WO2016181807A1

WO2016181807A1 - Transmission device, transmission method, receiving device and receiving method

Info

Publication number: WO2016181807A1
Application number: PCT/JP2016/062882
Authority: WO
Inventors: 高橋　和幸; 山岸　靖明
Original assignee: ソニー株式会社
Priority date: 2015-05-08
Filing date: 2016-04-25
Publication date: 2016-11-17

Abstract

The present invention pertains to a transmission device, transmission method, receiving device and receiving method, with which it is possible to perform operations more flexibly when channel bonding is performed. When channel bonding is performed using a plurality of frequency domains bonded to one another, the receiving device receives a transmission stream that includes correspondence information that associates first identification information prescribed in a physical layer and that is used, when the PLP used is dynamically switched each predetermined period of time, with second identification information prescribed higher in the hierarchy than the physical layer, and controls the operation of each of the parts that process the transmission stream on the basis of the first identification information associated with the second identification information, specified by the correspondence information. The present invention may be used in TV receivers that support channel bonding, for example.

Description

Transmission device, transmission method, reception device, and reception method

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.

In digital broadcasting, channel bonding (Channel bonding) is known in which multiple channels are combined and used. For example, in the DVB-C2 (Digital Video Broadcasting-Cable Second Generation) standard, PLP bundling (PLP (Physical Layer Pipe) bundling) is defined as one of channel bonding (for example, see Non-Patent Document 1). .

Also, channel bonding is expected to be adopted in the next generation ATSC (Advanced Television Systems Committee) standard called ATSC3.0.

By the way, in digital broadcasting standards such as ATSC 3.0, there is a demand for technology for more flexible operation when channel bonding is performed.

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 according to the first aspect of the present technology, when performing channel bonding using a combination of a plurality of frequency bands, when a PLP (Physical Layer Layer) to be used is dynamically switched every predetermined time. A generating unit configured to generate correspondence information that associates first identification information defined in a physical layer and second identification information defined in a layer higher than the physical layer, and the channel bonding. And a transmission unit that transmits a transmission stream including the correspondence information.

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.

In the transmission device and the transmission method according to the first aspect of the present technology, when performing channel bonding using a combination of a plurality of frequency bands, the PLP to be used is dynamically switched every predetermined time. Correspondence information in which the first identification information defined in the physical layer and the second identification information defined in the hierarchy higher than the physical layer are associated with each other is generated, and by the channel bonding, A transmission stream including the correspondence information is transmitted.

The receiving apparatus according to the second aspect of the present technology is a physical layer that is used when a PLP to be used is dynamically switched every predetermined time when performing channel bonding using a combination of a plurality of frequency bands. A receiving unit that receives a transmission stream that includes correspondence information in which the first identification information defined in the above is associated with the second identification information defined in a layer higher than the physical layer, and the correspondence information And a control unit that controls the operation of each unit that processes the transmission stream based on the first identification information corresponding to the second identification information that is specified.

The receiving device according to the second aspect of the present technology 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.

In the receiving device and the receiving method according to the second aspect of the present technology, when performing channel bonding using a combination of a plurality of frequency bands, the PLP to be used is dynamically switched every predetermined time A transmission stream including correspondence information in which the first identification information defined in the physical layer and the second identification information defined in a layer higher than the physical layer are associated with each other is received, Based on the first identification information corresponding to the second identification information specified by the correspondence information, the operation of each unit that processes the transmission stream is controlled.

According to the first aspect and the second aspect of the present technology, more flexible operation can be performed when channel bonding is performed.

It should be noted that the effects described here are not necessarily limited, and may be any of the effects described in the present disclosure.

It is a figure showing the composition of the 1 embodiment of the transmission system to which this art is applied. It is a figure which shows the example of the syntax of PRT. It is a figure which shows the system pipe model of the example 1 of operation. It is a figure explaining the dynamic switching of PLP in the example 1 of operation. 10 is a diagram illustrating a description example of a PRT in an operation example 1. FIG. It is a figure which shows the system pipe model of the example 2 of operation. It is a figure explaining the dynamic switching of PLP in the operation example 2. FIG. 10 is a diagram illustrating a description example of a PRT in an operation example 2. FIG. It is a figure explaining the concept of the layer structure corresponding to ATSC3.0. 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.

Hereinafter, embodiments of the present technology will be described with reference to the drawings. The description will be made in the following order.

1. 1. System configuration 2. Outline of this technology Operation example (1) Operation example 1: Operation mode when PLP is operated statically (2) Operation example 2: Operation mode when PLP is dynamically operated 4. Signaling transmission method Configuration of each device 6. 6. Process flow executed by each device Modification 8 Computer configuration

<1. System configuration>

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.

1, the transmission system 1 includes a transmission device 10 and a reception device 20. In this transmission system 1, 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.

In FIG. 1, as the transmission line 30, for example, a terrestrial wave, a satellite line, a cable television network (wired line), or the like can be used.

<2. Overview of this technology>

By the way, in ATSC 3.0, it is decided to use an 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. .

Also, in ATSC 3.0, LLS (Link Layer Signaling) signaling information and SLS (Service Layer Signaling) signaling information are defined, and according to information described in LLS signaling information acquired in advance, for each service. SLS signaling information is acquired.

