KR20060043295A - Broadcast service system and methof for supporting roaming between networks - Google Patents

Abstract

The present invention provides a method and a BCAST service system capable of receiving a broadcast service provided by a home network or a visited network when a user roams between homogeneous or heterogeneous networks. BCAST service method according to the invention, the user roaming from the home network to the visited network to request a broadcast service; The home network performing user authentication with a home network; Requesting a service guide from a home network when the user authentication is completed; The home network directly delivering a service guide to a roaming user; Selecting a program or service in the delivered service guide to receive a broadcast service from a home network by a roaming user. The home and visited networks may be the same broadcast type network as the broadcast distribution system (BDS), but may have different programs to be provided or different broadcast type networks with different BDSs. Also, the home network is a broadcast type network that provides a broadcast service, and the visited network is a GSM or CDMA network that does not provide a broadcast service.

Mobile Broadcasting Service, Roaming, Home Network, Landing Network

Description

BROADCAST SERVICE SYSTEM AND METHOF FOR SUPPORTING ROAMING BETWEEN NETWORKS

1 is a diagram illustrating a roaming method of a mobile broadcast service according to a first embodiment of the present invention for receiving a broadcast service when a user moves from a home network to a visited network.

2 is a diagram illustrating a type of a terminal roaming from a home network to a visited network to receive a broadcast service from the visited network;

FIG. 3 is a diagram illustrating a broadcast service providing procedure when a program provided by a home network and a visited network is the same when a user roams between broadcast networks.

4 is a diagram illustrating a broadcast service providing procedure when a user provides a different program provided by a home network and a visited network when BDS roams between broadcast networks.

5 is a diagram illustrating a procedure for receiving a broadcast service provided in a home network through a general mobile communication network when a user roams from a broadcast network to a non-broadcast network (mobile communication network).

The present invention relates to a mobile communication system, and more particularly, to a mobile broadcast service (BCAST) system and a method for supporting a broadcast service between homogeneous and heterogeneous networks.

A broadcast service refers to a type of broadcasting service over the air or various additional information to a mobile terminal. The service provides information useful to all subscribers subscribing to its service (broadcasting service), and It is a new type of mobile terminal service that includes all types of services (multicast services) to a certain group of subscribers who have subscribed to a topic or content in advance. (OMA currently uses the two types of services collectively as the Broadcast (BCAST) service.)

However, in the current mobile communication network, a simple form of service for providing subscribers with simple information is provided, but a BCAST service in the form of multimedia broadcasting or various contents is not yet provided. Even if the BCAST service is provided in the future, it will be operated independently for each service provider. Therefore, if the user moves to another service provider area (Roaming case), the continuity of the broadcast service provided only in a specific area may not be guaranteed. . Moreover, when a user moves from a network to which a user subscribes and is located in a visited network, a procedure for receiving content provided from the network to which the user belongs is not defined.

Accordingly, it is an object of the present invention to provide a system and method for ensuring continuity for BCAST services when a user roams homogeneous and heterogeneous networks.

In order to achieve the above object, BCAST service system according to the present invention, the content generating object for providing content for the broadcast service; A home network that manages user information subscribed to the broadcast service and provides a terminal user with broadcast content provided from the content generating object; When the terminal user moves from the home network includes a visited network that provides a broadcast service to the roaming user in conjunction with the home network.

Preferably, the home network and the visited network are broadcast networks, and broadcast distribution systems (BDSs) are the same or different broadcast networks. In this case, the EDS includes DVB-H, MBMS, BCMCS, ISDB-T, T / S-DMB, and the like.

In one aspect of the present invention, the home network and the visited network each include a BSA (Broadcast Service Application) for receiving a content from a content generating object and providing a broadcast service to a user; A Broadcast Service Distribution (BSD) that performs BCAST services, interfaces, and scheduling functions to provide a broadcast service through a specific bearer; A broadcast distribution system (BDS) or an IN (interaction network) that performs mutual functions for distributing the broadcast service and performing bidirectional communication.

