Method of transmitting data using spatial multiplexing
    91.
    发明授权
    Method of transmitting data using spatial multiplexing 失效
    使用空间复用传输数据的方法

    公开(公告)号:US08711828B2

    公开(公告)日:2014-04-29

    申请号:US13058481

    申请日:2009-08-11

    IPC分类号: H04L27/26 H04B7/02 H04B7/06

    摘要: A data transmission method using spatial multiplexing is disclosed. The data transmission method using spatial multiplexing includes modulating at least one codeword to generate at least one modulation symbol, mapping the at least one modulation symbol to a layer whose number is determined according to its rank to generate a layer-mapped symbol stream, performing discrete Fourier transform (DFT) on the layer-mapped symbol stream to generate a frequency domain symbol stream, performing precoding on the frequency domain symbol stream, mapping the precoded frequency domain symbol stream to subcarriers, and then performing inverse fast Fourier transform (IFFT) on the precoded frequency domain symbol stream-mapped subcarriers to generate SC-FDMA symbols; and transmitting the SC-FDMA symbols by using a plurality of transmission antennas. Spatial multiplexing having a low PAPR can be possibly performed in an SC-FDMA system.

    摘要翻译: 公开了一种使用空间复用的数据传输方法。 使用空间复用的数据传输方法包括调制至少一个码字以产生至少一个调制符号,将至少一个调制符号映射到根据其等级确定其数量的层,以生成层映射符号流,执行离散 在层映射的符号流上进行傅里叶变换(DFT)以产生频域符号流,对频域符号流执行预编码,将预编码的频域符号流映射到子载波,然后执行快速傅立叶逆变换(IFFT), 预编码的频域符号流映射子载波以产生SC-FDMA符号; 以及通过使用多个发送天线发送SC-FDMA符号。 可以在SC-FDMA系统中执行具有低PAPR的空间复用。

    Method of measuring interference
    92.
    发明授权
    Method of measuring interference 有权
    测量干扰的方法

    公开(公告)号:US08644865B2

    公开(公告)日:2014-02-04

    申请号:US12921148

    申请日:2009-03-05

    IPC分类号: H04B15/00 H04B7/00 H04B17/00

    摘要: A method of measuring interference to perform efficient data communication is disclosed. A method of measuring interference of neighboring cells comprises allocating one or more first resource elements, to which pilot signals are allocated, to predetermined symbol regions included in a first resource block; allocating one or more second resource elements for measuring interference of the neighboring cells to a first symbol region of the predetermined symbol regions; and measuring interference of the neighboring cells using the one or more second resource elements.

    摘要翻译: 公开了一种测量干扰以执行高效数据通信的方法。 一种测量相邻小区的干扰的方法包括向包括在第一资源块中的预定符号区域分配一个或多个向其分配导频信号的第一资源单元; 分配一个或多个第二资源元素,用于测量相邻小区与预定符号区域的第一符号区域的干扰; 以及使用所述一个或多个第二资源元素测量所述相邻小区的干扰。

    TECHNIQUE FOR TRANSMITTING AND RECEIVING DOWNLINK REFERENCE SIGNALS
    93.
    发明申请
    TECHNIQUE FOR TRANSMITTING AND RECEIVING DOWNLINK REFERENCE SIGNALS 有权
    发送和接收下行链路参考信号的技术

    公开(公告)号:US20130279466A9

    公开(公告)日:2013-10-24

    申请号:US12698869

    申请日:2010-02-02

    IPC分类号: H04W72/04

    摘要: A technique for receiving and transmitting downlink reference signals is disclosed. When transmitting downlink data demodulation reference signals (DMRS) (or reference signals for downlink data demodulation) by using two or more layers, the DMRS of each layer may be multiplexed by using a code division multiplexing method and then transmitted. The DMRS for each of the two or more layers may be used for one user equipment or for two or more user equipments. And, downlink control signals for transmitting and receiving such DMRS may be configured to have the same format regardless of a single-user mode (or SU-MIMO mode) or a multi-user mode (or MU-MIMO mode), thereby being used.