The LLS signaling information includes metadata such as SLT (Service List Table), EAD (Emergency Alerting Description), RRD (Region Rating Rating), and the like. The SLT includes information indicating the configuration of a stream and a service in the broadcast network, such as information necessary for channel selection. EAD contains information about emergency alerts. The 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.

Here, in ATSC 3.0, it is expected that channel bonding using a plurality of channels (frequency bands) combined will be used, and various operation modes using channel bonding are assumed.

In the field of broadcasting, a frequency hopping method that changes the frequency band to be used every predetermined time may be employed for the purpose of fading countermeasures. For example, in DVB-T2 (Digital Video Broadcasting-Second Generation Terrestrial), a technology called TFS (Time Frequency Slicing) is defined. Here, this frequency hopping method is also expected to be used in ATSC 3.0 channel bonding.

When this frequency hopping method is used, identification information (PHYSICAL_BS_ID and PHYSICAL_PLP_ID, which will be described later) defined on the physical layer side is changed by dynamically switching the PLP to be used at predetermined time intervals. On the upper layer side, it is assumed that such a change in identification information in the physical layer cannot be handled.

Therefore, when channel bonding is performed, when a frequency hopping method is adopted, it is possible to perform more flexible operation by making it possible to cope with changes in identification information of the physical layer in a higher layer. There was a request to do so.

In this technology, PRT (PLP Resolving Table) is defined as a descriptor to respond to such requests, and a method that allows more flexible operation when channel bonding is performed. suggest.

In the following description, it is said that PLP is dynamic when a PLP (Physical Layer Layer Pipe) to be used is changed every predetermined time by using a frequency hopping method in channel bonding. On the other hand, fixing the PLP to be used without using the frequency hopping method is said to be static.

In the following description, information related to the physical layer defined on the physical layer side is referred to as `` Physical '', while information related to the physical layer defined on the higher layer side than the physical layer is referred to as logical (Logical ) To distinguish.

(PRT syntax)
FIG. 2 is a diagram illustrating an example of PRT syntax. The PRT is transmitted as LLS signaling information.

In FIG. 2, 8-bit NUM_LOGICAL_PLP indicates the number of logical PLPs. Next to NUM_LOGICAL_PLP, a logical PLP loop is repeated according to the number of logical PLPs indicated by NUM_LOGICAL_PLP.

LOGICAL_BS_ID, LOGICAL_PLP_ID, PHYSICAL_BS_ID, PHYSICAL_PLP_ID, and dynamic are arranged in this logical PLP loop.

The 16-bit LOGICAL_BS_ID is an identifier corresponding to a unique identifier assigned to one frequency band among the frequency bands subject to channel bonding. For example, for LOGICAL_BS_ID, an identifier assigned to the smallest frequency band among the frequency bands targeted for channel bonding can be adopted. In this case, the first BS_ID in the NUM_RF loop of the physical layer corresponds to this.

The 8-bit LOGICAL_PLP_ID is a unique identifier assigned to each PLP subject to channel bonding.

16-bit PHYSICAL_BS_ID is an identifier unique to the frequency band (RF channel) of the physical layer issued by a predetermined standardization organization or an organization equivalent thereto. For example, in the United States, this corresponds to RF_ID issued by the Federal Communications Commission (FCC).

The 6-bit PHYSICAL_PLP_ID is an identifier unique to the PLP of the physical layer assigned to each PLP in each frequency band (RF channel (BS: Broadcast Stream)) of the physical layer.

∙ 1-bit dynamic is a flag indicating whether or not the target PLP is dynamically operated. For example, when dynamic = "1" is set, it indicates that the target PLP is dynamically operated. Further, when dynamic = "1" is set, N_PHISICAL_BS_ID, N_PHSICAL_PLP_ID, and PLP_SWITCH_TIMING are arranged.

The 16-bit N_PHISICAL_BS_ID is the PHISICAL_BS_ID of the target PLP at the next time indicated by PLP_SWITCH_TIMING. The 6-bit N_PHSICAL_PLP_ID is the PHSICAL_PLP_ID of the target PLP at the next time indicated by PLP_SWITCH_TIMING.

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. As this time information, for example, PTP (Precision Time Protocol) defined in IEEE (Institute of Electrical and Electronic Engineers) 1588 can be used. However, PTP is an example of time information, and other time information such as NTP (Network Time Protocol) may be used.

<3. Operation example>

(1) Operation example 1

(System pipe model)
FIG. 3 is a diagram showing a system pipe model of operation example 1 corresponding to an operation mode when PLP is operated statically.

In the following description, for convenience of explanation, the frequency band of PHYSICAL_RF_ID that is “0x1234” is described as RF channel # 0, and the frequency band of PHYSICAL_BS_ID that is “0x9abc” is described as RF channel # 1. Shall. When PLP # ij is described, “i” represents RF channel #i, and “j” represents PHYSICAL_PLP_ID.

In FIG. 3, among broadcast waves (RF channels) having a predetermined frequency band (for example, 6 MHz), RF channel # 0 of PHYSICAL_BS_ID that is “0x1234” and RF channel # 1 of PHYSICAL_BS_ID that is “0x9abc” Combined and channel bonding is done.

Of the RF channels coupled for channel bonding, RF channel # 0 transmits PLP_00 with PLP_ID being “0” and PLP # 01 with PLP_ID being “1”. Among these PLPs, PLP # 00 transmits NTP (Network Time Protocol), service channel (service), and ESG (Electronic Service Guide) service streams.

