Digital broadcasting system and method of processing data in digital broadcasting system

A broadcast receiver comprising:

• a tuner for receiving a broadcast signal, the broadcast signal comprising mobile service data, a signaling information table including Internet protocol (IP) access information of the mobile service data, known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes information for rapid mobile service acquisition, and wherein the TPC data includes FIC version information for indicating an update of the FIC data;
• a demodulator for demodulating the received broadcast signal;
• and
• a handler for obtaining the signaling information table from the demodulated broadcast signal and obtaining an IP datagram of the mobile service data using the signaling information table,
• wherein the FIC data further includes version information of a channel delivering the signaling information table, wherein the mobile service data is packaged into at least one of a plurality of RS frames belonging to an ensemble, the ensemble including the signaling information table.

A method of processing broadcast data in a broadcast transmitter, the method comprising:

• performing, by a Reed Solomon (RS) encoder, RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data to generate at least one of a plurality of RS frames belonging to an ensemble, the ensemble including a signaling information table which comprises Internet protocol (IP) access information of the mobile service data;
• mapping the at least one of the plurality of RS frames into a plurality of groups, wherein each group includes a portion of data included in a corresponding RS frame, known data sequences, a portion of fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes information for rapid mobile service acquisition of the mobile service data and version information of a channel delivering the signaling information table, and wherein the TPC data includes FIC version information for indicating an update of the FIC data;
• and
• transmitting a broadcast signal including the plurality of groups,
• wherein at least two of the known data sequences are spaced 16 segments apart and wherein at least two of the known data sequences have different lengths.

A broadcast transmitter comprising:

• a Reed Solomon (RS) encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data to generate at least one of a plurality of RS frames belonging to an ensemble, the ensemble including a signaling information table which comprises Internet protocol (IP) access information of the mobile service data;
• a group formatting means for mapping the at least one of the plurality of RS frames into a plurality of groups, wherein each group includes a portion of data included in a corresponding RS frame, known data sequences, a portion of fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes information for rapid mobile service acquisition of the mobile service data and version information of a channel delivering the signaling information table, and wherein the TPC data includes FIC version information for indicating an update of the FIC data;
• and
• a transmitting means for transmitting a broadcast signal including the plurality of groups,
• wherein at least two of the known data sequences are spaced 16 segments apart and wherein at least two of the known data sequences have different lengths.