Patent ID: 7505412
Filing Date: 2009-03-17
Classification: H04L

Abstract:
1. A transmission control method for use in a communication network, comprising: assigning sequence information to each data block to be sequentially transmitted from a sender device to a receiver device; transmitting a plurality of original data blocks to said receiver device after assigning said sequence information to each of said plurality of original data blocks; retransmitting, from among said plurality of original data blocks, a data block for which an acknowledgement signal is not received; receiving an acknowledgement signal containing sequence information of a data block that has not been received by said receiver device; determining which of said plurality of original data blocks or said retransmitted data block of one of said plurality of original data blocks said received acknowledgement signal acknowledges, the determination being based on said sequence information contained in said received acknowledgement signal and at least one of said sequence information contained in at least one of the plurality of original data blocks or sequence information contained in said retransmitted data block; and transmitting a data block subsequent to said transmitted plurality of original data blocks when it is determined that said acknowledgement signal acknowledges receipt of one of said plurality of original data blocks; otherwise retransmitting an original data block subsequent to a data block corresponding to said received acknowledgement signal, when it is determined that said acknowledgement signal acknowledges receipt of a retransmitted data block of one of said plurality of original data blocks and when it is determined that there is a subsequent data block for retransmission.