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    METHOD AND DEVICE FOR ACQUIRING PRE-CODING INFORMATION
    1.
    发明公开
    METHOD AND DEVICE FOR ACQUIRING PRE-CODING INFORMATION 审中-公开
    用于获取预编码信息的方法和设备

    公开(公告)号：EP3249839A1

    公开(公告)日：2017-11-29

    申请号：EP15878357.1

    申请日：2015-01-20

    申请人： Huawei Technologies Co. Ltd. ,  Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： WANG, Lei ,  KURRAS, Martin ,  THIELE, Lars ,  HAUSTEIN, Thomas ,  CHEN, Dageng ,  WU, Ye ,  QIAO, Deli

    IPC分类号： H04L1/06 ,  H04W24/10

    CPC分类号： H04L5/005 ,  H04B7/0482 ,  H04B7/0639 ,  H04L1/06 ,  H04L5/0023 ,  H04L5/0051 ,  H04L27/261 ,  H04W24/10

    摘要： Embodiments of the present invention provide a precoding information obtaining method and a device. The method includes: separately precoding, by a network device by using N sub-codebooks, a pilot group including K pilots to obtain N precoded pilot groups, where the sub-codebooks are subsets of a precoding codebook, the precoding codebook includes M precoding vectors, each sub-codebook includes K precoding vectors; sending, by the network device, a precoded pilot group to a terminal device in each of W RB groups; and receiving, by the network device, precoding information fed back by the terminal device for any one of W precoded pilot groups. According to the precoding information obtaining method and the device, the network device divides a precoding codebook into multiple sub-codebooks, and a quantity of precoding vectors in each sub-codebook is relatively small. Therefore, a quantity of pilot signals sent by the network device in each RB group is reduced, and pilot overheads in each RB group are reduced.

    摘要翻译： 本发明实施例提供了一种预编码信息获取方法和装置。 该方法包括：网络设备使用N个子码本对包含K个导频的导频组进行单独预编码以获得N个预编码导频组，其中，所述子码本为预编码码本的子集，所述预编码码本包括M个预编码矢量 ，每个子码本包括K个预编码向量; 所述网络设备将预编码的导频组发送给每个W RB组中的终端设备; 所述网络设备接收所述终端设备反馈的W个预编码导频组中的任意一个的预编码信息。 根据预编码信息获取方法和设备，网络设备将预编码码本划分为多个子码本，每个子码本的预编码向量数量较小。 因此减少了每个RB组中的网络设备发送的导频信号的数量，减少了每个RB组中的导频开销。

    METHOD, DEVICE AND SYSTEM FOR PROCESSING DATA
    4.
    发明公开
    METHOD, DEVICE AND SYSTEM FOR PROCESSING DATA 有权
    VERFAHREN，VORRICHTUNG UND SYSTEM ZUR VERARBEITUNG VON DATEN

    公开(公告)号：EP3079286A1

    公开(公告)日：2016-10-12

    申请号：EP13899983.4

    申请日：2013-12-26

    申请人： Huawei Technologies Co., Ltd.

    发明人： QIAO, Deli ,  WU, Ye ,  CHEN, Yan ,  WANG, Lei

    IPC分类号： H04L1/00

    CPC分类号： H04L5/0023 ,  H04L1/00 ,  H04L5/0051 ,  H04W72/042

    摘要： Embodiments of the present invention provide a data processing method, apparatus, and system, which relate to the communications field and are used to improve accuracy in channel estimation performed by a user. The method includes: receiving N data streams sent by a network-side device; determining a demodulation reference signal DMRS corresponding to each of the N data streams; grouping DMRSs corresponding to the N data streams into M groups; mapping each group of DMRSs in the M groups to corresponding resource element RE positions, and acquiring port-related information corresponding to each group of DMRSs; sending the port-related information corresponding to each group of DMRSs to a terminal device; and adding each group of DMRSs in the M groups to data streams, and sending the data streams to which the DMRSs are added to the terminal device. The embodiments of the present invention are applicable to a multi-user multiple-input multiple-output MU-MIMO scenario.

