Patents by Inventor Ki-Hyoung Cho

Ki-Hyoung Cho 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: 11919520
    Abstract: A wheel slip control method for a vehicle is provided, and includes estimating equivalent inertia information of a driving system based on operation information of the driving system while a vehicle travels, determining whether the slip of a drive wheel occurs from the estimated equivalent inertia information of the driving system, determining whether the drive wheel is in an uneven wheel slip state where the slip occurs only in one of a left wheel and a right wheel of the drive wheel from a left wheel speed and a right wheel speed detected by a sensor, if it is determined that the slip of the drive wheel occurs, and controlling an operation of a braking device such that a braking force is applied to the vehicle wheel in which the slip occurs, if it is determined that the vehicle wheel is in the uneven wheel slip state.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: March 5, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Ji Won Oh, Jeong Soo Eo, Ki Mo Sohn, Lee Hyoung Cho
  • Patent number: 9538407
    Abstract: A method of receiving control information in a wireless communication system includes receiving position information for searching at least one downlink control channel, a downlink control channel carrying control information of at least one user equipment, receiving multiplexed downlink control channel in which a plurality of downlink control channels are sequentially multiplexed and sequentially searching the downlink control channel on the multiplexed downlink control channel according to the position information. The number of detection attempts to detect its own control information can be reduced.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: January 3, 2017
    Assignee: LG Electronics Inc.
    Inventors: So Yeon Kim, Min Seok Oh, Ki Hyoung Cho, Seung Hyun Kang, Ji Ae Seok, Ji Wook Chung, Young Seob Lee
  • Publication number: 20150109948
    Abstract: A method of receiving control information in a wireless communication system includes receiving position information for searching at least one downlink control channel, a downlink control channel carrying control information of at least one user equipment, receiving multiplexed downlink control channel in which a plurality of downlink control channels are sequentially multiplexed and sequentially searching the downlink control channel on the multiplexed downlink control channel according to the position information. The number of detection attempts to detect its own control information can be reduced.
    Type: Application
    Filed: December 2, 2014
    Publication date: April 23, 2015
    Inventors: So Yeon Kim, Min Seok Oh, Ki Hyoung Cho, Seung Hyun Kang, Ji Ae Seok, Ji Wook Chung, Young Seob Lee
  • Patent number: 8929302
    Abstract: A method of receiving control information in a wireless communication system includes receiving position information for searching at least one downlink control channel, a downlink control channel carrying control information of at least one user equipment, receiving multiplexed downlink control channel in which a plurality of downlink control channels are sequentially multiplexed and sequentially searching the downlink control channel on the multiplexed downlink control channel according to the position information. The number of detection attempts to detect its own control information can be reduced.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: January 6, 2015
    Assignee: LG Electronics Inc.
    Inventors: So Yeon Kim, Min Seok Oh, Ki Hyoung Cho, Seung Hyun Kang, Ji Ae Seok, Ji Wook Chung, Young Seob Lee
  • Patent number: 8781465
    Abstract: A method of scanning neighboring base stations for measuring channel quality in a wireless communication system includes receiving, by a mobile station from a serving base station, information associated with at least one neighboring base station; transmitting, by the mobile station to the serving base station, a scanning request message to request an allocation of a scanning interval for scanning, the scanning request message including parameters associated with a requested scan duration, a requested interleaving interval, and a requested scan iteration, wherein the requested interleaving interval is interleaved between each scan; and receiving, by the mobile station from the serving base station, a scanning response message including an allowed scan duration parameter in response to the scanning request message, wherein the allowed scan duration parameter is set to zero to indicate that the request for the allocation of the scanning interval is denied.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: July 15, 2014
    Assignee: LG Electronics Inc.
    Inventors: Yong Ho Kim, Ki Hyoung Cho
  • Patent number: 8774799
    Abstract: A method of scanning neighboring base stations for measuring channel quality in a wireless communication system includes receiving information associated with at least one neighboring base station; transmitting a scanning request message including parameters related to a requested scan duration, a requested interleaving interval and a requested scan iteration; and receiving a scanning response message in response to the scanning request message, the scanning response message including parameters related to an allowed scan duration, an allowed interleaving interval, a scan report mode, and an allowed scan iteration, wherein the scan report mode, which indicates a channel quality measurement reporting method, is set to ‘00’ when the scan report mode indicates no report, set to ‘01’ when the scan report mode indicates a periodic report, and set to ‘10’ when the scan report mode indicates a event-triggered report.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: July 8, 2014
    Assignee: LG Electronics Inc.
