DIGITAL BROADCASTING SYSTEM AND DATA PROCESSING METHOD
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Abstract
A digital broadcasting system and a method of processing data are disclosed, which are robust to error when mobile service data are transmitted. To this end, additional encoding is performed for the mobile service data, whereby it is possible to strongly cope with fast channel change while giving robustness to the mobile service data.
30 Citations
29 Claims
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1-15. -15. (canceled)
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16. A method of transmitting a broadcast signal in a transmitter, the method comprising:
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encoding a 2-dimensional Reed-Solomon (RS) frame through which an ensemble including a service of mobile data is RS cyclic redundancy check (RS-CRC) encoded according to an RS frame mode, wherein the encoded RS frame is separated to a plurality of frame portions; dividing one of the frame portions into serial concatenated convolutional coding (SCCC) blocks according to an SCCC block mode, performing outer encoding of SCCC on data in the SCCC blocks according to an SCCC code mode, and outputting data blocks including the outer-encoded data; forming a data group including signaling information, known data sequences and the data blocks, wherein the signaling information includes first channel data having cross layer information between a physical layer and an upper layer and second channel data indicating a version of the first channel data; interleaving data in the data group, wherein the interleaved data group includes a plurality of regions to which the data blocks are mapped according to the SCCC block mode, wherein the SCCC block mode identifies a relationship between the regions and the data blocks; trellis encoding the interleaved data in a trellis encoder; and transmitting a transmission frame including the trellis-encoded data, wherein the transmission frame includes a plurality of sub-frames, and the second channel data includes information indicating a current sub-frame number within the transmission frame. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method of receiving a broadcast signal in a receiver, the method comprising:
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receiving a broadcast signal including a transmission frame, wherein the transmission frame includes a plurality of sub-frames, wherein a parade of data groups in the broadcast signal is received during slots within the transmission frame, wherein each data group includes signaling information, known data sequences and data blocks of mobile data, the data group including a plurality of regions to which the data blocks are mapped according to a serial concatenated convolutional coding (SCCC) block mode, wherein the SCCC block mode identifies a relationship between the regions and the data blocks; demodulating the broadcast signal and obtaining, from the signaling information, first channel data having cross layer information between a physical layer and an upper layer and second channel data indicating a version of the first channel data, wherein the second channel data includes information indicating a current sub-frame number within the transmission frame; building a Reed-Solomon (RS) frame corresponding to an ensemble of a service of the mobile data using the data groups; and performing error detection on the RS frame, and performing error correction decoding on data in the RS frame according to an RS code mode. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification