KR100690341B1 - Broadcasting System for full-duplex Digital Multimedia Broadcasting service and Method thereof - Google Patents

Abstract

The present invention relates to a bidirectional digital multimedia broadcasting (DMB) system and a method for providing a bidirectional digital multimedia broadcasting service. In the bidirectional digital multimedia broadcasting system using a high speed information channel, a high speed information channel of a transmission frame of a program to provide a bidirectional broadcasting service is provided. Transmit the transmission frame including the link data in the data field of the fast information block (FIB) constituting the (FIC), and at least as a link data extension for identifying a bidirectional broadcast service among the extensions of the reserved fast information block. A digital multimedia broadcasting transmitting station that sets one or more to designate the link data extension as an extension of a fast information block including the link data; And a digital multimedia broadcasting reception terminal providing an interactive broadcasting service according to the link data when it is determined that the extension of the fast information block of the received transmission frame is the link data extension.

Description

Interactive Digital Multimedia Broadcasting System and Full-duplex Digital Multimedia Broadcasting Service and Method

1 is a diagram showing the structure of a typical DMB transmission frame.

FIG. 2 is a diagram illustrating a detailed configuration of the FIB in FIG. 1. FIG.

3 shows a user application according to an extension in type 5;

4 is a diagram showing a structure of link data according to the present invention included in a FIG data field in a DMB transmission frame.

FIG. 5 is a flowchart for briefly explaining a DMB data transmission method using link data as shown in FIG. 4.

The present invention relates to a digital multimedia broadcasting (DMB) service, and more particularly, to a fast information data channel (FIC) of a fast information channel (FIC) in a transmission frame of a terrestrial DMB. The present invention relates to a method of transmitting information in a bidirectional DMB service that makes it possible to easily implement a real-time bidirectional service using the FIDC) standard.

Recently, as digital audio equipments with excellent sound quality such as CD and DVD have been rapidly spread and popularized, the demand of listeners for digital broadcasting requiring high quality sound is increasing day by day, and thus the limitation of sound quality that existing FM broadcast can provide To overcome, Digital Audio Broadcasting (DAB) is being implemented in Europe, Canada, and the United States. This DAB system uses technology that is completely different from the current AM and FM broadcasts to show not only high quality sound quality but also excellent reception performance on the go, and it can transmit digital data such as video and text at high speed. have. Recently, various multimedia services including video rather than audio broadcasting are emphasized and called digital multimedia broadcasting (DMB). DMB is an advanced system that not only provides users with fully digitized information, but also has various applications in terms of quality and quantity.

The receiver of the DMB is PC (PC) -card type, home audio type, automotive, etc., and is divided into terrestrial DMB using terrestrial broadcasting and satellite DMB using satellite in the terrestrial broadcasting station according to the nature of the medium as a transmission means.

In particular, DMB has been in the spotlight in terms of convergence of broadcasting and communication, and there are advantages in that it is possible to implement various types of two-way broadcasting services by using a broadcasting channel as a downlink channel and a communication channel as an uplink channel. In order to implement the interactive broadcasting service, terrestrial DMB is adopted as a standard of MPEG-4 Binary Format for Scenes (BIFS) which is a part of the MPEG-4 system and performs graphic data interaction. The MPEG-4 system standard integrates and manages and transmits various multimedia objects such as audio, video, and images. BIFS is a technology language that allows to specify the display method and characteristics of these objects and to compose a scene.

However, the BIFS standard of the MPEG-4 system is a technology implemented to operate in a PC environment, and a mobile terminal such as a mobile phone or a PDA, which has significantly limited resources such as arithmetic processing capacity, memory capacity, and power capacity, compared to a PC environment. Due to the difficulty in smoothly processing BIFS, there is a problem in that it is impossible to provide a bidirectional broadcasting service through a mobile terminal. In addition, since the BIFS standard is applicable only to a video service of MPEG-4 format, there is a problem that bidirectional broadcasting cannot be implemented in an audio service or a data transmission service through a DMB. Lastly, in order to implement the BIFS method, BIFS information must be included in the MPEG-4 format that enables bidirectional service in a video program. Therefore, when retransmitting a video program of another format, for example, an analog method, the bidirectional method is required. There is a problem that broadcasts cannot be implemented.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and is used in an extension of a fast information block (FIB) constituting a fast information channel (FIC) of a transport frame in a DMB transport frame. By implementing at least one or more of the reserved extensions as an application for the link data and including the data for the bidirectional broadcasting service in the data field of FIG designated as the link data, BIFS is implemented in a portable DMB terminal. It is possible to receive two-way broadcasting service without complicated operation for processing, and to enable two-way broadcasting service in audio service and data transmission service as well as video service, and MPEG-4 type video program including BIFS in DMB broadcasting transmission system. Even if not simply fast It is an object of the present invention to provide a bidirectional digital multimedia broadcasting system and a bidirectional digital multimedia broadcasting service providing method capable of easily providing a bidirectional broadcasting service by a simple method of including link data in a fast information block of an information channel.

