Patents by Inventor Yu Jin Noh

Yu Jin Noh 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: 10090979
    Abstract: A method for transmitting a sounding reference signal in a MIMO wireless communication system and an apparatus therefor are disclosed. The method for transmitting sounding reference signals (SRSs) in a MIMO wireless communication system comprises receiving sounding reference signal parameters from a base station; receiving information of the number of sounding reference signals which will be transmitted at a transmission time instant from the base station; if a plurality of sounding reference signals are provided, generating the sounding reference signals corresponding to each of the plurality of antennas by using the sounding reference signal parameters; and transmitting the generated sounding reference signals to the base station through their corresponding antennas at a specific transmission instant.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: October 2, 2018
    Assignee: LG Electronics Inc.
    Inventors: Bong Hoe Kim, Byeong Woo Kang, Yu Jin Noh, Hak Seong Kim, Dae Won Lee
  • Patent number: 10085209
    Abstract: A communication method that includes transmitting a power save multi-poll (PSMP) frame containing a power save mode (PSM) of a non-access point (AP) station (STA) to a first station and to a second station which are paired with an AP on the basis of multiple input multiple output (MIMO) technology. Information on the PSM indicates the point in time of starting a downlink transmission period, the duration of the downlink transmission period, and transmission object station identification information. The method further involves transmitting a data frame to the first station and to the second station on the basis of the MIMO technology during the downlink transmission period. The transmission object station identification information indicates a group identifier for indicating an object station group including the first station and the second station.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: September 25, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Yu Jin Noh, Dae Won Lee, Yong Ho Seok
  • Publication number: 20180241534
    Abstract: A method for generating a channel quality indicator (CQI) in a mobile communication system is presented. The method includes grouping a number of subcarriers to form at least one channel quality indicator subband for generating a channel quality indicator, and generating a channel quality indicator in each channel quality indicator subband, wherein a size of each channel quality indicator subband is dependent on a system bandwidth value and is an integer multiple of a downlink frequency resource unit size, wherein the downlink frequency resource unit size is prescribed according to the system bandwidth value.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 23, 2018
    Applicant: LG ELECTRONICS INC.
    Inventors: Dong Wook ROH, Bong Hoe KIM, Joon Kui AHN, Yu Jin NOH, Dong Youn SEO, Ki Jun KIM
  • Patent number: 10038536
    Abstract: The present application discloses a method in which a base station transmits a reference signal sequence in a wireless communication system. In detail, the method comprises the steps of: generating a pseudo-random sequence using a first m-sequence and a second m-sequence; generating the reference signal sequence using the pseudo-random sequence; and transmitting the reference signal to a mobile station via antenna ports different from one another. The second m-sequence has an initial value containing parameters for discriminating reference signal sequences among users.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: July 31, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Bong Hoe Kim, Byeong Woo Kang, Dae Won Lee, Yu Jin Noh, Ki Jun Kim, Dong Wook Roh
  • Patent number: 9985769
    Abstract: A method for generating a channel quality indicator (CQI) in a mobile communication system is presented. The method includes grouping a number of subcarriers to form at least one channel quality indicator subband for generating a channel quality indicator, and generating a channel quality indicator in each channel quality indicator subband, wherein a size of each channel quality indicator subband is dependent on a system bandwidth value and is an integer multiple of a downlink frequency resource unit size, wherein the downlink frequency resource unit size is prescribed according to the system bandwidth value.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: May 29, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Dong Wook Roh, Bong Hoe Kim, Joon Kui Ahn, Yu Jin Noh, Dong Youn Seo, Ki Jun Kim
  • Patent number: 9954593
    Abstract: A method for transmitting a reference signal for channel measurement (CSI-RS) to a user equipment; a base station therefore; a method for receiving a CSI-RS; and the user equipment therefore are discussed. The method for transmitting a CSI-RS according to one embodiment includes transmitting CSI-RS pattern information for indicating a pattern of time-frequency resource to be nulled, hereinafter referred to as null CSI-RS pattern, and CSI-RS subframe information for indicating in which subframe the null CSI-RS pattern occurs; and nulling a time-frequency resource corresponding to the null CSI-RS pattern in a subframe corresponding to the CSI-RS subframe information, hereinafter referred to as null CSI-RS subframe, based on the CSI-RS pattern information and the CSI-RS subframe information. The CSI-RS subframe information includes information indicating a periodic interval with which the null CSI-RS subframe occurs. The periodic interval corresponds to a plurality of subframes.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 24, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Yu Jin Noh, Dong Wook Roh, Joon Kui Ahn, Byeong Woo Kang, Dae Won Lee, Bong Hoe Kim, Dong Youn Seo
  • Publication number: 20180109405
    Abstract: A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 19, 2018
    Inventors: Dae Won LEE, Dong Wok ROH, Byeong Woo KANG, Yong Ho SEOK, Yu Jin NOH, Bong Hoe KIM
  • Publication number: 20180098313
    Abstract: According to one embodiment, a method for a wireless local area includes: generating a medium access control (MAC) protocol data unit (MPDU) to be transmitted to a target station; generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU) by attaching a PLCP preamble to the MPDU; selecting a transmission channel; and transmitting the PPDU to the target station over the transmission channel. Selecting the transmission channel includes: performing clear channel assessment (CCA) on a first channel to determine whether the first channel is idle; and only after it is determined that the first channel is idle, selecting the first channel and at least one idle second channel as the transmission channel. The PLCP preamble includes channel allocation information indicating a bandwidth of the transmission channel.