In PLP # 00, 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.

In PLP # 01, a service channel and a stream of LLS signaling information (for example, SLT) are transmitted. This service channel stream includes a robust audio stream having high robustness.

On the other hand, among RF channels coupled for channel bonding, in RF channel # 1, PLP # 10 with PLP_ID being “0”, PLP # 11 with PLP_ID being “1”, and “2” PLP # 12 having a PLP_ID of “3” and PLP # 13 having a PLP_ID of “3” are transmitted.

Among these PLPs, in PLP # 10, a service channel and a stream of LLS signaling information (for example, SLT) are transmitted. This service channel stream includes a video (component) stream.

In PLP # 11, SLS signaling information and video (component) streams are transmitted in the service channel. In PLP # 12, a stream of subtitles (components thereof) is transmitted in the service channel. In PLP # 13, a stream of emergency voice (component) is transmitted on the service channel.

Here, in RF channel # 0 and RF channel # 1 combined by channel bonding, different service channel streams are transmitted in PLP # 00, PLP # 10, and PLP # 13, 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 # 10, the receiving device 20 can acquire the SLT therefrom and hold it as channel selection information.

Further, when the service channel is selected, the receiving device 20 can acquire the SLS signaling information transmitted by PLP # 00 based on the channel selection information (SLT). In addition to the PLP # 00 component stream, the SLS signaling information includes information for connecting to the PLP # 10 and PLP # 13 component streams.

Thereby, in the receiving device 20, for example, it is possible to reproduce content of ultra-high definition video (for example, 4K resolution or 8K resolution) composed of components included in different service channels, or to reproduce emergency sound. .

Thus, PLP # 00, PLP # 10, and PLP # 13 belong to the same PLP group 1, but the LLS signaling information stream is transmitted by PLP # 10, and the SLS signaling information stream Is transmitted by PLP # 00, and a component stream is transmitted by each PLP. That is, the PLP group 1 groups signaling information and component streams related to a specific service across RF channels (frequency bands).

On the other hand, in RF channel # 0 and RF channel # 1 combined by channel bonding, different service channel streams are transmitted in PLP # 01, PLP # 11, PLP # 12, and PLP # 13, respectively. But belong to the same PLP group 2. That is, in the PLP group 2, 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.

Further, when the service channel is selected, the receiving device 20 can acquire the SLS signaling information transmitted by PLP # 11 based on the channel selection information (SLT). In addition to the PLP # 11 component stream, the SLS signaling information includes information for connecting to the PLP # 01, PLP # 12, and PLP # 13 component streams.

As a result, for example, the reception device 20 reproduces content of ultra-high definition video (for example, 4K resolution or 8K resolution) composed of components included in different service channels, or reproduces robust audio or emergency audio. be able to.

Thus, PLP # 01, PLP # 11, PLP # 12, and PLP # 13 belong to the same PLP group 2, but the streams of LLS signaling information and SLS signaling information are PLP # 01. And PLP # 11, and the component stream is transmitted by each PLP. That is, the PLP group 2 groups signaling information and component streams related to a specific service across RF channels (frequency bands).

Note that the PLP group can be set, for example, by specifying the BS_ID and the PLP_ID for each ROUTE session by SLS signaling information (metadata thereof). Further, for example, a PLP (shared PLP) shared by the PLP group 1 and the PLP group 2 can be set like PLP # 13.

In the operation example 1, since the PLP is operated statically, the PLP used by each PLP group is fixed as shown in FIG. That is, in RF channel # 0 and RF channel # 1 combined by channel bonding, PLP # 00 and PLP # 10 are always used in PLP group 1, and PLP # 01, PLP # 11, and PLP # 12 are always It is used in PLP group 2, and PLP # 13 is used in PLP group 1 and PLP group 2 as a shared PLP.

(Example of PRT description)
For the system pipe model (FIG. 3) of Operation Example 1 configured as described above, the correspondence between the physical ID (physical BS_ID, physical PLP_ID) and the logical ID (logical BS_ID, logical PLP_ID) is expressed by PRT. As shown in FIG.

However, since the operation example 1 represents an operation mode when the PLP is operated statically, in the PRT of FIG. 5, “0” is set as dynamic for all the PLPs, N_PHISICAL_BS_ID, N_PHSICAL_PLP_ID, and PLP_SWITCH_TIMING are not set.

In FIG. 5, the physical ID consisting of PHYSICAL_BS_ID “0x1234” and the physical ID consisting of PHYSICAL_PLP_ID “0x00” is associated with the logical ID consisting of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x00”. . That is, the logical ID composed of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x00” corresponds to the physical ID of PLP # 00.

The physical ID consisting of PHYSICAL_BS_ID being “0x1234” and the physical ID consisting of PHYSICAL_PLP_ID being “0x01” is associated with the logical ID consisting of LOGICAL_BS_ID being “0x1234” and LOGICAL_PLP_ID being “0x01”. That is, the logical ID composed of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x01” corresponds to the physical ID of PLP # 01.

The physical ID consisting of PHYSICAL_BS_ID being “0x9abc” and the physical ID consisting of PHYSICAL_PLP_ID being “0x00” is associated with the logical ID consisting of LOGICAL_BS_ID being “0x1234” and LOGICAL_PLP_ID being “0x02”. That is, the logical ID composed of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x02” corresponds to the physical ID of PLP # 10.

