KR101216543B1 - Inbound roaming system and its service method - Google Patents

Abstract

The present invention is to perform a call call connection through the inbound roaming service using a speed dial number, for the purpose of the present invention, when the call call is connected using the speed dial number of the inbound roaming terminal, the call call is connected to the speed dial number of the visited station or processed Unlike the conventional method, when the inbound roaming service system requests the location registration of the inbound roaming terminal, the domestic exchange requests the location registration to the overseas home location register through the gateway device, and is transmitted from the overseas home location register through the gateway device. By transmitting the subscriber profile message to the domestic exchange and storing the inbound subscriber information corresponding to the inbound roaming terminal, the location registration of the inbound roaming terminal is performed, and then the call call connection using the speed dial number is requested from the inbound roaming terminal. If that is, to promote the user and easy to use the inbound roaming service by performing a call connection to a call number corresponding to the abbreviated number by the inbound subscriber information.

Inbound roaming, outbound roaming

Description

Inbound roaming system and its service method {INBOUND ROAMING SYSTEM AND ITS SERVICE METHOD}

The present invention relates to an inbound roaming service system, and more particularly, to an inbound roaming system and a service method thereof suitable for connecting a call through a speed dial number during inbound roaming.

As is well known, a mobile communication terminal has a function of being extended to a multimedia terminal such as a digital camera photographing or an MP3 music file with a built-in camera or memory in addition to a simple voice call function. Due to the enhancement of functions, various additional services using the multimedia functions newly added to the mobile communication terminals are being developed, not only the service of the mobile communication terminal but also the communication service for the voice call.

The mobile communication terminal provides a specific additional service using a short range wireless communication module, for example, Radio Frequency IDentification (RFID), Bluetooth (Bluetooth), Infrared Data Association (IrDA), Zigbee, etc. It provides a function such as listening to MP3 using a headset, a voice call using a wireless microphone, and moreover, various functions using a short range wireless communication module are applied to a mobile communication terminal having a game function and a DMB function.

Meanwhile, an international roaming service is provided using a mobile communication terminal, which is a service provided between countries using the same frequency band (e.g., CDMA, WCDMA, etc.) It is possible to provide communication services in other countries by using a terminal and a telephone number.

The process of providing the international roaming service will now be described. When an international telephone code, a country code, and a telephone number of a called terminal are inputted through a calling terminal, an international roaming call connection request is made to an originating exchange. The home location register requests the location information of the called terminal to the destination location register, the destination location register requests the destination information of the destination terminal to the destination exchange through the gateway device, the destination exchange provides the route information to the originating exchange through the gateway device, The originating terminal requests a call connection to the destination exchange according to the location information of the destination terminal according to the route information, and then performs a call connection connection between the originating terminal and the destination terminal.

However, the international roaming service as described above is a mobile phone service in the foreign country by the inbound roaming (inbound roaming) using the terminal or phone number used in the home country and the terminal or phone number used in Korea by the domestic country. Inbound roaming can be divided into outbound roaming. In the case of inbound roaming, if a voice call service is requested by a speed dial number used in the home country, it is not dialed to the number used in the country. There was a problem that a connection was made by a number or a connection error (defect processing) occurred.

Accordingly, an object of the present invention is to provide an inbound roaming system and a service method for connecting a call to a speed dial number used in a home country when a call service using a speed dial number is requested from an inbound roaming terminal.

In one aspect, the present invention is a system for providing an inbound roaming service using an inbound roaming terminal, transmitting a location registration message according to the location registration of the inbound roaming terminal, performing location registration using the received subscriber profile message When the call call connection according to the speed dial number is requested from the inbound roaming terminal, and the domestic exchange requesting the inbound subscriber information of the inbound roaming terminal, and performs the call call connection to the foreign exchange according to the received inbound subscriber information; Transmitting a location update message corresponding to the transmitted location registration message; transmitting the received subscriber profile message to the domestic exchange; configuring and storing the inbound subscriber information using the subscriber profile message; A gateway device which transmits the inbound subscriber information according to a request from a domestic exchange, performs a call call connection with the domestic exchange and an overseas exchange, and sends the subscriber profile message according to the location update message transmitted from the gateway device; It provides an inbound roaming system comprising an overseas home location register for transmitting to the gateway device.

