公开(公告)号：US09843434B2

公开(公告)日：2017-12-12

申请号：US14419635

申请日：2013-07-31

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jaehoon Chung ,  Sunam Kim

IPC: H04L5/00 ,  H04L27/26

CPC classification number: H04L5/0069 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2607

Abstract: Disclosed herein is a method of transceiving a signal between a transmitter and a receiver in a wireless communication system. The method includes transceiving the signal in units of a subframe including a plurality of symbols. Each of the plurality of symbols includes a valid symbol and a cyclic prefix, and a length of the cyclic prefix is changed according to a distance between the transmitter and the receiver.

公开(公告)号：US09660712B2

公开(公告)日：2017-05-23

申请号：US14765802

申请日：2014-02-04

Applicant: LG ELECTRONICS INC.

Inventor： Sungho Park ,  Jaehoon Chung ,  Sunam Kim ,  Soocheol Kyeong ,  Jinmin Kim ,  Kitae Kim ,  Kyunghaeng Lee ,  Hyunsoo Ko ,  Jiwon Kang

IPC: H04B7/06 ,  H04W16/28 ,  H04B7/0452 ,  H04B7/0456 ,  H04W72/06 ,  H04W88/02 ,  H04W88/08 ,  H04L5/00

CPC classification number: H04B7/0617 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0626 ,  H04L5/0023 ,  H04L5/0057 ,  H04L5/0092 ,  H04W16/28 ,  H04W72/06 ,  H04W88/02 ,  H04W88/08

Abstract: The method comprises: a step in which the base station transmits to a terminal configuration information related to the beam restricted sub-frame; and a step in which the base station transmits downlink data to the terminal via a sub-frame. The sub-frame includes the beam restricted sub-frame and a normal sub-frame, setting information includes information indicating a sub-frame set as the beam restricted sub-frame among multiple sub-frames, the beam restricted sub-frame is a sub-frame transmitted only based on a first beam subset, the normal sub-frame is a sub-frame transmitted based on the first beam subset and a second beam subset, the first beam subset is the set of beams generated based on a first precoding matrix set, and the second beam subset is the set of beams generated based on a second precoding matrix set including the first precoding matrix set.

公开(公告)号：US09634749B2

公开(公告)日：2017-04-25

申请号：US15275108

申请日：2016-09-23

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Ko ,  Sunam Kim ,  Dongguk Lim ,  Moonil Lee ,  Jaehoon Chung

IPC: H04B7/02 ,  H04B7/04 ,  H04B7/0417 ,  H04W72/04 ,  H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/10 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0028 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/006 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03808 ,  H04W48/08 ,  H04W72/00 ,  H04W72/0413 ,  H04W72/0446

Abstract: A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8.

公开(公告)号：US09602177B2

公开(公告)日：2017-03-21

申请号：US15058072

申请日：2016-03-01

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Ko ,  Sunam Kim ,  Dongguk Lim ,  Moonil Lee ,  Jaehoon Chung

IPC: H04B7/04 ,  H04B7/0417 ,  H04L1/00 ,  H04L5/00 ,  H04L25/03 ,  H04W72/04

CPC classification number: H04B7/0417 ,  H04B7/0486 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0028 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0057 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03808 ,  H04W72/0413

Abstract: A method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas. A method for transmitting CSI of downlink transmission via uplink in a wireless communication system includes transmitting a joint-coded rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe, and transmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. If the RI is Rank-1 or Rank-2, the first PMI indicates one of subsets each having 8 indexes from among 16 indexes of the first PMI of a precoding codebook.

公开(公告)号：US09544893B2

公开(公告)日：2017-01-10

申请号：US14887120

申请日：2015-10-19

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jinyoung Chun ,  Sunam Kim ,  Jiwon Kang ,  Binchul Ihm ,  Sungho Park

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04W72/12

CPC classification number: H04W72/042 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0053 ,  H04W72/12

Abstract: In a wireless communication system, when a terminal receives control information from a downlink subframe, which is divided into a Physical Downlink Control Channel (PDCCH) region and a Physical Downlink Shared Channel (PDSCH) region, in a wireless communication system, the receiving of the control information includes: receiving, from a base station, first CFI information indicating the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols available for Physical Downlink Control Channel (PDCCH) transmission; receiving, from the base station, second CFI information indicating start OFDM symbol information available for Physical Downlink Shared Channel (PDSCH) transmission corresponding to an enhanced Physical Downlink Control Channel (E-PDCCH); and receiving the PDSCH from the base station on the basis of the first CFI information or the second CFI information. The PDCCH is placed in the PDCCH region of the downlink subframe, and the E-PDCCH is placed in the PDSCH region of the downlink subframe.