The physical ID consisting of PHYSICAL_BS_ID “0x9abc” and PHYSICAL_PLP_ID “0x01” is associated with the logical ID consisting of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x03”. That is, the logical ID composed of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x03” corresponds to the physical ID of PLP # 11.

The physical ID consisting of PHYSICAL_BS_ID “0x9abc” and PHYSICAL_PLP_ID “0x02” is associated with the logical ID consisting of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x04”. That is, the logical ID composed of LOGICAL_BS_ID which is “0x1234” and LOGICAL_PLP_ID which is “0x04” corresponds to the physical ID of PLP # 12.

The physical ID consisting of PHYSICAL_BS_ID which is “0x9abc” and the physical ID consisting of PHYSICAL_PLP_ID which is “0x03” is associated with the logical ID consisting of LOGICAL_BS_ID which is “0x1234” and LOGICAL_PLP_ID which is “0x05”. That is, the logical ID composed of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x05” corresponds to the physical ID of PLP # 13.

As described above, in the operation example 1, since the PLP is operated statically, the PLP used is fixed, and thus the physical ID of the target PLP does not change.

(2) Operation example 2

(System pipe model)
FIG. 6 is a diagram illustrating a system pipe model of operation example 2 corresponding to an operation mode when PLP is dynamically operated.

In FIG. 6, among broadcast waves (RF channels) having a predetermined frequency band (for example, 6 MHz), RF channel # 0 of PHYSICAL_RF_ID which is “0x1234” and RF channel # 1 of PHYSICAL_RF_ID which is “0x9abc” are included. Combined and channel bonding is done.

Of the RF channels coupled for channel bonding, RF channel # 0 transmits PLP_00 with PLP_ID being “0” and PLP # 01 with PLP_ID being “1”. Among the RF channels, in RF channel # 1, PLP # 10 with PLP_ID being “0”, PLP # 11 with PLP_ID being “1”, PLP # 12 with PLP_ID being “2”, PLP # 13 of PLP_ID “3” is transmitted.

Also, in RF channel # 0 and RF channel # 1 coupled by channel bonding, PLP # 00, PLP # 10, and PLP # 13 belong to PLP group 1, and PLP # 01, PLP # 11, and PLP # 12 PLP # 13 belongs to PLP group 2.

Here, in the operation example 2, the PLP is dynamically operated. However, as shown in FIG. 7, if attention is paid to the PLP group 1 to which the PLP # 00, PLP # 10, and PLP # 13 belong. PLP group 1 uses PLP # 00 of RF channel # 0 and PLP # 13 of RF channel # 1 from time t0 to time t1. Also, PLP group 1 uses PLP # 10 and PLP # 13 of RF channel # 1 from time t1 to time t3, and PLP # 00 and RF channel # 0 of RF channel # 0 from time t3 to time t4. 1 PLP # 13 is used.

As described above, in the operation example 2, since the PLP is dynamically operated, the PLP used by the PLP group 1 is changed to the PLP # 00 of the RF channel # 0 and the RF channel # 1 every predetermined time. It is switched alternately with PLP # 10. However, in this example, PLP # 13 which is a shared PLP is always used. 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.

On the other hand, as shown in FIG. 7, if attention is paid to PLP group 2 to which PLP # 01, PLP # 11, PLP # 12, and PLP # 13 belong, PLP group 2 , Using PLP # 11, PLP # 12, and PLP # 13 of RF channel # 1, and from time t2 to time t4, PLP # 01 of RF channel # 0, PLP # 12 of RF channel # 1, and , PLP # 13 is used.

As described above, in the operation example 2, since the PLP is dynamically operated, the PLP used by the PLP group 2 is changed to the PLP # 11 of the RF channel # 1 and the RF channel # 0 at every predetermined time. It is switched alternately with PLP # 01. However, in this example, the PLP # 12 of the RF channel # 1 and the PLP # 13 that is a shared PLP are always used. 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.

(Example of PRT description)
Regarding the system pipe model (FIG. 6) of the operation example 2 configured as described above, the correspondence between the physical ID (physical BS_ID, physical PLP_ID) and the logical ID (logical BS_ID, logical PLP_ID) is expressed by PRT. As shown in FIG.

However, the PRT is acquired at predetermined time intervals such as time t0 to time t1, time t1 to time t2, time t2 to time t3, and FIG. 8 is a time t0 to time in FIG. A description example of PRT at time tx during t1 is illustrated.

In addition, since the operation example 2 represents an operation mode when the PLP is dynamically operated, “1” is set as dynamic for the PLP that dynamically switches in the PRT of FIG. 8. N_PHISICAL_BS_ID, N_PHSICAL_PLP_ID, and PLP_SWITCH_TIMING are set.

In FIG. 8, the physical ID consisting of PHYSICAL_BS_ID “0x1234” and the physical ID consisting of PHYSICAL_PLP_ID “0x00” is associated with the logical ID consisting of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x00”. . That is, the logical ID composed of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x00” corresponds to the physical ID of PLP # 00.

Further, since this PLP # 00 is a dynamic PLP, “1” is set as dynamic, and N_PHSICAL_BS_ID that is “0x9abc”, N_PHSICAL_PLP_ID that is “0x00”, and PLP_SWITCH_TIMING that is t1 are set. . That is, it represents that the target PLP is switched from PLP # 00 to PLP # 10 at the next time t1.