    摘要翻译: 公开了一种用于接收和发送下行链路参考信号的技术。 当通过使用两层或更多层来发送下行链路数据解调参考信号(DMRS)(或下行链路数据解调的参考信号)时,可以通过使用码分复用方法来复用每层的DMRS,然后发送。 两层或更多层中的每一层的DMRS可以用于一个用户设备或两个或更多个用户设备。 并且,无论单用户模式(或SU-MIMO模式)还是多用户模式(或MU-MIMO模式),都可以将用于发送和接收这样的DMRS的下行链路控制信号配置为具有相同的格式,从而被使用 。

    Method and apparatus for transmitting reference signal in wireless communication system
    94.
    发明授权
    Method and apparatus for transmitting reference signal in wireless communication system 失效
    用于在无线通信系统中发送参考信号的方法和装置

    公开(公告)号:US08514975B2

    公开(公告)日:2013-08-20

    申请号:US13059831

    申请日:2009-08-21

    IPC分类号: H04L27/00

    CPC分类号: H04L5/0016 H04L5/005

    摘要: A method and an apparatus for transmitting a reference signal in a wireless communication system are provided. The method includes generating a first sequence and a second sequence, mapping the first sequence to reference symbols in a resource block, mapping the second sequence to the same reference symbols in the resource block, and transmitting a first reference signal (RS) based on the first sequence through a first antenna, and a second RS based on the second sequence through a second antenna.

    摘要翻译: 提供了一种用于在无线通信系统中发送参考信号的方法和装置。 该方法包括生成第一序列和第二序列,将第一序列映射到资源块中的参考符号,将第二序列映射到资源块中的相同参考符号,以及基于 通过第一天线的第一序列和通过第二天线的第二序列的第二RS。

    METHOD AND DEVICE FOR CODEBOOK GENERATION AND DOWNLINK SIGNAL TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS
    96.
    发明申请
    METHOD AND DEVICE FOR CODEBOOK GENERATION AND DOWNLINK SIGNAL TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS 有权
    用于支持多个天线的无线通信系统中的代码生成和下行信号传输的方法和装置

    公开(公告)号:US20130129008A1

    公开(公告)日:2013-05-23

    申请号:US13521211

    申请日:2011-01-12

    IPC分类号: H04B7/04

    摘要: The present invention relates to a method in which a base station transmits a downlink signal using 8 antennas may comprise the steps of: mapping a downlink signal to N (1≦N≦4) layers; precoding the signal mapped to the N layers, by using a specific precoding matrix selected from a pre-stored codebook; subjecting the precoded signal to processing for OFDM symbol generation; and transmitting OFDM symbols through 8 antennas. The pre-stored codebook may comprise precoding matrices for the respective ranks corresponding to N, the pre-stored codebook may consist of 16 codebook indexes, and a portion of the precoding matrices for high ranks in the 16 codebook indexes may be generated from the precoding matrices for low ranks.

    摘要翻译: 本发明涉及一种基站使用8个天线发送下行链路信号的方法,其可以包括以下步骤:将下行链路信号映射到N(1 @ N @ 4)层; 通过使用从预先存储的码本中选择的特定预编码矩阵来预编码映射到N层的信号; 对预编码信号进行OFDM符号生成处理; 并通过8个天线发射OFDM符号。 预存的码本可以包括对应于N的各个等级的预编码矩阵,预存的码本可以由16个码本索引组成,并且可以从预编码生成16个码本索引中的高等级的预编码矩阵的一部分 低等级的矩阵。

    Apparatus and method for data transmission using transmission diversity in SC-FDMA system
    97.
    发明授权
    Apparatus and method for data transmission using transmission diversity in SC-FDMA system 有权
    在SC-FDMA系统中使用传输分集的数据传输的装置和方法

    公开(公告)号:US08400958B2

    公开(公告)日:2013-03-19

    申请号:US13058488

    申请日:2009-06-05

    IPC分类号: H04B7/204

    摘要: Disclosed is a data transmission apparatus for providing transmission diversity in an SC-FDMA (Single Carrier-Frequency Division Multiple Access) system. The data transmission apparatus comprises: a data processor, which performs coding and modulation on an information bit to generate a data symbol; an SC-FDMA processor, which changes a weight matrix per change-cycle, precodes the data symbol for each weight matrix being changed and performs SC-FDMA modulation for generating an SC-FDMA symbol; and an RF unit, which transmits the SC-FDMA symbol. With the application of a PVS method to the SC-FDMA system, not only can transmission diversity be provided, but PAPR can also be reduced and single-carrier properties can be maintained.

