Patent ID: 8542756
Filing Date: 2013-09-24
Classification: H04L

Abstract:
1. A communication method of transmitting a plurality of packets from a first communication device to a second communication device, the communication method comprising: associating identification information items with combinations of reception results of the plurality of packets in the second communication device, a number of the identification information items being less than a number of the plurality of packets; transmitting, by the first communication device, the plurality of packets to the second communication device in an initial transmission; specifying, by the second communication device, a first of the identification information items based on reception results of the plurality of packets in an initial reception, and transmitting, by the second communication device, the first identification information item to the first communication device; retransmitting, by the first communication device, encoded packets to the second communication device by determining an encoding method decodable by the second communication device from successfully received packets in the initial reception, and encoding the plurality of packets based on the determined encoding method to obtain the encoded packets, in order to retransmit the encoded packets to the second communication device; and decoding, by the second communication device, the encoded packets based on the successfully received packets in the initial reception, and reproducing, by the second communication device, incorrectly received packets in the initial reception, wherein a plurality of error patterns Ai are provided with respect to a number of errors, Ei, and the first identification information item with respect to the number of errors, Ei, corresponds to error patterns Bi of the plurality of error patterns Ai with respect to the number of errors, Ei, where Ai, Bi, Ei, and i are integers satisfying Ai>Bi>1, Ei>=0, and i>=1.