KR100932248B1 - Roaming supplementary service provision system for inbound roaming service subscriber and method of providing the same - Google Patents

Abstract

Disclosed are a roaming supplementary service providing system and a method for providing the same to an inbound roaming service subscriber. The roaming supplementary service providing method for an inbound roaming service subscriber according to the present invention is provided to a subscriber of a prepaid service and a roaming supplementary service when an inbound roaming service subscriber subscribed to a roaming supplementary service of a home network. Generating a database; receiving and storing information about a prepaid service of a subscriber of a roaming supplementary service from an overseas network; and when the roaming supplementary service is executed in a home network, charging information for the roaming supplementary service is transferred to an overseas network. Characterized in that the transmission to be deducted in real time by the prepaid service.

Inbound roaming, primary no., Secondary no., Prepay

Description

Additional service providing system for inbound roaming service subscriber and method for providing same

The present invention relates to a roaming supplementary service providing system and method for an inbound roaming service subscriber, and more particularly, to a roaming supplementary service in a home network to an inbound roaming service subscriber subscribed to a prepaid service in an overseas network. The present invention relates to a roaming supplementary service providing system and a method for an inbound roaming service subscriber capable of subtracting charges from a prepaid amount of an overseas network in real time.

Today, according to the overseas roaming service, mobile subscribers such as domestic wideband code division multiple access (WCDMA) access the domestic home network in a foreign country using the same mobile communication terminal, and various mobile communication services such as voice or video calls. Services, download / upload services for multimedia data, and wireless Internet services have become available.

In general, when a foreign roaming service subscriber accesses a domestic home network from a foreign country, the number excluding international call access number (1) + country code (82) + area code (010, 019, 02, 041, etc.) except 0 + Phone number (****-####) 'and then press the call button to use the call or messaging services. Alternatively, a "+" KEY may be used as an international telephone access number in a global system for mobile telecommunication (GSM) / WCDMA network. That is, "+" + "country code" + "called party number except 0" should be entered. In addition, when a foreign roaming service subscriber accesses a foreign country's network from a foreign country, the user can use a call or a messaging service by pressing a 'region code + phone number' and then pressing a call button as in the domestic network service.

As such, when accessing a home network from an overseas network, the MSC (Mobile Switching Center) of the overseas network basically analyzes the called number, and the ISUP (ISDN User Part) is sent to the home network via the international circuit provider network of the overseas network. It is pulled in. When a call enters the ISUP to the home network, the MSC of the home network receives a routing number by querying the Mobile Location Part (MAP) to the Home Location Register (HLR), which manages the subscriber location of the called party number, and receives the routing number. The call is connected by ISUP processing back to the destination MSC.

On the contrary, in case of accessing the overseas network from the home network, the MSC of the home network analyzes the called number, and the ISUP call is introduced into the overseas network via the international network of the home network.

In general, the subscriber's mobile terminal number is an IMSI (International Mobile Subscriber Identity) number managed by a USIM (Universal®Subscriber®Identity®Module) card installed in the mobile terminal and the MSISDN (Mobile) assigned to the subscriber terminal in the home network corresponding thereto. It is a unique identification number unique to each subscriber's mobile terminal by a Subscriber Integrated Service Digital Network number.

In particular, the GSM / WCDMA mobile communication terminal can support multi-band (automatic roaming) is possible. A service for applying automatic roaming by assigning a plurality of MSISDN numbers to a single IMSI by using the characteristics of the mobile communication terminal of the GSM / WCDMA system has been developed, and the SIMN (Single IMSI Multiple Number) is one such service. .

That is, the SIMN service assigns a primary number in the home network in response to the IMSI of the subscriber mobile communication terminal, and assigns a secondary number in the partner network with a certain contractual relationship to apply to automatic roaming. do.

However, when a roamer uses a roaming service, the roamer is charged with a roaming charge that is different from the general charge in the home network. The roaming billing system is more expensive than the general billing system in the home network. Therefore, the roamer needs to pay a certain amount of prepaid amount and limit the roaming service to be available within the cost. In particular, when a roamer who subscribes to a prepaid service in an overseas network receives inbound roaming service in the home network, the billing processing method for the roaming supplementary service in the home network additionally provided to the roamer needs to be clearly preempted. have.

