KR102206353B1 - System and method for providing roaming subscriber with additional service - Google Patents

Abstract

Disclosed is a system and method for conveniently providing various additional services that can be used in a country of a visited network to a mobile communication subscriber, even if a mobile communication subscriber roaming from a home network to a visited network does not make a separate request from the visited network. According to an aspect of the present invention, a roaming system for providing an additional service to a mobile communication terminal that has roamed from a home network to a visited network, the additional service authentication request for the mobile communication terminal registered in the location of the visited network from the visited network. And an authentication server of the home network for receiving and transmitting an authentication response thereto to the visited network.

Description

System and method for providing additional services to roaming subscribers {SYSTEM AND METHOD FOR PROVIDING ROAMING SUBSCRIBER WITH ADDITIONAL SERVICE}

The present invention relates to a roaming service of a mobile communication service, and more particularly, to an apparatus and method for providing an additional service to a subscriber roaming from a home network to a visited network.

In the mobile communication service, when a mobile communication service subscriber visits overseas or when visiting a mobile communication service provider's area in another region, mobile communication in both regions is provided to the subscriber through a bilateral agreement between the mobile communication service provider and the interworking between the system. The service providing the service is called a roaming service.

In the roaming service, an international roaming gateway system and an international roaming billing settlement system must be established through bilateral agreements between mobile communication service providers of the home network and the visited network. When a subscriber who has subscribed to a mobile communication service of a home network operator visits the service area of a visiting network operator, the subscriber is referred to as an inbound roaming subscriber from the point of view of the visiting network.

In international roaming, the operator of the visited network can earn income according to the portion of the communication use when an inbound roaming subscriber who has roamed through its communication network uses the communication service of the visited network. However, in most international roaming, when a mobile communication subscriber roams from a home network to a visited network, the service provider of the visited network stays on promoting the use of welcome SMS or the like. Representatively, Korean Patent Publication No. 10-2011-0023579 is exemplified.

Korean Patent Publication 10-2011-0023579

The present invention has been proposed to solve the above problems, and provides various additional services available in the country of the visited network even if a mobile communication subscriber roaming from the home network to the visited network does not make a separate request from the visited network. The purpose of this is to provide a system and method for conveniently providing subscribers.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by examples of the present invention. In addition, it will be easily understood that the objects and advantages of the present invention can be realized by the means shown in the claims and combinations thereof.

In accordance with an aspect of the present invention for achieving the above object, a roaming system for providing an additional service to a mobile communication terminal roaming from a home network to a visited network, additional service authentication for the mobile communication terminal registered in the location in the visited network And an authentication server of the home network that receives a request from the visited network and transmits an authentication response thereto to the visited network.

When the mobile communication terminal initially registers a location in the visited network, the authentication server may receive the additional service authentication request from the location registration processing device of the visited network.

The authentication server may transmit the authentication response to the location registration processing device.

When the mobile communication terminal initially registers a location in the visited network, the authentication server may receive the additional service authentication request from a service server that provides an additional service in the visited network.

When the mobile communication terminal initially registers a location in the visited network, the service server receives information on the mobile communication terminal from the location registration processing device of the visited network, and accordingly sends the additional service authentication request to the authentication server. Can be transferred to.

The authentication server may approve the additional service when the mobile communication terminal subscribes to the data roaming service and disapprove the additional service when the mobile communication terminal does not subscribe to the data roaming service.

The authentication server may transmit an authentication response including information of differential supplementary service rights according to the type of data roaming service subscribed to by the mobile communication terminal.

According to another aspect of the present invention for achieving the above object, a method of providing an additional service in the visited network to a mobile communication terminal roaming from a home network to a visited network, the location registration processing device of the visited network, the mobile communication terminal Transmitting an additional service authentication request for the mobile communication terminal to an authentication server of a home network upon receiving a location registration request from the terminal; Receiving, by the location registration processing device, an authentication response from the authentication server and transmitting the authentication response to a service server of a visited network; And providing, by the service server, an additional service to the mobile communication terminal based on the authentication response.

