Patent ID: 8750398

Claim:
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.