According to a preferred embodiment of the present invention, the link data further includes an application identification field specifying various kinds of applications, such as to support up-links through various methods such as SMS, MMS, voice call or URL access. Accordingly, an object of the present invention is to provide a bidirectional digital multimedia broadcasting system and a bidirectional digital multimedia broadcasting service providing method capable of enhancing the participation and interest of viewers by providing various kinds of interactive broadcasting services according to the characteristics of a broadcasting program.

According to another embodiment of the present invention, when the SMS or MMS is specified as the application identification field, the user can easily participate in the broadcast via SMS or MMS when the viewer participates while watching the DMB broadcast, and the interactive digital. Another object of the present invention is to provide a multimedia broadcasting service providing method.

According to another embodiment of the present invention, when a voice call is designated as an application identification field, the user may directly connect a call to the corresponding phone number even if the user does not know the telephone number of the broadcasting station or broadcast program related company while watching the DMB broadcast. Another object of the present invention is to provide a bidirectional digital multimedia broadcasting system and a method for providing a bidirectional digital multimedia broadcasting service which can increase convenience.

According to another embodiment of the present invention, when designating a URL connection as an application identification field, a user can easily access a promotional web page, a related information web page, a home shopping web page, etc. related to a broadcast program while watching a DMB broadcast. Another object of the present invention is to provide a broadcasting system and a method for providing a two-way digital multimedia broadcasting service.

According to another embodiment of the present invention, when a DMB data channel is designated as an application identification field, a bidirectional digital multimedia broadcasting system and a bidirectional digital multimedia, which allow a user to easily change a channel to another DMB data channel associated with viewing a DMB broadcast. Another object is to provide a broadcast service providing method.

According to another embodiment of the present invention, when the phone number auto-save advertisement is designated as the application identification field, the advertisement number of the company can be enhanced by automatically storing the phone number of the company associated with the broadcast program in the phone book of the viewer's terminal. Another object of the present invention is to provide a bidirectional digital multimedia broadcasting system and a method for providing a bidirectional digital multimedia broadcasting service.

Finally, according to another embodiment of the present invention, by including the activation time field and the end field in the link data, a two-way broadcast service synchronized with the broadcast program currently being broadcast without complex configuration such as time stamp synchronization used in BIFS. Another object of the present invention is to provide a bidirectional digital multimedia broadcasting system and a method for providing a bidirectional digital multimedia broadcasting service.

In order to achieve the above object, the bidirectional digital multimedia broadcasting system according to the present invention comprises a high speed information channel (FIC) of a transmission frame of a program to provide a bidirectional broadcasting service in a bidirectional digital multimedia broadcasting system using a high speed information channel. The transmission frame is transmitted by including link data in a data field of a fast information block (FIB), and at least one link data extension for identifying a bidirectional broadcast service is used among extensions of the reserved fast information block. A digital multimedia broadcasting transmitter which designates the link data extension as an extension of a fast information block including the link data; And a digital multimedia broadcasting reception terminal providing an interactive broadcasting service according to the link data when it is determined that the extension of the fast information block of the received transmission frame is the link data extension.

