WO2016181806A1 - Dispositif d'émission, procédé d'émission, dispositif de réception et procédé de réception - Google Patents

Dispositif d'émission, procédé d'émission, dispositif de réception et procédé de réception Download PDF

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Publication number
WO2016181806A1
WO2016181806A1 PCT/JP2016/062881 JP2016062881W WO2016181806A1 WO 2016181806 A1 WO2016181806 A1 WO 2016181806A1 JP 2016062881 W JP2016062881 W JP 2016062881W WO 2016181806 A1 WO2016181806 A1 WO 2016181806A1
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Prior art keywords
plp
information
transmission
channel
transmitted
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PCT/JP2016/062881
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English (en)
Japanese (ja)
Inventor
高橋　和幸
ロックラン ブルース マイケル
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ソニー株式会社
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Publication of WO2016181806A1 publication Critical patent/WO2016181806A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2385—Channel allocation; Bandwidth allocation
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream

Definitions

  • the present technology relates to a transmission device, a transmission method, a reception device, and a reception method, and in particular, when channel bonding is performed, a transmission device, a transmission method, a reception device, which can perform more flexible operation, And a receiving method.
  • channel bonding In digital broadcasting, channel bonding (Channel bonding) is known in which multiple channels are combined and used.
  • PLP bundling PLP (Physical Layer Pipe) bundling
  • PLP Physical Layer Pipe
  • channel bonding is expected to be adopted in the next generation ATSC (Advanced Television Systems Committee) standard called ATSC3.0.
  • ATSC Advanced Television Systems Committee
  • the present technology has been made in view of such a situation, and enables a more flexible operation when channel bonding is performed.
  • the transmission device includes a first information including channel selection information for each PLP (Physical Layer Pipe) included in a target frequency band for channel bonding that is used by combining a plurality of frequency bands.
  • a transmission unit that generates transmission information including at least information indicating whether or not control information is transmitted, and the transmission information is included in second control information arranged in a physical layer frame by the channel bonding.
  • the transmission device according to the first aspect of the present technology may be an independent device, or may be an internal block constituting one device.
  • a transmission method according to the first aspect of the present technology is a transmission method corresponding to the transmission device according to the first aspect of the present technology described above.
  • first information including channel selection information is included for each PLP included in a frequency band targeted for channel bonding in which a plurality of frequency bands are combined and used.
  • Transmission information including at least information indicating whether or not the control information is transmitted is generated, and the transmission information is transmitted by being included in the second control information arranged in the frame of the physical layer by the channel bonding. .
  • first control information including information on channel selection is transmitted for each PLP included in a channel bonding target frequency band that is used by combining a plurality of frequency bands.
  • the receiving device may be an independent device, or may be an internal block constituting one device.
  • the reception method according to the second aspect of the present technology is a reception method corresponding to the reception device according to the second aspect of the present technology described above.
  • first information including channel selection information is included for each PLP included in a frequency band to be channel bonded using a plurality of frequency bands.
  • more flexible operation can be performed when channel bonding is performed.
  • FIG. It is a figure which shows the example of a description of this technical descriptor of the operation example 2.
  • FIG. It is a figure which shows the example of the syntax of L1-post signaling information. It is a figure which shows the structural example of a transmitter. It is a figure which shows the structural example of a receiver. It is a flowchart explaining a transmission process. It is a flowchart explaining a reception process. It is a figure which shows the structural example of a computer.
  • FIG. 1 is a diagram illustrating a configuration of an embodiment of a transmission system to which the present technology is applied.
  • a system refers to a logical collection of a plurality of devices.
  • the transmission system 1 includes a transmission device 10 and a reception device 20.
  • data transmission conforming to a digital broadcasting standard such as ATSC3.0 is performed.
  • the transmission apparatus 10 transmits (transmits) a stream of video, audio, captions, and the like (components thereof) constituting content such as a TV program as a digital broadcast signal via the transmission path 30.
  • the receiving device 20 receives a digital broadcast signal transmitted (transmitted) from the transmitting device 10 via the transmission path 30, acquires and processes a stream of video, audio, subtitles, and the like (components thereof), and Output video and audio of content such as TV programs.
  • the transmission line 30 for example, a terrestrial wave, a satellite line, a cable television network (wired line), or the like can be used.
  • IP / UDP packet that is, an IP (Internet Protocol) packet including a UDP (User Datagram Protocol) packet, instead of a TS (Transport Stream) packet for data transmission.
  • IP Internet Protocol
  • UDP User Datagram Protocol
  • TS Transport Stream
  • LLS Link Layer Signaling
  • SLS Service Layer Signaling
  • the LLS signaling information includes metadata such as SLT (Service List Table), EAD (Emergency Alerting Description), RRD (Region Rating Rating), and the like.
  • SLT includes information indicating the configuration of a stream or service in the broadcast network, such as information related to service tuning.
  • EAD contains information about emergency alerts.
  • RRD contains information about the rating.
  • SLS signaling information includes metadata such as USD (User Service Description), MPD (Media Presentation Description), LSID (LCT Session Instance Description), for example.
  • the USD includes information such as another metadata acquisition destination.
  • MPD is control information for managing the playback of component streams.
  • LSID is control information of the ROUTE (Real-time Object Delivery over Unidirectional Transport) protocol.
  • ATSC 3.0 is expected to adopt channel bonding that combines and uses multiple channels (frequency bands), and various operation modes using channel bonding are assumed.