Advantageously, in the present invention of the above aspect, the domestic exchange determines that the inbound roaming terminal is an inbound roaming terminal so that an O-CSI (Origination call CAMEL Subscription Information) trigger is preprocessed rather than a shortcut number used in the country. It provides an inbound roaming system for requesting the inbound subscriber information to the gateway device.

Preferably, in the present invention of the above aspect, when the inbound subscriber information is requested from the domestic exchange, the gateway device inquires the shortcut number information according to the IMSI (International Mobile Subscriber Identify) of the inbound subscriber information. After confirming that the inbound roaming terminal is the terminal of the speed dial number service subscriber, the terminal of the speed dial number service subscriber provides an inbound roaming system for transmitting the inbound subscriber information to the domestic exchange.

In another aspect, the present invention provides a method for providing an inbound roaming service using an inbound roaming terminal, and if a location registration of the inbound roaming terminal is requested to a domestic exchange, transmitting a location update message to an overseas home location register through a gateway device. Transmitting a subscriber profile message according to the location update message from the overseas home location register to the domestic exchange through the gateway device, performing location registration at the domestic exchange using the subscriber profile message, Storing inbound subscriber information at the gateway device, requesting the stored inbound subscriber information to the gateway device when a call call connection using a speed dial number is requested from the inbound roaming terminal; Extracting the inbound subscriber information from an existing gateway device and transmitting the extracted inbound subscriber information to the domestic exchange, and performing a call call connection using the speed dial number through a gateway device and an overseas exchange according to the inbound subscriber information. Provide a service method.

Preferably, in the present invention of the other aspect, the step of requesting the stored inbound subscriber information to the gateway device, it is determined that the inbound roaming terminal is inbound roaming terminal O-CSI (shortcut number used in the domestic) Origination call CAMEL Subscription Information) provides an inbound roaming service method for requesting the inbound subscriber information to the gateway device so that a trigger is preprocessed.

Preferably, in the present invention of the other aspect, the step of extracting and sending the inbound subscriber information to the domestic exchange, according to the International Mobile Subscriber Identify (IMSI) of the inbound subscriber information when the inbound subscriber information is requested After checking whether the inbound roaming terminal is a terminal of a speed dial number service subscriber by querying the speed dial number information, the inbound roaming service method of transmitting the inbound subscriber information to the domestic exchange when the terminal of the speed dial number service subscriber is provided.

The present invention is different from the conventional method in which a call is connected to a shortcut number of a visiting station or is processed by a call number using a shortcut number of an inbound roaming terminal, when a location registration of the inbound roaming terminal is requested to a domestic exchange, Sends the location update message to the overseas home location register through the gateway device, and sends the subscriber profile message according to the location update message to the domestic exchange through the gateway device, and registers the location at the domestic exchange using the subscriber profile message. After storing the inbound subscriber information in the gateway device, if a call call connection using a speed dial number is requested from the inbound roaming terminal, the stored inbound subscriber information is requested to the gateway device, By extracting the party information and sending it to the domestic exchange, and by performing the call call connection using the speed dial number according to the inbound subscriber information, when the call call connection according to the speed dial number is requested using the inbound roaming terminal, A call call can be made.

In accordance with an aspect of the present invention, when an inbound roaming service system requests a location registration of an inbound roaming terminal, a domestic exchange requests a location registration to an overseas home location register through a gateway device, and a gateway device from an overseas home location register. By transmitting the transmitted subscriber profile message to the domestic exchange and storing the inbound subscriber information corresponding to the inbound roaming terminal, the location registration of the inbound roaming terminal is performed. Then, when a call call connection using a speed dial number is requested from the inbound roaming terminal, The call call connection is performed to the telephone number corresponding to the speed dial number through the inbound subscriber information, and the technical problem can be solved through the technical means.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an inbound roaming system suitable for providing an inbound roaming service using a speed dial number according to a preferred embodiment of the present invention. The inbound roaming terminal 102, the domestic wireless communication network 104, the domestic exchange 106 , A domestic home location register 108, a domestic visitor location register 110, a gateway device 112, an overseas home location register 114, a domestic communication terminal 116, and an overseas exchange 118. Here, the short code means a number for connecting to a customer center (ie, 114, etc.), a voice mail box, an emergency center (ie, a 911 center, etc.), for example, and an inbound roaming terminal. An explanation will be given as an abbreviated number for accessing a customer center, a voice mail box, a special number center, or the like located in the local station of 102.

