公开(公告)号：US20180317260A1

公开(公告)日：2018-11-01

申请号：US15735586

申请日：2015-11-05

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim LEE ,  Bonghoe KIM ,  Hyunsoo KO ,  Yunjung YI ,  Hojae LEE

IPC: H04W74/08 ,  H04W72/04

CPC classification number: H04W74/0833 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/0446 ,  H04W74/08

Abstract: A method and a device for performing a random access in a wireless communication system are provided. Specifically, a wireless resource for transmitting a first random access request is selected, and the first random access request is transmitted through the wireless resource. The first random access request includes a transmission period of the first random access request, the frequency of retransmission, and an allowable error of the transmission period. Uplink resource allocation information is received in response to the first random access request. The uplink resource allocation information includes information on an indicator bit and a wireless resource shift. When the indicator bit is a preset value, a second random access request is transmitted through a wireless resource shifted from the wireless resource.

公开(公告)号：US20180248677A1

公开(公告)日：2018-08-30

申请号：US15755045

申请日：2016-01-27

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim LEE ,  Dongkyu KIM ,  Hyunsoo KO ,  Kwangseok NOH ,  Hojae LEE

IPC: H04L5/14 ,  H04L5/00

CPC classification number: H04L5/1461 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0062 ,  H04L5/0085 ,  H04L5/0091 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/26 ,  H04L27/261

Abstract: A method for a device changing a RS mode, the device operating by a FDR scheme, comprises the steps of: deciding to change from a first RS mode to a second RS mode if a preset condition is satisfied; and transmitting information related to the decided second RS mode to a terminal, wherein the first RS mode and the second RS mode may be distinguished from each other by whether RSs which are added in order to channel estimate a non-linear component of a self-interference signal are transmitted or not.

公开(公告)号：US20180227069A1

公开(公告)日：2018-08-09

申请号：US15699511

申请日：2017-09-08

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim LEE ,  Hojae LEE

IPC: H04J11/00 ,  H04L25/02 ,  H04W76/04 ,  H04W74/08

CPC classification number: H04J11/0023 ,  H04L5/0007 ,  H04L5/005 ,  H04L25/0202 ,  H04L25/0236 ,  H04L25/03 ,  H04L27/205 ,  H04W72/0406 ,  H04W74/0833 ,  H04W76/27

Abstract: In an aspect of the present invention, provided is a method for receiving an uplink signal by a base station (BS) in a wireless communication system where a reference signal is not used, including: obtaining information bits by demodulating and decoding a signal of a first user equipment (UE) that is modulated through a differential modulation scheme; estimating a channel between the first UE and the BS using the information bits; and performing successive interference cancellation (SIC) using the signal of the first UE restored through the channel estimation results and the information bits. In this case, the BS may estimate the channel between the first UE and the BS by assuming that an Nth modulation symbol among modulation symbols of the information bits modulated through the differential modulation scheme is fixed to a predetermined constellation point.

公开(公告)号：US20180167239A1

公开(公告)日：2018-06-14

申请号：US15577656

申请日：2016-05-26

Applicant: LG ELECTRONICS INC.

Inventor： Dongkyu KIM ,  Hyunsoo KO ,  Kukheon CHOI ,  Kwangseok NOH ,  Sangrim LEE ,  Hojae LEE

IPC: H04L25/03 ,  H04L5/14 ,  H04L1/20 ,  H04B7/0413

Abstract: A method for performing self-interference cancellation by a device using an FDR mode comprises a step for performing nonlinear digital self-interference cancellation on the basis of a condition defined for the nonlinear digital self-interference cancellation, wherein the defined condition can comprise information about the order of a self-interference component to be considered for the nonlinear digital self-interference cancellation in correspondence with transmission power of the device.

公开(公告)号：US20180160432A1

公开(公告)日：2018-06-07

申请号：US15578512

申请日：2016-01-26

Applicant: LG ELECTRONICS INC.

Inventor： Dongkyu KIM ,  Hyunsoo KO ,  Kwangseok NOH ,  Sangrim LEE ,  Hojae LEE

IPC: H04W72/08 ,  H04W72/04 ,  H04L5/00 ,  H04L5/14

CPC classification number: H04W72/082 ,  H04B1/525 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0094 ,  H04L5/14 ,  H04L25/02 ,  H04L25/03 ,  H04W72/044

Abstract: A method for transmitting reference signal (RS) allocation mode information by a device operating in a full duplex radio (FDR) mode comprises the steps of: determining to change an RS allocation mode from a first RS allocation mode to a second RS allocation mode for nonlinear component estimation of a residual self-interference signal after antenna and analog self-interference cancellation; and transmitting information about the changed second RS allocation mode to a counterpart node, wherein the first RS allocation mode and second RS allocation mode are distinguished from each other on the basis of whether or not RSs, used for nonlinear component estimation of the residual self-interference signal, are additionally transmitted.

公开(公告)号：US20180091346A1

公开(公告)日：2018-03-29

申请号：US15563485

申请日：2015-10-14

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim LEE ,  Hyunsoo KO ,  Jaehoon CHUNG ,  Kwangseok NOH ,  Dongkyu KIM

IPC: H04L27/26

CPC classification number: H04L27/265 ,  H04L27/2605 ,  H04L27/2628 ,  H04L27/2634 ,  H04L27/2665

Abstract: A method for a receiving side processing a signal in a wireless communication system according to the present invention may comprise the steps of: receiving, from a transmitting side, information for the length, in a band where the receiving side is allocated, of a band pass filter to be applied to a transmission signal of the transmitting side and the length of the greatest band pass filter applied to a time interval identical to the transmission signal; and on the basis of the information for the length of a band pass filter to be applied to a transmission signal of the transmitting side and the length of the greatest band pass filter applied to a time interval identical to the transmission signal, setting an N Fast Fourier Transform (FFT) window starting point for detecting the transmission signal.