  • transmission information including information indicating presence / absence of LLS signaling information (e.g., SLT), a layer lower than a layer (physical layer) where the LLS signaling information is transmitted
  • LLS signaling information e.g., SLT
  • a frequency hopping method that changes the frequency band to be used every predetermined time may be employed for the purpose of fading countermeasures.
  • DVB-T2 Digital Video Broadcasting-Second Generation Terrestrial
  • TFS Time Frequency Slicing
  • this frequency hopping method is also expected to be used in ATSC 3.0 channel bonding.
  • PLP Physical Layer Layer
  • FIG. 2 is a diagram illustrating an example of the syntax of the technical descriptor when the PLP is statically operated.
  • 2-bit NUM_RF indicates the number of frequency bands (channels) when channel bonding is performed.
  • channel bonding can be performed using a maximum of four frequency bands.
  • the frequency band loop is repeated according to the number of frequency bands indicated by NUM_RF.
  • a PLP loop corresponding to PHYSICAL_RF_ID, FREQUENCY, and NUM_PLP is arranged.
  • ⁇ 2-bit PHYSICAL_RF_ID is an identifier unique to the frequency band of the physical layer. In 32-bit FREQUENCY, the frequency is specified in Hz.
  • NUM_PLP indicates the number of PLPs that can be arranged in one frequency band.
  • ATSC 3.0 stipulates that up to 64 PLPs can be arranged in one frequency band (for example, a 6 MHz frequency band corresponding to one channel).
  • NUM_PLP the PLP loop is repeated according to the number of PLPs indicated by NUM_PLP.
  • ⁇ 6-bit PLP_ID is an identifier unique to PLP.
  • the 8-bit PLP_GROUP_ID is an ID for identifying a group to which the target PLP belongs (hereinafter referred to as a PLP group).
  • PLP_GROUP_ID is represented by a bitmap structure in which a PLP group is assigned to each bit in an 8-bit bit string. Accordingly, among the 8 bits, each bit from the least significant bit (LSB: Least Significant Bit) to the most significant bit (MSB: Most Significant Bit) can be assigned to the PLP group 1 to the PLP group 8 in order.
  • the PLP_GROUP_ID has been described as having 8 bits, but the number of bits allocated to the PLP_GROUP_ID is arbitrary.
  • 16 PLP groups can be set by increasing the number of bits allocated to PLP_GROUP_ID by 1 byte and allocating 16 bits.
  • Fig. 3 is a diagram showing an example of syntax of this technical descriptor when PLP is dynamically operated.
  • PHYSICAL_RF_ID, FREQUENCY, and NUM_PLP in the frequency band loop and PLP_ID, LLS_EXIST_FLAG, PLP_GROUP_ID, and CHANNEL_BONDING_FORMAT in the PLP loop are the same as in the static case of FIG.
  • the 80-bit PLP_SWITCH_TIMING is time information indicating the time when the target PLP is switched when the target PLP is dynamically operated, that is, the time when the configuration of the target PLP is changed.
  • time information for example, PTP (Precision Time Protocol) defined in IEEE (Institute of Electrical and Electronic Engineers) 1588 can be used.
  • PTP is an example of time information, and other time information such as NTP (Network Time Protocol) may be used.
  • Fig. 4 shows a specific description example of this technical descriptor.
  • ATSC3.0 stipulates that channel bonding be performed using a maximum of four frequency bands.
  • NUM_RF "2" is set and PHYSICAL_RF_ID for identifying the frequency band is set.
  • 0 to 1 are set.
  • ATSC 3.0 stipulates that a maximum of 64 PLPs can be placed in one frequency band, but in the example of FIG. 4, the frequency band of PHYSICAL_RF_ID that is “0”
  • NUM_PLP “2” is set in the frequency band of PHYSICAL_RF_ID that is “1”, and a value of 0 to 1 is set as PLP_ID.
  • LLS_EXIST_FLAG and N_LLS_EXIST_FLAG indicate that LLS signaling information exists in the target PLP when “1” is set, and LLS signaling information exists in the target PLP when “0” is set. Indicates that no.
  • PLP_GROUP_ID has a bitmap structure in which a PLP group is assigned to each bit in an 8-bit bit string, and PLP group 1 is assigned to each bit from the least significant bit to the most significant bit among the 8 bits. To PLP group 8. Furthermore, when dynamic is set to "1", it indicates that the target PLP is dynamically operated. When "0" is set, the target PLP is statically operated. It shows that.
  • the frequency band of PHYSICAL_RF_ID that is “i” is described as RF channel #i.
  • PLP # ij is described, “i” represents PHYSICAL_RF_ID, and “j” represents PLP_ID.
  • PLP # 00 identified by the PHYSICAL_RF_ID which is “0” and the PLP_ID which is “0” belongs to the PLP group 1 and is dynamically operated. At present, the LLS signaling information is present. Although transmitted, the LLS signaling information is not transmitted at the next time t1.
  • PLP # 10 identified by PHYSICAL_RF_ID which is “1” and PLP_ID which is “0” belongs to the same PLP group 1 as PLP # 00 and is dynamically operated. At present, the LLS signaling information is not transmitted, and the LLS signaling information is transmitted after the next time t1.
  • the target PLP is changed from PLP # 00 at time t1.
  • the PLP for transmitting LLS signaling information is also switched from PLP # 00 to PLP # 10.