In FIG. 8, a physical ID consisting of PHYSICAL_BS_ID “0x9abc” and PHYSICAL_PLP_ID “0x01” is associated with a logical ID consisting of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x01”. That is, the logical ID composed of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x01” corresponds to the physical ID of PLP # 11.

Since PLP # 11 is a dynamic PLP, “1” is set as dynamic, N_PHSICAL_BS_ID which is “0x1234”, N_PHSICAL_PLP_ID which is “0x01”, and PLP_SWITCH_TIMING which is t2 are set. . That is, it represents that the target PLP is switched from PLP # 11 to PLP # 01 at the next time t2.

In FIG. 8, the physical ID consisting of PHYSICAL_BS_ID “0x9abc” and PHYSICAL_PLP_ID “0x02” is associated with the logical ID consisting of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x02”. That is, the logical ID composed of LOGICAL_BS_ID which is “0x1234” and LOGICAL_PLP_ID which is “0x02” corresponds to the physical ID of PLP # 12.

Also, a physical ID consisting of PHYSICAL_BS_ID “0x9abc” and PHYSICAL_PLP_ID “0x03” is associated with a logical ID consisting of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x03”. That is, the logical ID composed of LOGICAL_BS_ID “0x1234” and LOGICAL_PLP_ID “0x03” corresponds to the physical ID of PLP # 13.

Since PLP # 12 and PLP # 13 are static PLPs, “0” is set as dynamic, and N_PHSICAL_BS_ID, N_PHSICAL_PLP_ID, and PLP_SWITCH_TIMING are not set.

As described above, in the operation example 2, since the PLP is dynamically operated, the PLP to be used is dynamically switched every predetermined time, but the PRT in FIG. 8 is transmitted as the LLS signaling information. By doing so, even if the identification information (PHYSICAL_BS_ID, PHYSICAL_PLP_ID) defined on the physical layer side changes, the receiving device 20 can acquire the changed identification information (N_PHYSICAL_BS_ID, N_PHYSICAL_PLP_ID) by PRT. In response to such a change in identification information in the physical layer, more flexible operation can be performed.

Specifically, since the logical ID (LOGICAL_BS_ID, LOGICAL_PLP_ID), the physical ID before change (PHYSICAL_BS_ID, PHYSICAL_PLP_ID), and the physical ID after change (N_PHYSICAL_BS_ID, N_PHYSICAL_PLP_ID) are associated by PRT, the receiving device 20 Even when the PLP used at every predetermined time is dynamically switched and the physical ID changes, the logical ID can be converted to the changed physical ID using the PRT. Thereby, the receiving apparatus 20 can specify the PLP after switching and acquire LLS signaling information, SLS signaling information, components, and the like.

<4. Signaling Transmission Method>

(Layer structure)
FIG. 9 is a diagram for explaining the concept of the layer structure corresponding to ATSC 3.0.

In FIG. 9, an IP packet (IP packet) is transmitted in layer 3 (L3). The IP packet includes an IP header (IP (Header), a UDP header (UDP Header), and data (Data). That is, the IP packet is an IP / UDP packet including a UDP packet. In the data of the IP packet (IP / UDP packet), a ROUTE packet, NTP, etc. are arranged. This ROUTE packet stores SLS signaling information and component data.

In Layer 2 (L2), a generic packet (Generic packet) as a transmission packet is transmitted. The Generic packet is composed of a Generic header (Generic Header) and a payload (Payload). In the payload of the generic packet, one or a plurality of IP packets are arranged and encapsulated.

Here, as a transmission method of LLS signaling information such as SLT and PRT, a first method transmitted as L2 signaling information and a second method transmitted using IP / UDP packets can be adopted.

That is, when the first scheme is adopted, the LLS signaling information is arranged as L2 signaling information in the payload of the generic packet as indicated by A1 in the figure. On the other hand, when the second method is adopted, the LLS signaling information is arranged as data of the IP / UDP packet as indicated by A2 in the figure.

The BB frame (Baseband Frame) of layer 1 (L1) corresponding to the physical layer is composed of a BB frame header (Baseband Frame Header) and a payload (Payload). A plurality of generic packets are arranged and encapsulated in the payload of the BB frame. In layer 1, data (Data) obtained by scrambling a plurality of BB frames is mapped to an FEC frame (FECFEFrame), and a physical layer error correction parity (Parity) is added.

The physical layer frame (ATSC 物理 (Physical) Frame) of layer 1 (L1) is composed of a bootstrap, a preamble, and a data part (Data). In the data part of the physical layer frame, after performing bit interleaving on a plurality of FEC frames, mapping processing is performed, and further, physical layer processing such as interleaving in the time direction and the frequency direction is performed. The data obtained by the mapping is mapped.

<5. Configuration of each device>

Next, detailed configurations of the transmission device 10 and the reception device 20 that constitute the transmission system 1 of FIG. 1 will be described.

(Configuration of transmitter)
FIG. 10 is a diagram illustrating a configuration example of the transmission device 10 of FIG.

10, 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.

Note that, as the content, for example, 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.

Here, in addition to LLS signaling information (such as SLT and PRT) and SLS signaling information, L1 signaling information and the like are generated as signaling information. Among such signaling information, LLS signaling information and SLS signaling information are supplied to the packet generation unit 106, and L1 signaling information is supplied to the physical layer frame generation unit 107.

