KR101885846B1 - Method and apparatus for transmitting/receiving data stream in a digital broadcasting system - Google Patents

Abstract

The present invention relates to a broadcast communication system, and more particularly, to a method and apparatus for transmitting and receiving a data stream in a digital video broadcasting system. A method of transmitting data including a data stream in a broadcasting system according to the present invention includes segmenting the data stream into a plurality of segments, transmitting a preamble portion carrying signaling information, Generating a frame including a part of the frame, and transmitting the frame.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method and apparatus for transmitting and receiving data streams in a digital broadcasting system,

The present invention relates to a broadcasting system, and more particularly, to a method and apparatus for transmitting and receiving a data stream in a digital video broadcasting system.

A broadcast system, such as a Digital Video Broadcasting (DVB) system, transmits data in the form of a series of frames. A digital video broadcasting system, for example, operates in accordance with the ^{DVB-T2 (Terrestrial 2 nd Generation} ) standard, ATSC (Advanced Televisions Systems Committee), ISDB (Integrated Services Digital Broadcasting) or DMB (Digital Multimedia Broadcasting) standard. Each frame typically includes a preamble section and a data section that are time-multiplexed. The data portion may comprise data arranged in the form of a plurality of data streams, which may be referred to as physical layer pipes (PLPs). The physical layer pipe can deliver services, such as video channels, to the user, for example. Receipt of data from frames and reception of data streams may be assisted by some sort of communication protocol signaling typically carried in the preamble of that frame, where the signaling is referred to as "out-of- quot; band: OB) signaling ". And the signaling may be carried on the data portion of the previous frame, in which case the signaling may be referred to as "in-band (IB) signaling ". The signaling may be referred to as physical layer signaling or "Layer 1 (L1) signaling ". The signaling may indicate a modulation or coding scheme used to decode the data and may indicate, for example, the intervals of the data field to be decoded or the location of the data stream within the data interval.

As the use of signal compression techniques continues to increase, the number of data streams delivered by successive frames is potentially greater, especially by providing a lower data transmission rate service that can be more robust in a mobile environment, They are scattered in the sense that frames do not carry all of the data streams. Because signaling is typically required with respect to each data stream for each frame, the signaling may represent a large overhead per frame in terms of receiver power consumption and data capacity in receiving that signaling.

Moreover, since data streams are frequency-interleaved within symbols that are typically transmitted in a data frame, it is necessary for the receiver to receive the full symbol bandwidth to receive the data stream. As a result, it is typically required that the sampling rate used at the receiver be sufficient to receive the entire symbol bandwidth, which results in a certain demand for power consumption of the receiver and also relates to the sampling rate. In particular, power consumption is an important parameter for digital broadcast receivers powered by batteries. The data streams may also be time-interleaved within the data blocks and the mapping of data blocks to data frames for transmission may be inefficient.

The present invention provides a method and apparatus for efficiently transmitting and receiving data streams in a digital broadcasting system.

A method of transmitting data including a data stream in a broadcasting system according to the present invention includes segmenting the data stream into a plurality of segments, transmitting a preamble portion carrying signaling information, Generating a frame including a plurality of frequency regions; generating a frame including a plurality of frequency regions; and generating the frame by segmenting the data portion of the frame into a plurality of frequency regions, Mapping at least one segment of the data stream to a frequency region of frequency regions of the data stream, wherein the signaling information includes first segmentation information of the data stream and second segmentation information of the plurality of frequency regions .

A method of receiving data including a data stream in a broadcasting system according to the present invention includes receiving a frame including a preamble portion carrying signaling information and a data portion segmented into a plurality of frequency regions, Wherein the data stream is segmented into a plurality of segments, wherein a segment of the data stream is mapped to a frequency region of the plurality of frequency regions, the signaling information including a first segmentation of the data stream, And second segmentation information of the plurality of frequency regions.

