Patents by Inventor Sangrim LEE

Sangrim LEE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10461980
    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.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: October 29, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangrim Lee, Hyunsoo Ko, Jaehoon Chung, Kwangseok Noh, Dongkyu Kim
  • Patent number: 10455503
    Abstract: A method for monitoring a downlink control channel in a wireless communication system and an apparatus for the method are disclosed. More specifically, a method for monitoring a downlink control channel of a user equipment (UE) in a wireless communication system comprises receiving, by the UE, configuration information of a first discontinuous reception (DRX) mode based on a first transmission time interval (TTI) and configuration information of a second DRX mode based on a second TTI from an evolved-NodeB (eNB); and monitoring, by the UE, a first downlink control channel in a first DRX listening interval within a first DRX cycle based on the configuration information of the first DRX mode and a second downlink control channel in a second DRX listening interval within a second DRX cycle based on the configuration information of the second DRX mode, wherein the second DRX cycle is set to be shorter than the first DRX cycle.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: October 22, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Eunjong Lee, Jaehoon Chung, Genebeck Hahn, Jinmin Kim, Kukheon Choi, Kwangseok Noh, Sangrim Lee
  • Patent number: 10454521
    Abstract: A method and apparatus for randomization of interference in a cellular Internet of things (IoT) system is disclosed. The method for randomization of interference in the cellular IoT system may comprise the steps of: allocating a radio resource for a physical broadcast channel (PBCH) by a base station; and transmitting downlink data to a plurality of terminals through the PBCH by the base station on the basis of a broadcast, wherein the PBCH may be transmitted on N (herein, N is natural number) slots, the radio resource may be determined on the basis of frequency hopping, and the frequency hopping may be performed in a plurality of frequency areas included in the entire whole frequency bandwidth.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: October 22, 2019
    Assignee: LG Electronics Inc.
    Inventors: Hyunsoo Ko, Bonghoe Kim, Yunjung Yi, Sangrim Lee
  • Patent number: 10454634
    Abstract: A method for a base station to allocate resources for supporting a plurality of wireless communication modes in a wireless system according to the present invention comprises the steps of: allocating, using frequency-division multiplexing, a first zone composed of orthogonal frequency division multiplexing (OFDM) symbols and a second zone composed of generalized frequency division multiplexing (GFDM) symbols on time and frequency domains; and allocating a predetermined number of guard subcarriers to the boundary between the first zone and the second zone, wherein the predetermined number is determined on the basis of the number of sub-symbols of the GFDM symbols of the second zone.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: October 22, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangrim Lee, Hyunsoo Ko, Kukheon Choi, Kwangseok Noh, Dongkyu Kim
  • Patent number: 10447505
    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.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: October 15, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongkyu Kim, Hyunsoo Ko, Kukheon Choi, Kwangseok Noh, Sangrim Lee, Hojae Lee
  • Publication number: 20190312623
    Abstract: In an aspect of the present invention, a method for transmitting channel state information (CSI) of terminal in a wireless communication system may include: receiving a CSI-reference signal (RS); generating a first matrix for a channel based on the CSI-RS; generating a second matrix having a lower dimension than the first matrix by calculating the first matrix and an orthogonal beam matrix having a lower dimension than the first matrix; and transmitting to a base station information on the second matrix and/or the orthogonal beam matrix as the CSI, in which the orthogonal beam matrix may be a matrix including a plurality of orthogonal beams orthogonal to each other as elements.
    Type: Application
    Filed: November 3, 2017
    Publication date: October 10, 2019
    Inventors: Haewook PARK, Heejin KIM, Sangrim LEE, Jiwon KANG, Kijun KIM
  • Patent number: 10439776
    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.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: October 8, 2019
    Assignee: LG Electronics Inc.
    Inventors: Dongkyu Kim, Kilbom Lee, Kwangseok Noh, Sangrim Lee, Hyunsoo Ko, Kukheon Choi
  • Publication number: 20190305924
    Abstract: A method for allocating resources by a Base Station (BS) in a wireless communication system is disclosed. The method includes configuring a Resource Block Group (RBG) dependent on whether a User Equipment (UE) operates in Full Duplex Radio (FDR) mode or Half Duplex (HD) mode, and allocating resources to the UE in units of the configured RBG. The RBG includes a plurality of Resource Blocks (RBs).
