Method and apparatus for information feedback and precoding
    51.
    发明授权
    Method and apparatus for information feedback and precoding 有权
    用于信息反馈和预编码的方法和装置

    公开(公告)号:US09042474B2

    公开(公告)日:2015-05-26

    申请号:US13639438

    申请日:2010-04-07

    IPC分类号: H04B7/04 H04B7/06

    摘要: Methods and apparatuses for information feedback and precoding have been provided. A method for processing communication data at a user equipment in a wireless communication system may comprise: deriving a spatial correlation matrix R of multiple transmit antennas of a base station based on an obtained downlink channel transmission matrix H; transforming a precoding codebook F according to the spatial correlation matrix R; selecting a precoding matrix Fs based on the transformed precoding codebook; and feeding back information about the spatial correlation matrix R and information about the selected precoding matrix Fs to the base station. A method for data precoding at a base station in a wireless communication system may comprise: obtaining, from a user equipment, information about a spatial correlation matrix R of multiple transmit antennas of the base station and information about a precoding matrix Fs selected by the user equipment; determining a desired precoding matrix FR,s based on the obtained information and a precoding codebook; and precoding downlink data to be transmitted to the user equipment with the desired precoding matrix FR,s.

    摘要翻译: 已经提供了用于信息反馈和预编码的方法和装置。 一种用于在无线通信系统中的用户设备处理通信数据的方法可以包括:基于获得的下行链路信道传输矩阵H导出基站的多个发射天线的空间相关矩阵R. 根据空间相关矩阵R对预编码码本F进行变换; 基于经变换的预编码码本选择预编码矩阵Fs; 并将关于空间相关矩阵R的信息和关于所选择的预编码矩阵Fs的信息反馈给基站。 在无线通信系统中的基站处的用于数据预编码的方法可以包括:从用户设备获得关于基站的多个发射天线的空间相关矩阵R的信息以及关于由用户选择的预编码矩阵F s的信息 设备; 基于获得的信息和预编码码本确定期望的预编码矩阵FR; 并用所需的预编码矩阵FR,s对要发送给用户设备的下行链路数据进行预编码。

    Transformation apparatus and method
    52.
    发明授权
    Transformation apparatus and method 有权
    变换装置及方法

    公开(公告)号:US08989292B2

    公开(公告)日:2015-03-24

    申请号:US13639580

    申请日:2010-04-07

    摘要: The present invention provides a transformation apparatus for transforming a long-term wideband channel property feedback. The transformation apparatus comprises: a first transformation unit for constructing an estimation Restimation of a long-term wideband transmit spatial correlation matrix with a long-term wideband beamforming matrix u1 as fed back from a receiver, wherein Restimation=u1u1H, wherein H indicates the conjugate transposition of a matrix; and/or a second transformation unit for directly obtaining a long-term wideband beamforming matrix or a precoding matrix by using a long-term wideband transmit spatial correlation matrix as fed back from a receiver. According to the technical solution of the present invention, a corresponding transformation method and apparatus is also provided.

    摘要翻译: 本发明提供一种用于变换长期宽带频道特性反馈的变换装置。 变换装置包括:第一变换单元,用于构建估计从接收器反馈的长期宽带发射空间相关矩阵与长期宽带波束成形矩阵u1的重新构成,其中,Restimation = u1u1H,其中H表示共轭 矩阵的转置; 和/或第二变换单元,用于通过使用从接收器反馈的长期宽带发射空间相关矩阵直接获得长期宽带波束形成矩阵或预编码矩阵。 根据本发明的技术方案,还提供了相应的变换方法和装置。

    Channel status information feedback
    53.
    发明授权
    Channel status information feedback 有权
    频道状态信息反馈

    公开(公告)号:US08792571B2

    公开(公告)日:2014-07-29

    申请号:US13639227

    申请日:2010-04-07

    申请人: Hongwei Yang Di Lv

    发明人: Hongwei Yang Di Lv

    IPC分类号: H04L27/28

    摘要: The present invention provides a method and system for channel status information feedback based on a hierarchical codebook, the method comprising steps of: generating a hierarchical codebook; configuring the generated hierarchical codebook to a transmit end and a receive end, respectively; and feeding back channel state information from the receive end to the transmit end based on the hierarchical codebook, wherein the step of generating a hierarchical codebook further comprises the following steps: i) dividing each level of codeword in a to-be-generated codebook into a plurality of segments based on a basic codebook; ii) a module configured to generate each level of codeword in a first stage, wherein the each level of codeword is selected from the basic codebook; and iii) generating each level of codeword in other stages, wherein the each level of codeword is selected a pre-provided training sample matrix. And the feeding back the channel status information from the receiving end to the transmitting end based on the hierarchical codebook further comprises using a first bit and a second bit of the feedback bits to represent a signaling for performing tree search to the hierarchical codebook.