Referring to FIG. 1, the inbound roaming terminal 102 is a communication terminal inbound roaming to use a terminal or a telephone number used by a foreigner in Korea as a visiting country, through a domestic wireless communication network 104 when inbound roaming. It requests the domestic exchange 106 to register the location, and accordingly, the location registration is completed and the call exchange is established through the domestic wireless communication network 104 using the short code while the subscriber information is stored. )

In addition, the inbound roaming terminal 102 requests the domestic exchange 106 to make a call call connection to the domestic communication terminal 116 via the domestic wireless communication network 104 while the location registration is completed and the inbound subscriber information is stored. A voice call with the domestic communication terminal 116 is performed through the domestic wireless communication network 104 and the domestic exchange 106.

In addition, the domestic wireless communication network 104 serves to ensure mobility of the inbound roaming terminal 102 and the domestic communication terminal 116, and includes a base station and a base station controller, and supports both synchronous and asynchronous. Here, in the case of a synchronous wireless communication network, a base station that receives and transmits wireless communication signals between the inbound roaming terminal 102 and the domestic communication terminal 116 controls a base transceiver station (BTS) and a base station to control the domestic exchange 106. The base station controller performing communication with the base station controller (BSC) becomes an asynchronous wireless communication network, and the base station that receives and transmits the wireless communication signals between the inbound roaming terminal 102 and the domestic communication terminal 116 is a node B. (Node-B), the base station controller which controls the Node B to communicate with the domestic exchange 106 becomes a Radio Network Controller (RNC). Of course, the domestic wireless communication network 104 is not limited thereto, and includes a communication network of all mobile communication systems to be implemented in the future, including a CDMA network, a GSM network other than a W-CDMA network and a fourth generation.

Next, the domestic exchange 106 handles basic and additional service processing, incoming and outgoing call processing of subscribers, location registration procedure and handover procedure processing of inbound roaming terminal 102 and domestic communication terminal 116, and other networks. ASS (Access Switching Subsystem) to perform distributed call processing, INS (Interconnection Network Subsystem) to perform centralized call processing, and CCS (Centralization) to centralize operation and maintenance. Subsystems such as a Central Control Subsystem (LOC) and a Location Registration Subsystem (RLS) for storing and managing information on mobile subscribers.

In addition, when the location exchange request is transmitted from the inbound roaming terminal 102, the domestic exchange 106 transmits a location registration message (for example, a registration notification) to the gateway device 112 according to the location registration request. When a subscriber profile message (eg, insert subscriber data, etc.) is transmitted from the gateway device 112 in response to the location registration message, a subscriber profile response message (eg, insert subscriber data) corresponding to the transmitted subscriber profile message is transmitted. ack etc.) is transmitted to the gateway device 112.

Next, when the domestic exchange 106 transmits a location registration response message (e.g., a registration notification ack, etc.) from the gateway device 112 in response to the transmission of the subscriber profile response message, the domestic home location register 108 and the domestic exchange 106 are transmitted. Completes the location registration of the inbound roaming terminal 102 in conjunction with the visitor location register 110, after which the call call connection to the speed dial number is requested from the inbound roaming terminal 102 through the domestic wireless communication network 104, When inbound subscriber information of roaming terminal 102 is requested to gateway device 112, and inbound subscriber information is transmitted from gateway device 112, such inbound subscriber information (e.g., local information of inbound roaming terminal 102). , A shortcut number information, O-CSI information, etc.) is transmitted to the gateway device 112, and the shortened number of inbound subscriber information In accordance with the information to request a call connection number corresponding to the address number to the gateway device 112. The Here, the shortcut number information may include, for example, a short code length, trigger information when a call is made for the shortcut number length, a telephone number corresponding to the shortcut number, a destination routing address, and the like. have.

