KR20100092207A - System and method for setting channel structure of digital broadcasting, and network relay apparatus applied to the same - Google Patents

Abstract

PURPOSE: A system and a method for setting a channel structure of digital broadcasting, and a network relay apparatus applied to the same are provided to change a channel structure according to a transfer rate per channel and the number of local broadcasting channels, thereby providing a localized service in consideration of a characteristic per hot spot taking various digital contents types. CONSTITUTION: A broadcasting server(100) generates a channel structure information message corresponding to set channel information. A network relay device(200) changes a broadcasting transmitting channel structure based on the channel structure information message. A user terminal(300) changes a broadcasting receiving channel structure in the set broadcasting transmitting channel structure based on the channel structure information message. The user terminal receives broadcasting contents of the broadcasting server per channel through a changed broadcasting receiving channel.

Description

TECHNICAL AND METHOD FOR SETTING CHANNEL STRUCTURE OF DIGITAL BROADCASTING, AND NETWORK RELAY APPARATUS APPLIED TO THE SAME}

The present invention relates to a digital broadcasting channel structure setting method, and more particularly, to a digital broadcasting channel structure setting in which a digital broadcasting channel allocation method is variably applied according to a parameter including the number of digital broadcasting channels and a content transmission rate per channel. A system, a method thereof, and a network relay apparatus applied thereto.

Currently, conventional digital broadcasting channels such as terrestrial DMB and D-TV are being serviced in a fixed form in which the number of broadcasting channels and the transmission rate of contents per broadcasting channel are the same throughout the country.

In this regard, in short-range wireless communication broadcasting convergence technology (OuterNet) utilizing Industrial Scientific Medical (ISM) bands such as Wireless Personal Area Network (WPAN) / Wireless Local Area Network (WLAN), In order to broadcast content suitable for broadcasting, a broadcast channel allocation structure capable of accommodating various types of contents is required.

Through such short-range wireless communication broadcasting technology, a small regional owner, such as a restaurant, stadium, or shopping mall, can select a content and execute a private broadcasting service by itself.

The existing broadcast channel is a method of transmitting a broadcast program in accordance with a structure of a broadcast channel collectively arranged in a centralized broadcasting center, and has a technology structure in which the number of broadcasting channels and transmission rates per channel are set equally.

However, if the existing digital broadcasting standard is directly used as a standard for short-range private broadcasting service, the basic service can be provided only by changing the RF technology such as changing the center frequency. There is a limit to localized service considering the characteristics of).

The present invention was created to solve the problems inherent in the prior art as described above, and an object of the present invention is the content of the content and the number of simultaneous broadcast program channels to be broadcast within the physical limit transmission rate of the digital broadcast channel. Disclosed is a digital broadcast channel structure setting system and method for changing a channel structure variably according to a parameter including the same, and a network relay apparatus applied thereto.

According to an aspect of the present invention for achieving the above object, there is provided a digital broadcast channel structure setting system: the system, to set the channel information including the content and number of channels for each broadcast program channel, and corresponding to the set channel information A broadcast server generating and transmitting a channel structure information message; A network for changing and setting a broadcast transmission channel structure based on the channel structure information message received from the broadcast server, and transmitting the channel structure information message to a user terminal through a preset wireless access network with a user terminal to request a broadcast channel structure change. Relay device; And changing and setting a broadcast reception channel structure to correspond to the set broadcast transmission channel structure based on the channel structure information message received from the network relay apparatus, and broadcasting content for each channel transmitted from the broadcast server through the changed broadcast reception channel. It characterized in that it comprises a receiving user terminal.

Preferably, the network relay apparatus changes and sets the broadcast transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message.

Preferably, when the content type is real time content, the network relay apparatus allocates a slot designated in a contention free manner and non-real time. In the case of content, the broadcast transmission channel structure is set by allocating a slot designated in a contention based manner.

According to another aspect of the present invention, there is provided a network relay apparatus for establishing a digital broadcast channel structure, the apparatus comprising: a server connection portion forming a connection network with a broadcast server; A transport channel setting unit configured to change a broadcast transport channel structure by receiving a channel structure information message generated according to the content of each broadcast program channel and the number of channels through the server access unit from the broadcast server; A terminal connection unit forming a wireless access network with the user terminal based on the changed broadcast transmission channel; And a service relay unit which transmits the received channel structure information message to the user terminal through the terminal access unit to request a broadcast reception channel structure setting, and delivers the broadcast content for each channel received from the broadcast server to the user terminal. It features.