In the step of transmitting the supplementary service authentication request, the location registration processing apparatus may transmit the supplementary service authentication request when the location registration request is the first location registration request after roaming.

When the mobile communication terminal subscribes to the data roaming service in the home network, the authentication response may include information on approval of the additional service, and when the mobile communication terminal does not subscribe to the data roaming service, information on disapproval of the additional service may be included.

The information on the approval of the supplementary service may include information on the differential supplementary service authority according to the type of the data roaming service subscribed to by the mobile communication terminal.

According to another aspect of the present invention for achieving the above object, a method for providing an additional service in the visited network to a mobile communication terminal roaming from a home network to a visited network is provided, wherein the location registration processing apparatus of the visited network includes the mobile communication Transmitting information of the mobile communication terminal to a service server of a visited network upon receiving a location registration request from the terminal; Transmitting, by the service server, an additional service authentication request for the mobile communication terminal to an authentication server of a home network; And receiving, by the service server, an authentication response from the authentication server and providing an additional service to the mobile communication terminal based on the received authentication response.

In the step of transmitting the information of the mobile communication terminal, the location registration processing apparatus may transmit information of the mobile communication terminal to the service server when the location registration request is the first location registration request after roaming.

The present invention can provide information such as cultural information, restaurant information, shopping information, etc. in the country of the visited network to a mobile communication subscriber roaming from the home network to the visited network, and also access to tourist places, coupons and Ticketing service can be provided.

In particular, in the present invention, when a mobile communication subscriber roaming from a home network to a visited network first registers a location on the visited network, the mobile communication subscriber is a subscriber who can receive additional services from the visited network by authenticating in the home network. It is possible to easily provide additional services to the mobile communication subscriber in the visited network even if the communication subscriber does not apply separately from the visited network or the home network.

According to the present invention, when a mobile communication subscriber subscribes to a data roaming service on a home network and roams to a visited network, the data roaming service is provided by providing various additional services to the mobile communication subscriber by simply subscribing to the data roaming service. Can promote the use of

1 is a diagram schematically showing the configuration of a roaming system according to an embodiment of the present invention.
2 is a flowchart illustrating a method of providing an additional service in a roaming system according to an embodiment of the present invention.
3 is a flowchart illustrating a method of providing an additional service in a roaming system according to another embodiment of the present invention.

The above-described objects, features, and advantages will become more apparent through the following detailed description in connection with the accompanying drawings, whereby those of ordinary skill in the technical field to which the present invention pertains can easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram schematically showing the configuration of a roaming system according to an embodiment of the present invention.

Referring to FIG. 1, a roaming system according to the present embodiment includes a mobile communication terminal 110, a visiting network 120, and a home network 130. The mobile communication terminal 100 is a terminal roaming from the home network 130 to the visited network 120, and interlocks with the visited network 120 and the home network 130 to perform conventional voice calls and data communication through wireless communication. PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, Hand-Held PC (Hand-Held PC), CDMA-2000 phone, WCDMA phone, PMP (Portable Multimedia Player), PSP (PlayStation) Portable), MBS (Mobile Broadband System) phone may be any one, but is not limited thereto. That is, the mobile communication terminal 110 is a terminal of a subscriber subscribed to the home network 130, and any terminal capable of performing voice calls and data communication by roaming from the home network 130 to the visited network 120 is possible.

Mobile communication service providers of the home network 130 and the visited network 120 provide roaming services by interlocking the international roaming gateway system and the international roaming billing settlement system through a bilateral agreement. At this time, when a subscriber who has subscribed to the mobile communication service of the home network 130 roams to the service area of the visited network 120, the terminal may be defined as an inbound roaming terminal from the perspective of the visited network 120, and the home network 130 ), the terminal can be defined as an outbound roaming terminal.

