Patent ID: 9258095
Filing Date: 2016-02-09
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method by a subscriber station, comprising: receiving a control message from a base station for scheduling an uplink data transmission, the control message comprising a cyclic shift indicator (CSI) field indicating a cyclic shift (CS) and an orthogonal cover code (OCC); and transmitting data and reference signals in response to the control message, the reference signal being acquired based on the indicated cyclic shift and the OCC, wherein in response to the CSI field having a first value among a first subset, an OCC for a first transmission layer is same as an OCC for a second transmission layer, and is different from an OCC for third and fourth transmission layers, and in response to the CSI field having a second value among a second subset, OCCs for all transmission layers are the same, all elements of the second subset being different from all elements of the first subset.