COMMUNICATION SYSTEM AND METHOD OF COMMUNICATION

摘要

When load data is transmitted at a plurality of different rates between a pair of communication devices, a communication device (11) according to the present invention maintains a transmission rate table storing a response time indicating a transmission time when test data was transmitted between communication devices (11, 12) and the corresponding transmission rate. The communication device (11) determines a required transmission rate for actual data, detects the response time indicating the transmission time when test data was transmitted between the communication devices (11, 12), determines on the basis of the transmission rate table the transmission rate corresponding to the response time as the already-used transmission rate, determines an effective residual transmission rate from the maximum transmission rate (Rmax) and the already-used transmission rate of a communication network (100), and when the effective residual transmission rate is higher than the required transmission rate, starts the transmission of the actual data.