The visited network 120 is a network in which the mobile communication terminal 110 roams, and is basically wirelessly connected to the mobile communication terminal 110 to perform services such as voice communication service, wireless data service, video call or message service. It performs all the functions to make it happen.

The visited network 120 according to an embodiment of the present invention includes an exchange 122, a gateway location register (GLR) 124, and a service server 126. Here, the exchange 122 and the GLR 124 may be understood as a location registration processing device in the present invention. In addition, the switch 122 may include equipment such as a circuit switch or a gateway GPRS support node (GGSN)/serving GPRS support node (SGSN) in a WCDMA system, and a mobility management entity (MME) in an LTE system. Meanwhile, in an embodiment of the present invention, it is described that the visited network 120 is configured to include only the switch 122, the GLR 124, and the service server 126, but this describes the technical idea of an embodiment of the present invention. It is merely illustratively described, and for those of ordinary skill in the technical field to which an embodiment of the present invention belongs, the visited network 120 is a base station transmitter, a base station controller, and a mobile communication terminal 110 for providing a mobile communication service. ) Of the billing and the roaming billing with the home network 130 may be additionally included.

The switch 122 can perform basic and supplementary service processing for providing voice communication services, processing of incoming and outgoing calls of subscribers, processing of location registration procedures and handoff procedures, interworking functions with other networks, and the like. For this, authentication and registration are performed when the mobile communication terminal 110 is connected, and mobility is ensured when the mobile communication terminal 110 moves between base stations. In addition, the switch 122 performs a function of receiving a location registration message from the mobile communication terminal 110 roaming inbound from the home network 130 to the visited network 120 and transmitting it to the GLR 124.

The switch 122 may know the country and the operator of the home network 130 of the mobile communication terminal 110 from identification information of the mobile communication terminal 110 that has roamed inbound, for example, an International Mobile Subscriver (IMSI). IMSI is a subscriber identification number of 15 digits or less, MCC (Mobile Contry Code) to identify a country with 3 digits, Mobile Network Code (MNC) to identify a network with 2 to 3 digits, and MSISDN, which is a number to identify subscribers. It consists of (Mobile Subscriber Identification Number).

The GLR 124 is a gateway location register that serves as a gateway for the location registration processing of the mobile communication terminal 110 roaming from the home network 130 to the visited network 120, and a location registration request from the mobile communication terminal 110 is received. Upon receipt, a location registration request is made to the home location register 132 of the home network 130 accommodating the mobile communication terminal 110. In this embodiment, the GLR 124 is shown in the drawing as being only in the visited network 120, but the gateway location register may be in the home network 130, or exist in both the visited network 120 and the home network 130. So they can be interconnected.

The home location register 132 (HLR) is a database storing a service profile on information of a mobile communication subscriber, and includes a terminal identification number (MIN) and a terminal identification number (ESN) of the mobile communication terminal 110. Electronic Serial Number) and subscriber profile and location information such as subscription service type information. The home location register 132 can be understood as including a home subscriber server (HSS) in the LTE system. The home location register 132 performs a location registration procedure of the mobile communication terminal 110 roaming to the visited network 120 by using the location registration message received from the GLR 124 of the visited network 120. The home location register 132 stores and manages subscriber profiles and location information for all mobile communication terminals registered in its own network.

The GLR 124 receives the subscriber profile from the home location register 132 of the home network 130 and transmits it to the switch 122 of the visited network 120. In addition, the GLR 124 is routed between the home location register 132 of the home network 130 and the switch 122 of the visited network 120, or between the home location register of the visited network 120 and the switch of the home network 130 Relay the exchange of information.

