Apparatus and method for configuring mmt payload header

An apparatus for constructing an MPEG Media Transport (MMT) payload header and transmitting a multimedia packet including the MMT payload header based on an MMT system, the MMT system including an encapsulation layer and a delivery function layer, the apparatus comprising:

• at least one processor;
• and
• a memory storing at least one instructions executed by the at least one processor, the instructions for:
• receiving at least one data unit output from the encapsulation layer, each data unit including a data unit header;
• is determining whether there are more than one MFUs to be aggregated and mapped into one payload in the at least one data unit;
• including once, in the MMT payload header, an MPU_sequence_number of an MPU to which more than one MFU belong on the delivery function layer;
• forming an MMT transport packet by applying the MMT payload header to MMT payload data;
• and
• transmitting the formed MMT transport packet,
• wherein a data unit header for timed media MFU is differently constructed from a data unit header for non-timed media MFU.

A method of constructing an MPEG Media Transport (MMT) payload header for transmitting a multimedia packet including the MMT payload header based on an MMT system, the MMT system including an encapsulation layer and a delivery function layer, the method comprising:

• receiving at least one data unit output from the encapsulation layer, each data unit including a data unit header;
• extracting, from at least one data unit header of the at least one data unit, an MPU_sequence_number of an Media Processing Unit (MPU) to which one Media Fragment Unit (MFU) or a plurality of MFUs to be aggregated and mapped into one payload belong;
• including the extracted MPU_sequence_number of the MPU in the MMT payload header on the delivery function layer;
• forming an MMT transport packet by applying the MMT payload header to MMT payload data;
• and
• transmitting the formed MMT transport packet,
• wherein a data unit header for timed media MFU is differently constructed from a data unit header for non-timed media MFU.