The present invention was devised to meet the above necessity, and provides an inbound roaming service subscriber who has subscribed to a prepaid service in an overseas network, and provides a roaming additional service in a home network, and charges the real time at the prepaid amount of the overseas network. It is an object of the present invention to provide a roaming supplementary service provision system and method for inbound roaming service subscribers that can be subtracted.

In the roaming additional service providing system for an inbound roaming service subscriber according to the present invention for achieving the above object, when a subscriber of an inbound roaming service subscribed to a prepaid service of an overseas network subscribes to a roaming additional service of a home network, A database generation unit generating a database for a subscriber of a roaming supplementary service; A roaming additional service execution unit that registers and stores information on the prepaid service of a subscriber of the roaming additional service, and executes a roaming additional service of the home network; And a mobile communication exchange unit for transmitting billing information to the overseas network so that the charge for the roaming additional service executed by the roaming additional service execution unit is deducted in real time by the prepaid service of the foreign network. .

In addition, the roaming additional service providing method for the inbound roaming service subscribers according to the present invention for achieving the above object, when the inbound roaming service subscribers who subscribe to the prepaid service of the overseas network subscribed to the roaming additional service of the home network, Creating a database of subscribers of the prepaid service and the roaming supplementary service; Receiving and storing information on the prepaid service of a subscriber of the roaming supplementary service from the foreign network; And when the roaming supplementary service is executed in the home network, the billing information for the roaming supplementary service is transmitted to the foreign network to be deducted in real time by the prepaid service.

Preferably, the method for providing a roaming supplementary service to an inbound roaming service subscriber further includes registering information about a subscriber of the roaming supplementary service to a roaming supplementary service execution unit, and a database generator generates the roaming supplementary service. The database is generated based on the information on the subscriber of the roaming supplementary service registered in the execution unit.

The roaming supplementary service providing method for the inbound roaming service subscriber may include a database generation unit obtaining a subscriber profile from a subscriber registration unit of the foreign network based on a paging signal of the inbound roaming service subscriber and subscribing to the roaming supplementary service. Determining whether or not; Transmitting, by the database generator, the subscriber profile to a GPRS service support unit / mobile communication exchange unit when determined to be a subscriber of the roaming supplementary service; And receiving, by the database generation unit, a response message from the GPRS service support unit / mobile communication exchange unit. In this case, the roaming additional service execution unit is preferably implemented to update the subscriber location information based on the response message from the GPRS service support unit / mobile communication exchange.

Here, when it is determined that the roaming additional service is a subscriber, the database generator changes the original intelligent network information message corresponding to the prepaid service received from the foreign network into a target intelligent network information message and replaces the information subscribed to the roaming additional service. It is desirable to assign the original intelligent network information and transmit it to the mobile communication exchange unit.

The roaming supplementary service providing method for the inbound roaming service subscriber may include a database generation unit obtaining a subscriber profile from the HLR of the foreign network based on a location update request signal from a GPRS service support unit / mobile communication exchange unit. Determining whether to subscribe to the roaming additional service; If it is determined that the roaming supplementary service is a subscriber, transmitting the subscriber profile to the mobile communication switch by the database generator; And receiving, by the database generation unit, a response message from the mobile communication exchange unit. In this case, it is preferable that the roaming additional service execution unit updates the subscriber location information based on the response message from the mobile communication exchange unit.

Preferably, the roaming supplementary service providing method for the inbound roaming service subscriber, the mobile communication switching unit to the original intelligent network information of the roaming supplementary service based on the roaming supplementary service request signal transmitted from the subscriber of the roaming supplementary service Interlocking the roaming additional service execution unit according to the execution; And the roaming supplementary service execution unit executing logic of the roaming supplementary service.

Here, when the subscriber of the roaming additional service is a subscriber of the prepaid service of the foreign network, it is preferable that the roaming additional service execution unit attaches a code corresponding to the prepaid service to the called party number to proceed with call processing.