In the bidirectional digital multimedia broadcasting method using a fast information channel according to the present invention, data of a fast information block (FIB) constituting a fast information channel (FIC) of a transmission frame of a program for which a digital multimedia broadcasting broadcasting station provides a bidirectional broadcast service is provided. A fast information block including the link data by transmitting the transport frame including link data in a field, and setting at least one of link data extensions for identifying a bidirectional broadcast service among extensions of the fast information block reserved for use. A first step of designating the link data extension as an extension of; A second step of receiving and decoding the transmission frame by a digital multimedia broadcasting receiving terminal; A third step of the digital multimedia broadcasting receiving terminal determining whether an extension of the fast information block of the received transmission frame is the link data extension; And a fourth step of providing a bidirectional broadcasting service according to the link data when the digital multimedia broadcasting receiving terminal finds a fast information block having the link data extension.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention, the operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, whereby The spirit and operation of the invention are not limited.

The bidirectional digital multimedia broadcasting system and a broadcasting service providing method according to the present invention are characterized by transmitting link data necessary for bidirectional broadcasting using a fast information channel (FIC). The high speed information channel (FIC) will be described below.

1 is a diagram illustrating a structure of a general DMB transmission frame.

The DMB transmission frame includes a synchronization channel, a fast information channel (FIC), and a main service channel (MSC). Each fast information channel is composed of Fast Information Blocks (FIBs), and each main service channel is composed of a plurality of Common Interleaved Frames (CIFs). The main service channel (MSC) includes a plurality of audio data (Radio 1, Radio 2, Radio 3, Radio 4) and a plurality of non-audio data and service information (SI). It carries control information necessary to interpret the composition of the main service channel (MSC). In this case, each of the capacities of the fast information channel (FIC) may be used for transmission of additional information, the fast information data channel (FIDC), and each of the fast information channel (FIC) and the main service channel (MSC). The number of fast information blocks (FIBs) and CIFs to be determined in accordance with < RTI ID = 0.0 >

FIG. 2 is a diagram illustrating a detailed configuration of a fast information block (FIB) in FIG. 1.

Each fast information block (FIB) is further composed of Fast Information Groups (FIGs). One high-speed information block is composed of 256 bits, of which data can enter 240 bits, that is, 30 bytes. The fast information group (FIG) entering the fast information block (FIB) is divided into a FIG header and a FIG data field. Therefore, the length of FIG may not exceed 30 bytes including a header. In Eureka-147, which is currently used in Europe, the fast information group (FIG) uses five types out of eight available types, and each FIG type can be extended by type. have.

3 illustrates Type 5 illustrating a user application according to an extension. As shown, in Type 5, three extensions 0, 1, and 2 are allocated applications of paging, TMC, and Emergency Warning System (EWS), respectively, and corresponding application fields (3, 4, 5, 6) corresponding to the remaining extensions. (7) are reserved for future use, and there are extensions that are reserved for other types as well.

According to the present invention, in each fast block group (FIG) type in the fast information block (FIB) constituting the fast information channel (FIC), at least one of the fields not currently defined as shown in FIG. 3 is used as link data. After the definition, the link data is inserted into the FIG data field.

4 is a diagram illustrating a structure of link data according to the present invention included in a FIG data field in a DMB transmission frame.

The fast information group (FIG) is composed of a FIG header and a FIG data field, and the header is composed of a 3-bit FIG extension and a 5-bit length. If a particular fast information group (FIG) is to be used as link data according to the present invention, the FIG extension designates and uses any one of the currently reserved extensions. For example, in the case of type 5, one of 011, 100, 101, 110, and 111 is designated and used as a link data extension for bidirectional broadcasting.

When the FIG data field is used as link data, the link data includes a service channel field (service_CH), an application identification field (app_ID), an activation time field (active_period), a link path field (link_path), and a pop-up message field (pop-up). up_msg) and an end field (FIN).

The service channel field (service_CH) is a field for designating a broadcast channel for which link data is to be used and may define and use each channel according to a channel operation policy of a DMB broadcasting station operating by multiplexing a plurality of broadcast channels. For example, a DMB station using two video channels and one audio channel may define video 1, video 2, and audio 1 as 1, 2, and 3 of the service channel field (service_CH), respectively. have. The digital multimedia broadcasting receiving terminal determines whether the corresponding link data is used by comparing the channel information currently viewed by the user with the information included in the service channel (servece_CH) of the link data.

The application identification field app_ID includes information indicating a corresponding application or component of the digital multimedia broadcasting reception terminal to perform the interactive broadcasting service. That is, when each application or component serviced by the digital multimedia broadcasting receiving terminal is defined as below and transmitted from the digital multimedia broadcasting transmitting station to the digital multimedia broadcasting receiving terminal, the digital multimedia broadcasting receiving terminal compares this to drive the application of the link data. do. An example configuration of the application identification field app_ID is as follows.

