Method for transmitting/receiving broadcasting signal and broadcasting signal receiver

A broadcast signal receiver comprising:

• a tuner configured to receive a broadcast signal including a transmission identifier of a collection of mobile service data groups being included in slots, each slot being a time period for multiplexing mobile service data and main data,
• wherein the mobile service data is processed using a process comprising:
• Reed Solomon (RS)—cyclic redundancy check (CRC) encoding the mobile service data,
• converting the RS-CRC encoded mobile service data into a bit unit of data to generate first converted mobile service data,
• encoding the first converted mobile service data using a coding rate of G/H, wherein G and H are integers and wherein H is greater than G,
• converting the RS-CRC encoded mobile service data into a byte unit of data to generate second converted mobile service data, and
• non-systematic RS encoding the second converted mobile service data, and
• wherein the main data is encoded by systematic RS encoding;
• a demodulator configured to demodulate the broadcast signal;
• and
• a controller configured to acquire the transmission identifier from the broadcast signal and control the tuner to receive the collection of mobile service data groups corresponding to the transmission identifier by cyclically supplying power to the tuner,
• wherein the broadcast signal has a plurality of types of known data sequences.