COMMUNICATION DEVICE, SYSTEM AND METHOD

摘要

This invention provides a method wherein even if the number of packets per unit time is small, the FEC encoding block size is adaptively or fixedly changed, thereby effectively suppressing the packet loss due to a burst loss without increasing the delay. A communication device (101) comprises a transmission unit (102) and a reception unit (103). The transmission unit (102) has a function to calculate an FEC (Forward Error Correction) code on the basis of the number of packets per encoding time and the value of a burst loss time of a network line. The reception unit (103) decodes FEC encoded packets and measures and conveys line quality information of the network to the transmission unit (102). The transmission unit (102) transmits packets at equal intervals in the same time as the encoding time and can change the FEC calculation mode on the basis of the burst loss time and the encoding time.