SMS application ?? One

MMS application ?? 2

Voice call application ?? 3

Network browser application ?? 4

DMB Data Channel Application 5

Phonebook application ?? 6

…

For example, when the application identification field (app_ID) of the received link data is 1, when the viewer selects a bidirectional broadcast service, the digital multimedia broadcasting receiving terminal prepares for the viewer to send an SMS text message by driving the SMS application.

The active time field active_period outputs an indicator indicating that a bidirectional broadcast service is being provided by a DMB broadcast program currently being broadcast, and includes information on a total time for the user to select a bidirectional broadcast service. For example, according to an activation time field (active_period), a function that can be adjusted to maintain a bidirectional broadcast service during a broadcast program or to activate only at a specific time zone is provided.

The link path field link_path includes data such as a reply number and a URL of the corresponding application. In other words, the SMS reply number, MMS reply number, voice call reply number, access URL information, DMB data channel access link data (TBD), phone book storage number (for automatic phone number saving advertisement, etc.) Information may be included.

The pop-up message field pop-up_msg includes message content for an interactive broadcast service. For example, a pop-up message includes message content such as "Live Music Camp Select your favorite song. OOO 1, XXX 2".

The end field fin indicates whether link data is terminated. For example, 1 means to end this frame, and 0 means to continue to the next frame.

FIG. 5 is a flowchart for briefly explaining a DMB data transmission method using link data as shown in FIG. 4.

First, when a digital multimedia broadcasting station transmits DMB data including A / V broadcasting and additional data for a DMB broadcasting service, the DMB module of the DMB receiver receives the DMB data to perform FFT (Fast Fourier Transform) and time and Reverse interleaving is performed in the frequency domain (step 11). At this time, the digital multimedia broadcasting transmitting station transmits a transmission frame including link data in a data field of a fast information block (FIB) constituting a fast information channel (FIC) of a transport frame of a program to provide a bidirectional broadcast service. As described above, at least one or more link data extensions for identifying a bidirectional broadcast service among extensions of fast information blocks reserved for use are set to designate link data extensions as extensions of fast information blocks including link data.

Next, the DMB module of the digital multimedia broadcasting receiving terminal decodes the fast information channel (FIC) among the received transmission frames (step 12) to determine whether the extension of the received fast information block (FIB) is a link data extension (step 13).

At this time, if the link data is not included, it is regarded as not providing a bidirectional broadcasting service, and the main service channel (MSC) including audio / video (A / V) data and service information (SI) is immediately decoded (step 14). Decode the audio / video data included in the main service channel (MSC) (step 15).

As a result of the determination in step 13, if the received DMB data includes link data, the link data included in the fast information channel (FIC) is transmitted to the CDMA baseband chip (CDMA BB) of the digital multimedia broadcasting receiving terminal (step 16). At this time, the data included in the MSC is processed through steps 14 and 15 as described above.

The CDMA baseband chip which has received the link data of the format as shown in FIG. 4 decodes the received link data (step 17) and provides a bidirectional broadcast service according to the decoded link data.

The CDMA baseband chip compares the service channel information of the decoded link data with the channel information currently being viewed to determine whether the received link data is data corresponding to the service currently being viewed by the user (step 18).

In this case, the link data may further include an application identifier field (app_ID) for selecting an application to drive the interactive broadcast service and a link path field (link_path) including reply information to which the selected application should connect.

The configuration and detailed operation of the link data for each bidirectional broadcasting service are as follows.

When the interactive broadcast service to be implemented is a message uplink through SMS or MMS (Multimedea Message Service), the digital multimedia broadcasting transmitting station designates an SMS or MMS application as an application identification field (app_ID), and as a link path field (link_path). The transmission frame including the reply phone number of the SMS or MMS is transmitted, and the digital multimedia broadcasting receiving terminal runs the SMS or MMS application when the user executes the two-way broadcasting service in response to the reception of the link data. It receives the input and sends a text message or multimedia message to the reply telephone number of the link path field (link_path).

