WO2016166947A1

WO2016166947A1 - Transmission device and method, reception device and method

Info

Publication number: WO2016166947A1
Application number: PCT/JP2016/001880
Authority: WO
Inventors: Kazuyuki Takahashi; Yasuaki Yamagishi
Original assignee: Sony Corporation
Priority date: 2015-04-17
Filing date: 2016-04-01
Publication date: 2016-10-20
Also published as: JP2016208161A

Abstract

There is provided a transmission device, including circuitry configured to generate transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols. The circuitry is further configured to transmit the transmission information in first control information.

Description

[Title established by the ISA under Rule 37.2] TRANSMISSION DEVICE AND METHOD, RECEPTION DEVICE AND METHOD

The present technology relates to a transmission device, a transmission method, a reception device, and a reception method, and more particularly to a transmission device, a transmission method, a reception device, and a reception method, which are capable of allowing a plurality of transport protocols to coexist.

<CROSS REFERENCE TO RELATED APPLICATIONS>
This application claims the benefit of Japanese Priority Patent Application JP 2015-085358 filed April 17, 2015, the entire contents of which are incorporated herein by reference.

For example, in Advanced Television Systems Committee (ATSC) 3.0 that is one of next generation terrestrial broadcasting standards, an Internet Protocol (IP)/User Datagram Protocol (UDP) packet, that is, an IP packet including a UDP packet rather than a Transport Stream (TS) packet, has been decided to be used for data transmission. An IP packet is expected to be used even in digital broadcasting other than the ATSC3.0 in the future (for example, see NPL 1).

"ARIB STD-B60 1.1 edition," Association of Radio Industries and Businesses

Meanwhile, in digital broadcasting standards such as the ATSC 3.0, since there are cases in which a plurality of transport protocols coexist, there is a demand for a technique of allowing a plurality of transport protocols to coexist.

The present technology was made in light of the foregoing, and it is desirable to allow a plurality of transport protocols to coexist.

According to a first embodiment of the present technology, there is provided a transmission device, including circuitry configured to generate transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols. The circuitry is further configured to transmit the transmission information in first control information.

The transmission device according to a first embodiment of the present technology may be an independent device or an internal block configuring one device. A transmission method according to the first embodiment of the present technology is a transmission method corresponding to the transmission device according to the first embodiment of the present technology. For example, a method of a transmission device for transmitting transmission information includes generating, by circuitry of the transmission device, transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols. The method further includes transmitting, by the circuitry of the transmission device, the transmission information in first control information.

In a transmission device and a transmission method according to the first embodiment of the present technology, transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols is generated. The transmission information is included in first control information and is transmitted.

According to a second embodiment of the present technology, there is provided a reception device, including circuitry configured to receive transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols. The transmission information is included in first control information. The circuitry is further configured to control processing of the stream of the service transmitted using the specific transport protocol based on second control information corresponding to the specific transport protocol. The second control information is acquired based on the transmission information.

The reception device according to the second embodiment of the present technology may be an independent device or an internal block configuring one device. A reception method according to the second embodiment of the present technology is a reception method corresponding to the reception device according to the second embodiment of the present technology. For example, a method of a reception device for processing a stream of service includes receiving, by circuitry of the reception device, transmission information indicating whether or not the stream of the service is transmitted using a specific transport protocol among a plurality of transport protocols. The transmission information is included in first control information. The method further includes controlling, by the circuitry of the reception device, the processing of the stream of the service transmitted using the specific transport protocol based on second control information corresponding to the specific transport protocol. The second control information is acquired based on the transmission information.

In a reception device and a reception method according to the second embodiment of the present technology, transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols is received. The transmission information is included in first control information. Processing of the stream of the service transmitted using the specific transport protocol is controlled based on second control information corresponding to the specific transport protocol. The second control information is acquired based on the transmission information.

According to the first and second embodiments of the present technology, it is possible to allow a plurality of transport protocols to coexist.

The effect described herein is not necessarily limited and may include any effect described in the present disclosure.

FIG. 1 is a diagram illustrating a configuration of an embodiment of a transmission system to which an embodiment of the present technology is applied. FIG. 2 is a diagram for describing a scheme for supporting a plurality of transport protocols. FIG. 3 is a diagram illustrating an example of a syntax of a descriptor of an embodiment of the present technology. FIG. 4 is a diagram illustrating a system pipe model of an operation example 1-1. FIG. 5 is a diagram illustrating a description example of a descriptor of an embodiment of the present technology of an operation example 1-1. FIG. 6 is a diagram illustrating a system pipe model of an operation example 1-2. FIG. 7 is a diagram illustrating a description example of a descriptor of an embodiment of the present technology of an operation example 1-2. FIG. 8 is a diagram illustrating a system pipe model of an operation example 2-1. FIG. 9 is a diagram illustrating a description example of a descriptor of an embodiment of the present technology of an operation example 2-1. FIG. 10 is a diagram illustrating a system pipe model of an operation example 2-2. FIG. 11 is a diagram illustrating a description example of a descriptor of an embodiment of the present technology of an operation example 2-2. FIG. 12 is a diagram for describing a concept of a layer structure corresponding to ATSC 3.0. FIG. 13 is a diagram illustrating an example of a syntax of L1-post signaling. FIG. 14 is a diagram illustrating a structure of bootstrap. FIG. 15 is a diagram illustrating an example of a syntax of a bootstrap symbol 1. FIG. 16 is a diagram illustrating an example of a syntax of a bootstrap symbol 2. FIG. 17 is a diagram illustrating an example of a syntax of a bootstrap symbol 3. FIG. 18 is a diagram illustrating a structure of bootstrap. FIG. 19 is a diagram illustrating an example of a syntax of a bootstrap symbol 4. FIG. 20 is a diagram illustrating an example of a syntax of a bootstrap symbol 5. FIG. 21 is a diagram illustrating an example of a syntax of a bootstrap symbol 67. FIG. 22 is a diagram illustrating a configuration example of a transmission device. FIG. 23 is a diagram illustrating a configuration example of a reception device. FIG. 24 is a flowchart for describing a transmission process. FIG. 25 is a flowchart for describing a reception process. FIG. 26 is a diagram illustrating a configuration example of a computer.

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

1. Configuration of system
2. Overview of present technology
3. Operation examples
(1) Operation example 1-1: when signaling information of ROUTE and MMT is transmitted through separate PLPs
(2) Operation example 1-2: when signaling information of ROUTE and MMT is transmitted through common PLP
(3) Operation example 2-1: when signaling information of ROUTE and MMT on IP/UDP is transmitted through separate PLPs
(4) Operation example 2-2: when signaling information of ROUTE and MMT on IP/UDP is transmitted through common PLP
4. Transmission method of signaling
5. Configurations of devices
6. Flow of process executed by devices
7. Modified example
8. Configuration of computer

<1. Configuration of system>

FIG. 1 is a diagram illustrating a configuration of an embodiment of a transmission system to which an embodiment of the present technology is applied. A system refers to a logical set of a plurality of devices.

Referring to FIG. 1, a transmission system 1 includes a transmission device 10 and a reception device 20. In the transmission system 1, data transmission complying with the digital broadcasting standard such as the ATSC 3.0 is performed.

The transmission device 10 transmits content such as a television program. In other words, the transmission device 10 transmits streams of (components) of a video, audio, closed captions, and the like configuring content via the transmission path 30 as a digital broadcasting signal.

The reception device 20 receives content such as a television program transmitted from the transmission device 10 via the transmission path 30, and outputs the received content. In other words, the reception device 20 receives the digital broadcasting signal transmitted from the transmission device 10, acquires and processes streams of (components) of a video, audio, closed captions, and the like configuring content, and outputs a video and a sound of the content.

<2. Overview of present technology>

Meanwhile, in the digital broadcasting standard, as illustrated in FIG. 2, there are cases in which transport protocols such as Real-Time Object Delivery over Unidirectional Transport (ROUTE), MPEG Media Transport (MMT), and MPEG2-TS are operated in a coexisting manner.

Here, the ROUTE is a protocol extended from a File Delivery over Unidirectional Transport (FLUTE) that is a protocol suitable for transferring binary files in one direction in a multicast manner. The MMT is a transport scheme used on the IP and can refer to data such as a video or a sound by setting an IP address or a Uniform Resource Locator (URL) through control information. The MPEG2-TS is a transport scheme for transmitting and receiving data of an MPEG2 format and can handle data of a video or sound as one stream.

The transport protocols include a specific data flow and service signaling, and thus when a service is provided, (the transmission device 10 of) the broadcasting station side selects a specific transport protocol from among a plurality of transport protocols such as the ROUTE and the MMT and uses the selected transport protocol. For this reason, it is necessary for the transmission device 10 to transmit information (hereinafter, also referred to as “transmission information”) indicating whether or not a stream of a service using a specific transport protocol among a plurality of transport protocols is being transmitted to the reception device 20.

For example, in the ATSC 3.0, the ROUTE and the MMT coexist as the transport protocol. In this case, it is necessary to notify of whether a stream of a service is a stream of a service using the ROUTE (hereinafter, also referred to as a ROUTE service) or a stream of a service using the MMT (hereinafter, also referred to as an MMT service) through the transmission information.

As described above, when a plurality of transport protocols are operated in the coexisting manner, there is a demand for a technique of appropriately notifying of a transport protocol used by a stream of each service and allowing the plurality of transport protocols to coexist.

