公开(公告)号：US11677448B2

公开(公告)日：2023-06-13

申请号：US15549597

申请日：2016-02-09

Applicant: QUALCOMM INCORPORATED

Inventor： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Guodong Li ,  Jilei Hou

IPC: H04B7/0452 ,  H04B7/0456 ,  H04L5/00 ,  H04L25/02 ,  H04W72/04 ,  H04W72/12 ,  H04W72/0453

CPC classification number: H04B7/0452 ,  H04B7/0456 ,  H04L5/0007 ,  H04L5/0021 ,  H04L5/0048 ,  H04L25/0242 ,  H04W72/0453 ,  H04W72/1289

Abstract: Certain aspects of the present disclosure support demodulation reference signal (DMRS) enhancement for higher order multi-user multiple-input multiple-output (MU-MIMO) communications. An example method generally includes determining a plurality of ports of a multi-dimensional array of transmit antennas and a number of spatial multiplexed layers for transmission to a plurality of user equipments (UEs), configuring a demodulation reference signal (DMRS) pattern by multiplexing the layers or the ports in the DMRS pattern, using an orthogonal cover code (OCC) and one or more code division multiplexing (CDM) groups, and transmitting DMRS symbols based on the configured DMRS pattern using the multiplexed layers and the ports.