公开(公告)号：US09608773B2

公开(公告)日：2017-03-28

申请号：US15274156

申请日：2016-09-23

Applicant: Apple Inc.

Inventor： Robert Novak ,  Hosein Nikopourdeilami ,  Mo-Han Fong ,  Sophie Vrzic

IPC: H04L1/02 ,  H04L1/06 ,  H04L5/00 ,  H04L1/18

CPC classification number: H04L1/0668 ,  H04B7/0473 ,  H04B7/0667 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0067 ,  H04L1/0071 ,  H04L1/0643 ,  H04L1/1812 ,  H04L1/1816 ,  H04L1/1893 ,  H04L5/0026 ,  H04L27/2628

Abstract: A method for transmitting data in a multiple-input-multiple-output space-time coded communication using a mapping table mapping a plurality of symbols defining the communication to respective antennae from amongst a plurality of transmission antennae and to at least one other transmission resource. The mapping table may comprise Alamouti-coded primary segments and may also comprise secondary segments, comprising primary segments. The primary segments in the secondary segments may be defined in accordance to an to Alamouti based code pattern applied at the segment level to define a segment-level Alamouti based code.

公开(公告)号：US09531452B2

公开(公告)日：2016-12-27

申请号：US14721357

申请日：2015-05-26

Applicant: Corning Optical Communications LLC

Inventor： Jacob George ,  Anthony Ng'Oma ,  Rakesh Sambaraju

IPC: H04B1/02 ,  H04L1/02 ,  H04B7/04 ,  H04B7/02

CPC classification number: H04B7/0413 ,  H04B7/024 ,  H04B7/026 ,  H04L43/16 ,  H04W72/085

Abstract: Hybrid intra-cell/inter-cell remote unit antenna bonding in multiple-input, multiple-output (MIMO) distributed antenna systems (DASs), and related components, systems, and methods. The MIMO DASs are capable of supporting distributed MIMO communications with client devices. To provide enhanced MIMO coverage areas, hybrid intra-cell/inter-cell remote unit antenna bonding is employed. For example, if a client device has acceptable MIMO communications signal quality with MIMO antennas within a single remote unit, intra-cell bonding of the MIMO antennas can be employed to provide MIMO coverage for MIMO communications, which may avoid power imbalance issues that would result with inter-cell bonded MIMO antennas. However, if a client device has acceptable MIMO communications signal quality with MIMO antennas in a separate, neighboring remote unit(s), inter-cell bonding of the MIMO antennas can be employed to provide MIMO coverage for MIMO communications.

Abstract translation: 多输入多输出（MIMO）分布式天线系统（DAS）中的混合小区内/小区间单元天线绑定以及相关组件，系统和方法。 MIMO DAS能够支持与客户端设备的分布式MIMO通信。 为了提供增强的MIMO覆盖区域，采用混合小区内/小区间单元天线接合。 例如，如果客户端设备在单个远程单元内具有MIMO天线可接受的MIMO通信信号质量，则可以采用MIMO天线的小区内绑定来提供用于MIMO通信的MIMO覆盖，这可以避免将导致的功率不平衡问题 具有小区间绑定的MIMO天线。 然而，如果客户设备在单独的相邻远程单元中具有MIMO天线可接受的MIMO通信信号质量，则可以采用MIMO天线的小区间绑定来为MIMO通信提供MIMO覆盖。

公开(公告)号：US09438366B2

公开(公告)日：2016-09-06

申请号：US13020593

申请日：2011-02-03

Applicant: Tao Luo ,  Juan Montojo ,  Wanshi Chen

Inventor： Tao Luo ,  Juan Montojo ,  Wanshi Chen

IPC: H04B15/00 ,  H04L1/02 ,  H04W72/04 ,  H04J11/00 ,  H04W48/20 ,  H04B1/7103 ,  H04W48/12

CPC classification number: H04J11/0056 ,  H04B1/7103 ,  H04J11/0069 ,  H04W48/12 ,  H04W48/20

Abstract: A user equipment (UE) begins to access a heterogeneous network by obtaining synchronization parameters from system signals transmitted by a weaker one of a number of neighboring cells. After synchronizing with the network, the UE obtains resource scheduling information for the weaker cell. The resource scheduling information indicates at least one resource used by the weaker cell. The UE may then cancel the stronger cells of the neighboring cell. The resource scheduling information allows the UE to identify broadcasted system blocks for the weaker cell from which it may decode and retrieve control information used to complete access to the network.