Here, the domestic exchange 106 stores and manages information (eg, location registration information, etc.) about the inbound roaming terminal 102 in cooperation with the domestic home location register 108 and the domestic visitor location register 110. When the call request according to the speed dial number is received from the inbound roaming terminal 102, the inbound roaming terminal 102 is determined to be an inbound roaming terminal according to the stored information of the inbound roaming terminal 102, and thus, the O-CSI (Origination call) is used. Inbound subscriber information is requested to the gateway device 112 so that the CAMEL Subscription Information (hereinafter, referred to as "O-CSI") trigger is preprocessed. Here, O-CSI means a parameter transmitted from the gateway device 112 to the domestic exchange 106 at the time of location registration for intelligent network call processing for the outgoing call.

In addition, the domestic home location register 108 receives the location information of the inbound roaming terminal 102 and the domestic communication terminal 116 and performs functions such as registration recognition, registration deletion, and location checking, and the inbound roaming terminal 102. ) And the profile information of the domestic communication terminal 116 is stored. Here, the profile information is MIN (Mobile Identification Number) (hereinafter referred to as "MIM"), ESN (Electronic Serial Number (hereinafter referred to as "ESN"), IMSI (International Mobile Subscriber Identify (hereinafter referred to as "IMSI"), origination Subscribed additional service information such as a number service.

The domestic home location register 108 may include a subscriber information management device that manages a database of additional service information of a subscriber when implemented in a wired communication service. The domestic home location register 108 for the mobile communication service and the subscriber information management device for the wired communication service perform a function of making a database of additional service information of the subscriber.

On the other hand, the domestic visitor location register 110 performs the function of storing the information of the visited subscribers in the area serviced by the domestic exchange 106, the inbound roaming terminal 102 or the domestic communication terminal 116 registered as a location in charge; And subscriber information is taken from the domestic home location register 108 and temporarily stored.

Meanwhile, the gateway device 112 includes a gateway location register (GLR), a signaling transfer point (STP) for interworking a communication service between an arbitrary communication network and another communication network, and the like. In charge of the transmission and reception of various data, when a location registration message is transmitted from the domestic exchange 106, a location update message (e.g., location update, etc.) corresponding to the location registration message is sent to the overseas home location register 114. And receives the subscriber profile message transmitted according to the location update message from the home location register 114 and sends it to the domestic exchange 106.

In addition, when the subscriber profile response message is transmitted from the domestic exchange 106, the gateway device 112 transmits the subscriber profile response message to the overseas home location register 114, and thus from the overseas home location register 114. Receiving the location update response message (for example, location update ack, etc.) and transmitting the location registration response message corresponding to the location update response message to the domestic exchange 106, and at the same time, the local information of the inbound roaming terminal 102; Stores inbound subscriber information including speed dial information, O-CSI information, and the like.

Next, when the gateway device 112 requests a call call connection using the speed dial number from the inbound roaming terminal 102, the corresponding inbound roaming terminal 102 speeds up the number according to the inbound subscriber information request transmitted from the domestic exchange 106. After determining whether the subscriber is a service subscriber, in the case of the subscriber of the speed dial number service, the stored inbound subscriber information is extracted and transmitted to the domestic exchange 106. Accordingly, after receiving the response to receiving inbound subscriber information from the domestic exchange 106, the domestic exchange If a call call connection corresponding to the speed dial number is requested from 106, request this call call connection to the foreign exchange 118. Here, determining whether the inbound roaming terminal 102 is a speed dial number service may be performed by inquiring the speed dial information according to the IMSI of the subscriber corresponding to the inbound roaming terminal 102. Here, when O-CSI information is not included in the subscriber profile message at the time of location registration, the gateway device 112 shortens the O-CSI information about the shortcut number, the telephone number corresponding to the shortcut number, the destination routing address, and the like. The inbound subscriber information including the number information is transmitted to the domestic exchange 106.

In addition, the overseas home location register 114 receives the location information of the overseas terminal located abroad and performs functions such as registration recognition, registration deletion, and location checking, and profile information of the inbound roaming terminal 102 is stored. have. In this case, the profile information means MIN, ESN, IMSI, subscribed additional service information such as caller ID service, etc., and the overseas visitor location register stores the information of the visited subscriber in the area serviced by the foreign exchange. , The overseas terminal and subscriber information registered in the location of the area of charge is taken from the overseas home location register 114 and temporarily stored.