In this regard, in an embodiment of the present technology, a scheme in which it is possible to allow a plurality of transport protocols to coexist by defining a descriptor (hereinafter, also referred to as a descriptor of an embodiment of the present technology) including the transmission information for responding to this demand and arranging the descriptor in a physical layer frame is proposed. For example, since the ROUTE and the MMT coexist as the transport protocol in the ATSC 3.0, the description will proceed with an example in which the ROUTE and the MMT coexist.

Further, signaling information used in the ROUTE service is different from signaling information used in the MMT service. Specifically, in the ROUTE service, Link Layer Signaling (LLS) signaling information and Service Layer Signaling (SLS) signaling information are specified, and the SLS signaling information of each ROUTE service is acquired using information described in the LLS signaling information that is acquired previously.

Here, for example, metadata such as a Fast Information Table (FIT), an Emergency Alerting Description (EAD), and a Region Rating Description (RRD) is included as the LLS signaling information. The FIT includes information indicating a configuration of a stream or a service in a broadcasting network such as information necessary for tuning of the ROUTE service. The EAD includes information related to an emergency alert. The RRD includes information related to rating.

For example, metadata such as a User Service Description (USD), a Media Presentation Description (MPD), or an LCT Session Instance Description (LSID) is included as the SLS signaling information. The USD includes information such as an acquisition destination of other metadata. The MPD is information for managing reproduction of a stream of a component. The LSID is control information of the ROUTE protocol.

In the MMT service, signaling information related to the MMT service (hereinafter referred to as MMT signaling information) is specified.

Further, as illustrated in FIG. 2, the present applicant has previously proposed a scheme of arranging transport protocol selection information in a header of a generic packet transmitting an IP packet, an extension header of the generic packet, a header added to L2 signaling information arranged in a payload of the generic packet, the L2 signaling information arranged in the payload of the generic packet, or an extension header of a baseband (BB) frame and transmitting the resulting information.

(Syntax of descriptor of embodiment of the present technology)
FIG. 3 is a diagram illustrating an example of a syntax of the descriptor of an embodiment of the present technology.

NUM_PLP of 6 bits indicates the number of Physical Layer Pipes (PLPs) that can be arranged in one frequency band. For example, it is specified in the ATSC 3.0 that a maximum of 64 PLPs can be arranged in one frequency band (for example, a frequency band of 6 MHz corresponding to one channel), and thus NUM_PLP=“64” or the like can be set. Subsequently to NUM_PLP, a 2-bit reserved field (reserved) is arranged. Subsequently to the reserved field, a PLP loop is repeated according to the number of PLPs indicated by NUM_PLP.

In the PLP loop, ROUTE_SIGNALING_ENTRY and MMT_SIGNALING_ENTRY, PLP_GROUP_ID are arranged as the transmission information.

ROUTE_SIGNALING_ENTRY of 1 bit is a flag indicating whether or not the LLS signaling information used in the ROUTE service is being transmitted in the target PLP. For example, when ROUTE_SIGNALING_ENTRY=“1” is set, the target PLP indicates that the LLS signaling information is included.

MMT _SIGNALING_ENTRY of 1 bit is a flag indicating whether or not the MMT signaling information used in the MMT service is being transmitted in the target PLP. For example, when MMT _SIGNALING_ENTRY=“1” is set, the target PLP indicates that the MMT signaling information is included.

PLP_GROUP_ID of 6 bits is an ID identifying a group to which the target PLP belongs. Here, PLP_GROUP_ID is indicated by a bitmap structure in which a group is allocated to each bit in a 6-bit bit string. Thus, bits from a Least Significant Bit (LSB) to a Most Significant Bit (MSB) among 6 bits can be allocated to a PLP group 1 to a PLP group 6.

FIG. 3 illustrates the example in which the ROUTE and the MMT coexist as the transport protocol, but when another transport protocol such as the MPEG2-TS is further used, a 1-bit flag indicating whether or not the signaling information used in the service of another transport protocol is being transmitted is further added. Further, PLP_GROUP_ID has been described as being 6 bits, but the number of bits allocated to PLP_GROUP_ID is arbitrary. For example, 14 groups can be set by increasing bits allocated to PLP_GROUP_ID by one byte and allocating 14 bits.

<3. Operation examples>

Next, specific operation examples using the descriptor of an embodiment of the present technology will be described. Here, an example in which the LLS signaling information or the MMT signaling information is transmitted as the L2 signaling information as a first scheme and an example in which the LLS signaling information or the MMT signaling information is transmitted through an IP packet including a UPD packet (hereinafter, also referred to as an IP/UDP packet) as a second scheme will be described.

(1) Operation example 1-1

(System pipe model)
FIG. 4 is a diagram illustrating a system pipe model of an operation example 1-1 corresponding to an operation form in which the signaling information of the ROUTE service and the MMT service is transmitted through different PLPs when the first scheme is employed.

In FIG. 4, a PLP (PLP 0) having a PLPID of “0,” a PLP (PLP 1) having a PLPID of “1,” and a PLP (PLP 2) having a PLPID of “2” are transmitted in broadcast waves (an RF Channel) having a predetermined frequency band (for example, 6 MHz). Among the three PLPs, in the PLP 0, a Network Time Protocol (NTP) and a stream of the ROUTE service are transmitted on the IP/UDP.

In the PLP 0, the stream of the ROUTE service includes the SLS signaling information and streams of a video, audio, and closed captions. The SLS signaling information is the signaling information of each the ROUTE service such as the USD or the MPD. Further, content A (for example, a television program) provided by the ROUTE service is configured with components of a video, audio, and closed captions. The NTP is time information.

In FIG. 4, in the PLP 1, the LLS signaling information such as the FIT is transmitted. Further, in the PLP 1, the stream of the ROUTE service is transmitted on the IP/UDP. The stream of the ROUTE service includes a stream of robust audio having high robustness.

Here, the streams of the different ROUTE services are transmitted in the PLP 0 and the PLP 1, but the PLP 0 and the PLP 1 belong to the same PLP group 1. In other words, in the PLP group 1, the stream of the LLS signaling information is transmitted in the PLP 1, and thus the reception device 20 can acquire the FIT from the stream of the LLS signaling information and hold the FIT as tuning information.

When the ROUTE service is selected, the reception device 20 acquires the SLS signaling information transmitted in the PLP 0 based on the tuning information (FIT). Then, the reception device 20 can acquire the streams of the video, the audio, and the closed captions based on the SLS signaling information of the PLP 0 and reproduce the content A of the PLP 0. Here, since the stream of the robust audio is transmitted through the stream of the ROUTE service of the PLP 1, the reception device 20 may cause the robust audio of the PLP 1 to be reproduced instead of normal audio of the PLP 0.

As described above, the PLP 0 and the PLP 1 belong to the same PLP group 1, but the SLS signaling information and the streams of the components are transmitted in the PLP 0, whereas the LLS signaling information and the streams of the robust audio are transmitted in the PLP 1. In other words, the signaling information and the streams of the components related to a specific ROUTE service are grouped into the PLP group 1.

Further, in FIG. 4, the stream of the MMT signaling information is transmitted in the PLP 2. In the PLP 2, the NTP and the stream of the MMT service are transmitted on the IP/UDP. In the PLP 2, the stream of the MMT service includes the streams of the video, the audio, and the closed captions. Content B (for example, a television program) provided by the MMT service is configured with components of a video, audio, and closed captions.

Here, the PLP 2 does not belong to a PLP group and is configured as an independent PLP. In other words, since the stream of the MMT signaling information is transmitted in the PLP 2 belonging to no PLP group, when the MMT service is selected, the reception device 20 acquires the streams of the video, the audio, and the closed captions based on the MMT signaling information of the PLP 2 and reproduces the content B of the PLP 2.

As described above, the PLP 2 does not belong to a PLP group and is configured as an independent PLP, and the MMT signaling information and the streams of the components are transmitted in the PLP 2. In other words, all the signaling information and the streams of the components related to a specific MMT service are transmitted through the PLP 2.

(Description example of descriptor of embodiment of the present technology)
For the system pipe model (FIG. 4) of the operation example 1-1 configured as described above, the presence or absence of transmission of the LLS signaling information and the MMT signaling information and an associated PLP group are indicated by the descriptor of an embodiment of the present technology for each PLP identified by a PLPID as illustrated in FIG. 5.

Referring to FIG. 5, in the PLP (the PLP 0) having the PLPID of “0,” (the streams of) neither the LLS signaling information nor the MMT signaling information is transmitted, and thus “0” is set to both ROUTE_SIGNALING_ENTRY and MMT_SIGNALING_ENTRY.

Meanwhile, in the PLP (the PLP 1) having the PLPID of “1,” the LLS signaling information is transmitted, and thus “1” is set to ROUTE_SIGNALING_ENTRY, and “0” is set to MMT_SIGNALING_ENTRY. Further, in the PLP (the PLP 2) having the PLPID of “2,” the MMT signaling information is transmitted, and thus “0” is set to ROUTE_SIGNALING_ENTRY, and “1” is set to MMT_SIGNALING_ENTRY.

Further, since the PLP (the PLP 0) having the PLPID of “0” and the PLP (the PLP 1) having the PLPID of “1” belong to the same PLP group 1, “00 0001” indicating that it belongs to the PLP group 1 is set to both of PLP_GROUP_IDs. Meanwhile, the PLP (the PLP 2) having the PLPID of “2” is an independent PLP that belongs to no PLP group, and thus “00 0000” is set to PLP_GROUP_ID.