Preferably, the roaming additional service providing method for the inbound roaming service subscriber, the mobile communication switching unit to the roaming service control unit of the foreign network so that the roaming service control unit of the foreign network is interlocked according to the code corresponding to the prepaid service. The method may further include transmitting a driving request message.

In addition, the inbound roaming service subscriber is preferably configured to receive a primary number in the foreign network and a secondary number in the home network.

According to the present invention, a roamer who pays a prepaid amount in an overseas network or sets a predetermined billing limit amount is processed only within a range of a prepaid amount or a predetermined amount even when receiving a roaming supplementary service in a home network. The roaming supplementary service can prevent a lot of charges from being unknowingly charged.

Hereinafter, a roaming additional service providing system and a method thereof for an inbound roaming service subscriber according to the present invention will be described in detail with reference to the accompanying drawings.

Prior to the detailed description of the present invention, the mobile communication terminal in the present invention is a cellular phone, a PCS (Personal Communications Services phone), a synchronous / asynchronous IMT-2000 (International Mobile Telecommunication-2000) terminal. Notebook PCs, desktop PCs, Palm Personal Computers, PDAs, Personal Digital Assistants, Smart Phones, WAP phones It includes all communication devices such as wireless application protocol phones and mobile play-stations.

1 is a block diagram schematically illustrating a roaming supplementary service providing system for an inbound roaming service subscriber according to an embodiment of the present invention.

Referring to the drawings, the voice call charging processing system according to the present invention includes a home network 100 and an overseas network 200. In particular, a network that differentiates itself from other foreign third-party networks by assigning a primary number and a secondary number corresponding to one IMSI in agreement with the home network 100 among foreign networks, respectively. Although referred to as a partner network, the present invention includes such a partner network as well as a general third party network. That is, the SIMN service assigns two MSISDN numbers corresponding to one IMSI. At this time, the MSISDN number assigned from the home network 100 is distinguished from other third party networks by using a primary number. Here, the home network 100 may include a Customer Care Billing System (CCBS) 110, a Roaming Service Control Point (RSCP) (herein referred to as a roaming supplementary service execution unit) 120, and a Gateway Location Register (GLR) (here, a database). (Also referred to as a generator) 130, a Serving GPRS Support Node (SGSN) (also referred to herein as a GPRS service support) 140, an MSC (also referred to as a mobile communication exchange) 150, and a GMSC (Gateway) Mobile Switching Center) 160.

In addition, overseas network 200 is CCBS (210), Home Location Register (HLR) (here also referred to as subscriber register) 220, and SCP (Service Control Point) (here also referred to as roaming service control unit) ( 230).

CCBS (110, 210) is to manage the billing data generated in the home network 100 and the overseas network 200, the CCBS 110 of the home network 100 from the CCBS 210 of the overseas network 200 Receives and manages billing data generated from overseas network 200.

In particular, the CCBS 110 of the home network 100 manages the charging of the roaming additional service when the mobile communication subscriber of the overseas network 200 receives the inbound roaming service and the roaming additional service in the home network 100. . Here, the roaming additional service is an inbound roaming service that connects an outgoing or incoming signal between the home network 100 and the overseas network 200 to a mobile communication subscriber of the overseas network 100 in the home network 100. In addition, it refers to a service that connects an incoming or outgoing signal in the home network 100 to other inbound roaming service subscribers.

In addition, when the mobile subscriber of the overseas network 200 subscribes to a prepaid service, the CCBS 210 of the overseas network 200 deducts the charges for the amount prepaid or pre-set by the mobile subscriber. Manage. Here, the prepaid amount refers to the amount paid in advance by the mobile communication subscriber as the limit of the billing for the service, and the preset amount is the billing amount for the service to set the limit that the mobile subscriber can postpay. Say one amount.

When the overseas network 200 is a partner network, the CCBS 110 of the home network 100 and the CCBS 210 of the overseas network 200 are the SIMN subscriber's overseas network 200 for billing processing in the inbound overseas roaming service. It is preferable to exchange and register information on the MSISDN range of the major number in the and the MSISDN range of the minor number in the home network 100.