In addition, when the location update message is transmitted from the gateway device 112, the overseas home location register 114 transmits a subscriber profile message including inbound subscriber information corresponding to the inbound roaming terminal 102 to the gateway device 112. .

On the other hand, the communication terminal 116 is a terminal serviced in Korea, and after the location registration of the inbound roaming terminal 102 is completed, a call with the inbound roaming terminal 102 using the domestic wireless communication network 104 and the domestic exchange 106. Make a voice call over the call connection.

The foreign exchange 118 receives the call call connection request corresponding to the speed dial number through the gateway device 112 and performs the call call connection to the customer center, voice mail box, special number center, etc. corresponding to the speed dial number. .

Next, an inbound roaming terminal for requesting location registration during inbound roaming in the inbound roaming system having the above-described configuration and connecting a call to a speed dial number in the state where the location registration is completed will be described.

2 is a block diagram of an inbound roaming terminal suitable for performing a call call connection to a speed dial number after location registration is completed during inbound roaming according to the present invention. The inbound roaming terminal 102 includes a control unit 102a and a key input unit 102b. ), The display unit 102c, the transceiver unit 102d, the storage unit 102e, and the roaming switch unit 102f.

Referring to FIG. 2, the controller 102a controls the overall operation of the inbound roaming terminal 102, and processes and provides video and audio data including a DSP (Digital Signal Processor), from the key input unit 102b. The operation control is performed according to the provided operation signal, and a control signal for displaying various information of the inbound roaming terminal 102 is provided to the display unit 102c, and each of the programs is stored in accordance with a predetermined program stored in the storage unit 102e. And a control signal for transmitting / receiving various data including audio data to the transceiver 102d.

In addition, the controller 102a controls the video data provided from the transceiver 102d to be displayed through the display unit 102c after the digital signal processing, and outputs the audio data through the speaker SPK after the digital signal processing. Perform the function.

Meanwhile, the controller 102a controls the display unit 102c to display a menu screen for setting an inbound roaming communication environment for the inbound roaming terminal 102 when the inbound roaming is performed through the roaming switching unit 102f. When roaming is set, the control unit transmits a location registration request corresponding to inbound roaming through the transceiver 102d. When a shortcut number is input from the key input unit 102b, the call connection request using the shortcut number is transmitted and received (102d). Control to transmit to the domestic wireless communication network 104, and then perform a voice call to a phone number corresponding to the speed dial number using a call call connected through the domestic exchange 106.

The key input unit 102b includes, for example, a keypad, and includes a plurality of numeric keys, and generates an inbound roaming setting request signal in response to selecting a key for setting an inbound roaming communication environment. When providing a speed dial number for the call call connection, the call call request signal using the speed dial number is provided to the control unit 102a.

Next, the display unit 102c displays various types of information (for example, time display, menu screen display, etc.) of the inbound roaming terminal under the control of the control unit 102a, and the operation signal generated from the key input unit 102b and the like. It receives and displays various information signals of the controller 102a and performs a function of displaying a menu screen for inbound roaming setting.

In addition, the transceiver 102d communicates with the domestic wireless communication network 104 through the antenna ANT, separates the transmitted / received signals, filters and amplifies the transmitted signal, and transmits the domestic wireless communication network 104 through the antenna. ), And the received signal received from the domestic wireless communication network 104 through the antenna amplifies and filters the weak signal and transmits the weak signal to the controller 102a.

On the other hand, the storage unit 102e stores a predetermined program for controlling the overall operation of the inbound roaming terminal 102, and the terminal information of the inbound roaming terminal 102 (for example, telephone number, serial number, and memory information). , Subscriber information, etc.) is stored.

In addition, the roaming switching unit 102f stores a roaming selection program for setting an inbound roaming communication environment for the inbound roaming terminal 102, and the roaming program is extracted and provided through the control unit 102a.

