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: 10623151
    Abstract: A method for a terminal performing communication using a flexible frequency division duplex (FDD) frame in a wireless communication system comprises the step of transmitting and receiving a signal using the flexible FDD frame, wherein the flexible FDD frame comprises a downlink band allocated from the wireless communication system as a resource for a downlink, and an uplink band allocated as a resource for an uplink, wherein the uplink band may comprise a downlink sub-band allocated as a resource for the downlink by a base station for the flexible FDD scheme.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: April 14, 2020
    Assignee: LG Electronics Inc.
    Inventors: Dongkyu Kim, Hyunsoo Ko, Kwangseok Noh, Sangrim Lee, Hojae Lee
  • Publication number: 20200106490
    Abstract: A method for transmitting feedback information by a terminal may comprise: multiplying each of a left side and a right side of a matrix, which is related to a channel measured by the terminal, by a transformation matrix, so as to obtain a first matrix; performing a first transformation which transforms elements other than a predetermined number of elements having a larger size among elements of the first matrix to zero, or performing a second transformation which transforms elements other than elements exceeding a threshold value to zero, so as to obtain a second matrix; quantizing the second matrix so as to obtain a third matrix; configuring a vector by selecting a specific portion in the third matrix according to a predetermined pattern; configuring, into bits, an output obtained by multiplying the configured vector by a sensing matrix for compression sensing; and transmitting the output bits to a base station.
    Type: Application
    Filed: May 21, 2018
    Publication date: April 2, 2020
    Inventors: Sangrim LEE, Woonghee LEE, Hojae LEE
  • Publication number: 20200106574
    Abstract: Provided are a method and equipment for transmitting uplink data by using a non-orthogonal code multiple access technique in a wireless communication system. Particularly, a terminal receives, from a base station, allocation information on physical resource blocks. The terminal acquires a spreading factor on the basis of the number of physical resource blocks included in the allocation information. The terminal determines a NoMA codebook set on the basis of the spreading factor. The terminal transmits uplink data generated on the basis of terminal-specific codewords included in the NoMA codebook set.
    Type: Application
    Filed: June 7, 2018
    Publication date: April 2, 2020
    Inventors: Hojae Lee, Sangrim Lee
  • Publication number: 20200100237
    Abstract: Provided in various embodiments are a method by which a D2D terminal transmits a reference signal (RS) for a PDoA in a wireless communication system, and a device therefor. Disclosed are a method by which a D2D terminal transmits a reference signal (RS) for a PDoA, and a device therefor, the method comprising the steps of: determining, on the basis of the maximum value of a difference between indexes of subcarriers of a resource block for the transmission of a reference signal (RS), an index set for RS mapping among preconfigured index sets; mapping the RS to the subcarriers of the resource block having indexes corresponding to each of the indexes included in the index set for the RS mapping; and transmitting the resource block to which the RS is mapped, wherein the preconfigured index sets include indexes in which differences between two pairs of indexes are not the same for each number of indexes.
    Type: Application
    Filed: April 24, 2018
    Publication date: March 26, 2020
    Inventors: Hyukjin CHAE, Myeongjin KIM, Sangrim LEE
  • Publication number: 20200099561
    Abstract: According to one embodiment of the present invention, a method by which a first wireless device receives a reference signal for distance measurement in a wireless communication system can comprise the steps of: receiving, from a second wireless device, a first reference signal including a first sinusoidal signal having a first angular frequency and a second sinusoidal signal having a second angular frequency; performing fast Fourier transform (FFT) on the first reference signal; acquiring a phase difference between the first sinusoidal signal and the second sinusoidal signal on the basis of the FFT result; and transmitting, to the second wireless device, a second reference signal for the distance measurement and a third reference signal indicating information on the phase difference. The first wireless device is capable of communicating with at least one of another wireless device, a wireless device related to an autonomous driving vehicle, a base station or a network.
    Type: Application
    Filed: April 3, 2018
    Publication date: March 26, 2020
    Applicant: LG ELECTRONICS INC.
    Inventors: Sangrim LEE, Hojae LEE, Hanbyul SEO, Sukhyon YOON
  • Publication number: 20200088866
    Abstract: According to one embodiment, a distance technique between a transmitter and a receiver for processing a signal in symbol units is presented. According to the embodiment, the transmitter transmits a transmission signal to the receiver through preset first and second frequencies. Then, the transmitter receives, from the receiver, a reception signal corresponding to the transmission signal. The reception signal includes a first reception component corresponding to the first frequency and a second reception component corresponding to the second frequency. The phase difference set by the receiver is applied between the phase of the first reception component and the phase of the second reception component. The phase difference is set on the basis of the difference between a reception time at which the transmission signal is received by the receiver and a processing time at which the transmission signal is processed in the receiver.