    摘要翻译： 本发明的实施例提供了一种与通信领域相关的数据处理方法，装置和系统，用于提高用户进行的信道估计的精度。 该方法包括：接收由网络侧设备发送的N个数据流; 确定与所述N个数据流中的每一个对应的解调参考信号DMRS; 将对应于N个数据流的DMRS分组成M组; 将M组中的每组DMRS映射到相应的资源元素RE位置，并获取与每组DMRS相对应的端口相关信息; 将与每组DMRS相对应的端口相关信息发送到终端设备; 并将M组中的每组DMRS添加到数据流中，并且向终端设备发送添加有DMRS的数据流。 本发明的实施例可应用于多用户多输入多输出MU-MIMO场景。

    PRECODING METHOD AND DEVICE
    5.
    发明授权
    PRECODING METHOD AND DEVICE 有权

    公开(公告)号：EP2999155B1

    公开(公告)日：2018-06-13

    申请号：EP14820594.1

    申请日：2014-07-03

    申请人： Huawei Technologies Co., Ltd.

    发明人： QIAO, Deli ,  WU, Ye

    IPC分类号： H04L1/06 ,  H04B7/04 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/02 ,  H04B7/024

    CPC分类号： H04B7/0452 ,  H04B7/024 ,  H04B7/0456

    摘要： The present invention discloses a precoding method and device. In the present invention, acquiring, by a precoding device, all scheduled users on a resource block, and selecting, within a range of all the scheduled users on the resource block, a user set used for partial interference suppression for each scheduled user on the resource block; for each scheduled user on the resource block, computing a precoding vector for a current scheduled user according to a matrix formed by channel estimations of all users in the user set used for the partial interference suppression corresponding to the current scheduled user, and precoding data of the scheduled users according to the computed precoding vector. Precoding computation complexity is reduced by using the present invention.

    PRE-CODING INFORMATION COLLECTION METHOD AND TRANSMISSION DEVICE
    6.
    发明公开
    PRE-CODING INFORMATION COLLECTION METHOD AND TRANSMISSION DEVICE 审中-公开
    预编码信息收集方法和传输设备

    公开(公告)号：EP3226436A1

    公开(公告)日：2017-10-04

    申请号：EP14908169.7

    申请日：2014-12-17

    申请人： Huawei Technologies Co., Ltd.

    发明人： QIAO, Deli ,  WU, Ye ,  CHEN, Dageng ,  LIU, Jin

    IPC分类号： H04B7/06

    摘要： Embodiments of the present invention disclose a precoding information collection method and a transmission device and relate to the communications field, so as to improve performance of a wireless communications system. A specific solution is: precoding, by a transmit side, a first pilot signal according to a first precoding matrix, and sending a precoded first pilot signal to a receive side, where the first precoding matrix is the same as a precoding matrix used for current data transmission; precoding, by the transmit side, N second pilot signals according to N second precoding matrices, and sending N precoded second pilot signals to the receive side, where N is an integer greater than or equal to 1, the second precoding matrices used for precoding the second pilot signals are different from each other, and the N second precoding matrices are different from the first precoding matrix; and receiving, by the transmit side, precoding feedback information sent by the receive side. The present invention is used in a data transmission process.