  • PLP # 01 identified by PHYSICAL_RF_ID which is “0” and PLP_ID which is “1” belongs to PLP group 2 and is dynamically operated, but at present, LLS signaling information is transmitted.
  • the LLS signaling information is transmitted after the next time t2.
  • PLP # 11 identified by PHYSICAL_RF_ID which is “1” and PLP_ID which is “1” belongs to the same PLP group 2 as PLP # 01 and is dynamically operated.
  • the LLS signaling information is transmitted, but at the next time t2, the LLS signaling information is not transmitted.
  • the target PLP is changed from PLP # 11 at time t2.
  • the PLP for transmitting LLS signaling information is also switched from PLP # 11 to PLP # 01.
  • PLP # 02 identified by PHYSICAL_RF_ID that is "0" and PLP_ID that is "2" is composed of a single PLP without belonging to the PLP group, and is operated statically.
  • the LLS signaling information is always transmitted.
  • FIG. 5 is a diagram showing a system pipe model of operation example 1 corresponding to an operation mode when PLP is operated statically.
  • PLP # 00 with PLP_ID being “0”, PLP # 01 with PLP_ID being “1”, and “2” PLP_02 of PLP_ID is included.
  • PLP # 00 carries streams of NTP (Network Time Protocol), service channel (service), and ESG (Electronic Service Guide) service.
  • NTP Network Time Protocol
  • service service channel
  • ESG Electronic Service Guide
  • the service channel stream includes SLS signaling information and video, audio, and subtitle (components) streams.
  • the SLS signaling information is signaling information for each service channel such as USD or MPD.
  • NTP is time information.
  • ESG is an electronic service guide.
  • a service channel and a stream of LLS signaling information are transmitted.
  • This service channel stream includes a robust audio stream having high robustness.
  • NTP NTP
  • service channel In PLP # 02, NTP, service channel, and LLS signaling information stream are transmitted.
  • the service channel stream includes SLS signaling information, and video and audio (components) streams.
  • RF channel # 1 includes PLP # 10 having a PLP_ID of “0”.
  • PLP # 10 a service channel stream is transmitted.
  • the service channel stream includes video, audio, and subtitle (components) streams.
  • PLP # 00 In RF channel # 0 and RF channel # 1 combined by channel bonding, different service channel streams are transmitted in PLP # 00, PLP # 01, and PLP # 10, respectively. It belongs to PLP group 1. That is, in this PLP group 1, since the stream of LLS signaling information is transmitted by PLP # 01, the receiving device 20 can acquire the SLT therefrom and hold it as channel selection information.
  • the receiving device 20 can acquire the SLS signaling information transmitted by PLP # 00 based on the channel selection information (SLT).
  • the SLS signaling information includes information for connecting to the component streams included in the service channels of PLP # 01 and PLP # 10 in addition to the component streams included in the service channel of PLP # 00.
  • the reception device 20 reproduces ultra-high-definition video (for example, 4K resolution or 8K resolution) content composed of components included in different service channels, or reproduces robust audio content. Can do.
  • ultra-high-definition video for example, 4K resolution or 8K resolution
  • PLP # 00, PLP # 01, and PLP # 10 belong to the same PLP group 1, but the stream of SLS signaling information is transmitted by PLP # 00, and the component stream is PLP # 00 and PLP # 10 are transmitted, and LLS signaling information and a robust audio stream are transmitted by PLP # 01. That is, the PLP group 1 groups signaling information and component streams related to a specific service across RF channels (frequency bands).
  • PLP # 02 does not belong to the PLP group and is configured as a single PLP.
  • PLP # 02 that does not belong to this PLP group LLS signaling information and SLS signaling information are transmitted. That is, when a service channel is selected, the receiving device 20 can play back content by connecting to a component stream based on LLS signaling information and SLS signaling information transmitted by PLP # 02.
  • PLP # 02 does not belong to the PLP group and is configured as a single PLP, all signaling information and component streams are transmitted by PLP # 02.
  • PLP # 02 in which PHYSICAL_RF_ID that is “0” and PLP_ID that is “2” is set, LLS signaling information is transmitted, and therefore, “1” is set in LLS_EXIST_FLAG.
  • PLP # 10 in which PHYSICAL_RF_ID which is “1” and PLP_ID which is “0” is set, LLS signaling information is not transmitted, and therefore, “0” is set in LLS_EXIST_FLAG.
  • PLP_GROUP_ID indicates that they all belong to PLP group 1. "Is set. On the other hand, since PLP # 02 does not belong to the PLP group and is a single PLP, “0000 0000” is set in PLP_GROUP_ID.
  • the technology descriptor in FIG. 6 is transmitted in the physical layer frame (L1 signaling information), so that the receiving device 20 can receive the technology descriptor in FIG.
  • L1 signaling information For example, in channel bonding in which RF channel # 0 and RF channel # 1 are combined, PLP # 01 among PLP # 00, PLP # 01, and PLP # 10 belonging to PLP group 1 It can be recognized that LLS signaling information is transmitted.
  • the receiving device 20 uses, for example, PLP # 02 configured as a single PLP in channel bonding in which RF channel # 0 and RF channel # 1 are combined. , It can be recognized that the LLS signaling information is transmitted.
  • PLP_GROUP_ID information for grouping arbitrary PLPs when a plurality of PLPs can be arranged in one frequency band is specified.
