公开(公告)号：US10225109B2

公开(公告)日：2019-03-05

申请号：US15249119

申请日：2016-08-26

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim Lee ,  Jaehoon Chung ,  Kwangseok Noh ,  Dongkyu Kim ,  Hojae Lee

IPC: H04L25/02 ,  H04L5/00 ,  H04L5/14

Abstract: A method for transmitting information related to a sounding reference signal (SRS) transmission by a base station (BS) of a full duplex radio (FDR) mode in a wireless communication system includes: transmitting information related to a resource region to be used for the SRS transmission to a user equipment of the FDR mode within a resource region configured as an uplink (UL) idle interval; receiving a SRS through the resource region for the SRS transmission from the user equipment; performing an uplink (UL) channel estimation based on the received SRS; and performing a downlink (DL) channel estimation by applying a channel reciprocity characteristic to a result of the uplink (UL) channel estimation.

公开(公告)号：US10122488B2

公开(公告)日：2018-11-06

申请号：US15110226

申请日：2014-10-16

Applicant: LG Electronics Inc.

Inventor： Jaehoon Chung ,  Genebeck Hahn ,  Eunjong Lee ,  Jinmin Kim ,  Kukheon Choi ,  Kwangseok Noh

IPC: H04J11/00 ,  H04B7/26 ,  H04W72/04 ,  H04H20/38 ,  H04L5/14 ,  H04L29/06

Abstract: Disclosed in the present application is a method for transreceiving signals between a base station and user equipment in wireless communication system. Specifically, the method comprises a step of transreceiving the signals with the base station, in units of a wireless frame comprising at least one user equipment-shared time resource interval and at least one user equipment-specific time resource interval, wherein the at least one user equipment-specific time resource interval is a time resource interval for transreceiving data between the base station and the user equipment, and wherein the at least one user equipment-shared time resource interval is a time resource interval for transreceiving signals for measuring interference.

公开(公告)号：US10075904B2

公开(公告)日：2018-09-11

申请号：US15036790

申请日：2014-07-09

Applicant: LG ELECTRONICS INC.

Inventor： Eunjong Lee ,  Jaehoon Chung ,  Hyeyoung Choi ,  Heejeong Cho ,  Genebeck Hahn

IPC: H04W48/16 ,  H04W48/20 ,  H04W74/08 ,  H04W48/18 ,  H04W48/12 ,  H04W84/12

CPC classification number: H04W48/16 ,  H04W48/12 ,  H04W48/18 ,  H04W48/20 ,  H04W74/0833 ,  H04W84/12

Abstract: A user equipment in a communication environment in which a plural communication systems interwork comprises: a processor for searching a base station of a first communication system, the base station having a signal intensity higher than a threshold; and a receiver for receiving information of a base station list of a second communication system adjacent to the terminal through a first communication system link from the searched base station of the first communication system, wherein the processor turns on a second communication system mode in the case of failing in random access channel (RACH) transmissions a predetermined number of times to the searched base station of the first communication system, wherein the receiver receives a beacon signal including an indicator which indicates support of an uplink transmission of the first communication system from base stations included in the information of the base station list of the second communication system; the processor recognizes that an uplink transmission is disabled or only a downlink transmission is enabled through the first communication system link based on the beacon signal; and the information of the base station list of the second communication system may include an indicator which indicates whether the base station of the second communication system supports a downlink (DL) or uplink (UL) transmission through the first communication system link.

公开(公告)号：US10033448B2

公开(公告)日：2018-07-24

申请号：US14781862

申请日：2013-12-19

Applicant: LG ELECTRONICS INC.

