KR101238781B1 - Method for UCC broadcasting and digital broadcasting retransmission using multicast scheme in portable internet - Google Patents

Abstract

The present invention provides a multicast transmission of user-generated content (UCC) broadcasting through a portable Internet (for example, a WiBro network) that supports multicast or a digital broadcasting (DTV, DMB broadcasting) to receive a multicast via the portable Internet. The UCC broadcasting and digital broadcasting retransmission method using the multicast method on the portable internet by retransmitting the cast, thereby increasing the usability of the portable internet and allowing digital broadcasting to be received through the portable internet even without a dedicated terminal for receiving digital broadcasting. To provide.

To this end, the present invention, the UCC receiving step of receiving the user-generated content (UCC) as unicast data from the content provider (CP) terminal; A data conversion step of converting the received UCC unicast data into multicast data; A portable internet broadcast step of broadcasting the UCC data converted in the data conversion step through a portable internet in a multicast manner; And receiving a bidirectional message from the content provider (CP) terminal or the viewer terminal currently receiving the UCC broadcast and converting it into multicast data to form a community between the content provider (CP) and the viewer terminal user. A bidirectional transmission step of broadcasting through.

Mobile Internet, WiBro, UCC Broadcasting, Digital Broadcasting, Multicast, Community

Description

Method for UCC broadcasting and digital broadcasting retransmission using multicast scheme in portable internet}

1 is a configuration diagram of an embodiment of a 'UCC broadcast' and 'digital broadcast retransmission' system using a multicast scheme on a portable Internet according to the present invention;

2 is a flowchart illustrating an embodiment of a UCC broadcasting method using a multicast scheme in a portable Internet according to the present invention;

3 is a flowchart illustrating a method for forming a community between a content provider (CP) and a viewer terminal user in the case of UCC broadcasting using a multicast scheme on a portable Internet according to the present invention;

4 is a flowchart illustrating an embodiment of a digital broadcast retransmission method using a multicast scheme in a portable Internet according to the present invention.

* Explanation of symbols on the main parts of the drawing

10: content provider (CP) terminal 11: mobile Internet

12: 'UCC broadcasting' and 'digital broadcasting retransmission' system 14: user viewer terminal

121: transcoder module 122: UCC transceiver module

124: bidirectional processing module 126: menu processing module

127: management module

The present invention relates to a UCC broadcast and a digital broadcast retransmission method using a multicast method on a mobile Internet, and more particularly, to a user-generated content (UCC) through a mobile Internet (for example, a WiBro network) that supports multicast. By multicasting broadcasts or receiving digital broadcasts (DTV and DMB broadcasts) and retransmitting them to multicasts via the mobile Internet, the usability of the mobile internet can be increased, and even if there is no dedicated terminal for receiving digital broadcasts, The present invention relates to a UCC broadcast and a digital broadcast retransmission method using a multicast method on a portable Internet.

In the conventional UCC (User Created Contents) community service on the wired Internet, since the user-registered contents are provided only through the unicast method using TCP, the server expansion and network due to the server load due to the network load and the usage increase Additional input of physical resources such as expansion was needed. In contrast, since the multicast method using the User Datagram Protocol (UDP) can transmit content from one sender to a plurality of receivers, one-to-many service is possible using this.

However, the conventional wired Internet has a structure in which multicast data cannot be introduced, thereby preventing multicast data from being introduced onto a network.

However, in a network such as WiBro, not only multicast data can be introduced, but also macro-diversity that can compensate for the loss of multicast data according to the IEEE 802.16e MBS standard. If the mobile Internet is used, it will be possible to provide a UCC broadcasting service transmitted through a unicast method as a multicast service.

On the other hand, in order to receive a digital broadcast such as conventional IPTV, DMB broadcast, there was a limitation that there must be a dedicated receiving terminal for this. Even in this case, if the digital broadcast data received from the outside is retransmitted through the portable Internet, the user side will be able to receive the digital broadcast via the portable Internet without a dedicated receiving terminal.