An apparatus according to an embodiment of the present disclosure includes: A transmission apparatus for transmitting data including a data stream in a broadcast system, the apparatus comprising: a segmentation unit for segmenting the data stream into a plurality of segments and including a preamble portion for carrying signaling information and a data portion for carrying the data stream And a transmission / reception unit for transmitting the frame according to an instruction from the control unit, wherein the control unit segments the data portion of the frame into a plurality of frequency regions when the frame is generated, And maps at least one segment of the data stream to a frequency region of a plurality of frequency regions, wherein the signaling information includes first segmentation information of the data stream and second segmentation information of the plurality of frequency regions .

In addition, in a broadcasting system according to the present invention, there is provided a receiving apparatus for receiving data including a data stream, the apparatus comprising: a signal processing unit for processing a signal received for demodulation, the received signal including a preamble portion carrying signaling information, A control unit for controlling the signal processing unit to process the signaling information and the segmented data stream, the control unit including at least one frame including a data portion segmented into frequency regions, and for demodulating the segmented data stream and the signaling information Wherein the signaling information includes first segmentation information of the data stream and second segmentation information of the plurality of frequency regions.

Further features and advantages of the present invention will become more apparent from the following description of the preferred embodiments of the invention, which is given by way of example only.

1 illustrates a data frame according to an embodiment of the present invention;
Figure 2 illustrates signaling in a data frame according to an embodiment of the present invention;
3 is a diagram illustrating a mapping of time interleaving frame segments for frequency interleaving regions according to an embodiment of the present invention;
4 illustrates a transmitter according to an embodiment of the present invention,
5 is a diagram illustrating a mapping of frequency interleaving regions to physical layer regions according to an embodiment of the present invention;
6 is a diagram illustrating an embodiment of a receiver according to an embodiment of the present invention;
7 is a diagram illustrating another embodiment of a receiver according to an embodiment of the present invention;
8 is a diagram illustrating a mapping of frequency interleaving regions to physical layer regions in Mode A according to an embodiment of the present invention;
9 is a diagram illustrating a mapping of frequency interleaving regions to physical layer regions in Mode B according to the present invention;
10 is a diagram illustrating an L1-config signaling field according to an embodiment of the present invention;
11 is a diagram illustrating an L1-dynamic signaling field according to an embodiment of the present invention;
12 is a diagram illustrating an L1-dynamic-Ext signaling field according to an embodiment of the present invention;
13 is a diagram illustrating an L1-config signaling field according to an embodiment of the present invention;
Figure 14 is a diagram illustrating another example of an L1-dynamic signaling field according to an embodiment of the present invention;
15 is a diagram illustrating another example of an L1-dynamic-Ext signaling field according to an embodiment of the present invention.
16 is a diagram illustrating in-band signaling according to an embodiment of the present invention;
17 is a diagram illustrating an L1-pre signaling field according to an embodiment of the present invention,
18 shows another example of an L1-config signaling field according to an embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that only the parts necessary for understanding the operation according to the present invention will be described and the description of the other parts will be omitted so as not to disturb the gist of the present invention. Generation Digital Video Broadcasting Next Generation Handheld (DVB-NGH) based on a terrestrial DVB-T2 system.

It should be understood, however, that the foregoing is for purposes of example only and, in other embodiments, may involve other broadcast systems, and that such embodiments are not limited to use for transmission of digital video signals.

In an embodiment of the present invention, several data streams, which may be physical layer pipes, are mapped to a super-frame of a series of frames.

1 shows a data frame according to an embodiment of the present invention.

1, the data frame includes a preamble portion and a data portion. The preamble portion includes a P1 signaling field 8, an L1-pre signaling field 10, an L1-config signaling field 12, An additional parity field such as an L1-dynamic signaling field 14, an L1-dynamic EXT signaling field 16, an Add parity AP1-APN signaling field 18a-18c, and the like. The data portion may be composed of physical layer pipes PLP1 4a, PLP2 4b, and the like. Although the physical layer pipes are shown here arranged in time sequentially, they may actually overlap in time and be multiplexed in frequency, for example.