When the mobile communication terminal 110 roams from the home network 130 to the visited network 120 to register the location, the location registration processing device, that is, the GLR 124 or the switch 122, the authentication server of the home network 130 ( The additional service authentication request from the visited network 120 may be transmitted to 134 and an authentication response may be received. Here, the additional service provides cultural information, restaurant information, shopping information, etc. of the visit network 120 to the mobile communication terminal 110 roaming from the home network 130 to the visit network 120, and the visit network 120 ) It is a service that provides passes, coupons and ticketing for various shopping malls, cultural spaces, performances, etc.

The communication service provider of the home network 130 stores the information of the mobile communication subscribers who have applied for the additional service in the authentication server 134, and the authentication server 134 receives an additional service authentication request from the communication network of another country. The authentication success or authentication failure response is transmitted to the communication network of another country based on the additional service subscription information. Here, the additional service subscription information may be general roaming service subscription information.

For example, as a roaming service, KT provides various data roaming services such as unlimited data roaming, automatic data roaming unlimited, data roaming 10,000 won, and data roaming 30,000 won, and roaming from home network 130 to visited network 120 When a subscriber subscribes to such a data roaming service in the home network 130, it may be treated as being automatically subscribed to the additional service. That is, the mobile communication subscriber does not need to separately apply for the additional service, and simply subscribes to the general data roaming service to subscribe to the additional service. Accordingly, the authentication server 134 may be a device that stores subscriber information of a data roaming service. When a communication service provider subscribes to the data roaming service, it notifies that the above-described additional service is automatically provided and can market the data roaming service. In this embodiment, data roaming is exemplified, but it is not limited thereto, and other products may be selected as a condition for providing additional services according to the policy of a communication service provider. For example, a subscription to a Genie music service or the like for a monthly fee, or purchasing a product with a prepaid fee may be used.

When the authentication success response is received from the authentication server 134 of the home network 130, the GLR 124 or the switch 122 transmits the information of the mobile communication terminal 110 to the service server 126 of the visited network 120. send.

Alternatively, according to another embodiment, the GLR 124 or the exchange 122 does not transmit an additional service authentication request to the authentication server 134 of the home network 130, and the service server 126 directly It is possible to transmit an additional service authentication request to the authentication server 134 and receive an authentication response accordingly. To this end, when it is determined that the mobile communication terminal 110 has roamed from the home network 130 to the visited network 120, that is, when registering the initial location, the GLR 124 or the switch 122 ) Information is transmitted to the service server 126.

The service server 126 can push various cultural information, restaurant information, shopping information, coupons, etc. to the mobile communication terminal 110 subscribed to the additional service as a short message (SMS) or multimedia message (MMS) or a dedicated application. have. In addition, the service server 126 may perform access authentication, ticketing authentication, transportation payment service, etc. in connection with systems such as various shopping malls, cultural spaces, and performance halls of the country of the visited network 120. That is, when a subscriber uses the NFC/QR code function of the mobile communication terminal 110 to tag the access system in a shopping mall, a cultural space, or a concert hall, the access system transmits an authentication request to the service server 126 and responds with authentication success. When receiving, access is permitted. Examples of cultural information include museum audio guides.

The authentication server 134 of the home network 130 may differentiate the use rights of the additional service and transmit an authentication response including authority information according to the difference. For example, as a roaming service, KT provides various data roaming services such as unlimited data roaming, automatic data roaming unlimited, data roaming 10,000 won, and data roaming 30,000 won, and is added according to the product type of data roaming service used by subscribers. Differentiate the right to use the service. For example, a subscriber using a 10,000-won data roaming ticket can provide free access service to three museums, and a subscriber using a 30,000-won data roaming ticket can provide free access service to an unlimited number of museums. The authentication response may include information on approval or disapproval of additional services, and in the case of approval, information according to differential authority may be included.

In addition, the authentication server 134 of the home network 130 may assign an additional service use right according to a subscriber's existing service pattern and transmit an authentication response accordingly.