    摘要翻译: 公开了一种用于在SC-FDMA(单载波 - 频分多址)系统中提供传输分集的数据传输装置。 数据传输装置包括:数据处理器,对信息位执行编码和调制以产生数据符号; 改变每个改变周期的权重矩阵的SC-FDMA处理器对每个被改变的权重矩阵的数据符号进行预编码,并执行SC-FDMA调制以产生SC-FDMA符号; 以及发送SC-FDMA符号的RF单元。 随着PVS方法的应用,SC-FDMA系统不仅可以提供传输分集,而且可以降低PAPR,保持单载波性能。

    APPARATUS AND METHOD FOR DATA TRANSMISSION IN SC-FDMA SYSTEM WITH MULTIPLE ANTENNAS
    99.
    发明申请
    APPARATUS AND METHOD FOR DATA TRANSMISSION IN SC-FDMA SYSTEM WITH MULTIPLE ANTENNAS 有权
    用于具有多个天线的SC-FDMA系统中的数据传输的装置和方法

    公开(公告)号:US20110149944A1

    公开(公告)日:2011-06-23

    申请号:US13001219

    申请日:2009-06-26

    IPC分类号: H04B7/208

    摘要: According to an aspect of the present invention, an apparatus for data transmission is provided. The apparatus includes a data processing unit generating a data symbol by performing channel coding and constellation mapping on an information bit, a single carrier-frequency division multiple access (SC-FDMA) modulator generating an SC-FDMA symbol by performing discrete Fourier transform (DFT) on the data symbol, by mapping the DFT performed-data symbol to subcarriers, and by performing inverse fast Fourier transform (IFFT) on the subcarrier mapped-DFT performed-data symbol, and a plurality of transmit antennas transmitting the SC-FDMA symbol. A single carrier-frequency division multiple access (SC-FDMA) system can effectively use frequency switched transmit diversity (FSTD) to reduce a peak-to-average power ratio (PAPR) and to maintain a single-carrier property.

    摘要翻译: 根据本发明的一个方面,提供了一种用于数据传输的装置。 该装置包括:通过对信息比特执行信道编码和星座映射来生成数据符号的数据处理单元,通过执行离散傅立叶变换(DFT)生成SC-FDMA符号的单载波频分多址(SC-FDMA)调制器 )通过将DFT执行数据符号映射到子载波,并且通过对子载波映射-DFT执行数据符号执行快速傅立叶逆变换(IFFT),以及发送SC-FDMA符号的多个发送天线 。 单载波频分多址(SC-FDMA)系统可以有效地利用频率切换发射分集(FSTD)来降低峰均功率比(PAPR),并保持单载波特性。

    METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK SIGNAL IN A MIMO WIRELESS COMMUNICATION SYSTEM
    100.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK SIGNAL IN A MIMO WIRELESS COMMUNICATION SYSTEM 有权
    用于在MIMO无线通信系统中发送下行链路信号的方法和装置

    公开(公告)号:US20110064159A1

    公开(公告)日:2011-03-17

    申请号:US12862610

    申请日:2010-08-24

    IPC分类号: H04L27/28

    摘要: A method and apparatus for transmitting a downlink signal in a multiple input multiple output (MIMO) wireless communication system is disclosed. A method for receiving a downlink signal from a base station to a user equipment in a multiple input multiple output (MIMO) system, which supports dual layer transmission based on first and second antenna ports, comprises receiving downlink control information (DCI) through a downlink control channel; and receiving downlink data through a downlink data channel, the downlink data including one or more of a first transport block and a second transport block, wherein the downlink control information includes a new data indicator (NDI) for each of the first and second transport blocks, and if the first transport block is disabled and the second transport block is enabled, the new data indicator for the first transport block indicates an antenna port through which the second transport block is received.

    摘要翻译: 公开了一种用于在多输入多输出(MIMO)无线通信系统中发送下行链路信号的方法和装置。 一种用于在支持基于第一和第二天线端口的双层传输的多输入多输出(MIMO)系统中从基站向用户设备接收下行链路信号的方法包括通过下行链路接收下行链路控制信息(DCI) 控制通道; 并且通过下行链路数据信道接收下行链路数据,所述下行链路数据包括第一传输块和第二传输块中的一个或多个,其中所述下行链路控制信息包括用于所述第一和第二传输块中的每一个的新数据指示符(NDI) ,并且如果第一传输块被禁用并且第二传输块被使能,则用于第一传输块的新数据指示符指示接收第二传输块的天线端口。