KR101994634B1 - Method of transmitting signaling data of hybrid broadcast service and apparatus using the same - Google Patents

Method of transmitting signaling data of hybrid broadcast service and apparatus using the same Download PDF

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KR101994634B1
KR101994634B1 KR1020150161550A KR20150161550A KR101994634B1 KR 101994634 B1 KR101994634 B1 KR 101994634B1 KR 1020150161550 A KR1020150161550 A KR 1020150161550A KR 20150161550 A KR20150161550 A KR 20150161550A KR 101994634 B1 KR101994634 B1 KR 101994634B1
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South Korea
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data
signaling
signaling data
broadcast
broadcast service
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KR1020150161550A
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Korean (ko)
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KR20170057978A (en
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임현정
배병준
오혜주
김순철
임형수
허남호
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한국전자통신연구원
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/232—Content retrieval operation locally within server, e.g. reading video streams from disk arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2362—Generation or processing of Service Information [SI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Disclosed is a method and apparatus for transmitting signaling data of a hybrid broadcast service. The signaling data transmission method according to the present invention comprises the steps of: receiving broadcast information corresponding to a hybrid broadcast service using a broadcast network and a communication network; Generating at least one signaling data corresponding to each of the broadcasting network and the communication network based on the broadcasting information; And transmitting the at least one signaling data to a plurality of component devices for providing the hybrid broadcast service.

Figure R1020150161550

Description

Signaling data transmission method of hybrid broadcasting service and apparatus using same {METHOD OF TRANSMITTING SIGNALING DATA OF HYBRID BROADCAST SERVICE AND APPARATUS USING THE SAME}

The present invention relates to a signaling data transmission technology of a hybrid broadcasting service for generating signaling data and transmitting the same to each component in order to provide a broadcasting service in a hybrid broadcasting environment using a digital broadcasting network and a communication network.

In order to provide a broadcast service, broadcast service signaling information delivered to a receiver by describing information on the broadcast service in a form that the receiver can interpret is essential. In order to generate such broadcast service signaling information, the MPEG-2 systems-based broadcasting environment delivers MPEG (Moving Picture Experts Group) based Program Specific Information (PSI), and is defined by each broadcasting standard. Binary data is constructed using the PSIP (Program and System Information Protocol) standard of Advanced Television System Committee (ATSC), Service Information (SIB) standard of Digital Video Broadcasting, etc.

The broadcast service signaling information configured as described above is delivered to the receiver in the form of MPEG-2 Transport Stream (TS) together with media data constituting the broadcast service.

However, the next generation broadcasts no longer use the MPEG-2 system for transmission of broadcast services, and therefore, standards such as ATSC-PSIP and DVB-SI, including MPEG-PSI, are not used for signaling broadcast services. In addition, in order to overcome the limitations of MPEG-2 TS, which is used to deliver broadcast services, ATSC and DVB have been discussed to transmit next generation broadcast services based on IP (Internet Protocol). In particular, ATSC, where standardization of a broadcast service transmission protocol and related applications is first performed on a next generation broadcast service, a discussion on a new signaling scheme for a type IP based broadcast service is actively being conducted.

ATSC calls the IP-based next-generation broadcast service ATSC 3.0, and defines two levels of broadcast service signaling for providing ATSC 3.0-based services, divided into low level signaling (LSL) and service layer signaling (SLS).

Accordingly, in order to provide a hybrid broadcast service using a digital broadcasting network and a communication network, a new signaling data generation and transmission technique of generating signaling data of an IP level and a service level and transmitting the generated signaling data to component devices for transmitting a broadcast The need for this is urgent.

Korean Unexamined Patent Publication No. 10-2015-0008797, published on January 23, 2015 (name: method and apparatus for providing broadcast content)

An object of the present invention is to provide a method for generating broadcast service signaling data and delivering it to a receiver so that IP-based hybrid broadcast service can be easily provided.

It is also an object of the present invention to provide a method for efficiently providing broadcast service signaling data using a broadcast network and a communication network.

It is also an object of the present invention to develop a next generation broadcast service and system in an IP based broadcast environment by providing a signaling generation and transmission method that can be used in an IP based hybrid broadcast service.

According to another aspect of the present invention, there is provided a method of transmitting signaling data of a hybrid broadcast service, the method including: receiving broadcast information corresponding to a hybrid broadcast service using a broadcast network and a communication network; Generating at least one signaling data corresponding to each of the broadcasting network and the communication network based on the broadcasting information; And transmitting the at least one signaling data to a plurality of component devices for providing the hybrid broadcast service.

In this case, the transmitting may include transmitting low level signaling (LLS) data corresponding to the broadcasting network among the at least one signaling data to a first component apparatus corresponding to the broadcasting network among the plurality of component apparatuses; And transmitting service layer signaling (SLS) data corresponding to the communication network among the at least one signaling data to a second component device corresponding to the communication network among the plurality of component devices.

In this case, the generating may generate the LLS data corresponding to an IP packet type including at least one of a service list table (SLT) and a rating region table (RRT).

In this case, the LLS data corresponds to IP (Internet Protocol) level signaling data and may be transmitted to the receiver receiving the hybrid broadcast service before the SLS data.

In this case, the generating may generate the SLS data to include at least one of configuration information corresponding to the plurality of component devices, content acquisition information corresponding to the hybrid broadcast service, and performance of the receiver.