RSCP 120 is an intelligent network equipment that controls overseas roaming services. When a mobile communication subscriber of an overseas network 200 is in the home network 100, the subscriber's prepaid service and roaming service are added based on a paging signal from the subscriber. Update the information about the service.

In addition, when the mobile communication subscriber of the overseas network 200 requests the roaming additional service from the home network 100, the RSCP 120 performs logic of the corresponding roaming additional service. Here, the logic of the roaming supplementary service is to execute the roaming supplementary service and calculate the billing of the roaming supplementary service, and the billing of the roaming supplementary service is prepaid or pre-set by the mobile communication subscriber of the overseas network 200. The MSC 150 is controlled to be deducted from the amount in real time, and refers to the logic of balance monitoring and billing calculation that is performed to charge the roaming additional service in the remaining amount.

The GLR 130 is also called a gateway location register, and performs the function of the HLR with respect to the partner network. In addition, when the subscriber of the inbound roaming service subscribed to the prepaid service of the overseas network 200 subscribes to the roaming additional service of the home network 100, the GLR 130 generates a database of the subscriber of the roaming additional service.

SGSN 140, also known as a packet switching support node, is responsible for data packet delivery with a mobile station (MS) in a service area. In addition, SGSN 140 has functions such as packet routing and transmission, mobility management, logical link management, authentication and charging.

MSC 150, also known as a mobile switching center, provides a circuit switching service to a mobile communication subscriber in conjunction with a fixed network. The MSC 150 configures an access point for user traffic between the mobile communication network and the general telephone network, and other mobile switching centers in the same or different mobile communication networks. The MSC 150 additionally tracks the location of the mobile subscriber and always moves. It has a hand-off feature that allows you to provide telephony services and to maintain communication services even when locations change.

GMSC 160, also known as a gateway mobile communication switching center, has an automatic tracking connection function that determines the VMSC and selects a call by referring to the location information stored in the HLR.

The HLR 220, also called a home location register, is a database of mobile subscribers having subscriber terminal information, subscription information, location information, authentication functions, and the like in a mobile communication switch.

The SCP 230 is in charge of service control, and performs service control such as eligibility check, routing, and information translation of information received from a service switching point (SSP) (not shown).

FIG. 2 is a flowchart illustrating a process of creating a database by a GLR in the roaming additional service providing method by a roaming additional service providing system for an inbound roaming service subscriber of FIG. 1.

Referring to FIG. 2, when the mobile communication subscriber of the overseas network 200 is a subscriber of a prepaid service, and the mobile communication subscriber subscribes to the roaming additional service of the home network 100 (S101), CCBS 110 transmits the information on the roaming additional service for the mobile communication subscriber of the overseas network 200 to the RSCP (120) to register the service (S102). At this time, when the foreign network 200 is a partner network, the CCBS 210 of the overseas network 200 and the CCBS 110 of the home network 100 is the MSISDN range and home network in the partner network 200 of the subscriber SIMN service It is preferable to exchange the information on the MSISDN range in (100), and the charging information for the prepaid service of the foreign network 200.

RSCP 120 stores the MSISDN of the home network 100, i.e., the minor number of the home network 100, for the mobile communication subscriber of the overseas network 200 by the service registration by the CCBS 110 (S103). The stored information is transmitted to the GLR 130 to register a service (S104).

The GLR 130 generates a database of subscribers of the roaming additional service in the home network 100 based on the information registered in the RSCP 120 (S105).

3 is a flowchart illustrating a process of updating subscriber location information by RSCP in the roaming additional service providing method by the roaming additional service providing system for the inbound roaming service subscriber of FIG. 1.

