BROADCAST COMMUNICATION METHOD AND DEVICE, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To keep a satisfactory state of communication and to prevent the lowering of throughput in the broadcast communication by transmitting the retransmission request data from a communication device of the receiving side if the transmission data having the same information are not received even once in a normal state by the communication device of the receiving side. SOLUTION: A retransmission routine is started (S104), a retransmission interval t1 that is previously set is calculated as a time interval when the same divided data are retransmitted (S105), the transmission data are produced to write the same divided data in the next transmitting buffer (S106) and the contents of the transmitting buffer are transmitted (S107). In these steps, data 1, i.e., the 1st divided data, are written in the 2nd transmitting buffer and then sent to plural receiving sides as packets. The retransmission request data are transmitted from a communication device of the receiving side to retransmit the transmission data if the transmission data having the same information are not received even once in a normal state by the transmission device of the receiving side.