Typically, the L1-Pre signaling field 10 includes signaling information that is at least related to the coding scheme and modulation needed to receive the remainder of the preamble. The remainder of the preamble portion includes information necessary to receive physical layer pipes in the data section, particularly within the data section. The information required to receive the physical layer pipes may include, for example, the physical layer pipe start address in the data section. The signaling information in the preamble may be referred to as out-of-band signaling.

The L1-config signaling field 12 typically conveys valid information for each frame of the super-frame and is the same for each frame of the super-frame. The L1-dynamic (14) information typically changes from frame to frame, and relates to the decoding of the physical layer pipe within that frame. The L1-dynamic signaling field 14 will include, for example, the start address of the physical layer pipe. As data compression technology advances and lower data rates and more robust services are provided for reception by portable and mobile communication equipment users, the number of physical layer pipes mapped to super-frames is increasing. However, each physical layer pipe, i. E., The data stream, may not be mapped to every frame. Conveying the signaling information, in particular the L1-dynamic signaling field 14, for each physical layer pipe in each frame may involve considerable overhead in terms of signaling information.

According to one configuration, a first signaling information field is provided to aid in the reception of a first number of data streams (in this example, the L1-dynamic signaling field 14), and if necessary, (In this example, the L1-dynamic EXT signaling field 16). The signaling information delivered to the signaling information field typically includes L1-dynamic signaling field 14 information. Wherein the number of data streams carried by the signaling information carried in the first signaling information field is less than a limit applicable to each of the frames in a super-frame, the first signaling information field comprising About the same size.

The advantage of the first signaling information field, which is the same size for each of the multiple frames, is that its size can be set to a value large enough to provide robustness due to frequency diversity. The advantage of containing information in the second information field according to the number of data streams for said given frame which is greater than a certain limit is that additional information may be transmitted beyond the capacity limit of said first signaling information field . The first information field is thus kept large enough to provide robustness due to frequency diversity, while the second information field is able to accommodate the extra capability if necessary. The second information field may be less robust than the first information field if the size of the second field is less than the first field.

The first signaling information field may convey information on whether or not a second signaling information field is to be transmitted and may also have an indication of the length of the second signaling information field. This may prevent the receiver from receiving it if the second signaling information field is not to be transmitted and prepare it to receive the second signaling information field if it is to be transmitted. This has the advantage that the receiver can inhibit reception of frames that do not have a data stream to be received, thereby saving power consumption.

The limitation on the number of data streams to which signaling information is conveyed in the first signaling information field typically includes statistical information about the number of active or idle data streams per frame for multiple frames and / Or at least the robustness of the scheme used for transmission of at least one of the first and second signaling information fields. The robustness scheme may include at least one of a modulation and coding scheme, a MIMO scheme, a Fast Fourier Transform (FFT) size, a pilot pattern, and a guard interval. Therefore, the limitation on the number of data streams carried by the information in the first signaling information field is determined in consideration of the robustness of the transmission of the field, so that the lower limit on the size of the field allows the robustness of the transmission scheme and the frequency diversity And may be set to a size sufficient to provide adequate ruggedness. The field may also be set large enough to accommodate the expected amount of signaling information associated with active and passive data streams per frame such that an overflow of the signaling information beyond the expected amount may result in And may be delivered in the second signaling information field. An indication of the limit value may be included in the preamble portion of each frame, typically in the L1-config signaling field 12.

As described above, the first signaling information field has a higher robustness than the second signaling information field due to the greater frequency diversity since the first signaling information field is typically interleaved over a larger frequency range. It may therefore be advantageous to include signaling information preferentially in the first signaling information associated with data streams requiring higher robustness.