When the service provider of the home network 130 roams to the visited network 120 and uses the additional service as described above, the service provider of the home network 130 sends the revenue according to the roaming plan subscribed by the subscriber to the service provider of the visited network 120. It will be settled. To this end, the international roaming billing settlement system of the home network 130 operator setstles some of the roaming service charges to the operator of the visited network 120 according to the rate negotiated with the operator of the visited network 120.

2 is a flowchart illustrating a method of providing an additional service in a roaming system according to an embodiment of the present invention.

Referring to FIG. 2, first, a mobile subscriber of the home network 130 subscribes to a roaming data service in the home network 130 before moving to the visited network 120. The operator of the home network 130 stores the roaming data service subscription information of the mobile communication subscriber in the authentication server 134.

The mobile communication subscriber carries the mobile communication terminal 110 and moves from the home network 130 to the visited network 120. The mobile communication terminal 110 performs location registration in the visited network 120. That is, the mobile communication terminal 110 transmits a location registration request to the exchange 122 of the visited network 120 (S201). The exchange 122 transmits a location registration request to the GLR 124 (S203).

The GLR 124 checks the country information of the mobile communication subscriber and the communication service provider information of the home network 130 based on the identification information of the mobile communication terminal 110 included in the location registration request, and based on this, the home location of the home network 130 A location registration request is transmitted to the register 132 (S205).

In addition, the GLR 124 transmits an additional service authentication request to the authentication server 134 of the home network 130 (S207). At this time, the additional service authentication request includes identification information of the mobile communication terminal 110, for example, IMSI, or/and MSISDN.

The authentication server 134 of the home network 130 uses the identification information of the mobile communication terminal 110 included in the additional service authentication request to check whether the mobile communication subscriber is the additional service target, and sends an authentication response as a result of the GLR ( 124) (S209). For example, when a mobile communication subscriber subscribes to the data roaming service, it is determined as an additional service target.

In this case, the authentication server 134 may differentiate the use rights of the additional service for the mobile communication subscriber and transmit an authentication response accordingly. For example, as a roaming service, KT provides various data roaming services such as unlimited data roaming, automatic data roaming unlimited, data roaming 10,000 won, and data roaming 30,000 won, and is added according to the product type of data roaming service used by subscribers. Differentiate the right to use the service. For example, a subscriber using a 10,000-won data roaming ticket can provide free access service to three museums, and a subscriber using a 30,000-won data roaming ticket can provide free access service to an unlimited number of museums.

The GLR 124 transmits the authentication response received from the authentication server 134 of the home network 130 to the service server 126 (S211). The service server 126 provides additional services to the roaming mobile communication terminal 110 according to the information included in the received authentication response (S213). When the authentication response contains information indicating that the additional service is not targeted, the service server 126 does not provide the additional service. Here, the provision of additional services is to push various cultural information, restaurant information, shopping information, coupons, etc. to the mobile communication terminal 110 to a short message (SMS) or multimedia message (MMS) or a dedicated application, or a visit network ( 120) For example, providing access authentication, ticketing authentication, and transportation payment services in connection with systems such as various shopping malls, cultural spaces, and concert halls in the country. The service server 126 may differentially provide the differentiated supplementary service to the mobile communication terminal 110 according to the authority information included in the authentication response when the additional service usage rights are differentiated for each subscriber. The authentication response may include information on approval or disapproval of additional services, and in the case of approval, information according to authority may be included.

3 is a flowchart illustrating a method of providing an additional service in a roaming system according to another embodiment of the present invention.

Referring to FIG. 3, first, a mobile communication subscriber of the home network 130 subscribes to a roaming data service in the home network 130 before moving to the visited network 120. The operator of the home network 130 stores the roaming data service subscription information of the mobile communication subscriber in the authentication server 134.

The mobile communication subscriber carries the mobile communication terminal 110 and moves from the home network 130 to the visited network 120. The mobile communication terminal 110 performs location registration in the visited network 120. That is, the mobile communication terminal 110 transmits a location registration request to the exchange 122 of the visited network 120 (S301).