In this case, the SLS data may include a fragment according to a transport protocol scheme corresponding to the hybrid broadcast service, and may be transmitted based on a session generated corresponding to the transport protocol scheme.

In this case, the signaling data transmission method may further include storing the broadcast information and the at least one signaling data.

In this case, the broadcast information may include at least one of broadcast service information corresponding to the plurality of component devices and transmission schedule information for each of the plurality of component devices.

In this case, the transmitting may generate a transmission processing command corresponding to any one of the LLS data and the SLS data based on the transmission schedule information to transmit the at least one signaling data.

In this case, the signaling data transmission method may further include repeatedly transmitting the at least one signaling data to at least one of the plurality of component devices based on a predetermined update period of the signaling data.

In addition, the signaling data transmission apparatus of the hybrid broadcast service according to an embodiment of the present invention, the receiver for receiving broadcast information corresponding to the hybrid broadcast service; A signaling data generation unit generating at least one signaling data corresponding to each of a broadcasting network and a communication network based on the broadcasting information; And a signaling data transmitter for transmitting the at least one signaling data to a plurality of component devices for providing the hybrid broadcast service.

In this case, the signaling data transmitter is an LLS data transmitter that transmits LLS (Low Level Signaling) data corresponding to the broadcast network among the at least one signaling data to a first component device corresponding to the broadcast network among the plurality of component devices. ; And an SLS data transmission unit configured to transmit service layer signaling (SLS) data corresponding to the communication network among the at least one signaling data to a second component device corresponding to the communication network among the plurality of component devices.

In this case, the signaling data generation unit may generate the LLS data corresponding to an IP packet type including at least one of a service list table (SLT) and a rating region table (RRT).

In this case, the LLS data corresponds to IP (Internet Protocol) level signaling data and may be transmitted to the receiver receiving the hybrid broadcast service before the SLS data.

In this case, the signaling data generator may generate the SLS data to include at least one of configuration information corresponding to the plurality of component devices, content acquisition information corresponding to the hybrid broadcast service, and capabilities of the receiver.

In this case, the SLS data may include a fragment according to a transport protocol scheme corresponding to the hybrid broadcast service, and may be transmitted based on a session generated corresponding to the transport protocol scheme.

In this case, the apparatus for transmitting signaling data may further include a signaling database storing the broadcast information and the at least one signaling data.

In this case, the broadcast information may include at least one of broadcast service information corresponding to the plurality of component devices and transmission schedule information for each of the plurality of component devices.

In this case, the signaling data transmitter may transmit the at least one signaling data by generating a transmission processing command corresponding to any one of the LLS data and the SLS data based on the transmission schedule information.

In this case, the apparatus for transmitting signaling data may further include an update unit for repeatedly transmitting the at least one signaling data to at least one of the plurality of component apparatuses based on a preset update period of the signaling data.

According to the present invention, it is possible to provide a method for generating broadcast service signaling data and delivering it to a receiver to facilitate IP-based hybrid broadcast service provision.

In addition, the present invention can provide a method for efficiently providing broadcast service signaling data using a broadcast network and a communication network.

In addition, the present invention can develop a next generation broadcast service and system in an IP-based broadcasting environment by providing a signaling generation and transmission method that can be used in the IP-based hybrid broadcast service.

1 is a block diagram illustrating a hybrid broadcast service system according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating an example of an apparatus for transmitting signaling data shown in FIG. 1.
FIG. 3 is a block diagram illustrating an example of the signaling data transmitter illustrated in FIG. 2.
4 is a diagram illustrating a signaling data transmission process according to an embodiment of the present invention.
5 is a flowchart illustrating a signaling data transmission method of a hybrid broadcast service according to an embodiment of the present invention.
6 is a flowchart illustrating in detail a signaling data transmission method of a hybrid broadcast service according to an embodiment of the present invention.
7 is a block diagram illustrating a computer system according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Here, the repeated description, well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention, and detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more completely describe the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.

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

1 is a block diagram illustrating a hybrid broadcast service system according to an embodiment of the present invention.

1, a hybrid broadcast service system according to an embodiment of the present invention includes a broadcast schedule information generating device 101, a content server 102, a signaling data transmitting device 103, a broadcast service encoding device 104, The broadcast transmission processing apparatus 105, the broadcast multiplexing apparatus 106, the broadcast transmission apparatus 107, the communication service encoding apparatus 108, the communication transmission server 109, the broadcast network 110, and the communication network 120 are included.

In this case, the hybrid broadcast service system according to an embodiment of the present invention may correspond to a transmission system for providing a hybrid broadcast service. In addition, the hybrid broadcast service system according to an embodiment of the present invention may correspond to the structure of the signaling data generation device 103 for generating signaling data and a broadcast transmission device related thereto.

The broadcast schedule information generating device 101 generates the transmission schedule information for each component constituting the service and the information on the hybrid service configuration and transmits the information to the content server 102 and the signaling data transmission device 103.

The content server 102 receives schedule information and component configuration information from the broadcast schedule information generating device 101. Subsequently, the broadcast service encoding apparatus 104 or the communication service encoding apparatus 108 may transmit the content to the broadcast network 110 and the communication network 120 so that the content constituting the broadcast service is encoded according to the broadcast schedule information. To pass.

The broadcast service encoding apparatus 104 encodes the content received from the content server 102 using a codec suitable for a broadcast service, and transmits the encoded content to the broadcast transmission processing apparatus 105.