FIG. 2 illustrates signaling in a data frame according to an embodiment of the present invention.

Referring to FIG. 2, the vertical axis represents the frequency and the horizontal axis represents the time. In the physical layer, a frame is made up of a series of Orthogonal Frequency Division Multiplexing (OFDM) symbols, each OFDM symbol having a plurality of subcarrier signals (FIZ ₀ in Fig. 1, 8 MHz in Fig. 2).

The preamble interval 2 occupies the full width at the frequency of the symbol. The remaining section of the preamble section 2 is a data section and includes a plurality of data streams to be mapped to the data section. The data section is shown in FIG. 2 as FIZ ₁ (3a), FIZ ₂ (3b) and FIZ _NFIZ Which are referred to as frequency interleaving regions indicated by the symbol 3c. The preamble portion 2 holds signaling information used for receiving the data stream in the data interval. Each frequency domain has the same position in the frequency domain for each of a plurality of frames in the super-frame.

The data streams are mapped into frequency ranges, typically one data stream is mapped into one frequency range.

A signaling information word that carries signaling related to at least the location and bandwidth of the first frequency domain in the frequency domain that helps reception of the data stream is included in the preamble portion of at least the first frame of the superframe, And is included in the L1-config signaling field 12 of each frame.

Thus, the preamble containing the signaling information word is transmitted within a wider frequency bandwidth (typically corresponding to the entire symbol bandwidth) than each frequency domain. This allows the receiver to take advantage of the reduced bandwidth, thereby reducing power consumption by reducing the sampling rate at which the data stream is received. However, by using the full symbol bandwidth to receive the preamble interval, it is possible to avoid the need to copy the information in the preamble between frequency regions, which may be necessary if the receiver wishes to use all of the bandwidths of the frequency regions.

Another advantage from reducing the transmission bandwidth and consequently increasing the transmission time period would be an increase in robustness in the mobile communication environment. It may be desirable to trade off the decrease in frequency-diversity for the gain of time diversity by trade-off time and frequency diversity by increasing the transmission time period by reducing the bandwidth.

The in-band signaling may be included in the data stream of the frame. This enables the signaling information, especially the L1-dyn signaling field 14, to be received within the bandwidth of the frequency domain, so that the receiver can maintain the second bandwidth for reception of the data stream (wider bandwidth, After initially receiving the preamble in the first frame), thereby saving power consumption.

As can be seen in Figure 1, each frequency domain is mapped to subcarriers of consecutive transmission symbols in frequency. This has the advantage that the frequency band occupied by the mapped frequency domain is minimized, leaving gaps in the frequency domain will be a waste for the receiver bandwidth.

The data is typically interleaved with frequency, and the frequency interleaving sequence may be varied according to the orthogonal frequency division modulation symbols. This can provide greater robustness. Typically, pilot tones are inserted into a transmit symbol in a pattern independent of segmenting each data interval of the plurality of frames into frequency regions. This simplifies the implementation of the transmitter and receiver since the above division can be performed independently of the configuration of the physical layer.

As a part of determining the bandwidth to be used for the frequency domain, which is typically done for a super-frame, one lower limit may be determined for the bandwidth of the frequency domain based on the composition of the pilot tones mapped to the frequency domain . In this way, the minimum robustness for transmission in the first frequency domain can be maintained, since such robustness is dependent on the configuration of the pilot tones. Any number of pilot tones will need to be present in a portion of the symbol to which the first frequency domain is mapped.

The division of the data interval of each frame can be done at the logical frame level, thereby simplifying the implementation of the transmitter and the receiver, and the location and bandwidth of the frequency regions can be flexibly allocated.

If the data stream includes elements of a scalable video coding scheme, it may be desirable to map the elements to the same frequency domain in a given frame. This allows the receiver to return to a more robust element or select a higher speed element without changing the bandwidth used by the receiver.