The present invention has been proposed to solve the above problems, and multicast transmission of user-generated content (UCC) broadcasting through a portable Internet (for example, WiBro network, etc.) or multicast (DTV, DMB) It is an object of the present invention to provide a UCC broadcast and a digital broadcast retransmission method using a multicast method on a portable Internet, which receives the broadcast and retransmits it to multicast through the portable Internet.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

The present invention for achieving the above object, in the user-generated content (UCC) broadcasting method using a multicast method on the portable Internet, UCC receiving the user-generated content (UCC) as unicast data from the content provider (CP) terminal Receiving step; A data conversion step of converting the received UCC unicast data into multicast data; A portable internet broadcast step of broadcasting the UCC data converted in the data conversion step through a portable internet in a multicast manner; And receiving a bidirectional message from the content provider (CP) terminal or the viewer terminal currently receiving the UCC broadcast and converting it into multicast data to form a community between the content provider (CP) and the viewer terminal user. A bidirectional transmission step of broadcasting through. In addition, the present invention, after performing the mobile Internet broadcasting step, the authentication for the user according to the access request from the user viewer terminal, if the authentication is successful, the user will receive the UCC broadcast transmitted in multicast The method further includes a connection information transmission step of transmitting the UCC broadcast access information to the viewer terminal of the user.

On the other hand, the present invention is a digital broadcast retransmission method using a multicast method on a mobile Internet, the method comprising: a broadcast signal receiving step of receiving a digital broadcast signal input from the outside; A data conversion step of generating the multicast data by encoding the received digital broadcast signal into a broadcast format on a portable Internet; A broadcast menu providing step of generating broadcast menu metadata on the multicast data converted in the data conversion step and providing the broadcast menu metadata to a viewer terminal; And a portable internet broadcasting step of broadcasting the multicast data converted in the data conversion step in a multicast manner through the portable internet. In addition, the present invention, by performing the authentication for the user in accordance with the access request from the viewer terminal, if the authentication is successful to the viewer terminal of the user so that the user can receive a digital broadcast transmitted in multicast The method may further include transmitting access information for transmitting broadcast access information.

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According to the present invention, (1) a TCP-based unicast service uses a Real Time Streaming Protocol (RTSP), a Real Time Transcoder Protocol (RTP), or the like to compress media data compressed in an H.264 video format. And (2) a UDP-based multicast service uses a method of transmitting media data compressed in an H.264 video format to MPEG2 Transport Stream (TS).

The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an embodiment of a community and entertainment service system using a multicast scheme on a portable Internet according to the present invention.

The content provider (CP) terminal 10 performs a function of initiating a unicast content broadcast and hosting a multicast broadcast in conjunction with a 'UCC broadcast' and a 'digital broadcast retransmission' system 12. Corresponds to a client equipped with a CP tool that can be manufactured and transmitted.

The viewer terminal 14 is a user terminal using a WiBro service, and receives a multimedia unicast reception, a multimedia multicast reception, and a user in conjunction with a 'UCC broadcast' and a 'digital broadcast retransmission' system 12. Corresponds to a client with an interactive service. If a user such as a WiBro PDA or PC terminal installs a CP tool on the terminal, the user corresponds to a content provider (CP) terminal 10, and if a viewer is installed, the viewer terminal 14 It corresponds to.

Meanwhile, the 'UCC Broadcast' and 'Digital Broadcast Retransmission' system 12 performs multimedia unicast service, multimedia multicast service, and interactive service relay between users by organically interworking with the client, and also performs a portable Internet backend. (Backend) Manages the service subscriber by interworking with the system 13. Here, the 'UCC broadcast' and 'digital broadcast retransmission' system 12 may be referred to as the 'UCC broadcast system' when the UCC broadcast using the multicast method is carried out on the portable Internet, and the digital using the multicast method is used on the portable Internet. In case of retransmission of the broadcast, it may be referred to as a 'digital broadcast retransmission system'.

Hereinafter, the 'UCC broadcast' and 'digital broadcast retransmission' system 12 will be described in detail.

First, the transcoder module 121 receives a digital broadcast A / V signal through an external IPTV, a DMB set top box, and encodes the video (encodes the video in H.264, the audio in the AAC +, etc.). To the multicast stream (MPEG2 TS) to the WiBro network.

The UCC transmission / reception module 122 receives a real-time UCC broadcast (video is encoded in H.264 and audio is encoded in AAC +, etc.) of a content provider (CP) through unicast to a user viewer (14). Send a multicast stream (MPEG2 TS).

The bidirectional processing module 124 relays text transmission and media transmission between users who are watching during UCC broadcasting. The data broadcasting module 123 transmits various information such as news / weather / traffic to a viewer terminal user through multicast.

The Video On Demand (VOD) delivery module 125 stores the non-real-time UCC content (video encoded in H.264, audio encoded in AAC +, etc.) of the content provider (CP) via the menu processing module 126. It registers with 128 and starts and transmits it to the viewer terminal as a unicast stream (RTSP / RTP).

The menu processing module 126 is a UCC real-time / non-real-time broadcasting menu to content provider (CP) or viewer terminal users, and digital broadcasting such as IPTV and DMB broadcasting, which are broadcast through the transcoder module 121. Provide a retransmission menu.

The management module 127 performs subscriber profile inquiry, authentication, and billing data transfer through interworking with the portable Internet back-end system 13. Here, the portable Internet back-end system 13 includes an authentication gateway 131, a subscriber information system 132, a CMS 133, and a charging gateway 134.

FIG. 2 is a flowchart illustrating a UCC broadcasting method using a multicast scheme in a portable Internet according to the present invention, in which a WiBro user 10 hosts a UCC broadcast using a CP tool and another WiBro user 14 ) Shows a process of receiving UCC broadcast multicast data through the UCC broadcast system 12 using a viewer.

Among the WiBro subscribers, the UCC multicast service subscriber, that is, a user who is determined to be an available user through the subscriber inquiry process and authentication of the mobile Internet back end system 13 through the management module 127, the CP terminal 10 When the user accesses the menu processing module 126 and inputs a UCC broadcasting time to apply for broadcasting menu registration (201), the menu processing module 126 creates a UCC broadcasting schedule (UCC broadcasting metadata) according to the input information. It stores in the database 128 (202), and notifies the CP terminal 10 that the UCC broadcast menu generation is completed (203).

Then, the CP terminal 10 requests the UCC broadcast transmission to the UCC transmitting and receiving module 122 (204). At this time, the UCC transmission and reception module 122 requests an inquiry to the management module 127 for authentication of the requested CP terminal user (205). Then, the management module 127 performs the authentication procedure according to the user authentication and availability confirmation request from the UCC transmission and reception module 122 and informs the result of the UCC transmission and reception module 122 (206).

The UCC transmission / reception module 122 notifies the CP terminal 10 of the user who has successfully authenticated the UCC broadcast permission (207).

The certified CP terminal 10 encodes an image (multimedia data to be broadcasted by the user) input through a softcam capturing tool or a webcam (video is encoded in H.264, and audio is encoded in AAC +) to UCC. When the UCC broadcast stream is transmitted to the transmit / receive module 122 in unicast (208), the UCC transmit / receive module 122 converts the input unicast data into multicast data (209) and binds the multicast to the network. The service is made (210). The UCC broadcast provided by the multicast service is transmitted to the WiBro network 11 through the router supporting the multicast, and becomes a viewable state.

The viewer terminal 14 requests to access a broadcast to be watched from the broadcast list received from the menu processing module 126 and connects the UCC to an IGMP (Internet Group Management Protocol) join through the corresponding UCC broadcast access information. You will watch the broadcast. In more detail, this process is as follows.

When the user terminal 14 requests a UCC broadcast menu browsing and connection request to the menu processing module 126 (211), the menu processing module 126 requests an authentication for the corresponding user to the management module 127. (212). Then, the management module 127 inquires the user authentication through the portable Internet backend system 13 (213), and notifies the authentication result to the menu processing module 126 (214).

The menu processing module 126 transmits UCC broadcast access information to the authenticated user viewer terminal 14 (215), and thus the user viewer terminal 14 multicasts through the UCC broadcast access information. The UCC broadcasting service is watched (216, 217).

3 is a flowchart illustrating a method for forming a community between a content provider (CP) and a viewer terminal user in the case of a UCC broadcast using a multicast scheme in a portable Internet according to the present invention. (Tool) and Viewer The following shows the process of transmitting and receiving interactive messages (Text / Media) between users.

