公开(公告)号：US20180034607A1

公开(公告)日：2018-02-01

申请号：US15548703

申请日：2016-01-22

Applicant: LG Electronics Inc.

Inventor： Dongkyu Kim ,  Kilbom Lee ,  Kwangseok Noh ,  Sangrim Lee ,  Hyunsoo Ko ,  Kukheon Chol

IPC: H04L5/00 ,  H04W72/08 ,  H04L25/08

CPC classification number: H04L5/0048 ,  H04B17/345 ,  H04L5/1461 ,  H04L25/0228 ,  H04L25/08 ,  H04W72/082

Abstract: A method by which a communication device using an FDR method estimates a self-interference signal can comprise the steps of: transmitting, in a transmitting end, a pilot signal to which a selected sequence is applied; receiving, in a reception end, a self-interference signal relating to the pilot signal; and estimating a channel of a nonlinear self-interference signal component in a self-interference channel by using a cross correlation characteristic of the selected sequence.

公开(公告)号：US09883478B2

公开(公告)日：2018-01-30

申请号：US15541618

申请日：2015-01-09

Applicant: LG ELECTRONICS INC.

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

IPC: H04W24/00 ,  H04W64/00 ,  G01S5/02 ,  H04L5/14

CPC classification number: H04W64/00 ,  G01S5/02 ,  G01S5/0252 ,  H04L5/14

Abstract: The present invention relates to a method for positioning multiple user equipments (UEs) by a base station in a wireless communication system supporting full-duplex communication and an apparatus therefor. More specifically, the present invention comprises: setting a unit distance on the basis of the magnitude of inter-device interference (IDI) with respect to a first UE; and establishing multiple boundaries around each of the multiple UEs and the base station according to relative distances on the basis of the unit distance and checking whether the boundaries overlap each other. Here, the relative distances indicate with respect to the multiple UEs, measured on the basis of the magnitude of inter-device interference (IDI).

公开(公告)号：US09847866B2

公开(公告)日：2017-12-19

申请号：US14893491

申请日：2014-06-11

Applicant: LG ELECTRONICS INC.

Inventor： Kwangseok Noh ,  Jinmin Kim ,  Kukheon Choi ,  Jaehoon Chung ,  Kitae Kim

IPC: H04L5/14 ,  H04W72/04 ,  H04B7/26 ,  H04L5/00

CPC classification number: H04L5/14 ,  H04B7/26 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0091 ,  H04W72/042

Abstract: The present invention relates a wireless access system which supports a full duplex radio (FDR) transmission environment. A method for receiving a signal from a base station by a terminal in the wireless access system which supports FDR transmission according to an embodiment of the present invention comprises the steps of: receiving, from the base station, reference signal mode information indicating resources by which a reference signal is transmitted, from among reference signal available resources by which the reference signal can be transmitted; receiving, from the base station, additional resource mode information indicating additional data resources by which a terminal can simultaneously transmit data, from among the resources by which the reference signal is transmitted; and transmitting the data using the additional resource mode information simultaneously while receiving the reference signal using the reference signal mode information.

公开(公告)号：US09832053B2

公开(公告)日：2017-11-28

申请号：US14728381

申请日：2015-06-02

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/005 ,  H04L27/01 ,  H04B1/525 ,  H04B3/23

CPC classification number: H04L27/01 ,  H04B1/525 ,  H04B3/23

Abstract: The apparatus for reconstructing a desired signal using a full duplex radio (FDR) scheme includes: a digital self-interference cancellation unit configured to output a first digital signal; a demodulator configured to demodulate the first digital signal; a modulator configured to modulate the demodulated first digital signal; an attenuator configured to attenuate the modulated first digital signal by applying an attenuation coefficient to the modulated first digital signal; and an operation unit configured to receive the attenuated first digital signal and the first digital signal, and transmit a residual signal to the digital self-interference cancellation unit, wherein the residual signal is obtained by subtracting the attenuated first digital signal from the first digital signal.

公开(公告)号：US20170111906A1

公开(公告)日：2017-04-20

申请号：US15317698

申请日：2015-03-31

Applicant: LG Electronics Inc.

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

IPC: H04W72/04 ,  H04W24/08 ,  H04W28/02 ,  H04L5/14

CPC classification number: H04W72/0446 ,  H04B17/345 ,  H04L5/0023 ,  H04L5/0062 ,  H04L5/0082 ,  H04L5/14 ,  H04W24/08 ,  H04W28/0236 ,  H04W52/146 ,  H04W72/0413 ,  H04W72/042

Abstract: A method for measuring inter-device interference (IDI) by a terminal in a wireless communication system supporting full-duplex communication according to an embodiment of the present invention comprises the steps of: determining the total number of times of IDI measurement required for a terminal group to which the terminal belongs; determining a basic sub-frame configuration pattern on the basis of the determined total number of times of the IDI measurement; and measuring the IDI as many times as the number of times allocated to the terminal by applying a terminal-specific shift value to the basic sub-frame configuration pattern,

公开(公告)号：US20170094622A1

公开(公告)日：2017-03-30

申请号：US15315882

申请日：2015-04-02

Applicant: LG Electronics Inc.