If the two-way broadcast service to be implemented is a call connection, the digital multimedia broadcasting transmitting station designates a voice call application by the application identification field (app_ID) and transmits a transmission frame including the voice call reply phone number by the link path field (link_path). When the user executes the two-way broadcast service in response to the reception of the link data, the digital multimedia broadcasting reception terminal runs a voice call application to set up a call as a reply telephone number in the link path field (link_path).

When the bidirectional broadcasting service to be implemented is a network connection, the digital multimedia broadcasting broadcasting station designates a network browser application in an application identification field (app_ID), transmits a transmission frame including access URL information in a link path field (link_path), When the user executes the bidirectional broadcasting service in response to the reception of the link data, the digital multimedia broadcasting receiving terminal drives the communication network browser application to connect to the access URL.

When the bidirectional broadcast service to be implemented is DMB data channel switching, the digital multimedia broadcasting broadcasting station designates a DMB receiving application by an application identification field (app_ID), and transmits a frame by including access DMB channel information by a link path field (link_path). The digital multimedia broadcasting receiving terminal, when the user executes the bidirectional broadcasting service according to the reception of the link data, drives the DMB receiving application to switch to the access DMB channel.

When the interactive broadcast service to be implemented is an automatic phone number storing advertisement, the digital multimedia broadcasting broadcasting station designates a phone book application as an application identification field (app_ID) and includes phone number information to be stored as a link path field (link_path). The transmission frame is transmitted, and the digital multimedia broadcasting receiving terminal stores the telephone number to be stored by driving the phonebook application when the user executes the bidirectional broadcasting service according to the reception of the link data.

As described above, the bidirectional digital multimedia broadcasting service system and a broadcasting service providing method according to an embodiment of the present invention comprise a fast information block (FIB) constituting a fast information channel (FIC) of a transmission frame in a DMB transmission frame. : A simple method of designating at least one or more of the extensions reserved for use in the extension of a fast information block) as an application for link data and including data for a bidirectional broadcast service in a data field of FIG designated as the link data. By implementing the two-way broadcast service, it is possible to receive the two-way broadcast service without complicated operation for BIFS processing in the portable DMB terminal, and to enable the two-way broadcast service not only in the video service but also in the audio service and the data transmission service. BI in the system Even if the MPEG-4 video program including the FS is not included, the interactive broadcast service can be easily provided by simply including link data in the fast information block of the fast information channel.

In an interactive digital multimedia broadcasting service system and a broadcasting service providing method according to a preferred embodiment of the present invention, the link data further includes an application identification field that specifies various types of applications, for example, SMS, MMS, voice call, or URL access. By supporting up-links through various methods, such as providing various kinds of two-way broadcasting services according to the characteristics of broadcasting programs, it is possible to enhance the participation and interest of viewers.

In the interactive digital multimedia broadcasting service system and a broadcasting service providing method according to an exemplary embodiment of the present invention, when SMS or MMS is designated as an application identification field, a user may easily participate in broadcasting through SMS or MMS when a viewer participates during DMB broadcasting. It provides the effect of making it possible.

In the bidirectional digital multimedia broadcasting service system and a broadcasting service providing method according to an exemplary embodiment of the present invention, when a voice call is designated as an application identification field, a user does not know a telephone number of a broadcasting station or a broadcasting program related company while watching a DMB broadcast. It allows users to connect a call directly to a number, thereby increasing the convenience of the user.

In an interactive digital multimedia broadcasting service system and a broadcasting service providing method according to an exemplary embodiment of the present invention, when a URL connection is specified as an application identification field, a user may view a promotional webpage, a related information webpage, It provides an effect that can be easily accessed to a home shopping web page.

In the bidirectional digital multimedia broadcasting service system and a broadcasting service providing method according to an exemplary embodiment of the present invention, when a DMB data channel is designated as an application identification field, a user can easily change a channel to another DMB data channel associated with watching DMB broadcasting. Provide the effect of doing so.

In the interactive digital multimedia broadcasting service system and a broadcasting service providing method according to an exemplary embodiment of the present invention, when a phone number auto-save advertisement is designated as an application identification field, a telephone directory of a terminal of a viewer is automatically inputted to a telephone number of a company associated with a broadcasting program. By storing it in the store, it provides an effect that can increase the advertising effect of a company.