The communication service encoding apparatus 108 receives the content to be delivered through the communication network 120 from the content server 102, and encodes the content in a form suitable for the communication service protocol to be delivered to the communication network 120. Create a file or streaming data.

The signaling data generating apparatus 103 receives component information constituting a broadcast service, information on a transmission method for each component, and the like, from the broadcast schedule information generating apparatus 101, generates related signaling data, and broadcasts it to the broadcast transmission processing apparatus 105. And the broadcast multiplexing device 106. In addition, if the signaling data is transmitted to the broadcasting related information received from the broadcast schedule information generating apparatus 101 through the communication network 120, the signaling data is also transmitted to the communication transmission server 109.

The broadcast transmission processing apparatus 105 packetizes the content encoded by the broadcast service encoding apparatus 104 into a form suitable for the broadcast transmission protocol according to the broadcast service transmission method. Thereafter, the associated metadata is generated and delivered to the broadcast multiplexing device 106.

The broadcast multiplexing device 106 multiplexes the signaling data received from the signaling data generating device 103 and the broadcast content received from the broadcast transmission processing device 105 and transmits the same to the broadcast transmitting device 107.

The broadcast transmission device 107 transmits the multiplexed broadcast stream to a device that receives a broadcast through the broadcast network 110.

The communication transmission server 109 receives the data generated by the communication service encoding apparatus 108 and the signaling data generated by the signaling data generating apparatus 103, respectively. Thereafter, at the request of the receiving device, the content, streaming data, and signaling data are delivered to the receiving device through the communication network 120.

In addition, unlike the method in which the signaling data generated by the signaling data generating apparatus 103 is transmitted through the broadcasting network 110, the communication transmitting server 109 may transmit data suitable for a request of the receiving device to the receiving device. It may include.

FIG. 2 is a block diagram illustrating an example of an apparatus for transmitting signaling data shown in FIG. 1.

Referring to FIG. 2, the apparatus 103 for transmitting signaling data illustrated in FIG. 1 includes a receiver 210, a signaling data generator 220, a signaling data transmitter 230, a signaling database 240, and an updater 250. ).

The receiver 210 receives broadcast information corresponding to a hybrid broadcast service.

In this case, the broadcast information may be generated from the broadcast schedule information generating device, and the received broadcast information may be stored in the signaling database 240.

In this case, the broadcast information may include at least one of broadcast service information corresponding to the plurality of component devices and transmission schedule information for each of the plurality of component devices.

The signaling data generation unit 220 generates at least one signaling data corresponding to each of the broadcasting network and the communication network based on the broadcasting information.

In this case, the signaling data generation unit 220 may be divided into a part for generating LLS data and a part for generating SLS data internally, and analyzes information on a broadcast service included in broadcast information to generate LLS data or SLS data. Can be generated.

In this case, LLS data may be generated according to an IP packet type including at least one of a service list table (SLT) and a rating region table (RRT).

In this case, the SLT may transmit signaling information related to bootstrapping for fast channel scan and service acquisition, and may be used for the MPEG-2 system's PAT (Program Association Table) and ATSC-Mobile DTV standards. Can function similar to the FIC (Fast Information Channel). That is, ATSC 3.0 can provide a fast channel scan function by providing a list of all services that the receiver can receive through the SLT delivered as LLS data, and by providing bootstrap information, the receiver provides each service. You can discover SLS data related to.

In this case, the bootstrap information may be different according to a broadcast service transmission protocol for delivering broadcast media content. For example, in the case of a Real-Time Object Delivery over Unidirectional Transport (ROUTE) / Dynamic Adaptive Streaming over Http (DASH) service, a destination IP, a destination port, and a transport session identifier (TSI) for delivering SLS data may be provided. have. In addition, in case of MPEG Media Transport (MMT) / Media Processing Unit (MPU) transmission, a packet_id or the like of a destination IP, a destination port, and an MPEG Media Transport Protocol (MMTP) channel carrying SLS data may be provided.

In addition, the RRT may correspond to a table for delivering signaling data necessary for a local broadcast service.

In this case, the LLS data may correspond to signaling data of an IP (internet protocol) level and may be transmitted to the receiver receiving the hybrid broadcast service before the SLS data. That is, LLS data may be signaling information of an IP level that is received before SLS data from a receiver and obtained before a session for receiving a service is completed. For example, in ATSC 3.0, LLS data may consist of IP packets delivered to IP address 224.0.23.60 and port number 4937.

Such a method of delivering signaling at the IP level may be a method defined to overcome a disadvantage in that service acquisition time may be lengthened in IP-based broadcasting service transmission. In the future, LLS data may be used in other IP-based broadcasting standards other than ATSC 3.0. It is likely that a signaling structure such as In addition, although SLT and RRT are defined as signaling information transmitted through LLS data of ATSC 3.0, new signaling tables may be defined in the future according to necessity of providing a service.

In this case, the SLS data may be generated to include at least one of configuration information corresponding to the plurality of component devices, content acquisition information corresponding to the hybrid broadcast service, and performance of the receiver. That is, the SLS data may play a role of defining information required for providing a broadcast service, such as component information constituting each service, a method of acquiring a content, and performance of a receiver required for providing a service, for each broadcast service, and delivering the information to a receiver. .

As the SLS data is used, the receiver may parse only the service selected by the user without parsing all the received broadcast services, and thus the receiver resources may be used more efficiently. In addition, the SLS data may be delivered to the receiver using a communication network as well as a broadcasting network, and a URL for obtaining data related to the SLS data may be delivered to the LLS data to support the communication network.