The packet generation unit 106 generates ROUTE packets and IP packets (IP / UDP packets) using video (audio) (components) data supplied from the encoder 103 and signaling information supplied from the signaling processing unit 105. To do. 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.

Specifically, when the first method is adopted, a ROUTE packet storing SLS signaling information and component data is arranged in the IP / UDP packet data. In the generic packet payload, an IP / UDP packet storing the ROUTE packet and LLS signaling information as L2 signaling information are arranged.

On the other hand, when the second method is adopted, the LLS signaling information is arranged in the IP / UDP packet data in addition to the ROUTE packet storing the SLS signaling information and the component data. In the generic packet payload, an IP / UDP packet storing the ROUTE packet and LLS signaling information is arranged.

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. However, in the physical layer frame, L1 signaling information supplied from the signaling processing unit 105 is arranged in the preamble.

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.

However, 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.

In FIG. 10, the signaling generation unit 104 has been described as generating signaling information. However, the packet generation unit 106 or the physical layer frame generation unit 107 may generate the signaling information. For example, the packet generator 106 can generate LLS signaling information or SLS signaling information and store it in the packet. Also, for example, the physical layer frame generation unit 107 can generate L1 signaling information and place it in the physical layer frame.

Further, in the transmission device 10 of FIG. 10, it is not necessary that all functional blocks are physically arranged 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.

(Receiver configuration)
FIG. 11 is a diagram illustrating a configuration example of the receiving device 20 of FIG.

11, 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 arranged in the preamble of the physical layer frame and supplies the L1 signaling information 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. Further, the packet processing unit 204 performs processing on an IP packet (IP / UDP packet) and a ROUTE 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.

Specifically, when the first method is adopted in the transmission apparatus 10 on the transmission side described above, LLS signaling information as L2 signaling information is extracted from the payload of the generic packet and stored in the IP / UDP packet. SLS signaling information and component data are extracted from the ROUTE packet.

On the other hand, when the second method is adopted in the transmission apparatus 10 on the transmission side described above, the LLS signaling information is extracted from the IP / UDP packet arranged in the payload of the generic packet, and the IP / UDP packet is extracted. SLS signaling information and component data are extracted from the stored ROUTE 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. Here, L1 signaling information, LLS signaling information, SLS signaling information, and the like are processed as signaling information.

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 signaling information and the like.

Further, for example, when a service channel (service) is selected, the 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.

In FIG. 11, it has been described that the signaling information is processed by the signaling processing unit 205. However, the physical layer frame processing unit 203 or the packet processing unit 204 may process the signaling information. For example, the physical layer frame processing unit 203 can process L1 signaling information. For example, the packet processing unit 204 can process LLS signaling information or SLS signaling information.

In FIG. 11, a configuration in which the display unit 207 and the speaker 208 are built in as a case where the reception device 20 is a fixed receiver such as a television receiver or a mobile receiver such as a smartphone or a tablet terminal. However, for example, in the case of a recorder, a set top box (STB), a display unit 207 and a speaker 208 are provided outside.

<6. Flow of processing executed by each device>

Next, with reference to the flowcharts of FIGS. 12 to 13, the flow of processing executed by each device constituting the transmission system 1 of FIG. 1 will be described.

(Transmission process)
First, the flow of transmission processing executed by the transmission device 10 of FIG. 1 will be described with reference to the flowchart of FIG.

In 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.

In step S102, the signaling generation unit 104 generates signaling information. Here, L1 signaling information, LLS signaling information, SLS signaling information, and the like are generated.

In step S103, packet / frame generation processing is performed.

In this packet / frame generation process, the packet generation unit 106 generates a ROUTE packet, an IP packet (IP / UDP packet), and a generic packet. Further, the physical layer frame generation unit 107 generates a physical layer frame.

Here, SLS signaling information and component data are arranged in a ROUTE packet stored in an IP / UDP packet in common with the first method and the second method. When the first method is adopted, LLS signaling information is arranged in the payload of the generic packet. On the other hand, when the second method is adopted, LLS signaling information is arranged in the data of the IP / UDP packet. Further, L1 signaling information is arranged in the preamble of the physical layer frame.

In step S104, the transmission unit 108 performs processing on the physical layer frame and transmits the digital layer signal via the antenna 111. However, here, a digital broadcast signal is transmitted using a plurality of frequency bands coupled by channel bonding. Further, when the PLP is dynamically operated, the PLP to be used is changed every predetermined time.

The flow of transmission processing has been described above.

(Reception processing)
Next, the flow of reception processing executed by the reception device 20 of FIG. 1 will be described with reference to the flowchart of FIG. This reception process is a process executed when a specific service channel (service) is selected.

In step S201, the reception unit 202 receives a digital broadcast signal transmitted from the transmission device 10 using channel bonding via the antenna 211. Here, when the PLP is dynamically operated in the transmission device 10, the PLP used for each predetermined frequency is changed.

In step S202, packet / frame processing is performed.

In this packet / frame processing, the physical layer frame processing unit 203 processes the physical layer frame. Further, the packet processing unit 204 performs processing on generic packets, IP packets (IP / UDP packets), and ROUTE packets.

In 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.