    Type: Application
    Filed: January 23, 2017
    Publication date: October 3, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Dongkyu KIM, Kwangseok NOH, Sangrim LEE, Hojae LEE
  • Publication number: 20190305877
    Abstract: Provided are a method and an apparatus for competition-based transmitting of uplink data in a wireless communication system to which a non-orthogonal multiple access scheme is applied. Particularly, a terminal receives, from a base station, information relating to a predefined modulation pattern for non-orthogonal multiple access. The information relating to the predefined modulation pattern includes a modulation pattern index. The modulation pattern index indicates designation of a terminal-specific modulation order for each resource element in a resource used overlappingly by multiple terminals. The terminal transmits data to the base station using the modulation order designated to each of the resource elements on the basis of the information relating to the predetermined modulation pattern.
    Type: Application
    Filed: April 25, 2017
    Publication date: October 3, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Hojae LEE, Kijun KIM, Byounghoon KIM, Sangrim LEE
  • Patent number: 10432324
    Abstract: A method for performing self-interference removal by a communication device using a full-duplex radio (FDR) mode, according to an embodiment of the present invention, comprises a step for branching a residual self-interference signal, after removal of an antenna self-interference signal, into a plurality of reception RF chains. And the present invention enables determining of whether or not digital self-interference removal is to be performed after combining the plurality of self-interference signals, which have been branched, on the basis of a predefined threshold and strength of each of the plurality of self-interference signals that have been branched.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: October 1, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongkyu Kim, Kwangseok Noh, Hyunsoo Ko, Kukheon Choi, Sangrim Lee
  • Publication number: 20190289592
    Abstract: A method for transmitting uplink (UL) data requiring low latency in a wireless communication system according to the present invention, the method performed by a user equipment comprises transmitting contention PUSCH resource block (CPRB) indication information used for identifying a particular UE and/or particular data to an eNB; transmitting UL data to the eNB through CPRB resources of a contention based PUSCH (CP) zone; and receiving a hybrid automatic retransmit request (HARQ) response with respect to the UL data from the eNB through a physical hybrid ARQ indicator channel (PHICH).
    Type: Application
    Filed: April 29, 2019
    Publication date: September 19, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Eunjong LEE, Jaehoon CHUNG, Genebeck HAHN, Jinmin KIM, Kukheon CHOI, Kwangseok NOH, Sangrim LEE
  • Publication number: 20190289623
    Abstract: According to an embodiment of the present invention, a method is disclosed for transmitting a signal on the basis of a competition-based non-orthogonal multiple access scheme, by means of a terminal in a wireless communication system. At this time, the method for transmitting a signal comprises: a step of transmitting a first codeword on the basis of the competition-based NoMA scheme; a step of receiving a negative response to the first codeword transmission from a base station; a step of selecting a second codeword, taking into account a magnitude vector and a correlation of the first codeword; and a step of transmitting the selected second codeword on the basis of the competition-based NoMA scheme.
    Type: Application
    Filed: April 28, 2017
    Publication date: September 19, 2019
    Inventors: Myeongjin KIM, Sangrim LEE, Hojae LEE, Dongkyu KIM, Kwangseok NOH
  • Patent number: 10420062
    Abstract: A method for a drone to measure a location of a user equipment in a wireless communication system can be provided according to one embodiment of the present specification. In this case, the method can include the steps of performing an initial access procedure with a base station, receiving SRS configuration information of the user equipment from the base station, receiving an SRS from the user equipment based on the SRS configuration information of the user equipment, and transmitting location measurement information, which is measured based on the received SRS, to the base station.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: September 17, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Myeongjin Kim, Sangrim Lee
  • Publication number: 20190281619
    Abstract: A method by which a terminal transmits a scheduling request (SR) in a wireless communication system, according to the present invention, comprises the steps of: receiving information on periodicity of SR transmission and a resource region for periodical SR transmission; receiving downlink control information (DCI) which includes a field related to an SR transmission region in a first subframe; and confirming whether the resource for the SR transmission of the terminal is allocated in the first subframe, even if the first subframe is not the subframe for the periodical SR transmission of the terminal, according to the periodicity of the SR transmission, when a SR field indicates a specific value.
    Type: Application
    Filed: January 31, 2017
    Publication date: September 12, 2019
    Applicant: LG Electronics Inc.