In this case, the SLS data may include signaling related data suitable for each transmission scheme according to the broadcast transmission scheme.

For example, when the broadcast transmission processing apparatus uses the ROUTE transmission method, SLS data including a user service bundle description (USBD), a service-level transport session instance description (S-TSID), a media presentation description (MPD), and the like may be stored. Can be generated. In this case, the MPD may be obtained from a broadcast service encoding apparatus capable of processing DASH and stored in the signaling database 240 along with other SLS data.

For another example, when the MMTP transmission method is used in the broadcast transmission processing apparatus, the USBD referencing the MMT Package Table (MPT) message, which is MMT self-defined signaling, and package ID and location information of assets to which the service belongs. It is also possible to generate SLS data including an MP table or the like.

The signaling data transmitter 230 transmits at least one signaling data to a plurality of component devices for providing a hybrid broadcast service.

For example, signaling data may be transmitted to a broadcast transmission processing apparatus for packetizing content encoded in a form suitable for a broadcast service according to a broadcast service transmission method, or a broadcast multiplexing apparatus for multiplexing and transmitting broadcast content according to a broadcast transmission protocol. Can transmit

For another example, signaling data may be transmitted to a communication transmission server that provides content through a communication network according to a request of a receiving device receiving a broadcast service.

At this time, a transmission processing command corresponding to any one of the LLS data and the SLS data may be generated based on the transmission schedule information to transmit at least one signaling data. For example, a module in charge of the transmission of the LLS data and the module responsible for transmitting the LLS data so that the LLS data and the SLS data can be delivered to at least one of the broadcast multiplexing device, the broadcast transmission processing device, and the communication transmission server at an appropriate timing. Can be passed to each module in charge of.

In this case, low level signaling (LLS) data corresponding to the broadcast network may be transmitted among the at least one signaling data to the first component device corresponding to the broadcast network among the plurality of component devices.

For example, when receiving a transmission processing command for LLS data, signaling data constituting LLS data may be obtained from the signaling database 240. Thereafter, the LLS data obtained from the signaling database 240 may be transmitted to the broadcast transmission processing apparatus or the broadcast multiplexing apparatus. In addition, the transmission may be interrupted according to the transmission processing instruction.

In this case, service layer signaling (SLS) data corresponding to a communication network among at least one signaling data may be transmitted to a second component device corresponding to a communication network among the plurality of component devices.

For example, upon receiving a transmission processing command for SLS data, signaling data constituting SLS data may be obtained from the signaling database 240. Thereafter, the SLS data obtained from the signaling database 240 may be transmitted to the broadcast transmission processing apparatus, the broadcast multiplexing apparatus, or the communication transmission server. In addition, the transmission may be interrupted according to the transmission processing instruction.

The signaling database 240 stores broadcast information and at least one signaling data. For example, signaling data corresponding to LLS data and SLS data generated corresponding to a broadcast service may be stored.

In this case, data corresponding to the LLS data and the SLS data may be separately stored. By separating and storing the data corresponding to the LLS data and the SLS data in this way, it may be easier to provide signaling data when providing the LLS data and the SLS data according to the transmission processing command.

In addition, broadcast information received from the broadcast schedule information generating device may be stored. For example, an environment variable for operating a management system may be stored and managed along with broadcast schedule information and broadcast service information.

In addition, the signaling data stored in the signaling database 240 may be delivered to the apparatus for generating broadcast schedule information and used to allow the user to look up information related to the broadcast schedule.

In addition, the user may store a broadcast schedule or broadcast service related information created or modified by the user.

The updater 250 repeatedly transmits at least one signaling data to at least one of a plurality of component devices based on a predetermined update period of the signaling data.

For example, data related to LLS data stored in the signaling database 240 may be repeatedly transmitted to the broadcast multiplexing apparatus in a multicast manner according to a preset update period of the signaling information set in the signaling database 240.

As another example, the broadcast schedule information stored in the signaling database 240 may be interpreted to repeatedly transmit data related to the SLS data to the communication transmission server through the communication network.

By using the signaling data transmission apparatus of the hybrid broadcast service, it is possible to provide a method of generating broadcast service signaling data and delivering it to a receiver so that an IP-based hybrid broadcast service can be easily provided.

In addition, a method of efficiently providing broadcast service signaling data using a broadcast network and a communication network may be provided.

In addition, by providing a signaling generation and transmission method that can be used in the IP-based hybrid broadcast service it is possible to develop the next generation broadcast service and system in the IP-based broadcast environment.

FIG. 3 is a block diagram illustrating an example of the signaling data transmitter illustrated in FIG. 2.

Referring to FIG. 3, the signaling data transmitter 230 shown in FIG. 2 includes an LLS data transmitter 310 and an SLS data transmitter 320.

The LLS data transmitter 310 transmits LLS (Low Level Signaling) data corresponding to the broadcasting network among the at least one signaling data to the first component apparatus corresponding to the broadcasting network among the plurality of component apparatuses.

For example, when the LLS data transmitter 310 receives a transmission processing command for the LLS data, the LLS data transmitter 310 may acquire signaling data constituting the LLS data from the signaling database. Thereafter, the LLS data obtained from the signaling database may be transmitted to the broadcast transmission processing apparatus or the broadcast multiplexing apparatus. In addition, the transmission may be interrupted according to the transmission processing instruction.