Preferably, the BSA provides a service guide to a user terminal when a roaming user requests a broadcast service or a service guide, and the BSA performs a user authentication procedure with a home network.

In addition, the home network is a broadcast network that provides a broadcast service, and the visited network is configured as a wireless network that does not provide a broadcast service. In this case, the broadcast network is a network providing services such as DVB-H, MBMS, BCMCS, ISDB-T, T / S-DMB, and the wireless network is a GSM or CDMA network.

In another aspect of the present invention, the broadcast network includes a BSA (Broadcast Service Application) for receiving a content from the content generating object and providing a broadcast service to a user; BSDA (Broadcast Service Distribution / Adaptation) for performing BCAST service, interface and contents, and scheduling function for providing a broadcast service through a specific bearer; A broadcast subscription management (BSM) for maintaining a service / content protection management function and user subscription information; A broadcast distribution system (BDS) or an IN (interaction network) that performs mutual functions for distributing the broadcast service and performing bidirectional communication.

Preferably, when the roaming user requests a broadcast service or a service guide, the BSM delivers service attribute information serviceable in the network to the BSDA, and the BSDA generates a service guide according to the service attribute and then delivers the service guide to the user terminal. In this case, the service guide generated by the BSA may be different from the service guide generated by the BSDA of the home network.

In order to achieve the above object, the BCAST service method according to an embodiment of the present invention in a broadcast service system for providing a broadcast service, in a broadcast service system for providing a broadcast service, the terminal user in the first network; Requesting a broadcast service by roaming to a second network; Delivering a service guide from the visited network to a user terminal; The roaming user selects one of several programs or services in a service guide and receives a broadcast service from a visited network.

Preferably, the first and second networks are broadcast type networks having the same broadcast distribution system (BDS), and the BDS includes DVB-H, MBMS, BCMCS, ISDB-T, T / S-DMB, and the like.

Preferably, the service guide may be the same as the service guide of the first network or may be different from the service guide of the first network as a service guide generated according to service attributes of the second network.

In order to achieve the above object, the BCAST service method according to another embodiment of the present invention in a broadcast service system providing a broadcast service, the user roaming from the first network to the second network to request a broadcast service; ; Checking whether the broadcast service programs provided by the second and second networks are different from each other by exchanging information with the first network; Requesting a service guide from the second network to the first network if the broadcast service programs of the first and second networks are different from each other; Delivering, by the first network, a service guide directly to a roaming user; Selecting one of several programs or services in the delivered service guide to receive a broadcast service from the first network by the roaming user.

Preferably, the first and second networks are networks in which a broadcast distribution system (BDS) is the same broadcast type but different programs are provided.

Preferably, the BDS includes DVB-H, MBMS, BCMCS, ISDB-T, T / S-DMB, and the like.

Preferably, the first and second networks are broadcast networks having different broadcast distribution systems (BDS).

Preferably, the service guide is delivered to the terminal through IP tunneling between the first and second networks.

Preferably, the first network is a broadcast network that provides a broadcast service, and the second network is a wireless network that does not provide a broadcast service. In this case, the broadcast type network is a network providing services such as DVB-H, MBMS, BCMCS, ISDB-T, T / S-DMB, and the wireless network is a GSM or CDMA network.

Hereinafter, preferred embodiments of the present invention will be described in detail.

The present invention proposes a method and a BCAST service system capable of receiving a broadcast service in a corresponding network when a user roams to a homogeneous or heterogeneous network. To this end, the present invention defines a component, an entity to be added and an interface between a terminal and an application server as follows.

A first embodiment of a broadcast (BCAST) service system according to the present invention comprises: a content creation object providing content; A network receiving content from the content generating object and providing a broadcast service to subscribers; It includes a terminal receiving a desired BCAST service from the network. Preferably, the network includes both a broadcast network or a non-broadcast network that does not support a broadcast service.