Further, in the system pipe model of the operation example 1-1 of FIG. 4, the three PLPs (the PLP 0 to the PLP 2) are transmitted, and thus “3” is set as NUM_PLP. Thus, in the case of the operation example 1-1, it is unnecessary to describe information related to the PLPs whose PLP_IDs are “3” to “63” among 64 PLPs that can be arranged in the ATSC 3.0.

As described above, in the operation example 1-1, the descriptor of an embodiment of the present technology of FIG. 5 is transmitted through (L1 signaling information of) the physical layer frame, and thus when the descriptor of an embodiment of the present technology of FIG. 5 is acquired, for example, the reception device 20 can recognize that the stream related to the ROUTE service is transmitted in the PLP 0 and the PLP 1 belonging to the PLP group 1, and the stream related to the MMT service is transmitted in the PLP 2 configured as an independent PLP. As a result, the reception device 20 can perform, for example, a process according to the ROUTE service or the MMT service, and thus it is possible to allow the plurality of transport protocols to coexist.

Further, through the descriptor of an embodiment of the present technology of FIG. 5, the reception device 20 can recognize that the stream of the LLS signaling information used in the ROUTE service is transmitted in the PLP 1 of the PLP 0 and the PLP 1 belonging to the PLP group 1, and the stream of the MMT signaling information used in the MMT service is transmitted in the PLP 2.

In other words, in the digital broadcasting standard such as the ATSC 3.0, when a plurality of PLPs can be arranged in one frequency band, there is one in which information (PLP_GROUP_ID) for grouping arbitrary PLPs is specified. Further, as described in the operation example 1-1, when a plurality of PLPs are grouped, the PLPs include a PLP in which the signaling information (for example, the LLS signaling information, the MMT signaling information, or the like) is transmitted in a layer higher than the physical layer and a PLP in which no signaling information is transmitted.

Here, since the information (ROUTE_SIGNALING_ENTRY and MMT_SIGNALING_ENTRY) indicating whether or not the signaling information transmitted in the layer higher than the physical layer is being transmitted is included in the descriptor of an embodiment of the present technology (FIG. 5) transmitted through (the L1 signaling information of) the physical layer frame and transmitted, the reception device 20 can analyze content of the descriptor of an embodiment of the present technology and recognize whether or not the signaling information (for example, the LLS signaling information, the MMT signaling information, or the like) is being transmitted in each PLP. Further, the reception device 20 can analyze content of the descriptor of an embodiment of the present technology and recognize the transport protocol (for example, the ROUTE, the MMT, or the like) used in the provided service from among the plurality of transport protocols.

Thus, it is possible to flexibly cope with various kinds of operation forms, for example, an operation form in which a specific component is shared by a plurality of services or an operation form in which a plurality of PLPs are grouped. Further, when the descriptor of an embodiment of the present technology of FIG. 5 is acquired, the reception device 20 can recognize the presence of the signaling information transmitted in the layer higher than the physical layer and a type thereof, and thus the reception device 20 can acquire the target signaling information promptly and reduce a processing time.

(2) Operation example 1-2

(System pipe model)
FIG. 6 is a diagram illustrating a system pipe model of the operation example 1-2 corresponding to an operation form in which the signaling information of the ROUTE service and the MMT service is transmitted through a common PLP when the first scheme is employed.

In FIG. 6, the PLP (the PLP 0) having the PLPID of “0” is transmitted in the broadcast waves (the RF Channel) having a predetermined frequency band (for example, 6 MHz). In the PLP 0, the NTP, the stream of the ROUTE service, and the stream of the MMT service are transmitted on the IP/UDP together with the stream of the LLS signaling information and the stream of the MMT signaling information.

In the PLP 0, the stream of the ROUTE service includes the SLS signaling information and the streams of the video, the audio, and the closed captions. Further, content C (for example, a television program) provided by the ROUTE service is configured with the components of the video, the audio, and the closed captions.

Here, the PLP 0 does not belong to a PLP group and is configured as an independent PLP. In other words, since the stream of the LLS signaling information is transmitted in the PLP 0 belonging to no PLP group, the reception device 20 acquires the FIT from the stream of the LLS signaling information and hold the FIT as the tuning information. Further, when the ROUTE service is selected, the reception device 20 acquires the SLS signaling information transmitted in the PLP 0 based on the tuning information (FIT). Then, the reception device 20 can acquire the streams of the video, the audio, and the closed captions based on the SLS signaling information of the PLP 0 and reproduce the content C of the PLP 0.

As described above, the PLP 0 does not belong to a PLP group and is configured as an independent PLP, and the LLS signaling information and the streams of the components are transmitted in the PLP 0. In other words, all the signaling information and the streams of the components related to a specific ROUTE service are transmitted through the PLP 0.

In the PLP 0, the stream of the MMT service includes the streams of the video, the audio, and the closed captions. Further, content D (for example, a television program) provided by the MMT service is configured with the components of the video, the audio, and the closed captions.

Here, the PLP 0 does not belong to a PLP group and is configured as an independent PLP. In other words, since the stream of the MMT signaling information is transmitted in the PLP 0 belonging to no PLP group, when the MMT service is selected, the reception device 20 acquires the streams of the video, the audio, and the closed captions based on the MMT signaling information of the PLP 0 and reproduces the content D of the PLP 0.

As described above, the PLP 0 does not belong to a PLP group and is configured as an independent PLP, and the MMT signaling information and the streams of the components are transmitted in the PLP 0. In other words, all the signaling information and the streams of the components related to a specific MMT service are transmitted through the PLP 0.

(Description example of descriptor of embodiment of the present technology)
For the system pipe model (FIG. 6) of the operation example 1-2 configured as described above, the presence or absence of transmission of the LLS signaling information and the MMT signaling information and an associated PLP group are indicated by the descriptor of an embodiment of the present technology for each PLP identified by the PLPID as illustrated in FIG. 7.

Referring to FIG. 7, in the PLP (the PLP 0) having the PLPID of “0,” (the streams of) the LLS signaling information and the MMT signaling information are transmitted, and thus “1” is set to both ROUTE_SIGNALING_ENTRY and MMT_SIGNALING_ENTRY. Further, the PLP (the PLP 0) having the PLPID of “0” does not belong to a PLP group and is an independent PLP, and thus “00 0000” is set to PLP_GROUP_ID.

Further, in the system pipe model of the operation example 1-2 of FIG. 6, only the one PLP (the PLP 0) is transmitted, and thus “1” is set as NUM_PLP. Thus, in the case of the operation example 1-2, it is unnecessary to describe information related to the PLPs whose PLP_IDs are “1” to “63” among 64 PLPs that can be arranged in the ATSC 3.0.

As described above, in the operation example 1-2, the descriptor of an embodiment of the present technology of FIG. 7 is transmitted through (the L1 signaling information of) the physical layer frame, and thus when the descriptor of an embodiment of the present technology of FIG. 7 is acquired, for example, the reception device 20 can recognize that the streams related to the ROUTE service and the MMT service are transmitted in the common PLP. As a result, the reception device 20 can perform, for example, a process according to the ROUTE service or the MMT service, and thus it is possible to allow the plurality of transport protocols to coexist.

Further, through the descriptor of an embodiment of the present technology of FIG. 7, the reception device 20 can recognize that both the stream of the LLS signaling information used in the ROUTE service and the stream of the MMT signaling information used in the MMT service are transmitted in the PLP 0. Thus, for example, when the descriptor of an embodiment of the present technology of FIG. 7 is acquired, the reception device 20 can recognize the presence of the signaling information transmitted in the layer higher than the physical layer and a type thereof, and thus the reception device 20 can acquire the target signaling information promptly and reduce a processing time.

(3) Operation example 2-1

(System pipe model)
FIG. 8 is a diagram illustrating a system pipe model of an operation example 2-1 corresponding to an operation form in which the signaling information of the ROUTE service and the MMT service is transmitted through different PLPs when the second scheme is employed.

In FIG. 8, the PLP (the PLP 0) having the PLPID of “0,” the PLP (the PLP 1) having the PLPID of “1,” and the PLP (the PLP 2) having the PLPID of “2” are transmitted in the broadcast waves (the RF Channel) having a predetermined frequency band (for example, 6 MHz). In the PLP 0 among the three PLPs, the NTP and the stream of the ROUTE service are transmitted on the IP/UDP.

In the PLP 0, the stream of the ROUTE service includes the SLS signaling information and the streams of the video, the audio, and the closed captions. Further, content A (for example, a television program) provided by the ROUTE service is configured with the components of the video, the audio, and the closed captions.

In FIG. 8, in addition to the stream of the ROUTE service including the robust audio, the LLS signaling information such as the FIT is transmitted in the PLP 1. In other words, the operation example 2-1 employing the second scheme differs from the operation example 1-1 employing the first scheme in that the LLS signaling information is transmitted on the IP/UDP (transmitted through the IP/UDP packet) without functioning as the L2 signaling information. In this case, in the reception device 20, the LLS signaling information stored in the IP/UDP packet is specified by a fixed IP address and a port number.