Abstract translation: 在无线通信系统中，当终端从无线通信系统中被分割为物理下行链路控制信道（PDCCH）区域和物理下行链路共享信道（PDSCH）区域的下行链路子帧接收到控制信息时， 控制信息包括：从基站接收指示可用于物理下行链路控制信道（PDCCH）传输的正交频分复用（OFDM）符号的数量的第一CFI信息; 从基站接收指示对应于增强物理下行链路控制信道（E-PDCCH）的物理下行链路共享信道（PDSCH）传输可用的起始OFDM符号信息的第二CFI信息; 以及基于第一CFI信息或第二CFI信息从基站接收PDSCH。 PDCCH被配置在下行链路子帧的PDCCH区域，E-PDCCH被配置在下行子帧的PDSCH区域中。

公开(公告)号：US09287948B2

公开(公告)日：2016-03-15

申请号：US14573988

申请日：2014-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Seunghan Kim ,  Sunam Kim

IPC: H04B7/04 ,  H04B7/06 ,  H04L5/00 ,  H04W4/00 ,  H04W16/26 ,  H04W88/04 ,  H04W16/28 ,  H04W88/08

CPC classification number: H04B7/0456 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0639 ,  H04B7/0854 ,  H04L5/0005 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/14 ,  H04W16/28 ,  H04W88/08

Abstract: A method is provided for transmitting a downlink signal by a base station with an antenna array including a plurality of antenna elements in a wireless communication system. The downlink signal is precoded using a precoding matrix for the antenna array. The precoded downlink signal is transmitted to a user equipment (UE). Each element of the precoding matrix is expressed by ∑ n = 1 N ⁢ A n ⁢ ⅇ j ⁢ { ( n - 1 ) ⁢ kd ⁢ ⁢ cos ⁢ ⁢ θ + ϕ n } , where ⁢ ⁢ A n = ( N - 1 ) ! ( N - n ) ! ⁢ ( n - 1 ) ! , N denotes a number of antenna elements, n denotes an index of each of the antenna elements corresponding to 1 to N−1, k denotes a propagation constant, d denotes a distance between the antenna elements, θ denotes an azimuth, ϕ n ⁡ ( y n ) = ϕ set ⁡ ( 2 ⁢ y n ( N - 1 ) ⁢ d ) 2 , yn=(n−(N+1)/2)d, φset denotes a phase value to be applied to an antenna array 1, “!” denotes a symbol of factorial operations, and N! denotes a factorial of a non-negative integer N which is equal to a product of all positive integers less than or equal to N.

Abstract translation: 提供了一种用于在无线通信系统中由包括多个天线元件的天线阵列的基站发送下行链路信号的方法。 使用用于天线阵列的预编码矩阵对下行链路信号进行预编码。 预编码的下行链路信号被发送到用户设备（UE）。 预编码矩阵的每个元素由Σn = 1 N Anⅇj {（n-1）kd，cos cos +＆phis n}，其中，⁢A n =（N-1）！ （N - n）！ （n-1）！ N表示天线元件数，n表示与1〜N-1对应的每个天线元件的索引，k表示传播常数，d表示天线元件之间的距离。 表示方位角 n⁡（y n）=＆phis; 设置⁡（2 yn（N-1）d）2，yn =（n-（N + 1）/ 2）d，＆phgr; set表示应用于天线阵列1的相位值，“！ 表示阶乘运算的符号，N！ 表示非负整数N的阶乘，其等于小于或等于N的所有正整数的乘积。

公开(公告)号：USRE45902E1

公开(公告)日：2016-02-23

申请号：US14106602

申请日：2013-12-13

Applicant: LG ELECTRONICS INC.

Inventor： Jin Young Chun ,  Bin Chul Ihm ,  Hyun Soo Ko ,  Sung Ho Park ,  Sunam Kim

IPC: H04K1/10 ,  H04L1/08 ,  H04L1/00

CPC classification number: H04L1/08 ,  H04L1/0003 ,  H04L27/2614 ,  H04L27/2615 ,  H04L27/2621

Abstract: A method of transmitting data in a wireless communication system is provided. The method includes generating duplicate data by using repetition coding, the duplicate data being the same as original data, shifting the phase of the duplicate data, and transmitting the original data and the phase-shifted duplicate data. The duplicate data is mapped to a modulation symbol having a different size or phase as that of the original data, thus to reduce the PAPR unlike the general repetition coding.

