# US 10,320,426 B2 · Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal

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- Number: US 10,320,426 B2
- Document ID: US10320426B2
- Status: Granted
- Kind: B2
- Application number: 15/250,257
- Filed: 2016-08-29
- Published: 2016-12-15
- Granted: 2019-06-11
- Earliest claimed: 2009-02-12
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Woo Suk Ko; Sang Chul Moon
- Web page: https://patentgrep.com/patent/US10320426B2

## CPC

- H04L 27/2602: {Signal structure}
- H03M 13/1102: {Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes}
- H03M 13/1105: {Decoding}
- H03M 13/152: {Bose-Chaudhuri-Hocquenghem [BCH] codes}
- H03M 13/2792: {Interleaver wherein interleaving is performed jointly with another technique such as puncturing, multiplexing or routing}
- H03M 13/29: combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
- H03M 13/2906: {using block codes (H03M13/2957 takes precedence)}
- H04L 1/0041: {Arrangements at the transmitter end}
- H04L 1/0057: {Block codes (H04L1/0061, H04L1/0064 take precedence)}
- H04L 1/0071: {Use of interleaving (interleaving per se H03M13/27)}
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 27/02: Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation (H04L27/32 takes precedence)
- H04L 27/34: Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- G11B 20/1833: {by adding special lists or symbols to the coded information (G11B20/1806, G11B20/1866 take precedence)}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H03M: CODING; DECODING; CODE CONVERSION IN GENERAL (using fluidic means F15C4/00; optical analogue/digital converters G02F7/00; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. G01D, G01R, G06F, G06T, G09G, G10L, G11B, G11C, H04B, H04L, H04M, H04N; ciphering or deciphering for cryptography or other purposes involving the need for secrecy G09C)
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

The present invention relates to a method of transmitting and a method of receiving signals and corresponding apparatus. One aspect of the present invention relates to an efficient L1 signaling method for an efficient transmitter and an efficient receiver using the efficient L1 signaling method for an efficient cable broadcasting.

## Claims

### Claim 1

An apparatus for transmitting broadcast signals to a receiver, the apparatus comprising:
a Bose, Chaudhri, Hocquenghem (BCH) encoder to BCH encode Layer 1 signaling data for signaling service data;
a zero inserter to pad the BCH encoded Layer 1 signaling data with at least one zero bit;
a first Low-Density Parity-Check (LDPC) encoder to LDPC encode the zero padded Layer 1 signaling data;
a zero remover to remove the at least one zero bit from the LDPC encoded Layer 1 signaling data;
a first interleaver to interleave the LDPC encoded Layer 1 signaling data from which the at least one zero bit is removed;
a first Quadrature Amplitude Modulation (QAM) mapper to map the interleaved Layer 1 signaling data into constellations;
a second LDPC encoder to LDPC encode the service data;
a second interleaver to interleave the LDPC encoded service data;
a second QAM mapper to map the interleaved service data into constellations;
a time interleaver to time interleave the mapped service data;
a frame builder to build a signal frame including the mapped Layer 1 signaling data and the time-interleaved service data; and
a transmitter to transmit the broadcast signals including the signal frame through Radio Frequencies (RFs), wherein the Layer 1 signaling data include channel bonding information for the broadcast signals and wherein the channel bonding information includes information for identifying a number of RFs involved in channel bonding.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the signal frame includes at least one preamble symbol having the Layer 1 signaling data and wherein a number of the preamble symbol is variable.

### Claim 3 (depends on 2)

The apparatus of claim 2, wherein the service data are included in a part of a last preamble symbol and data symbols following the last preamble symbol.

### Claim 4

A method for transmitting broadcast signals to a receiver, the method comprising:
Bose, Chaudhri, Hocquenghem (BCH) encoding, by a BCH encoder, Layer 1 signaling data for signaling service data;
padding, by a zero inserter, the BCH encoded Layer 1 signaling data with at least one zero bit;
Low-Density Parity-Check (LDPC) encoding, by a first LDPC encoder, the zero padded Layer 1 signaling data;
removing, by a zero remover, the at least one zero bit from the LDPC encoded Layer 1 signaling data;
interleaving, by a first interleaver, the LDPC encoded Layer 1 signaling data from which the at least one zero bit is removed;
Quadrature Amplitude Modulation (QAM) mapping, by a first QAM mapper, the interleaved Layer 1 signaling data into constellations;
LDPC encoding, by a second LDPC encoder, the service data;
interleaving, by a second interleaver, the LDPC encoded service data;
mapping, by a second QAM mapper, the interleaved service data into constellations;
time interleaving, by a time interleaver, the mapped service data;
building, by a frame builder, a signal frame including the mapped Layer 1 signaling data and the time-interleaved service data; and
transmitting, by a transmitter, the broadcast signals including the signal frame through Radio Frequencies (RFs), wherein the Layer 1 signaling data include channel bonding information for the broadcast signals and wherein the channel bonding information includes information for identifying a number of RFs involved in channel bonding.