In addition to dividing the data section of each frame into frequency regions, say, frequency interleaving regions, the data portion may also be divided into a plurality of time regions or time interleaving frame segments. The data streams may first be mapped to time interleaving frames.

Figure 3 illustrates the mapping of time interleaving frame segments for frequency interleaving regions according to an embodiment of the present invention.

Referring to FIG. 3, the time interleaving frame 22 may then be mapped to time interleaving frame segments 24a and 24b. A second signaling information word carrying signaling regarding the position of at least one of the time interleaving frame segments within a given frame is included in the preamble period of the given frame, typically within the L1-config signaling field 12 .

If a time interleaving frame or a plurality of time interleaving frames is intended to be directly mapped to a certain frequency interleaving region, even if the amount of data carried by the time interleaving frame (s) is not the same as the capacity of the frequency interleaving region Padding will need to be included in its frequency interleaving domain. The padding is a wasted capacity if it does not carry data. In one embodiment of the present invention, as a result of the mapping of time interleaving frames to time interleaving frame segments, the need to add padding in one frequency domain can be avoided because the capacity of each time interleaving frame segment is efficient May be configured to fill the remaining portion of a frame. For example, in FIG. 3, the time interleaving frame 22 is mapped to two time interleaving frame segments: TIFS ₀ 24a and TIFS ₁ 24b. The first time interleaving frame segment (TIFS ₀ 24a) is mapped to fill the remaining capacity in the frequency interleaving region of the first frame 5a and the second time interleaving frame segment (TIFS ₁ 24b) is mapped to the second frame 5b ). That is, each frame is divided into time-frequency blocks, and time interleaving frame segments are mapped into time-frequency blocks. One time-frequency block is one block of adjacent time-frequency resources, and each time-frequency block typically has the same location in time and frequency for each of the frames.

The time interleaving frame segments 24a and 24b and the mapping of the time interleaving frames 22 to the frames 5a and 5b can be performed in real time so that flexible scheduling can be implemented . It is not necessary to determine how many frames of time interleaved frame segments per frame or how many frames 5a, 5b are mapped to the time interleaved frames. The time interleaving frame may be mapped to start and end at any point within one frame 5a and without having to fix these points in advance at any point within the super-frame.

The second signaling information word may carry information about the timing of a subsequent time interleaving frame segment so that the receiver suppresses the reception of periods between time interleaving frame segments thereby saving power consumption and the receiver And prepare to receive subsequent time interleaving frame segments.

FIG. 4 illustrates a transmitter according to an embodiment of the present invention. FIG. 4 illustrates a structure of a typical transmitter for enabling division into frequency regions and time interleaving frame segments. And FIG. 5 illustrates a mapping of frequency interleaving regions to physical layer regions according to an embodiment of the present invention.

Referring to FIG. 5, each frame may be divided into two or three or more physical layer regions 24, 26 having different physical layer characteristics. The physical characteristics are typically varied between regions to provide different levels of robustness, such that mobile portable receivers may receive, for example, more robust regions, while fixed receivers with good antennas may have higher capacity Can be received. The physical characteristics may vary between regions in the FFT size, the number and pattern of pilot tones, the MIMO scheme and the guard interval. Preferably, each of the plurality of frequency regions maps to the same frequency bandwidth for each physical layer region. This enables the receiver to use the same bandwidth to receive the frequency domain within each physical layer area of one frame.

Each time interleaved frame segment may be mapped to one physical layer area within a predetermined time.

The interleaving in the frequency interleaving region and / or in the time interleaving frame segment may be frequency-wise interleaving whereby successive portions of one data stream are transmitted over portions of the orthogonal frequency division modulation symbol Frequency, and then the above mapping typically proceeds to be mapped as frequency for portions of another orthogonal frequency division modulation symbol. Alternatively, the mapping may be time-wise interleaving, whereby successive portions of a data stream are temporally mapped over a series of orthogonal frequency division modulation symbols, and then, typically, The mapping proceeds to be temporally mapped to different frequency portions of successive orthogonal frequency division modulation symbols.

