公开(公告)号：US20160006495A1

公开(公告)日：2016-01-07

申请号：US14767825

申请日：2014-06-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Hanjun PARK

IPC: H04B7/04 ,  H04L5/00

CPC classification number: H04B7/0486 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0639 ,  H04B17/382 ,  H04L1/0026 ,  H04L1/0027 ,  H04L5/0023 ,  H04L5/0057 ,  H04W72/0413 ,  H04W72/06 ,  H04W88/02

Abstract: The present invention relates to a wireless communication system. A method for transmitting CSI by a terminal in a wireless communication system according to an embodiment of the present invention comprises: subsampling a first codebook associated with a first PMI and a second codebook associated with a second PMI according to a report sub-mode for four antenna ports; and reporting channel state information based on the subsampled first codebook and the subsampled second codebook, wherein a first codebook index for the first PMI may be determined as one of 0, 4, 8, and 12 when RI is 1 or 2, a second codebook index for the second PMI may be determined as one of 0, 2, 8, and 10 when the RI is 1, and the second codebook index for the second PMI may be determined as one of 0, 1, 4, and 5 when the RI is 2.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统。 根据本发明的实施例的用于在无线通信系统中的终端发送CSI的方法包括：根据用于四个的报告子模式对与第一PMI相关联的第一码本和与第二PMI相关联的第二码本进行子采样 天线端口; 以及基于子采样的第一码本和子采样的第二码本报告信道状态信息，其中当RI为1或2时，用于第一PMI的第一码本索引可以被确定为0,4,8和12中的一个，第二码本 当RI为1时，第二PMI的索引可以被确定为0,2,8和10中的一个，并且当第二PMI的第二码本索引可以被确定为0,1,4和5中的一个时，当 RI为2。

公开(公告)号：US20150349864A1

公开(公告)日：2015-12-03

申请号：US14759629

申请日：2014-01-09

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Kijun KIM ,  Hanjun PARK ,  Youngtae KIM

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0478 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/065 ,  H04J11/00

Abstract: The present invention relates to a wireless communication system. A method by which a base station transmits a downlink signal in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving first and second precoding matrix indicators (PMIs) from a terminal; determining a first matrix (W1) from a first codebook on the basis of the first PMI, determining a second matrix (W2) from a second codebook on the basis of the second PMI, and determining a precoding matrix (W) on the basis of the first matrix (W1) and the second matrix (W2); performing precoding by using the determined precoding matrix (W) at two or more layers to which a downlink signal is mapped; and transmitting a precoded signal to the terminal, wherein all precoding vectors included in the precoding matrix (W) have linear phase increment properties and can be orthonormal to one another.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统。 根据本发明的一个实施例的基站在无线通信系统中发送下行链路信号的方法包括以下步骤：从终端接收第一和第二预编码矩阵指示符（PMI）; 基于第一PMI从第一码本确定第一矩阵（W1），基于第二PMI从第二码本确定第二矩阵（W2），并且基于第二PMI确定预编码矩阵（W） 第一矩阵（W1）和第二矩阵（W2）; 通过在映射下行链路信号的两个或更多个层处使用所确定的预编码矩阵（W）来执行预编码; 以及向所述终端发送预编码信号，其中包括在所述预编码矩阵（W）中的所有预编码矢量具有线性相位增量属性并且可以彼此正交。

公开(公告)号：US20150341091A1

公开(公告)日：2015-11-26

申请号：US14758767

申请日：2013-12-30

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun PARK ,  Kijun KIM ,  Jonghyun PARK

IPC: H04B7/04 ,  H04B7/08 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0639 ,  H04B7/086

Abstract: A method of a receiving a downlink signal from a base station including a two-dimensional (2D) antenna array composed of a plurality of antenna elements in a wireless communication system is disclosed. The method includes receiving a reference signal allocated to at least one column-direction antenna array of the 2D antenna array, receiving information about a semi-static beam candidate set composed of at least one semi-static beam applicable to the at least one column-direction antenna array, and measuring an average channel state for semi-static beamforming using the received reference signal and the information about the semi-static candidate set. The 2D antenna array is virtualized to one-dimensional (1D) antenna array supporting dynamic beamforming by applying at least one semi-static beam in the semi-static beam candidate set to the column-direction antenna array.

