公开(公告)号：US09504047B2

公开(公告)日：2016-11-22

申请号：US13608538

申请日：2012-09-10

申请人： Ki-Il Kim ,  Duck-Dong Hwang ,  Clerckx Bruno ,  Tae-Joon Kim ,  David J. Love

发明人： Ki-Il Kim ,  Duck-Dong Hwang ,  Clerckx Bruno ,  Tae-Joon Kim ,  David J. Love

IPC分类号： H04W72/08 ,  H04B7/04 ,  H04B7/06

CPC分类号： H04W72/082 ,  H04B7/0452 ,  H04B7/0606 ,  H04B7/0617

摘要： An apparatus and a method for opportunistic user scheduling of two-cell multiple user Multiple Input Multiple Output (MIMO) by a base station, the method comprising: broadcasting signals through random beams to users; and receiving Channel Quality Information (CQI) from best K user set. The CQI is calculated based on all possible combinations of transmit beamforming vectors.

摘要翻译： 一种用于基站的双小区多用户多输入多输出（MIMO）的机会用户调度的装置和方法，所述方法包括：通过随机波束向用户广播信号; 并从最佳K用户集接收信道质量信息（CQI）。 基于发送波束形成向量的所有可能组合来计算CQI。

公开(公告)号：US20140003274A1

公开(公告)日：2014-01-02

申请号：US14005456

申请日：2012-03-19

申请人： Bruno Clerckx ,  Duck Dong Hwang ,  Chun Kin Au Yeung ,  David James Love ,  Tae Joon Kim

发明人： Bruno Clerckx ,  Duck Dong Hwang ,  Chun Kin Au Yeung ,  David James Love ,  Tae Joon Kim

IPC分类号： H04J11/00

CPC分类号： H04J11/005 ,  H04B7/0456 ,  H04B7/0617 ,  H04J11/0033 ,  H04L25/0204 ,  H04L25/0244 ,  H04L25/03955 ,  H04L25/0398

摘要： The present invention relates to a method and apparatus for interference alignment in a wireless communication system. A method in which a terminal aligns interferences in a wireless communication system, which includes a first base station governing a first cell and a second base station governing a second cell, comprises: a step in which the terminal measures a serving channel from the first base station which is a serving base station and an interference channel from the second base station; a step of transmitting null space information orthogonal to the interference channel to the first base station; a step of measuring channels from the first base station and the second base station to which an inference alignment plane generated based on the null space information is applied, and generating a receiving filter; and a step of transmitting, to the first base station, the interference alignment plane, the receiving filter, and effective channel measurement value based on the channel from the first base station.

摘要翻译： 本发明涉及无线通信系统中的干扰对准方法和装置。 一种终端对准无线通信系统中的干扰的方法，该无线通信系统包括控制第一小区的第一基站和管理第二小区的第二基站，包括：终端从第一基站测量服务信道的步骤 作为服务基站的站和来自第二基站的干扰信道; 向所述第一基站发送与所述干扰信道正交的空间信息的步骤; 测量来自第一基站和第二基站的信道的步骤，第一基站和第二基站根据零空间信息生成推理对准平面，并产生接收滤波器; 以及基于来自第一基站的信道向第一基站发送干扰对准平面，接收滤波器和有效信道测量值的步骤。

公开(公告)号：US20130039445A1

公开(公告)日：2013-02-14

申请号：US13572414

申请日：2012-08-10

申请人： Duck-Dong Hwang

发明人： Duck-Dong Hwang

IPC分类号： H04L27/00

CPC分类号： H04B7/0617 ,  H01Q25/00 ,  H04B7/0619 ,  H04B7/086

摘要： A method and an apparatus determine an analog beam in a digital/analog hybrid beam-forming system. In a method of a reception end, for determining an analog beam in a hybrid beam-forming system, channel information regarding a transmission end is measured. At least one of an analog transmission beam-forming vector and a reception beam-forming vector is determined depending on the measured channel and a digital beam-forming technique in use. Information of the determined transmission beam-forming vector is fed back to the transmission end.

摘要翻译： 一种方法和装置在数字/模拟混合波束形成系统中确定模拟波束。 在接收端的方法中，为了确定混合波束成形系统中的模拟波束，测量关于发送端的信道信息。 根据使用的测量通道和数字波束形成技术来确定模拟传输波束形成向量和接收波束形成向量中的至少一个。 所确定的传输波束形成向量的信息被反馈到传输端。

公开(公告)号：US07979076B2

公开(公告)日：2011-07-12

申请号：US11593301

申请日：2006-11-06

申请人： Junhong Hui ,  Duck-Dong Hwang ,  Jae-Myeong Kim ,  Sang-Jo Yoo ,  Kwon-Moon No ,  Jae-Hak Chung

发明人： Junhong Hui ,  Duck-Dong Hwang ,  Jae-Myeong Kim ,  Sang-Jo Yoo ,  Kwon-Moon No ,  Jae-Hak Chung

IPC分类号： H04W74/00 ,  H04W24/00 ,  H04W4/00 ,  H04M3/00 ,  H04B7/00 ,  H04L5/22

CPC分类号： H04W16/10 ,  H04W92/20

摘要： A resource management method in a Cognitive Radio communication system where at least two Base Stations of heterogeneous networks provide a connection service to Mobile Stations within their service areas is provided. In the method, at least one BS having candidate resources broadcasts its candidate resource information on the downlink of a system information channel. At least one BS lacking in resources searches the downlinks of system information channels from neighbor heterogeneous networks, selects an offer BS among the BSs having candidate resources, and rents resources from the selected offer BS by negotiations.