Abstract translation: 用户设备（UE）通过从由多个相邻小区中较弱的一个发射的系统信号获得同步参数来开始接入异构网络。 在与网络同步之后，UE获取较弱小区的资源调度信息。 资源调度信息表示较弱小区使用的至少一个资源。 然后，UE可以取消相邻小区的更强的小区。 资源调度信息允许UE识别用于其可以解码的较弱小区的广播系统块，并且检索用于完成对该网络的接入的控制信息。

公开(公告)号：US09426670B2

公开(公告)日：2016-08-23

申请号：US13847709

申请日：2013-03-20

Applicant: QUALCOMM Incorporated

Inventor： Ravi Palanki ,  Alexei Y. Gorokhov ,  Naga Bhushan

IPC: H04B17/00 ,  H04W24/00 ,  H04L1/02 ,  H04W72/08 ,  H04J11/00 ,  H04B17/24 ,  H04B17/345 ,  H04L1/00 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04W24/00 ,  H04B17/24 ,  H04B17/345 ,  H04J11/0053 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/02 ,  H04L5/0023 ,  H04L5/0035 ,  H04L2001/0092 ,  H04W72/0426 ,  H04W72/085 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

Abstract: Systems and methodologies are described herein that facilitate interference measurement and reporting in a network multiple-in-multiple-out (N-MIMO) communication system. As described herein, a network device can measure and report interference corresponding to network nodes outside a designated set of nodes that can cooperatively serve the device. Respective interference reports can additionally identify dominant interfering nodes, correlation between transmit antennas of respective nodes, or the like. Subsequently, respective interference reports can be combined with per-node channel information to manage coordination and scheduling across respective network nodes. As further described herein, interference from a network node can be measured by observing reference and/or synchronization signals from the network node. To aid such observation, respective non-interfering network nodes can define null pilot intervals in which transmission is silenced or otherwise reduced. As additionally described herein, loading information broadcasted by respective interfering network nodes can be identified and utilized in connection with interference calculation.

公开(公告)号：US09407340B2

公开(公告)日：2016-08-02

申请号：US14199213

申请日：2014-03-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyeong Yeon Kim ,  Ki Taek Bae ,  Ho Yang

IPC: H04L1/02 ,  H04B7/04 ,  H04B7/06 ,  H04L25/03

CPC classification number: H04B7/0417 ,  H04B7/0663 ,  H04L25/03891

Abstract: Provided is a method and apparatus for lattice reduction with reduced computational complexity. The apparatus and method include calculating an R matrix using sorted QR decomposition, and conducting an R-value test using an R-value based on diagonal elements of the R matrix and a threshold value. The R matrix is an upper triangular matrix. The apparatus and method further execute a loop comprising a size reduction and a conditional update of a basis vector corresponding to a column element of the R matrix in response to the R-value being greater than or equal to the threshold value. The apparatus and method conduct another R-value test based on the R matrix comprising the updated basis vector in response to the basis vector being updated.

Abstract translation: 提供了一种降低计算复杂度的晶格简化方法和装置。 该装置和方法包括使用排序的QR分解来计算R矩阵，并且使用基于R矩阵的对角元素和阈值的R值进行R值测试。 R矩阵是上三角矩阵。 所述装置和方法还响应于所述R值大于或等于所述阈值执行包括对应于所述R矩阵的列元素的基矢量的大小减小和条件更新的循环。 该装置和方法响应于正在更新的基本向量，基于包括更新的基本向量的R矩阵进行另一R值测试。