Inventor： Jiwon Kang ,  Kilbom Lee ,  Hyunsoo Ko ,  Jaehoon Chung

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/0456 ,  H04W72/04

Abstract: A method and apparatus for performing fractional beamforming using a massive antenna array at a Base Station (BS) in a wireless communication system are disclosed. The method includes dividing the massive antenna array into partitions by rows or by columns, transmitting control information for the fractional beamforming to a User Equipment (UE), receiving feedback information based on the control information from the UE, and transmitting a signal to the UE by performing beamforming using sub-precoders for the partitions and a linking precoder that links the partitions. The control information includes at least one of information about the partitions, information about pilot patterns corresponding to the partitions, information about the linking precoder, and information indicating whether the partitions belong to the same transmission point.

公开(公告)号：US10020975B2

公开(公告)日：2018-07-10

申请号：US15500733

申请日：2015-08-18

Applicant: LG Electronics, Inc.

Inventor： Kwangseok Noh ,  Jaehoon Chung ,  Genebeck Hahn ,  Eunjong Lee ,  Jinmin Kim ,  Kukheon Choi

IPC: H03K9/00 ,  H04L27/38 ,  H04B7/0413 ,  H04L27/06

CPC classification number: H04L27/38 ,  H04B7/0413 ,  H04L5/0026 ,  H04L5/0048 ,  H04L27/0008 ,  H04L27/06 ,  H04L27/3433 ,  H04L27/3845

Abstract: A method by which a terminal demodulates a signal in a wireless access system according to one embodiment of the present invention comprises the steps of: receiving a modulation signal having a modulation order of 2m (m is a natural number); determining a first demodulation constellation arrangement corresponding to a kth (k is an even number among natural numbers of m or less) bit among m numbers of bits; determining a second demodulation constellation arrangement corresponding to an nth (n is an odd number among natural numbers of m or less) bit among the m numbers of bits; and demodulating the received modulation signal by using the first and second demodulation constellation arrangements, wherein the first constellation arrangement can have a pattern in which a square matrix having a size of 2(m/2+1)−(k/2) is repeated.

公开(公告)号：US09960893B2

公开(公告)日：2018-05-01

申请号：US14649437

申请日：2013-10-10

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jinmin Kim ,  Hyunsoo Ko ,  Jaehoon Chung

IPC: H04W74/00 ,  H04L5/00 ,  H04L27/18 ,  H04L27/26

CPC classification number: H04L5/0048 ,  H04L5/0025 ,  H04L5/0051 ,  H04L27/18 ,  H04L27/2601 ,  H04W74/004

Abstract: A method for transmitting a reference signal to a user equipment at a base station in a wireless communication system is disclosed. The method includes transmitting the reference signal to the user equipment according to a first pattern corresponding to a first rank and, if a rank is changed from the first rank to a second rank, transmitting the reference signal to the user equipment according to a second pattern corresponding to the second rank, wherein, if the second rank is greater than the first rank, the second pattern includes the first pattern. Preferably, the first pattern is a reference signal pattern for a single rank and the second pattern is defined as a hierarchical structure in which one or more reference signal symbols are added to the first pattern in a time domain direction.

公开(公告)号：US09954592B2

公开(公告)日：2018-04-24

申请号：US14768611

申请日：2014-03-11

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Ko ,  Jiwon Kang ,  Jaehoon Chung

IPC: H04W72/04 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/04 ,  H04W24/10 ,  H04L5/00

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04B7/0469 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0665 ,  H04L5/0048 ,  H04W24/10 ,  H04W72/0413

Abstract: The present invention relates to a wireless communication system and, more specifically, to a method and an apparatus for reporting channel state information (CSI). According to one embodiment of the present invention, the method by which a terminal of the wireless communication system reports the CSI comprises: a step of receiving a reference signal from a base station; and a step of reporting the CSI generated through the reference signal to the base station. The CSI can include information for indicating a first pre-coding matrix for a first domain of a two-dimensional antenna structure and a second pre-coding matrix for a second domain of the two-dimensional antenna structure. The first pre-coding matrix can be determined on the basis of a coefficient wherein an angle the first domain is determined according to an angle in the second domain.

公开(公告)号：US09924545B2

公开(公告)日：2018-03-20

申请号：US14904383

申请日：2014-04-09

Applicant: LG ELECTRONICS INC.