摘要翻译： 认知无线电通信系统中的资源管理方法，其中提供异构网络的至少两个基站向其服务区域内的移动站提供连接服务。 在该方法中，具有候选资源的至少一个BS在系统信息信道的下行链路上广播其候选资源信息。 缺少资源的至少一个BS从相邻异构网络中搜索系统信息信道的下行链路，在具有候选资源的BS中选择一个报价BS，并通过协商从所选择的报价BS中租出资源。

公开(公告)号：US20100048232A1

公开(公告)日：2010-02-25

申请号：US12470954

申请日：2009-05-22

申请人： Duck Dong Hwang ,  Ki Il Kim

发明人： Duck Dong Hwang ,  Ki Il Kim

IPC分类号： H04B15/00 ,  H04M1/00

CPC分类号： H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03802

摘要： A base station apparatus including a receiving unit to receive, from a terminal, quantized channel state information with respect to a radio channel from a plurality of transmission antennas of the base station apparatus to a plurality of receiving antennas of the terminal. A control unit to determine a control ratio of interference signal to noise with respect to the radio channel based on the channel state information. A precoding matrix computing unit to compute a precoding matrix based on the control ratio of interference signal to noise and a transmission unit to transmit data to one or more of the connected terminals using the precoding matrix.

摘要翻译： 一种基站装置，包括：接收单元，从终端接收关于从所述基站装置的多个发送天线到所述终端的多个接收天线的无线信道的量化信道状态信息。 一种控制单元，用于基于信道状态信息来确定相对于无线信道的干扰信号与噪声的控制比。 一种预编码矩阵计算单元，用于基于干扰信号与噪声的控制比来计算预编码矩阵;以及发送单元，用于使用所述预编码矩阵向连接的一个或多个终端发送数据。

公开(公告)号：US20100041406A1

公开(公告)日：2010-02-18

申请号：US12190667

申请日：2008-08-13

申请人： Jun Mo KIM ,  Chang Soon Park ,  Duck Dong Hwang ,  Sung Jin Kim ,  Pramod Viswanath

发明人： Jun Mo KIM ,  Chang Soon Park ,  Duck Dong Hwang ,  Sung Jin Kim ,  Pramod Viswanath

IPC分类号： H04Q7/20 ,  H04M1/00

CPC分类号： H04W72/046 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0695 ,  H04L5/0037 ,  H04L5/0044 ,  H04W16/28 ,  H04W72/087 ,  H04W72/121

摘要： A communication system for supporting a primary user and a secondary user is provided. A base station of a communication system, includes a scheduler to group at least one primary user and at least one secondary user corresponding to each of the at least one primary user according to characteristics of services desired by users, a superposition coding unit to perform superposition coding for primary data associated with the at least one primary user and secondary data associated with the at least one secondary user to generate a transmission data stream, and a beamformer to perform beamforming for the transmission data stream.

摘要翻译： 提供了用于支持主用户和次用户的通信系统。 通信系统的基站包括调度器，用于根据用户期望的业务的特性对至少一个主用户和对应于至少一个主用户中的每一个的至少一个次用户进行分组，叠加编码单元执行叠加 编码与所述至少一个主用户相关联的主要数据和与所述至少一个次要用户相关联的次要数据以生成传输数据流;以及波束形成器，用于为所述传输数据流执行波束成形。

公开(公告)号：US20070286302A1

公开(公告)日：2007-12-13

申请号：US11712008

申请日：2007-02-28

申请人： Duck-Dong Hwang ,  Junhong Hui

发明人： Duck-Dong Hwang ,  Junhong Hui

IPC分类号： H04B7/02

CPC分类号： H04B7/0617 ,  H04B7/0697 ,  H04L27/2634 ,  H04L27/265

摘要： A pre-coding method for improving diversity gain in an Orthogonal Frequency Division Multiplexing (OFDM) system and a transmission apparatus and method are disclosed. The transmission method includes converting an input transmission signal into parallel signals, pre-coding the parallel signals with a predetermined frequency offset, performing Inverse Discrete Fourier Transform (IDFT) on the pre-coded signals, and up-converting the IDFT signals and outputting the up-converted signals to a wireless network. By performing pre-coding on a transmission signal with a frequency offset in an OFDM system, diversity gain can be improved.

