incoming call number selected from the phone book is a telephone number of a home network. An apparatus for providing international call roaming services, characterized in that a home country code is converted to an international call number, and the type of the converted called number is changed to an international call.

According to another aspect of the present invention, a method for roaming a mobile communication terminal for providing an international call roaming service for a phone number stored in a phone book stored in a storage unit of a mobile communication terminal, the method comprising: (a) received from a mobile communication network side; Determining whether the overseas roaming mode is compared by comparing the operator information and the operator information previously stored in the storage unit; (b) checking the type (TON) of the called number requested to call according to the user's phonebook search while operating in the overseas roaming mode; (c) when the type of the called number is confirmed as a telephone number of the home network, converting the called number into an international call number using the home country code previously stored in the storage unit, and converting the type of the called number into an international call. Changing; And (d) requesting a call origination by the called number converted into the international call. The roaming processing method of a mobile communication terminal is provided.

The storage unit of the mobile communication terminal may correspond to a smart card mounted on the mobile communication terminal for mobile communication network authentication.

The smart card is preferably any one selected from a subscriber identification module (SIM), a user identification module (UIM), and a global subscriber identity module (USIM).

In the step (c), it is preferable to insert the home country code in front of the called number, and delete the unnecessary "0" included in the called number to convert it to an international call number.

According to still another aspect of the present invention, a mobile communication terminal for providing an international call roaming service for a phone number contained in a phone book, comprising: a business unit, a home country code, and a storage unit in which the phone book is stored; An overseas roaming mode recognizing unit configured to determine whether an overseas roaming mode is compared by comparing service provider information received from a mobile communication network with service information previously stored in the storage unit; In the state of operating in the overseas roaming mode, a TON confirmation unit for confirming the type (TON) of the called number of the call origination request according to the user's phone book search; When the type of the called number is confirmed by the telephone number of the home network by the TON checking unit, the called number is converted into an international call number by using the home country code previously stored in the storage unit, and the called number type Called number conversion unit for changing the international call; And a call origination request unit requesting a call origination to the called number converted into the international call.

According to still another aspect of the present invention, in a recording medium mounted on a mobile communication terminal for providing an international call roaming service for a phone number contained in a phone book, the carrier information received from the mobile communication network and the storage unit The procedure of determining whether the overseas roaming mode is compared by comparing the previously stored operator information, and in the state of operating in the international roaming mode, checking the type (TON) of the called number requested to call according to the user's phonebook search. If the procedure and the type of the called number are confirmed to be the telephone number of the home network, the called number is converted into an international call number using the home country code previously stored in the storage unit, and the type of the called number is converted into an international call. A program that records the program for executing the procedure for changing the call and requesting the call to the called party number converted to the international call. The teoro readable medium is provided.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

2 is a schematic structural diagram of a mobile communication system to which the present invention is applied.

2, a mobile communication system to which the present invention is applied includes a gateway MSC 11, an MSC 12, a home location register 13, a visitor location register VLR ( 14), a base station controller (BSC) 15 and a base station (BTS) 16. The mobile communication system is preferably a communication system of a wideband code division multiple access (WCDMA) network suitable for international roaming, but the present invention is not limited thereto.

The gateway switching center 11 performs an efficient network interworking function with a public telephone network (PSTN), a Thai Dong operator network or an international telephone operator network.

A mobile switching center (MSC) 12 provides an interface function with a base station controller (BSC) 15, and exchanges mobile subscribers with mobile subscribers and fixed network subscribers such as PSTNs and ISDNs. Interworking function). To this end, the MSC 12 provides a function of exchanging information with an HLR (Home Location Register) and a VLR (Visitor Location Register) storing subscriber information.

In addition, the switching center 12 includes an international call roaming service providing apparatus 400 for international call roaming of the mobile communication terminal (eg, WCDMA terminal) 10. The international call roaming service providing apparatus 400 transmits operator information to the mobile communication terminal 10 to operate in an overseas roaming mode, and uses a phone book from the mobile communication terminal 10 operating in an overseas roaming mode. When a call origination request is requested, a predetermined international telephone identification number is inserted in front of the called party number according to the type of called party requesting number (TON: Type Of Number, TON = INT), and the corresponding gateway MSC ( 11) forwards the call origination request.