Preferably, the transport channel setting unit may change and set the broadcast transport channel structure according to the transmission rate and content type for each channel number included in the channel structure information message.

Preferably, the transmission channel setting unit, when the content type is real time content, allocates a slot designated in a contention free manner, and non-real time. In the case of content, the slot is designated in a contention based manner.

According to another aspect of the present invention, a user terminal for setting a digital broadcast channel structure is provided: the terminal presets a broadcast transport channel structure based on a channel structure information message generated according to content and number of channels for each broadcast program channel. A repeater connection unit forming a broadcast receiving channel based wireless access network with a network repeater; A reception channel setting unit configured to change and set the broadcast reception channel structure to correspond to the set broadcast transport channel structure based on the channel structure information message received from the network relay device through the relay device connection unit; And a service receiver for receiving broadcast content for each channel through the set broadcast reception channel.

Preferably, the reception channel setting unit changes and sets the broadcast reception channel structure to correspond to the broadcast transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. do.

Preferably, the reception channel setting unit, when receiving the channel structure information message according to the change of the broadcast channel structure during the reception of the broadcast content through the service receiving unit, characterized in that for resetting the broadcast receiving channel structure.

According to another aspect of the present invention, there is provided a channel structure setting method for digital broadcasting, comprising: channel information setting step of setting, by a broadcast server, channel information including content and number of channels for each broadcast program channel; A message generating step of generating and transmitting a channel structure information message corresponding to the set channel information by the broadcast server; A transport channel setting step of a network relay apparatus changing and setting a broadcast transport channel structure based on a channel structure information message received from the broadcast server; A change request step of the network relay apparatus requesting a broadcast channel structure change by transmitting the channel structure information message through a preset wireless access network with a user terminal; A reception channel setting step of changing and setting a broadcast reception channel structure so that the user terminal corresponds to the set broadcast transmission channel structure based on the channel structure information message received from the network relay apparatus; And a content reception step of receiving, by the user terminal, broadcast content for each channel through the set broadcast reception channel.

Preferably, the transmitting channel setting step may change and set the broadcasting transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message.

Preferably, when the content type is real time content, the network relay apparatus allocates a slot designated in a contention free manner and non-real time. In the case of content, the slot is designated in a contention based manner.

According to another aspect of the present invention, there is provided a channel structure setting method of digital broadcasting, the method comprising: receiving a channel structure information message generated according to content and channel number for each program channel from a broadcast server; A transport channel setting step of changing and setting a broadcast transport channel structure based on the received channel specific information message; A channel setting request step of transmitting a channel structure information message to a user terminal through a preset wireless access network and requesting a broadcast receiving channel structure setting to correspond to the set broadcast transmission channel structure; And a content delivery step of delivering content for each channel received from the broadcast server through the set broadcast transport channel.

Preferably, the transmitting channel setting step may change and set the broadcasting transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message.

Preferably, when the content type is a real time content, the transport channel setting step allocates a slot designated in a contention free manner and assigns a non-real time. In the case of content, the slot is designated in a contention based manner.

According to another aspect of the present invention, there is provided a method for setting a channel structure of digital broadcasting: The method includes previously setting a broadcast transport channel structure based on a channel structure information message generated according to content and number of channels for each broadcast program channel. A message receiving step of receiving the channel structure information message from a network relay apparatus; A reception channel setting step of setting a broadcast reception channel structure to correspond to the set broadcast transmission channel structure; And a content receiving step of receiving broadcast content for each channel through the set broadcast receiving channel.

Preferably, the receiving of the message may include receiving the channel structure information message according to a change in the structure of a broadcasting channel while receiving broadcast content.

Preferably, in the receiving channel setting step, the broadcast receiving channel structure is changed and set to correspond to the broadcasting transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. It is done.

