KR20080056070A - Method for ucc broadcasting and digital broadcasting retransmission using multicast scheme in portable internet - Google Patents

Abstract

A method for retransmitting UCC(User Created Contents) broadcasting data and digital broadcasting data through the portable Internet according to a multicast scheme is provided to enable a WiBro user to take the initiative in providing a point-to-multipoint service as well as a unicast service by making and registering UCC using a CP(Contents Provider) tool. If a WiBro user accesses a menu processing module through a CP terminal, inputs UCC broadcasting time, and makes a broadcasting menu registration request(201), the menu processing module writes UCC broadcasting meta data according to the inputted information, stores them in a database, and notifies the CP terminal that UCC broadcasting menu creation has been completed(202,203). The CP terminal encodes inputted pictures and requests a UCC transceiver module to transmit the encoded pictures in unicast(204). At this moment, the UCC transceiver module requests a management module to authenticate the CP terminal user(205). The management module transmits a result to the UCC transceiver module after executing authentication procedures for the CP terminal user(206). If the result is positive, the UCC transceiver module notifies the CP terminal that UCC broadcasting is allowed(207). If the CP terminal sends a UCC broadcast stream to the UCC transceiver module in unicast(208), the UCC transceiver module converts the inputted unicast data into multicast data(209). Then, after binding, the UCC transceiver module starts a multicast service(210).

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 'BCC broadcast' and 'digital broadcast retransmission' system using a multicast scheme in a portable Internet according to the present invention;

2 is a flowchart illustrating an example of a BCC broadcasting method using a multicast scheme on 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 case of BCC 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 method of re-transmitting BCC and digital broadcasting using a multicast method on a mobile Internet, and more particularly, to 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 PCC retransmission method using a multicast method on a portable Internet and a computer readable recording medium recording a program for realizing the method.

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, server expansion and necessity due to server load due to network load and usage increase Additional input of physical resources such as work extension 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 digital broadcasts such as conventional IP TV, 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, Receiving DMB broadcasting) and retransmitting by multicast through the portable Internet, the present invention provides a method of re-transmitting BCC and digital broadcasting using a multicast method on a portable internet, and a computer-readable recording medium recording a program for realizing the method. Its purpose is to.

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 appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the 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; And a portable Internet broadcasting step of broadcasting the UCC data converted in the data converting step through the portable Internet in a multicast manner. In addition, the present invention, by performing the authentication for the user in accordance with the access request from the user viewer terminal, if the authentication is successful, the user to the viewer terminal of the user to receive the UCC broadcast transmitted in multicast Access information transmission step of transmitting the UCC broadcast access information; And a bidirectional message from the content provider terminal or the viewer terminal currently receiving the UCC broadcast to convert into multicast data to form a community between the user of the content provider and the viewer terminal. The method further includes a bidirectional transmission step of broadcasting through.

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 broadcasting menu providing step of generating broadcasting menu metadata for the multicast data converted in the data converting step and providing the broadcasting menu metadata to a user; 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. The present invention performs authentication for the user according to the access request from the user viewer terminal, and if the authentication is successful, the user accesses the broadcast to the viewer terminal of the user so that the user can receive the digital broadcast transmitted by multicast. Further comprising the step of transmitting the access information for transmitting information.

On the other hand, the present invention, the user-generated content (UCC) from the content provider (CP) terminal to the UCC broadcasting system equipped with a processor for broadcasting the user-generated content (UCC) using the multicast method on the portable Internet unicast data UCC receiving function to receive; A data conversion function for converting the received UCC unicast data into multicast data; And a computer-readable recording medium having recorded thereon a program for realizing the portable Internet broadcasting function of broadcasting the UCC data converted by the data conversion function through the portable Internet in a multicast manner.