The reception device 20 acquires the FIT transmitted as the LLS signaling information in the PLP 1, and holds the FIT as the tuning information. Further, when the ROUTE service is selected, the reception device 20 can acquire the SLS signaling information transmitted in the PLP 0 based on the tuning information (the FIT) and reproduce the content A configured with the components of the video, the audio, and the closed captions. Here, the reception device 20 may cause the robust audio transmitted the PLP 1 to be reproduced instead of normal audio transmitted in the PLP 0.

In FIG. 8, in addition to the NTP and the stream of the MMT service, the MMT signaling information is transmitted in the PLP 2. In other words, the operation example 2-1 employing the second scheme differs from the operation example 1-1 employing the first scheme in that the MMT signaling information is transmitted on the IP/UDP (transmitted through the IP/UDP packet) without functioning as the L2 signaling information. In this case, in the reception device 20, the MMT signaling information stored in the IP/UDP packet is specified by a fixed IP address and a port number.

When the MMT service is selected, the reception device 20 can reproduce the content B configured with the components of the video, the audio, and the closed captions based on the MMT signaling information.

(Description example of descriptor of embodiment of the present technology)
For the system pipe model (FIG. 8) of the operation example 2-1 configured as described above, the presence or absence of transmission of the LLS signaling information and the MMT signaling information and an associated PLP group are indicated by the descriptor of an embodiment of the present technology for each PLP identified by a PLPID as illustrated in FIG. 9.

Referring to FIG. 9, in the PLP 0, (the streams of) neither the LLS signaling information nor the MMT signaling information is transmitted, and thus “0” is set to both ROUTE_SIGNALING_ENTRY and MMT_SIGNALING_ENTRY.

Meanwhile, in the PLP 1, the LLS signaling information is transmitted, and thus “1” is set to ROUTE_SIGNALING_ENTRY, and “0” is set to MMT_SIGNALING_ENTRY. Further, in the PLP 2, the MMT signaling information is transmitted, and thus “0” is set to ROUTE_SIGNALING_ENTRY, and “1” is set to MMT_SIGNALING_ENTRY.

Further, since the PLP 0 and the PLP 1 belong to the same PLP group 1, “00 0001” indicating that it belongs to the PLP group 1 is set to both of PLP_GROUP_IDs. Meanwhile, the PLP 2 is an independent PLP that belongs to no PLP group, and thus “00 0000” is set to PLP_GROUP_ID.

As described above, in the operation example 2-1, the descriptor of an embodiment of the present technology of FIG. 9 is transmitted through (L1 signaling information of) the physical layer frame, and thus when the descriptor of an embodiment of the present technology of FIG. 9 is acquired, for example, the reception device 20 can recognize that the stream related to the ROUTE service is transmitted in the PLP 0 and the PLP 1 belonging to the PLP group 1, and the stream related to the MMT service is transmitted in the PLP 2 configured as an independent PLP. As a result, the reception device 20 can perform, for example, a process according to the ROUTE service or the MMT service, and thus it is possible to allow the plurality of transport protocols to coexist.

Further, through the descriptor of an embodiment of the present technology of FIG. 9, the reception device 20 can recognize that the stream of the LLS signaling information used in the ROUTE service is transmitted in the PLP 1 of the PLP 0 and the PLP 1 belonging to the PLP group 1 or the stream of the MMT signaling information used in the MMT service is transmitted in the PLP 2. Thus, for example, when the descriptor of an embodiment of the present technology of FIG. 9 is acquired, the reception device 20 can recognize the presence of the signaling information transmitted in the layer higher than the physical layer and a type thereof, and thus the reception device 20 can acquire the target signaling information promptly and reduce a processing time.

(4) Operation example 2-2

(System pipe model)
FIG. 10 is a diagram illustrating a system pipe model of an operation example 2-2 corresponding to an operation form in which the signaling information of the ROUTE service and the MMT service is transmitted through a common PLP when the second scheme is employed.

In FIG. 10, the PLP (the PLP 0) having the PLPID of “0” is transmitted in the broadcast waves (the RF Channel) having a predetermined frequency band (for example, 6 MHz). In the PLP 0, in addition to the NTP, the stream of the ROUTE service, and the stream of the MMT service, the stream of the LLS signaling information and the stream of the MMT signaling information are transmitted on the IP/UDP.

In other words, the operation example 2-2 employing the second scheme differs from the operation example 1-2 employing the first scheme in that the LLS signaling information and the MMT signaling information are transmitted on the IP/UDP (transmitted through the IP/UDP packet) without functioning as the L2 signaling information. In this case, each of the LLS signaling information and the MMT signaling information stored in the IP/UDP packet is specified by a fixed IP address and a port number.

The reception device 20 acquires the FIT transmitted as the LLS signaling information in the PLP 0, and holds the FIT as the tuning information. Further, when the ROUTE service is selected, the reception device 20 can acquire the SLS signaling information transmitted in the PLP 0 based on the tuning information (the FIT) and reproduce the content C configured with the components of the video, the audio, and the closed captions.

When the MMT service is selected, the reception device 20 can reproduce the content D configured with the components of the video, the audio, and the closed captions based on the MMT signaling information.

(Description example of descriptor of embodiment of the present technology)
For the system pipe model (FIG. 10) of the operation example 2-2 configured as described above, the presence or absence of transmission of the LLS signaling information and the MMT signaling information and an associated PLP group are indicated by the descriptor of an embodiment of the present technology for each PLP identified by the PLPID as illustrated in FIG. 11.

Referring to FIG. 11, in the PLP 0, (the streams of) the LLS signaling information and the MMT signaling information are transmitted, and thus “1” is set to both ROUTE_SIGNALING_ENTRY and MMT_SIGNALING_ENTRY. Further, the PLP 0 does not belong to a PLP group and is an independent PLP, and thus “00 0000” is set to PLP_GROUP_ID.

As described above, in the operation example 2-2, the descriptor of an embodiment of the present technology of FIG. 11 is transmitted through (the L1 signaling information of) the physical layer frame, and thus when the descriptor of an embodiment of the present technology of FIG. 11 is acquired, for example, the reception device 20 can recognize that the streams related to the ROUTE service and the MMT service are transmitted in the common PLP. As a result, the reception device 20 can perform, for example, a process according to the ROUTE service or the MMT service, and thus it is possible to allow the plurality of transport protocols to coexist.

Further, through the descriptor of an embodiment of the present technology of FIG. 11, the reception device 20 can recognize that both the stream of the LLS signaling information used in the ROUTE service and the stream of the MMT signaling information used in the MMT service are transmitted in the PLP 0. Thus, for example, when the descriptor of an embodiment of the present technology of FIG. 11 is acquired, the reception device 20 can recognize the presence of the signaling information transmitted in the layer higher than the physical layer and a type thereof, and thus the reception device 20 can acquire the target signaling information promptly and reduce a processing time.

<4. Transmission method of signaling>

(Layer structure)
FIG. 12 is a diagram for describing a concept of a layer structure corresponding to the ATSC 3.0.

In FIG. 12, in a layer 3 (L3), an IP packet is transmitted. The IP packet includes an IP header, a UDP header, and data. In other words, the IP packet is the IP/UDP packet including the UDP packet. As data of the IP packet (the IP/UDP packet), a packet (the ROUTE packet or the MMT packet) according to a service, the NTP, and the like are arranged.

In a layer 2 (L2), a generic packet is transmitted as a transmission packet. The generic packet includes a generic header and a payload. One or more IP packets are arranged in the payload of the generic packet and encapsulated.

Here, when the first scheme is employed, the LLS signaling information or the MMT signaling information is arranged in the payload of the generic packet as the L2 signaling information.

In other words, as illustrated in T1 of FIG. 12, when the stream of the ROUTE service is transmitted, the LLS signaling information such as the FIT is arranged in the payload of the generic packet. Meanwhile, when the stream of the MMT service is transmitted, the MMT signaling information is arranged in the payload of the generic packet.

Further, when the second scheme is employed, the LLS signaling information or the MMT signaling information is arranged in the IP/UDP packet.

In other words, when the stream of the ROUTE service is transmitted, the LLS signaling information such as the FIT is arranged as the data of the IP/UDP packet as illustrated in T2 of FIG. 12. In this case, the ROUTE packet storing the SLS signaling information and the data of the component is arranged in the data of the IP/UDP packet as the data according to the ROUTE service. Meanwhile, when the stream of the MMT service is transmitted, the MMT signaling information is arranged as the data of the IP/UDP packet as illustrated in T2 of FIG. 12. In this case, the MMT packet storing the data of the component is arranged in the data of the IP/UDP packet as the data according to the MMT service.

A BB frame of a layer 1 (L1) corresponding to the physical layer is configured with a BB frame header and a payload. A plurality of generic packets are arranged in a payload of the BB frame and encapsulated. Further, in the layer 1, data obtained by scrambling a plurality of BB frames is mapped to an FEC frame, and an error correction parity of the physical layer is added to the data.

A physical layer frame (ATSC (Physical) Frame) of the layer 1 (L1) includes a bootstrap, a preamble, and a data portion. Further, data obtained by performing a physical layer process, for example, performing bit interleaving, a mapping process, and interleaving in the time direction and the frequency direction on a plurality of FEC frames is mapped to the data portion of the physical layer frame.

Here, the descriptor of an embodiment of the present technology (FIG. 3) can be arranged in the bootstrap or the preamble of the physical layer frame as illustrated in T3 of FIG. 12. For example, L1-post signaling information is arranged in the preamble of the physical layer frame, but content of the descriptor of an embodiment of the present technology can be described therein.

