Reference signal and signaling design for non-orthogonal multiple access using legacy user equipment as base layer

摘要

According to various aspects of the present disclosure, the apparatus may transmit a first data resource element for the first UE on the base layer. The first UE is not configured for NOMA communication. The apparatus may also transmit data for the second UE on the enhancement layer. The second UE is configured for NOMA communication. In addition, the enhancement layer is overlaid on the base layer. The reference signal may include a cell specific reference signal. The apparatus may be further configured to receive a traffic power ratio for the second UE that the second UE will follow if the second UE is a base layer UE in NOMA communication.