Patent ID: 9730193
Date: 2017-08-08
CPC Classifications: H04L,H04W

Claim:
1. A method for wireless communications, comprising: receiving, at a user equipment (UE), downlink transmissions indicating at least one of a first codeword or a second codeword to be retransmitted, the downlink transmissions including a physical downlink control channel (PDCCH) grant indicating at least one codeword to be retransmitted; generating, at the UE, a demodulation reference signal (DM-RS) to be sent with the at least one codeword to be retransmitted, the DM-RS generated based at least in part on a cyclic shift or an orthogonal cover code in the PDCCH grant; and retransmitting, at the UE, the at least one codeword with the DM-RS according to a retransmission rank.