At this time, the called number received from the mobile communication terminal 10 is a number changed by the mobile communication terminal 10, and the mobile communication terminal 10 operating in the overseas roaming mode is stored in the phone book by the user from the home network. When a call is requested to a number (domestic phone number), the home country code stored in the USIM is inserted before the called number, the first "0" of the called number is deleted, and then the type (TON) of the called number is entered. The number converted to an international call.

More detailed configurations of the international call roaming service providing apparatus 400 and the mobile communication terminal 10 will be described later with reference to FIGS. 4 and 5.

The Home Location Register (HLR) 13 is a database that manages the subscriber's information, and has a structure that enables complete fault tolerance and real-time DB processing, and performs the routing function of the called subscriber.

A base station controller (BSC) 15 performs functions such as matching with a base station (BTS) 16, inter-cell handover processing, call control, and the like. Two base station (BTS) 16 is controlled.

The base station transceiver system (BTS) 16 transmits and receives radio signals, system synchronization (GPS), wireless channel encoding and decoding, signal strength and quality measurement (uplink), baseband signal processing, diversity, and radio resource management. And self-maintenance functions.

3 illustrates a process of performing an international call roaming service providing method according to a preferred embodiment of the present invention.

First, when the mobile communication terminal 10 receives the operator information from the MSC 12 (S301), the received operator information and the operator information previously stored in the smart card (SIM, UIM, USIM) are compared with each other. (S302).

If the comparison result (S302), the operator information received from the switching center (MSC) 12 and the operator information previously stored in the smart card (SIM, UIM, USIM) is the same, the operation according to the general call processing procedure (not shown) If it is not the same as each other, it is recognized as an overseas roaming mode (S303).

Subsequently, a procedure for checking the type (TON) of the call origination request requested by the user according to the phone book search in the overseas roaming mode is performed (S304, S305, S306).

As a result, if the called number type (TON) is an international call (TON = INT), the call is requested to the selected called number, and if the called number type (TON) is not an international call (TON = INT) (that is, If the phone number of the home network), the home country code previously stored in the smart card (SIM, UIM, USIM) is inserted in front of the called party number, the first "0" of the called party number is deleted, and the called party type (TON ) Is changed to an international call (S307). Then, the call is requested to the changed destination number (S308).

Then, the MSC 12 receiving the call origination from the mobile communication terminal 10 checks whether the type (TON) of the called number is an international call (TON = INT) (S309). If the call is directly connected to the international call, the predetermined international call recognition number is inserted before the called number (S310), and the call forwarding request is transmitted to the gateway exchange (MSC) for processing the international call (S311).

4 is a block diagram of an apparatus for providing international call roaming service according to a preferred embodiment of the present invention.

As shown in Figure 4, the international call roaming service providing apparatus 400 according to a preferred embodiment of the present invention, the operator information transmission unit 41, TON confirmation unit 42, and the international call processing unit 43 Include.

The operator information transmitter 41 transmits network operator information to the mobile communication terminal 10 so that the mobile communication terminal 10 can recognize whether the overseas roaming mode is operating.

When the TON check unit 42 receives a call origination request from the mobile communication terminal 10 operating in the overseas roaming mode, the TON checker 42 checks the type (TON) of the called party requesting the call.

The international call processor 43 inserts a preset international telephone identification number before the called number if the type of the called number confirmed by the TON confirming unit 42 is an international call (TON = INT), and then the corresponding gateway exchange station 11 An international call is made by sending a call origination request.

In this case, the called number received from the mobile communication terminal 10 is a number roamed by an international call by the mobile communication terminal 10, and the mobile communication terminal 10 operating in an overseas roaming mode is searched by the home directory by searching the phone book. When the call is requested to the phone number of, the home country code stored in the USIM is inserted in front of the called number, the first "0" of the called number is deleted, and then the type (TON) of the called number is changed to an international call. It is the number set by.

5 is a block diagram of a mobile communication terminal used in the international call roaming service method according to the present invention.