    摘要翻译: 本发明提供了一种基于分层码本的信道状态信息反馈的方法和系统,所述方法包括以下步骤:生成分层码本; 将生成的分层码本分别配置到发送端和接收端; 并且基于分层码本将信道状态信息从接收端反馈到发送端,其中生成分层码本的步骤还包括以下步骤:i)将要生成的码本中的每个等级的码字分成 基于基本码本的多个段; ii)被配置为在第一级中生成每个级别的码字的模块,其中从所述基本码本中选择所述每个级别的码字; 以及iii)在其他阶段生成每个级别的码字,其中,每个级别的码字被选择为预先提供的训练样本矩阵。 并且基于分层码本将信道状态信息从接收端反馈到发送端还包括使用反馈比特的第一比特和第二比特来表示用于对分层码本执行树搜索的信令。

    PRECODING METHOD AND PRECODER FOR CROSS-POLARIZED ANTENNA ARRAY
    54.
    发明申请
    PRECODING METHOD AND PRECODER FOR CROSS-POLARIZED ANTENNA ARRAY 有权
    用于跨极化天线阵列的预测方法和预编码

    公开(公告)号:US20130279619A1

    公开(公告)日:2013-10-24

    申请号:US13977846

    申请日:2012-01-03

    IPC分类号: H04B7/04

    摘要: The present invention provides a precoding method for a cross-polarized antenna array, the cross-polarized antenna array comprising a first group of coplanar polarized antennas and a second group of coplanar polarized antennas, the method comprising the following steps: generating,for at least one layer of data stream,a feedback codebook comprising a plurality of code-words; receiving a selection of the codeword in the feedback codebook; determining a corresponding codeword from the feedback codebook according to the received selection; generating a precoding matrix based on the determined codeword to precode the at least one layer of data stream; wherein each codeword in the feedback codebook comprises a first coefficient portion corresponding to a first group of coplanar polarized antennas and a second coefficient portion corresponding to the second group of coplanar polarized antennas, and there is a complex scaling relation between the coefficients in the first coefficient portion and the second coefficient portion corresponding to the same layer of data stream. Correspondingly, the present invention further provides a precoder for a cross-polarized antenna array.

    摘要翻译: 本发明提供了一种交叉极化天线阵列的预编码方法,所述交叉极化天线阵列包括第一组共面极化天线和第二组共面极化天线,所述方法包括以下步骤:至少产生 一层数据流,包括多个码字的反馈码本; 在所述反馈码本中接收所述码字的选择; 根据接收到的选择从反馈码本确定相应的码字; 基于所确定的码字生成预编码矩阵以对所述至少一个数据流层进行预编码; 其中所述反馈码本中的每个码字包括对应于第一组共面极化天线的第一系数部分和对应于所述第二组共面极化天线的第二系数部分,并且所述第一系数中的系数之间存在复数的缩放关系 部分和第二系数部分对应于同一层数据流。 相应地,本发明还提供了一种用于交叉极化天线阵列的预编码器。

    METHOD AND APPARATUS FOR IMPROVING ACCURACY OF TRANSMITTING CSI VIA PUCCH
    55.
    发明申请
    METHOD AND APPARATUS FOR IMPROVING ACCURACY OF TRANSMITTING CSI VIA PUCCH 审中-公开
    用于提高发送CSI VIA PUCCH的精度的方法和装置

    公开(公告)号:US20130195064A1

    公开(公告)日:2013-08-01

    申请号:US13877625

    申请日:2011-10-06

    IPC分类号: H04W72/04

    摘要: The present invention discloses a method and apparatus for improving the accuracy of transmitting CSI via PUCCH. The method for improving the accuracy of transmission of channel status information via the physical uplink control channel comprises reducing the number of bits of other channel information transmitted via the physical uplink control channel under the condition that the payload of the physical uplink control channel remains unchanged, and utilizing the thus-saved bits to transmit the channel state information to reduce the degree of sub-sampling the channel state information and thereby improve the accuracy of transmission of the channel status information via the physical uplink control channel. According to the present invention, system performance loss can be reduced.

