CPC H04B 7/0452 (2013.01) [H04B 7/0456 (2013.01); H04L 5/0007 (2013.01); H04L 5/0021 (2013.01); H04L 5/0048 (2013.01); H04L 25/0242 (2013.01); H04W 72/0453 (2013.01); H04W 72/1289 (2013.01)] | 26 Claims |
26. An apparatus for wireless communications by a user equipment (UE), comprising:
a processor configured to:
determine, based on DL control signaling, ports of a multi-dimensional array of antennas and spatial multiplexed layers for DMRS symbols transmission, one or both of the ports and the layers being multiplexed in an orthogonal DMRS pattern using an orthogonal cover code (OCC) and one or more code division multiplexing (CDM) groups; and
a transceiver configured to:
receive, from a base station, downlink (DL) control signaling including an indication indicating a demodulation reference signal (DMRS) pattern, wherein the indication comprises multiple bits, wherein a value of the multiple bit indication indicates whether the configured DMRS pattern is a legacy DMRS pattern or a non-legacy DMRS pattern, and wherein the indication identifies at least ports in the DMRS pattern for DMRS symbol transmission, and
receive the DMRS symbols based on the determination.
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