5, a mobile communication terminal 10 provided according to a preferred embodiment of the present invention is a wireless transmitting and receiving device 51, a central processing unit (MSM) 52, a codec (CODEC) 53, a storage device 54, a voice output device (speaker) 55, a display device (LCD) 56, an input device (keypad) 57, a voice input device (microphone) 58, and a smart card 50 are included. .

The wireless transmitting and receiving device 51 transmits and receives a signal wirelessly with a base station through an antenna, so that a signal transmitted through the wireless transmitting and receiving device 51 is transmitted to the other party's wired / wireless terminal through the base station and the mobile communication network.

The smart card 50 is a module installed in the mobile communication terminal 10 for mobile communication network authentication, and stores data such as mobile communication service provider information, home country code, and phone book to which the mobile communication terminal 10 is subscribed. have.

The smart card 50 may include a subscriber identity module (SIM), a user identity module (UIM), a universal subscriber identity module (USIM), and the like.

The codec 53 processes a signal received from the wireless transmitting and receiving device 51 under the control of the central processing unit 52 and outputs the signal to the voice output device (speaker) 55, and the voice input device (microphone). After processing the voice signal transmitted from 58 to the central processing unit 52 to be transmitted through the wireless transmission and reception device (51).

The voice output device (speaker) 55 outputs the voice received from the codec 53, receives the voice from the voice input device 58, and transmits the voice to the codec 53.

The input device (keypad) 57 receives a menu selection signal, a receiving telephone number, and the like through a button.

The display device (LCD) 56 outputs a screen according to the control of the central processing unit 52.

The storage device 54 stores a mobile communication terminal file system (image, character, icon), address book, short message, picture, music file, video file, and the like.

The central processing unit (MSM) 52 drives and controls the mobile communication terminal 10, recognizes the overseas roaming mode according to the operator information received from the mobile communication network side, and searches the phone book while operating in the overseas roaming mode. If the type of the called party (TON) requested for call origination is the telephone number (domestic phone number) of the home network, change the called number and the type of the called number (TON) to an international call, and then go to the mobile communication network side (exchange station). International call roaming apparatus 600 for requesting call origination.

Here, the international call roaming device 600, as shown in Figure 6, the operator information received from the mobile communication network side switching center (MSC) (12) and the carrier information previously stored in the smart card (SIM, UIM, USIM) Comparing with each other, overseas roaming mode recognition unit 61 for recognizing that the overseas roaming mode, in the state of operating in the international roaming mode to check the type (TON) of the called number according to the call origination request by the phone book search TON check unit 62, the type of the called number (TON) confirmed by the TON check unit 62 is the telephone number (domestic phone number) of the home network, the smart card (SIM, UIM, USIM) in front of the called number Insert the stored home country code in front of the called party number, delete the first "0" of the called party number, convert the called party number to the international number, and then convert the called party number to change the type of the called number (TON) to the international number. 63 and converted to the international call And a call origination request unit 64 for requesting a call origination with the called number.

According to the present invention, the mobile communication terminal 10 and the international call roaming service providing apparatus 400 may be equipped with a recording medium (RAM, ROM, etc.) recording a program capable of performing the above-described procedure.

Although the present invention has been described above by means of limited embodiments and drawings, the present invention is not limited thereto and will be described below by the person skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the claims.

According to the present invention, even when roaming overseas of the mobile communication terminal selects the telephone number (home phone number) of the home network stored in the phone book, even if the call is roamed to the international call by the mobile communication terminal and the mobile network side, domestic There is an advantage that the phone book of the mobile communication terminal used at can be conveniently used when roaming abroad.