When the mobile communication subscriber of the overseas network 200 receives the inbound roaming service in the home network 100, the paging signal from the inbound roaming service subscriber (hereinafter referred to as MS (Mobile Station)) 201 is transmitted to the home network ( 100 is transmitted to the SGSN 140 (S201), the SGSN 140 of the home network 100 transmits an UGL (Update GPRS Location) signal to the GLR 130 of the home network (100) (S202). The GLR 130 of the home network 100 transmits the received UGL signal to the HLR 220 of the overseas network 200 and receives an ISD (Insert Subscriber Data) message from the HLR 220 of the overseas network 200. (S203). Here, the ISD message is a message in which the HLR transmits a subscriber profile to the MSC. When the MS 201 is a subscriber of the prepaid service of the foreign network 200, the Origin-CAMEL Subscriber Information corresponding to the prepaid service is used. ) (Original intelligence network information) message. Thereafter, between the GLR 130 of the home network 100 and the HLR 220 of the overseas network 200, an ISD response signal for the ISD and a UGL response signal for the UGL are accompanied.

 After the response signal for the UGL transmitted to the HLR 240 of the foreign network 200 is received, the GLR 130 of the home network 100 determines whether the MS 201 has subscribed to the roaming supplementary service. In operation S204, when the subscriber is a subscriber of the roaming additional service, the ISD is transmitted to the SGSN 140 of the home network 100 (S205). In this case, the GLR 130 stores subscriber information in an internal database according to ISD information received from the HLR 220 of the overseas network 200, and the home network 100 when the MS 201 is subscribed to the roaming additional service. The prepaid service information received from the HLR 220 of the overseas network 200 is changed to Date-CSI (Designate Intelligent Network Information) when the ISD message is transmitted to the SGSN 140 of the CIS 140, and the roaming supplementary service After allocating the subscribed information to the O-CSI, the remaining information except for the O-CSI and D-CSI is transmitted in the ISD message. Here, the information stored in the D-CSI is set to work with the SCP 230 of the overseas network 200, the information stored in the O-CSI is set to work with the RSCP 120 of the home network 100 It is desirable to have.

The SGSN 140 transmits a response signal for the ISD message to the GLR 130, and the GLR 130 transmits a response signal for the UGL to the SGSN 140.

When the location registration with the SGSN 140 is terminated, the GLR 130 transmits information on the prepaid service received from the HLR 220 of the foreign network 200 and information on the roaming additional service to the RSCP 120. The RSCP 120 registers and manages the information about the prepaid service received from the HLR 220 of the overseas network 200 and the information about the roaming additional service to the subscriber database in the subscriber database (S207) (S207). ).

Meanwhile, the SGSN 140 of the home network 100 transmits an UL (Update Location) request signal to the MSC 150 of the home network 100 in response to the UGL response signal from the GLR 130 (S208). The MSC 150 transmits a UL signal to the GLR 130 of the home network 200 (S209), the GLR 130 retransmits the UL signal to the HLR 220 of the overseas network 200, and the overseas network ( The HLR 240 of 200 transmits the ISD to the GLR 230 of the home network 100 with respect to the received UL signal. At this time, O-CSI information corresponding to the prepaid service of the overseas network 200 is transmitted to the GLR 130 of the home network 100 together with the ISD message, and the GLR 130 and the overseas network (the home network 100) The ISD response signal and the UL response signal are exchanged between the HLRs 220 of S200 (S210).

After the response signal for the UL is received from the HLR 220 of the foreign network 200, the GLR 130 of the home network 100 determines whether or not to subscribe to the roaming additional service (S211), the roaming additional service In the case of the subscriber, the ISD is transmitted to the MSC 150 of the home network 100. In this case, the GLR 130 stores subscriber information in an internal database according to ISD information received from the HLR 220 of the overseas network 200, and the home network 100 when the MS 201 is subscribed to the roaming additional service. When the ISD message is transmitted to the MSC 150, the prepaid service information received from the HLR 220 of the foreign network 200 is changed to Date-CSI (Date-CSI), and the information subscribed to the roaming supplementary service is O. -CSI transmits by assigning. The GLR 130 of the home network 100 transmits a UL response signal in response to the ISD response signal from the MSC 130 (S212), and the MSC 150 of the home network 100 transmits the LU response signal to SGSN ( In step S213 and S214, the SGSN 140 allows access to the MS 201 in response to the LU response signal. In addition, the RSCP 220 receives the location registration information and the information on the roaming additional service from the GLR 130 and updates the database of the roaming additional service subscriber (S215 and S216).

