BROADCAST SIGNAL TRANSMISSION DEVICE, BROADCAST SIGNAL RECEPTION DEVICE, BROADCAST SIGNAL TRANSMISSION METHOD, AND BROADCAST SIGNAL RECEPTION METHOD

摘要

A method for processing broadcast signal transmission according to an embodiment of the present invention comprises the steps of: generating one or more first layer data units including first level signaling data and broadcast data for a broadcast service; generating one or more second layer data units including the one or more first layer data units and second level signaling data; and generating a broadcast signal including the one or more second layer data units, wherein the first level signaling data includes information that describes the broadcast service, and the second level signaling data includes a channel scan and information required to acquire the first level signaling data.