A method for transmitting transmission packets by a transmitting apparatus in a communication system, the method comprising: generating a parity block to protect a source block by using a forward error correction, FEC, encoding, the source block including at least one input transmission packet; generating at least one source transmission packet from the source block to deliver the source block, a source transmission packet among the at least one source transmission packet is generated by adding a first FEC payload Identifier, ID, to an input transmission packet of the source block; generating at least one repair transmission packet from the parity block to deliver the parity block, a repair transmission packet among the at least one repair transmission packet is generated by adding a second FEC payload ID to at least one parity symbol of the parity block; and transmitting a plurality of transmission packets based on the at least one source transmission packet and the at least one repair transmission packet, wherein a transmission packet of the plurality of transmission packets includes a transmission packet header, and characterized in that the transmission packet header (512, 532) includes FEC type information indicating a type of a FEC scheme for the transmission packet: if the FEC type information is set to a first value, the FEC type information indicates that the FEC encoding is not applied and the transmission packet comprises an input transmission packet without adding a first FEC payload ID, if the FEC type information is set to a second value, the FEC type information indicates that the FEC encoding is applied and the transmission packet is the source transmission packet with the first FEC payload ID, and if the FEC type information is set to a third value, the FEC type information indicates that the FEC encoding is applied and the transmission packet is the repair transmission packet. generating a parity block to protect a source block by using a forward error correction, FEC, encoding, the source block including at least one input transmission packet; generating at least one source transmission packet from the source block to deliver the source block, a source transmission packet among the at least one source transmission packet is generated by adding a first FEC payload Identifier, ID, to an input transmission packet of the source block; generating at least one repair transmission packet from the parity block to deliver the parity block, a repair transmission packet among the at least one repair transmission packet is generated by adding a second FEC payload ID to at least one parity symbol of the parity block; and transmitting a plurality of transmission packets based on the at least one source transmission packet and the at least one repair transmission packet, wherein a transmission packet of the plurality of transmission packets includes a transmission packet header, and characterized in that the transmission packet header (512, 532) includes FEC type information indicating a type of a FEC scheme for the transmission packet: if the FEC type information is set to a first value, the FEC type information indicates that the FEC encoding is not applied and the transmission packet comprises an input transmission packet without adding a first FEC payload ID, if the FEC type information is set to a second value, the FEC type information indicates that the FEC encoding is applied and the transmission packet is the source transmission packet with the first FEC payload ID, and if the FEC type information is set to a third value, the FEC type information indicates that the FEC encoding is applied and the transmission packet is the repair transmission packet. if the FEC type information is set to a first value, the FEC type information indicates that the FEC encoding is not applied and the transmission packet comprises an input transmission packet without adding a first FEC payload ID, if the FEC type information is set to a second value, the FEC type information indicates that the FEC encoding is applied and the transmission packet is the source transmission packet with the first FEC payload ID, and if the FEC type information is set to a third value, the FEC type information indicates that the FEC encoding is applied and the transmission packet is the repair transmission packet.