A device for transmitting a packet includes a first processor configured to generate a first packet based on a first content; a second processor configured to generate a second packet independently from the first processor based on a second content; a signaling processor configured to generate a signaling packet based on the first content and the second content; and a communication interface configured to transmit the first packet, the second packet, and the signaling packet, wherein the first processor, the second processor, and the signaling processor respectively generate the first packet, the second packet, and the signaling packet in parallel.