    摘要翻译: 本发明公开了一种用于提高通过PUCCH发送CSI的精度的方法和装置。 通过物理上行链路控制信道提高信道状态信息的传输精度的方法包括:在物理上行链路控制信道的有效载荷保持不变的条件下,减少经由物理上行链路控制信道发送的其他信道信息的比特数, 利用这样保存的比特来传送信道状态信息,以降低信道状态信息的次采样度,从而提高通过物理上行控制信道发送信道状态信息的准确性。 根据本发明,可以降低系统性能损失。

    METHOD AND APPARATUS FOR SUB-SAMPLING OF A CODEBOOK IN LTE-A SYSTEM
    56.
    发明申请
    METHOD AND APPARATUS FOR SUB-SAMPLING OF A CODEBOOK IN LTE-A SYSTEM 有权
    在LTE-A系统中对子代码进行子采样的方法和装置

    公开(公告)号:US20130188745A1

    公开(公告)日:2013-07-25

    申请号:US13877637

    申请日:2011-10-06

    IPC分类号: H04B7/04

    摘要: The embodiments of the present invention disclose a method and an apparatus for sub-sampling of a codebook in the LTE-A system where a precoding matrix W is a product of two matrices W1 and W2, i.e. W=W1W2, codebooks for W, W1 and W2 are denoted as C, C1 and C2 respectively, and r indicates a rank. The method includes sub-sampling the codebook C such that the sub-sampled codebook C has a size of equal to or less than 4 bits. In the sub-sampling, codewords evenly distributed in the codebook C are extracted, where some or all of the codewords are in a form of discrete Fourier transform (DFT) vector to be suitable for evenly linear arrays, and the other codewords are suitable for cross-polarized linear arrays.

    摘要翻译: 本发明的实施例公开了一种在LTE-A系统中对码本进行子采样的方法和装置,其中预编码矩阵W是两个矩阵W1和W2的乘积,即W = W1W2,用于W,W1的码本 W2分别表示为C,C1,C2,r表示秩。 该方法包括对码本C进行子采样,使得子采样码本C具有等于或小于4位的大小。 在子采样中,提取均匀分布在码本C中的码字,其中一些或全部码字是离散傅里叶变换(DFT)向量的形式,以适合均匀的线性阵列,其他码字适用于 交叉极化线性阵列。

    METHODS AND APPARATUSES FOR GENERATING AND FEEDING BACK HIGH RANK ADAPTIVE CODEBOOK IN MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM
    58.
    发明申请
    METHODS AND APPARATUSES FOR GENERATING AND FEEDING BACK HIGH RANK ADAPTIVE CODEBOOK IN MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM 有权
    用于在多输入多输出系统中生成和馈送高回归自适应代码的方法和装置

    公开(公告)号:US20130051487A1

    公开(公告)日:2013-02-28

    申请号:US13696427

    申请日:2010-05-06

    IPC分类号: H04B7/06

    摘要: A method and device for generating and feeding back high rank adaptive codebook in multiple input multiple output system are disclosed in the embodiments of the invention. The method for generating high rank adaptive codebook includes: using different levels of a long time channel correlation matrix to transform different row vectors in high rank basic codebook, so as to aim at the directions of different eigenvectors of the long time channel correlation matrix; and using the transformed row vectors to construct the high rank adaptive codebook. The method of the invention has well system performance gain and no any additional feedback cost.