(Structure of L1-post signaling)
FIG. 13 is a diagram illustrating an example of a syntax of L1-post signaling corresponding to the ATSC 3.0 which is arranged in the preamble.

Referring to FIG. 13, ROUTE_SIGNALING_ENTRY of 1 bit, MMT_SIGNALING_ENTRY of 1 bit, and PLP_GROUP_ID of 6 bits specified in the descriptor of an embodiment of the present technology are arranged instead of PLP_GROUP_ID of 8 bits arranged in the PLP loop Thus, information indicating the presence or absence of transmission of the LLS signaling information and the MMT signaling information and an associated PLP group for each PLP identified by a PLPID is transmitted as the L1 signaling information of the physical layer.

FIG. 13 illustrates the example in which content of the descriptor of an embodiment of the present technology is arranged in the PLP loop of the L1-post signaling information, but the arrangement of the L1-post signaling information is an example, and the L1-post signaling information may be arranged at any other location. For example, the L1-post signaling information may be arranged in a bootstrap (FIG. 12) of the physical layer frame.

(Structure of bootstrap)
FIG. 14 is a diagram illustrating a structure of the bootstrap of the physical frame of FIG. 12.

FIG. 14 illustrates that bootstrap symbols 1 to 3 are transmitted as bootstrap signals when a horizontal direction indicates time, and the vertical direction indicates frequency. Each bootstrap symbol is capable of transmitting a signal of a maximum of 11 bits.

As illustrated in a syntax of FIG. 15, a bootstrap symbol 1 includes eas_wake_up of 1 bit, system_bandwidth of 2 bits, and min_time_to_next of 5 bits. Further, as illustrated in a syntax of FIG. 16, the bootstrap symbol 2 includes bsr_coefficient of 7 bits. Furthermore, as illustrated in a syntax of FIG. 17, the bootstrap symbol 3 includes preamble_structure of 6 bits and num_ldm_layers of 1 bit.

Here, Ns=4 is set, and the bootstrap symbols 1 to 3 are transmitted, but by setting a value of Ns to a value larger than 4, the bootstrap symbols corresponding to the number of PLPs to be used may be defined, and ROUTE_SIGNALING_ENTRY, MMT_SIGNALING_ENTRY, and PLP_GROUP_ID of each PLP may be transmitted as the bootstrap signal (the L1 signaling information).

FIG. 18 illustrates that bootstrap symbols 1 to 67 are transmitted as bootstrap signals when a horizontal direction indicates time, and the vertical direction indicates frequency. In the ATSC 3.0, it is possible to arrange a maximum of 64 PLPs in one frequency band, and thus the 64 bootstrap symbols 4 to 67 are added to the bootstrap symbols 1 to 3. Each bootstrap symbol is capable of transmitting a signal of a maximum of 11 bits.

As illustrated in a syntax of FIG. 19, the bootstrap symbol 4 includes ROUTE_SIGNALING_ENTRY of 1 bit, MMT_SIGNALING_ENTRY of 1 bit, and PLP_GROUP_ID of 6 bits for the PLP 0. Similarly, each of the bootstrap symbols 5 to 67 includes ROUTE_SIGNALING_ENTRY of 1 bit, MMT_SIGNALING_ENTRY of 1 bit, and PLP_GROUP_ID of 6 bits for each PLP (one of the PLP 1 to the PLP 63).

A syntax of the bootstrap symbol 5 among the bootstrap symbols 5 to 67 is illustrated in FIG. 20, and a syntax of the bootstrap symbol 67 is illustrated in FIG. 21. FIGS. 18 to 21 have been described in connection with the example in which the 64 PLPs that is the maximum number of PLPs in the ATSC 3.0 are used, but in practice, the bootstrap symbols corresponding to the number of PLPs to be used are used.

<5. Configurations of devices>

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

(Configuration of transmission device)
FIG. 22 is a diagram illustrating a configuration example of the transmission device 10 of FIG. 1.

Referring to FIG. 22, the transmission device 10 includes a control unit 101, a component acquiring unit 102, an encoder 103, a signaling generating unit 104, a signaling processing unit 105, a packet generating unit 106, a physical layer frame generating unit 107, and a transmitting unit 108.

The control unit 101 controls operations of the respective units of the transmission device 10.

The component acquiring unit 102 acquires data of (the components of) the video, the audio, the closed captions, and the like configuring the content (for example, the television program) provided by a specific service (for example, the ROUTE service or the MMT service), and supplies the acquired data to the encoder 103. The encoder 103 encodes the data of (the components of) the video, the audio, and the like supplied from the component acquiring unit 102 according to a predetermined encoding scheme, and supplies the encoded data to the packet generating unit 106.

As content, for example, corresponding content is acquired from a storage location of already recorded content according to a broadcasting time zone, or live content is acquired from a studio or a site.

The signaling generating unit 104 acquires primary data for generating the signaling information from an external server, an internal storage, or the like. The signaling generating unit 104 generates the signaling information using the primary data of the signaling information.

Here, the L1 signaling information and the signaling information according to a service are generated as the signaling information. For example, the L1-post signaling information, the bootstrap information, or the like are generated as the L1 signaling information. When the stream of the ROUTE service is transmitted, the LLS signaling information and the SLS signaling information are generated. When the stream of the MMT service is transmitted, the MMT signaling information is generated.

Among the signaling information, the LLS signaling information, the SLS signaling information, and the MMT signaling information are supplied to the packet generating unit 106, and the L1-post signaling information and the bootstrap information are supplied to the physical layer frame generating unit 107.

The transmission information (ROUTE_SIGNALING_ENTRY, MMT_SIGNALING_ENTRY, and PLP_GROUP_ID) indicating the presence or absence of transmission of the LLS signaling information and the MMT signaling information and the associated PLP group which is specified as the descriptor of an embodiment of the present technology (FIG. 3) can be arranged in at least one of the L1-post signaling information and the bootstrap information.

For example, when the descriptor of an embodiment of the present technology is arranged in the L1-post signaling information, the transmission information is arranged in the PLP loop of the L1-post signaling information (FIG. 13). Further, for example, when the descriptor of an embodiment of the present technology is arranged in the bootstrap information, the transmission information is arranged in the bootstrap symbols (FIG. 18) corresponding to the number of PLPs to be used.

The packet generating unit 106 generates the packet (the ROUTE packet or the MMT packet) according to the service and the IP packet (the IP/UDP packet) using the data of (the components of) the video, the audio, and the like supplied from the encoder 103 and the signaling information supplied from the signaling processing unit 105. Further, the packet generating unit 106 generates the generic packet by encapsulating one or more IP packets, and supplies the generic packet to the physical layer frame generating unit 107.

Specifically, when the first scheme is employed, and the stream of the ROUTE service is transmitted, the ROUTE packet storing the SLS signaling information and the data of the component is arranged in the data of the IP/UDP packet as the data according to the ROUTE service. Further, the IP/UDP packet storing the ROUTE packet and the LLS signaling information serving as the L2 signaling information are arranged in the payload of the generic packet.

When the first scheme is employed, and the stream of the MMT service is transmitted, the MMT packet storing the data of the component is arranged in the data of the IP/UDP packet as the data according to the MMT service. Further, the IP/UDP packet storing the MMT packet and the MMT signaling information serving as the L2 signaling information are arranged in the payload of the generic packet.

On the other hand, when the second scheme is employed, and the stream of the ROUTE service is transmitted, in addition to the ROUTE packet storing the SLS signaling information and the data of the component, the LLS signaling information is arranged in the data of the IP/UDP packet. Further, the IP/UDP pack storing the ROUTE packet and the LLS signaling information is arranged in the payload of the generic packet.

When the second scheme is employed, and the stream of the MMT service is transmitted, in addition to the MMT packet storing the data of the component, the MMT signaling information is arranged in the data of the IP/UDP packet. Further, the IP/UDP pack storing the MMT packet and the MMT signaling information is arranged in the payload of the generic packet.

The physical layer frame generating unit 107 generates the physical layer frame by encapsulating a plurality of generic packets supplied from the packet generating unit 106, and supplies the physical layer frame to the transmitting unit 108. In the physical layer frame, the bootstrap information supplied from the signaling processing unit 105 is arranged in the bootstrap, and the L1-post signaling information supplied from the signaling processing unit 105 is arranged in the preamble.

In other words, the L1 signaling information such as the L1-post signaling information or the bootstrap information includes the transmission information (ROUTE_SIGNALING_ENTRY, MMT_SIGNALING_ENTRY, and PLP_GROUP_ID) indicating the presence or absence of transmission of the LLS signaling information and the MMT signaling information and the associated PLP group which is specified as the descriptor of an embodiment of the present technology (FIG. 3), and thus the information is arranged in the bootstrap or the preamble of the physical layer frame.

The transmitting unit 108 performs, for example, a process such as Orthogonal Frequency Division Multiplexing (OFDM) modulation on the physical layer frame supplied from the physical layer frame generating unit 107, and transmits the resulting physical layer frame through an antenna 111 as the digital broadcasting signal.

In FIG. 22, the signaling information has been described as being generated by the signaling generating unit 104, but the packet generating unit 106 or the physical layer frame generating unit 107 may generate the signaling information. For example, the packet generating unit 106 may generate the LLS signaling information, the SLS signaling information, or the MMT signaling information and store the generated information in the packet. Further, for example, the physical layer frame generating unit 107 may generate the L1-post signaling information, or the bootstrap information and arrange the generated information in the physical layer frame. In the transmission device 10 of FIG. 22, all the functional blocks need not necessarily be arranged in a single physical device, and at least some functional blocks may be configured as a device physically independent of the other functional blocks.