公开(公告)号：US09401826B2

公开(公告)日：2016-07-26

申请号：US13755776

申请日：2013-01-31

Applicant: Sony Corporation

Inventor： Ben Eitel ,  Julian Zinsser ,  Rana Ahmed Salem ,  Stefan Uhlich

IPC: H04B7/10 ,  H04L1/02 ,  H04L25/02

CPC classification number: H04L25/0238 ,  H04L25/0206 ,  H04L25/025

Abstract: A receiver apparatus receives a transmit signal through a plurality of transmission channels, wherein each transmission channel is described by its channel vector. A sparseness evaluation unit (127) may obtain a sparseness measure containing sparseness information for previously estimated frequency-domain channel vectors. From the plurality of receive signals, an estimator unit (120) estimates updated channel vectors for the transmission channels by applying an iterative blind channel estimation algorithm that may consider a change of the sparseness measure, out-of-band energy information and/or signal-to-noise information and cross-relations between pairs of receive signals. A combining unit (130) may combine the receive signals on the basis of combining coefficients derived from the estimated channel impulse responses for a pre-selected diversity combining scheme to obtain a combined receive signal representing an estimation of the transmit signal. The receiver apparatus employs an improved blind channel estimation approach.

Abstract translation: 接收机装置通过多个传输信道接收发射信号，其中每个传输信道由其信道向量描述。 稀疏性评估单元（127）可以获得包含用于先前估计的频域信道向量的稀疏信息的稀疏度测度。 从多个接收信号中，估计器单元（120）通过应用迭代盲信道估计算法来估计传输信道的更新信道向量，所述迭代盲信道估计算法可以考虑稀疏度测量，带外能量信息和/或信号的改变 对噪声信息和接收信号对之间的交叉关系。 组合单元（130）可以基于从用于预选分集合并方案的估计信道脉冲响应导出的组合系数来组合接收信号，以获得表示发射信号估计的组合接收信号。 接收机装置采用改进的盲信道估计方法。

公开(公告)号：US09363003B2

公开(公告)日：2016-06-07

申请号：US14430886

申请日：2013-11-05

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Koichi Ishihara ,  Yasushi Takatori ,  Masato Mizoguchi ,  Yusuke Asai ,  Tomoki Murakami

IPC: H04L1/02 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04B7/0626 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/063 ,  H04B7/0697

Abstract: A transmitter that has a plurality of antenna elements and executes spatially multiplexed transmission of data to a receiver via the antenna elements, where the data is weighted utilizing a transmission weight. Channel state information, which indicates propagation characteristics between the antenna elements and an antenna element of the receiver, is obtained or estimated. When the channel state information has been updated, an updated transmission weight is computed based on the previous channel state information before the updating thereof and/or the updated channel state information, and the previous transmission weight before the updating thereof, which was computed for the previous channel state information.

Abstract translation: 具有多个天线元件并且经由天线元件执行数据到接收机的空间复用传输的发射机，其中利用传输权重对数据进行加权。 指示天线元件与接收器的天线元件之间的传播特性的通道状态信息。 当信道状态信息已被更新时，基于在其更新之前的先前信道状态信息和/或更新的信道状态信息以及在更新之前的先前传输权重计算更新的传输权重， 以前的频道状态信息。

公开(公告)号：US09344164B2

公开(公告)日：2016-05-17

申请号：US14424035

申请日：2013-08-27

Applicant: China Academy of Telecommunications Technology

Inventor： Meifang Jing ,  Xin Su ,  Rakesh Tamrakar

IPC: H04L1/02 ,  H04L27/28 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/065 ,  H04B7/0652

Abstract: The embodiments of the disclosure relate to the technical field of wireless communications, and particularly relate to a method, a system and a device for feeding back and receiving a Pre-coding Matrix Indicator (PMI), which is used for feeding back a vertical dimension PMI. The method for feeding back the PMI provided by the embodiments of the disclosure comprises: confirming the PMI needed to be fed back, wherein the PMI comprises a horizontal dimension PMI and a vertical dimension PMI, or a PMI combined by horizontal dimension and vertical dimension (801); feeding back the confirmed PMI in a non periodic Channel State Information (CSI) feedback mode or a periodic CSI feedback mode (802). Since the capability of feeding back the vertical dimension PMI, dynamic 3D beam shaping technology can be implemented and the throughput of the user equipments in the edge of cell and the average throughput can be improved.