Finally, the bidirectional digital multimedia broadcasting service system and the broadcasting service providing method according to the embodiment of the present invention include an activation time field and an end field in the link data, so that the present invention can be performed without complex configuration such as time stamp synchronization used in BIFS. There is an effect that can provide a two-way broadcast service synchronized with the broadcast program on the air.

Claims (25)

In the interactive digital multimedia broadcasting system using a high speed information channel, In the data field of the fast information block (FIB) constituting the fast information channel (FIC) of the transport frame of the program to provide a bidirectional broadcast service, including the link data to transmit the transmission frame, the reserved information of the fast information block A digital multimedia broadcasting transmitting station, wherein the link data extension is designated as an extension of a fast information block including the link data by setting at least one of link data extensions for identifying a bidirectional broadcast service among the extensions; And And if it is determined that the extension of the fast information block of the received transmission frame is the link data extension, a digital multimedia broadcasting receiving terminal for providing an interactive broadcasting service according to the link data. system. The method of claim 1, wherein the link data, And an application identifier field for selecting an application for driving the interactive broadcasting service. The method of claim 2, wherein the link data, And a link path field containing reply information to which the selected application should connect. The method of claim 3, wherein The link data, if the bidirectional broadcast service is a message uplink via SMS, the application identification field specifies an SMS application, and the link path field consists of a reply telephone number of the SMS; The digital multimedia broadcasting receiving terminal, when the user executes a two-way broadcasting service according to the reception of the link data, runs the SMS application to receive a text input from the user and transmit a text message to the reply telephone number. A two-way digital multimedia broadcasting system. The method of claim 3, wherein The link data, if the bidirectional broadcast service is a message uplink via MMS, the application identification field specifies an MMS application, and the link path field consists of a return telephone number of the MMS; The digital multimedia broadcasting receiving terminal, when the user executes a two-way broadcasting service according to the reception of the link data, runs the MMS application, receives the multimedia data from the user, and transmits the multimedia message to the reply telephone number. Interactive digital multimedia broadcasting system, characterized in that. The method of claim 3, wherein The link data, when the two-way broadcast service is a call connection, the application identification field designates a voice call application, the link path field is composed of a voice call return phone number, The digital multimedia broadcasting receiving terminal, when the user executes a two-way broadcasting service in response to the reception of the link data, runs the voice call application and sets a call to the call back number. system. The method of claim 3, wherein The link data, when the bidirectional broadcast service is a network connection, the application identification field specifies a network browser application, the link path field is configured with access URL information, The digital multimedia broadcasting reception terminal, when the user executes a two-way broadcasting service according to the reception of the link data, drives the network browser application and connects to the access URL. The method of claim 3, wherein The link data, when the bidirectional broadcast service is a DMB data channel switch, the application identification field designates a DMB receiving application, and the link path field is configured with access DMB channel information, The digital multimedia broadcasting receiving terminal, when the user executes a two-way broadcasting service according to the reception of the link data, driving the DMB receiving application, it is characterized in that switching to the access DMB channel, characterized in that the digital multimedia broadcasting system. The method of claim 3, wherein The link data, when the interactive broadcast service is a phone number auto store advertisement, the application identification field designates a phone book application, and the link path field consists of phone number information to be stored, The digital multimedia broadcasting receiving terminal, when the user executes a two-way broadcasting service in response to the reception of the link data, drives the telephone directory application to store the telephone number to be stored. . The method according to any one of claims 1 to 9, The link data further includes a service channel field for designating a broadcast channel to which the interactive broadcast service is to be provided. The method according to any one of claims 1 to 9, The link data may further include an activation time field for activating an indicator indicating that a bidirectional broadcasting service is provided on a display window of the digital multimedia broadcasting receiving terminal and setting a time for executing the bidirectional broadcasting service according to the user's selection. Interactive digital multimedia broadcasting system comprising a. The method according to any one of claims 1 to 9, The link data further includes a pop-up message field including a pop-up message to be displayed on a display window of the digital multimedia broadcasting receiving terminal. The method according to claim 1, wherein The link data further includes an end indication field indicating whether the link data is terminated. In the interactive digital multimedia broadcasting method using a high speed information channel, The digital multimedia broadcasting transmitting station transmits the transmission frame including link data in a data field of a fast information block (FIB) constituting a fast information channel (FIC) of a transmission frame of a program to provide a bidirectional broadcasting service, but is reserved. A