Claims (12)

A method for providing international call roaming service for a phone number in a phone book of a mobile communication terminal, Transmitting operator information to the mobile communication terminal so that the mobile communication terminal can recognize whether the overseas roaming mode is operating; Checking the type (TON) of the called number requested from the mobile communication terminal operating in the overseas roaming mode; Inserting a preset international telephone identification number before the called number if the called number is identified as an international call; And And forwarding the call origination request inserted with the international phone identification number to a corresponding gateway MSC to perform international call processing. Called number requested from the mobile communication terminal, When the incoming call number selected in the phone book is a phone number of the home network, the mobile communication terminal converts the international call number using a pre-stored home country code, and converts the converted call number type into an international call. Method for providing international call roaming service, characterized in that changed. An apparatus for providing international call roaming service for a phone number in a phone book of a mobile communication terminal, A provider information transmitter to transmit the operator information to the mobile communication terminal so that the mobile communication terminal can recognize whether the overseas roaming mode is operating; A TON checking unit for checking a type (TON) of a called number requested from the mobile communication terminal operating in an overseas roaming mode; And If the type of the called number confirmed by the TON check unit is an international call, a preset international telephone identification number is inserted before the called number, and then the call is sent to the gateway MSC to allow international call processing. Including; international call processing unit; Called number requested from the mobile communication terminal, When the incoming call number selected in the phone book is a phone number of the home network, the mobile communication terminal converts the international call number using a pre-stored home country code, and converts the converted call number type into an international call. International call roaming service providing device, characterized in that the modification. A roaming processing method of a mobile communication terminal for providing an international call roaming service for a phone number stored in a phone book stored in a storage unit of a mobile communication terminal, (a) comparing the service provider information received from the mobile communication network side with the service provider information stored in the storage unit to determine whether the overseas roaming mode; (b) checking the type (TON) of the called number requested to call according to the user's phonebook search while operating in the overseas roaming mode; (c) when the type of the called number is confirmed as a telephone number of the home network, converting the called number into an international call number using the home country code previously stored in the storage unit, and converting the type of the called number into an international call. Changing; And (d) requesting a call origination to the called number converted into the international call; and a roaming processing method of a mobile communication terminal. The method of claim 3, And the storage unit of the mobile communication terminal is a smart card mounted on the mobile communication terminal for mobile communication network authentication. The method of claim 4, wherein The smart card, Roaming processing method of a mobile communication terminal, characterized in that any one selected from a subscriber identification module (SIM), a user identification module (UIM) and a global subscriber identity module (USIM). The method of claim 3, wherein in step (c), And inserting the home country code in front of the called number, deleting unnecessary "0" s included in the called number, and converting it into an international call number. The method according to any one of claims 3 to 6, The mobile communication network is a roaming processing method of a mobile communication terminal, characterized in that the WCDMA network. A mobile communication terminal for providing international call roaming service for a phone number contained in a phone book, A storage unit in which information on a service provider, a home country code, and the phone book to which a mobile communication terminal is subscribed are stored; An overseas roaming mode recognizing unit configured to determine whether an overseas roaming mode is compared by comparing service provider information received from a mobile communication network with service information previously stored in the storage unit; In the state of operating in the overseas roaming mode, a TON confirmation unit for confirming the type (TON) of the called number of the call origination request according to the user's phone book search; When the type of the called number is confirmed by the telephone number of the home network by the TON checking unit, the called number is converted into an international call number by using the home country code previously stored in the storage unit, and the called number type Called number conversion unit for changing the international call; And And a call origination request unit requesting a call origination to the called number converted into the international call. The method of claim 8, The storage unit is a mobile communication terminal, characterized in that the smart card mounted for mobile communication network authentication. The method of claim 9, The smart card, A mobile communication terminal, characterized in that any one selected from a subscriber identification module (SIM), a user identification module (UIM) and a global subscriber identity module (USIM). The method of claim 8, wherein the called number conversion unit, And inserting the home country code in front of the called number and deleting the unnecessary "0" included in the called number to convert the called number into an international call number. In the recording medium mounted on the mobile communication terminal for providing international call roaming service for the phone number contained in the phone book, Comparing the service provider information received from the mobile communication network with the service provider information previously stored in the storage unit and determining whether to be in an overseas roaming mode; In the state of operating in the overseas roaming mode, the procedure of checking the type (TON) of the called number requested to call according to the user's phone book search; If the type of the called number is confirmed as a telephone number of a home network, a procedure for converting the called number into an international call number using a home country code previously stored in a storage unit, and changing the type of the called number into an international call. Wow, A computer-readable recording medium having recorded thereon a program capable of executing a method for providing an international call roaming service, including a procedure for requesting a call originating to a called number converted into an international call.

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