  • signaling information for example, LLS signaling information
  • PLPs that are present and PLPs that are not transmitted there are PLPs that are not transmitted.
  • the present technology descriptor (FIG. 6) transmits information (LLS_EXIST_FLAG) indicating whether or not signaling information transmitted in a layer higher than the physical layer is transmitted in a physical layer frame (L1 signaling information). ), The receiving device 20 can recognize whether LLS signaling information (for example, SLT) is transmitted in each PLP by analyzing the content of the technical descriptor. .
  • LLS signaling information for example, SLT
  • the receiving device 20 can recognize the presence of LLS signaling information (for example, SLT) across the combined channels in a plurality of channels (frequency bands) combined by channel bonding.
  • LLS signaling information for example, SLT
  • channel bonding when channel bonding is performed, for example, it is possible to flexibly cope with various operation forms such as sharing a specific component by multiple services or grouping multiple PLPs. be able to.
  • the receiving device 20 can recognize the presence of signaling information transmitted in a layer higher than the physical layer at the time of acquiring the present technology descriptor in FIG. 6, the target signaling information can be quickly acquired. , Processing time can be shortened. For example, in the receiving device 20, the channel selection process can be facilitated.
  • FIG. 7 is a diagram illustrating a system pipe model of the operation example 2 corresponding to the operation mode when the PLP is dynamically operated.
  • RF channel # 0 transmits PLP_00 with PLP_ID “0” and PLP # 01 with PLP_ID “1”. Also, among the RF channels, in the RF channel # 1, PLP # 10 having a PLP_ID of “0” and PLP # 11 having a PLP_ID of “1” are transmitted.
  • PLP # 00 and PLP # 10 belong to PLP group 1
  • PLP # 01 and PLP # 11 belong to PLP group 2.
  • the PLP is dynamically operated.
  • the PLP group 1 is From time t0 to time t1, PLP # 00 of RF channel # 0 is used, and from time t1 to time t2, PLP # 10 of RF channel # 1 is used.
  • PLP group 1 uses PLP # 00 of RF channel # 0 from time t2 to time t3, and uses PLP # 10 of RF channel # 1 from time t3 to time t4, and from time t4 to time t5.
  • the PLP used in the PLP group 1 is changed to the PLP # 00 of the RF channel # 0 and the PLP of the RF channel # 1 at predetermined time intervals. It is switched alternately with # 10. Therefore, the receiving device 20 acquires signaling information, components, and the like transmitted by the target PLP in the PLP group 1 that are switched at predetermined time intervals.
  • PLP group 2 changes PLP # 11 of RF channel # 1 from time t0 to time t2.
  • PLP # 01 of RF channel # 0 is used.
  • PLP group 2 uses PLP # 11 of RF channel # 1 from time t4 to time t5.
  • the PLP used in the PLP group 2 is changed to the PLP # 11 of the RF channel # 1 and the PLP of the RF channel # 0 at every predetermined time. It is switched alternately with # 01. Therefore, the receiving device 20 acquires signaling information, components, and the like transmitted by the target PLP in the PLP group 2 that are switched at predetermined time intervals.
  • FIG. 9 illustrates an example of description of the present technology descriptor at time tx between time t0 and time t1 in FIG.
  • operation example 2 represents an operation mode when PLP is dynamically operated
  • “1” is set as dynamic for all PLPs in this technical descriptor of FIG. 9.
  • N_LLS_EXIST_FLAG and PLP_SWITCH_TIMING are set.
  • PHYSICAL_RF_ID which is “0” PLP # 00 in which PLP_ID which is “0” is set, PHYSICAL_RF_ID which is “1”, and PLP # 10 in which PLP_ID which is “0” are set. Since both belong to the same PLP group 1, both “0000 0001” are set.
  • N_LLS_EXIST_FLAG is set to “0”. Yes.
  • PLP group 1 uses PLP # 10 of RF channel # 1 at the next time t1
  • N_LLS_EXIST_FLAG is set to "1" Has been.
  • PHYSICAL_RF_ID that is “0”
  • PLP # 01 that is set to PLP_ID that is “1”
  • PHYSICAL_RF_ID that is “1”
  • PLP # 11 that is set to PLP_ID that is “1” Since they belong to the same PLP group 2, both “0000 0010” are set.
  • PLP group 2 since PLP group 2 does not use PLP # 01 of RF channel # 0 at time tx, LLP signaling information is not transmitted in PLP # 01, and “0” is set in LLS_EXIST_FLAG. Is set. On the other hand, since PLP group 2 uses PLP # 11 of RF channel # 1 at time tx, LLS signaling information is transmitted in PLP # 11, and "1" is set in LLS_EXIST_FLAG. Has been.
  • N_LLS_EXIST_FLAG is set to "1”. ing.
  • PLP group 2 since PLP group 2 does not use PLP # 11 of RF channel # 1, PLS # 11 does not transmit LLS signaling information, and N_LLS_EXIST_FLAG is set to “0”. ing.
  • the presence / absence of transmission of LLS signaling information at the current time point and the time point indicated by PLP_SWITCH_TIMING is shown, but further, LLS signaling information at three or more time points such as the next time point. The presence or absence of transmission may be indicated.
  • the technology descriptor in FIG. 9 is transmitted in the physical layer frame (L1 signaling information), so that the reception device 20 can receive the technology descriptor in FIG.