Next, when the inbound roaming system requests the location registration of the inbound roaming terminal as described above, the domestic exchange requests the location registration to the overseas home location register through the gateway device, and is transmitted from the overseas home location register through the gateway device. By transmitting the subscriber profile message to the domestic exchange and storing the inbound subscriber information corresponding to the inbound roaming terminal, the location registration of the inbound roaming terminal is performed. Then, when a call call connection using a speed dial number is requested from the inbound roaming terminal, the inbound subscriber The process of performing a call call connection to the telephone number corresponding to the speed dial number through the information is described.

3 is a flowchart illustrating a process of performing location registration during inbound roaming according to an embodiment of the present invention.

Referring to FIG. 3, when inbound roaming of inbound roaming terminal 102, inbound roaming terminal 102 requests location registration to domestic exchange 106 via domestic wireless communication network 104 (step 302).

In addition, the domestic exchange 106 transmits a location registration message (for example, a registration notification, etc.) of the inbound roaming terminal 102 to the gateway device 112 according to the location registration request from the inbound roaming terminal 102 ( Step 304).

Next, the gateway device 112 transmits a location update message (e.g., location update, etc.) corresponding to the location registration message transmitted from the domestic exchange 106 to the overseas home location register 114 (step 306). .

Accordingly, when the location update message is transmitted from the gateway device 112, the overseas home location register 114 receives a subscriber profile message (eg, insert subscriber data) including inbound subscriber information corresponding to the inbound roaming terminal 102. Etc.) to the gateway device 112, and the gateway device 112 transmits this subscriber profile message to the domestic exchange 106 (step 308).

Meanwhile, when the subscriber profile message is transmitted from the gateway device 112, the domestic exchange 106 transmits a corresponding subscriber profile response message (eg, insert subscriber data ack) to the gateway device 112, and the gateway. The device 112 sends the transmitted subscriber profile response message to the overseas home location register 114 (step 310).

When the subscriber profile response message is transmitted from the gateway device 112, the overseas home location register 114 sends a location update response message (for example, location update ack) corresponding to the subscriber profile response message to the gateway device ( 112) (Step 312).

Next, when the location update response message is transmitted from the overseas home location register 114, the gateway device 112 transmits a location registration response message (for example, a registration notification ack, etc.) corresponding to the location update response message. Transmit to step 106 (step 314). Here, when the domestic exchange 106 transmits a location registration response message, it uses the transmitted subscriber profile message for the inbound roaming terminal 102 through the domestic home location register 108 and the domestic visitor location register 110. Location registration is completed.

In addition, the gateway device 112 configures the inbound subscriber information by using the subscriber profile message transmitted according to the location update response message, stores it, and completes the location registration of the inbound roaming terminal 102 (step 316). Here, the inbound subscriber information may include, for example, local station information, shortcut number information, O-CSI information, etc. of the inbound roaming terminal 102, and the shortcut number information may be, for example, a short code length (short code). length), trigger information upon call origination for a shortcut number length, a phone number corresponding to the shortcut number, a destination routing address, and the like.

Accordingly, when registering the location of the inbound roaming terminal, inbound subscriber information may be stored using the subscriber profile message transmitted through the gateway device and the overseas home location register to efficiently register the location of the inbound roaming terminal.

Next, a process of performing a call call connection according to the inbound subscriber information when requesting a call call connection using a speed dial number while inbound roaming stores the inbound subscriber information and completes the location registration will be described.

4 is a flowchart illustrating a process of performing a call call connection using a speed dial number when inbound roaming according to another exemplary embodiment of the present invention.

Referring to FIG. 4, in the inbound roaming terminal 102, when a user inputs a speed dial number using an input unit (not shown), for example, a keypad, the call call connection using the speed dial number is performed accordingly. Request to domestic exchange 106 via step 402. Here, the speed dial number means a number for connecting a customer center, a voice mail box, a special number center, or the like, for example.

In addition, the domestic exchange 106 confirms that the inbound roaming terminal 102 is an inbound roaming terminal in cooperation with the domestic home location register 108 and the domestic visitor location register 110, and then receives inbound subscriber information according to the inbound roaming. Request to gateway device 112 (step 404). Here, in the domestic exchange 106, when there is a call call request according to the speed dial number from the inbound roaming terminal 102, the inbound roaming terminal 102 is confirmed that the inbound roaming terminal, O- than the speed dial number used in the domestic The gateway device 112 requests inbound subscriber information so that the CSI trigger is preprocessed.

