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    • 43. 发明申请
    • METHOD FOR FEEDING BACKCHANNEL STATE INFORMATION, USER EQUIPMENT, AND BASE STATION
    • 用于提供反向信道状态信息,用户设备和基站的方法
    • US20150304008A1
    • 2015-10-22
    • US14753490
    • 2015-06-29
    • Huawei Technologies Co., Ltd.
    • Jianguo WangYongxing ZhouLeiming Zhang
    • H04B7/06
    • H04B7/0626G06F17/16H04B7/0413H04B7/0634H04B7/0639H04N19/124
    • Embodiments of the present invention provide a method for feeding back channel state information, a user equipment, and a base station, to improve feedback precision of channel state information. The method includes: receiving a reference signal sent by a base station; selecting a precoding matrix W from a codebook according to the reference signal, where a column vector of the precoding matrix W may be expressed as α[v ejφv]T, v=[1 ejθ]; and sending a precoding matrix indicator PMI to the base station, where the PMI is corresponding to the selected precoding matrix W. The present invention may further improve quantization precision and achieve balance between overheads and the quantization precision. The base station performs precoding on a sent signal according to a fed back precoding matrix indicator, which can improve precoding precision, thereby improving a data transmission rate and system throughput.
    • 本发明的实施例提供了一种用于反馈信道状态信息,用户设备和基站的方法,以提高信道状态信息的反馈精度。 该方法包括:接收由基站发送的参考信号; 根据参考信号从码本中选择预编码矩阵W,其中预编码矩阵W的列向量可以表示为α[v ej&phgr; v] T,v = [1 ej&thetas;]; 并向基站发送预编码矩阵指示符PMI,其中PMI对应于所选择的预编码矩阵W.本发明可以进一步提高量化精度并实现开销和量化精度之间的平衡。 基站根据反馈预编码矩阵指示符对发送的信号进行预编码,这可以提高预编码精度,从而提高数据传输速率和系统吞吐量。
    • 46. 发明授权
    • Method and apparatus for acquiring a precoding matrix indicator and a precoding matrix
    • 用于获取预编码矩阵指示符和预编码矩阵的方法和装置
    • US09054754B2
    • 2015-06-09
    • US14340971
    • 2014-07-25
    • HUAWEI TECHNOLOGIES CO., LTD.
    • Jianguo WangYongxing Zhou
    • H04L27/00H04B7/04H04L25/03H04B7/06
    • H04B7/0456H04B7/0465H04B7/0469H04B7/0478H04B7/0639H04B7/0641H04L25/03923H04L25/03936
    • In the field of communication technologies, a method and an apparatus for acquiring a Precoding Matrix Indicator (PMI) and a Precoding Matrix (PM) are provided. The method includes: acquiring a reference PMI and a differential PMI according to a first non-differential codebook and a first diagonal differential codebook, where codewords included in the first diagonal differential codebook form a diagonal matrix. The apparatus includes a PMI acquiring module. Acquiring a reference PMI and a differential PMI according to a non-differential codebook and a diagonal differential codebook can reduce the feedback overhead or improve the feedback precision; and the fact that codewords included in the diagonal differential codebook form a diagonal matrix can maintain amplitude characteristics (for example, a constant modulus characteristic, and a finite character set constraint characteristic) of elements of the non-differential codebook or facilitate power distribution among antennas.
    • 在通信技术领域中,提供了一种用于获取预编码矩阵指示符(PMI)和预编码矩阵(PM)的方法和装置。 该方法包括:根据第一非差分码本和第一对角差分码本获取参考PMI和差分PMI,其中包括在第一对角差分码本中的码字形成对角矩阵。 该装置包括PMI获取模块。 根据非差分码本和对角差分码本获取参考PMI和差分PMI可以减少反馈开销或提高反馈精度; 并且包括在对角差分码本中的码字形成对角线矩阵的事实可以保持非差分码本的元素的幅度特性(例如,恒定模量特性和有限字符集约束特性)或促进天线之间的功率分配 。
    • 47. 发明申请
    • METHOD, USER EQUIPMENT AND BASE STATION FOR DETERMINING PRECODING MATRIX INDICATOR
    • 方法,用于确定基准矩阵指标的用户设备和基站
    • US20150110215A1
    • 2015-04-23
    • US14588755
    • 2015-01-02
    • Huawei Technologies Co., Ltd.