Upon receiving the location registration request, the exchange 122 checks whether it is inbound roaming and is the first location registration based on identification information (eg, IMSI) of the mobile communication terminal 110 included in the location registration request (S303). When the mobile communication terminal 110 is the first roaming location registration, the switch 122 transmits the information of the mobile communication terminal 110 to the service server 126 (S309). The information of the mobile communication terminal 110 includes, for example, IMSI, or/and MSISDN.

On the other hand, regardless of whether the exchange 122 transmits the information of the mobile communication terminal 110 to the service server 126, the location registration procedure proceeds normally. That is, the exchange 122 transmits a location registration request to the GLR 124 (S305). Then, the GLR 124 transmits the location registration to the home location register 132 of the home network 130 (S307).

The service server 126 receiving the information of the mobile communication terminal 110 from the switch 122 transmits an additional service authentication request to the authentication server 134 of the home network 130 based on the information of the mobile communication terminal 110. (S311). The additional service authentication request includes identification information of the mobile communication terminal 110.

The authentication server 134 of the home network 130 uses the identification information of the mobile communication terminal 110 included in the additional service authentication request to check whether the mobile communication subscriber is the additional service target, and sends an authentication response as a result of this to the service server. It transmits to (126) (S313). For example, when a mobile communication subscriber subscribes to the data roaming service, it is determined as an additional service target.

In this case, the authentication server 134 may differentiate the use rights of the additional service for the mobile communication subscriber and transmit an authentication response accordingly. For example, as a roaming service, KT provides various data roaming services such as unlimited data roaming, automatic data roaming unlimited, data roaming 10,000 won, and data roaming 30,000 won, and is added according to the product type of data roaming service used by subscribers. Differentiate the right to use the service. For example, a subscriber using a 10,000-won data roaming ticket can provide free access service to three museums, and a subscriber using a 30,000-won data roaming ticket can provide free access service to an unlimited number of museums.

The service server 126 provides additional services to the roaming mobile communication terminal 110 according to the information included in the received authentication response (S315). When the authentication response contains information indicating that the additional service is not targeted, the service server 126 does not provide the additional service. Here, the provision of additional services is to push various cultural information, restaurant information, shopping information, coupons, etc. to the mobile communication terminal 110 to a short message (SMS) or multimedia message (MMS) or a dedicated application, or a visit network ( 120) For example, providing access authentication, ticketing authentication, and transportation payment services in connection with systems such as various shopping malls, cultural spaces, and concert halls in the country. The service server 126 may differentially provide the differentiated supplementary service to the mobile communication terminal 110 according to the authority information included in the authentication response when the additional service usage rights are differentiated for each subscriber. The authentication response may include information on approval or disapproval of additional services, and in the case of approval, information according to authority may be included.

When an additional service is provided to the mobile communication terminal 110 through the process described with reference to FIGS. 2 and 3, the service provider of the home network 130 receives the revenue according to the roaming plan to which the subscriber subscribes to the visited network 120. It is paid to the business operator. To this end, the international roaming billing settlement system of the home network 130 operator setstles some of the roaming service charges to the operator of the visited network 120 according to the rate negotiated with the operator of the visited network 120.

While this specification includes many features, such features should not be construed as limiting the scope or claims of the invention. In addition, features described in separate embodiments herein may be combined and implemented in a single embodiment. Conversely, various features described in a single embodiment herein may be individually implemented in various embodiments, or may be implemented in an appropriate subcombination.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those of ordinary skill in the technical field to which the present invention belongs. It is not limited by the drawings.