The SLS data transmitter 320 transmits service layer signaling (SLS) data corresponding to a communication network among at least one signaling data to a second component device corresponding to a communication network among the plurality of component devices.

For example, when the SLS data transmitter 320 receives a transmission processing command for SLS data, the SLS data transmitter 320 may acquire signaling data configuring SLS data from a signaling database. Thereafter, the SLS data obtained from the signaling database may be transmitted to the broadcast transmission processing apparatus, the broadcast multiplexing apparatus, or the communication transmission server. In addition, the transmission may be interrupted according to the transmission processing instruction.

4 is a diagram illustrating a signaling data transmission process according to an embodiment of the present invention.

Referring to FIG. 4, in order to generate and manage signaling data for a broadcast service so that it can be finally delivered to a receiving side, the signaling data transmitting apparatus 400 includes a signaling data generating unit 410 and an LLS data transmitting unit. 420, an SLS data transmitter 430, a signaling database 440, and the like.

First, the signaling data generator 410 may generate signaling data that can be interpreted by a receiving device that receives a broadcast service and store the signaling data in the signaling database 440.

In this case, in order to generate signaling data, broadcast schedule information and broadcast service information generated from the broadcast schedule information generating apparatus and already stored in the signaling database 440 may be used.

Thereafter, the signaling data generation unit 410 is divided into an LLS data generation module 411 for generating LLS data internally and an SLS data generation module 412 for generating SLS data, and is generated by a broadcast schedule information generating device. The information about the service may be analyzed to generate signaling data corresponding to the LLS data or signaling data corresponding to the SLS data.

In this case, the LLS data includes an SLT, an RRT, and the like, and in the case of the SLS data, signaling related data suitable for each transmission scheme is generated according to a transmission scheme used by the broadcast transmission processing apparatus. For example, when the broadcast transmission processing apparatus uses the ROUTE transmission method, USBD, S-TSID, MPD, etc. may be generated as SLS data. In such a case, the MPD may be obtained from a broadcast service encoding apparatus capable of processing DASH and stored in the signaling database 440 along with other SLS data generated by the signaling data generator 410.

In addition, the signaling data generator 410 transmits a transmission processing command to the LLS data transmitter 420 and the SLS data so that the LLS data and the SLS data can be transmitted to the broadcast multiplexing apparatus, the broadcast transmission processing apparatus, and the communication transmission server at an appropriate timing. The transmission unit 430 may transmit.

In this case, when the LLS data transmitter 420 receives a transmission processing command transmitted from the signaling data generator 410, the LLS data transmitter 420 reads the LLS-related data 441 corresponding to the LLS data from the signaling database 440 and then reads it. Can transmit

In addition, the LLS-related data 441 stored in the signaling database 440 may be repeatedly transmitted to the broadcast multiplexing apparatus in a multicast manner according to an update period of signaling information preset in the signaling database 440.

At this time, when the SLS data transmitter 430 receives the transmission processing command transmitted from the signaling data generator 410, the SLS data transmitter 430 reads the SLS-related data 442 corresponding to the SLS data from the signaling database 440 and then reads it. Can transmit

In addition, the SLS-related data 442 stored in the signaling database 440 may be delivered to the broadcast transmission processing apparatus. In this case, similar to the LLS data transmitter 420, the data may be repeatedly delivered to the signaling database 440 according to an update period of preset signaling information.

In addition, the broadcast schedule information stored in the signaling database 440 is interpreted, and the SLS data is transmitted to the communication transmission server when the SLS-related data 442 is set to be transmitted through the communication network.

In this case, the signaling database 440 may manage broadcast schedule information received from the broadcast schedule information generating device, broadcast service information, and environment variables for operating the management system.

In addition, the signaling data stored in the signaling database 440 may be delivered to the apparatus for generating broadcast schedule information so that the user may look at predetermined information related to the broadcast schedule. In addition, the broadcast schedule and broadcast service related information created or modified by the user may be stored in the signaling database 440.

5 is a flowchart illustrating a signaling data transmission method of a hybrid broadcast service according to an embodiment of the present invention.

Referring to FIG. 5, the signaling data transmission method of the hybrid broadcast service according to an embodiment of the present invention receives broadcast information corresponding to the hybrid broadcast service (S510).

In this case, the broadcast information may be generated from the broadcast schedule information generating device, and the received broadcast information may be stored in the signaling database.

In this case, the broadcast information may include at least one of broadcast service information corresponding to the plurality of component devices and transmission schedule information for each of the plurality of component devices.

In addition, the signaling data transmission method of the hybrid broadcast service according to an embodiment of the present invention generates at least one signaling data corresponding to each of a broadcast network and a communication network based on broadcast information (S520).

In this case, the signaling data generation unit for generating signaling data may be divided into a part for generating LLS data and a part for generating SLS data internally, and analyzes information on a broadcast service included in broadcast information to analyze LLS data or SLS data. Can be generated.

In this case, LLS data may be generated according to an IP packet type including at least one of a service list table (SLT) and a rating region table (RRT).

At this time, the SLT can deliver signaling information related to bootstrapping for fast channel scan and service acquisition, and can be used in the MPEG-2 system's PAT (Program Association Table) and ATSC-Mobile DTV standards. Can function similar to the FIC (Fast Information Channel). That is, ATSC 3.0 can provide a fast channel scan function by providing a list of all services that the receiver can receive through the SLT delivered as LLS data, and by providing bootstrap information, the receiver provides each service. You can discover SLS data related to.

