Method and device for transmitting channel state information reference signal, hybrid spatial division multiplexing, and space division multiple access in wireless communication system using two-dimensional planar array antenna
Samsung Electronics Co., Ltd.;Korea National University of Transportation Industry Academic Cooperation Foundation
发明人:
Ji Hyoungju,Mun Cheol,Kim Younsun,Lee Juho,Lee Hyojin,Cho Joonyoung
申请号：
US201414762159
公开号：
US9923612(B2)
申请日:
2014.01.15
申请国别(地区):
美国
年份:
2018
代理人:
The Farrell Law Firm, P.C.
摘要：
The present invention proposes a hybrid spatial multiplexing (SM) and a space division multiple access (SDMA) technique in a frequency division duplex (FDD) massive multiple-input multiple output (MIMO) system using a two-dimensional planar array antenna, which effectively transmits a channel state information reference signal (CSI-RS) for estimating a downlink two-dimensional space channel using only a limited amount of downlink radio resources, and optimally selects and performs the SM and SDMA techniques in a two-dimensional space channel. To this end, the present invention proposes a technique which defines space resource blocks (SRB) by grouping space elements (SE) having a high spatial correlation between downlink channels in the horizontal dimension and corresponding SEs thereof in the vertical dimension, and transmits CSI-RSs for estimating channels in vertical dimension SEs corresponding to one selected horizontal SE in each SRB every transmit time interval (TTI). The present invention proposes a tec