    摘要翻译： 本发明实施例公开了一种预编码信息收集方法和传输设备，涉及通信领域，以提高无线通信系统的性能。 一种具体的方案是：发射端根据第一预编码矩阵对第一导频信号进行预编码，并将预编码的第一导频信号发送给接收端，其中，第一预编码矩阵与用于当前的预编码矩阵相同 数据传输; 发送端根据N个第二预编码矩阵对N个第二导频信号进行预编码，并将N个预编码后的第二导频信号发送给接收端，其中，N为大于或等于1的整数;第二预编码矩阵， 第二导频信号彼此不同，并且N个第二预编码矩阵不同于第一预编码矩阵; 发送端接收接收端发送的预编码反馈信息。 本发明用于数据传输过程。

    DATA TRANSMISSION METHOD AND APPARATUS
    7.
    发明公开
    DATA TRANSMISSION METHOD AND APPARATUS 审中-公开
    数据传输方法和设备

    公开(公告)号：EP3197067A1

    公开(公告)日：2017-07-26

    申请号：EP14898368.7

    申请日：2014-07-31

    申请人： Huawei Technologies Co. Ltd.

    发明人： QIAO, Deli ,  WU, Ye ,  WANG, Lei

    IPC分类号： H04B7/06 ,  H04B7/04 ,  H04L5/00 ,  H04L12/26

    CPC分类号： H04B7/0617 ,  H04B7/04 ,  H04B7/06 ,  H04L5/0051 ,  H04L43/16

    摘要： Embodiments of the present invention provide a data transmission method and apparatus. A data sending method in the present invention includes: receiving uplink data or a pilot sent by user equipment by using an uplink subframe; performing beam characteristic design according to the uplink data or the pilot, and generating beam characteristic information; determining a precoding mode according to the beam characteristic information, and performing precoding processing on to-be-sent data according to the determined precoding mode, where the precoding mode includes a space-time based precoding mode or a space-frequency based precoding mode; and sending precoded to-be-sent data to the user equipment. In the embodiments of the present invention, a precoding mode can be flexibly selected according to uplink data or a pilot sent by user equipment.

    摘要翻译： 本发明的实施例提供了一种数据传输方法和装置。 本发明的数据发送方法包括：接收用户设备通过上行子帧发送的上行数据或导频; 根据所述上行数据或所述导频进行波束特征设计，并生成波束特征信息; 根据波束特征信息确定预编码模式，并根据确定的预编码模式对待发数据进行预编码处理，预编码模式包括基于时空的预编码模式或基于空频的预编码模式; 并将预编码后的待发送数据发送给用户设备。 在本发明实施例中，可以根据上行数据或用户设备发送的导频灵活选择预编码模式。

    MULTI-ANTENNA DATA TRANSMISSION METHOD, BASE STATION, USER EQUIPMENT AND SYSTEM
    9.
    发明公开
    MULTI-ANTENNA DATA TRANSMISSION METHOD, BASE STATION, USER EQUIPMENT AND SYSTEM 审中-公开
    具有多天线，基站，终端和系统数据传输过程

    公开(公告)号：EP3139509A1

    公开(公告)日：2017-03-08

    申请号：EP14891027.6

    申请日：2014-04-28

    申请人： Huawei Technologies Co., Ltd.

    发明人： WU, Ye ,  QIAO, Deli ,  WANG, Lei

    IPC分类号： H04B7/06

    CPC分类号： H04B7/0413 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0626 ,  H04L5/0051

    摘要： Embodiments of the present invention disclose a base station, including: a first channel state information acquiring module, configured to acquire channel state information of dimension-reduced channel subspace by means of level-one channel state information measurement, where the channel subspace is channel subspace obtained after dimension reduction is performed on statistical channel subspace of each to-be-scheduled user equipment; a set determining module, configured to: schedule the user equipment, and determine a set of user equipment involved in multiple-input multiple-output; a second channel state information acquiring module, configured to: perform level-two channel state information measurement on user equipment in the set of user equipment to acquire state information of a dimension-reduced real-time channel; and a data sending module, configured to: process downlink data and a user-specific demodulation reference signal by means of two-level precoding, and send processed downlink data and a processed user-specific demodulation reference signal to the user equipment in the set of user equipment. The present invention further discloses a multiple-antenna data transmission method, user equipment, and a system. By using the present invention, a system throughput is effectively increased.