Patent ID: 9590704
Date: 2017-03-07
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method performed by a User Equipment, UE, for Hybrid Automatic Repeat Request, HARQ, retransmission of data in a multi-antenna wireless communication system, comprising: receiving Acknowledgement/Negative Acknowledgement, ACK/NACK, feedback information relating to first data transmitted on a primary stream and second data transmitted on a secondary stream, wherein the first data transmitted on the primary stream is associated with a first HARQ process and the second data transmitted on the secondary stream is associated with a second HARQ process; associating the received ACK/NACK feedback with a correct HARQ process, the correct HARQ process comprising either the first HARQ process or the second HARQ process; and retransmitting the second data on the primary stream, upon rank reduction where the primary stream is available for transmission and the secondary stream has been cancelled.