The network receives a predetermined content from a content generating object, provides a broadcast service such as a video audio / video or movie download to a user, and performs a maintenance / management function for providing a content protection or other broadcast service. BSA (Broadcast Service Application) and BSD (Broadcast Service Distribution) that performs BCAST service, interface and scheduling functions to provide broadcast service through specific bearers (DVB-H, MBMS, BCMCS ..etc) And a Broadcast Distribution System (BDS) or an IN (Interaction Network) that performs an interaction function for distributing broadcast services and performing bidirectional communication.

The terminal may include an application capable of receiving a broadcast service and an application capable of storing and editing a part of a broadcast service list provided by an operator, and also may store information on a channel preferred by a user. Accordingly, a user may store and edit a part of a list of broadcasting services provided by an operator.In addition to the services provided by the operator, the operator may also list services provided by another operator's network that has a roaming agreement. It can be delivered to the user by specifying that it is a service provided by another provider.

A roaming method for a broadcast service in a first embodiment of the BCAST system configured as described above is as follows.

1 is a diagram illustrating a procedure for receiving a broadcast service when a user moves from a home network to a visited network.

As shown in Fig. 1, when roaming occurs due to a user moving from a home network (abbreviated as home NW) to a visited network (abbreviated as visited NW), the user may receive a broadcast service or Request a Service Guide (SG) indicating a service provided by the visited NW. In this case, the user terminal roams may be divided into a case in which the terminal roams while using the broadcast service and a case in which the broadcast service subscriber requests a broadcast service in the visited NW after roaming in the home NW.

If the user was using the broadcasting service before roaming, the user requests the service guide (SG) to the visiting NW's BSD to receive the broadcasting service using the BCAST service supported by the visiting NW, and the request is a BSA. Delivered to.

Before providing the broadcasting service, the BSD of the visiting NW performs an authentication procedure for checking the authority of the home NW and the user. If the user's authority is authenticated, the BSD is provided with the SG from the visited NW's BSA. In this case, the SG provided by the visited NW's BSA may be different from the SG provided by the home NW due to time lapse. In this case, the BSA delivers service attributes such as the characteristics of a young program, broadcaster, and broadcast time to the BSD (Broadcast Service Disiribution), so that the BSD generates a substantial service guide and then sends the latest service guide to the user terminal. To pass.

The user receiving the SG from the visiting NW selects one of the programs or services included in the SG and then requests the content of the program or service from the visiting NW's BSD, and the request is forwarded to the BSA.

Accordingly, the BSA receives the content directly from the content creation object (Content Creation) and delivers the content to the BSD, and the BSD transmits the content to the user terminal so that the user can receive the broadcasting service provided in the home NW even in the visiting NW. do.

On the other hand, if the user is not using the BCAST service before roaming, the user requests the broadcast service to the BSD of the visiting NW, which is also forwarded to the BSA. The BSD performs a home NW and a user authentication procedure before providing a broadcast service, and receives the SG from the BSA and provides the terminal to the terminal. The user who receives the SG selects one of several programs or services in the SG and requests the contents of the corresponding program or service from the visited NW. This request is passed from the user terminal to the BSA via BSD.

Accordingly, the BSA transmits the content provided from the content creation object to the user terminal through BSD, so that the user terminal can be provided with a desired broadcast service in the visited NW.

The present invention can implement a second embodiment of the BCAST service system that differs in detail from the first embodiment of the BCAST service system to the network.

In the second embodiment of the BCAST service system, the network receives content from a content generating object, provides a broadcast service to a user, and performs a maintenance / management function for providing content protection or other broadcast service. A BSA to perform a BCAST service, an interface and a content, and a scheduling function to provide a broadcasting service through a specific bearer (DVB-H, MBMS, BCMCS ..etc); A broadcast subscription management (BSM) for maintaining a service / content protection management function and user subscription information; It includes a BDS or IN that performs a mutual function for distributing broadcast services and performing bidirectional communication.