According to the digital broadcasting channel structure setting system and method thereof, and the network relay apparatus applied thereto, the content and the number of simultaneous broadcasting channel contents to be broadcast within the physical limit transmission speed of the digital broadcasting channel are included. As the channel structure is changed variably according to parameters, when a broadcast service is to be performed in a private form using a near field wireless broadcasting technology, the broadcast service is directly changed without changing various content types existing on the web or PC. Can provide.

In addition, by varying the channel structure according to the number of broadcasting channels and transmission rates per channel, it is possible to provide a localized service considering characteristics of specific hot spots that accommodate various types of digital contents.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a schematic block diagram of a digital broadcast channel structure setting system according to an embodiment of the present invention.

As shown in FIG. 1, the system includes a broadcast server 100 that provides a channel-specific broadcast content and channel structure information message; A network relay apparatus 200 for changing a broadcast transmission channel structure based on the channel structure information message to form a relay network with the user terminal 300; And a user terminal 300 configured to change and set a broadcast reception channel structure based on the channel structure information message to receive broadcast content for each channel provided from the broadcast server 100.

The broadcast server 100 performs a series of operations for providing broadcast content such as program channel setting to be broadcast, content selection for each channel, and time scheduling. More specifically, the broadcast server 100 sets channel information including content and number of channels for each broadcast program channel, generates a channel structure information message corresponding to the set channel information, and transmits the generated channel structure information message to the network relay apparatus 200. . Here, the channel structure information message includes a program channel number, a transmission rate for each channel, and a content type for each channel, for example, a real time stream, a non-real time stream, a near real time, and the like. Includes information.

The network relay apparatus 200 refers to equipment for transmitting and receiving data wirelessly with the user terminal 300. The network relay apparatus 200 may correspond to a base station of a mobile telephone system, an access point (AP) of a wireless LAN system, and the like. Or broadcast to a user terminal 100 via a wireless access network connected to a PC or a USB external memory. More specifically, the network relay apparatus 200 changes and sets the broadcast transport channel structure based on the channel structure information message received from the broadcast server 100. That is, the network relay apparatus 200 changes and sets the broadcast transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. In this case, the network relay apparatus 200 allocates a slot designated in a contention free manner when the content type is real time content in order to consider a quality of service (QoS). In case of non-real time content, the broadcast transmission channel structure is set by allocating a slot designated in a contention based manner. In addition, the network relay apparatus 200 transmits the channel structure information message to the user terminal 300 through the preset wireless access network with the user terminal 300 according to a communication standard, thereby changing the broadcast channel structure, that is, receiving a broadcast. Request channel change setting.

The user terminal 300 refers to a device that receives a data through a connection with the network relay device 200 and receives a service. In general, the user terminal 300 receives and maps a broadcast channel transmitted through the network relay device 200. The program information (Electronic Program Guide) is analyzed and the service contents are displayed. More specifically, the user terminal 300 changes and sets the broadcast reception channel structure to correspond to the set broadcast transport channel structure based on the channel structure information message received from the network relay apparatus 200. That is, the user terminal 300 changes the broadcast reception channel structure to correspond to the broadcast transmission channel structure set in the network relay apparatus 200 according to the transmission speed and content type for each channel number included in the channel structure information message. do. Furthermore, the user terminal 300 receives broadcast content for each channel transmitted from the broadcast server 100 through the changed broadcast reception channel. Meanwhile, when a channel structure information message is received in response to a change in the broadcast channel structure while receiving broadcast content, the user terminal 300 resets the broadcast reception channel structure based on the corresponding channel structure information message.

As described above, according to the digital broadcast channel structure setting system according to an embodiment of the present invention, as a flexible broadcast program channel can be selected, a broadcast service in a private form using a near field wireless broadcast technology is to be performed. In this case, the broadcasting service can be provided without changing the various content types existing on the web or PC. In addition, by varying the channel structure according to the number of broadcasting channels and transmission rates per channel, it is possible to provide a localized service considering characteristics of specific hot spots that accommodate various types of digital contents.

Hereinafter, a detailed configuration of the network relay apparatus 200 according to an embodiment of the present invention will be described with reference to FIG. 2.

