COMMUNICATION APPARATUS AND DATA TRANSMISSION METHEOD THEREOF

摘要

Disclosed are a communication device and a data transmission method of the communication device. Upon receiving a feedback message which corresponds to data failed to be received by each communication receiver apparatus, the communication device generates a feedback matrix corresponding to the feedback message, selects candidate transmission data from the feedback matrix, and executes the network coding of the candidate transmission data to retransmit the data to each communication receiver apparatus. [Reference numerals] (S310) Receiving a feedback message; (S320) Updating a feedback matrix; (S330) Rearranging the feedback matrix according to priorities; (S340) Selecting a part of the feedback matrix to be used for transmission if candidate transmission data is greater than available transmission resources; (S350) Generating retransmission data in the selected part of the feedback matrix; (S360) Adding data to be transmitted if the generated retransmission data is less than the available transmission resources; (S370) Dividing the final retransmission data into a transmission unit; (S380) Adding a header to every transmission unit and transmitting the same