The network includes a broadcast list checking function for checking a broadcast server and a user to check whether a current service is provided, and a server broadcast list for periodically checking and storing user information. exist. These entities are intended to facilitate retrieval of relevant information when a user requests a broadcast service in the future, and when the service is provided to another user by another provider, the information is stored together in the server broadcast list for future service. This is to facilitate the provision. In addition, even if the user does not separately edit and provide the information may be stored only in the server once and may be used to provide services later.

The terminal may include an application capable of receiving a broadcast service and an application capable of storing and editing a part of a broadcast service list provided by an operator, and an application capable of storing information on a channel preferred by a user. Accordingly, the user may store and edit a part of the broadcasting service list provided by the operator, and in addition to the service provided by the operator, the operator may also list other services provided by the network of another operator that has a roaming agreement. It can be delivered to the user by specifying that the service is provided by the operator. In the present invention, there is a device such as a terminal / laptop that can receive a broadcast service by accessing a mobile communication network. These devices support a service guide (SG) for program information, device management functions, and bidirectional communication services through an interaction channel.

A roaming method for a broadcast service in a second embodiment of the BCAST system configured as described above is as follows.

2 is a diagram illustrating three types of cases in which a roaming terminal receives a broadcast service.

The first figure shows the case where the user roams between broadcasting networks with the same BDS (eg, between MBMS), and the second figure shows the case where the user roams between broadcasting networks with different BDS (eg, between MBMS and V-DVB-H). The third figure shows a case where a user roams between heterogeneous networks between a broadcast network and a non-broadcast network (eg, a GSM or CDMA network that does not support broadcast service).

Therefore, in the second embodiment of the present invention, the roaming method for the broadcast service uses the broadcast service supported by the visited NW or the visited NW does not support the broadcast service when the terminal user roams to the homogeneous or heterogeneous network. Even if the user wants to provide a broadcast service. For example, if a user who receives the Multimedia Broadcast / Multicast Service (MBMS) service provided by the home NW moves to the visited NW, the digital video broadcast-handheld (DVB-H) service is not the MBMS service or the MBMS service from the visited NW. In the case of providing a, or in a visited NW does not provide a broadcast service is applied to provide a general mobile communication service only. In the present invention, the type of BDS is a bearer that provides broadcast services such as DVB-H, MBMS, BCMCS, ISDB-T, and T / S-DMB.

3 illustrates a procedure when a user wants to receive a broadcast service (same program) provided in a home NW even in a visited NW when the BDS roams between the same broadcast type networks. In this case, the BDS of the home NW and the BDS of the visited NW are the same as the MBMS, and the visited NW provides a broadcast service using the same service guide as the home NW.

In FIG. 3, when roaming occurs when the user moves from the home NW to the visited NW, the user terminal requests a broadcast service or a service guide to the BSA of the visited NW to use the broadcast service. In this case, whether the user requests the broadcast service or the service guide is determined depending on whether the user has used the broadcast service before roaming.

Before providing the broadcast service, the BSM of the visiting NW receives a broadcast service or service guide from the BSA through internal communication, and performs an authentication procedure for checking the authority of the BSM and the user (roaming subscriber) of the home NW. However, since the subscription information for the broadcasting service of the user, that is, information on which service or service bundle the user subscribed to exists in the home NW, the BSM of the visited NW requests the user's subscription information to the BSM of the home NW. Perform user authentication. The BSM is an entity that manages subscriber information on which broadcast service a subscriber subscribes to, and may exist in a broadcast server or as a separate entity.

Once the user's authentication is performed, the visited NW's BSA is responsible for providing service service information (Service Attributes) information (such as the nature of various programs, broadcaster information, broadcast time, etc.) that can be serviced in the network through internal communication. The BSDA generates a service guide according to the service attribute and then delivers the service guide to the user terminal. In this case, since the service attributes provided by the BSA of the visited NW may be different from the service attributes provided by the BSA of the visited NW, the service guide generated by the BSDA of the visited NW may also be different from the service guide generated by the BSDA of the home NW. have. The user who has received the service guide selects one of several programs or services in the service guide and requests the contents of the corresponding program or service to the BSA of the visiting NW.