For the receiver, the sampling frequency appropriate for the second bandwidth and the bandwidth of the analog filter may be set based on the signaling information word, whereby the receiver is provided for a minimum power consumption consistent with the bandwidth of the frequency domain to be received There is a number.

6 shows an example of a receiver according to an embodiment of the present invention, and shows an example of a receiver for receiving data frames having variable bandwidth frequency ranges. FIG. 7 is a block diagram of a receiver according to an embodiment of the present invention. Which shows an alternative configuration receiver for the receiver of FIG. Referring to Fig. 7, the receiver receives a preamble, typically entirely, of a first frame of one super-frame, or an analogue suitable for the entire symbol bandwidth to receive the frequency domain for the remainder of the frames of the super- Can be used to effectively control the receiver bandwidth.

FIG. 8 illustrates a mapping of frequency interleaving regions to physical layer regions in Mode A according to an embodiment of the present invention. The time interleaving frame segments 24d, 24e, and 24e mapped to different frequency regions of consecutive frames, 24f.

FIG. 9 shows a mapping of frequency interleaving regions to physical layer regions in Mode B according to an embodiment of the present invention. When time interleaving frame segments 24d, 24e, and 24f are included in a predetermined frame 5d It can be mapped to different frame regions.

Figures 10-18 illustrate examples of signaling words that may be used in embodiments of the present invention.

FIG. 10 shows an example of an L1-config signaling field according to an embodiment of the present invention. The portion indicated by reference numeral 30 in Fig. 10 is specific to the embodiment of the present invention. The total number of physical layer pipes used in the super-frame is indicated by "MUM_PLP ", and the number of frames of the super-frame relative to the number of physical layer pipes to which the signaling information is carried in the first signaling information field Quot; is conveyed by "NUM_PLP_IN_L1DYN ".

11 shows an example of an L1-dynamic signaling field (first signaling information field) according to an embodiment of the present invention.

Referring to Fig. 11, the portions denoted by reference numerals 32 and 34 are specific to the embodiment of the present invention. The portion indicated by reference numeral 32 relates to information about the physical layer pipes, which is carried in the L1 dynamic signaling information field rather than the L1 dynamic-EXT signaling information field. The portion indicated by reference numeral 34 is "NUM_PLP_ext ", which indicates the number of physical layer pipes to which the signaling information is communicated in the L1 dynamic-EXT signaling field and" NUM_IDLE_PLP " 0.0 > physical-layer < / RTI >

12 shows an example of an L1 dynamic_EXT signaling field (second signaling information field) according to an embodiment of the present invention.

Referring to Figure 12, the portion designated by reference numeral 36 is specific to embodiments of the present invention. The portion indicated by reference numeral 36 conveys signaling information about the physical layer pipes that were not included in the L1-dynamic signaling field and about the physical layer pipes in the idle state.

FIG. 13 shows another example of the "L1 config" information in the embodiment of the present invention that includes signaling for time interleaved frame segments, showing an L1-config signaling field according to an embodiment of the present invention. . The portions indicated by reference numerals 38, 40 and 42 in Fig. 13 are specific to the embodiments of the present invention.

FIG. 14 shows another example of the L1-dynamic signaling field according to the embodiment of the present invention. The L1-dynamic signaling field in the embodiment of the present invention, which includes signaling on time interleaving frame segments 1 < / RTI > signaling information field). The portions indicated by reference numerals 44 and 46 42 in Fig. 14 are specific to the embodiments of the present invention.

15 shows another example of an L1-dynamic-Ext signaling field according to an embodiment of the present invention. The L1-config-ext signaling field in the embodiment of the present invention, which includes signaling on time interleaving frame segments, (Referred to as the second signaling information field). The portion indicated by reference numeral 48 in Fig. 15 is specific to the embodiments of the present invention.

