PACKET TRANSMITTER, PACKET RECEIVER, COMMUNICATION SYSTEM, AND PACKET COMMUNICATION METHOD

摘要

A packet transmitter (2) is provided with a packet transmission means (20) which transmits a packet having a sequence number fixed thereto to a transmission destination device (3); a transmitted packet indicating information generation means (21) which generates transmitted packet indicating information indicating a packet transmitted by the packet transmission means (20); and a transmitted packet indicating information transmission means (23) which transmits the transmitted packet indicating information to the transmission destination device (3) separately from the packet.