### Claim 5 (depends on 4)

The method of claim 4, wherein the signal frame includes at least one preamble symbol having the Layer 1 signaling data and wherein a number of the preamble symbol is variable.

### Claim 6 (depends on 5)

The method of claim 5, wherein the service data are included in a part of a last preamble symbol and data symbols following the last preamble symbol.

### Claim 7

An apparatus for receiving broadcast signals from a transmitter, the apparatus comprising:
a tuner to receive the broadcast signals through Radio Frequencies (RFs), wherein the broadcast signals include a signal frame including service data and Layer 1 signaling data for signaling the service data, wherein the Layer 1 signaling data include channel bonding information for the broadcast signals, and wherein the channel bonding information includes information for identifying a number of RFs involved in channel bonding;
a frame parser to acquire the signal frame from the received broadcast signals;
a first Quadrature Amplitude Modulation (QAM) demapper to demap the Layer 1 signaling data in the signal frame;
a first deinterleaver to deinterleave the demapped Layer 1 signaling data;
a zero inserter to pad the deinterleaved Layer 1 signaling data with at least one zero bit;
a first Low-Density Parity-Check (LDPC) decoder to LDPC decode the zero padded Layer 1 signaling data;
a zero remover to remove the at least one zero bit from the LDPC decoded Layer 1 signaling data;
a Bose, Chaudhri, Hocquenghem (BCH) decoder to BCH decode the LDPC decoded Layer 1 signaling data from which the at least one zero bit is removed;
a time deinterleaver to time deinterleave the service data in the signal frame;
a second QAM demapper to demap the time-deinterleaved service data;
a second deinterleaver to deinterleave the demapped service data; and
a second LDPC decoder to LDPC decode the deinterleaved service data.

### Claim 8 (depends on 7)

The apparatus of claim 7, wherein the signal frame includes at least one preamble symbol having the Layer 1 signaling data and wherein a number of the preamble symbol is variable.

### Claim 9 (depends on 8)

The apparatus of claim 8, wherein the service data are included in a part of a last preamble symbol and data symbols following the last preamble symbol.

### Claim 10

A method of receiving broadcast signals from a transmitter, the method comprising:
receiving, by a tuner, the broadcast signals through Radio Frequencies (RFs), wherein the broadcast signals include a signal frame including service data and Layer 1 signaling data for signaling the service data, wherein the Layer 1 signaling data include channel bonding information for the broadcast signals, and wherein the channel bonding information includes information for identifying a number of RFs involved in channel bonding;
acquiring, by a frame parser, the signal frame from the received broadcast signals;
demapping, by a first Quadrature Amplitude Modulation (QAM) demapper, the Layer 1 signaling data in the signal frame;
deinterleaving, by a first deinterleaver, the demapped Layer 1 signaling data;
padding, by a zero inserter, the deinterleaved Layer 1 signaling data with at least one zero bit;
Low-Density Parity-Check (LDPC) decoding, by a first LDPC decoder, the zero padded Layer 1 signaling data;
removing, by a zero remover, the at least one zero bit from the LDPC decoded Layer 1 signaling data;
Bose, Chaudhri, Hocquenghem (BCH) decoding, by a BCH decoder, the LDPC decoded Layer 1 signaling data from which the at least one zero bit is removed;
time deinterleaving, by a time deinterleaver, the service data in the signal frame;
demapping, by a second QAM demapper, the time-deinterleaved service data;
deinterleaving, by a second deinterleaver, the demapped service data; and
LDPC decoding, by a second LDPC decoder, the deinterleaved service data.

### Claim 11 (depends on 10)

The method of claim 10, wherein the signal frame includes at least one preamble symbol having the Layer 1 signaling data and wherein a number of the preamble symbol is variable.

### Claim 12 (depends on 11)

The method of claim 11, wherein the service data are included in a part of a last preamble symbol and data symbols following the last preamble symbol.