Meanwhile, the present invention provides a digital broadcast retransmission system having a processor for retransmitting digital broadcasts using a multicast scheme on a portable Internet, comprising: a broadcast signal receiving function for receiving a digital broadcast signal input from the outside; A data conversion function of generating the multicast data by encoding the received digital broadcast signal into a broadcast format on a portable Internet; A broadcast menu providing function of generating broadcast menu metadata for the multicast data converted by the data converting function and providing the broadcast menu metadata to a user; And a computer-readable recording medium having recorded thereon a program for realizing the portable Internet broadcasting function of broadcasting the multicast data converted by the data conversion function through the portable Internet in a multicast manner.

According to the present invention, (1) TCP-based unicast service uses a real time streaming protocol (RTSP), a real time transcoder protocol (RTP), and the like to compress media data compressed in an H.264 video format. And (2) the UDP-based multicast service uses a method of transmitting media data compressed in an H.264 video format to MPEG2 TS (Transport Stream).

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. 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, exemplary embodiments 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 works in conjunction with the 'UCC broadcasting' and 'digital broadcasting retransmission' system 12 to receive multimedia unicast reception, multimedia multicast reception, and bi-directional communication between users. Interaction) Corresponds to the client. If a user such as a WiBro PDA or a PC terminal installs a CP tool on the terminal, the user corresponds to a content provider (CP) terminal 10, and if a user installs a viewer, the viewer terminal 14 It corresponds to.

On the other hand, 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 provides a WiBro backend ( Backend) The service subscriber is managed in association 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. When retransmitting digital broadcasting, it may be referred to as a 'digital broadcasting 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 by H.264 and Audio is encoded by AAC +, etc.) of the content provider (CP) as a 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) transmission module 125 stores non-real-time UCC content (Video is encoded in H.264, Audio is encoded in AAC +, etc.) of the content provider (CP) through 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 a content provider (CP) or viewer terminal user, 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 WiBro back-end system 13. Here, the WiBro back-end system 13 includes an authentication gateway 131, a subscriber information system 132, a CMS 133, and a charging gateway 134.

2 is a flowchart illustrating an example of a method for broadcasting a multicast broadcasting system using a multicast method on a portable Internet according to the present invention. The WiBro user 10 hosts a UCC broadcast using a CP tool and the other WiBro users 14 ) Shows a process of receiving UCC broadcast multicast data through the UCC broadcast system '12 using a viewer.

Among the WiBro subscribers, a user who is determined to be an available user through the user inquiry process and authentication of the WiBro back end system 13 through the UCC multicast service subscriber, that is, the management module 127, is transferred to the CP terminal 10. When the user accesses the menu processing module 126 and inputs a broadcast menu registration by inputting a UCC broadcast time (201), the menu processing module 126 creates a UCC broadcast schedule (UCC broadcast metadata) according to the input information and generates a database. In operation 202, the CP terminal 10 informs the CP terminal 10 that the UCC broadcast menu generation has been completed (203).

Then, the CP terminal 10 encodes an image (multimedia data that the user wants to broadcast) input through a softcam capturing tool or a webcam (Video encodes in H.264, and Audio encodes in AAC +). Request unicast transmission to the UCC transmission / reception module 122 (204). In this case, the UCC transmission / 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).

When the UCP broadcast stream is transmitted unicast from the authenticated CP terminal 10 to the UCC transmit / receive module 122 (208), the UCC transmit / receive module 122 converts the input unicast data into multicast data ( 209) By binding, a multicast service is performed at the network end (210). The UCC broadcast provided by the multicast service is transmitted to the WiBro network 11 through a router supporting multicast, and becomes a viewable state.

The viewer terminal 14 requests access to a broadcast to be watched from the broadcast list received from the menu processing module 126, and views the UCC broadcast through IGMP (Internet Group Management Protocol) Join through the corresponding UCC broadcast access information. Done. 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 WiBro back-end system 130 (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. In operation 217, the user watches the UCC broadcast.

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 BCC broadcasting using a multicast scheme on 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 type Text / Media to the interactive processing module 124 (303), the interactive processing module 124 may be a user. The bidirectional message requested from the user is converted into multicast data and bound (304), and transmitted to the user 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 and binds the bidirectional message requested to the user terminal (141) to multicast data, and is currently 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 text / media type bidirectional data transmission.

