Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal

Abstract

The present invention relates to method of transmitting and receiving signals and a corresponding apparatus. One aspect of the present invention relates to a method of receiving a signal, which includes an L1 signaling region where the L1 signaling has an adaptive L1 block structure for increased spectrum efficiency in a channel bonding environment.

1 . A method of transmitting at least one broadcasting signal frame having PLP(Physical Layer Pipe) data and preamble data, the method comprising:
 mapping bits of the PLP data into PLP data symbols and bits of the preamble data into preamble data symbols;   building at least one data slice based on the PLP data symbols;   building a signal frame based on the preamble data symbols and the data slices, the preamble data symbols having L1 signaling information for signaling the data slices,   modulating the signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method; and   transmitting the modulated signal frame,   wherein the L1 signaling information has data slice ID information that identifies the data slice.   
     
     
         2 . The method according to  claim 1 , wherein the length of the data slice ID information is 8 bits. 
     
     
         3 . The method according to  claim 1 , wherein the L1 signaling information further have PLP PAYLOAD TYPE information which indicates the type of payload data carried by the PLP. 
     
     
         4 . The method according to  claim 1 , further comprising;
 LDPC encoding the preamble data by a shortened and punctured LDPC scheme.   
     
     
         5 . A method of receiving broadcasting signal, comprising;
 demodulating the received signal by use of an Orthogonal Frequency Division Multiplexing(OFDM) method;   obtaining a signal frame from the demodulated signals, the signal frame comprising preamble symbols and PLP(Physical Layer Pipe) data symbols, the preamble symbols having L1 signaling information, the L1 signaling information having data slice ID information that identifies the data slice, the data slice being identical with a group of data symbols;   demapping into bits for the preamble symbols and bits for the PLP data symbols; and   decoding the bits for the preamble symbols by a shortened and punctured LDPC(low density parity check) decoding scheme.   
     
     
         6 . The method according to  claim 5 , wherein the length of the data slice ID information is 8 bits. 
     
     
         7 . The method according to  claim 5 , wherein the L1 signaling information further have PLP PAYLOAD TYPE information which indicates the type of payload data carried by the PLP. 
     
     
         8 . A transmitter of transmitting at least one broadcasting signal frame having PLP(Physical Layer Pipe) data and preamble data, comprising:
 a mapper configured to map bits of the PLP data into PLP data symbols and bits of the preamble data into preamble data symbols;   a data slice builder configured to build at least one data slice based on the PLP data symbols;   a frame builder configured to build a signal frame based on the preamble data symbols and the data slices, the preamble data symbols having L1 signaling information for signaling the data slices, the L1 signaling information having data slice ID information that identifies the data slice,   a modulator configured to modulate the signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method; and   a transmission unit configured to transmit the modulated signal frame.   
     
     
         9 . The transmitter of  claim 8 , wherein the length of the data slice ID information is 8 bits. 
     
     
         10 . The transmitter of  claim 8 , wherein the L1 signaling information further have PLP PAYLOAD TYPE information which indicates the type of payload data carried by the PLP. 
     
     
         11 . The transmitter of  claim 8 , further comprising;
 an LDPC encoder configured to encode the preamble data by a shortened and punctured LDPC scheme.   
     
     
         12 . A receiver of receiving broadcasting signal, comprising;
 a demodulator configured to demodulate the received signal by use of an Orthogonal Frequency Division Multiplexing(OFDM) method;   a frame Parser configured to obtain a signal frame from the demodulated signals, the signal frame comprising preamble symbols and PLP(Physical Layer Pipe) data symbols, the preamble symbols having L1 signaling information, the L1 signaling information having data slice ID information that identifies the data slice, the data slice being identical with a group of data symbols;   a demapper configured to demap the preamble symbols into preamble bits and PLP data symbols into PLP data bits; and   a decoder configured to decode the preamble bits by a shortened and a punctured LDPC(low density parity check) decoding scheme.   
     
     
         13 . The receiver of  claim 12 , wherein the length of the data slice ID information is 8 bits. 
     
     
         14 . The receiver of  claim 12 , wherein the L1 signaling information further have PLP PAYLOAD TYPE information which indicates the type of payload data carried by the PLP.