Therefore, the BSA of the visited NW receives the content directly from the content creation object and transmits the content to the terminal so that the user terminal can receive the broadcast service provided in the home NW even in the visited NW.

Finally, the billing information for the content is exchanged between the home NW and the visited NW. This is done by internally transferring the actual content from the BSA of the home NW to the BSM, and then exchanging information between the home NW's BSM and the visited NW's BSM. .

FIG. 4 is a diagram illustrating a broadcast service providing procedure when programs having the same BDS but different programs provided by the home NW and the visited NW are different. That is, FIG. 4 is an embodiment of requesting a service guide that can be supported in the home NW from the visited NW to the home NW in order to continue using the specific content service of the home NW in the visited NW. Through the operation of this embodiment, the user updates the service guide from the home NW, and the content selected in the updated service guide is also delivered from the home NW.

As shown in FIG. 4, when the user moves from the home NW to the visited NW and roaming occurs, the user requests a broadcast service or a service guide from the visited NW's BSA. At this time, whether to request a broadcast service or a service guide is determined according to whether the user was using the broadcast service before roaming.

Before providing the broadcast service, the BSM of the visiting NW receives a request for a broadcast service or a service guide from the BSA through internal communication, and performs an authentication procedure for checking the authority of the BSM and the user (roaming subscriber) of the home NW.

However, since the subscription information for the broadcasting service of the user, that is, information on which service or service bundle the user subscribed to exists in the home NW, the BSM of the visited NW requests the user's subscription information to the BSM of the home NW. Perform user authentication. The BSM is an entity that manages subscriber information on which broadcast service a subscriber subscribes to, and may exist in a broadcast server or as a separate entity. In addition, the BSM of the visiting NW requests a service guide to the home NW to exchange information between the BSM of the home NW and the BSM of the visiting NW.

Once the user's authority is authenticated, the service guide is requested from the visiting NW to the home NW. In this case, the request for BCAST service delivered to the BSA of the home HW is delivered to the BSA of the home NW. When the service guide is requested, the home NW transmits the service guide to the visited NW through IP tunneling between the home NW and the visited NW. At this time, the BSA of the home NW delivers service attributes such as the characteristics of various programs, broadcasters, and broadcasting times to the broadcast service distribution & adaptation (BSDA) of the home NW. Delivers the service guide to the user terminal.

After receiving the service guide, the user selects one of several programs or services in the service guide and requests the content of the program or service to the BSA of the visiting NW, and the request is delivered to the BSA of the home NW.

Therefore, the home NW receives the content from the content generating object and transmits the content to the terminal through IP tunneling between the home NW and the visited NW. Then, the billing information for the content is exchanged between the home NW and the visited NW, which is internally delivered from the BSA of the home NW that delivered the actual content to the BSM, and the BSM of the home NW is delivered to the BSM of the visited NW.

The broadcast service providing method according to the present invention can be applied not only to roaming between broadcast networks in which BDSs are identical, but also to roaming between broadcast networks in which BDSs are different.

In this case, the terminal supports dual mode, and both the BDS of the home NW and the visited NW support a broadcast service, but the BDS of the home NW and the BDS of the visited NW are different from each other. That is, the two networks have different networks such as digital video broadcasting (DVB), multimedia broadcast multicast service (MBMS), and digital multimedia broadcasting (DMB). In this case, since the broadcast service provided by the visited NW provides content from the home NW to the visited NW only for the user terminal, the service provided by the visited NW is an interaction channel of the broadcast network of the visited NW only for the user terminal. Even if it is provided using.

The detailed procedure for the BDS to be provided by the visited NW in another visited NW is the same as that of FIG. 4, and a detailed description thereof will be omitted.

5 illustrates a procedure for receiving a service provided by the home NW through a mobile communication network when the network of the visited NW where the user is located is not a network providing a broadcast service (general GSM or CDMA that does not provide a broadcast service). will be. This embodiment is used when the terminal user wants to receive a broadcast service through the Unicast method of the visited NW even if the broadcasted service is not provided by the visited NW.