Here, for example, as the LLS signaling information, the PRT as the correspondence information in which the physical ID (physical BS_ID, physical PLP_ID) and the logical ID (logical BS_ID, logical PLP_ID) are associated with each other is transmitted, so the signaling processing unit 205 Supplies the PRT processing result to the control unit 201.

When the PLP is dynamically operated and the PLP to be used is dynamically switched at every predetermined time and the physical ID changes, the control unit 201 uses the logical ID ( (Logical BS_ID, logical PLP_ID) can be converted into a physical ID after change (physical BS_ID, physical PLP_ID). Accordingly, the control unit 201 can acquire and process LLS signaling information, SLS signaling information, and the like by specifying the PLP after switching and controlling the operation of each unit.

Here, when the first method is adopted, LLS signaling information is extracted from the payload of the generic packet. On the other hand, when the second method is adopted, LLS signaling information is extracted from the IP / UDP packet.

In 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. As a result, the video of the content is displayed on the display unit 207, and the sound is output from the speaker 208.

The flow of reception processing has been described above.

<7. Modification>

As described above, although the ATSC (for example, ATSC3.0), which is a method adopted in the United States and the like, has been described as a standard for digital broadcasting, this technology is based on ISDB (Integrated Services) which is a method adopted by Japan and the like. (Digital よい Broadcasting) and DVB (Digital Video Broadcasting) which is a method adopted by European countries.

Further, 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. For example, the SLT may be referred to as FIT (Fast Information Table). Moreover, the case where another name is used also about PRT is assumed.

<8. Computer configuration>

The series of processes described above can be executed by hardware or software. When a series of processing is executed by software, a program constituting the software is installed in the computer. FIG. 14 is a diagram illustrating a configuration example of the hardware of a computer that executes the above-described series of processing by a program.

In the computer 900, a CPU (Central Processing Unit) 901, a ROM (Read Only Memory) 902, and a RAM (Random Access Memory) 903 are connected to each other by a bus 904. 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.

In the computer 900 configured as described above, 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 (CPU 901) 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.

In the computer 900, 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.

Here, in the present specification, 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.

Note that the embodiments of the present technology are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present technology.

Also, the present technology can take the following configurations.

(1)
When performing channel bonding using a combination of a plurality of frequency bands, a first defined in the physical layer is used when a PLP (Physical Layer Pipe) to be used is dynamically switched every predetermined time. A generation unit that generates correspondence information in which identification information is associated with second identification information defined in a higher hierarchy than the physical layer;
And a transmission unit configured to transmit a transmission stream including the correspondence information by the channel bonding.
(2)
The correspondence information is
As the first identification information, a first physical ID that is a unique identifier assigned to each frequency band, and a second physical ID that is a unique identifier assigned to each PLP included in the frequency band When,
As the second identification information, a first logical ID corresponding to a unique identifier assigned to one frequency band among the frequency bands targeted for channel bonding, and each PLP targeted for channel bonding The transmission device according to (1), wherein the second logical ID, which is a unique identifier assigned to, is associated.
(3)
The transmission apparatus according to (2), wherein the correspondence information further includes the first physical ID and the second physical ID after the PLP is dynamically switched.
(4)
The transmission device according to (3), wherein the correspondence information further includes time information indicating a time at which the PLP is dynamically switched.
(5)
The transmission stream corresponds to an IP (Internet Protocol) transmission method,
The transmission apparatus according to any one of (1) to (4), wherein the correspondence information is arranged and transmitted in a payload of a transmission packet capable of storing an IP packet.
(6)
The transmission stream corresponds to the IP transmission method,
The transmission device according to any one of (1) to (4), wherein the correspondence information is arranged and transmitted in a UDP (User Datagram Protocol) packet included in the IP packet.
(7)
The transmission apparatus according to any one of (1) to (6), wherein the transmission stream corresponds to an ATSC (Advanced Television Systems Committee) 3.0 standard.
(8)
In the transmission method of the transmission device,
The transmitting device is
In the case of performing channel bonding using a plurality of frequency bands combined, first identification information defined in the physical layer, which is used when a PLP to be used is dynamically switched every predetermined time, and Generating correspondence information in association with second identification information defined in a layer higher than the physical layer;
A transmission method including a step of transmitting a transmission stream including the correspondence information by the channel bonding.
(9)
In the case of performing channel bonding using a plurality of frequency bands combined, first identification information defined in the physical layer, which is used when a PLP to be used is dynamically switched every predetermined time, and A receiving unit that receives a transmission stream including correspondence information associated with second identification information defined in a layer higher than the physical layer;
And a control unit that controls the operation of each unit that processes the transmission stream based on the first identification information corresponding to the second identification information specified by the correspondence information.
(10)
The correspondence information is
As the first identification information, a first physical ID that is a unique identifier assigned to each frequency band, and a second physical ID that is a unique identifier assigned to each PLP included in the frequency band When,
As the second identification information, a first logical ID corresponding to a unique identifier assigned to one frequency band among the frequency bands targeted for channel bonding, and each PLP targeted for channel bonding The receiving device according to (9), wherein the second logical ID, which is a unique identifier assigned to, is associated.
(11)
The receiving apparatus according to (10), wherein the correspondence information further includes the first physical ID and the second physical ID after the PLP is dynamically switched.
(12)
The reception device according to (11), wherein the correspondence information further includes time information indicating a time at which the PLP is dynamically switched.
(13)
The transmission stream corresponds to the IP transmission method,
The reception device according to any one of (9) to (12), wherein the correspondence information is arranged and transmitted in a payload of a transmission packet capable of storing an IP packet.
(14)
The transmission stream corresponds to the IP transmission method,
The receiving device according to any one of (9) to (12), wherein the correspondence information is arranged and transmitted in a UDP packet included in an IP packet.
(15)
The receiving device according to any one of (9) to (14), wherein the transmission stream corresponds to a standard of ATSC3.0.
(16)
In the receiving method of the receiving device,
The receiving device is
In the case of performing channel bonding using a plurality of frequency bands combined, first identification information defined in the physical layer, which is used when a PLP to be used is dynamically switched every predetermined time, and Receiving a transmission stream including correspondence information associated with second identification information defined in a layer higher than the physical layer;
A receiving method including a step of controlling an operation of each unit that processes the transmission stream based on the first identification information corresponding to the second identification information specified by the correspondence information.