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

IPC: H04W56/00

CPC classification number: H04W56/001 ,  H04W56/00 ,  H04W56/0005

Abstract: Disclosed is a method for performing, by a wireless device, synchronization with a base station in a wireless communication system. A method for synchronizing a wireless device according to one embodiment of the present invention comprises the steps of: receiving a primary synchronization signal and an auxiliary synchronization signal through a first subframe from a first base station; and performing synchronization with the first base station using the primary synchronization signal and the auxiliary synchronization signal, wherein the synchronization with the first base station is performed depending on whether a moving cell synchronization signal exists on the first subframe.

公开(公告)号：US09264153B2

公开(公告)日：2016-02-16

申请号：US14565736

申请日：2014-12-10

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/02 ,  H04B15/00 ,  H04B7/24 ,  H04B7/06

CPC classification number: H04B15/02 ,  H04B1/48 ,  H04B1/525 ,  H04B7/026 ,  H04B7/0626 ,  H04B7/24 ,  H04B15/00 ,  H04B2001/485

Abstract: An apparatus for cancelling a self-interference signal between a transmission antenna and a reception antenna is disclosed. The apparatus includes a first self-interference signal cancellation unit for cancelling a self-interference signal in consideration of a linear channel between the transmission antenna and the reception antenna, a second self-interference signal cancellation unit for cancelling a self-interference signal in consideration of nonlinear channel characteristic between the transmission antenna and the reception antenna or linear characteristic of a radio channel, and a controller for comparing a transmitted signal output from the transmission antenna and a received signal received by the reception antenna to provide a first coefficient to be applied to self-interference signal cancellation of a linear device in the first self-interference signal cancellation unit and a second coefficient to be applied to self-interference signal cancellation of a nonlinear device in the second self-interference signal cancellation unit.

公开(公告)号：US11271680B2

公开(公告)日：2022-03-08

申请号：US16806452

申请日：2020-03-02

Applicant: LG Electronics Inc.

Inventor： Seunggye Hwang ,  Kijun Kim ,  Soocheol Kyeong ,  Bonghoe Kim ,  Jinwoo Kim ,  Kwangseok Noh ,  Jongwoong Shin ,  Joonkui Ahn ,  Hyangsun You

IPC: H04L1/00 ,  H03M13/13

Abstract: A disclosure of the present specification provides a method for transmitting data by a transmitter. The method may comprise the steps of: when a transport block (TB) is divided into n data blocks, adding additional information after each of the n data blocks; and adding a cyclic redundancy check (CRC) after the last additional information. Here, the CRC may be generated on the basis of the n data blocks, and the n pieces of additional information added after each of data blocks.

公开(公告)号：US20220029638A1

公开(公告)日：2022-01-27

申请号：US17297705

申请日：2019-12-05

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe Kim ,  Kwangseok Noh ,  IImin Kim

IPC: H03M13/13 ,  H04L1/18 ,  H04L1/00

Abstract: A method for transmitting data on the basis of polar coding in a wireless communication system, according to the present disclosure may comprise the steps of: transmitting data including a plurality of information blocks, each of which contains a corresponding cyclic redundancy check (CRC); receiving a hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ ACK/NACK) of the transmitted data; performing learning in order to retransmit the plurality of information blocks; and retransmitting the plurality of information blocks on the basis of the HARQ ACK/NACK, wherein the step of performing learning comprises the steps of: obtaining current state sn; obtaining actions to be applied to current state sn; and selecting, from the actions, an action maximizing expected reward value Qn+1, wherein expected reward value Qn+1 is obtained on the basis of rewards R1, R2, . . . , Rn corresponding to states s1, s2, . . . , sn, and the plurality of information blocks is retransmitted on the basis of the selected action.

公开(公告)号：US11206042B2

公开(公告)日：2021-12-21

申请号：US16492458

申请日：2017-03-09

Applicant: LG Electronics Inc.

Inventor： Kwangseok Noh ,  Dongkyu Kim ,  Myeongjin Kim ,  Sangrim Lee ,  Hojae Lee

IPC: H03M13/11 ,  H03M13/09 ,  H03M13/00 ,  H04L1/00

Abstract: An improved layered decoding method for a low density parity check (LDPC) code and a device therefor are disclosed. Disclosed is the layered decoding method for an LDPC code, capable of determining whether decoding is successful by performing a syndrome check on each check node at every variable node update. In addition, the syndrome check can be performed by using reduced variable nodes, thereby reducing decoding power consumption and decoding time consumption.