110: mobile communication terminal
120: visit network
130: home network
122: switchboard
124: GLR
126: service server
134: authentication server

Claims (15)

In a roaming system for providing an additional service to a mobile communication terminal roaming from a home network to a visited network,
A home location register of the home network for receiving a location registration request for the mobile communication terminal registered by the visited network from a location registration processing device of the visited network; And
Receives an additional service authentication request for the mobile communication terminal registered in the visited network from the location registration processing device of the visited network or a service server providing additional services in the visited network, and an authentication response thereto to the visited network Roaming system including; an authentication server of the home network to transmit. The method of claim 1,
The authentication server,
When the mobile communication terminal initially registers a location in the visited network, the roaming system, wherein the additional service authentication request is received from a location registration processing device of the visited network. The method of claim 2,
The authentication server,
And transmitting the authentication response to the location registration processing device. The method of claim 1,
The authentication server,
When the mobile communication terminal initially registers a location in the visited network, a roaming system comprising receiving the additional service authentication request from a service server providing an additional service in the visited network. The method of claim 4,
The service server,
When the mobile communication terminal initially registers the location in the visited network, the mobile communication terminal receives information on the mobile communication terminal from the location registration processing device of the visited network and transmits the additional service authentication request to the authentication server accordingly. Roaming system. The method according to any one of claims 1 to 5,
The authentication server,
A roaming system, characterized in that when the mobile communication terminal subscribes to the data roaming service, the additional service is approved, and when the data roaming service is not subscribed, the additional service is not approved. The method of claim 6,
The authentication server,
A roaming system, characterized in that the mobile communication terminal transmits an authentication response including information on additional service authority differential according to the type of data roaming service subscribed to. In the method of providing an additional service in the visited network to a mobile communication terminal roaming from a home network to a visited network,
Transmitting, by the location registration processing apparatus of the visited network, a location registration request to a home location register of the home network upon receiving the location registration request from the mobile communication terminal;
Transmitting, by the location registration processing device of the visited network, an additional service authentication request for the mobile communication terminal to an authentication server of the home network upon receiving a location registration request from the mobile communication terminal;
Receiving, by the location registration processing device, an authentication response from the authentication server and transmitting the authentication response to a service server of a visited network; And
And providing, by the service server, an additional service to the mobile communication terminal based on the authentication response. The method of claim 8,
In the step of transmitting the supplementary service authentication request,
The location registration processing apparatus, when the location registration request is the first location registration request after roaming, transmits the additional service authentication request. The method of claim 8 or 9,
When the mobile communication terminal subscribes to the data roaming service on the home network, the authentication response includes information on approval of the additional service, and when the mobile communication terminal does not subscribe to the data roaming service, information on disapproval of the additional service is included. . The method of claim 10,
The method of claim 1, wherein the information on approval of the supplementary service includes information on a differential supplementary service authority according to a type of a data roaming service subscribed to by the mobile communication terminal. In the method of providing an additional service in the visited network to a mobile communication terminal roaming from a home network to a visited network,
Transmitting, by the location registration processing device of the visited network, a location registration request to a home location register of the home network upon receiving the location registration request from the mobile communication terminal;
Transmitting, by the location registration processing device of the visited network, the information of the mobile communication terminal to a service server of the visited network upon receiving a location registration request from the mobile communication terminal;
Transmitting, by the service server, an additional service authentication request for the mobile communication terminal to an authentication server of a home network; And
And providing, by the service server, an authentication response from the authentication server and providing an additional service to the mobile communication terminal based on the received authentication response. The method of claim 12,
In the step of transmitting information of the mobile communication terminal,
The location registration processing apparatus, when the location registration request is the first location registration request after roaming, transmits the information of the mobile communication terminal to the service server. The method of claim 12 or 13,
When the mobile communication terminal subscribes to the data roaming service on the home network, the authentication response includes information on approval of the additional service, and when the mobile communication terminal does not subscribe to the data roaming service, information on disapproval of the additional service is included. . The method of claim 14,
The method of claim 1, wherein the information on approval of the supplementary service includes information on a differential supplementary service authority according to a type of a data roaming service subscribed to by the mobile communication terminal.

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