    Inventors: Sangrim Lee, Hojae Lee, Dongkyu Kim, Myeongjin Kim, Kwangseok Noh
  • Patent number: 10411869
    Abstract: A method for transmitting and receiving data in a wireless communication system and an apparatus for the method are disclosed. More specifically, a method for transmitting downlink data in a wireless communication system comprises transmitting, by an eNB, first downlink data through a physical downlink shared channel (PDSCH) region according to a radio frame structure based on a first transmission time interval (TTI); and transmitting, by the eNB, second downlink data through a short PDSCH (sPDSCH) region according to a radio frame structure based on a second TTI, wherein downlink control information (DCI) related to the second downlink data is transmitted through a physical downlink control channel (PDCCH) or a short PDCCH (sPDCCH).
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: September 10, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Eunjong Lee, Jaehoon Chung, Genebeck Hahn, Jinmin Kim, Kukheon Choi, Kwangseok Noh, Sangrim Lee
  • Patent number: 10404315
    Abstract: A method for performing self-interference cancellation (SIC) by an apparatus of a full duplex radio (FDR) mode in a wireless communication system including: performing a channel estimation of a received self-interference reference signal; calculating a power value of two order components of a non-linear self-interference signal based on the channel estimation; and establishing a non-linear digital self-interference cancellation order to be considered in the self-interference cancellation based on the power value of each for the two order components.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: September 3, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangrim Lee, Dongkyu Kim, Hyunsoo Ko, Kwangseok Noh, Hojae Lee
  • Publication number: 20190268113
    Abstract: A method for receiving orthogonal time, frequency and space (OFTS) basis allocation information by an user equipment in a wireless communication system using an OTFS transmission scheme includes receiving control information including information on an OTFS basis size N from a base station; and receiving data on OTFS bases of a predetermined size indexed according to a pre-defined rule in an N×N OTFS transform matrix on time and frequency domains corresponding to the OTFS basis size, wherein the OTFS bases of the OTFS basis size N is represented into an N×N OTFS transform matrix, wherein in the N×N OTFS transform matrix, a row index represents a cyclic frequency shift index, and a column index represents a cyclic time shift index, wherein the indexing according to the pre-defined rule includes indexing the OTFS bases of the predetermined size in an order such that the cyclic frequency shift and the cyclic time shift in the N×N OTFS transform matrix are maximized.
    Type: Application
    Filed: July 27, 2016
    Publication date: August 29, 2019
    Applicant: LG Electronics Inc.
    Inventors: Hojae LEE, Sangrim LEE, Kwangseok NOH, Dongkyu KIM
  • Publication number: 20190245631
    Abstract: A method by which a base station reduces an operation for removing self-interference in an FDR environment can comprise the steps of receiving estimated channel state information from a terminal, determining a beam forming value for transmission beamforming on the basis of the received channel state information, and transmitting a downlink signal by applying the determined beamforming value.
    Type: Application
    Filed: July 7, 2016
    Publication date: August 8, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Dongkyu KIM, Kwangseok NOH, Sangrim LEE, Hojae LEE
  • Publication number: 20190245664
    Abstract: According to one embodiment, a method by which a terminal transmits a signal in a wireless communication system on the basis of a contention-based non-orthogonal NOMA scheme can be provided, wherein the method for transmitting the signal can comprise the steps of: allocating a resource pool to which a signal is to be transmitted on the basis of the contention-based NOMA scheme; and transmitting data and a UE ID through the resource pool on the basis of the contention-based NOMA scheme, wherein a plurality of UE ID regions exist in the resource pool, and the UE ID can be allocated to a first region, which is one of the plurality of UE ID regions, and then transmitted.
    Type: Application
    Filed: May 8, 2017
    Publication date: August 8, 2019
    Inventors: Myeongjin KIM, Sangrim LEE, Hojae LEE, Dongkyu KIM, Kwangseok NOH
  • Patent number: 10367629
    Abstract: A method for estimating, by a device using an FDR scheme, a non-linear self-interference signal channel comprises a step of estimating a non-linear self-interference signal channel using a first sequence set included in a predefined first sequence set, wherein the predefined first sequence set is defined in consideration of non-linear self-interference signal components in an RF transmission chain and an RF reception chain of the device.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: July 30, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongkyu Kim, Hyunsoo Ko, Kilbom Lee, Kukheon Choi, Kwangseok Noh, Sangrim Lee