公开(公告)号：US09876611B2

公开(公告)日：2018-01-23

申请号：US15072982

申请日：2016-03-17

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： Sang Won Choi ,  Ju Yeop Kim ,  Yong Soo Song ,  Yong Gyu Kim

IPC: H04L1/18 ,  H04L1/08 ,  H04L1/16

CPC classification number: H04L1/08 ,  H04L1/1607 ,  H04L1/1829 ,  H04L1/1867

Abstract: A method for transmitting packets by a transmitter in a wireless communication network and retransmitting the packets not received correctly by receivers is discussed. The method includes transmitting the packets to at least two receivers, receiving reception acknowledgement response signals including ACK or NACK signals for the packets transmitted to the receivers, analyzing patterns of the received reception acknowledgement response signals in accordance with a number of the ACK or NACK signals, differently index coding the packets which are not received correctly by each receiver, and retransmitting the index-coded packets.