16 illustrates an example of an in-band signaling word in an embodiment of the present invention including signaling for time interleaved frame segments illustrating in-band signaling according to an embodiment of the present invention. The portion indicated by reference numeral 50 in FIG. 16 is specific to embodiments of the present invention.

17 shows an example of an L1-pre signaling field in an embodiment of the present invention including signaling on physical layer regions, showing an L1-pre signaling field according to an embodiment of the present invention. The portions indicated by reference numeral 52 in FIG. 17 are specific to the embodiments of the present invention.

18 shows another example of the L1-config signaling field according to an embodiment of the present invention. In another example of the L1-config signaling field in the embodiment of the present invention including the signaling on the physical layer areas Respectively. The portions indicated by reference numerals 60, 54, 56 and 58 in Fig. 18 are specific to the embodiments of the present invention. While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

Claims (32)

A method for transmitting data including a data stream in a broadcasting system,
Segmenting the data stream into a plurality of segments;
Generating a frame including a preamble portion carrying signaling information and a data portion carrying the data stream,
And transmitting the frame,
The generating of the frame includes:
Segmenting the data portion of the frame into a plurality of frequency regions;
And mapping at least one segment of the data stream to a frequency domain of the plurality of frequency regions,
Wherein the signaling information includes first segmentation information of the data stream and second segmentation information of the plurality of frequency regions.
2. The method of claim 1 wherein the preamble portion is transmitted within a first frequency bandwidth and a segment of the data stream is transmitted within the frequency region having a second frequency bandwidth,
Wherein the first frequency bandwidth is wider than the second frequency bandwidth.
2. The method of claim 1, wherein the first segmentation information includes start position information and length information of each segment of the data stream.
2. The method of claim 1, wherein the second segmentation information includes the number of frequency regions and size information of each frequency region.
2. The method of claim 1, further comprising inserting pilot tones in a frame in an independent pattern of the segmentations.
The method of claim 1, further comprising mapping components carried in the frame to the same frequency domain.
2. The apparatus of claim 1, wherein the preamble portion includes a L1-config portion, a L1-dynamic portion and an L1-dynamic extension portion,
Wherein the L1-config portion includes the same signaling information for each frame of the superframe, the L1-dynamic portion includes signaling information for receipt of a plurality of first data streams, And signaling information for receipt of additional data streams after the plurality of first data streams.
8. The method of claim 7, wherein the signaling information in the L1-dynamic portion and the L1-dynamic EXT portion includes start position information and length information of each segment of the data stream.
A method of receiving data in a broadcast system, the method comprising:
Receiving a frame including a preamble portion carrying signaling information and a data portion segmented into a plurality of frequency regions,
And demodulating the frame,
Wherein the data stream is segmented into a plurality of segments, a segment of the data stream is mapped to a frequency region of the plurality of frequency regions,
Wherein the signaling information includes first segmentation information of the data stream and second segmentation information of the plurality of frequency regions.
10. The apparatus of claim 9, wherein the preamble portion is received within a first frequency bandwidth and the segment of the data stream is received within the frequency region having a second frequency bandwidth,
Wherein the first frequency bandwidth is wider than the second frequency bandwidth.
10. The method of claim 9, wherein the first segmentation information includes start position information and length information of each segment of the data stream.
10. The method of claim 9, wherein the second segmentation information includes the number information of the frequency regions and size information of each frequency region.
10. The method of claim 9, wherein the frame has pilot tones in an independent pattern of the segmentations.
10. The method of claim 9, further comprising mapping components carried in the frame to the same frequency domain,
Wherein the data stream comprises components of a scalable video coding scheme.
10. The apparatus of claim 9, wherein the preamble portion includes a L1-config portion, a L1-dynamic portion, and an L1-dynamic extension portion,
