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    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
    9.
    发明申请
    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 有权

    公开(公告)号：US20150373736A1

    公开(公告)日：2015-12-24

    申请号：US14762159

    申请日：2014-01-15

    申请人： SAMSUNG ELECTRONICS CO., LTD. ,  KOREA NATIONAL UNIVERSITY OF TRANSPORTATION INDUSTTRY ACADEMIC COOPERATION FOUNDATION

    发明人： Hyoungju JI ,  Cheol MUN ,  Younsun KIM ,  Juho LEE ,  Hyojin LEE ,  Joonyoung CHO

    IPC分类号： H04W72/12 ,  H04B7/04 ,  H04B7/06 ,  H04L5/00

    CPC分类号： H04B7/0413 ,  H04B7/0697 ,  H04B7/2621 ,  H04L5/0023 ,  H04L5/0048 ,  H04W72/1273

    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 technique wherein user equipment (UE) estimates the spatial correlation between channels of different horizontal dimension SEs belonging to the same SRB received in different TTIs and the spatial correlation between channels of horizontal dimension SEs belonging to different SRBs received in the same TTI, and feeds information for changing the size of SRB of the corresponding UE to an optimal size back to eNodeB. The present invention proposes a technique wherein the UE estimates downlink channels through CSI-RSs transmitted from each SRB, and each UE feeds an index of a preferred SRB, a rank of the corresponding SRB in the vertical dimension, and channel quality information (CQI) back to eNodeB. When each UE determines the rank, it is possible to transmit the ranks to the fullest extent in the vertical dimension and only a single rank from each SRB in the horizontal dimension.

    REFERENCE SIGNAL MEASUREMENT METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM INCLUDING PLURAL BASE STATIONS WITH DISTRIBUTED ANTENNAS
    10.
    发明申请
    REFERENCE SIGNAL MEASUREMENT METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM INCLUDING PLURAL BASE STATIONS WITH DISTRIBUTED ANTENNAS 审中-公开
    参考信号测量方法和在无线通信系统中使用的装置，包括具有分布式天线的多个基站

    公开(公告)号：US20150230260A1

    公开(公告)日：2015-08-13

    申请号：US14690971

    申请日：2015-04-20

    申请人： Samsung Electronics Co., Ltd.

    发明人： Younsun KIM ,  Youngbum KIM ,  Juho LEE ,  Hyojin LEE ,  Joonyoung CHO ,  Hyoungju JI ,  Seunghoon CHOI

    IPC分类号： H04W72/08 ,  H04B7/04 ,  H04W72/04

    CPC分类号： H04B7/0486 ,  H04B7/022 ,  H04B7/04 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0645 ,  H04W24/10 ,  H04W72/042 ,  H04W72/082

    摘要： An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a Distributed Antenna System (DAS). A method for a base station to notify a terminal of reference signal measurement information in a mobile communication system comprises determining whether the terminal is in a Rank Indicator/Precoding Matrix Indicator (RI/PMI) disabled mode, selecting, when the terminal is in the RI/PMI disabled mode, the reference signal to be measured by the terminal between a Cell-specific Reference Signal (CRS) and a Channel Status Information Reference Signal (CSI-RS), notifying the terminal of the reference signal measurement information with the selection result, and receiving channel information generated based on the reference signal measurement information from the terminal.

    摘要翻译： 提供了一种在移动通信系统中测量用于有效下行链路传输的参考信号的装置和方法。 该系统包括多个基站，每个基站具有基于分布式天线系统（DAS）分布在其服务区域中的多个天线。 一种用于基站在移动通信系统中通知终端参考信号测量信息的方法，包括：确定终端是否处于秩指示/预编码矩阵指示符（RI / PMI）禁用模式，当终端处于 RI / PMI禁用模式，由小区特定参考信号（CRS）和信道状态信息参考信号（CSI-RS）之间的终端要测量的参考信号，通过选择通知终端参考信号测量信息 结果以及基于来自终端的参考信号测量信息生成的信道信息。