  • LLS signaling information is transmitted by PLP # 00 among PLP # 00 and PLP # 10 belonging to PLP group 1. I can recognize that.
  • the receiving device 20 recognizes that the LLS signaling information is transmitted by PLP # 11 among PLP # 01 and PLP # 11 belonging to PLP group 2 at the time of obtaining the present technology descriptor of FIG. can do.
  • PLP_GROUP_ID information for grouping arbitrary PLPs when a plurality of PLPs can be arranged in one frequency band is specified.
  • signaling information for example, LLS signaling information
  • PLPs that are present and PLPs that are not transmitted there are PLPs that are not transmitted.
  • the present technology descriptor (FIG. 9) transmits information (LLS_EXIST_FLAG) indicating whether or not signaling information transmitted in a layer higher than the physical layer is transmitted in the physical layer frame (L1 signaling information). ), The receiving device 20 can recognize whether LLS signaling information (for example, SLT) is transmitted in each PLP by analyzing the content of the technical descriptor. .
  • LLS signaling information for example, SLT
  • the receiving apparatus 20 when a frequency hopping scheme is adopted in a plurality of channels (frequency bands) combined by channel bonding, the presence of LLS signaling information (for example, SLT) across the combined channels. Can be recognized.
  • LLS signaling information for example, SLT
  • channel bonding when channel bonding is performed, for example, it is possible to flexibly cope with various operation forms such as sharing a specific component by multiple services or grouping multiple PLPs. be able to.
  • the receiving device 20 can recognize the presence of signaling information transmitted in a layer higher than the physical layer at the time of acquiring the present technology descriptor in FIG. 9, the target signaling information can be quickly acquired. , Processing time can be shortened. For example, in the receiving device 20, the channel selection process can be facilitated.
  • FIG. 10 is a diagram illustrating an example of the syntax of L1-post signaling information corresponding to ATSC 3.0, which is arranged in the preamble of the physical layer frame.
  • the loop corresponding to NUM_RF_CH_BUNDLED of the L1-post signaling information corresponds to the loop corresponding to NUM_RF of the technical descriptor of FIG.
  • RF_INDEX of L1-post signaling information and BUNDLED_FREQUENCY correspond to PHYSICAL_RF_ID and FREQUENCY of the present technology descriptor in FIG. 10, and other contents (items in the PLP loop) of the present technology descriptor in FIG. It will be newly added.
  • transmission information can be arranged in the preamble of the physical layer frame and the preamble of the data part.
  • the transmission information included in the L1-post signaling information is arranged in the preamble of the physical layer frame for each frequency band targeted for channel bonding.
  • FIG. 10 shows the case where the content of the technical descriptor is described in a loop corresponding to NUM_RF_CH_BUNDLED of the L1-post signaling information.
  • the arrangement in the L1-post signaling information is an example.
  • it may be arranged in other L1 signaling information.
  • FIG. 10 shows the present technology descriptor (FIG. 2) when the PLP is operated statically as the present technology descriptor, but the present technology descriptor (when the PLP is dynamically operated) Similarly, in the case of FIG. 3), it can be arranged in L1-post signaling information or the like.
  • FIG. 11 is a diagram illustrating a configuration example of the transmission device 10 of FIG.
  • the transmission device 10 includes a control unit 101, a component acquisition unit 102, an encoder 103, a signaling generation unit 104, a signaling processing unit 105, a packet generation unit 106, a physical layer frame generation unit 107, and a transmission unit 108. Is done.
  • the control unit 101 controls the operation of each unit of the transmission device 10.
  • the component acquisition unit 102 acquires data such as video, audio, and subtitles (components) constituting content (for example, a television program) provided by a specific service, and supplies the acquired data to the encoder 103.
  • the encoder 103 encodes data (components) such as video and audio supplied from the component acquisition unit 102 according to a predetermined encoding method, and supplies the encoded data to the packet generation unit 106.
  • the corresponding content is acquired from the storage location of the already recorded content according to the broadcast time zone, or the live content is acquired from the studio or location location.
  • the signaling generation unit 104 acquires raw data for generating signaling information from an external server or a built-in storage.
  • the signaling generation unit 104 generates signaling information using raw data of signaling information.
  • L1 signaling information and the like are generated as signaling information.
  • L1-post signaling information is generated as the L1 signaling information.
  • transmission information including information such as the presence / absence of transmission of LLS signaling information, which is defined as the technical descriptor (FIG. 2 or FIG. 3), is arranged (FIG. 10). .
  • LLS signaling information and SLS signaling information are supplied to the packet generation unit 106, and L1 signaling information such as L1-post signaling information is supplied to the physical layer frame generation unit 107.
  • the packet generation unit 106 generates an IP packet (IP / UDP packet) using data such as video and audio (components) supplied from the encoder 103 and signaling information supplied from the signaling processing unit 105. Further, the packet generation unit 106 encapsulates one or a plurality of IP packets to generate a generic packet and supplies it to the physical layer frame generation unit 107.
  • IP / UDP packet IP / UDP packet
  • the LLS signaling information can be stored in, for example, a generic packet payload or an IP / UDP packet.
  • the physical layer frame generation unit 107 generates a physical layer frame by encapsulating a plurality of generic packets supplied from the packet generation unit 106 and supplies the generated physical layer frame to the transmission unit 108.
  • L1 signaling information such as L1-post signaling information supplied from the signaling processing unit 105 is arranged in the preamble.