    Type: Application
    Filed: November 30, 2017
    Publication date: April 5, 2018
    Applicant: LG ELECTRONICS INC.
    Inventors: Yu Jin NOH, Dae Won LEE, Byeong Woo KANG, Bong Hoe KIM, Yong Ho SEOK
  • Patent number: 9913168
    Abstract: A method and device for receiving a data block in a wireless communication system, the method performed by a receiver. The method includes: receiving a physical layer protocol data unit (PPDU) from a transmitter over an operating channel, the PPDU including a signal field, a Very High Throughput-Signal-A (VHT-SIG-A) field, a Very High Throughput-Signal-B (VHT-SIG-B) field and a padded data block, generating a first data block by removing zero or more physical padding bits from the padded data block in a physical layer; and generating a second data block by removing zero or more Medium Access Control (MAC) padding bits from the first data block in a MAC layer.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: March 6, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Yu Jin Noh, Dae Won Lee, Yong Ho Seok
  • Publication number: 20180049194
    Abstract: A method is provided for transmitting a signal by a station in a wireless local area network (WLAN). The station obtains a transmission opportunity (TXOP) indicating a time duration used for transmission of a plurality of data units. The station transmits, during the TXOP, an initial data unit of the plurality of data units. The initial data unit comprises a control field indicating a transmit bandwidth of the initial data unit. The station selects a transmit bandwidth of a non-initial data unit of the plurality of data units to be narrower than the transmit bandwidth of the initial data unit. The station transmits, during the TXOP, the non-initial data unit. The non-initial data unit comprises a control field indicating the transmit bandwidth of the non-initial data unit.
    Type: Application
    Filed: October 6, 2017
    Publication date: February 15, 2018
    Applicant: LG ELECTRONICS INC.
    Inventors: Yu Jin NOH, Byeong Woo KANG, Dae Won LEE, Yong Ho SEOK
  • Publication number: 20180035414
    Abstract: A User Equipment (UE) receives a Physical Downlink Control Channel (PDCCH) at subframe k and decodes at the subframe k a set of PDCCH candidates including L control channel elements (CCEs). The L CCEs are contiguously located from a position given by using a variable of Yk and a modulo (N/L) operation, where N represents a total number of CCEs in the subframe k, Yk is defined by Yk=(A*Yk?1)mod D, and A and D are predetermined constant values. When k=0, Y?1 is determined based on a UE identifier having 16-bits.
    Type: Application
    Filed: October 12, 2017
    Publication date: February 1, 2018
    Inventors: Dae Won LEE, Ki Jun KIM, Dong Wook ROH, Yu Jin NOH, Joon Kui AHN, Jung Hoon LEE
  • Patent number: 9876882
    Abstract: A method for transmitting data in a wireless local area network, the method comprising: receiving, by a receiving station, a physical layer protocol data unit (PPDU) from a transmitting station, the PPDU including a signal-A field, the signal-A field including a bandwidth in which the PPDU is received, decoding the PPDU, wherein, when the PPDU is used for single-user (SU) transmission, the PPDU is decoded with assuming that the PPDU does not include a signal-B field, and, when the PPDU is used for multi-user (MU) transmission, the PPDU is decoded with assuming that the PPDU include the signal-B field, and wherein the signal-B field includes a modulation and coding scheme (MCS) used for the receiving station.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: January 23, 2018
    Assignee: LG ELECTRONICS, INC.
    Inventors: Dae Won Lee, Yu Jin Noh, Byeong Woo Kang, Yong Ho Seok
  • Patent number: 9876662
    Abstract: A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: January 23, 2018
    Assignee: Wi-Fi One, LLC
    Inventors: Dae Won Lee, Dong Wook Roh, Byeong Woo Kang, Yong Ho Seok, Yu Jin Noh, Bong Hoe Kim
  • Patent number: 9876661
    Abstract: A method and a transmitting station for transmitting data in a wireless local area network are discussed. The method according to an embodiment includes generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU), the PPDU including a Very High Throughput Signal (VHT-SIG) field and a PLCP Service Data Unit (PSDU); and transmitting the PPDU to a receiving station. The VHT-SIG field includes a class type and identification information, the class type indicates that the PPDU is transmitted by an access point (AP) or a non-AP station, the identification information includes a partial identifier formed from a Basic Service Set Identifier (BSSID), and the partial identifier has a length shorter than a length of the BSSID.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: January 23, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Dae Won Lee, Byeong Woo Kang, Yu Jin Noh, Bong Hoe Kim, Yong Ho Seok
  • Publication number: 20180006692
    Abstract: A method and apparatus for allowing a UE to transmit uplink signals using a MIMO scheme are disclosed. In order to maintain good Peak power to Average Power Ratio (PAPR) or Cubic Metric (CM) properties when the UE transmits uplink signals using the MIMO scheme, the UE uses a precoding scheme based on a precoding matrix established in a manner that one layer is transmitted to each antenna in specific rank transmission.
