KR20060116052A - Method and system for selectively providing free or paid digital mulimedia service - Google Patents

Abstract

A method and a system for selectively providing a charged or free DMB(Digital Multimedia Broadcasting) service are provided to allow a receiving-side terminal to provide charged network/free network identification IDs capable of easily recovering an error although the error is generated in a DMB transmission frame in which the charged network/free network identification IDs are recorded. A charged DMB relay network(110) provides a DMB transmission frame in which a charged network identification ID is recorded to charged and free DMB terminals(200a,200b). A free network DMB relay network(310) provides a DMB transmission frame in which a network identification ID is not recorded to the charged and free DMB terminals(200a,200b). A mobile communication relay network(130) selectively provides a free network identification ID to the charged and free DMB terminals(200a,200b). When both the charged network identification ID and the free network identification ID exist, the charged and free DMB terminals(200a,200b) reproduce DMB services provided from all of the charged DMB relay network(110) and the free network DMB relay network(310). When both the charged network identification ID and the free network identification ID do not exist, the charged and free DMB terminals(200a,200b) reproduce only the DMB service provided from the free network DMB relay network(310).

Description

Method and system for selectively providing free or paid Digital Mulimedia Service

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

2 is a diagram illustrating a structure of an FIB.

3 shows the structure of a FIG type 0 data field.

4 is a diagram illustrating a structure of a service component trigger.

5 is a block diagram illustrating an embodiment for selectively providing a DMB service by dividing a paid DMB service subscriber and a non-subscriber according to the present invention.

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

100: mobile carrier 110: paid DMB relay network

130: mobile communication relay network 200a: paid DMB terminal

200b: free DMB terminal 300: broadcaster

310: Free DMB Relay Network

The present invention relates to a digital multimedia broadcasting (DMB) service, and in particular, a method for selectively providing a paid DMB service by distinguishing a user who subscribes to a paid DMB service and a user who does not subscribe to a terrestrial digital multimedia broadcasting. And to the system.

Recently, as digital audio equipments are widely used for excellent sound quality such as CD and DVD, the demand for listeners for digital broadcasting that demands high quality sound is increasing day by day, thus limiting the sound quality that existing FM broadcasting can provide. To overcome, Digital Audio Broadcasting (DAB) is being implemented in Europe, Canada and the United States. The DAB system uses a technology completely different from the current AM or FM broadcast to show not only high quality sound quality but also excellent reception performance on the go, and has a characteristic of transmitting 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).

Meanwhile, the DMB service is divided into a satellite DMB service and a terrestrial DMB service. Satellite DMB service provides DMB service nationwide through satellite, and provides DMB signal by installing a separate gap filler in the space such as subway where DMB signal from satellite cannot reach directly. To dramatically expand. Currently, a plan to provide satellite DMB service to users for a fee is being promoted.

In addition, terrestrial DMB service is provided through the broadcasting network of the existing broadcasting company, and it is planned to be provided to the public free of charge in the early stage of business preparation. However, since the terrestrial DMB service is provided through the existing broadcasting network, there is a problem that free terrestrial DMB service cannot be provided in an area such as a subway (that is, an astigmatism area) where terrestrial DMB signals cannot reach from the broadcasting network. Was done. In order to solve this problem, a mobile communication company to install a separate terrestrial DMB retransmission relay network in the astigmatism area, and the terrestrial DMB service provided through the retransmission relay network is being promoted to pay. Hereinafter, a DMB service provided for a fee is referred to as a "paid DMB service", a relay network providing the paid DMB service is referred to as a "paid network" or a "paid DMB relay network", and a free DMB service is provided as "free of charge." DMB service ", and the relay network that provides the free DMB service is called" free network "or" free DMB relay network ".

As such, when a part of the terrestrial DMB service is charged, a new problem arises in how to selectively provide the DMB service by distinguishing subscribers from subscribers and non-subscribers of the paid DMB service. .

That is, for the new problem, an identification ID for identifying a pay network and a free network using TII (Transmitter Identification Information), which may be selectively included in a synchronization channel of a DMB transmission frame (hereinafter, referred to as “pay network / free network identification” ID "), and only a paid DMB service subscriber can receive a paid DMB service using the identification ID.

However, once an error occurs during transmission in the synchronization channel of the DMB transmission frame, there is no way that the error on the synchronization channel can be recovered during processing after reception. Therefore, when the identification ID is recorded and transmitted in the sync channel portion, if an error occurs in the sync channel at the time of transmission, another problem occurs that the receiving terminal cannot properly read the identification ID recorded in the sync channel. .

The present invention is to solve the above problems, even if an error occurs in the DMB transmission frame in which the pay network / free network identification ID is recorded, the pay terminal / free network identification that the error can be easily recovered in the receiving terminal Its purpose is to provide a method for providing an ID and the like.