(Configuration of reception device)
FIG. 23 is a diagram illustrating a configuration example of the reception device 20 of FIG. 1.

Referring to FIG. 23, the reception 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 operations of the respective units of the reception device 20.

The receiving unit 202 receives the digital broadcasting signal transmitted from the transmission device 10 through the antenna 211, performs a process such as OFDM demodulation, and supplies the physical layer frame obtained in this way to the physical layer frame processing unit 203.

The physical layer frame processing unit 203 processes the physical layer frame supplied from the receiving unit 202, extracts the generic packet, and supplies the generic packet to the packet processing unit 204. Further, the physical layer frame processing unit 203 acquires the bootstrap information arranged in the bootstrap of the physical layer frame and L1-post signaling information arranged in the preamble, and supplies the bootstrap information and the L1-post signaling information to the signaling processing unit 205.

The packet processing unit 204 processes the generic packet supplied from the physical layer frame processing unit 203. Further, the packet processing unit 204 processes the IP packet (the IP/UDP packet) extracted from the generic packet and the packet (the ROUTE packet or the MMT packet) according to the service, and extracts the signaling information and the data of the component. Then, the signaling information is supplied to the signaling processing unit 205, and the data of the component is supplied to the decoder 206.

Specifically, when the first scheme is employed by the transmission device 10 at the transmission side, and the stream of the ROUTE service is transmitted, the LLS signaling information serving as the L2 signaling information is extracted from the payload of the generic packet, and the SLS signaling information and the data of the component are extracted from the ROUTE packet stored in the IP/UDP packet.

Further, when the first scheme is employed, and the stream of the MMT service is transmitted, the MMT signaling information serving as the L2 signaling information is extracted from the payload of the generic packet, and the data of the component is extracted from the MMT packet stored in the IP/UDP packet.

On the other hand, when the second scheme is employed by the transmission device 10 at the transmission side, and the stream of the ROUTE service is transmitted, the LLS signaling information is extracted from the IP/UDP packet arranged in the payload of the generic packet, and the SLS signaling information and the data of the component are extracted from the ROUTE packet stored in the IP/UDP packet.

Further, when the second scheme is employed, and the stream of the MMT service is transmitted, the MMT signaling information is extracted from the IP/UDP packet arranged in the payload of the generic packet, and the data of the component is extracted from the MMT packet stored in the 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 the processed signaling information to the control unit 201.

Here, the L1 signaling information and the signaling information according to a service are processed as the signaling information. For example, the L1-post signaling information, the bootstrap information, or the like are processed as the L1 signaling information. When the stream of the ROUTE service is being transmitted, the LLS signaling information and the SLS signaling information are processed. When the stream of the MMT service is being transmitted, the MMT signaling information is processed.

The transmission information (ROUTE_SIGNALING_ENTRY, MMT_SIGNALING_ENTRY, and PLP_GROUP_ID) indicating the presence or absence of transmission of the LLS signaling information and the MMT signaling information and the associated PLP group which is specified as the descriptor of an embodiment of the present technology (FIG. 3) is arranged in at least one of the L1-post signaling information and the bootstrap information.

The control unit 201 controls the operations of the respective units based on the signaling information supplied from the signaling processing unit 205. For example, the control unit 201 controls, for example, the process performed by the physical layer frame processing unit 203 or the packet processing unit 204 based on the L1-post signaling information, the bootstrap information, or the like.

Further, for example, when the ROUTE service is selected, the control unit 201 controls packet filtering performed by the packet processing unit 204 based on the LLS signaling information and the SLS signaling information such that the data (the ROUTE packet) of (the components of) the video, the audio, and the like is supplied to the decoder 206. Further, for example, when the MMT service is selected, the control unit 201 controls packet filtering performed by the packet processing unit 204 based on the MMT signaling information such that the data (the MMT packet) of (the components of) the video, the audio, and the like is supplied to the decoder 206.

The decoder 206 decodes the data of (the components of) the video, the audio, and the like supplied from the packet processing unit 204 according to a predetermined decoding scheme, supplies video data obtained as a result to the display unit 207, and supplies audio data to the speaker 208.

The display unit 207 displays a video corresponding to the video data supplied from the decoder 206. Further, the speaker 208 outputs a sound corresponding to the audio data supplied from the decoder 206. As a result, in the reception device 20, the video and the sound of the content (for example, the television program) provided according to the service (the ROUTE service or the MMT service) selected by the user are output.

In FIG. 23, the signaling information has been described as being 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. For example, the physical layer frame processing unit 203 may process the L1-post signaling information, or the bootstrap information. Further, for example, the packet processing unit 204 may process the LLS signaling information, the SLS signaling information, or the MMT signaling information. FIG. 23 illustrates the configuration in which the display unit 207 and the speaker 208 are internally mounted when 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, but, for example, when the reception device 20 is a video recorder, a set top box, or the like, the display unit 207 and the speaker 208 are externally mounted.

<6. Flow of process executed by devices>

Next, the flow of a process performed by the respective devices configuring the transmission system 1 of FIG. 1 will be described with reference to flowcharts of FIGS. 24 to 25.

(Transmission process)
First, the flow of a transmission process performed by the transmission device 10 of FIG. 1 will be described with reference to a flowchart of FIG. 24.

In step S101, the component acquiring unit 102 acquires the components of the video, the audio, and the like. The data of the components acquired by the component acquiring unit 102 is encoded by the encoder 103.

In step S102, the signaling generating unit 104 generates the signaling information. Here, the L1-post signaling information or the bootstrap information is generated as the L1 signaling information. Further, when the stream of the ROUTE service is transmitted, the LLS signaling information or the SLS signaling information is generated. Further, when the stream of the MMT service is transmitted, the MMT signaling information is generated.

In step S103, a packet and frame generation process is performed.

In the packet and frame generation process, the packet generating unit 106 generates either of the ROUTE packet and the MMT packet, the IP packet (the IP/UDP packet), and the generic packet. Further, the physical layer frame generating unit 107 generates the physical layer frame.

Here, when the stream of the ROUTE service is transmitted in common in the first scheme and the second scheme, the SLS signaling information and the data of the component are arranged in the ROUTE packet stored in the IP/UDP packet, and when the stream of the MMT service is transmitted, the data of the component is arranged in the MMT packet stored in the IP/UDP packet.

Further, when the first scheme is employed, if the stream of the ROUTE service is transmitted, the LLS signaling information is arranged in the payload of the generic packet, and if the stream of the MMT service is transmitted, the MMT signaling information is arranged in the payload of the generic packet. Further, when the second scheme is employed, if the stream of the ROUTE service is transmitted, the LLS signaling information is arranged in the data of the IP/UDP packet, and if the stream of the MMT service is transmitted, the MMT signaling information is arranged in the data of the IP/UDP packet.

Further, the transmission information (ROUTE_SIGNALING_ENTRY, MMT_SIGNALING_ENTRY, and PLP_GROUP_ID) specified as the descriptor of an embodiment of the present technology (FIG. 3) is arranged in the PLP loop of the L1-post signaling information arranged in the preamble of the physical layer frame or the bootstrap information arranged in the bootstrap.

In step S104, the transmitting unit 108 processes the physical layer frame, and transmits the processed physical layer frame through the antenna 111 as the digital broadcasting signal.

The flow of the transmission process has been described above.

(Reception process)
Next, the flow of the reception process performed by the reception device 20 of FIG. 1 will be described with reference to a flowchart of FIG. 25. The reception process is a processed performed when a specific service such as the ROUTE service or the MMT service is selected.

In step S201, the receiving unit 202 receives the digital broadcasting signal transmitted from the transmission device 10 through the antenna 211.

In step S202, a packet and frame process is performed.

In the packet and frame process, the physical layer frame processing unit 203 processes the physical layer frame. Further, the packet processing unit 204 processes the generic packet, the IP packet (the IP/UDP packet), and either of the ROUTE packet and the MMT packet.

In step S203, the signaling processing unit 205 processes the signaling information supplied from the physical layer frame processing unit 203 or the packet processing unit 204. Further, the control unit 201 controls the operations of the respective units based on the processing result of the signaling information by the signaling processing unit 205.

Here, for example, since the transmission information (ROUTE_SIGNALING_ENTRY, MMT_SIGNALING_ENTRY, and PLP_GROUP_ID) specified as the descriptor of an embodiment of the present technology (FIG. 3) is arranged in the PLP loop of the L1-post signaling information arranged in the preamble of the physical layer frame or the bootstrap information arranged in the bootstrap, the signaling processing unit 205 supplies the processing result of the L1 signaling information to the control unit 201.

The control unit 201 can recognize the transport protocol in which the stream of the service transmitted in each PLP is being transmitted, for example, the ROUTE, the MMT, or the like, based on the transmission information (ROUTE_SIGNALING_ENTRY, MMT_SIGNALING_ENTRY, and PLP_GROUP_ID) and recognize the PLP in which the signaling information used in the service such as the ROUTE service or the MMT service is being transmitted. Thus, the control unit 201 can control the packet processing unit 204, the signaling processing unit 205, and the like, for example, such that the LLS signaling information is acquired from a specific PLP among the PLPs belonging to the PLP group in which the stream of the ROUTE service is transmitted, or the MMT signaling information is acquired from a specific PLP among the PLPs belonging to the PLP group in which the stream of the MMT service is transmitted.