Inventor： Genebeck Hahn ,  Jaehoon Chung ,  Hyeyoung Choi ,  Eunjong Lee ,  Heejeong Cho

IPC: H04W24/02 ,  H04W74/08 ,  H04W88/08

CPC classification number: H04W74/0833 ,  H04W24/02 ,  H04W88/085

Abstract: Disclosed are: a terminal for selecting RRUs of which a connection state with the terminal is a critical value or more from among a plurality of RRUs on the basis of down signals received from the RRUs, transmitting an RRU list including information on the selected RRUs and a random access preamble to an RRU having the best connection state with the terminal among the selected RRUs, receiving an access information response message indicating a preferred RRU with which a random access is to be performed by the terminal from any one RRU among the selected RRUs and performing a random access process with the preferred RRU; and a method for performing random access by the terminal.

公开(公告)号：US09918335B2

公开(公告)日：2018-03-13

申请号：US15369338

申请日：2016-12-05

Applicant: LG ELECTRONICS INC.

Inventor： Soyeon Kim ,  Jinmin Kim ,  Jaehoon Chung ,  Seunghee Han

IPC: H04B7/00 ,  H04W72/12 ,  H04L5/00 ,  H04L1/00 ,  H04L29/08 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W72/1289 ,  H04L1/0046 ,  H04L5/0005 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0053 ,  H04L69/324 ,  H04W72/1278 ,  H04W72/1294 ,  H04W88/02 ,  H04W88/08

Abstract: A method is provided for receiving a downlink control information (DCI) from a base station (BS) by a user equipment (UE) in a wireless communication system. The UE monitors a plurality of Physical Downlink Control Channel (PDCCH) candidates having a cyclic redundancy check (CRC) scrambled by a cell radio network temporary identifier (C-RNTI) and having a same payload size in a common search space and a UE-specific search space on a primary cell to receive the DCI from the BS. The common search space and the UE-specific search space are overlapped. When the UE is configured with a carrier indicator field (CIF), determining, by the UE, that only a PDCCH in the common search space is transmitted by the BS from among the plurality of PDCCH candidates. The UE receives a Physical Downlink Shared Channel (PDSCH) corresponding to the PDCCH in the common search space.

公开(公告)号：US09906348B2

公开(公告)日：2018-02-27

申请号：US15589317

申请日：2017-05-08

Applicant: LG ELECTRONICS INC.

Inventor： Hyunwoo Lee ,  Jaehoon Chung ,  Seunghee Han

IPC: H04W72/04 ,  H04L1/16 ,  H04L5/00 ,  H04L5/14 ,  H04L1/18 ,  H04W36/00 ,  H04W52/04 ,  H04L27/26

CPC classification number: H04L5/0055 ,  H04L1/1607 ,  H04L1/1854 ,  H04L1/1861 ,  H04L1/1887 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/14 ,  H04L27/2636 ,  H04W36/0072 ,  H04W52/04 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446

Abstract: A method is provided for transmitting Acknowledgement/Negative Acknowledgement (ACK/NACK) information in a wireless communication system. A User Equipment (UE) configures a Physical Uplink Control Channel (PUCCH) format 3 for transmission of the ACK/NACK information. The UE transmits the ACK/NACK information for downlink transmission in a downlink subframe set including M downlink subframes in one uplink subframe, wherein M>1. A plurality of serving cells are configured for the UE and include one Primary Cell (PCell) and at least one Secondary Cell (SCell). The UE transmits the ACK/NACK information using a PUCCH format 1b when a first condition is met that comprises a condition in case where the ACK/NACK information corresponds to one Physical Downlink Shared Channel (PDSCH) without a corresponding Physical Downlink Control Channel (PDCCH) received only on the PCell in the downlink subframe set and the ACK/NACK information corresponds to an additional PDSCH indicated by detection of one corresponding PDCCH.