As shown in FIG. 2, the network relay apparatus 200 includes a server connection unit 210 that forms a connection network with the broadcast server 100; A transport channel setting unit 220 for changing and setting a broadcast transport channel structure; A terminal connection unit 230 forming a wireless access network with the user terminal; And a service relay unit 240 for transmitting data received from the broadcast server 100 to the user terminal 300. Through such a configuration, the network relay apparatus 200 receives a channel structure information message generated according to the content of each broadcast program channel and the number of channels from the broadcast server 100, changes the broadcast transmission channel structure, and sets a preset wireless access network. The channel structure information message is transmitted to the user terminal 300 through a request for setting a broadcast reception channel structure to correspond to the set broadcast transport channel structure.

In this regard, the transport channel setting unit 220 changes and sets the broadcast transport channel structure based on the channel structure information message received from the broadcast server 100 through the server access unit 210. That is, the transport channel setting unit 220 changes and sets the broadcast transport channel structure according to the transmission speed and content type for each channel number included in the channel structure information message. In this case, the transport channel setting unit 220 allocates a slot designated in a contention free manner when the content type is real time content in order to consider the quality of service (QoS). In case of non-real time content, the broadcast transmission channel structure is set by allocating a slot designated in a contention based manner.

In addition, the service relay unit 240 transmits the channel structure information message received from the broadcast server 100 to the user terminal 300 through the terminal access unit 210 and requests the broadcast reception channel structure setting. That is, the service relay unit 240 transmits the channel structure information message to the user terminal 300 through the preset wireless access network with the user terminal 300 according to a communication standard, thereby changing the broadcast channel structure, that is, receiving a broadcast. Request channel change setting. In addition, the service relay unit 240 relays the broadcast service by transmitting channel-specific broadcast content received from the broadcast server 100 to the user terminal 300 based on the set broadcast transmission channel.

As described above, according to the configuration of the network relay apparatus 200 according to an embodiment of the present invention, the channel structure is variably set according to the contents of content and the number of simultaneous broadcast program channels through interworking with the broadcast server 100. Can be.

Hereinafter, a configuration of a user terminal 300 according to an exemplary embodiment of the present invention will be described with reference to FIG. 3.

As shown in FIG. 3, the user terminal 300 includes a relay connection unit 310 forming a broadcast receiving channel based wireless access network with the network relay 200; A reception channel setup unit 320 for changing and setting a broadcast reception channel structure to correspond to the broadcast transmission channel structure; And a broadcast service receiver 330 for receiving a broadcast service transmitted through the network relay 200. Through such a configuration, the user terminal 300 receives the channel structure information message from the network relay apparatus 200 which has previously set the broadcast transmission channel structure based on the channel structure information message generated according to the content of each broadcast program channel and the number of channels. Received, and sets the broadcast receiving channel structure to correspond to the set broadcast transmission channel structure, and receives the broadcast content for each channel through the set broadcast receiving channel.

In this regard, the reception channel setting unit 320 changes and sets the broadcast reception channel structure to correspond to the set broadcast transmission channel structure based on the channel structure information message received from the network relay device through the relay connection unit 310. . More specifically, the reception channel setting unit 320 broadcast broadcast channel corresponding to the broadcast transmission channel structure set in the network relay apparatus 200 according to the transmission rate and content type for each channel number included in the channel structure information message. Change the structure. Meanwhile, when the channel structure information message is received in response to a change in the broadcast channel structure while receiving broadcast content, the reception channel setting unit 320 resets the broadcast reception channel structure based on the corresponding channel structure information message.

In addition, the service receiver 330 receives broadcast content for each channel through the set broadcast reception channel. That is, the service receiver 330 receives broadcast content for each channel transmitted from the broadcast server 100 through the broadcast receiving channel changed through the reception channel setting unit 320.

As described above, according to the configuration of the user terminal 300 according to the embodiment of the present invention, the application of a variable channel structure according to the content of content and the number of simultaneous broadcast program channels through interworking with the network relay device 200 may be applied. It is possible.

Hereinafter, a method of setting a digital broadcast channel structure according to an embodiment of the present invention will be described with reference to FIGS. 4 to 6. Here, for the convenience of description, the configuration shown in FIGS. 1 to 3 will be described with reference to the corresponding reference numerals.

First, an operation method of a digital broadcast channel structure setting system according to an embodiment of the present invention will be described with reference to FIG. 4.

