Patent ID: 8477676

Claim:
A method of transmitting a broadcast signal, the method comprising: encoding mobile data to build a 2-dimensional Reed-Solomon (RS) frame through which the mobile data belonging to an ensemble including a service of the mobile data is RS-cyclic redundancy check (RS-CRC) encoded, wherein the encoded RS frame is separated into a plurality of portions; encoding signaling information that includes fast information channel (FIC) data and transmission parameter channel (TPC) data, the FIC data having cross layer information between a physical layer and an upper layer; forming data groups, wherein each of the data groups includes the encoded signaling information, known data sequences and one of the plurality of portions; removing placeholders for main data and non-systematic RS parity data in the data groups; replacing placeholders for MPEG-2 headers in the data groups with MPEG-2 headers having packet identifications (IDs) of mobile data packets; forming mobile data packets including data in the data groups; multiplexing the mobile data packets and main data packets including main data to generate multiplexed data packets; and transmitting a transmission frame including the multiplexed data packets, wherein the transmission frame includes five sub-frames, wherein the TPC data indicates a total number of data groups to be transmitted during a subframe, wherein the RS frame includes an RS frame payload having a size of 187×N bytes, wherein N is an integer dependent on the TPC data, and wherein the RS frame payload includes a plurality of packets.