| 摘要 |
<p>PROBLEM TO BE SOLVED: To satisfy a requirement of promptly retransmitting missing data without reduced communication performance to the possible extent, while achieving data arrival guarantee making full use of high speed UDP based communication.SOLUTION: A communication device on the transmission side adds sequence numbers to a plurality of data to be transmitted, to successively transmit the plurality of data, and on receiving a retransmission request including a sequence number from a communication device on the reception side, transmits data corresponding to the sequence number to the communication device on the reception side. The communication device on the reception side receives the data transmitted from the communication device on the transmission side, and determines whether or not a missing sequence number exists in the received data. On determining that a missing sequence number exists, the communication device on the reception side transmits a retransmission request, including the missing sequence number, to the communication device on the transmission side, at predetermined timing.</p> |