    Type: Application
    Filed: September 19, 2017
    Publication date: January 4, 2018
    Applicant: LG ELECTRONICS INC.
    Inventors: Yu Jin NOH, Ki Jun KIM, Dong Wook ROH, Byeong Woo KANG, Dae Won LEE, Bong Hoe KIM, Dong Youn SEO
  • Patent number: 9860877
    Abstract: According to one embodiment, a method for a wireless local area includes: generating a medium access control (MAC) protocol data unit (MPDU) to be transmitted to a target station; generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU) by attaching a PLCP preamble to the MPDU; selecting a transmission channel; and transmitting the PPDU to the target station over the transmission channel. Selecting the transmission channel includes: performing clear channel assessment (CCA) on a first channel to determine whether the first channel is idle; and only after it is determined that the first channel is idle, selecting the first channel and at least one idle second channel as the transmission channel. The PLCP preamble includes channel allocation information indicating a bandwidth of the transmission channel.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: January 2, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Yu Jin Noh, Dae Won Lee, Byeong Woo Kang, Bong Hoe Kim, Yong Ho Seok
  • Publication number: 20170373799
    Abstract: The present invention relates to a method and apparatus for acknowledgement (ACK) transmission in a WLAN. A station receives a plurality of data frames from a plurality of other stations and then transmits an ACK for the plurality of data frames to the plurality of stations. The ACK is a multi-user (MU) block ACK frame which includes a plurality of block ACKs for the plurality of stations. One block ACK includes at least one ACK for at least one data frame that is received from one station.
    Type: Application
    Filed: September 7, 2017
    Publication date: December 28, 2017
    Applicant: LG ELECTRONICS INC.
    Inventors: Yu Jin NOH, Dae Won LEE, Yong Ho SEOK
  • Patent number: 9853785
    Abstract: A method for transmitting a control signal, performed by a wireless device. The method according to one embodiment includes allocating resource elements (REs) for a control channel; and transmitting the control signal through the Res. Each RE in the REs for the control channel is associated with one out of two antenna ports. The two antenna ports are included in a plurality of antenna ports used for transmitting demodulation reference signals (DM RS).
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: December 26, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Han Byul Seo, Dae Won Lee, Byoung Hoon Kim, Hak Seong Kim, Yu Jin Noh
  • Patent number: 9814033
    Abstract: A method for efficiently transmitting and receiving control information through a Physical Downlink Control Channel (PDCCH) is provided. When a User Equipment (UE) receives control information through a PDCCH, the received control information is set to be decoded in units of search spaces, each having a specific start position in the specific subframe. Here, a modulo operation according to a predetermined first constant value (D) is performed on an input value to calculate a first result value, and a modulo operation according to a predetermined first variable value (C) corresponding to the number of candidate start positions that can be used as the specific start position is performed on the calculated first result value to calculate a second result value and an index position corresponding to the second result value is used as the specific start position. Transmitting control information in this manner enables a plurality of UEs to efficiently receive PDCCHs without collisions.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: November 7, 2017
    Assignee: Optis Cellular Technology, LLC
    Inventors: Dae Won Lee, Ki Jun Kim, Dong Wook Roh, Yu Jin Noh, Joon Kui Ahn, Jung Hoon Lee
  • Patent number: 9807765
    Abstract: A method is provided for transmitting a data frame by a station in a wireless local area network. The station obtains a transmission opportunity (TXOP) for a bandwidth, the TXOP indicating an interval of time during which the station has a right to initiate frame exchange sequences onto wireless medium. The station sets a transmit bandwidth parameter of a non-initial physical layer protocol data unit (PPDU) of a plurality of PPDUs to be transmitted during the TXOP based on a transmit bandwidth parameter of a preceding PPDU of the plurality of PPDUs. The transmit bandwidth parameter of the non-initial PPDU is set to be same or narrower than the transmit bandwidth parameter of the preceding PPDU. A bandwidth indicated by the transmit bandwidth parameter of the non-initial PPDU or the preceding PPDU includes at least one of 20 MHz, 40 MHz and 80 MHz. The station transmits the non-initial PPDU during the TXOP.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: October 31, 2017
    Assignee: LG Electronics Inc.
    Inventors: Yu Jin Noh, Byeong Woo Kang, Dae Won Lee, Yong Ho Seok