    Inventors: Yong Ho Kim, Ki Hyoung Cho
  • Patent number: 8689088
    Abstract: A method for encoding data using a parity check matrix is disclosed. The method for encoding data using a parity check matrix comprises generating a fourth base matrix by applying a row permutation pattern and a column permutation pattern to rows and columns of a third base matrix, respectively, the third base matrix including a plurality of indexes, each of the plurality of indexes indicating a sub-matrix; generating the parity check matrix by replacing each index of the fourth base matrix with a corresponding sub-matrix; outputting an encoded bit stream by encoding an input bit stream using the generated parity check matrix; and permuting an order of sequences of the encoded bit stream according to an inverse of the column permutation pattern.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: April 1, 2014
    Assignee: LG Electronics Inc.
    Inventors: Young Seob Lee, Min Seok Oh, Ji Wook Chung, Sang Gook Kim, Ki Hyoung Cho
  • Patent number: 8533542
    Abstract: An interleaver provision method for providing a continuous length, an interleaving method, and a turbo-encoder thereof are disclosed. The interleaving method selects a basic interleaver having a proper length from among the basic interleaver set, which is predetermined to have the length represented by a multiple of the ARP fluctuation vector period. The interleaving method performs the dummy insertion and the pruning process to have the length acting as the basic-interleaver length, so that it can provide the ARP interleaver having a continuous length.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: September 10, 2013
    Assignee: LG Electronics Inc.
    Inventors: Seung Hyun Kang, Min Seok Oh, Ki Hyoung Cho, Young Seob Lee, Ji Wook Chung
  • Patent number: 8478268
    Abstract: A method of communicating data in a wireless communication system is disclosed. More specifically, a method discloses transmitting a request by a mobile subscriber station (MSS) to a network entity via a de-registration request message requesting the network entity to retain a preferred session information, and receiving a selected session information via a de-registration command response from the network entity.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: July 2, 2013
    Assignee: LG Electronics Inc.
    Inventors: Ki Hyoung Cho, Yong Ho Kim, Gi Seon Ryu
  • Patent number: 8443254
    Abstract: A method of encoding input data using a low density parity check (LDPC) code or decoding the encoded data is disclosed. Each index of a model matrix is expanded to an index matrix which includes two or more indexes. Each index included in the index matrix indicates a specific sub-matrix, and can be replaced with a corresponding sub-matrix to generate a parity check matrix.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: May 14, 2013
    Assignee: LG Electronics Inc.
    Inventors: Ji Wook Chung, Min Seok Oh, Ki Hyoung Cho, Seung Hyun Kang, Ji Ae Seok, Young Seob Lee, So Yeon Kim
  • Patent number: 8438459
    Abstract: An encoding and decoding method and apparatus. is disclosed. The method and apparatus improves encoding and decoding performance without using a large memory capacity and also reduces the complexity of hardware for implementation. According to the method, an encoded signal is received from a transmitting side, and the received signal is decoded using the parity check matrix. The parity check matrix includes layers where nonzero elements of a specific number or layers do not overlap in column direction.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: May 7, 2013
    Assignee: LG Electronics Inc.
    Inventors: Ki Hyoung Cho, Min Seok Oh, Kyu Hyuk Chung, Young Seob Lee
  • Patent number: 8359506
    Abstract: Methods of transmitting data using a plurality of hybrid automatic repeat request (HARQ) process channels sequentially is disclosed. One of the methods of transmitting data through a plurality of HARQ process channels including a first channel and a second channel includes adding offset to a retransmission data block if the first channel which will transmit the retransmission data block is prescheduled (S702) by another data block, the offset representing the difference in a transmission timing point between the second channel in which positive acknowledgement (ACK) signal has been received (S701) and the first channel; transmitting the retransmission data block through the second channel; and transmitting a data block corresponding to the second channel through the first channel.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: January 22, 2013
    Assignee: LG Electronics Inc.
    Inventors: Ji Ae Seok, Min Seok Oh, Ki Hyoung Cho, Young Seob Lee, So Yeon Kim, Ji Wook Chung, Seung Hyun Kang
  • Patent number: 8356227
    Abstract: A method of encoding data using a parity check matrix, a method of decoding encoded data, and a data retransmission method using the same are disclosed. A data retransmission method in a communication system includes transmitting a codeword encoded by a first parity check matrix corresponding to a first coding rate, among at least two parity check matrixes corresponding to different coding rates, receiving NACK from the receiver in response to the codeword, and transmitting parity bits encoded by some of the second parity check matrix corresponding to a second coding rate, among the at least two parity check matrixes, to the receiver.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: January 15, 2013
    Assignee: LG Electronics Inc.