Here, when the first scheme is employed, if the ROUTE service is selected, the LLS signaling information is extracted from the payload of the generic packet and the MMT service is selected, the MMT signaling information is extracted from the payload of the generic packet. Further, when the second scheme is employed, if the ROUTE service is selected, the LLS signaling information is extracted from the IP/UDP packet, and if the MMT service is selected, the MMT signaling information is extracted from the IP/UDP packet.

In step S204, the control unit 201 controls the operations of the respective units based on the signaling information acquired by the signaling processing unit 205 such that the decoder 206 decodes the data of the components of the video, the audio, and the like. Thus, the video of the content is displayed on the display unit 207, and the sound thereof is output from the speaker 208.

Here, when the ROUTE service is selected in common in the first scheme and the second scheme, the SLS signaling information and the data of the component are extracted from the ROUTE packet stored in the IP/UDP packet, and when the MMT service is selected, the data of the component is extracted from the MMT packet stored in the IP/UDP packet.

The flow of the reception process has been described above.

<7. Modified example>

In the above description, the ATSC (for example, ATSC3.0) that is employed in the USA and the like has been described as the digital television broadcasting standard, but the present technology can be applied to Integrated Services Digital Broadcasting (ISDB) employed in Japan and the like, Digital Video Broadcasting (DVB) employed in some European countries, or the like. The transmission path 30 (FIG. 1) is not limited to digital terrestrial broadcasting and may be employed in digital satellite broadcasting, digital cable television broadcasting, or the like.

Further, the name of the signaling information such as the FIT is an example, and any other name may be used. When any other name is used as the name of the signaling information, substantive content of the signaling information is not changed by a simple formal change in the name.

<8. Configuration of computer>

The series of processes described above can be executed by hardware or can be executed by software. When the series of processes is executed by software, a program that constructs such software is installed in a computer. FIG. 26 is a diagram showing a configuration example of the hardware of a computer that executes the series of processes described above according to a program.

In a computer 900, a Central Processing Unit (CPU) 901, a Read Only Memory (ROM) 902, and a Random Access Memory (RAM) 903 are mutually connected by a bus 904. An input/output interface 905 is also 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 is configured as a keyboard, a mouse, a microphone or the like. The output unit 907 is configured as a display, a speaker or the like. The recording unit 908 is configured as a hard disk, a non-volatile memory or the like. The communication unit 909 is configured as a network interface or the like. The drive 910 drives a removable medium 911 such as a magnetic disk, an optical disc, a magneto-optical disc, a semiconductor memory or the like.

In the computer 900 configured as described above, the series of processes described earlier is performed such that the CPU 901 loads a program recorded in the ROM 902 or the recording unit 908 via the input/output interface 905 and the bus 904 into the RAM 903 and executes the program.

For example, the program executed by the computer 900 (the CPU 901) may be provided by being recorded on the removable medium 911 as a packaged medium or the like. The program can also be provided via a wired or wireless transfer medium, such as a local area network, the Internet, or digital satellite broadcasting.

In the computer 900, as the removable medium 911 is loaded into the drive 910, the program can be installed in the recording unit 908 via the input/output interface 905. It is also possible to receive the program from a wired or wireless transfer medium using the communication unit 909 and install the program in the recording unit 908. As another alternative, the program can be installed in advance in the ROM 902 or the recording unit 908.

Note that the processes performed by the computer according to the program need not be processes that are carried out in a time series in the order described in the flowcharts of this specification. In other words, the processes performed by the computer according to the program include processes that are carried out in parallel or individually (for example, parallel processes or processes by objects). Further, the program may be processed by a single computer (processor) or distributedly processed by a plurality of computers.

Embodiments of the present technology are not limited to the embodiments described above, and various changes can be made without departing from the gist of the present technology.

Additionally, the present technology may also be configured as below.

(1)
A transmission device, including:
circuitry configured to
generate transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols; and
transmit the transmission information in first control information.
(2)
The transmission device according to (1),
wherein the transmission information indicates whether or not second control information corresponding to the specific transport protocol is transmitted with the stream of the service.
(3)
The transmission device according to (1) or (2),
wherein the circuitry is configured to transmit the stream of the service on a transport layer corresponding to a predetermined standard.
(4)
The transmission device according to any of claims (1) to (3),

wherein the circuitry is configured to transmit the first control information in a transmission frame of a physical layer corresponding to a predetermined standard.
(5)
The transmission device according to (4),
wherein the circuitry is configured to transmit, in the physical layer, one or more physical layer pipes (PLPs), and
wherein the transmission information further identifies one or more group identifiers for the one or more PLPs.
(6)
The transmission device according to (5),
wherein the circuitry is configured to transmit, in the physical layer, a plurality of PLPs, and
wherein each of the plurality of PLPs belongs to one or more PLP groups.(7)
The transmission device according to (6),
wherein the transmission information indicates whether or not second control information corresponding to the specific transport protocol is transmitted with the stream of the service,
wherein the predetermined standard corresponds to an Internet Protocol (IP) transmission scheme, and
wherein the second control information is arranged in a payload of a transmission packet that is capable of storing an IP packet.
(8)
The transmission device according to (6),
wherein the transmission information indicates whether or not second control information corresponding to the specific transport protocol is transmitted with the stream of the service,
wherein the predetermined standard corresponds to an IP transmission scheme, and
wherein the second control information is arranged in a User Datagram Protocol (UDP) packet included in an IP packet.
(9)
The transmission device according to any of (1) to (8),
wherein the predetermined standard is Advanced Television Systems Committee (ATSC) 3.0.
(10)
The transmission device according to any one of (1) to (9),
wherein the plurality of transport protocols include a Real-Time Object Delivery over Unidirectional Transport (ROUTE) and an MPEG Media Transport (MMT).
(11)
The transmission device according to (10),
wherein the transmission information indicates whether or not second control information corresponding to the specific transport protocol is transmitted with the stream of the service, and
wherein the second control information includes signaling information corresponding to the ROUTE and signaling information corresponding to the MMT.
(12)
The transmission device according to any of (1) to (11),
wherein the first control information is arranged in a bootstrap or a preamble in a transmission frame of a physical layer configured with the bootstrap, the preamble, and a data portion.
(13)
A method of a transmission device for transmitting transmission information, the method including:
generating, by circuitry of the transmission device, transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols; and
transmitting, by the circuitry of the transmission device, the transmission information in first control information.
(14)
A reception device, including:
circuitry configured to
receive transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols, the transmission information being included in first control information and
control processing of the stream of the service transmitted using the specific transport protocol based on second control information corresponding to the specific transport protocol, the second control information being acquired based on the transmission information.
(15)
The reception device according to (14),wherein the transmission information indicates whether or not the second control information is transmitted with the stream of service.
(16)
The reception device according to (14) or (15),
wherein the circuitry is configured to receive the stream of the service that is transmitted on a transport layer corresponding to a predetermined standard.
(17)
The reception device according to any of (14) to (16),
wherein the circuitry is configured to receive the first control information in a transmission frame of a physical layer corresponding to a predetermined standard.
(18)
The reception device according to (17),
wherein the circuitry is configured to receive one or more physical layer pipes (PLPs), transmitted in the physical layer, and
wherein the transmission information further identifies one or more group identifiers for the one or more PLPs.
(19)
The reception device according to (18),
wherein the circuitry is configured to receive a plurality of PLPs, and
wherein each of the plurality of PLPs belongs to one or more PLP groups.
(20)
The reception device according to (19),
wherein the predetermined standard corresponds to an Internet Protocol (IP) transmission scheme, and
wherein the second control information is arranged in a payload of a transmission packet that is capable of storing an IP packet.
(21)
The reception device according to (19),
wherein the predetermined standard corresponds to an IP transmission scheme, and
wherein the second control information is arranged in a User Datagram Protocol (UDP) packet included in an IP packet.
(22)
The reception device according to any of (14) to (21),
wherein the predetermined standard is Advanced Television Systems Committee (ATSC) 3.0.
(23)
The reception device according to any of (14) to (22),
wherein the plurality of transport protocols include a Real-Time Object Delivery over Unidirectional Transport (ROUTE) and an MPEG Media Transport (MMT).
(24)
The reception device according to (23),
wherein the second control information includes signaling information corresponding to the ROUTE and signaling information corresponding to the MMT.
(25)
The reception device according to any of (14) to (24),
wherein the first control information is arranged in a bootstrap or a preamble in a transmission frame of a physical layer configured with the bootstrap, the preamble, and a data portion.
(26)
A method of a reception device for processing a stream of service, the method comprising:
receiving, by circuitry of the reception device, transmission information indicating whether or not the stream of the service is transmitted using a specific transport protocol among a plurality of transport protocols, the transmission information being included in first control information; and
controlling, by the circuitry of the reception device, the processing of the stream of the service transmitted using the specific transport protocol based on second control information corresponding to the specific transport protocol, the second control information being acquired based on the transmission information.
(27)
A transmission device, including:
a generating unit configured to generate transmission information indicating whether or not a stream of a service using a specific transport protocol among a plurality of transport protocols on a transport layer specified in a predetermined standard is being transmitted; and
a transmitting unit configured to include the transmission information in first control information arranged in a frame of a physical layer corresponding to the predetermined standard and transmit the transmission information.
(28)
The transmission device according to (27),
wherein the transmission information includes information indicating whether or not second control information corresponding to the specific transport protocol is being transmitted.
(29)
The transmission device according to (28),
wherein, in the physical layer, data is transmitted for every one or more physical layer pipes (PLPs) that are capable of being grouped, and
wherein the transmission information further includes information identifying a PLP group serving as a group of the PLPs.
(30)
The transmission device according to (29),
wherein each of the PLPs is able to belong to one or more PLP groups.
(31)
The transmission device according to any of (28) to (30),
wherein the predetermined standard corresponds to an Internet Protocol (IP) transmission scheme, and
wherein the second control information is arranged in a payload of a transmission packet that is capable of storing an IP packet and transmitted.
(32)
The transmission device according to any of (28) to (30),
wherein the predetermined standard corresponds to an IP transmission scheme, and
wherein the second control information is arranged in a User Datagram Protocol (UDP) packet included in an IP packet and transmitted.
(33)
The transmission device according to any of (27) to (32),
wherein the predetermined standard is Advanced Television Systems Committee (ATSC) 3.0, and
wherein the plurality of transport protocols include a Real-Time Object Delivery over Unidirectional Transport (ROUTE) and an MPEG Media Transport (MMT).
(34)
The transmission device according to (33),
wherein the second control information includes signaling information corresponding to the ROUTE and signaling information corresponding to the MMT.
(35)
The transmission device according to (33) or (34),
wherein the first control information is arranged in a bootstrap or a preamble in a frame of the physical layer configured with the bootstrap, the preamble, and a data portion.
(36)
A transmission method of a transmission device, including:
generating, by the transmission device, transmission information indicating whether or not a stream of a service using a specific transport protocol among a plurality of transport protocols on a transport layer specified in a predetermined standard is being transmitted; and
including, by the transmission device, the transmission information in first control information arranged in a frame of a physical layer corresponding to the predetermined standard and transmitting the transmission information.
(37)
A reception device, including:
a receiving unit configured to receive transmission information indicating whether or not a stream of a service using a specific transport protocol among a plurality of transport protocols on a transport layer specified in a predetermined standard is being transmitted, the transmission information being included in first control information arranged in a frame of a physical layer corresponding to the predetermined standard; and
a control unit configured to control operations of respective units that process the stream of the service using the specific transport protocol based on second control information corresponding to the specific transport protocol, the second control information being acquired according to the transmission information.
(38)
The reception device according to (37),
wherein the transmission information includes information indicating whether or not the second control information is being transmitted.
(39)
The reception device according to (38),
wherein, in the physical layer, data is transmitted for every one or more physical layer pipes (PLPs) that are capable of being grouped, and
wherein the transmission information further includes information identifying a PLP group serving as a group of the PLPs.
(40)
The reception device according to (39),
wherein each of the PLPs is able to belong to one or more PLP groups.
(41)
The reception device according to any of (37) to (40),
wherein the predetermined standard corresponds to an Internet Protocol (IP) transmission scheme, and
wherein the second control information is arranged in a payload of a transmission packet that is capable of storing an IP packet and transmitted.
(42)
The reception device according to any of (37) to (40),
wherein the predetermined standard corresponds to an IP transmission scheme, and
wherein the second control information is arranged in a User Datagram Protocol (UDP) packet included in an IP packet and transmitted.
(43)
The reception device according to (37),
wherein the predetermined standard is Advanced Television Systems Committee (ATSC) 3.0, and
wherein the plurality of transport protocols include a Real-Time Object Delivery over Unidirectional Transport (ROUTE) and an MPEG Media Transport (MMT).
(44)
The reception device according to (43),
wherein the second control information includes signaling information corresponding to the ROUTE and signaling information corresponding to the MMT.
(45)
The reception device according to (43) or (44),
wherein the first control information is arranged in a bootstrap or a preamble in a frame of the physical layer configured with the bootstrap, the preamble, and a data portion.
(46)
A reception method of a reception device, including:
receiving, by the reception device, transmission information indicating whether or not a stream of a service using a specific transport protocol among a plurality of transport protocols on a transport layer specified in a predetermined standard is being transmitted, the transmission information being included in first control information arranged in a frame of a physical layer corresponding to the predetermined standard; and
controlling, by the reception device, operations of respective units that process the stream of the service using the specific transport protocol based on second control information corresponding to the specific transport protocol, the second control information being acquired according to the transmission information.