FIG. 4 is a flowchart illustrating a digital broadcast retransmission method using a multicast scheme on a portable Internet according to the present invention, wherein a WiBro user provides an IPTV / DMB provided by a digital broadcast retransmission system 12 using a viewer. A process of receiving retransmission broadcast 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, 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 user authentication through the WiBro backend system 130 and notifies the authentication result to the menu processing module 126 (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).

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

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention enables a WiBro user to author and register UCC content using a CP tool, so that not only a unicast service but also a WiBro user becomes a subject of UCC broadcasting and provides a multicast 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 over the portable Internet.

In addition, the present invention, by using a transcoder (Transcoder) to retransmit the existing IPTV, DMB broadcasts via multicast over the WiBro network, WiBro users who do not have a dedicated terminal for receiving IPTV / DMB broadcasts can also receive IPTV, DMB broadcasts (Overcoming the limitations of dedicated terminals), 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; And The portable Internet broadcasting step of broadcasting the UCC data converted in the data conversion step through the portable Internet in a multicast manner UCC broadcasting method using a multicast method on the mobile Internet comprising a. The method of claim 1, When the authentication is successful, the UCC broadcast access information is transmitted to the viewer terminal of the user so that the user can receive the UCC broadcast transmitted by multicast. Connection Information Transmission Step UCC broadcasting method using a multicast method on the mobile Internet further comprising. The method of claim 1, 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 that is currently receiving UCC broadcast, and is converted into multicast data through a mobile Internet. Two way broadcast phase UCC broadcasting method using a multicast method on the mobile Internet further comprising. The method according to any one of claims 1 to 3, 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 the 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. The method of claim 4, wherein 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. The method of claim 4, wherein The data conversion step, The UCC broadcasting method using the multicast method on the portable Internet, characterized in that for converting the received UCC unicast data into multicast data according to the MPEG-2 TS standard. The method of claim 4, wherein 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 user currently watching a UCC broadcast in a multicast manner; UCC broadcasting method using a multicast method on the mobile Internet comprising a. The method of claim 4, wherein The bidirectional transmission step, A bidirectional data receiving step of receiving a bidirectional message from a user viewer terminal receiving a UCC broadcast transmitted by multicast in the portable internet broadcasting step; Converting the received bidirectional message into multicast data; And Transmitting the bidirectional message converted into the multicast data to another user viewer terminal or the content provider (CP) terminal currently watching the UCC broadcast in a multicast manner; 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 for the multicast data converted in the data conversion step and providing the broadcast menu metadata to a user; 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, The authentication is performed for the corresponding user according to the access request from the user's viewer terminal. If the authentication is successful, the access is transmitted to the viewer's viewer terminal so that the user can receive the digital broadcast transmitted by multicast. Information transfer phase UCC broadcasting method using a multicast method on the mobile Internet further comprising. The method according to claim 9 or 10, The data conversion step, UCC broadcasting method using a multicast method on the portable Internet, characterized in that for converting the data of the received digital broadcast signal into multicast data according to the MPEG-2 TS standard. In the UCC broadcasting system having a processor for broadcasting user-generated content (UCC) using a multicast method on the portable Internet, A UCC receiving function for receiving user-generated content (UCC) as unicast data from a content provider (CP) terminal; A data conversion function for converting the received UCC unicast data into multicast data; And Portable Internet broadcasting function for broadcasting UCC data converted by the data conversion function through the portable Internet in a multicast manner A computer-readable recording medium having recorded thereon a program for realizing this. In a digital broadcasting retransmission system having a processor for retransmitting digital broadcasting using a multicast scheme on a portable Internet, A broadcast signal receiving function for receiving a digital broadcast signal input from the outside; A data conversion function of generating the multicast data by encoding the received digital broadcast signal into a broadcast format on a portable Internet; A broadcast menu providing function of generating broadcast menu metadata for the multicast data converted by the data converting function and providing the broadcast menu metadata to a user; And Portable Internet broadcasting function for broadcasting the multicast data converted by the data conversion function in a multicast manner through the portable Internet. A computer-readable recording medium having recorded thereon a program for realizing this.

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