Next, the gateway device 112 corresponds to the subscriber's IMSI (i.e., the inbound roaming terminal 102) corresponding to the corresponding inbound roaming terminal 102 in response to a request for inbound subscriber information transmitted from the domestic exchange 106. The inbound roaming terminal 102 checks whether the corresponding inbound roaming terminal 102 is a shortcut number service subscriber in a manner of querying the speed dial number information according to the IMSI according to the inbound subscriber information (step 406).

If the inbound roaming terminal 102 is a shortcut number service subscriber, the gateway device 112 includes the local station information, the shortcut number information, the O-CSI information, etc. of the inbound roaming terminal 102. The inbound subscriber information is extracted and transmitted to the domestic exchange 106 (step 408). Here, when the inbound subscriber information is transmitted, the gateway device 112 does not include the O-CSI information in the subscriber profile message when registering the location, and the gateway device 112 performs the O-CSI information on the shortcut number and the shortcut. The inbound subscriber information including the shortcut number information such as the telephone number corresponding to the number and the destination routing address is transmitted to the domestic exchange 106.

On the other hand, as a result of the check in step 406, if the corresponding inbound roaming terminal 102 is not a shortcut number service subscriber, the corresponding inbound subscriber information is extracted and transmitted to the domestic exchange 106, and the domestic exchange 106 In the above, the call is connected to the domestic telephone number corresponding to the speed dial number or the number processing is performed.

When the inbound roaming information is transmitted from the gateway device 112, the domestic exchange 106 transmits the corresponding inbound subscriber information reception response to the gateway device 112 (step 410).

Next, the domestic exchange 106 requests a call call connection to the gateway device 112 to the telephone number corresponding to the speed dial number according to the received inbound subscriber information, and the gateway device 112 requests such a call call overseas. Request to exchange 118 (step 414).

Subsequently, the overseas exchange 118 performs the call call processing to the customer center, voice mail box, special number center, etc. corresponding to the speed dial number according to the request, and thereby the inbound roaming terminal through the domestic exchange 106 and the gateway device 112. A voice call with 102 is performed (step 414).

For example, if an abbreviated number of 114 is input to the inbound roaming terminal 102, the domestic exchange 106 confirms that the terminal is inbound roaming, and after receiving the corresponding inbound subscriber information from the gateway device 112, the gateway. The device 112 and the foreign exchange 118 can request a call call to the overseas customer center to make a voice call with the overseas customer center. After confirming that the terminal is inbound roaming, and receiving the corresponding inbound subscriber information from the gateway device 112, and requesting a call call to the overseas emergency center through the gateway device 112 and the foreign exchange 118 to the overseas emergency center You can make a voice call with the center.

Therefore, when inbound roaming, when calling for a call call using a speed dial number while storing the inbound subscriber information and completing the location registration, the call call connection is performed by requesting a call call to an overseas exchange according to the inbound subscriber information. Therefore, the voice call corresponding to the speed dial number can be effectively performed.

In the foregoing description, the present invention has been described with reference to preferred embodiments, but the present invention is not necessarily limited thereto. Those skilled in the art will appreciate that the present invention may be modified without departing from the spirit of the present invention. It will be readily appreciated that branch substitutions, modifications and variations are possible.

When inbound roaming using the international roaming service using a mobile terminal, if a call is requested through a speed dial number for accessing a customer service center or voice mail box of the home country, the call is made according to the speed dial number of the visitor, not the speed dial number of the visited country. Since connection can be performed, the user's ease of use of the roaming service can be enhanced, and the increase in the subscription and the use of the roaming service are expected due to the increased convenience.

1 is a block diagram of an inbound roaming service system suitable for providing an inbound roaming service using a shortcut number according to a preferred embodiment of the present invention;

2 is a block diagram of an inbound roaming terminal suitable for performing a call call connection to a speed dial number after location registration is completed when inbound roaming according to the present invention;

3 is a flowchart illustrating a process of performing location registration when inbound roaming according to an embodiment of the present invention;

4 is a flowchart illustrating a process of performing a call call connection using a speed dial number when inbound roaming according to another exemplary embodiment of the present invention.