  • the L1-post signaling information (FIG. 10) includes transmission information defined as this technology descriptor (FIG. 2 or FIG. 3), this transmission information is included in the preamble of the physical layer frame. Will be placed.
  • the transmission unit 108 performs, for example, OFDM (Orthogonal Frequency Division Multiplexing) modulation on the physical layer frame supplied from the physical layer frame generation unit 107, and transmits it as a digital broadcast signal via the antenna 111.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the transmission device 10 has a channel bonding function, and a digital broadcast signal is transmitted using a plurality of frequency bands combined by channel bonding. Moreover, the transmission apparatus 10 has a function of a frequency hopping method, and when the PLP is dynamically operated, the PLP to be used is changed every predetermined time.
  • the signaling generation unit 104 has been described as generating signaling information.
  • the packet generation unit 106 or the physical layer frame generation unit 107 may generate the signaling information.
  • the packet generator 106 can generate LLS signaling information or SLS signaling information and store it in the packet.
  • the physical layer frame generation unit 107 can generate L1 signaling information such as L1-post signaling information and arrange it in the physical layer frame.
  • the transmission device 10 of FIG. 11 it is not necessary that all the functional blocks are physically disposed in a single device, and at least some of the functional blocks are physically independent from other functional blocks. It may be configured as a device.
  • FIG. 12 is a diagram illustrating a configuration example of the receiving device 20 in FIG.
  • the receiving device 20 includes a control unit 201, a receiving unit 202, a physical layer frame processing unit 203, a packet processing unit 204, a signaling processing unit 205, a decoder 206, a display unit 207, and a speaker 208.
  • the control unit 201 controls the operation of each unit of the receiving device 20.
  • the receiving unit 202 receives a digital broadcast signal transmitted from the transmission device 10 using channel bonding via the antenna 211, performs processing such as OFDM demodulation, and the physical layer frame obtained thereby is received. To the physical layer frame processing unit 203. However, when the PLP is dynamically operated in the transmission apparatus 10, the PLP to be used is changed every predetermined time.
  • the physical layer frame processing unit 203 performs processing on the physical layer frame supplied from the receiving unit 202, extracts a generic packet, and supplies it to the packet processing unit 204. Further, the physical layer frame processing unit 203 acquires L1 signaling information such as L1-post signaling information arranged in the preamble of the physical layer frame, and supplies it to the signaling processing unit 205.
  • the packet processing unit 204 performs processing on the generic packet supplied from the physical layer frame processing unit 203. Also, the packet processing unit 204 performs processing on an IP packet (IP / UDP packet) extracted from the generic packet, and extracts signaling information and component data. The signaling information is supplied to the signaling processing unit 205, and the component data is supplied to the decoder 206.
  • IP packet IP / UDP packet
  • the signaling processing unit 205 appropriately processes the signaling information supplied from the physical layer frame processing unit 203 and the packet processing unit 204 and supplies it to the control unit 201.
  • L1 signaling information such as L1-post signaling information, LLS signaling information, SLS signaling information, and the like are processed as signaling information.
  • transmission information including information such as the presence / absence of transmission of LLS signaling information, which is defined as the technical descriptor (FIG. 2 or FIG. 3), is arranged (FIG. 10). .
  • the control unit 201 controls the operation of each unit based on the signaling information supplied from the signaling processing unit 205. For example, the control unit 201 controls processing performed by the physical layer frame processing unit 203 and the packet processing unit 204 based on L1-post signaling information and the like.
  • control unit 201 controls packet filtering performed by the packet processing unit 204 based on LLS signaling information and SLS signaling information, such as video and audio. (Component) data is supplied to the decoder 206.
  • the decoder 206 decodes data (components) such as video and audio supplied from the packet processing unit 204 according to a predetermined decoding method, and supplies the resulting video data to the display unit 207. Audio data is supplied to the speaker 208.
  • the display unit 207 displays video corresponding to the video data supplied from the decoder 206. Further, the speaker 208 outputs sound corresponding to the audio data supplied from the decoder 206. As a result, the receiving device 20 outputs video and audio of content (for example, a television program) provided by the service channel (service) selected by the user.
  • content for example, a television program
  • the signaling information is processed by the signaling processing unit 205, but the physical layer frame processing unit 203 or the packet processing unit 204 may process the signaling information.
  • the physical layer frame processing unit 203 can process L1 signaling information such as L1-post signaling information.
  • the packet processing unit 204 can process LLS signaling information or SLS signaling information.
  • FIG. 12 a configuration in which the display unit 207 and the speaker 208 are incorporated as a case where the receiving device 20 is a fixed receiver such as a television receiver or a mobile receiver such as a smartphone or a tablet terminal.
  • the receiving device 20 is a fixed receiver such as a television receiver or a mobile receiver such as a smartphone or a tablet terminal.
  • a set top box (STB) a display unit 207 and a speaker 208 are provided outside.
  • step S101 the component acquisition unit 102 acquires components such as video and audio.
  • the component data acquired by the component acquisition unit 102 is encoded by the encoder 103.
  • step S102 the signaling generation unit 104 generates signaling information.
  • L1-post signaling information as L1 signaling information, LLS signaling information, SLS signaling information, and the like are generated.
  • step S103 packet / frame generation processing is performed.
  • the packet generator 106 In this packet / frame generation process, the packet generator 106 generates an IP packet (IP / UDP packet) or a generic packet. Further, the physical layer frame generation unit 107 generates a physical layer frame.
