Method for receiving a broadcast signal

A method of transmitting non-real time (NRT) service, the method comprising:

• generating internet protocol (IP) datagrams including the NRT service that is delivered in advance of its use and stored in a receiving device, and signaling data including a service map table (SMT) containing service-level attributes for the NRT service and a service guide (SG) containing a content fragment announcing the NRT service;
• and
• transmitting a broadcast signal including the generated IP datagrams,
• wherein the NRT service is associated with one or more content items, each of which consists of one or more files being delivered via a File Delivery over Unidirectional Transport (FLUTE) file delivery sessions,
• wherein both the content items and the files are linked by matching values of first linkage elements defined for the files in a FLUTE File Description Table (FDT) with values of second linkage elements in the content fragment of the SG,
• wherein each of the FLUTE file delivery sessions includes one or more FLUTE channels, and
• wherein all of the FLUTE channels in each of the FLUTE file delivery sessions have a same IP address and UDP port numbers signaled with a single component descriptor in the SMT.

An apparatus for receiving non-real time (NRT) service, the apparatus comprising:

• a tuner configured to receive a broadcast signal including the NRT service that is delivered in advance of its use and stored in a receiving device, and signaling data including a service map table (SMT) containing service-level attributes for the NRT service and a service guide (SG) containing a content fragment announcing the NRT service;
• and
• a storage configured to store the NRT service and the signaling data,
• wherein the NRT service is associated with one or more content items, each of which consists of one or more files being delivered via a File Delivery over Unidirectional Transport (FLUTE) file delivery session,
• wherein both the content items and the files are linked by matching values of first linkage elements defined for the files in a FLUTE File Description Table (FDT) with values of second linkage elements in the content fragment of the SG,
• wherein each of the FLUTE file delivery sessions includes one or more FLUTE channels, and
• wherein all of the FLUTE channels in each of the FLUTE file delivery sessions have a same IP address and UDP port numbers signaled with a single component descriptor in the SMT.