In order to achieve the above object, the present invention provides a method of transmitting an identification ID for a DMB relay network to a DMB terminal, wherein the first DMB relay network transmits a transmission frame in which the identification ID is recorded to the terminal, and a second DMB. The relay network provides a method of transmitting an identification ID, characterized by transmitting a transmission frame in which the identification ID is not recorded to the terminal.

In addition, to achieve the above object, the present invention provides a DMB service to a DMB terminal, in which a first DMB relay network transmits a transmission frame in which a first identification ID is recorded, and a second DMB relay network identifies an ID. Providing untransmitted transmission frames to the DMB terminal; Selectively providing, by the mobile communication network, a second identification ID to the DMB terminal; And if the DMB terminal has both the first identification ID and the second identification ID, provide the user with DMB services from both the first DMB relay network and the second DMB relay network; otherwise, the second DMB relay network. It provides a method for providing a DMB service comprising the step of providing only a DMB service from the user.

In addition, the present invention to achieve the above object, DMB terminal; A first DMB relay network providing the terminal with a DMB transmission frame recorded with a first identification ID; A second DMB relay network providing the terminal with a DMB transmission frame in which a network identification ID is not recorded; And a mobile communication relay network for selectively providing a second identification ID to the terminal, wherein the terminal has both a first DMB relay network and a second DMB relay network if both a first ID and a second ID are present. A DMB service providing system capable of reproducing a DMB service from a DMB service, and otherwise can reproduce only a DMB service from a second DMB relay network.

In order to achieve the above object, the present invention provides a mobile communication terminal capable of receiving a DMB service, the identification ID of the DMB relay network recorded on the service component trigger of the FIG data field according to extension 20 of the transmission frame. Provided is a mobile communication terminal that can be extracted and read.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically achieve the above object will be described.

First, referring to FIG. 1, a configuration of a transmission frame for a DMB service defined in ETSI EN 300 401 V1.3.3 (2005-05) published as a result of Eureka project 147 is described. Take a look.

As shown in FIG. 1, the DMB transport frame includes a main service channel (MSC), a fast information channel (FIC), and a synchronization channel.

The MSC is a channel used to carry video, audio, and data service components and is a time interleaved channel that is divided into a plurality of sub-channels that are individually convolutionally encoded. The configuration of sub-channels and service components is called a multiplex configuration.

In addition, the FIC is a channel used to allow a receiver to quickly access information, and transmits MCI (Multiplex Configuration Information) (optionally together with service information and data servie). Used. FIC is again divided into several Fast Inforamtion Blocks (FIBs), which are described in detail later.

Finally, the synchronization channel provides basic demodulator functions such as transmission frame synchronization, automatic frequency control, channel state estimation, and transmitter identification in the transmission system. Used to perform.

MSC and FIC of the transmission frame, unlike the synchronization channel, even if an error occurs during transmission, the error can be recovered in the processing process after reception.

2, the configuration of the above-described FIB will be described in detail.

As illustrated in FIG. 2, the FIB includes an FIB data field and a cyclic redundancy check (CRC). The FIB data field, in turn, consists of one or more FIG (Fast Information Group), end markers, and padding.

Here, FIG is composed of FIG header composed of FIG type and length, and FIG data field. The FIG type indicates the type of data recorded in the FIG data field, and the length indicates the length of the FIG data field. The list of FIG types is shown in Table 1 below.

FIG type number FIG type FIG application 0 000 MIC and part of the SI One 001 Labels, etc (part of the SI) 2 010 Reserved 3 011 Reserved 4 100 Reserved 5 101 FIC Data Channel 6 110 Conditional Access (CA) 7 111 In house (except for Length 31)

In the present invention, type 0 of the FIG types listed in Table 1 is of interest, and FIG data field according to FIG type 0 will be described with reference to FIG. 3.

FIG type 0 is used to indicate current and future multiplex configuration, multiplex re-configuration, time and date, and other basic service information.

The FIG type 0 data field includes an extension and a type 0 field as shown in FIG. 3. The extension is for identifying one of the 32 interpretations of the type 0 field.

In the present invention, the type 0 field according to the extension 20 is of particular interest, which will be described with reference to FIG. 4.

The type 0 field according to extension 20 is composed of a plurality of service component triggers (SCTs), as shown in FIG. 4. SCT is primarily used for data services, and especially for notifying specific receivers of the start / end of transmission of new services. Looking at the F3 flag and the service user group among the various configuration fields of the SCT, the F3 flag indicates whether the service user group field exists in the SCT, and the F3 flag is "0". If set to indicate that the service user group field does not exist in the SCT, and if the flag is set to "1" indicates that the service user group field exists in the SCT. Here, the service user group is used to identify the receiver that is the target of the new service.