  • IP / UDP packet IP / UDP packet
  • the physical layer frame generation unit 107 generates a physical layer frame.
  • transmission information defined as the present technology descriptor (FIG. 2 or FIG. 3) is arranged.
  • step S104 the transmission unit 108 performs processing on the physical layer frame and transmits the digital layer signal via the antenna 111.
  • a digital broadcast signal is transmitted using a plurality of frequency bands coupled by channel bonding.
  • the PLP to be used is changed every predetermined time.
  • reception processing is a process executed when a specific service channel (service) is selected.
  • step S201 the reception unit 202 receives a digital broadcast signal transmitted from the transmission device 10 using channel bonding via the antenna 211.
  • the PLP is dynamically operated in the transmission device 10
  • the PLP used for each predetermined frequency is changed.
  • step S202 packet / frame processing is performed.
  • the physical layer frame processing unit 203 processes the physical layer frame. Further, the packet processing unit 204 performs processing on generic packets and IP packets (IP / UDP packets).
  • step S203 the signaling processing unit 205 processes the signaling information from the physical layer frame processing unit 203 or the packet processing unit 204.
  • the control unit 201 controls the operation of each unit based on the processing result of the signaling information by the signaling processing unit 205.
  • transmission information defined as this technical descriptor (FIG. 2 or FIG. 3) is arranged in the L1-post signaling information (FIG. 10) arranged in the preamble of the physical layer frame.
  • the signaling processing unit 205 supplies the processing result of the L1-post signaling information to the control unit 201.
  • the control unit 201 can recognize the PLP that transmits the LLS signaling information based on the transmission information from the signaling processing unit 205. As a result, the control unit 201 controls the packet processing unit 204, the signaling processing unit 205, and the like to acquire LLS signaling information from a specific PLP among the PLPs belonging to the PLP group that transmits the service channel stream, for example. Can be done.
  • step S204 the control unit 201 controls the operation of each unit based on the signaling information acquired by the signaling processing unit 205, so that the decoder 206 decodes component data such as video and audio.
  • component data such as video and audio.
  • ATSC for example, ATSC3.0
  • ATSC3.0 which is a method adopted in the United States and the like
  • ISDB Integrated Services
  • DVB Digital Video Broadcasting
  • the names of the signaling information such as SLT described above are merely examples, and other names may be used. Even if another name is used as the name of the signaling information, the name is merely changed formally, and the substantial content of the signaling information is not different.
  • the SLT may be referred to as FIT (Fast Information Table).
  • FIG. 15 is a diagram illustrating a hardware configuration example of a computer that executes the above-described series of processing by a program.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • An input / output interface 905 is further connected to the bus 904.
  • An input unit 906, an output unit 907, a recording unit 908, a communication unit 909, and a drive 910 are connected to the input / output interface 905.
  • the input unit 906 includes a keyboard, a mouse, a microphone, and the like.
  • the output unit 907 includes a display, a speaker, and the like.
  • the recording unit 908 includes a hard disk, a nonvolatile memory, and the like.
  • the communication unit 909 includes a network interface or the like.
  • the drive 910 drives a removable medium 911 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.
  • the CPU 901 loads the program recorded in the ROM 902 or the recording unit 908 to the RAM 903 via the input / output interface 905 and the bus 904, and executes the program. A series of processing is performed.
  • the program executed by the computer 900 can be provided by being recorded on a removable medium 911 as a package medium, for example.
  • the program can be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.
  • the program can be installed in the recording unit 908 via the input / output interface 905 by installing the removable medium 911 in the drive 910. Further, the program can be received by the communication unit 909 via a wired or wireless transmission medium and installed in the recording unit 908. In addition, the program can be installed in the ROM 902 or the recording unit 908 in advance.
  • the processing performed by the computer according to the program does not necessarily have to be performed in chronological order in the order described as the flowchart. That is, the processing performed by the computer according to the program includes processing executed in parallel or individually (for example, parallel processing or object processing).
  • the program may be processed by one computer (processor), or may be processed in a distributed manner by a plurality of computers.
  • the present technology can take the following configurations.
  • a generation unit for generating transmission information including at least;
  • a transmission apparatus comprising: a transmission unit configured to transmit the transmission information by including the transmission information in second control information arranged in a frame of the physical layer by the channel bonding.
  • the transmission apparatus according to (1), wherein the transmission information further includes information for identifying a PLP group that is a group of the PLP.
  • Each PLP may belong to one or a plurality of the PLP groups. The transmitting apparatus according to (2).
  • the transmission apparatus (4) The transmission apparatus according to (3), wherein the information for identifying the PLP group has a bitmap structure in which the PLP group is assigned to each bit in a bit string. (5) The transmission apparatus according to (2), wherein the transmission information further includes information regarding the PLP that is dynamically switched when the PLP used for each predetermined time is dynamically switched for each PLP group. (6) The transmission information is Time information indicating the time at which the PLP dynamically switches; and The transmission device according to (5), further including information indicating whether or not the first control information is transmitted in a dynamically switched PLP.
  • the frame of the physical layer is a frame corresponding to the standard of ATSC (Advanced Television Systems Committee) 3.0, and is composed of a preamble and a data part
  • the transmission information included in the second control information is arranged in the preamble in the frame of the physical layer for each frequency band to be channel-bonded.
