Patent ID: 8520545

Claim:
A communication unit comprising: a transmission-time measurement section that calculates a transmission time length of a packet; a jitter measurement section that calculates an average value of jitter based on an arrival time of the packet; an FEC-maximum-jitter measurement section that calculates, based on a relative redundancy determined beforehand, a first estimated maximum jitter representing a maximum jitter estimated in a case of selecting a forward error correction (FEC) scheme; an ARQ-maximum-jitter measurement section that calculates, based on said transmission time length and said average value of jitter, a second estimated maximum jitter representing a maximum jitter estimated in a case of selecting an automatic repeat request (ARQ) scheme; and a packet control section that selects said FEC scheme if said first estimated maximum jitter is smaller than said second estimated maximum jitter, and selects said ARQ scheme if said first estimated maximum jitter is larger than said second estimated maximum jitter.