First, the broadcast server 100 sets channel information including the content of each broadcast program channel and the number of channels (S110).

Thereafter, the broadcast server 100 generates and transmits a channel structure information message corresponding to the set channel information (S120-S130). Preferably, the broadcast server 100 may include a program channel number, a transmission rate for each channel, and a content type for each channel, for example, a real time stream, a non-real time stream, and a near real time. A channel structure information message including information such as Time) is generated and transmitted to the network relay device 200.

Then, the network relay apparatus 200 changes and sets the broadcast transmission channel structure based on the channel structure information message received from the broadcast server 100 (S140). Preferably, the network relay apparatus 200 changes the broadcast transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. In this case, the network relay apparatus 200 allocates a slot designated in a contention free manner when the content type is real time content in order to consider a quality of service (QoS). In case of non-real time content, the broadcast transmission channel structure is set by allocating a slot designated in a contention based manner.

Next, the network relay apparatus 200 transmits a channel structure information message received from the broadcast server 100 to request a change of the broadcast channel structure (S150). Preferably, the network relay apparatus 200 transmits the channel structure information message to the user terminal 300 through the preset wireless access network with the user terminal 300 according to a communication standard, thereby changing the broadcast channel structure, that is, broadcasting. Request to change receiving channel.

Then, the user terminal 300 changes and sets the broadcast reception channel structure to correspond to the set broadcast transport channel structure based on the channel structure information message received from the network relay apparatus (S160). Preferably, in other words, the user terminal 300 corresponds to the broadcast reception channel structure corresponding to the broadcast transmission channel structure set in the network relay apparatus 200 according to the transmission rate and content type for each channel number included in the channel structure information message. Change the structure. Meanwhile, when a channel structure information message is received in response to a change in the broadcast channel structure while receiving broadcast content, the user terminal 300 resets the broadcast reception channel structure based on the corresponding channel structure information message.

The user terminal receives broadcast content for each channel through the set broadcast reception channel (S170 to S180). Preferably, the user terminal 300 receives broadcast content for each channel transmitted from the broadcast server 100 through the changed broadcast reception channel.

As described above, according to the operating method of the digital broadcast channel structure setting system according to an embodiment of the present invention, as a flexible broadcast program channel can be selected, a broadcast service is provided in a private form using a short range wireless broadcast technology. When proceeding, it is possible to provide a broadcast service without changing the various content types existing on the web or PC. In addition, by varying the channel structure according to the number of broadcasting channels and transmission rates per channel, it is possible to provide a localized service considering characteristics of specific hot spots that accommodate various types of digital contents.

Hereinafter, an operation method of the network relay apparatus 200 for setting the digital broadcast channel structure will be described with reference to FIG. 5.

First, a channel structure information message generated according to the content of each broadcast program channel and the number of channels is received from the broadcast server 100 (S210-S230). Preferably, the transport channel setting unit 220 receives a channel structure information message received from the broadcast server 100 through the server connection unit 210.

Then, the broadcast transmission channel structure is changed and set based on the received channel specific information message (S240). Preferably, the transport channel setting unit 220 changes and sets the broadcast transport channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. In this case, when the content type is real time content in order to consider the quality of service (QoS), a slot designated by a contention free method is allocated and a non-real time is allocated. time) in the case of content, the broadcast transmission channel structure is set by allocating a slot designated in a contention based manner.

Then, the channel structure information message is transmitted to the user terminal 300 to request a broadcast reception channel structure setting to correspond to the set broadcast transport channel structure (S250-S260). Preferably, the service relay unit 240 transmits the channel structure information message received from the broadcast server 100 to the user terminal 300 through the terminal connection unit 210 and requests the broadcast reception channel structure setting. That is, the service relay unit 240 transmits the channel structure information message to the user terminal 300 through the preset wireless access network with the user terminal 300 according to a communication standard, thereby changing the broadcast channel structure, that is, receiving a broadcast. Request channel change setting.

Thereafter, the content of each channel is transmitted through the set broadcast transmission channel (S270-S300). Preferably, the service relay unit 240 broadcasts the broadcast service by transmitting the channel-specific broadcast content received from the broadcast server 100 to the user terminal 300 based on the set broadcast transmission channel.