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

Claims

A transmission device, comprising:
circuitry configured to
generate transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols; and
transmit the transmission information in first control information.
The transmission device according to claim 1,
wherein the transmission information indicates whether or not second control information corresponding to the specific transport protocol is transmitted with the stream of the service.
The transmission device according to claim 1,
wherein the circuitry is configured to transmit the stream of the service on a transport layer corresponding to a predetermined standard.
The transmission device according to claim 1,
wherein the circuitry is configured to transmit the first control information in a transmission frame of a physical layer corresponding to a predetermined standard.
The transmission device according to claim 4,
wherein the circuitry is configured to transmit, in the physical layer, one or more physical layer pipes (PLPs), and
wherein the transmission information further identifies one or more group identifiers for the one or more PLPs.
The transmission device according to claim 5,
wherein the circuitry is configured to transmit, in the physical layer, a plurality of PLPs, and
wherein each of the plurality of PLPs belongs to one or more PLP groups.
The transmission device according to claim 6,
wherein the transmission information indicates whether or not second control information corresponding to the specific transport protocol is transmitted with the stream of the service,
wherein the predetermined standard corresponds to an Internet Protocol (IP) transmission scheme, and
wherein the second control information is arranged in a payload of a transmission packet that is capable of storing an IP packet.
The transmission device according to claim 6,
wherein the transmission information indicates whether or not second control information corresponding to the specific transport protocol is transmitted with the stream of the service,
wherein the predetermined standard corresponds to an IP transmission scheme, and
wherein the second control information is arranged in a User Datagram Protocol (UDP) packet included in an IP packet.
The transmission device according to claim 1,
wherein the predetermined standard is Advanced Television Systems Committee (ATSC) 3.0.
The transmission device according to claim 1,
wherein the plurality of transport protocols include a Real-Time Object Delivery over Unidirectional Transport (ROUTE) and an MPEG Media Transport (MMT).
The transmission device according to claim 10,
wherein the transmission information indicates whether or not second control information corresponding to the specific transport protocol is transmitted with the stream of the service, and
wherein the second control information includes signaling information corresponding to the ROUTE and signaling information corresponding to the MMT.
The transmission device according to claim 1,
wherein the first control information is arranged in a bootstrap or a preamble in a transmission frame of a physical layer configured with the bootstrap, the preamble, and a data portion.
A method of a transmission device for transmitting transmission information, the method comprising:
generating, by circuitry of the transmission device, transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols; and
transmitting, by the circuitry of the transmission device, the transmission information in first control information.
A reception device, comprising:
circuitry configured to
receive transmission information indicating whether or not a stream of a service is transmitted using a specific transport protocol among a plurality of transport protocols, the transmission information being included in first control information and
control processing of the stream of the service transmitted using the specific transport protocol based on second control information corresponding to the specific transport protocol, the second control information being acquired based on the transmission information.
The reception device according to claim 14,
wherein the transmission information indicates whether or not the second control information is transmitted with the stream of service.
The reception device according to claim 14,
wherein the circuitry is configured to receive the stream of the service that is transmitted on a transport layer corresponding to a predetermined standard.
The reception device according to claim 14,
wherein the circuitry is configured to receive the first control information in a transmission frame of a physical layer corresponding to a predetermined standard.
The reception device according to claim 17,
wherein the circuitry is configured to receive one or more physical layer pipes (PLPs), transmitted in the physical layer, and
wherein the transmission information further identifies one or more group identifiers for the one or more PLPs.
The reception device according to claim 18,
wherein the circuitry is configured to receive a plurality of PLPs, and
wherein each of the plurality of PLPs belongs to one or more PLP groups.
The reception device according to claim 19,
wherein the predetermined standard corresponds to an Internet Protocol (IP) transmission scheme, and
wherein the second control information is arranged in a payload of a transmission packet that is capable of storing an IP packet.
The reception device according to claim 19,
wherein the predetermined standard corresponds to an IP transmission scheme, and
wherein the second control information is arranged in a User Datagram Protocol (UDP) packet included in an IP packet.
The reception device according to claim 14,
wherein the predetermined standard is Advanced Television Systems Committee (ATSC) 3.0.
The reception device according to claim 14,
wherein the plurality of transport protocols include a Real-Time Object Delivery over Unidirectional Transport (ROUTE) and an MPEG Media Transport (MMT).
The reception device according to claim 23,
wherein the second control information includes signaling information corresponding to the ROUTE and signaling information corresponding to the MMT.
The reception device according to claim 14,
wherein the first control information is arranged in a bootstrap or a preamble in a transmission frame of a physical layer configured with the bootstrap, the preamble, and a data portion.
A method of a reception device for processing a stream of service, the method comprising:
receiving, by circuitry of the reception device, transmission information indicating whether or not the stream of the service is transmitted using a specific transport protocol among a plurality of transport protocols, the transmission information being included in first control information; and
controlling, by the circuitry of the reception device, the processing of the stream of the service transmitted using the specific transport protocol based on second control information corresponding to the specific transport protocol, the second control information being acquired based on the transmission information.