first step of designating at least one or more link data extensions for identifying a bidirectional broadcast service among the extended fast information blocks and specifying the link data extensions as extensions of the fast information blocks including the link data; A second step of receiving and decoding the transmission frame by a digital multimedia broadcasting receiving terminal; A third step of the digital multimedia broadcasting receiving terminal determining whether an extension of the fast information block of the received transmission frame is the link data extension; And And providing a two-way broadcasting service according to the link data when the digital multimedia broadcasting receiving terminal finds a fast information block having the link data extension. Way. The method of claim 14, wherein the link data, And a link path field including an application identifier field for selecting an application to drive the interactive broadcast service and reply information to which the selected application should be connected. The method of claim 15, The first step may include: when the bidirectional broadcast service is a message uplink via SMS, designating an SMS application in the application identification field and transmitting a transmission frame including a reply phone number of the SMS in the link path field; In the fourth step, when the user executes a two-way broadcast service according to the reception of the link data, the SMS application is driven to receive a text input from the user and transmit a text message to the reply telephone number. Method for providing a two-way digital multimedia broadcasting service. The method of claim 15, The first step may include: when the bidirectional broadcast service is a message uplink through MMS, designating an MMS application in the application identification field, and transmitting a transmission frame including a return telephone number of the MMS in the link path field; In the fourth step, when the user executes a two-way broadcast service according to the reception of the link data, the MMS application is driven to receive the multimedia data from the user and transmit the multimedia message to the reply telephone number. Method for providing a two-way digital multimedia broadcasting service characterized in that. The method of claim 15, The first step may include: designating a voice call application in the application identification field and transmitting a transmission frame including a voice call return phone number in the link path field when the bidirectional broadcast service is a call connection; In the fourth step, when the user executes a two-way broadcasting service according to the reception of the link data, the two-way digital multimedia broadcasting service is provided by driving the voice call application and setting up a call using the reply telephone number. Way. The method of claim 15, The first step may include: when a bidirectional broadcast service is a network connection, designating a network browser application as the application identification field, and transmitting a transmission frame including access URL information in the link path field; In the fourth step, when the user executes a two-way broadcast service in response to the reception of the link data, the method of providing a two-way digital multimedia broadcasting service is characterized by driving the network browser application to connect to the access URL. The method of claim 15, The first step may include: when the bidirectional broadcast service is a DMB data channel switch, designating a DMB receiving application in the application identification field, and transmitting a transmission frame including access DMB channel information in the link path field; In the fourth step, when the user executes the bidirectional broadcast service according to the reception of the link data, the method of claim 2, wherein the DMB receiving application is driven to switch to the access DMB channel. The method of claim 15, The first step may include: designating a phone book application in the application identification field and transmitting a transmission frame including the phone number information to be stored in the link path field when the interactive broadcasting service is a phone number automatically stored advertisement; In the fourth step, when the user executes a two-way broadcasting service according to the reception of the link data, the telephone book application is driven to store the telephone number to be stored. . The method according to any one of claims 15 to 21, The first step may further include a service channel field for designating a broadcast channel for providing the interactive broadcast service as the link data, and transmits a transport frame. And the third step further determines whether a currently running channel matches the service channel field. The method according to any one of claims 15 to 21, In the first step, as the link data, an indicator indicating that a bidirectional broadcasting service is provided on a display window of the digital multimedia broadcasting receiving terminal is activated and sets a time for executing the bidirectional broadcasting service according to the user's selection. Transmitting a transmission frame further including an activation time field, In the fourth step, the indicator is displayed on the display window for a time set in the activation time field, and the interactive broadcast service providing method is activated. The method according to any one of claims 15 to 21, The first step may further include a pop-up message field including a pop-up message to be displayed on a display window of the digital multimedia broadcasting receiver terminal as the link data, and transmit a transmission frame. In the fourth step, the pop-up message of the pop-up message field is displayed on a display window. The method of claim 15, wherein The first step may further include a termination indication field indicating whether the link data is terminated as the link data to transmit a transmission frame. In the fourth step, if it is determined that the end indication field of the link data of the previously received transmission frame is not the end, the bidirectional broadcast service is maintained regardless of the determination of the third step. Method of providing digital multimedia broadcasting service.

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