Patent ID: 8644201

Claim:
A method for transmitting a broadcast signal, the method comprising; multiplexing mobile data and main data; and transmitting a transmission frame including the multiplexed mobile data and main data, wherein a parade of data groups is transmitted during slots within the transmission frame, the slots being time periods for the multiplexing of the mobile data and the main data, wherein each slot includes a specified number of mobile data packets, a first scalable number of mobile data packets, and a second scalable number of main data packets, wherein each of the data groups includes a plurality of regions and signaling information indicating a number of the first scalable number, the plurality of regions including data blocks that include a plurality of data segments, wherein first and second regions of the plurality of regions include a primary ensemble of the mobile data, known data sequences, and signaling bytes for signaling the mobile data, wherein third, fourth, and fifth regions of the plurality of regions include a secondary ensemble of the mobile data and the fifth region of the plurality of regions further includes the first scalable number of mobile data packets, the first scalable number of mobile data packets scalable up to 38 packets, wherein each of the data groups has a corresponding data group number and each slot has a corresponding slot number, and wherein each data group number is assigned to one of the slot numbers such that consecutive slots carry data groups of inconsecutive data group numbers.