KR100710326B1 - Method and system for selectively providing free or paid Digital Mulimedia Service - Google Patents

Abstract

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. 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.

DMB, terrestrial, pay, free, broadcast

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 the structure of a user application field.

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 will be referred to as a "paid DMB service", and a relay network providing the paid DMB service will be referred to as a "paid network" or "paid DMB relay network", and a DMB service provided for free A "free DMB service" is referred to as a "free network" or a "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 for providing an identification ID for a DMB relay network to a DMB terminal, wherein the identification ID is recorded on a DMB transmission frame and provided to the terminal. It provides a method for providing an identification ID.

In order to achieve the above object, the present invention provides a DMB service to a DMB terminal, wherein the first DMB relay network comprises a DMB transmission frame in which a first identification ID is recorded, and a second DMB relay network is provided. Providing a DMB transmission frame in which an identification ID is recorded to the DMB terminal; Providing, by the mobile communication network, the terminal to both the third identification ID and the fourth identification ID, or to the fourth identification ID only; And if the terminal has a first identification ID and a third identification ID, provide the user with the DMB service from the relay network for the first DMB, and if there is a second identification ID and the fourth identification ID, the second DMB. Providing a DMB service from an intermediate relay network to 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 second identification ID is recorded; And a mobile communication relay network selectively providing both the third identification ID and the fourth identification ID, or the fourth identification ID to the terminal, wherein the terminal has a first identification ID and a third identification ID. A DMB service providing system for providing a DMB service from a first DMB relay network to the user and providing the user with a DMB service from a second DMB relay network if there is a second ID and a fourth ID. to provide.

In addition, to achieve the above object, the present invention provides a mobile communication terminal capable of receiving a DMB service, which can extract and read the identification ID recorded on the FIC of the DMB transmission frame in the transmission frame.

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

First, with reference to FIG. 1, the configuration of a transmission frame for a DMB service defined in ETSI EN 300 401 V1.3.3 (2005-05), which is published as a result of Eureka project 147, will be described. see.

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.

Unlike the sync channel, the MSC and the FIC in the transmission frame are characterized in that, even if an error occurs during transmission, the error can be recovered during processing 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. 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 13 is of particular interest, which will be described with reference to FIG. 4.

User application information allows data applications to be associated with the correct user application decoder by the receiver. Such user application information is encoded in a type 0 field according to extension 13 as shown in FIG. 4. The user application information includes one or more user applications, wherein the user application consists of a user application type, user application data length, and user application data. The user application type is as listed in Table 2 below.

As can be seen in Table 2, some user application types are reserved for future use. In the present invention, any one of the reserved application types is used for transmission of the paid / free network identification ID. That is, according to the present invention, any one of the application types suspended for use is selected and defined as a type for transmission of a paid network / free network identification ID, and the paid network identification ID or free for the user application of the selected application type. Record the network identification ID.

An implementation example for selectively providing a DMB service by distinguishing a paid DMB service subscriber and a non-subscriber using a transmission frame in which a pay network / free network identification ID as described above is recorded will be described with reference to FIG. 5.

As described above, the network providing the paid DMB service, that is, the paid DMB relay network 110 records the first paid network identification ID in the DMB transmission frame, and receives the DMB service. DMB terminals "(200a and 200b). According to the DMB service related policy currently being promoted, the paid DMB relay network 110 will generally be operated by the mobile communication company 100.

In addition, the network providing the free DMB service, that is, the free DMB relay network 310 records the first free network identification ID in the DMB transmission frame as described above, and transmits it to the DMB terminals 200a and 200b. . The free DMB relay network 310 will generally be operated by a terrestrial broadcaster 300.

The mobile telecommunication relay network 130 of the mobile communication company transmits the second pay network identification ID and the second free network identification ID to the DMB terminals 200a and / or 200b. Terminal 200 (hereinafter referred to as a "paid DMB terminal") 200a is provided with both a second paid network identification ID and a second free network identification ID, and a DMB terminal of a user who does not subscribe to the paid DMB service (hereinafter referred to as "pay DMB terminal"). 200b) is provided with only the second free network identification ID.

Meanwhile, the DMB terminals 200a and 200b must have both a first pay network identification ID and a second pay network identification ID in order to provide a paid DMB service to a user, and also provide a free DMB service to a user. It is configured to have both a first free network identification ID and a second toll network identification ID.

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 receives the DMB transmission frame transmitted from the free DMB relay network 310, and reads and extracts the first free network identification ID therefrom. The paid (or free) DMB terminal 200a or 200b receives the second free network identification ID transmitted from the mobile communication relay network 130 as described above.

