DIGITAL BROADCASTING SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING DIGITAL BROADCAST SIGNAL

• US 20110200136A1
• Filed: 02/11/2011
• Published: 08/18/2011
• Est. Priority Date: 02/11/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Byoung Gill, Lee, Hyoung Gon, SONG, Won Gyu, Choi, In Hwan, Song, Jae Hyung, Mun, Chul Kyu, Kim, Jin Woo
• Granted Patent: US 8,495,477 B2
• Time in Patent Office: Days
• US Class Current: 375/295
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 27/02 Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation H04L27/32 takes precedence

Abstract

The disclosed method of processing a digital broadcast signal comprises encoding signaling data for signaling of mobile service data, forming data groups, wherein the data groups include a first data group, a second data group and a third data group, and transmitting the digital broadcast signal including the data groups, wherein the signaling data includes first information indicating whether a segmented known data sequence of the second data group is concatenated to a segmented known data sequence of the first data group to form a known data sequence, and/or second information indicating whether a segmented known data sequence of the second data group is concatenated to a segmented known data sequence of the third data group to form a known data sequence.

Claims

1. A method of processing a digital broadcast signal, the method comprising:

encoding signaling data for signaling of mobile service data;

forming data groups, wherein the forming data groups comprises mapping the mobile service data into corresponding location of the data groups, adding known data sequences and at least one of segmented known data sequences to the data groups, and adding the signaling data between a (K)th known data sequence and (K+1)th known data sequence of the known data sequences, wherein the data groups include a first data group, a second data group and a third data group;

transmitting the digital broadcast signal including the data groups, wherein the first data group is a preceding adjacent data group to the second data group and the third data group is a succeeding adjacent data group to the second data group in time order in the digital broadcast signal; and

wherein the signaling data includes first information indicating whether a segmented known data sequence of the second data group is concatenated to a segmented known data sequence of the first data group to form a known data sequence, and/or second information indicating whether a segmented known data sequence of the second data group is concatenated to a segmented known data sequence of the third data group to form a known data sequence.

2. The method of claim 1, wherein the signaling data comprises first signaling data to signal transmission parameters for the mobile service data and second signaling data which is cross layer information between a physical layer and upper layers.

3. The method of claim 2, wherein the encoding signaling data comprises:

Reed-Solomon (RS) encoding the first signaling data at a first RS code rate;

Reed-Solomon (RS) encoding the second signaling data at a second RS code rate;

interleaving the RS-encoded second signal data;

combining the interleaved second data and the RS-encoded first signal data; and

encoding the combined signal data in accordance with parallel concatenated convolutional code (PCCC) encoding.

4. The method of claim 2, wherein the first and second information are included in the first signaling data.

5. An apparatus for processing a digital broadcast signal, the apparatus comprising:

a signaling encoder configured to encode signaling data for signaling of mobile service data;

a group formatter configured to form data groups, wherein the forming data groups comprises mapping the mobile service data into corresponding location of the data groups, adding known data sequences and at least one of segmented known data sequences to the data groups, and adding the signaling data between a (K)th known data sequence and (K+1)th known data sequence of the known data sequences, wherein the data groups include a first data group, a second data group and a third data group;

a transmission unit configured to transmit the digital broadcast signal including the data groups, wherein the first data group is a preceding adjacent data group to the second data group and the third data group is a succeeding adjacent data group to the second data group in time order in the digital broadcast signal; and

wherein the signaling data includes first information indicating whether a segmented known data sequence of the second data group is concatenated to a segmented known data sequence of the first data group to form a known data sequence, and/or second information indicating whether a segmented known data sequence of the second data group is concatenated to a segmented known data sequence of the third data group to form a known data sequence.

6. The apparatus of claim 5, wherein the signaling data comprises first signaling data to signal transmission parameters for the mobile service data and second signaling data which is cross layer information between a physical layer and upper layers.

7. The apparatus of claim 6, wherein the signaling encoder comprises:

a first Reed-Solomon (RS) encoder configured to RS encode the first signaling data at a first RS code rate;

a second Reed-Solomon (RS) encoder configured to RS encode the second signaling data at a second RS code rate;

an interleaver configured to interleave the RS-encoded second signal data;

a multiplexer configured to combine the interleaved second data and the RS-encoded first signal data; and

a PCCC encoder configured to encode the combined signal data in accordance with parallel concatenated convolutional code (PCCC) encoding.

8. The apparatus of claim 6, wherein the first and second information are included in the first signaling data.