Referring to FIG. 5, since the mobile communication network (GSM, CDMA), which is represented as a wireless network, does not have a network for providing a broadcast service, the mobile communication network (GSM, CDMA) is provided from a home NW through a packet switched network of its mobile communication network. Deliver the received content to the user terminal

First, when a user moves from a home NW to a non-broadcast mobile communication network (GSM or CDMA) that is a visited NW, roaming occurs, the user requests a broadcast service from the visited NW. The visiting NW performs an authentication procedure for checking the authority of the BSM and the user (roaming subscriber) of the home NW before providing the broadcast service.

When the user authentication is completed, the visiting NW requests a service guide to the BSA of the home NW, and the BSA of the home NW forwards service attributes to the BSDA of the NW. Accordingly, the BSDA generates a service guide according to the service attributes and transmits the service guide directly to the terminal through IP tunneling between the home NW and the visited NW.

After receiving the service guide, the user selects a specific program or service in the service guide and requests the content of the program or service to the visiting NW, and the request is delivered to the BSA of the home NW.

Therefore, the BSA of the home NW forwards the content request to the BSDA, and the BSDA receives the content directly from the content generating object and transmits the content to the terminal through IP tunneling between the home NW and the visited NW. In this case, since the mobile communication network does not have a network for providing the BCAST service, the mobile communication network transmits the content received from the home NW to the user terminal through a packet switched network of the mobile communication network. That is, the content is delivered 1: 1 through the unicast method between the BCAST server and the user terminal, and the network used is transmitted through the channel of the data service provided by the cellular network rather than the BDS.

In this case, when the audio / video codec supported by the broadcasting network and the audio / video codec provided by the cellular network coincide with each other, appropriate modifications are necessary. For example, in the case of supporting MPEG4 and the cellular network does not support MPEG4, but supports MPEG2, the content received from the broadcasting network is decoded, re-encoded into MPEG2, and delivered to the user terminal. In this case, a procedure for exchanging content coding methods supported by the broadcasting network and content encoding methods supported by the cellular network may be provided together. In addition to the content encoding method, if the capability of the user terminal (for example, the supported codec, data rate, and the resolution of the terminal screen) is known in advance in the home NW, the corresponding information is transmitted to the visited NW. Can be used to make appropriate modifications before delivering the content received from the home NW to the user terminal.

Then, the billing information for the content is exchanged between the home NW and the visited NW, which is internally delivered from the BSA of the home NW that delivered the actual content to the BSM, and the BSM of the home NW is delivered to the BSM of the visited NW.

As described above, the present invention provides a BCAST system and a method capable of receiving a broadcast service in a corresponding network when roaming to a homogeneous or heterogeneous network, so that a user can continuously receive a broadcast service preferred by the user regardless of location. It has an effect.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (43)

A content generating object providing content for a broadcast service; A first network providing a service guide to a request network when a broadcast service request signal is input from an external network, and providing corresponding content to a user terminal when a content request signal of a subscriber is input; The first network and the user authentication procedure according to the roaming user request signal, and delivers the service guide to the subscriber terminal, and a second network for delivering the broadcast content to the subscriber terminal in accordance with the content request signal of the subscriber terminal; BCAST service system, characterized in that. The method of claim 1, wherein the request signal BCAST service system, characterized in that the signal for requesting a broadcast service or broadcast service guide. The method of claim 1, wherein the first and second networks BCAST service system, characterized in that the broadcast network. The method of claim 1, wherein the second network, BCAST service system, characterized in that the broadcast distribution system (BDS) is the same or different broadcast type network. The method of claim 4, wherein the EDS is BCAST service system comprising DVB-H, MBMS, BCMCS, ISDB-T and T / S-DMB. The method of claim 3, wherein the broadcast network is A BSA (Broadcast Service Application) for receiving a content from the content generating object and providing a broadcast service to a user; A Broadcast Service Distribution (BSD) that performs BCAST services, interfaces, and scheduling functions to provide a broadcast service through a specific bearer; BCAST service system comprising a Broadcast Distribution System (BDS) or IN (Interaction Network) for performing the interactivity for distributing the broadcast service and performing two-way communication. The method of claim 6, wherein the BSA is When a roaming user requests a broadcast service or a service guide, a service guide is provided to a user terminal, and the BSA performs a user authentication procedure with a home network. The method of claim 1, wherein the first network is And a second network is a wireless network that does not provide a broadcast service. The method of claim 8, wherein the broadcast network is BCB service system, characterized in that the network providing services such as DVB-H, MBMS, BCMCS, ISDB-T and T / S-DMB, the wireless network is a GSM or CDMA network. The method of claim 3, wherein the broadcast network is A BSA (Broadcast Service Application) for receiving a content from the content generating object and providing a broadcast service to a user; BSDA (Broadcast Service Distribution / Adaptation) for performing BCAST service, interface and contents, and scheduling function for providing a broadcast service through a specific bearer; BSM (Broadcast Subscription Management) for maintaining service / content protection management function and user subscription information; BCAST service system comprising a Broadcast Distribution System (BDS) or IN (Interaction Network) for performing the interactivity for distributing the broadcast service and performing two-way communication. The method of claim 10, wherein the BSM is When a roaming user requests a broadcast service or a service guide, the service attribute information serviceable in the network is transmitted to the BSDA, and the BSDA generates the service guide according to the service attribute and delivers the service guide to the user terminal. The service guide generated in the BSDA in claim 11 BCAST service system, characterized in that it may be different from the service guide generated in the BSDA of the first network. Requesting, by a terminal user, a broadcast service by roaming from a first network to a second network; The second network exchanging information with the first network to perform user authentication; Transmitting a service guide from a network to a user terminal when user authentication is completed; BCAST service method comprising the step of providing the corresponding content in response to a broadcast content request of the terminal user. The method of claim 13, wherein the first and second networks are BCAST service method, characterized in that the broadcast distribution system (BDS) is the same broadcast type network. The method of claim 14, wherein the BDS is BCAST service system comprising DVB-H, MBMS, BCMCS, ISDB-T and T / S-DMB. The method of claim 13, wherein the service guide BCAST service system, characterized in that generated in the first network and delivered to the subscriber station. The method of claim 13, wherein the service guide BCAST service system, characterized in that generated in the second network and delivered to the subscriber station. The method of claim 13, wherein the service guide BCAST service system, characterized in that the same as the service guide of the first network. The method of claim 13, wherein the service guide The service guide generated according to the service attributes of the second network, BCAST service system, characterized in that different from the service guide of the first network. Requesting a broadcast service by roaming from a first network to a second network by a user; The second network exchanging information with the first network to perform user authentication; Requesting a service guide to a first network when the user authentication is completed; Delivering, by the first network, a service guide to a roaming user; Selecting a program or service in the delivered service guide, and the roaming user receiving a broadcast service from the first network. The method of claim 20, wherein the first and second networks are BCAST service method, characterized in that the broadcast distribution system (BDS) is the same broadcast type network but provide different programs. The method of claim 20, wherein the BDS is BCAST service method comprising DVB-H, MBMS, BCMCS, ISDB-T and T / S-DMB. The method of claim 20, wherein the first and second networks are BCAST