In this case, the bootstrap information may be different according to a broadcast service transmission protocol for delivering broadcast media content. For example, in the case of a Real-Time Object Delivery over Unidirectional Transport (ROUTE) / Dynamic Adaptive Streaming over Http (DASH) service, a destination IP, a destination port, and a transport session identifier (TSI) for delivering SLS data may be provided. have. In addition, in case of MPEG Media Transport (MMT) / Media Processing Unit (MPU) transmission, a packet_id or the like of a destination IP, a destination port, and an MPEG Media Transport Protocol (MMTP) channel carrying SLS data may be provided.

In addition, the RRT may correspond to a table for delivering signaling data necessary for a local broadcast service.

In this case, the LLS data may correspond to signaling data of an IP (internet protocol) level and may be transmitted to the receiver receiving the hybrid broadcast service before the SLS data. That is, LLS data may be signaling information of an IP level that is received before SLS data from a receiver and obtained before a session for receiving a service is completed. For example, in ATSC 3.0, LLS data may consist of IP packets delivered to IP address 224.0.23.60 and port number 4937.

Such a method of delivering signaling at the IP level may be a method defined to overcome a disadvantage in that service acquisition time may be lengthened in IP-based broadcasting service transmission. In the future, LLS data may be used in other IP-based broadcasting standards other than ATSC 3.0. It is likely that a signaling structure such as In addition, although SLT and RRT are defined as signaling information transmitted through LLS data of ATSC 3.0, new signaling tables may be defined in the future according to necessity of providing a service.

In this case, the SLS data may be generated to include at least one of configuration information corresponding to the plurality of component devices, content acquisition information corresponding to the hybrid broadcast service, and performance of the receiver. That is, the SLS data may play a role of defining information required for providing a broadcast service, such as component information constituting each service, a method of acquiring a content, and performance of a receiver required for providing a service, for each broadcast service, and delivering the information to a receiver. .

As the SLS data is used, the receiver may parse only the service selected by the user without parsing all the received broadcast services, and thus the receiver resources may be used more efficiently. In addition, the SLS data may be delivered to the receiver using a communication network as well as a broadcasting network, and a URL for obtaining data related to the SLS data may be delivered to the LLS data to support the communication network.

In this case, the SLS data may include signaling related data suitable for each transmission scheme according to the broadcast transmission scheme.

For example, when the broadcast transmission processing apparatus uses the ROUTE transmission method, SLS data including a user service bundle description (USBD), a service-level transport session instance description (S-TSID), a media presentation description (MPD), and the like may be stored. Can be generated. In such a case, the MPD may be obtained from a broadcast service encoding apparatus capable of processing DASH and stored in a signaling database along with other SLS data.

For another example, when the MMTP transmission method is used in the broadcast transmission processing apparatus, the USBD referencing the MMT Package Table (MPT) message, which is MMT self-defined signaling, and package ID and location information of assets to which the service belongs. It is also possible to generate SLS data including an MP table or the like.

In addition, the signaling data transmission method of the hybrid broadcast service according to an embodiment of the present invention transmits at least one signaling data to a plurality of component devices for providing the hybrid broadcast service (S530).

For example, signaling data may be transmitted to a broadcast transmission processing apparatus for packetizing content encoded in a form suitable for a broadcast service according to a broadcast service transmission method, or a broadcast multiplexing apparatus for multiplexing and transmitting broadcast content according to a broadcast transmission protocol. Can transmit

For another example, signaling data may be transmitted to a communication transmission server that provides content through a communication network according to a request of a receiving device receiving a broadcast service.

At this time, a transmission processing command corresponding to any one of the LLS data and the SLS data may be generated based on the transmission schedule information to transmit at least one signaling data. For example, a module in charge of the transmission of the LLS data and the module responsible for transmitting the LLS data so that the LLS data and the SLS data can be delivered to at least one of the broadcast multiplexing device, the broadcast transmission processing device, and the communication transmission server at an appropriate timing. Can be passed to each module in charge of.

In this case, low level signaling (LLS) data corresponding to the broadcast network may be transmitted among the at least one signaling data to the first component device corresponding to the broadcast network among the plurality of component devices.

For example, upon receiving a transfer processing command for LLS data, signaling data constituting LLS data can be obtained from a signaling database. Thereafter, the LLS data obtained from the signaling database may be transmitted to the broadcast transmission processing apparatus or the broadcast multiplexing apparatus. In addition, the transmission may be interrupted according to the transmission processing instruction.

In this case, service layer signaling (SLS) data corresponding to a communication network among at least one signaling data may be transmitted to a second component device corresponding to a communication network among the plurality of component devices.

For example, upon receiving a transmission processing command for SLS data, signaling data constituting SLS data can be obtained from a signaling database. Thereafter, the SLS data obtained from the signaling database may be transmitted to the broadcast transmission processing apparatus, the broadcast multiplexing apparatus, or the communication transmission server. In addition, the transmission may be interrupted according to the transmission processing instruction.

Although not shown in FIG. 5, the signaling data transmission method of the hybrid broadcast service according to an embodiment of the present invention stores broadcast information and at least one signaling data in a signaling database. For example, signaling data corresponding to LLS data and SLS data generated corresponding to a broadcast service may be stored.

In this case, data corresponding to the LLS data and the SLS data may be separately stored. By separating and storing the data corresponding to the LLS data and the SLS data in this way, it may be easier to provide signaling data when providing the LLS data and the SLS data according to the transmission processing command.