Accordingly, the paid (or free) DMB terminal 200a or 200b has both a first free network identification ID and a second free network identification ID, and can provide a free DMB service to the terminal user.

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. In other words, the present invention can be usefully applied even when some of the satellite DMB services become free, for example, due to changes in DMB policies currently being implemented. 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 (25)

In the method for providing an identification ID for the DMB relay network to the DMB terminal, The identification ID is a type 0 field of a FIG (Fast Infrmation Group) data field according to extension 13 on FIB data fields of a plurality of fast information blocks (FIBs) of a fast information channel (FIC) of a DMB transmission frame. A method of providing an identification ID, characterized in that recorded in the. delete delete delete delete delete The method of claim 1, The type 0 field includes one or more user application information, the user application information includes one or more user applications, And wherein the identification ID is recorded in a user application having a preset type of application types reserved for future use. In the method for providing a DMB service to a DMB terminal, Providing, by the first DMB relay network, the DMB transmission frame in which the first identification ID is recorded, and the second DMB relay network, in which the second identification ID is recorded, the DMB transmission frame; Providing, by the mobile communication network, the terminal to both the third identification ID and the fourth identification ID, or to the fourth identification ID only; And If the terminal has a first identification ID and a third identification ID, the terminal provides a DMB service from the first DMB relay network to the user; and if the terminal has a second identification ID and a fourth identification ID, the second DMB relay network is provided. Providing a DMB service from the user; How to provide a DMB service comprising a. The method of claim 8, The first DMB relay network is a paid network, and the second DMB relay network is a free network. The method of claim 9, The mobile communication network provides the terminal with both the third identification ID and the fourth identification ID if the user of the terminal subscribes to the paid DMB service, and the fourth identification ID if the subscriber does not subscribe to the paid DMB service. How to provide DMB service. The method of claim 8, And reading and extracting, by the terminal, a first identification ID and / or a second identification ID from the received DMB transmission frame. The method of claim 8, The DMB transmission frame consists of a synchronization channel, FIC, and MSC, A first identification ID and a second identification ID are recorded on the FIC. The method of claim 12, The FIC is composed of a plurality of FIBs, And a first identification ID and a second identification ID are recorded on the FIB data field of one of the plurality of FIBs. The method of claim 13, The FIB data field includes one or more FIGs, And a first identification ID and a second identification ID are recorded in the FIG data field of FIG with a type number of zero among the FIGs. The method of claim 14, The FIG data field is a FIG data field according to extension 13. And a first identification ID and a second identification ID are recorded in the type 0 field of the FIG data field. The method of claim 15, The type 0 field includes one or more user application information, the user application information field includes one or more user applications, And the first identification ID and the second identification ID are recorded in a user application having a preset type of application types reserved for future use. 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 second identification ID is recorded; And  And optionally a mobile communication relay network providing both the third identification ID and the fourth identification ID or only the fourth identification ID to the terminal. If the terminal has a first identification ID and a third identification ID, the terminal provides a DMB service from the first DMB relay network to the user; and if the terminal has a second identification ID and a fourth identification ID, the second DMB relay network is provided. DMB service providing system for providing a DMB service from the user. The method of claim 17, The first DMB relay network is a paid network, and the second DMB relay network is a free network. The method of claim 18, The mobile communication network provides the terminal with both the third identification ID and the fourth identification ID if the user of the terminal subscribes to the paid DMB service, and the fourth identification ID if the subscriber does not subscribe to the paid DMB service. DMB service provision system. The method of claim 19, The DMB transmission frame consists of a synchronization channel, FIC, and MSC, And a first identification ID and a second identification ID are recorded on the FIC. The method of claim 20, The FIC is composed of a plurality of FIBs, And a first identification ID and a second identification ID are recorded on the FIB data field of one of the plurality of FIBs. The method of claim 21, The FIB data field includes one or more FIGs, The first identification ID and the second identification ID are recorded in the FIG data field of FIG in which the type number of the FIGs is 0. The method of claim 22, The FIG data field is a FIG data field according to extension 13. The first identification ID and the second identification ID are recorded in the type 0 field of the FIG data field. The method of claim 23, The type 0 field includes one or more user application information, the user application information field includes one or more user applications, And the first identification ID and the second identification ID are recorded in a user application having a preset type of application types reserved for future use. As a mobile communication terminal capable of receiving a DMB service, On a FIB data field of a plurality of fast information blocks (FIBs) of a fast information channel (FIC) of a DMB transmission frame, recorded in a type 0 field of a FIG (Fast Infrmation Group) data field according to extension 13 And an identification ID extracted from the transmission frame for reading.

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