When the CP terminal 10, which is the subject of UCC broadcasting, and the corresponding viewer terminal 141 of the user who is watching the UCC broadcasting 300 according to FIG. 2, are activated in a state capable of bidirectional service (301) 302) When the CP terminal 10 requests a multicast broadcast while transmitting an interactive message of text / media type to the interactive processing module 124 (303), the interactive processing module ( 124 converts the bidirectional message requested from the users into multicast data, binds 304, and transmits the bidirectional message to the user who is currently watching the UCC broadcast in a multicast manner (305, 306).

On the other hand, if another user 142 also makes a UCC broadcast menu browsing and access request and is thus authenticated as a legitimate subscriber (not shown in FIG. 3), UCC broadcast (multicast UCC transmitted through UCC broadcast access information) Broadcast) can be received (310).

In this case, when both the CP terminal 10 and the viewer terminals 141 and 142 are activated in a state capable of providing a bidirectional service, the user viewer terminal 141 moves to the bidirectional processing module 124. When a multicast broadcast is requested while transmitting an interactive message, the bidirectional processing module 124 converts the bidirectional message received from the user viewer terminal 141 into multicast data and binds it to the current UCC broadcast. In step 320, the user 10, 141, and 142 who are watching the video are transmitted in a multicast manner.

In addition, even when the user viewer terminal 142 requests a multicast broadcast while transmitting an interactive message to the interactive processing module 124, the user terminal 142 multicasts to the users 10, 141, and 142 according to the same process. In operation 330, the method is transmitted.

Therefore, users who are currently watching UCC broadcasts form a community through two-way data transmission of text / media type.

FIG. 4 is a flowchart illustrating a digital broadcast retransmission method using a multicast scheme in a portable Internet according to the present invention, wherein an IPTV / DMB provided by a WiBro user in a digital broadcast retransmission system 12 using a viewer is shown. A process of receiving retransmitted multicast data is shown.

When an analog broadcast signal (AV signal) such as IPTV / DMB is input in real time to the analog capture card of the transcoder module 121 from the broadcast receiver 120 (for example, a set-top box) (400) The transcoder module 121 encodes the real-time broadcast transmission format on the WiBro network (403) and then transmits the encoded data (multicast data) to the WiBro network (404). That is, the transcoder module 121 converts digital broadcast data into multicast data according to the MPEG-2 TS standard.

In this case, the management module 401 generates broadcast menu metadata with respect to broadcast data encoded by the transcoder module 121 and stores it in the database 128 in order to provide a menu to viewer users (401). Then, the menu processing module 126 reads the menu information through the database 128 to provide the users with the real time broadcasting schedule (402), so that the users select the provided real time broadcasting schedule to request the real time broadcasting. 405.

When the user terminal 14 requests a UCC broadcast menu browsing and connection request to the menu processing module 126 (405), the menu processing module 126 requests an authentication for the user to the management module 127. (406). That is, the menu processing module 126 requests the management module 127 to authenticate the user in order to check whether the user's service is available according to the user's menu selection (406).

Then, the management module 127 inquires the user authentication through the portable Internet backend system 13, and notifies the menu processing module 126 of the authentication result (407).

If the authentication is successful, the menu processing module 126 transmits the real time broadcast access information to the viewer terminal 14 of the user (408).

Thereafter, the viewer terminal 14 of the user who receives the real time broadcast access information from the menu processing module 126 transmits the multicast data (IPTV / DMB broadcast) transmitted by the transcoder module 121 through the real time broadcast access information. By receiving the data, it is possible to receive the IPTV / DMB broadcast (409).

The method of the present invention as described above may be embodied as a program and stored in a computer-readable recording medium (such as a CD-ROM, a RAM, a ROM, a floppy disk, a hard disk, or a magneto-optical disk). Since this process can be easily implemented by those skilled in the art will not be described in more detail.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

As described above, the present invention enables a WiBro user to author and register UCC contents using a CP tool, thereby enabling a WiBro user to become a subject of UCC broadcasting and a multicast one-to-many service as well as a unicast service. There is an effect that can be provided, and this also has the effect of activating the community (Community) and to provide a variety of entertainment (Entertainment) services.