    Type: Application
    Filed: March 22, 2018
    Publication date: March 19, 2020
    Inventors: Hanbyul Seo, Changhwan Park, Sukhyon Yoon, Hyukjin Chae, Jiwon Kang, Kijun Kim, Byounghoon Kim, Joonkui Ahn, Sangrim Lee
  • Patent number: 10595325
    Abstract: A method by which a base station transmits terminal grouping information in a non-orthogonal multiple access scheme can comprise the steps of: grouping terminals sharing the same frequency resource on the basis of any one of a data transmission rate requested by each terminal, scheduling impartiality among the terminal, and a timing distance of each terminal; and allocating reference symbols for each grouped terminal group such that the reference symbols do not overlap for each terminal group in a time domain.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: March 17, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hojae Lee, Hyunsoo Ko, Kukheon Choi, Kwangseok Noh, Dongkyu Kim, Sangrim Lee
  • Publication number: 20200084769
    Abstract: A method for transmitting feedback information by a first user equipment (UE) in a wireless communication system supporting a full duplex radio (FDR) scheme includes measuring, based on information on a second UE received from a base station (BS), an inter-device interference (IDI) related to the second UE; and transmitting, to the BS, feedback information related to the IDI.
    Type: Application
    Filed: November 12, 2019
    Publication date: March 12, 2020
    Applicant: LG ELECTRONICS INC.
    Inventors: Kwangseok NOH, Dongkyu KIM, Hyunsoo KO, Kukheon CHOI, Sangrim LEE, Hojae LEE
  • Publication number: 20200083938
    Abstract: Disclosed are a method for transmitting and receiving channel state information in wireless communication system and an apparatus therefor. Specifically, a method for transmitting, by a user equipment (UE), Channel State Information (CSI) in a wireless communication system may include: receiving, from a base station, a channel state information reference signal (CSI-RS) through multiple antenna ports; and reporting, to the base station, CSI, in which the CSI may include selection information indicating a plurality of codewords used for generating a precoding matrix in a codebook for reporting the CSI, and a power coefficient, a phase offset, and a phase shift value applied to each of the plurality of codewords in terms of a configured bandwidth, and the precoding matrix may be generated in units of subbands within the configured bandwidth based on a linear combination of the power coefficient, the phase offset, and the phase change value.
    Type: Application
    Filed: March 23, 2018
    Publication date: March 12, 2020
    Inventors: Haewook PARK, Kijun KIM, Sangrim LEE
  • Patent number: 10587393
    Abstract: A method for a terminal performing communication using a TDD frame in a wireless communication system may comprise the steps of: receiving a synchronization signal (SS) from one symbol of a first subframe of a TDD frame; and transmitting uplink control information via an uplink control zone comprising at least one last symbol in the first subframe.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: March 10, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hojae Lee, Sangrim Lee, Kwangseok Noh, Dongkyu Kim
  • Patent number: 10582441
    Abstract: A method and apparatus for transmitting system information in a wireless communication system is provided. A base station (BS) configures a physical broadcast channel (PBCH) in a subband including a set of consecutive subcarriers in a frequency domain, and transmits master information via the PBCH.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: March 3, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yunjung Yi, Bonghoe Kim, Hyunsoo Ko, Sangrim Lee
  • Patent number: 10574315
    Abstract: A method for receiving, by a terminal, a signal on the basis of a non-orthogonal multiple access scheme in a wireless communication system comprises the steps of: receiving, from a base station, control information including information on a codebook selected for the terminal among pre-defined codebooks for non-orthogonal multiple access and information on a codeword selected from the selected codebook; receiving, from the base station, data for the terminal according to scheduling of the control information; and detecting data for the terminal by performing a multi-user detection (MUD) scheme on the basis of the information on the selected codebook and the information on the selected codeword.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: February 25, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hojae Lee, Hyunsoo Ko, Kwangseok Noh, Dongkyu Kim, Sangrim Lee
  • Patent number: 10575287
    Abstract: A method for a terminal transmitting a PUCCH using a FDD frame in a wireless communication system comprises the step of transmitting the PUCCH using two subframes in the FDD frame, wherein the two subframes may each comprise a resource for receiving a downlink in an uplink band.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: February 25, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongkyu Kim, Kwangseok Noh, Sangrim Lee, Hojae Lee
  • Publication number: 20200059949
    Abstract: A method and apparatus for performing a scheduling request for transmitting uplink data in a wireless communication system are provided. Specifically, a terminal receives allocation information for a first SR resource that is semi-statically allocated from a base station. The terminal receives allocation information for a second SR resource dynamically allocated from the base station. The second SR resource is additionally allocated in addition to the first SR resource for a buffer status report (BSR). At this time, the allocation information for the first SR resource comprises: mapping information between the first and second SR resources and buffer size information. The terminal transmits an SR to the base station through the first SR resource or the second SR resource.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 20, 2020
    Applicant: LG ELECTRONICS INC.