    摘要翻译: 在本发明的实施例中公开了一种用于在多输入多输出系统中产生和反馈高秩自适应码本的方法和装置。 用于生成高秩自适应码本的方法包括:使用不同级别的长时间信道相关矩阵来变换高级基本码本中的不同行向量,以针对长时间信道相关矩阵的不同特征向量的方向; 并使用变换的行向量来构造高秩自适应码本。 本发明的方法具有良好的系统性能增益,没有任何额外的反馈成本。

    CHANNEL STATUS INFORMATION FEEDBACK
    59.
    发明申请
    CHANNEL STATUS INFORMATION FEEDBACK 有权
    频道状态信息反馈

    公开(公告)号:US20130028340A1

    公开(公告)日:2013-01-31

    申请号:US13639227

    申请日:2010-04-07

    申请人: Hongwei Yang Di Lv

    发明人: Hongwei Yang Di Lv

    IPC分类号: H04L27/28

    摘要: The present invention provides a method and system for channel status information feedback based on a hierarchical codebook, the method comprising steps of: generating a hierarchical codebook; configuring the generated hierarchical codebook to a transmit end and a receive end, respectively; and feeding back channel state information from the receive end to the transmit end based on the hierarchical codebook, wherein the step of generating a hierarchical codebook further comprises the following steps: i) dividing each level of codeword in a to-be-generated codebook into a plurality of segments based on a basic codebook; ii) a module configured to generate each level of codeword in a first stage, wherein the each level of codeword is selected from the basic codebook; and iii) generating each level of codeword in other stages, wherein the each level of codeword is selected a pre-provided training sample matrix. And the feeding back the channel status information from the receiving end to the transmitting end based on the hierarchical codebook further comprises using a first bit and a second bit of the feedback bits to represent a signaling for performing tree search to the hierarchical codebook.

    摘要翻译: 本发明提供了一种基于分层码本的信道状态信息反馈的方法和系统,所述方法包括以下步骤:生成分层码本; 将生成的分层码本分别配置到发送端和接收端; 并且基于分层码本将信道状态信息从接收端反馈到发送端,其中生成分层码本的步骤还包括以下步骤:i)将要生成的码本中的每个等级的码字分成 基于基本码本的多个段; ii)被配置为在第一级中生成每个级别的码字的模块,其中从所述基本码本中选择所述每个级别的码字; 以及iii)在其他阶段生成每个级别的码字,其中,每个级别的码字被选择为预先提供的训练样本矩阵。 并且基于分层码本将信道状态信息从接收端反馈到发送端还包括使用反馈比特的第一比特和第二比特来表示用于对分层码本执行树搜索的信令。

    METHOD AND APPARATUS FOR PROCESSING DOWNLINK COMMUNICATION AND CORRESPONDING ASSISTING METHOD AND APPARATUS
    60.
    发明申请
    METHOD AND APPARATUS FOR PROCESSING DOWNLINK COMMUNICATION AND CORRESPONDING ASSISTING METHOD AND APPARATUS 有权
    用于处理下行链路通信和相关辅助方法和设备的方法和装置

    公开(公告)号:US20120214500A1

    公开(公告)日:2012-08-23

    申请号:US13505930

    申请日:2009-11-04

    IPC分类号: H04W72/04

    摘要: The invention provides a method and apparatus for processing downlink communication and a corresponding assisting method and apparatus. According to an embodiment of the invention, there is provided a method for assisting a base station in processing downlink communication in a user equipment, which includes the steps of: estimating a downlink channel between the base station and the user equipment; determining a spatial correlation matrix between the base station and the user equipment according to the result of estimating the downlink channel; determining at least one pre-coding vector among a plurality of pre-stored pre-coding vectors based upon the spatial correlation matrix; and notifying the base station about the determined at least one pre-coding vector and spatial correlation matrix. The invention improves the performance of a system, improves the average throughput and the throughput of an edge user of the multi-user MIMO system and has a wider applicability scope then the original codebook and feedback mechanism.

    摘要翻译: 本发明提供了一种用于处理下行链路通信的方法和装置以及相应的辅助方法和装置。 根据本发明的实施例,提供了一种用于辅助基站处理用户设备中的下行链路通信的方法,包括以下步骤:估计基站与用户设备之间的下行链路信道; 根据估计下行链路信道的结果,确定基站与用户设备之间的空间相关矩阵; 基于所述空间相关矩阵,确定多个预先存储的预编码矢量中的至少一个预编码矢量; 以及向基站通知所确定的至少一个预编码向量和空间相关矩阵。 本发明改进了系统的性能,提高了多用户MIMO系统的边缘用户的平均吞吐量和吞吐量,并具有更广泛的应用范围,然后是原始码本和反馈机制。