Wherein the L1-config portion includes the same signaling information for each frame of the superframe, the L1-dynamic portion includes signaling information for receipt of a plurality of first data streams, And signaling information for receipt of additional data streams after the plurality of first data streams.
16. The method of claim 15, wherein the signaling information in the L1-dynamic portion and the L1-dynamic EXT portion includes start position information and length information of each segment of the data stream.
A transmitting apparatus for transmitting data including a data stream in a broadcasting system,
A control section for segmenting the data stream into a plurality of segments and generating a frame including a preamble portion carrying signaling information and a data portion carrying the data stream,
And a transmission / reception unit for transmitting the frame according to an instruction from the control unit,
Wherein the control unit is configured to segment the data portion of the frame into a plurality of frequency regions upon the generation of the frame and map at least one segment of the data stream to a frequency region of the plurality of frequency regions,
Wherein the signaling information includes first segmentation information of the data stream and second segmentation information of the plurality of frequency regions.
18. The method of claim 17, wherein the signaling information is transmitted within a first frequency bandwidth, and wherein a segment of the data stream is transmitted within the frequency domain having a second frequency bandwidth,
Wherein the first frequency bandwidth is wider than the second frequency bandwidth.
18. The apparatus of claim 17, wherein the first segmentation information includes start position information and length information of each segment of the data stream.
18. The apparatus of claim 17, wherein the second segmentation information includes the number information of the frequency regions and size information of each frequency region.
18. The apparatus of claim 17, wherein the preamble portion includes a L1-config portion, a L1-dynamic portion, and an L1-dynamic extension portion,
Wherein the L1-config portion includes the same signaling information for each frame of the superframe, the L1-dynamic portion includes signaling information for receipt of a plurality of first data streams, And signaling information for receipt of additional data streams after the first plurality of data streams.
22. The apparatus of claim 21, wherein the signaling information in the L1-dynamic portion and the L1-dynamic EXT portion includes start position information and length information of each segment of the data stream.
A receiving apparatus for receiving data including a data stream in a broadcasting system,
A transmission / reception unit for receiving a frame including a preamble portion carrying signaling information and a data portion segmented into a plurality of frequency regions,
A demodulator for demodulating the frame,
And a control unit for controlling the transmission / reception unit and the demodulation unit,
Wherein the data stream is segmented into a plurality of segments, a segment of the data stream is mapped to a frequency region of the plurality of frequency regions,
Wherein the signaling information includes first segmentation information of the data stream and second segmentation information of the plurality of frequency regions.
24. The method of claim 23, wherein the signaling information is received within a first frequency bandwidth, and wherein the segment of the data stream is received within the frequency domain having a second frequency bandwidth,
Wherein the first frequency bandwidth is wider than the second frequency bandwidth.
24. The apparatus of claim 23, wherein the first segmentation information includes start position information and length information of each segment of the data stream.
24. The apparatus of claim 23, wherein the second segmentation information includes the number information of the frequency regions and size information of each frequency region.
24. The apparatus of claim 23, wherein the preamble portion comprises a layer-1 configuration (L1-config) portion, a layer-1 dynamic portion and an L1-dynamic extension (EXT)
Wherein the L1-config portion includes the same signaling information for each frame of the superframe, the L1-dynamic portion includes signaling information for receipt of a plurality of first data streams, And signaling information for receipt of additional data streams after the first plurality of data streams.
28. The apparatus of claim 27, wherein the signaling information in the L1-dynamic portion and the L1-dynamic EXT portion includes start position information and length information of each segment of the data stream. 18. The apparatus of claim 17, wherein pilot tones are inserted into the frame in an independent pattern of the segmentations.
18. The apparatus of claim 17, wherein the components carried in the frame are mapped to the same frequency domain.
24. The apparatus of claim 23, wherein pilot tones are inserted into the frame in an independent pattern of the segmentations.
24. The apparatus of claim 23, wherein the components carried in the frame are mapped to the same frequency domain.

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