The present invention selectively provides a paid DMB service by using the SCT F3 flag and a service user group to distinguish a user who has subscribed to a paid DMB service and a user who has not subscribed. A detailed embodiment thereof will be described in detail below with reference to FIG. 5.

The paid DMB relay network 110 includes mobile communication terminals 200a capable of receiving a DMB service from a transmission frame having an SCT in which the F3 flag is set to "1" and a first pay network identification ID is recorded in the service user group. 200b) (hereinafter referred to as "DMB terminal"). According to the current DMB service-related policy, the paid DMB relay network 110 will generally be operated by the mobile carrier 100.

In addition, the free DMB relay network 310 transmits a transmission frame having an SCT in which the F3 flag is set to "0", that is, a transmission frame having an SCT in which there is no service user group field and thus the first toll network identification ID cannot be recorded. It transmits to the terminals 200a and 200b. Therefore, the free DMB relay network 310 does not provide the network identification ID to the DMB terminals 200a and 200b. The free DMB relay network 310 will generally be operated by the terrestrial broadcaster 300.

In addition, the mobile communication relay network 130 of the mobile communication company 100 has a second paid network identification ID in the DMB terminal 200a (hereinafter referred to as a "paid DMB terminal") of the user who has subscribed to the paid DMB service. It does not provide this to the DMB terminal 200b (hereinafter, referred to as a "free DMB terminal") of a user who does not subscribe to the paid DMB service.

Meanwhile, the DMB terminals 200a and 200b may provide both the paid DMB service and the free DMB service to the user only when there is both the first pay network identification ID and the second pay network identification ID. That is, when only one or both of the first and second pay network identification IDs are not present, only the free DMB service is provided to the user.

In such an environment, a method of selectively providing a paid or free DMB service by dividing the paid DMB service subscribers and non-subscribers into three cases will be described below.

1) When the paid DMB terminal 200a is in the area of the paid DMB relay network 110

The paid DMB terminal 200a receives a DMB transmission frame (hereinafter referred to as a "paid DMB transmission frame") transmitted from the paid DMB relay network 110, and reads and extracts the first paid network identification ID therefrom. . In addition, the pay DMB terminal 200a receives the second pay network identification ID transmitted from the mobile communication relay network 130 as described above.

Accordingly, the paid DMB terminal 200a may have both the first paid network identification ID and the second paid network identification ID, and may provide the paid DMB service to the terminal user.

2) When the free DMB terminal 200b is in the area of the paid DMB relay network 110

The free DMB terminal 200b receives the paid DMB transmission frame, and reads and extracts the first paid network identification ID therefrom. However, as described above, the free DMB terminal 200b is not provided with the second pay network identification ID from the mobile communication relay network 130.

Therefore, since the free DMB terminal 200b cannot have both the first pay network identification ID and the second pay network identification ID, the free DMB terminal 200b cannot provide the paid DMB service to the terminal user.

3) When the paid (or free) DMB terminal 200a or 200b is in the free DMB relay network 310 area

The paid (or free) DMB terminal 200a or 200b does not need a network identification ID to provide a free DMB service. Accordingly, the DMB terminals 200a and 200b may freely provide a free DMB service to the terminal user regardless of whether the first pay network identification ID and / or the second pay network identification ID are received.

It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention. For example, in the above-described embodiment of the present invention, the paid DMB relay network provides the paid network identification ID and the free DMB relay network does not provide the identification ID. It can be easily inferred from the above description that the DMB relay network does not provide a network identification ID and the free DMB relay network is modified to provide a free network identification ID. In addition, the present invention may be usefully applied even when some of the satellite DMB services become free due to changes in the DMB policy currently being promoted.

Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

According to the present invention, the pay network / free network identification ID is further transmitted since the pay network / free network identification ID is transmitted using the FIC among the DMB transmission frames that can be recovered in the processing after the reception even if an error occurs during transmission. Can be sent to the DMB terminal correctly. In addition, according to the present invention, the DMB service can be selectively provided by dividing the terminal for the paid DMB and the terminal for the free DMB efficiently.