In addition, the present invention has the effect of increasing the availability of the WiBro network by transmitting the UCC broadcast in a multicast via the portable Internet.

In addition, the present invention, by using a transcoder (transcoder) by retransmitting the existing IPTV, DMB broadcasts via multi-cast over the WiBro network, a WiBro user who does not have a dedicated terminal for receiving IPTV / DMB broadcasts can also receive IPTV, DMB broadcasts (Overcoming the limitations of a dedicated terminal), which makes the WiBro network more efficient.

Claims (13)

In the user-generated content (UCC) broadcasting method using a multicast method on the mobile Internet, A UCC receiving step of receiving user-generated content (UCC) as unicast data from a content provider (CP) terminal; A data conversion step of converting the received UCC unicast data into multicast data; A portable internet broadcast step of broadcasting the UCC data converted in the data conversion step through a portable internet in a multicast manner; And In order to form a community between a content provider (CP) and a viewer terminal user, a bidirectional message is input from the content provider (CP) terminal or a viewer terminal currently receiving a UCC broadcast, and converted into multicast data to convert the mobile Internet. Two-way transmission step to broadcast through UCC broadcasting method using a multicast method on the mobile Internet comprising a. The method of claim 1, After performing the portable internet broadcasting step, the user is authenticated according to the access request from the user viewer terminal, and if the authentication is successful, the user terminal can receive the UCC broadcast transmitted by multicast. Access information transmission step of transmitting the UCC broadcast access information to the UCC broadcasting method using a multicast method on the mobile Internet further comprising. delete 3. The method according to claim 1 or 2, The UCC receiving step, Receiving a broadcast time for user-generated content (UCC) that is a broadcast target from the content provider (CP) terminal, generating and storing corresponding broadcast metadata, and notifying the storage result; And Receiving UCC data transmitted in a unicast manner from the content provider (CP) terminal UCC broadcasting method using a multicast method on the mobile Internet comprising a. 5. The method of claim 4, The UCC receiving step, An authentication step of authenticating the subscriber of the content provider (CP) terminal to receive only the UCC data of the authenticated subscriber UCC broadcasting method using a multicast method on the mobile Internet further comprising. 3. The method according to claim 1 or 2, The data conversion step, And converting the received UCC unicast data into multicast data according to the MPEG-2 TS standard. 3. The method according to claim 1 or 2, The bidirectional transmission step, A bidirectional data reception step of receiving a bidirectional message from the content provider (CP) terminal; Converting the received bidirectional message into multicast data; And Transmitting the bidirectional message converted into the multicast data to a viewer terminal currently receiving the UCC broadcast in a multicast manner; UCC broadcasting method using a multicast method on the mobile Internet comprising a. 3. The method according to claim 1 or 2, The bidirectional transmission step, A bidirectional data reception step of receiving a bidirectional message from a viewer terminal currently receiving the UCC broadcast; Converting the received bidirectional message into multicast data; And Transmitting the bidirectional message converted into the multicast data in a multicast manner to another viewer terminal or a content provider (CP) terminal currently receiving a UCC broadcast; UCC broadcasting method using a multicast method on the mobile Internet comprising a. In the digital broadcast retransmission method using a multicast method on the portable Internet, A broadcast signal receiving step of receiving a digital broadcast signal input from the outside; A data conversion step of generating the multicast data by encoding the received digital broadcast signal into a broadcast format on a portable Internet; A broadcast menu providing step of generating broadcast menu metadata on the multicast data converted in the data conversion step and providing the broadcast menu metadata to a viewer terminal; And The portable Internet broadcasting step of broadcasting the multicast data converted in the data conversion step in a multicast manner through the portable Internet. Digital broadcast retransmission method using a multicast method on the mobile Internet comprising a. The method of claim 9, Performing authentication for the user according to the access request from the viewer terminal, and if the authentication is successful, access for transmitting broadcast access information to the viewer terminal of the user so that the user can receive the digital broadcast transmitted by multicast. Information transfer phase Digital broadcast retransmission method using a multicast method on the mobile Internet further comprising. 11. The method according to claim 9 or 10, The data conversion step, And converting the data of the received digital broadcast signal into multicast data according to the MPEG-2 TS standard. delete delete

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