A broadcast signal transmission processing device according to one embodiment of the present invention, comprises a header compression processor that generates first packets including first header information in a uncompressed form and second packets including second header information in a compressed form by performing header compression on Internet protocol (IP) packets containing broadcast data; a header information extracting processor that extracts the header information from the first packets and converts the first packets from which the first header information is extracted to third packets including third header information in a compressed form; a signaling data generating processor that generates signaling packets containing information related to the header compression and mapping information between the IP packets and multiple data pipes; and a broadcast signal transmitting processor that transmits a broadcast signal including the multiple data pipes.