  • the transmitting device is Transmission information including at least information indicating whether or not first control information including information related to channel selection is transmitted for each PLP included in a frequency band targeted for channel bonding that is used by combining a plurality of frequency bands.
  • a transmission method including a step of transmitting the transmission information by including it in second control information arranged in a frame of a physical layer by the channel bonding.
  • Transmission information including at least information indicating whether or not the first control information including information related to channel selection is transmitted for each PLP included in a frequency band subject to channel bonding used by combining a plurality of frequency bands.
  • a receiving unit for receiving the transmission information included in the second control information arranged in the frame of the physical layer; And a control unit that controls the operation of each unit that processes the transmission stream transmitted by the PLP, based on the first control information acquired according to the transmission information.
  • the receiving apparatus according to (9), wherein the transmission information further includes information for identifying a PLP group that is a group of the PLP.
  • each PLP can belong to one or a plurality of the PLP groups.
  • the information for identifying the PLP group has a bitmap structure in which the PLP group is assigned to each bit in a bit string.
  • the transmission information further includes information regarding the PLP that is dynamically switched when the PLP to be used is dynamically switched for each predetermined time for each PLP group.
  • the transmission information is Time information indicating the time at which the PLP dynamically switches; and The receiving device according to (13), further comprising: information indicating whether or not the first control information is transmitted by a dynamically switched PLP.
  • the physical layer frame is a frame corresponding to the ATSC 3.0 standard, and includes a preamble and a data portion.
  • the transmission information included in the second control information is arranged in the preamble in the frame of the physical layer for each frequency band to be channel-bonded.
  • the receiving device is Transmission information including at least information indicating whether or not the first control information including information related to channel selection is transmitted for each PLP included in a frequency band subject to channel bonding used by combining a plurality of frequency bands. And receiving the transmission information included in the second control information arranged in the frame of the physical layer, A receiving method including a step of controlling an operation of each unit that processes a transmission stream transmitted by the PLP, based on the first control information acquired according to the transmission information.

Abstract

La présente invention concerne un dispositif d'émission, un procédé d'émission, un dispositif de réception et un procédé de réception, grâce auxquels il est possible d'effectuer des opérations de façon plus souple lorsqu'une liaison de canal est effectuée. Le dispositif de réception reçoit des informations de transmission incorporées dans des secondes informations de commande qui sont positionnées dans la trame de la couche physique, lesdites informations de transmission contenant au moins des informations qui indiquent si des premières informations de commande qui comprennent des informations concernant la sélection d'une station sont en train d'être transmises, pour chaque PLP contenu dans le domaine de fréquence pour un maintien de canal qui utilise une pluralité de domaines de fréquence liés les uns aux autres, et commande le fonctionnement de chacune des parties traitant le flux de transmission transmis dans un PLP, sur la base des premières informations de commande acquises selon les informations de transmission. La présente invention peut être utilisée dans des récepteurs TV qui prennent en charge une liaison de canal, par exemple.
PCT/JP2016/062881 2015-05-08 2016-04-25 Dispositif d'émission, procédé d'émission, dispositif de réception et procédé de réception WO2016181806A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010067983A2 (fr) * 2008-12-11 2010-06-17 Lg Electronics, Inc. Procédé de transmission et de réception d’un signal et appareil pour la transmission et la réception d’un signal
JP2013520036A (ja) * 2010-02-26 2013-05-30 パナソニック株式会社 デジタル放送システムにおける物理レイヤシグナリング
US20130219431A1 (en) * 2010-09-14 2013-08-22 Lg Electronics Inc. Apparatus for transmitting broadcasting signal, apparatus for receiving broadcasting signal, and method for transmitting/receiving broadcasting signal through apparatus for transmitting/receiving broadcasting signal
WO2013172550A1 (fr) * 2012-05-10 2013-11-21 Samsung Electronics Co., Ltd. Procédé et appareil de transmission et de réception de flux de données dans des systèmes de télévision numérique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010067983A2 (fr) * 2008-12-11 2010-06-17 Lg Electronics, Inc. Procédé de transmission et de réception d’un signal et appareil pour la transmission et la réception d’un signal
JP2013520036A (ja) * 2010-02-26 2013-05-30 パナソニック株式会社 デジタル放送システムにおける物理レイヤシグナリング
US20130219431A1 (en) * 2010-09-14 2013-08-22 Lg Electronics Inc. Apparatus for transmitting broadcasting signal, apparatus for receiving broadcasting signal, and method for transmitting/receiving broadcasting signal through apparatus for transmitting/receiving broadcasting signal
WO2013172550A1 (fr) * 2012-05-10 2013-11-21 Samsung Electronics Co., Ltd. Procédé et appareil de transmission et de réception de flux de données dans des systèmes de télévision numérique

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Digital Video Broadcasting (DVB) Frame structure channel coding and modulationfor a second generation digital transmission system for cable systems (DVB-C2)", ETSI EN 302 769 V1.2.1, April 2011 (2011-04-01), pages 51 - 58,105, XP055331129 *
ETSI TS 102 991 V1.2.1, June 2011 (2011-06-01), XP055331133 *
GOMEZ-BARQUERO, DAVID ET AL.: "DVB-NGH: The Next Generation of Digital Broadcast Services to Handheld Devices", IEEE TRANSACTIONS ON BROADCASTING, vol. 60, no. 2, June 2014 (2014-06-01), pages 246 - 257, XP011549840 *

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