    • Jianguo WangYongxing Zhou
    • H04B7/04
    • H04B7/0465H04B7/0478H04L1/06H04W72/042H04W72/046
    • The present disclosure discloses a method, a user equipment and a base station for determining a PMI. The method includes: receiving a reference signal set sent by a base station; based on the reference signal set, selecting a precoding matrix from a codebook, the codebook at least including a non-constant modulus precoding matrix, the non-constant modulus precoding matrix at least including a non-constant modulus column vector, amplitude values of at least two elements of the non-constant modulus column vector forming a symmetrical sequence; and sending a PMI to the base station, the PMI corresponding to the selected precoding matrix. According to the method, the user equipment and the base station for determining PMI, because the non-constant modulus precoding matrix included in the adopted codebook can adjust the shape of a beam, antennas may focus power on a hotspot region, and thus a load balance may be effectively realized.
    • 本公开公开了一种用于确定PMI的方法,用户设备和基站。 该方法包括:接收由基站发送的参考信号集; 基于所述参考信号集合,从码本中选择预编码矩阵,所述码本至少包括非常数模数预编码矩阵,所述非常数模数预编码矩阵至少包括非恒模列列向量, 形成对称序列的非恒模列向量的至少两个元素; 以及向所述基站发送PMI,所述PMI与所选择的预编码矩阵相对应。 根据该方法,用于确定PMI的用户设备和基站,由于采用的码本中包含的非恒定模数预编码矩阵可以调整波束的形状,所以天线可将焦点集中在热点区域上,从而负载 平衡可以有效地实现。
    • 50. 发明申请
    • METHOD, APPARATUS, AND SYSTEM FOR COMP RETRANSMISSION
    • 方法,装置和系统恢复
    • US20140098770A1
    • 2014-04-10
    • US14103215
    • 2013-12-11
    • HUAWEI TECHNOLOGIES CO., LTD.
    • Mingyu ZhouLiang XiaXiaotao RenYongxing Zhou
    • H04W72/08H04L12/761
    • H04W72/08H04B7/024H04B7/0413H04L1/1887H04L45/16H04L2001/0092H04W28/04H04W72/12
    • The present invention provides a method, an apparatus, and a system for CoMP retransmission. The method includes: sending downlink control signaling to a user equipment UE, so that the UE receives, according to the downlink control signaling, an initially transmitted signal sent by a serving transmission point and a cooperative transmission point by joint processing mode; receiving first NAK information corresponding to the initially transmitted signal and returned by the UE, and sending a retransmitted signal corresponding to the initially transmitted signal to the UE according to the first NAK information, where the initially transmitted signal also corresponds to second NAK information sent by the UE to the cooperative transmission point, where the second NAK information is used to instruct the cooperative transmission point to, when the serving transmission point sends the retransmitted signal to the UE, reduce interference to the UE with scheduling.
    • 本发明提供了一种用于CoMP重传的方法,装置和系统。 该方法包括:向用户设备UE发送下行控制信令,使得UE根据下行控制信令,通过联合处理方式接收由服务传输点和协作传输点发送的初始发送信号; 接收对应于初始发送信号并由UE返回的第一NAK信息,并根据第一NAK信息向UE发送对应于最初发送信号的重发信号,其中初始发送的信号也对应于由第一NAK信息发送的第二NAK信息 UE到合作传输点,其中第二NAK信息用于指示协作传输点,当服务传输点向UE发送重传的信号时,通过调度来减少对UE的干扰。