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

102: inbound roaming terminal 104: domestic wireless communication network

106: domestic exchange 108: domestic home location register

110: domestic visitor location register 112: gateway device

114: overseas home location register 116: domestic communication terminal

118: foreign exchange

Claims (12)

A system for providing an inbound roaming service using an inbound roaming terminal, When the location registration message is transmitted according to the location registration of the inbound roaming terminal, the location registration is performed by using the received subscriber profile message, and when the call call connection according to the speed dial number is requested from the inbound roaming terminal, the inbound roaming terminal A domestic exchange for requesting inbound subscriber information of and performing a call call connection to an overseas exchange according to the received inbound subscriber information; Transmitting a location update message corresponding to the transmitted location registration message, transmitting the received subscriber profile message to the domestic exchange, configuring and storing the inbound subscriber information using the subscriber profile message, and the domestic exchange A gateway device which transmits the inbound subscriber information according to a request from the mobile station, and performs a call call connection with the domestic and foreign exchanges; An overseas home location register that transmits the subscriber profile message to the gateway device in accordance with the location update message sent from the gateway device Inbound roaming system comprising a. The method of claim 1, The domestic exchange determines that the inbound roaming terminal is an inbound roaming terminal, and inbound requesting the inbound subscriber information to the gateway device so that an origination call CAMEL subscription information (O-CSI) trigger is preprocessed rather than a shortcut number used in the country. Roaming system. The method of claim 1, When the inbound subscriber information is requested from the domestic exchange, the gateway device inquires the speed dial information according to the IMSI (International Mobile Subscriber Identify) of the inbound subscriber information, and the inbound roaming terminal is the terminal of the speed dial number service subscriber. An inbound roaming system for transmitting the inbound subscriber information to the domestic exchange. The method according to claim 2 or 3, The abbreviated number is a telephone number for accessing a customer center, an emergency center, or a voice mail box located in the home country of the inbound roaming terminal. The method according to claim 2 or 3, The inbound subscriber information includes local information, abbreviated number information, and O-CSI information. 6. The method of claim 5, And the shortcut number information includes a short code length, trigger information when a call is made for the shortcut number length, a telephone number corresponding to the shortcut number, and a destination routing address. A method for providing an inbound roaming service using an inbound roaming terminal, If a location registration of the inbound roaming terminal is requested to a domestic exchange, sending a location update message to an overseas home location register through a gateway device; Transmitting a subscriber profile message according to the location update message to the domestic exchange from the overseas home location register via the gateway device; Performing location registration at the domestic exchange using the subscriber profile message and storing inbound subscriber information at the gateway device; Requesting the gateway device for the stored inbound subscriber information when a call call connection using a speed dial number is requested from the inbound roaming terminal; Extracting the inbound subscriber information from the gateway device and transmitting the extracted inbound subscriber information to the domestic exchange; Performing a call call connection using the speed dial number through the gateway device and an overseas exchange according to the inbound subscriber information; Inbound roaming service method comprising a. The method of claim 7, wherein The requesting of the stored inbound subscriber information to the gateway device may include determining that the inbound roaming terminal is an inbound roaming terminal so that the O-CSI (Origination call CAMEL Subscription Information) trigger is preprocessed rather than a shortcut number used in the country. An inbound roaming service method that requests the inbound subscriber information from a device. The method of claim 7, wherein Extracting the inbound subscriber information and transmitting the inbound subscriber information to the domestic exchange includes retrieving the shortcut number information according to the IMSI (International Mobile Subscriber Identify) of the inbound subscriber information when the inbound subscriber information is requested. An inbound roaming service method for transmitting the inbound subscriber information to the domestic exchange in the case of the terminal of the shortcut number service subscriber after confirming that the terminal of the number service subscriber is a terminal. 10. The method according to claim 8 or 9, The abbreviated number is an inbound roaming service method, which is a telephone number for accessing a customer center, an emergency center, or a voice mailbox located in the home country of the inbound roaming terminal. 10. The method according to claim 8 or 9, And the inbound subscriber information includes country information, abbreviated number information, and O-CSI information. The method of claim 11, And the shortcut number information includes a short code length, trigger information when a call is made for the shortcut number length, a telephone number corresponding to the shortcut number, and a destination routing address.

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