TRANSMISSION CONTROL METHOD FOR PACKET COMMUNICATION AND PACKET COMMUNICATION SYSTEM

The transmission of packets, in which data signals or control signals are stored in the payload of a packet comprising a payload and a header having a sequence number area for storing sequence numbers, is controlled. Data signal sequence numbers, which are added to a data packet storing data signals in a payload, are generated from a first communication device, are stored into each of the sequence number areas of the data packet, and are sent to a second communication device from the first communication device in order to control the transmission of the data packet on the basis of the data signal sequence numbers. Similarly, control signal sequence numbers, which are added to the control packet storing control signals in a payload, are generated from the first communication device independently from the data signal sequence numbers, are stored into each of the sequence number areas of the control packet, and are sent to the second communication device from the first communication device in order to control the transmission of the control packet on the basis of the control signal sequence numbers.