Patent ID: 9344223
Filing Date: 2016-05-17
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for transmitting an uplink signal in a User Equipment (UE) in a wireless communication system, the method comprising: receiving, from a Base Station (BS), a scheduling grant; precoding the uplink signal using precoding information included in the scheduling grant; transmitting, to the BS, the uplink signal using two or more antennas; and retransmitting, to the BS, the uplink signal using the two or more antennas based on ACK/NACK corresponding to the transmitted uplink signal, wherein if a scheduling grant for a retransmission is not received from the BS, the retransmitted uplink signal is precoded using precoding information included in a most recent scheduling grant or using a predetermined precoding matrix.