摘要翻译： 公开了一种用于改善正交频分复用（OFDM）系统中的分集增益的预编码方法和传输装置和方法。 传输方法包括将输入的传输信号转换为并行信号，以预定的频率偏移量对并行信号进行预编码，对预编码的信号执行反离散傅里叶变换（IDFT），并对IDFT信号进行上变换，并输出 上变频信号到无线网络。 通过在OFDM系统中对具有频率偏移的发送信号进行预编码，可以提高分集增益。

公开(公告)号：US20070211816A1

公开(公告)日：2007-09-13

申请号：US11712082

申请日：2007-02-28

申请人： Duck-Dong Hwang

发明人： Duck-Dong Hwang

IPC分类号： H04L1/02

CPC分类号： H04L1/0631 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0894 ,  H04L1/0048 ,  H04L1/0618 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/03343

摘要： An apparatus and method for transmitting and receiving a data stream in a multi-antenna system, in which a plurality of data streams are received, a plurality of code symbol sequences are generated by precoding the plurality of data streams, the code symbol sequences being mapped to the transmit antennas in a one-to-one correspondence, the code symbol sequences being delayed by delay times for the mapped transmit antennas, and the delayed code symbol sequences are transmitted through the mapped transmit antennas.

摘要翻译： 一种用于在其中接收多个数据流的多天线系统中发送和接收数据流的装置和方法，通过预编码多个数据流来生成多个码符号序列，所述码符号序列被映射 以一一对应的方式发送到发射天线，代码符号序列被延迟了映射的发射天线的延迟时间，延迟的码元序列通过映射的发射天线发射。

公开(公告)号：US6023298A

公开(公告)日：2000-02-08

申请号：US828736

申请日：1997-03-21

申请人： Duck-Dong Hwang

发明人： Duck-Dong Hwang

IPC分类号： H04N19/50 ,  G06T9/00 ,  H03M7/36 ,  H04N19/103 ,  H04N19/136 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/46 ,  H04N19/463 ,  H04N19/503 ,  H04N19/51 ,  H04N19/517 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93 ,  H04N7/12

CPC分类号： H04N19/51

摘要： A current frame containing a multiplicity of current block signals is predicted based on a previous frame by employing an apparatus which produces a predicted current block signal corresponding to each of the current block signals. The apparatus first calculates a correlation factor depicting an improved correlation between the current block signal and a corresponding predicted block signal selected from the previous frame based on an estimation of the motion between the current and the previous frames. Once the correlation factor is computed, the predicted current block signal is determined based on the correlation factor and the current and the predicted block signals.

摘要翻译： 通过采用产生与每个当前块信号相对应的预测当前块信号的装置，基于前一帧来预测包含多个当前块信号的当前帧。 该装置首先基于对当前帧和先前帧之间的运动的估计来计算描述当前块信号和从先前帧中选择的对应的预测块信号之间改进的相关性的相关因子。 一旦计算了相关因子，则基于相关因子和当前和预测的块信号来确定预测的当前块信号。

公开(公告)号：US5781249A

公开(公告)日：1998-07-14

申请号：US743785

申请日：1996-11-07

申请人： Duck-Dong Hwang

发明人： Duck-Dong Hwang

IPC分类号： G06T7/20 ,  G06T7/60 ,  H04N5/14 ,  H04N7/24 ,  H04N19/105 ,  H04N19/134 ,  H04N19/154 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/50 ,  H04N19/51 ,  H04N19/533 ,  H04N19/57 ,  H04N7/32

CPC分类号： H04N5/145 ,  H04N19/51

摘要： A motion vector detecting method determines a motion vector of a search block included in a search frame of a video signal by using motion vectors of processed neighboring blocks, wherein the search frame is divided into a multiplicity of blocks which include a set of processed blocks whose motion vectors have been determined, and the set of processed blocks contain the processed neighboring blocks which are neighboring blocks of the search block, by: (a) selecting an X-vector and an Y-vector among the motion vectors of the processed neighboring blocks, wherein the X-vector is a vector which is most similar to a horizontal vector the and the Y-vector is a vector which is most similar to a vertical vector, to thereby provide a group of candidate vectors which include the X-vector, the Y-vector and a 0 vector; (b) deciding a candidate motion vector among the group of candidate vectors; and (c) providing the candidate motion vector as the motion vector of the search block in case a distortion between the search block and a predicted block corresponding to the candidate motion vector is smaller than a predetermined threshold value and determining the motion vector of the search block by using a full search block matching method in case the distortion is not smaller than the predetermined threshold value.

摘要翻译： 运动矢量检测方法通过使用经处理的相邻块的运动矢量来确定包含在视频信号的搜索帧中的搜索块的运动矢量，其中搜索帧被分成多个块，其包括一组处理的块， 已经确定了运动矢量，并且所处理的块集合包含作为搜索块的相邻块的经处理的相邻块，通过：（a）在所处理的相邻块的运动矢量中选择X向量和Y向量 其中，X矢量是与水平矢量最相似的矢量，Y矢量是与垂直矢量最相似的矢量，由此提供包括X矢量的候选矢量组， Y向量和0向量; （b）确定所述候选矢量组中的候选运动矢量; 以及（c）在搜索块与对应于候选运动矢量的预测块之间的失真小于预定阈值的情况下提供候选运动矢量作为搜索块的运动矢量，并且确定搜索的运动矢量 在失真不小于预定阈值的情况下通过使用全搜索块匹配方法来块。