Patent ID: 8521211

Claim:
A communication system comprising: a communication station that transmits data; and a plurality of communication terminals each of which receives the data from the communication station and is capable of sending the communication station a request for retransmitting the data, the communication station comprising a synthesizer that, if the communication station receives the request for retransmitting first data from a first communication terminal that is one of the plurality of communication terminals, synthesizes second data as retransmission data of the first data and third data to thereby create synthesized data, the second data being destined for the first communication terminal, the third data being destined for a second communication terminal that is another one of the plurality of communication terminals, and a transmitter that transmits the synthesized data created by the synthesizer using a single communication resource, the second communication terminal comprising a memory that stores the first data, and a decoder that receives the synthesized data from the communication station and decodes the third data based on the synthesized data and the first data stored in the memory.