Claims (26)

In the method for transmitting the identification ID for the DMB relay network to the DMB terminal, The first DMB relay network transmits a transmission frame in which an identification ID is recorded to the terminal, and the second DMB relay network transmits a transmission frame in which the identification ID is not recorded to the terminal. . The method of claim 1, The first DMB relay network is a pay network, and the second DMB relay network is a free network. The method of claim 2, And the identification ID is a pay network identification ID for indicating that the first DMB relay network is a pay network. The method of claim 1, And the identification ID is recorded on a fast information channel (FIC) of the transport frame. The method of claim 4, wherein The FIC is composed of a plurality of fast information blocks (FIBs), The identification ID is recorded on an FIB data field of one of the plurality of FIBs. The method of claim 5, The data field of the FIB includes one or more FIG (Fast Information Groups), And the identification ID is recorded in the FIG data field of FIG with a type number of the FIGs equal to zero. The method of claim 6, The FIG data field is a FIG data field according to extension 20. And the identification ID is recorded in a type 0 field of the FIG data field. The method of claim 7, wherein The type 0 field includes one or more service component triggers, In the transmission frame by the first DMB relay network, the F3 flag of one of the service component triggers is set to "1", and the identification ID is recorded in the service user group of the one trigger, And the F3 flag is set to " 0 " in the transmission frame by the second DMB relay network, so that the identification ID is not recorded in the trigger. In the method for providing a DMB service to a DMB terminal, Providing, by the first DMB relay network, a transmission frame in which a first identification ID is recorded, and a transmission frame in which a second ID DMB relay network has not been recorded, to the DMB terminal; Selectively providing, by the mobile communication network, a second identification ID to the DMB terminal; And If the DMB terminal has both the first identification ID and the second identification ID, provide the user with the DMB service from both the first DMB relay network and the second DMB relay network; otherwise, from the second DMB relay network. Providing only the DMB service to the user; How to provide a DMB service comprising a. The method of claim 9, The first DMB relay network is a paid network and the second DMB relay network is a free network. The mobile communication relay network provides a DMB service, wherein the DMB terminal provides a second identification ID only to a DMB terminal subscribed to a paid DMB service. The method of claim 10, And the first identification ID is a pay network identification ID for indicating that the first DMB relay network is a pay network. The method of claim 9, And reading and extracting, by the terminal, a first identification ID from a transmission frame from a first DMB relay network. The method of claim 9, And the first identification ID is recorded on the FIC of the transmission frame from the first DMB relay network. The method of claim 13, The FIC is composed of a plurality of FIBs, And a first identification ID is recorded on an FIB data field of one of the plurality of FIBs. The method of claim 14, The FIB data field includes one or more FIGs, And a first identification ID is recorded in the FIG data field of FIG in which the type number of the FIGs is 0. The method of claim 15, The FIG data field is a FIG data field according to extension 20. The first identification ID is recorded in the type 0 field of the FIG data field. The method of claim 16, The type 0 field includes one or more service component triggers, The first DMB relay network provides a transport frame in which the F3 flag of one of the service component triggers is set to "1" and the identification ID is recorded in the service user group of the one trigger, And the second DMB relay network sets the F3 flag to " 0 " to provide a transport frame in which the identification ID is not recorded in the trigger. DMB terminal; A first DMB relay network providing the terminal with a DMB transmission frame recorded with a first identification ID; A second DMB relay network providing the terminal with a DMB transmission frame in which a network identification ID is not recorded; And  And a mobile communication relay network for selectively providing a second identification ID to the terminal. The terminal can play the DMB service from both the first DMB relay network and the second DMB relay network if there is both the first identification ID and the second identification ID, or the DMB from the second DMB relay network. DMB service providing system that can play only the service. The method of claim 18, The first DMB relay network is a paid network and the second DMB relay network is a free network. The mobile communication relay network provides a second identification ID only to the DMB terminal subscribed to the paid DMB service among the DMB terminal. The method of claim 19, The first identification ID is a DMB service providing system, characterized in that the paid network identification ID for indicating that the first DMB relay network is a paid network. The method of claim 19, The first identification ID is recorded on the FIC of the transmission frame from the relay network for the first DMB DMB service providing system. The method of claim 21, The FIC is composed of a plurality of FIBs, And a first identification ID is recorded on an FIB data field of one of the plurality of FIBs. The method of claim 22, The FIB data field includes one or more FIGs, The first identification ID is recorded in the FIG data field of FIG in which the type number of the FIGs is 0. The method of claim 23, wherein The FIG data field is a FIG data field according to extension 20. The first identification ID is recorded in the type 0 field of the FIG data field. The method of claim 24, The type 0 field includes one or more service component triggers, The first DMB relay network provides a transport frame in which the F3 flag of one of the service component triggers is set to "1" and the identification ID is recorded in the service user group of the one trigger, The second DMB relay network sets the F3 flag to "0" to provide a transport frame in which the identification ID is not recorded in the trigger. As a mobile communication terminal capable of receiving a DMB service, A mobile communication terminal capable of extracting and reading an identification ID for a DMB relay network recorded on a service component trigger of a FIG data field according to extension 20 of a transmission frame.

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