service method, characterized in that the broadcast distribution system (BDS) is a different broadcast type network. The method of claim 20, wherein the service guide BCAST service method, characterized in that delivered to the terminal through the IP tunneling between the first and second networks. The method of claim 20, wherein the first network is A broadcast type network providing a broadcast service, and the second network is a BCAST service method, characterized in that the wireless network does not provide a broadcast service. The network of claim 25, wherein the broadcast network is BCB service method for providing services such as DVB-H, MBMS, BCMCS, ISDB-T and T / S-DMB, wherein the wireless network is a GSM or CDMA network. Requesting, by a roaming subscriber station, a broadcast service or a broadcast service guide from a broadcast service distribution (BSD) of a visited network; BSD of the visited network authenticates a user's authority with BSD of a home network; Delivering a service guide to a user terminal by a BSD of the visited network; Selecting a desired service from the service guide received by the terminal user and delivering the desired service to the BSA of the visited network; And transmitting, by the BSA, broadcast service contents for the selected broadcast service list to a user terminal. 28. The method of claim 27, wherein the broadcast service request is BCAST service method characterized by being delivered to the BSA through BSD. 28. The home network of claim 27, wherein the home network and the visited network are BCAST service method, characterized in that the broadcast distribution system (BDS) is the same broadcast type network. The method of claim 29, wherein the BDS is BCAST service method comprising DVB-H, MBMS, BCMCS, ISDB-T and T / S-DMB. Requesting, by a roaming subscriber station, a broadcast service or a broadcast service guide to a broadcast service application (BSA) of a visited network; (B) broadcasting subscription management (BSM) of the visiting network exchanging information with the BSM of the home network to authenticate a user's authority; Transmitting a service guide to a user terminal by a BSDA (Broadcast Service Distribution / Adaptation) of the visited network if the user authority is authenticated; Selecting a desired service from the service guide received by the terminal user and delivering the desired service to the BSA of the visited network; BCSA service method comprising the step of delivering the broadcast service content for the selected broadcast service list to the user terminal of the BSA of the visited network. 32. The method of claim 31, wherein the broadcast service request is BCAST service method characterized in that it is delivered to the BSM through the internal communication. 32. The home network of claim 31, wherein the home network and the visited network are BCAST service method, characterized in that the broadcast distribution system (BDS) is the same broadcast type network. The method of claim 33, wherein the BDS is BCAST service method comprising DVB-H, MBMS, BCMCS, ISDB-T, T / S-DMB. Requesting, by a roaming user terminal, a broadcast service or a broadcast service guide to a broadcast service application (BSA) of a visited network; (B) broadcasting subscription management (BSM) of the visiting network exchanging information with the BSM of the home network to authenticate a user's authority; Requesting a service guide from the visited network BSA to the BSA of the home network if the user authority is authenticated; Delivering a service guide supported by BSDA of the home network to a user terminal; Selecting a desired service from the service guide received by the terminal user and delivering the desired service to the BSA of the home network through the BSA of the visited network; And transmitting, by the BSA of the home network, the broadcast service contents for the selected broadcast service list to a user terminal. 36. The home network of claim 35, wherein the home network and the visited network are BCAST service method, characterized in that the broadcast distribution system (BDS) provides the same but different programs. 37. The home network of claim 36, wherein the home network and the visited network are BCAST service method, characterized in that the broadcast distribution system (BDS) is a different broadcast type network. The method of claim 37, wherein the BDS is BCAST service method comprising DVB-H, MBMS, BCMCS, ISDB-T and T / S-DMB. The method of claim 35, wherein the user terminal BCAST service method, characterized in that the terminal supporting the dual mode. Requesting, by a roaming subscriber station, a broadcast service or a broadcast service guide to a visited network; The visited network exchanging information with a broadcast subscription management (BSM) of a home network to perform user authentication; Requesting a service guide from the visited network to the BSA of the home network if the user is authenticated; Delivering a service guide supported by BSDA of the home network to a user terminal; Selecting a content desired by a terminal user from the received service guide and delivering the content to a visited network; Requesting, by the visiting network, to the BSA of the home network, the selected content; And BSDA of the home network delivers the selected broadcast service to a content user terminal. 41. The network of claim 40 wherein the visited network is BCAST service method characterized in that the GSM or CDMA network does not provide a broadcast service. 41. The method of claim 40, wherein the user terminal BCAST service method, characterized in that the terminal supporting the dual mode. 41. The broadcast content of claim 40, wherein the broadcast content delivered to the user terminal by the home network is BCAST service method characterized in that the transmission through the unicast (Unicast) method between the broadcast server and the subscriber station.

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