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

1. A method of transmitting a broadcasting signal in a transmitter, the method comprising:

mapping preamble data bits into preamble data symbols;

mapping Physical Layer Pipe (PLP) data bits into PLP data symbols;

building at least one data slice based on the PLP data symbols, the at least one data slice carrying one or more PLPs;

time-interleaving the PLP data symbols at a level of the at least one data slice;

building a signal frame based on the preamble data symbols and the time-interleaved PLP data symbols;

modulating the built signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method; and

transmitting the broadcasting signal including data of the modulated signal frame,

wherein an L1 block is repeated in the preamble data symbols in a frequency direction by a same bandwidth, the L1 block including L1 signaling information for signaling the at least one data slice,

wherein the L1 signaling information includes data slice ID information that identifies the at least one data slice, and

wherein subcarriers carrying parts of the L1 block are re-ordered by a receiver when a tuning window of the receiver contains parts of a different L1 block.

2. The method according to claim 1 , wherein a length of the data slice ID information is 8 bits.

3. The method according to claim 1 , wherein the same bandwidth is 7.61 MHz.

4. The method according to claim 1 , wherein the L1 signaling information further includes PLP PAYLOAD TYPE information that indicates a type of payload data carried by each PLP.

5. A method of receiving a broadcasting signal in a receiver, the method comprising;

demodulating the received broadcasting signal by an Orthogonal Frequency Division Multiplexing (OFDM) method;

obtaining a signal frame from the demodulated broadcasting signal, the signal frame comprising preamble data symbols and at least one data slice, the at least one data slice including Physical Layer Pipe (PLP) data symbols of one or more PLPs;

time-deinterleaving the PLP data symbols at a level of the at least one data slice;

demapping the time-deinterleaved PLP data symbols into PLP data bits; and

decoding the PLP data bits by an LDPC (low density parity check) decoding scheme,

wherein an L1 block is repeated in the preamble data symbols in a frequency direction by a same bandwidth, the L1 block including L1 signaling information for signaling the at least one data slice,

wherein the L1 signaling information includes data slice ID information that identifies the at least one data slice, and

wherein subcarriers carrying parts of the L1 block are re-ordered when a tuning window of the receiver contains parts of a different L1 block.

6. The method according to claim 5 , wherein a length of the data slice ID information is 8 bits.

7. The method according to claim 5 , wherein the same bandwidth is 7.61 MHz.

8. The method according to claim 5 , wherein the L1 signaling information further includes PLP PAYLOAD TYPE information that indicates a type of payload data carried by each PLP.

9. A transmitter for transmitting a broadcasting signal, the transmitter comprising:

a mapper configured to map preamble data bits into preamble data symbols and Physical Layer Pipe (PLP) data bits into PLP data symbols;

a data slice builder configured to build at least one data slice based on the PLP data symbols, the at least one data slice carrying one or multiple PLPs;

a time-interleaver configured to time-interleave the PLP data symbols at a level of the at least one data slice;

a frame builder configured to build a signal frame based on the preamble data symbols and the time-interleaved PLP data symbols;

a modulator configured to modulate the built signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method; and

a transmission unit configured to transmit the broadcasting signal including data of the modulated signal frame,

wherein an L1 block is repeated in the preamble data symbols in a frequency direction by a same bandwidth, the L1 block including L1 signaling information for signaling the at least one data slice,

wherein the L1 signaling information includes data slice ID information that identifies the at least one data slice, and

wherein subcarriers carrying parts of the L1 block are re-ordered by a receiver when a tuning window of the receiver contains parts of a different L1 block.

10. The transmitter according to claim 9 , wherein a length of the data slice ID information is 8 bits.

11. The transmitter according to claim 9 , wherein the same bandwidth is 7.61 MHz.

12. The transmitter according to claim 9 , wherein the L1 signaling information further includes PLP PAYLOAD TYPE information that indicates a type of payload data carried by each PLP.

13. A receiver for receiving a broadcasting signal, the receiver comprising;

a demodulator configured to demodulate the received broadcasting signal by use of an Orthogonal Frequency Division Multiplexing (OFDM) method;

a frame parser configured to obtain a signal frame from the demodulated broadcasting signal, the signal frame comprising preamble data symbols and at least one data slice, the at least one data slice including Physical Layer Pipe (PLP) data symbols of one or multiple PLPs;

a time-deinterleaver configured to time-deinterleave the PLP data symbols at a level of the at least one data slice;

a demapper configured to demap the time-deinterleaved PLP data symbols into PLP data bits; and

a decoder configured to decode the PLP data bits by an LDPC (Low Density Parity Check) decoding scheme,

wherein an L1 block is repeated in the preamble data symbols in a frequency direction by a same bandwidth, the L1 block including L1 signaling information for signaling the at least one data slice,

wherein the L1 signaling information includes data slice ID information that identifies the at least one data slice, and

wherein subcarriers carrying parts of the L1 block are re-ordered when a tuning window of the receiver contains parts of a different L1 block.

14. The receiver according to claim 13 , wherein a length of the data slice ID information is 8 bits.

15. The receiver according to claim 13 , wherein the same bandwidth is 7.61 MHz.

16. The receiver according to claim 13 , wherein the L1 signaling information further includes PLP PAYLOAD TYPE information that indicates a type of payload data carried by each PLP.