4 is a flowchart illustrating a logic execution process of a roaming additional service in the roaming additional service providing method by a roaming additional service providing system for an inbound roaming service subscriber of FIG. 1.

Referring to FIG. 4, when the MS 201 subscribing to the prepaid service of the overseas network 200 transmits a roaming additional service request signal (S301), the MSC 150 is assigned to the priority of the CSI information set at the time of location registration. Therefore, O-CSI information is operated first. In this case, the inbound roaming supplementary service of the home network 100 is set in the O-CSI, and since the roaming supplementary service is processed by the RSCP 120, an IDP (Initiate Detect Point) message is transmitted to the RSCP 220 of the home network 200. (Also referred to as a drive request message) is transmitted (S302, S303). Here, IDP is a message requesting to run service logic in SCP according to MSC CAMEL Subscription Information (CSI).

The RSCP 120 executes the logic of the roaming additional service based on the received IDP message (S304). When the MS 201 is a subscriber of the prepaid service, the call processing is performed by prefixing the called party number with the RN corresponding to the prepaid service. A connect message is transmitted to the MSC 150 to be executed (S305 and S306).

The MSC 150 of the home network 100 confirms whether the RN of the prepaid service is registered in the D-CSI based on the connect message, and then sends an IDP message to the SCP 230 of the foreign network 200 according to the D-CSI information. By sending the charges for the roaming additional service is deducted in real time according to the prepaid service (S307 to S309).

When the remaining amount of the prepaid service is more than a predetermined amount, the SCP 230 of the overseas network 200 receives signals such as RRBE (Request Report BCSM Event), Call Information Request (CIRQ), AC, and CONN, etc. The MSC 150 transmits the data (S310).

The MSC 150 of the home network 100 processes an incoming signal from the MS 201 (S311), transmits an IAM (Initiate Address Message) to the GMSC 160 of the home network 100, and GMSC 140 Receive the ACM / ANM from the (S312). Thereafter, the MSC 150 of the home network 100 transmits an ERB (Event Report BCSM) message to the SCP 230 of the overseas network (S313), and again sends an ERB message, CIRP, and ACR after the call processing is completed. (S314, S315).

The SCP 230 of the foreign network 200 transmits a Furnish Charging Information (FCI) message to the MSC 150 of the home network 100 in response to the received signal, whereby the MS 201 transmits the home network 100 to the home network 100. In the case where the called number is transmitted to the home network 200 or other roaming additional service is used, the prepaid service ends.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the specific embodiments of the present invention without departing from the spirit of the present invention as claimed in the claims. Anyone skilled in the art can make various modifications, as well as such modifications are within the scope of the claims.

According to the present invention, a roamer who pays a prepaid amount in an overseas network or sets a predetermined billing limit amount is processed only within a range of a prepaid amount or a predetermined amount even when receiving a roaming supplementary service in a home network. The roaming supplementary service can prevent a lot of charges from being unknowingly charged.

1 is a block diagram schematically illustrating a roaming additional service providing system for an inbound roaming service subscriber according to an embodiment of the present invention;

2 is a flowchart illustrating a database generation process by a GLR in the roaming additional service providing method by a roaming additional service providing system for an inbound roaming service subscriber of FIG. 1;

3 is a flowchart illustrating a process of updating subscriber location information by RSCP in a roaming additional service providing method by a roaming additional service providing system for an inbound roaming service subscriber;

4 is a flowchart illustrating a logic execution process of a prepaid service by RSCP in a roaming additional service providing method by a roaming additional service providing system for an inbound roaming service subscriber.