As described above, according to the operation of the network relay apparatus 200 according to an embodiment of the present invention, the channel structure is variably changed according to the contents of content and the number of simultaneous broadcast program channels through interworking with the broadcast server 100. It is possible to.

Finally, an operation method of the user terminal 300 according to the communication service relay will be described with reference to FIG. 6.

First, the channel structure information message is received from the network relay apparatus 200 (S310-S320). Preferably, the reception channel setting unit 320 receives the channel structure information message transmitted from the network relay apparatus 200 which has previously set the broadcast transmission channel structure through the relay connection unit 310.

Then, the broadcast reception channel structure is set to correspond to the preset broadcast transport channel structure (S330). Preferably, the reception channel setting unit 320 corresponds to the broadcast transmission channel structure set in the network relay apparatus 200 according to the transmission speed and content type for each channel number included in the channel structure information message. Change the structure. Meanwhile, when the channel structure information message is received in response to a change in the broadcast channel structure while receiving broadcast content, the reception channel setting unit 320 resets the broadcast reception channel structure based on the corresponding channel structure information message.

Thereafter, broadcast contents for each channel are received through the set broadcast reception channel (S340-S360). Preferably, the service receiver 330 receives the broadcast content for each channel transmitted from the broadcast server 100 through the broadcast channel set changed through the reception channel setting unit 320.

As described above, according to the operation of the user terminal 300 according to the embodiment of the present invention, the application of the variable channel structure according to the content of the content and the number of simultaneous broadcast program channels through interworking with the network relay device 200 is performed. It is possible.

Although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above-described embodiments, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the following claims. Anyone skilled in the art will have the technical idea of the present invention to the extent that various modifications or changes are possible.

According to the digital broadcasting channel structure setting system and method thereof, and the network relay apparatus applied thereto, the flexible broadcasting program channel can be selected so that the broadcasting is performed without changing various content types. As it can be provided as a service, it overcomes the limitations of the existing technology, and thus the industrial availability is not only sufficient for the use of the related technology, but also the possibility of commercialization or sales of the applied device is not only sufficient, but also realistically feasible. This is an invention.

1 is a schematic configuration diagram of a digital broadcast channel structure setting system according to an embodiment of the present invention.

2 is a schematic configuration diagram of a network relay apparatus according to an embodiment of the present invention.

3 is a schematic structural diagram of a user terminal according to another embodiment of the present invention;

4 to 6 are flowcharts for explaining a digital broadcast channel structure setting method according to an embodiment of the present invention.

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

100: broadcast server

200: network repeater

210: server connection unit 220: transmission channel setting unit

230: terminal connection unit 240: terminal connection unit

300: user terminal

310: relay device connection unit 320: receiving channel setting unit

330: service receiving unit

Claims (18)