Abstract translation: 本公开的实施例涉及无线通信的技术领域，特别涉及用于反馈和接收预编码矩阵指示符（PMI）的方法，系统和设备，其用于反馈垂直维度 PMI。 用于反馈由本公开的实施例提供的PMI的方法包括：确认需要反馈的PMI，其中PMI包括水平尺寸PMI和垂直维度PMI或由水平尺寸和垂直尺寸组合的PMI（ 801）; 在非周期性信道状态信息（CSI）反馈模式或周期性CSI反馈模式（802）中反馈确认的PMI。 由于反馈垂直尺寸PMI的能力，可以实现动态3D波束整形技术，可以提高单元边缘用户设备的吞吐量和平均吞吐量。

公开(公告)号：US09306644B2

公开(公告)日：2016-04-05

申请号：US14114370

申请日：2012-02-13

Applicant: Johan Bergman ,  Johan Hultell

Inventor： Johan Bergman ,  Johan Hultell

IPC: H04B7/02 ,  H04L1/02 ,  H04B7/04 ,  H04B7/06 ,  H04W52/54

CPC classification number: H04B7/0456 ,  H04B7/0404 ,  H04B7/0421 ,  H04B7/0634 ,  H04B7/0689 ,  H04W52/545

Abstract: The disclosure relates to controlling uplink transmissions according to closed loop multi-antenna techniques such as closed loop uplink transmit diversity and uplink multiple-input multiple-output (MIMO). An exemplary method for use in a user equipment (81) configured for multi-antenna transmissions comprises a step of estimating (62) reception quality of a physical channel carrying pre-coding weight information to the user equipment (61). The method further comprises a step of determining (64) that the reception quality of the physical channel is inferior if the estimated reception quality is below a threshold and otherwise considering (65) the reception quality of the physical channel to be sufficient, in a further step the UE (61) applies (52) the pre-coding weight information received on the physical channel for uplink transmission only if the reception quality of the physical channel is considered to be sufficient.

Abstract translation: 本公开涉及根据诸如闭环上行链路发射分集和上行链路多输入多输出（MIMO）的闭环多天线技术来控制上行链路传输。 在用于多天线传输的用户设备（81）中使用的示例性方法包括估计（62）携带预编码权重信息的物理信道的接收质量到用户设备（61）的步骤。 该方法还包括以下步骤：（64）如果所估计的接收质量低于阈值，则物理信道的接收质量较差，或者进一步考虑（65）物理信道的接收质量足够的步骤 如果物理信道的接收质量被认为是足够的，则UE（61）应用（52）应用（52）在物理信道上接收的用于上行链路传输的预编码权重信息。

公开(公告)号：US09287943B2

公开(公告)日：2016-03-15

申请号：US14160818

申请日：2014-01-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Byung Moo Lee ,  Byung Chang Kang ,  Jong Ho Bang ,  Nam Jeong Lee ,  Jin Hyeock Choi

IPC: H04B7/02 ,  H04L1/02 ,  H04B7/04 ,  H04L5/00

CPC classification number: H04B7/0426 ,  H04B7/0452 ,  H04L5/0007 ,  H04L27/2623

Abstract: Methods and apparatus for reducing a peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal in an MIMO-OFDM communication system is provided, in which the method for reducing the PAPR of the OFDM signal may identify interference generated in an MIMO communication system, and adjust a clipping ratio (CR) for an effect of a clipping distortion to be less than an effect of interference.

Abstract translation: 提供了一种用于降低MIMO-OFDM通信系统中的正交频分复用（OFDM）信号的峰均功率比（PAPR）的方法和装置，其中减少OFDM信号的PAPR的方法可以识别 在MIMO通信系统中产生的干扰，以及用于削波失真的影响的削波比（CR）小于干扰的影响。