Claims (13)

A database generator configured to generate a database for the subscriber of the roaming additional service when the subscriber of the inbound roaming service subscribed to the overseas prepaid service subscribes to the roaming additional service of the home network; A roaming additional service execution unit that registers and stores information on the prepaid service of a subscriber of the roaming additional service, and executes a roaming additional service of the home network; And The billing information is transmitted to the roaming service control unit of the overseas network so that the billing for the roaming additional service executed by the roaming additional service execution unit is deducted in real time by the prepaid service of the overseas network, and the subscriber of the roaming additional service And a mobile communication exchange unit for interlocking the roaming supplementary service execution unit according to the intelligent network information of the roaming supplementary service based on a roaming supplementary service request signal transmitted from the roaming supplementary service request signal. The method of claim 1, Receiving a subscriber profile from the database generation unit, and further comprising a GPRS service support unit for transmitting a corresponding response message to the database generation unit, The database generation unit obtains a subscriber profile from the subscriber registration unit of the foreign network and determines whether to subscribe to the roaming additional service, and transmits the subscriber profile to the GPRS service support unit when it is determined that the roaming additional service is a subscriber. A roaming supplementary service provision system for an inbound roaming service subscriber. delete The method according to claim 1 or 2, If the subscriber of the roaming additional service is a subscriber of the prepaid service of the foreign network, the roaming additional service execution unit attaches the code corresponding to the prepaid service to the called party number to proceed with the call processing. Roaming supplementary service provision system. Generating a database of subscribers of the prepaid service and the roaming additional service when an inbound roaming service subscriber who has subscribed to a prepaid service of an overseas network subscribes to a roaming additional service of a home network; Receiving and storing information on the prepaid service of a subscriber of the roaming supplementary service from the foreign network; Registering information about a subscriber of the roaming supplementary service to a roaming supplementary service execution unit; And When the roaming additional service is executed in the home network, transmitting billing information for the roaming additional service to the foreign network so that the prepaid service is deducted in real time. And a database generator generates the database based on information about a subscriber of the roaming supplementary service registered in the roaming supplementary service execution unit. delete The method of claim 5, Determining, by the database generator, a subscriber profile from the subscriber registration unit of the foreign network based on the paging signal of the inbound roaming service subscriber, and determining whether to subscribe to the roaming additional service; If it is determined that the roaming supplementary service is a subscriber, transmitting the subscriber profile to the mobile communication switch by the database generator; And The database generator further comprises the step of receiving a response message from the mobile communication exchange, And a roaming supplementary service execution unit updates subscriber location information based on a response message from the mobile communication exchange unit. The method of claim 7, wherein If it is determined that the roaming additional service is a subscriber, the database generation unit changes the original intelligent network information message corresponding to the prepaid service received from the foreign network into a target intelligent network information message and replaces the information subscribed to the roaming additional service with the target intelligent network. Roaming supplementary service providing method for an inbound roaming service subscriber, characterized in that the information is transmitted to the mobile communication exchange. The method of claim 5, Determining, by the database generator, a subscriber profile from the subscriber registration unit of the foreign network based on a location update request signal from a GPRS service support unit, and determining whether to subscribe to the roaming additional service; If it is determined that the roaming additional service is a subscriber, transmitting the subscriber profile of the database generator to the mobile communication switching unit; And The database generator further comprises the step of receiving a response message from the mobile communication exchange, And the roaming additional service execution unit updates subscriber location information based on a response message from the mobile communication switching unit. The method of claim 5, Interworking the roaming supplementary service execution unit by a mobile communication exchange unit according to the original intelligent network information of the roaming supplementary service based on a roaming supplementary service request signal transmitted from a subscriber of the roaming supplementary service; And And the roaming additional service execution unit executing the logic of the roaming additional service. The method of claim 10, When the subscriber of the roaming additional service is a subscriber of the prepaid service of the overseas network, the roaming additional service execution unit performs a call processing by prefixing a code corresponding to the prepaid service with a called number. Roaming supplementary service for. The method of claim 11, And transmitting a driving request message to the roaming service control unit of the overseas network so that the roaming service control unit of the overseas network is interlocked according to a code corresponding to the prepaid service. Roaming supplementary service provision method for subscribers. The method of claim 5, The inbound roaming service subscriber is provided with a primary number in the foreign network and a secondary number in the home network.

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