Abstract translation: 公开了一种在无线通信系统中从包括由多个天线元件组成的二维（2D）天线阵列的基站接收下行链路信号的方法。 该方法包括接收分配给2D天线阵列的至少一个列方向天线阵列的参考信号，接收关于适用于至少一个列阵列的至少一个半静态波束组成的半静态波束候选组的信息， 并且使用所接收的参考信号和关于半静态候选集的信息来测量用于半静态波束形成的平均信道状态。 将2D天线阵列虚拟化为支持动态波束成形的一维（1D）天线阵列，通过在半静态波束候选组中对列方向天线阵列施加至少一个半静态波束。

公开(公告)号：US20150334698A1

公开(公告)日：2015-11-19

申请号：US14711321

申请日：2015-05-13

Applicant: LG Electronics Inc.

Inventor： Hanjun PARK ,  Kijun KIM ,  Hyunho LEE

IPC: H04W72/04 ,  H04W4/08 ,  H04W72/12

CPC classification number: H04W72/048 ,  H04L5/00 ,  H04W4/08 ,  H04W4/70 ,  H04W72/121 ,  H04W72/1289 ,  H04W88/06

Abstract: Allocation of resources for Device-to-Device (D2D) communication and a method and apparatus for transmitting and receiving a signal on the basis of the resource allocation are disclosed. A method for performing D2D (Device to Device) communication in a wireless communication system by a terminal includes: obtaining information related to an SA (Scheduling Assignment) resource region comprised of at least two sub scheduling assignment (SA) resource regions for the D2D communication; determining information regarding a terminal group to be operated in a reception mode in each sub SA resource region according to the information related to an SA resource region; determining a terminal group scheduled to include the terminal therein; and receiving a scheduling assignment (SA) for the D2D communication in the sub SA resource region in which the determined terminal group is scheduled to operate in the reception mode. The information related to an SA resource region includes the number (M) of sub SA resource regions included in the SA resource region and the number (NR) of sub SA resource regions to be operated in a reception mode given to one terminal group within the SA resource region.

Abstract translation: 公开了用于设备到设备（D2D）通信的资源的分配以及用于基于资源分配来发送和接收信号的方法和装置。 用于在终端中进行无线通信系统中的D2D（Device to Device，通信设备）通信的方法包括：获得与由D2D通信的至少两个子调度分配（SA）资源区域组成的SA（调度分配）资源区域相关的信息 ; 根据与SA资源区域相关的信息，确定关于在每个子SA资源区域中以接收模式操作的终端组的信息; 确定计划在其中包括终端的终端组; 并且在被确定的终端组被调度为在接收模式中操作的子SA资源区域中接收用于D2D通信的调度分配（SA）。 与SA资源区域相关的信息包括在SA资源区域中包括的子SA资源区域的数量（M）和在给予该资源区域内的一个终端组的接收模式中要操作的子SA资源区域的数量（NR） SA资源区。

公开(公告)号：US20150201421A1

公开(公告)日：2015-07-16

申请号：US14596142

申请日：2015-01-13

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun PARK ,  Kijun KIM ,  Yunjung YI

IPC: H04W72/08

CPC classification number: H04L1/00 ,  H04B7/024 ,  H04B17/345 ,  H04J11/0056 ,  H04L1/16 ,  H04W72/082

Abstract: A method for cancelling interference performed by a terminal in a wireless communication system is disclosed. The method includes transmitting an interference information request and Interference Cancellation (IC) scheme information to a serving Base Station (BS), receiving from the serving BS interference information determined according to the interference information request and the IC scheme information, and cancelling interference using the interference information. The IC scheme information may be transmitted when the terminal is to transmit the interference information request and an Interference to Noise power Ratio (INR) exceeds a threshold.