    Inventors: Ilmu BYUN, Sangrim LEE, Yunjung YI, Kijun KIM
  • Patent number: 10567150
    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.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: February 18, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangrim Lee, Dongkyu Kim, Hyunsoo Ko, Kwangseok Noh, Hojae Lee
  • Publication number: 20200053789
    Abstract: A method for performing, by a terminal, a contention-based uplink transmission in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: selecting any one of a plurality of codewords and any one of a plurality of demodulation reference signals (DMRS), the plurality of codewords and the plurality of DMRSs being set in a contention resource area for a contention-based uplink transmission; and transmitting, through the contention resource area, uplink data that corresponds to the selected codeword, and the selected DMRS, wherein the DMRS is transmitted in an orthogonal multiple access (OMA) scheme, the uplink data is transmitted in a non-orthogonal multiple access (NOMA) scheme, and the selected DMRS is one of the K DMRSs mapped to the selected codeword, wherein K may be an integer greater than or equal to 1, which is changed according to a DMRS collision occurring in the contention resource area.
    Type: Application
    Filed: August 8, 2017
    Publication date: February 13, 2020
    Inventors: Sangrim LEE, Hojae LEE, Dongkyu KIM, Myeongjin KIM, Kwangseok NOH
  • Publication number: 20200053731
    Abstract: The document relates to a method for performing communication using multiple transmission time interval (TTI) structures in a wireless communication system. In this method, a terminal transmits and receives a signal through a resource region in which a first subframe corresponding to a TTI (short TTI) of a first length and a second subframe corresponding to a TTI (short TTI) of a second length longer than the first length are multiplexed in a frequency divisional multiplexing (FDM) manner, and when a second link direction of a signal transmitted through the second subframe in a specific time interval is different from a first link direction of a signal transmitted through the first subframe, the specific time interval of the second subframe is not used for signal transmission in the second link direction.
    Type: Application
    Filed: October 16, 2019
    Publication date: February 13, 2020
    Applicant: LG ELECTRONICS INC.
    Inventors: Hyunsoo KO, Kwangseok NOH, Dongkyu KIM, Sangrim LEE, Hojae LEE
  • Patent number: 10560245
    Abstract: Disclosed is a method for transmitting and receiving data by a user equipment (UE) in a wireless communication system supporting low latency includes receiving downlink (DL) control information including a transmission time interval (TTI) indication field indicating a short TTI in which low latency data is scheduled, from an eNB through a DL physical channel, and receiving the low latency data from the eNB through a scheduled short TTI on the basis of the received TTI indication field.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: February 11, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Eunjong Lee, Jaehoon Chung, Genebeck Hahn, Jinmin Kim, Kukheon Choi, Kwangseok Noh, Sangrim Lee
  • Publication number: 20200041604
    Abstract: A method for transmitting information for position measurement by a terminal in a wireless communication system. The method for transmitting information for position measurement by a terminal may include the steps of: receiving a reference signal from a base station; and transmitting information for position measurement to the base station on the basis of the reference signal. The information for the position measurement may be information related to a phase difference of arrival (PDOA). The terminal is capable of communicating with at least one of another terminal, a terminal related to an autonomous driving vehicle, the base station or a network.
    Type: Application
    Filed: October 10, 2017
    Publication date: February 6, 2020
    Inventors: Myeongjin KIM, Sangrim LEE, Hojae LEE, Dongkyu KIM
  • Patent number: 10554361
    Abstract: A method for changing reference signal (RS) allocation by a device operating in an FDR scheme may comprise the steps of: determining whether to release an additionally allocated RS according to a transmission power variation of the device or to additionally allocate an RS for channel estimation of a non-linear component of a self-interference signal; and transmitting information on a resource of the RS to be released or information on a resource of the RS to be additionally allocated, according to the determination.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: February 4, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongkyu Kim, Hyunsoo Ko, Kwangseok Noh, Sangrim Lee, Hojae Lee