公开(公告)号：US20180083717A1

公开(公告)日：2018-03-22

申请号：US15559256

申请日：2016-03-18

Applicant: LG ELECTRONICS INC.

Inventor： Kwangseok NOH ,  Dongkyu KIM ,  Hyunsoo KO ,  Sangrim LEE

IPC: H04B15/02 ,  H04B1/54 ,  H04W52/04

CPC classification number: H04B15/02 ,  H04B1/525 ,  H04B1/54 ,  H04W52/04

Abstract: An apparatus for removing self-interference in an environment supporting an FDR method according to the present invention may comprise: an analogue self-interference removal unit that is constructed to remove a first analogue self-interference by subtracting a self-interference signal received through a first delay circuit connected between an RF transmission chain and an RF reception chain of the apparatus from a self-interference signal received at a first circuit of the RF reception chain of the apparatus, and that is constructed to remove a second analogue self-interference by subtracting a self-interference signal received through a second delay circuit connected between the RF transmission chain and the RF reception chain of the apparatus from a self-interference signal received at a second circuit of the RF reception chain of the apparatus; and a processor that is constructed to determine whether the first and the second analogue self-interference removals were respectively successful on the basis of the respective residual self-interference signals that are left after removing the first and the second analogue self-interferences.

公开(公告)号：US20180070192A1

公开(公告)日：2018-03-08

申请号：US15691481

申请日：2017-08-30

Applicant: LG ELECTRONICS INC.

Inventor： Sangrim LEE ,  Byounghoon KIM

IPC: H04W4/00 ,  H04W72/04 ,  H04L27/26 ,  H04W52/02 ,  H04W72/08

CPC classification number: H04W4/70 ,  H04L27/2628 ,  H04W52/0225 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/085 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/25

Abstract: A method for transmitting an uplink signal by a user equipment on a carrier where multiple subbands, each having different subcarrier spacing, are multiplexed may include: generating M modulated symbols by modulating uplink data; repeating the M modulated symbols in both upper and lower frequency blocks, which are adjacent to a predetermined frequency block for the M modulated symbols and have the same size as that of the predetermined frequency block; obtaining a tapered pulse by multiplying a total of 3M modulated symbols, which are a result of the repetition, and a total of 3M windowing weight values in an element-wise manner; and transmitting the tapered pulse after performing an inverse Fourier transform, wherein the user equipment can restrict leakage power to subbands unsynchronized with its operating subband to be equal to or lower than a threshold by adjusting a tapering length of the tapered pulse.

公开(公告)号：US20180042045A1

公开(公告)日：2018-02-08

申请号：US15555058

申请日：2015-03-09

Applicant: LG ELECTRONICS INC.

Inventor： Kukheon CHOI ,  Hyunsoo KO ,  Jaehoon CHUNG ,  Kwangseok NOH ,  Dongkyu KIM ,  Sangrim LEE

IPC: H04W74/02 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04W74/02 ,  H04B7/063 ,  H04B7/0695 ,  H04W16/14 ,  H04W16/28 ,  H04W48/16 ,  H04W74/08 ,  H04W88/10

Abstract: The present invention relates to methods for determining whether to perform millimeter wave (mmWave) scanning in a mmWave system, and a device supporting same. The method for a terminal performing mmWave scanning in a wireless access system supporting mmWave technology, according to one embodiment of the present invention, comprises the steps of: attempting to detect a mmWave pilot signal by monitoring a mmWave pilot detection window in a mmWave band; and transmitting, to an uplink of a legacy band, a feedback signal for indicating whether the mmWave pilot signal is detected, wherein the method may further comprise the step of, if the mmWave pilot signal is detected, performing mmWave ray scanning with a base station, or the step of, if the mmWave pilot signal is not detected, determining whether to perform mmWave beam scanning or whether to perform legacy communication.

公开(公告)号：US20180041988A1

公开(公告)日：2018-02-08

申请号：US15555010

申请日：2016-04-25

Applicant: LG ELECTRONICS INC.

Inventor： Hojae LEE ,  Hyunsoo KO ,  Kukheon CHOI ,  Kwangseok NOH ,  Dongkyu KIM ,  Sangrim LEE

IPC: H04W72/02 ,  H04W72/04 ,  H04W56/00

CPC classification number: H04W72/02 ,  H04J11/0036 ,  H04L1/0001 ,  H04L1/1854 ,  H04L5/0014 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0055 ,  H04L5/0069 ,  H04L5/008 ,  H04L5/0091 ,  H04W4/70 ,  H04W56/00 ,  H04W56/001 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446

Abstract: A method for supporting a sporadic high-capacity packet service by a terminal may comprise the steps of: receiving, from a base station, control information including pre-defined timing information for synchronization and resource allocation information associated with the terminal; when uplink traffic occurs, performing transmission synchronization on the basis of the pre-defined timing information for synchronization; selecting a resource for uplink data transmission on the basis of the resource allocation information; and transmitting uplink data through the selected resource.