Method and apparatus for transmitting and receiving broadcast signal

A method for transmitting a broadcast signal, comprising:

• an input formatting step configured to de-multiplex an input stream into at least one Data Pipe (DP);
• a BICM processing step configured to perform error correction processing on data of the at least one DP;
• a frame building step configured to generate a signal frame including the data of the DP;
• an OFDM generation step configured to generate a transmission broadcast signal by inserting a preamble into the signal frame and performing OFDM modulation;
• and
• a signaling generation step configured to generate Physical Layer Signaling (PLS) information,
• wherein the input formatting step further comprises
• a header compression step configured to compress headers of packets included in the input stream;
• a Baseband (BB) frame forming step configured to allocate data of the packets to a BB frame, and
• a BB frame header insertion step configured to insert a BB frame header into the BB frame.

An apparatus for receiving a broadcast signal, comprising:

• a synchronization/demodulation module configured to perform signal detection and OFDM demodulation for a received broadcast signal;
• a frame parsing module configured to extract service data by parsing a signal frame of the received broadcast signal;
• a demapping/decoding module configured to transform an input signal to a bit domain and perform deinterleaving;
• an output processing module configured to receive the service data and to output a data stream;
• and
• a signaling decoding module configured to acquire signaling information by parsing Physical Layer Signaling (PLS) information,
• wherein the output processing module further comprises
• a BB frame header parser module configured to parse a BB frame header;
• a header de-compression module configured to de-compress headers of at least one packet included in the BB frame;
• and
• a packet recombining module configured to an output data stream by combining the packets.

A method for receiving a broadcast signal, comprising:

• a synchronization/demodulation step configured to perform signal detection and OFDM demodulation for a received broadcast signal;
• a frame parsing step configured to extract service data by parsing a signal frame of the received broadcast signal;
• a demapping/decoding step configured to transform an input signal to a bit domain and perform deinterleaving;
• an output processing step configured to receive the service data and to output a data stream;
• and
• a signaling decoding step configured to acquire signaling information by parsing Physical Layer Signaling (PLS) information,
• wherein the output processing step further comprises
• a BB frame header parser step configured to parse a BB frame header;
• a header de-compression step configured to de-compress headers of at least one packet included in the BB frame;
• and
• a packet recombining step configured to an output data stream by combining the packets.