    Inventors: Ji Wook Chung, Min Seok Oh, Ki Hyoung Cho, Ji Ae Seok, Young Seob Lee, So Yeon Kim
  • Patent number: 8320908
    Abstract: Scanning neighboring base stations in a wireless access system is provided. In one embodiment, a method of scanning neighboring base stations for assessing channel quality includes receiving from a serving base station information associated with at least one neighboring base station, and transmitting a scanning request message from a mobile subscriber station to the serving base station, wherein the scanning request message comprises a requested scan duration and a requested scan iteration, the requested scan iteration being associated with a requested number of iterations of the scanning of the at least one neighboring base station. The method also includes receiving a scanning response message from the serving base station, wherein the scanning response message comprises an allowed scan duration and an allowed scan iteration, the allowed scan iteration being associated with an allowed number of iterations of the scanning of the at least one neighboring base station.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: November 27, 2012
    Assignee: LG Electronics Inc.
    Inventors: Yong Ho Kim, Ki Hyoung Cho
  • Patent number: 8312338
    Abstract: A data transmitting and receiving method is disclosed. In transmitting a response signal for a transmission signal from at least one transmitter, the present invention includes receiving at least one data block from the at least one transmitter, the at least one data block grouped into at least one group and then transmitted by the at least one transmitter, checking whether each data block is successfully received for the at least one data block belonging to the corresponding group per the group, selecting a transmission scheme of transmitting a response signal instructing a presence or non-presence of successful reception of the each data block to the at least one transmitter, and transmitting a response signal for the each data block to the at least one transmitter by the selected response signal transmission scheme. Hence, the present invention reduces overhead of control information necessary for data transmission.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: November 13, 2012
    Assignee: LG Electronics Inc.
    Inventors: Ji Ae Seok, Min Seok Oh, Ki Hyoung Cho, Young Seob Lee, So Yeon Kim, Ji Wook Chung, Seung Hyun Kang, Wook Bong Lee
  • Publication number: 20120269079
    Abstract: A method of scanning neighboring base stations for measuring channel quality in a wireless communication system includes receiving, by a mobile station from a serving base station, information associated with at least one neighboring base station; transmitting, by the mobile station to the serving base station, a scanning request message to request an allocation of a scanning interval for scanning, the scanning request message including parameters associated with a requested scan duration, a requested interleaving interval, and a requested scan iteration, wherein the requested interleaving interval is interleaved between each scan; and receiving, by the mobile station from the serving base station, a scanning response message including an allowed scan duration parameter in response to the scanning request message, wherein the allowed scan duration parameter is set to zero to indicate that the request for the allocation of the scanning interval is denied.
    Type: Application
    Filed: March 20, 2012
    Publication date: October 25, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Yong Ho KIM, Ki Hyoung CHO
  • Patent number: 8286062
    Abstract: A method of encoding data using low density parity check (LDPC) code defined by a m×n parity check matrix is disclosed. More specifically, the method includes encoding input source data using the parity check matrix, wherein the parity check matrix comprises a plurality of z×z sub-matrices of which row weights and column weights are ‘0’ or ‘1’.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: October 9, 2012
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Oh, Ki Hyoung Cho, Kyu-Hyuk Chung
  • Patent number: 8276050
    Abstract: A method of encoding data using low density parity check (LDPC) code defined by a m×n parity check matrix is disclosed. More specifically, the method includes encoding input source data using the parity check matrix, wherein the parity check matrix comprises a plurality of z×z sub-matrices of which row weights and column weights are ‘0’ or ‘1’.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: September 25, 2012
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Oh, Ki Hyoung Cho, Kyu Hyuk Chung
  • Publication number: 20120185746
    Abstract: A method of encoding data using low density parity check (LDPC) code defined by a m×n parity check matrix is disclosed. More specifically, the method includes encoding input source data using the parity check matrix, wherein the parity check matrix comprises a plurality of z×z sub-matrices of which row weights and column weights are ‘0’ or ‘1’.
    Type: Application
    Filed: March 28, 2012
    Publication date: July 19, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Min Seok Oh, Ki Hyoung Cho, Kyu-Hyuk Chung
  • Publication number: 20120178446
    Abstract: A method of scanning neighboring base stations for measuring channel quality in a wireless communication system includes receiving information associated with at least one neighboring base station; transmitting a scanning request message including parameters related to a requested scan duration, a requested interleaving interval and a requested scan iteration; and receiving a scanning response message in response to the scanning request message, the scanning response message including parameters related to an allowed scan duration, an allowed interleaving interval, a scan report mode, and an allowed scan iteration, wherein the scan report mode, which indicates a channel quality measurement reporting method, is set to ‘00’ when the scan report mode indicates no report, set to ‘01’ when the scan report mode indicates a periodic report, and set to ‘10’ when the scan report mode indicates a event-triggered report.
    Type: Application
    Filed: March 20, 2012
    Publication date: July 12, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Yong Ho KIM, Ki Hyoung CHO