In the digital broadcast channel structure setting system, A broadcast server for setting channel information including content and number of channels for each broadcast program channel, and generating and transmitting a channel structure information message corresponding to the set channel information; A network for changing and setting a broadcast transmission channel structure based on the channel structure information message received from the broadcast server, and transmitting the channel structure information message to a user terminal through a preset wireless access network with a user terminal to request a broadcast channel structure change. Relay device; And The broadcast reception channel structure is changed and set to correspond to the set broadcast transmission channel structure based on the channel structure information message received from the network relay device, and the broadcast content for each channel transmitted from the broadcast server is received through the changed broadcast reception channel. Digital broadcast channel structure setting system comprising a user terminal. According to claim 1, The network relay device, And changing the broadcast transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. According to claim 2, The network relay device, If the content type is real time content, a slot designated in a contention free method is allocated, and in the case of non-real time content, contention based content is allocated. And setting the broadcast transmission channel structure by allocating a slot designated in a predetermined manner. In the network relay apparatus for setting the digital broadcast channel structure, A server connection unit forming a connection network with a broadcast server; A transport channel setting unit configured to change a broadcast transport channel structure by receiving a channel structure information message generated according to the content of each broadcast program channel and the number of channels through the server access unit from the broadcast server; A terminal connection unit forming a wireless access network with the user terminal based on the changed broadcast transmission channel; And And a service relay unit which transmits the received channel structure information message to the user terminal through the terminal access unit to request a broadcast reception channel structure setting, and delivers the broadcast content for each channel received from the broadcast server to the user terminal. Network relay. The method of claim 4, wherein the transmission channel setting unit, And changing and setting the broadcast transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. The method of claim 5, wherein the transmission channel setting unit, If the content type is real time content, a slot designated in a contention free method is allocated, and in the case of non-real time content, contention based content is allocated. The network relay device, characterized in that for assigning a slot designated in the manner. A user terminal for setting a digital broadcasting channel structure, A relay device connection unit for forming a broadcast reception channel-based wireless access network with a network relay device that has previously set a broadcast transmission channel structure based on the channel structure information message generated according to the content of each broadcast program channel and the number of channels; A reception channel setting unit configured to change and set the broadcast reception channel structure to correspond to the set broadcast transmission channel structure based on the channel structure information message received from the network relay device through the relay device connection unit; And And a service receiver configured to receive broadcast content for each channel through the set broadcast reception channel. The method of claim 7, wherein the receiving channel setting unit, And changing and setting the broadcast reception channel structure to correspond to the broadcast transport channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. The method of claim 7, wherein the receiving channel setting unit, And receiving the channel structure information message according to the change of the broadcast channel structure while receiving the broadcast content through the service receiver, resetting the broadcast receiving channel structure. In the channel structure setting method of digital broadcasting, A channel information setting step of setting, by the broadcast server, channel information including content for each broadcast program channel and channel number; A message generating step of generating and transmitting a channel structure information message corresponding to the set channel information by the broadcast server; A transport channel setting step of a network relay apparatus changing and setting a broadcast transport channel structure based on a channel structure information message received from the broadcast server; A change request step of the network relay apparatus requesting a broadcast channel structure change by transmitting the channel structure information message through a preset wireless access network with a user terminal; A reception channel setting step of changing and setting a broadcast reception channel structure so that the user terminal corresponds to the set broadcast transmission channel structure based on the channel structure information message received from the network relay apparatus; And And a content receiving step of receiving, by the user terminal, broadcast content for each channel through the set broadcast receiving channel. The method of claim 10, wherein the transport channel setting step, And changing and setting the broadcast transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. The network relay apparatus of claim 11, If the content type is real time content, a slot designated by a contention free method is allocated.If the content type is non-real time content, contention based content is allocated. A channel structure setting method for digital broadcasting, comprising assigning a slot designated in a predetermined manner. In the channel structure setting method of digital broadcasting, A message receiving step of receiving a channel structure information message generated according to the content of each broadcast program channel and the number of channels from a broadcast server; A transport channel setting step of changing and setting a broadcast transport channel structure based on the received channel specific information message; A channel setting request step of transmitting a channel structure information message to a user terminal through a preset wireless access network and requesting a broadcast receiving channel structure setting to correspond to the set broadcast transmission channel structure; And And a content delivery step of delivering content for each channel received from the broadcast server through the set broadcast transport channel. The method of claim 13, wherein the transport channel setting step, And changing the broadcast transmission channel structure according to the transmission rate and content type for each channel number included in the channel structure information message. The method of claim 14, wherein the transmission channel setting step, If the content type is real time content, a slot designated in a contention free method is allocated, and in the case of non-real time content, contention based content is allocated. A method of setting a channel structure of digital broadcasting, which allocates a slot designated in a predetermined manner. In the channel structure setting method of digital broadcasting, A message receiving step of receiving the channel structure information message from a network relay apparatus which has previously set a broadcast transmission channel structure based on the channel structure information message generated according to the content of each program channel and the number of channels; A reception channel setting step of setting a broadcast reception channel structure to correspond to the set broadcast transmission channel structure; And And a content receiving step of receiving broadcast content for each channel through the set broadcast receiving channel. The method of claim 16, wherein the message receiving step, And receiving the channel structure information message according to a change in the structure of a broadcasting channel while receiving broadcast content. The method of claim 16 or 17, wherein the receiving channel setting step, And changing and setting the broadcast reception channel structure to correspond to the broadcast transport channel structure according to the transmission rate and content type for each channel number included in the channel structure information message.

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