In addition, broadcast information received from the broadcast schedule information generating device may be stored. For example, an environment variable for operating a management system may be stored and managed along with broadcast schedule information and broadcast service information.

In addition, the signaling data stored in the signaling database may be delivered to the apparatus for generating broadcast schedule information and used to allow the user to look up information related to the broadcast schedule.

In addition, the user may store a broadcast schedule or broadcast service related information created or modified by the user.

In addition, although not shown in FIG. 5, in the signaling data transmission method of the hybrid broadcast service according to an embodiment of the present invention, at least one signaling data is based on a predetermined update period of the signaling data. Repeated transmission.

For example, data related to LLS data stored in the signaling database may be repeatedly transmitted to the broadcast multiplexing apparatus in a multicast manner according to a preset update period of the signaling information set in the signaling database.

For another example, the broadcast schedule information stored in the signaling database may be interpreted to repeatedly transmit data related to the SLS data to the communication transmission server through the communication network.

Based on the signaling data transmission method of the hybrid broadcast service, a method of generating broadcast service signaling data and delivering it to a receiver may be provided so that IP-based hybrid broadcast service can be easily provided.

In addition, a method of efficiently providing broadcast service signaling data using a broadcast network and a communication network may be provided.

In addition, by providing a signaling generation and transmission method that can be used in the IP-based hybrid broadcast service it is possible to develop the next generation broadcast service and system in the IP-based broadcast environment.

6 is a flowchart illustrating in detail a signaling data transmission method of a hybrid broadcast service according to an embodiment of the present invention.

Referring to FIG. 6, the signaling data transmission method of the hybrid broadcast service according to an embodiment of the present invention first receives broadcast information including broadcast service information and transmission schedule information (S610).

In this case, the broadcast information may be generated from the broadcast schedule information generating device, and the received broadcast information may be stored in the signaling database.

Thereafter, configuration information of the plurality of component devices is obtained based on the broadcast service information (S620).

In this case, the broadcast information may include at least one of broadcast service information corresponding to the plurality of component devices and transmission schedule information for each of the plurality of component devices.

Thereafter, LLS data and SLS data are generated based on configuration information of the plurality of component devices (S630).

In this case, the signaling data generation unit for generating signaling data may be divided into a part for generating LLS data and a part for generating SLS data internally, and analyzes information on a broadcast service included in broadcast information to analyze LLS data or SLS data. Can be generated.

In this case, LLS data may be generated according to an IP packet type including at least one of a service list table (SLT) and a rating region table (RRT). In addition, the LLS data corresponds to IP (Internet Protocol) level signaling data and may be transmitted to the receiver receiving the hybrid broadcast service before the SLS data.

In this case, the SLS data may be generated to include at least one of configuration information corresponding to the plurality of component devices, content acquisition information corresponding to the hybrid broadcast service, and performance of the receiver. In addition, the SLS data may include signaling related data suitable for each transmission scheme according to a broadcast transmission scheme.

Thereafter, the LLS data is transmitted to a component corresponding to the broadcasting network (S640).

For example, upon receiving a transfer processing command for LLS data, signaling data constituting LLS data can be obtained from a signaling database. Thereafter, the LLS data obtained from the signaling database may be transmitted to the broadcast transmission processing apparatus or the broadcast multiplexing apparatus. In addition, the transmission may be interrupted according to the transmission processing instruction.

After that, it is determined whether the communication network is set to be used (S645).

For example, it may be checked whether signaling data is set to be transmitted through the communication network to the broadcast related information received from the broadcast schedule information generating device.

If it is determined in step S645 to use the communication network, SLS data is transmitted to the component corresponding to the communication network (S650).

For example, upon receiving a transmission processing command for SLS data, signaling data constituting SLS data can be obtained from a signaling database. Thereafter, the SLS data obtained from the signaling database may be transmitted to the broadcast transmission processing apparatus, the broadcast multiplexing apparatus, or the communication transmission server. In addition, the transmission may be interrupted according to the transmission processing instruction.

In addition, if it is determined in step S645 that the communication network is not set to use, a component corresponding to the communication network provides a broadcast service without transmitting signaling data.

7 is a block diagram illustrating a computer system according to an embodiment of the present invention.

7, an embodiment of the present invention may be implemented in a computer system such as a computer readable recording medium. As shown in FIG. 7, computer system 700 includes one or more processors 710, a memory 730, a user input device 740, a user output device 750, and storage that communicate with each other via a bus 720. 760 may include. In addition, the computer system 700 may further include a network interface 770 that is connected to the network 780. The processor 710 may be a central processing unit or a semiconductor device that executes processing instructions stored in the memory 730 or the storage 760. Memory 730 and storage 760 may be various forms of volatile or nonvolatile storage media. For example, the memory may include a ROM 731 or a RAM 732.

Accordingly, embodiments of the present invention may be implemented in a computer-implemented method or a non-transitory computer-readable medium in which computer-executable instructions are recorded. When computer readable instructions are executed by a processor, the computer readable instructions may perform a method according to at least one aspect of the present invention.

The signaling data transmission method of the hybrid broadcast service according to the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and any type of hardware device specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions may include high-level language code that can be executed by a computer using an interpreter as well as machine code such as produced by a compiler. Such hardware devices may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, the signaling data transmission method and the apparatus using the same of the hybrid broadcast service according to the present invention are not limited to the configuration and method of the embodiments described as described above, the above embodiments may be variously modified. All or part of each of the embodiments may be configured to be selectively combined to make it possible.