Abstract translation: 公开了一种用于消除由无线通信系统中的终端执行的干扰的方法。 该方法包括向服务基站（BS）发送干扰信息请求和干扰消除（IC）方案信息，从服务BS接收根据干扰信息请求和IC方案信息确定的干扰信息，以及使用 干扰信息。 当终端要发送干扰信息请求和干扰信噪比（INR）超过阈值时，可以发送IC方案信息。

公开(公告)号：US20140192918A1

公开(公告)日：2014-07-10

申请号：US14150405

申请日：2014-01-08

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun PARK ,  Youngtae KIM ,  Kijun KIM ,  Hyungtae KIM

IPC: H04B7/04 ,  H04W88/08 ,  H04W88/02

CPC classification number: H04B7/0486 ,  H04B7/0469 ,  H04B7/0478 ,  H04L1/06 ,  H04L1/0618 ,  H04W88/02 ,  H04W88/08

Abstract: A method of reporting a channel state to a base station supporting downlink multiple input multiple output in a wireless communication system includes measuring a downlink channel based on a downlink signal received from the base station, and reporting a codebook index for precoding of the downlink signal according to the measurement of the downlink channel. The codebook for precoding includes an improved codebook (hereinafter, referred to as an improved 4Tx codebook) having a dual structure composed of a codebook for wideband and a codebook for subband, for 4 transmit (4Tx) antenna ports, and the improved 4Tx codebook includes sub-codebooks obtained by sub-sampling the codebook for subband according to priority.

Abstract translation: 向在无线通信系统中支持下行链路多输入多输出的基站报告信道状态的方法包括基于从基站接收的下行链路信号测量下行信道，并根据下行链路信号的预编码报告码本索引， 到下行链路信道的测量。 用于预编码的码本包括用于4个发送（4Tx）天线端口的具有由宽带码本和子带码本组成的双重结构的改进码本（以下称为改进的4Tx码本），并且改进的4Tx码本包括 根据优先级对子带码本进行子采样而得到的子码本。

公开(公告)号：US20140011468A1

公开(公告)日：2014-01-09

申请号：US13935906

申请日：2013-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun PARK ,  Jonghyun PARK ,  Kijun KIM ,  Hanbyul SEO

IPC: H04B7/08

CPC classification number: H04B7/0802 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/086 ,  H04B7/0874

Abstract: A method for receiving a radio signal by a receiver including a 2-dimensional antenna array which consists of a plurality of antenna elements in a wireless communication system includes: dividing the plurality of antenna elements into a plurality of groups; determining a group-specific reception beam for each of the plurality of groups; applying the group-specific reception beam to a channel corresponding to each of the plurality of groups to acquire virtual channels respectively corresponding to the plurality of groups; and estimating channels respectively corresponding to the plurality of groups based on reference signals received through the virtual channels.

Abstract translation: 一种用于在无线通信系统中由包括由多个天线元件组成的二维天线阵列的接收机接收无线电信号的方法包括：将多个天线元件分成多个组; 确定所述多个组中的每个组的组特定接收波束; 将所述组特定接收波束应用于与所述多个组中的每一个相对应的信道，以获取分别对应于所述多个组的虚拟信道; 以及基于通过虚拟信道接收的参考信号来估计与多个组对应的信道。

公开(公告)号：US20130094479A1

公开(公告)日：2013-04-18

申请号：US13653125

申请日：2012-10-16

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun PARK ,  Seungmin LEE ,  Hyungtae KIM ,  Hanbyul SEO

IPC: H04W72/04

CPC classification number: H04L1/0026 ,  H04L1/0027 ,  H04L1/0031 ,  H04L1/0077 ,  H04L5/0007 ,  H04L5/0035 ,  H04L5/0057 ,  H04W28/06 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1289

Abstract: A method for transmitting, by a user equipment (UE), a channel state information (CSI) in a wireless communication system is disclosed. The method includes receiving control information about a transmission of the CSI from a serving eNodeB, allocating a CSI combination composed of different CSIs to one subframe based on the received control information, and transmitting the CSI combination to the serving eNodeB in the allocated subframe, wherein the control information includes information on a maximum payload size of a CSI being able to be transmitted in one subframe, a transmission period and a transmission start time point of the CSI combination, and a transmission period and a transmission start time point of each of the different CSIs.

Abstract translation: 公开了一种用户设备（UE）在无线通信系统中发送信道状态信息（CSI）的方法。 该方法包括从服务eNodeB接收关于CSI的传输的控制信息，基于接收到的控制信息，将由不同CSI组成的CSI组合分配给一个子帧，以及在所分配的子帧中向服务eNodeB发送CSI组合，其中 控制信息包括关于能够在一个子帧中发送的CSI的最大有效载荷大小的信息，CSI组合的发送周期和发送开始时间点，以及每个的发送周期和发送开始时间点 不同的CSI。