公开(公告)号：US09209883B2

公开(公告)日：2015-12-08

申请号：US14528728

申请日：2014-10-30

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Ko ,  Sunam Kim ,  Dongguk Lim ,  Moonil Lee ,  Jaehoon Chung

IPC: H04B7/06 ,  H04L1/00 ,  H04L5/00 ,  H04L25/03 ,  H04W48/08 ,  H04W72/00

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/10 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0028 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/006 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03808 ,  H04W48/08 ,  H04W72/00 ,  H04W72/0413 ,  H04W72/0446

Abstract: A method for transmitting channel status information (CSI) of downlink transmission via uplink in a wireless communication system includes transmitting a rank indicator (RI) and a precoder type indicator (PTI) at a first subframe, transmitting at a second subframe a first precoding matrix indicator (PMI) when the PTI has a first value and transmitting a second PMI and a wideband channel quality indicator (WB CQI) when the PTI has a second value, and transmitting at a third subframe a second PMI and a WB CQI when the PTI has a first value and transmitting a subband (SB) CQI and a second PMI when the PTI has a second value. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. Subsampled codebooks of precoding codebooks of individual Rank-2, Rank-3 and Rank-4 are applied to the second PMI.

Abstract translation: 一种用于在无线通信系统中经由上行链路传输下行链路传输的信道状态信息（CSI）的方法，包括在第一子帧处发送秩指示符（RI）和预编码器类型指示符（PTI），在第二子帧处发送第一预编码矩阵 当PTI具有第一值并且当PTI具有第二值时发送第二PMI和宽带信道质量指示符（WB CQI）时，当PTI具有第一值并且当PTI发送时，在第三子帧发送第二PMI和WB CQI，指示符（PMI） 具有第一值并且当PTI具有第二值时发送子带（SB）CQI和第二PMI。 用户设备（UE）优选预编码矩阵由第一PMI和第二PMI的组合指示。 个别Rank-2，Rank-3和Rank-4的预编码码本的二次采样码本应用于第二PMI。

公开(公告)号：US09154205B2

公开(公告)日：2015-10-06

申请号：US14395796

申请日：2013-04-15

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Sunam Kim ,  Binchul Ihm ,  Hyukmin Son ,  Changhwan Park ,  Jaehoon Chung

IPC: H04B7/04 ,  H04B7/06 ,  H04W72/04

CPC classification number: H04B7/046 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0691 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03 ,  H04W72/0413

Abstract: A method for downlink beamforming in a wireless access system and a device therefor are disclosed. Specifically, the method comprises the following steps: transmitting, by an eNB, a reference signal to a UE through only a first antenna set from among whole antennas; receiving, by the eNB, channel state information (CSI) for the first antenna set from the UE; and transmitting, by the eNB, beamforming a downlink channel by using a precoding matrix for the whole antennas, wherein CSI for a second antenna set by which the reference signal has not been transmitted from among the whole antennas is calculated using the CSI for the first antenna set.

Abstract translation: 公开了一种用于无线接入系统中的下行链路波束成形的方法及其装置。 具体地说，该方法包括以下步骤：由eNB通过仅从整个天线中的第一天线组发送参考信号给UE; 由eNB接收来自UE的第一天线组的信道状态信息（CSI）; 并且由eNB通过使用用于整个天线的预编码矩阵来发送对下行链路信道进行波束成形，其中使用用于第一个天线的CSI来计算在整个天线中尚未发送参考信号的第二天线组的CSI 天线组。

公开(公告)号：US20150163800A1

公开(公告)日：2015-06-11

申请号：US14406965

申请日：2013-05-06

Applicant: LG ELECTRONICS INC.

Inventor： Sunam Kim ,  Jaehoon Chung ,  Binchul Ihm

IPC: H04W72/04

CPC classification number: H04W72/0446 ,  H04L5/00 ,  H04L5/001 ,  H04L5/0035 ,  H04W36/0061 ,  H04W72/042 ,  H04W72/0426

Abstract: One embodiment of the present invention provides a method for determining a radio resource by a terminal. According to the method, information on a second cell can be received from a first cell, wherein a radio resource of the first cell includes a plurality of wireless frames along a time axis, each wireless frame includes a plurality of subframes, and the information on the second cell can include an ID of the second cell. In addition, a radio resource of the second cell can be determined by using the information on the second cell, wherein the radio resource of the second cell can be determined as a partial region in the wireless frames or the subframes of the first cell, which is indicated by the information on the second cell.

Abstract translation: 本发明的一个实施例提供一种终端确定无线电资源的方法。 根据该方法，可以从第一小区接收关于第二小区的信息，其中第一小区的无线资源包括沿着时间轴的多个无线帧，每个无线帧包括多个子帧，并且关于 第二小区可以包括第二小区的ID。 此外，可以通过使用关于第二小区的信息来确定第二小区的无线电资源，其中可以将第二小区的无线电资源确定为第一小区的无线帧或子帧中的部分区域，其中 由第二小区上的信息指示。