101: broadcast schedule information generating device 102: content server
103 and 400: signaling data transmission device 104: broadcast service encoding device
105: broadcast transmission processing device 106: broadcast multiplexing device
107: broadcast transmission device 108: communication service encoding device
109: communication transmission server 110: broadcasting network
120: communication network 210: receiver
220, 410: signaling data generator 230: signaling data transmitter
240, 440: signaling database 250: update unit
310, 420: LLS data transmission unit 320, 430: SLS data transmission unit
411: LLS data generation module 412: SLS data generation module
441: LLS-related data 442: SLS-related data
700: computer system 710: processor
720: bus 730: memory
731: ROM 732: RAM
740: user input device 750: user output device
760: storage 770: network interface
780: network

Claims (20)

Receiving broadcast information corresponding to a hybrid broadcast service using a broadcast network and a communication network;
Generating at least one signaling data corresponding to each of the broadcasting network and the communication network based on the broadcasting information; And
Transmitting the at least one signaling data to a plurality of component devices for providing the hybrid broadcast service,
The at least one signaling data is repeatedly transmitted and updated to at least one of the plurality of component devices based on a predetermined update period of the signaling data,
The generating step,
Generating low level signaling (LLS) data corresponding to an IP packet type including at least one of a service list table (SLT) and a rating region table (RRT); And
Generating service layer signaling (SLS) data to include at least one of configuration information corresponding to the plurality of component devices, content acquisition information corresponding to the hybrid broadcast service, and performance of a receiver. Method of transmitting signaling data of hybrid broadcast service. The method according to claim 1,
The transmitting step
Transmitting LLS (Low Level Signaling) data corresponding to the broadcasting network among the at least one signaling data to a first component device corresponding to the broadcasting network among the plurality of component apparatuses; And
Transmitting service layer signaling (SLS) data corresponding to the communication network among the at least one signaling data to a second component device corresponding to the communication network among the plurality of component devices;
Signaling data transmission method of a hybrid broadcast service comprising a. delete The method according to claim 1,
The LLS data is
The signaling data transmission method of the hybrid broadcast service corresponding to the IP (Internet Protocol) level signaling data, and is transmitted to the receiver receiving the hybrid broadcast service before the SLS data. delete The method according to claim 1,
The SLS data is
And a fragment according to a transport protocol scheme corresponding to the hybrid broadcast service, and is transmitted based on a session generated according to the transport protocol scheme. The method according to claim 2,
The signaling data transmission method
And storing the broadcast information and the at least one signaling data. The method according to claim 7,
The broadcast information
And at least one of broadcast service information corresponding to the plurality of component devices and transmission schedule information for each of the plurality of component devices. The method according to claim 8,
The transmitting step
And generating the transmission processing command corresponding to any one of the LLS data and the SLS data based on the transmission schedule information to transmit the at least one signaling data. delete A receiver configured to receive broadcast information corresponding to the hybrid broadcast service;
A signaling data generation unit generating at least one signaling data corresponding to each of a broadcasting network and a communication network based on the broadcasting information; And
A signaling data transmitter for transmitting the at least one signaling data to a plurality of component devices for providing the hybrid broadcast service;
The at least one signaling data is repeatedly transmitted and updated to at least one of the plurality of component devices based on a predetermined update period of the signaling data,
The at least one signaling data includes low level signaling (LLS) data or service layer signaling (SLS) data.
The signaling data generation unit generates the LLS data in accordance with an IP packet type including at least one of a service list table (SLT) and a rating region table (RRT), and configuration information corresponding to the plurality of component devices. And generating the SLS data to include at least one of content acquisition information corresponding to a hybrid broadcast service and performance of a receiver. The method according to claim 11,
The signaling data transmission unit
An LLS data transmitter for transmitting LLS (Low Level Signaling) data corresponding to the broadcasting network among the at least one signaling data to a first component apparatus corresponding to the broadcasting network among the plurality of component apparatuses; And
SLS data transmission unit for transmitting Service Layer Signaling (SLS) data corresponding to the communication network of the at least one signaling data to a second component device corresponding to the communication network of the plurality of component devices
Signaling data transmission device of the hybrid broadcast service, characterized in that it comprises a. delete The method according to claim 12,
The LLS data is
An apparatus for transmitting signaling data of a hybrid broadcast service, which corresponds to IP (Internet Protocol) level signaling data and is transmitted to the receiver receiving the hybrid broadcast service before the SLS data. delete The method according to claim 14,
The SLS data is
And a fragment according to a transport protocol scheme corresponding to the hybrid broadcast service, and is transmitted based on a session generated according to the transport protocol scheme. The method according to claim 12,
The signaling data transmission device
And a signaling database configured to store the broadcast information and the at least one signaling data. The method according to claim 17,
The broadcast information
And at least one of broadcast service information corresponding to the plurality of component devices and transmission schedule information for each of the plurality of component devices. The method according to claim 18,
The signaling data transmission unit
And transmitting the at least one signaling data by generating a transmission processing command corresponding to one of the LLS data and the SLS data based on the transmission schedule information. delete
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Title
곽민성, "ATSC 3.0 차세대 하이브리드 방송시스템의 전송과 서비스 구성 및 시그널링 방안", 방송과 미디어 제20권 제4호, pp.58-66, 2015.10(2015.10.31.) 1부.*

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