1 transmission system, 10 transmission device, 20 reception device, 30 transmission path, 101 control unit, 102 component acquisition unit, 104 signaling generation unit, 105 signaling processing unit, 106 packet generation unit, 107 physical layer frame generation unit, 108 transmission unit , 201 control unit, 202 reception unit, 203 physical layer frame processing unit, 204 packet processing unit, 205 signaling processing unit, 900 computer, 901 CPU

Claims

When performing channel bonding using a combination of a plurality of frequency bands, a first defined in the physical layer is used when a PLP (Physical Layer Pipe) to be used is dynamically switched every predetermined time. A generation unit that generates correspondence information in which identification information is associated with second identification information defined in a higher hierarchy than the physical layer;
And a transmission unit configured to transmit a transmission stream including the correspondence information by the channel bonding.
The correspondence information is
As the first identification information, a first physical ID that is a unique identifier assigned to each frequency band, and a second physical ID that is a unique identifier assigned to each PLP included in the frequency band When,
As the second identification information, a first logical ID corresponding to a unique identifier assigned to one frequency band among the frequency bands targeted for channel bonding, and each PLP targeted for channel bonding The transmission apparatus according to claim 1, wherein the second logical ID, which is a unique identifier assigned to, is associated.
The transmission device according to claim 2, wherein the correspondence information further includes the first physical ID and the second physical ID after the PLP is dynamically switched.
The transmission device according to claim 3, wherein the correspondence information further includes time information indicating a time at which the PLP is dynamically switched.
The transmission stream corresponds to an IP (Internet Protocol) transmission method,
The transmission device according to claim 1, wherein the correspondence information is arranged and transmitted in a payload of a transmission packet that can store an IP packet.
The transmission stream corresponds to the IP transmission method,
The transmission apparatus according to claim 1, wherein the correspondence information is arranged and transmitted in a UDP (User Datagram Protocol) packet included in the IP packet.
The transmission apparatus according to claim 1, wherein the transmission stream corresponds to a standard of ATSC (Advanced Television Systems Committee) 3.0.
In the transmission method of the transmission device,
The transmitting device is
In the case of performing channel bonding using a plurality of frequency bands combined, first identification information defined in the physical layer, which is used when a PLP to be used is dynamically switched every predetermined time, and Generating correspondence information in association with second identification information defined in a layer higher than the physical layer;
A transmission method including a step of transmitting a transmission stream including the correspondence information by the channel bonding.
In the case of performing channel bonding using a plurality of frequency bands combined, first identification information defined in the physical layer, which is used when a PLP to be used is dynamically switched every predetermined time, and A receiving unit that receives a transmission stream including correspondence information associated with second identification information defined in a layer higher than the physical layer;
And a control unit that controls the operation of each unit that processes the transmission stream based on the first identification information corresponding to the second identification information specified by the correspondence information.
The correspondence information is
As the first identification information, a first physical ID that is a unique identifier assigned to each frequency band, and a second physical ID that is a unique identifier assigned to each PLP included in the frequency band When,
As the second identification information, a first logical ID corresponding to a unique identifier assigned to one frequency band among the frequency bands targeted for channel bonding, and each PLP targeted for channel bonding The receiving apparatus according to claim 9, wherein the second logical ID, which is a unique identifier assigned to, is associated.
The receiving device according to claim 10, wherein the correspondence information further includes the first physical ID and the second physical ID after the PLP is dynamically switched.
The receiving device according to claim 11, wherein the correspondence information further includes time information indicating a time at which the PLP is dynamically switched.
The transmission stream corresponds to the IP transmission method,
The receiving device according to claim 9, wherein the correspondence information is arranged and transmitted in a payload of a transmission packet capable of storing an IP packet.
The transmission stream corresponds to the IP transmission method,
The receiving device according to claim 9, wherein the correspondence information is arranged and transmitted in a UDP packet included in an IP packet.
The receiving apparatus according to claim 9, wherein the transmission stream corresponds to the ATSC 3.0 standard.
In the receiving method of the receiving device,
The receiving device is
In the case of performing channel bonding using a plurality of frequency bands combined, first identification information defined in the physical layer, which is used when a PLP to be used is dynamically switched every predetermined time, and Receiving a transmission stream including correspondence information associated with second identification information defined in a layer higher than the physical layer;
A receiving method including a step of controlling an operation of each unit that processes the transmission stream based on the first identification information corresponding to the second identification information specified by the correspondence information.