Patents by Inventor Chi-Woo AN

Chi-Woo AN 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: 10341056
    Abstract: A decoding method in a mobile communication system using a non-binary LDPC code according to various embodiments of the present disclosure includes: selecting a message value having the highest reliability from each column and each row of an input vector message; generating a configuration set using the message value selected for each column and a GF element corresponding to the message value; and generating a check node output message using the generated configuration set and an extra output message value. According to various embodiments of the present disclosure, a decoding time period is reduced.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: July 2, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Min Kim, Woo-Myoung Park, Seok-Ki Ahn, Chi-Woo Lim
  • Patent number: 10327245
    Abstract: An apparatus and a method for operating a mobile station in a wireless communication system are provided. The method includes receiving first information transmitted on a secondary carrier from a base station, and transmitting second information for feedback related to the secondary carrier at a feedback region in a primary carrier based on the first information to the base station.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: June 18, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Jeong Kang, Chi-Woo Lim, Jae-Weon Cho, Tae-Young Kim
  • Publication number: 20190182906
    Abstract: The present invention relates to a wet planar heating element and a method manufacturing the same. The element including: a planar heating unit including an upper waterproof film layer, a lower waterproof film layer, a planar heating layer, and an electrode layer; an external waterproof film layer; and a non-woven fabric layer. According to the present invention, it is possible to minimize leakage current due to pores of a non-woven fabric substrate and a low dielectric constant of air in air pockets, thereby solving problems that an earth leakage circuit breaker operates. Accordingly, wet construction can be performed, power consumption can be reduced, and an electrical fire risk can be remarkably lowered. In addition, it is possible to improve flexibility of the planar heating element, whereby the use of the planar heating element can be expanded and the efficiency of the construction work can be increased.
    Type: Application
    Filed: May 19, 2017
    Publication date: June 13, 2019
    Applicant: NDT ENGINEERING & AEROSPACE CO., LTD.
    Inventors: Ki-Hyun Lim, Chi-Woo Noh
  • Patent number: 10305710
    Abstract: The present invention relates to a method for operating, by a base station, multiple modulation schemes in a wireless communication system, the method comprising the steps of: calculating the number of terminals, among the terminals in a cell managed by the base station, of which a channel state is included in a state that is lower than a preset state; reporting information related to the calculated number of terminals to an upstream entity of the base station; receiving information about a band, assigned by the upstream entity, for a hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) scheme on the basis of a QAM scheme and a FSK scheme; and transmitting downwardly the information about the band for the FQAM scheme to the terminals of which a channel state is included in a state that is lower than the preset state. Other modified embodiments on the basis of the technical concept of the present invention are also possible.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: May 28, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Sagong, Jeong-Ho Park, Jae-Won Kim, Hyun-Kyu Yu, Chi-Woo Lim, Su-Ryong Jeong, Sung-Nam Hong
  • Patent number: 10292172
    Abstract: A method and an apparatus for transmitting a packet in a system performing a Device to Device (D2D) direct communication are provided. In the method, whether to transmit a small packet is determined. When small packet transmission is determined, at least one peripheral reception device is informed of whether the small packet is transmitted at a scheduling point.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: May 14, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chi-Woo Lim, Kyung-Kyu Kim, Dae-Gyun Kim, Seung-Hoon Park
  • Patent number: 10277449
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Provided is an operation method of a base station in a wireless communication system. The method comprises: receiving, from a terminal, at least one piece of information among channel quality information on a resource region allocated to the terminal and non-Gaussian information on a nulling region corresponding to the resource region; and determining a modulation order for the terminal, a code rate, a ratio of the resource region to the nulling region based on the channel quality information and the non-Gaussian information.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 30, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Nam Hong, Min Sagong, Chi-Woo Lim
  • Patent number: 10271337
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to method and apparatus for performing a decoding with low complexity in a wireless communication system. A decoding method of a terminal in a wireless communication system comprises determining a first characteristic value indicating a statistical characteristic of an interference signal based on a received signal of a base station, determining a second characteristic value indicating a statistical characteristic of an interference signal based on data received from the base station, and decoding the data according to a decoding scheme corresponding to a difference of the first characteristic value and the second characteristic value.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: April 23, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Sagong, Woo-Myoung Park, Seok-Ki Ahn, Chi-Woo Lim, Sung-Nam Hong
  • Patent number: 10243695
    Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). A method includes decoding a codeword corresponding to a preset decoding scheme to detect reliability information of each of codeword bits included in the codeword, wherein at least one of a number of quantization bits and a range of a quantization level used for detecting reliability information in the decoding scheme is determined based on a degree of a node on a bipartite graph of a low density parity check (LDPC) code.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: March 26, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Jang, Kyung-Joong Kim, Jae-Yoel Kim, Seho Myung, Seok-Ki Ahn, Chi-Woo Lim, Hong-Sil Jeong
  • Patent number: 10237112
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Provided is an operation method of a base station in a wireless communication system. The method comprises: receiving, from a terminal, at least one piece of information among channel quality information on a resource region allocated to the terminal and non-Gaussian information on a nulling region corresponding to the resource region; and determining a modulation order for the terminal, a code rate, a ratio of the resource region to the nulling region based on the channel quality information and the non-Gaussian information.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: March 19, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Nam Hong, Min Sagong, Chi-Woo Lim
  • Patent number: 10221991
    Abstract: Disclosed is a display apparatus including: a display configured to be swiveled; a stand configured to support the display; a driver configured to swivel the display with respect to the stand; a swiveling indicator provided within a predetermined swiveling range of the display and shaped to show a swiveling indication value corresponding to a swiveled angle of the display; a sensor configured to sense the swiveling indication value of the swiveling indicator corresponding to the swiveled angle of the display; and a controller configured to determine the swiveled angle of the display based on the swiveling indication value sensed by the sensor and to provide at least one function supported by the display apparatus in accordance with the determined swiveled angle.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chi-woo Lee, Sang-won Kim
  • Patent number: 10205468
    Abstract: Provided is a method for decoding a non-binary (NB) low density parity check (LDPC) code at a user equipment (UE) that implements at least one variable nodes that receive a received signal of a wireless channel and deliver an input message to a check node and the check node that checks the input message and outputs an output message. The method includes receiving at least one input messages, generating a temporary vector by using the at least one input messages, searching for an element having a dominant value by checking the temporary vector, generating a configuration set, which is a check target, by using the element having the dominant value, and generating the output message by performing comparison with respect to the generated configuration set.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: February 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok-Ki Ahn, Kyeong-Cheol Yang, Sang-Min Kim, Woo-Myoung Park, Min Sagong, Chi-Woo Lim, Sung-Nam Hong
  • Patent number: 10182429
    Abstract: Disclosed is a method and apparatus for transmitting information in a communication system. The present invention relates to a millimeter wave beamforming-based 5G or pre-5G wireless communication system for supporting a higher data rate beyond a 4G network or LTE system.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: January 15, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-Taik Kim, Seok-Ki Ahn, Jeong-Ho Park, Chi-Woo Lim, Jae-Weon Cho
  • Patent number: 10181927
    Abstract: A method of operating a base station in a wireless communication system supporting frequency and quadrature-amplitude modulation (FQAM) is provided. The method includes receiving channel quality information and non-Gaussian information for a data region from a mobile station, and determining a MCS level on the basis of the channel quality information and the non-Gaussian information.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: January 15, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chi-Woo Lim, Min Sagong, Sung-Nam Hong, Hyun-Kyu Yu, Kyung-Whoon Cheun
  • Publication number: 20180351693
    Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate beyond the 4G communication system such as LTE. A decoding method using a polar code according to an embodiment of the present disclosure comprises the steps of: determining a first function for decoding input bits and a second function, which is independent from a log likelihood ratio (LLR) value of a previous input bit by the first function; and decoding the input bits in parallel using the first function and the second function. Also, the method comprises the steps of: determining an internal frozen bit using at least one input frozen bit which has a predetermined value of a predetermined position from among the input bits; and determining LLR values for layer bits sequentially from the higher layers of N layers.
    Type: Application
    Filed: November 9, 2016
    Publication date: December 6, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Min JANG, Woo-Myoung PARK, Jae-Yoel KIM, Seok-Ki AHN, Chi-Woo LIM
  • Patent number: 10122385
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to a method and a device for efficiently shortening and puncturing a non-binary LDPC code, the method for a transmitter shortening and puncturing a non-binary code being capable of supporting various modulation methods by using a single non-binary code, and the method comprising the steps of: shortening, on the basis of a modulation method, at least one information bit in at least one information symbol constituting the non-binary code; encoding the at least one information symbol having a shortened information bit; and puncturing, on the basis of the modulation method, at least one parity code in at least one parity symbol obtained through the encoding step.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: November 6, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok-Ki Ahn, Woo-Myoung Park, Min Sagong, Chi-Woo Lim, Sung-Nam Hong
  • Patent number: 10098103
    Abstract: A method and an apparatus for supporting multiuser superposition transmission. The method includes transmitting a signaling message including an indication of multiuser superposition transmission to a first UE among UEs scheduled for multiuser superposition transmission, transmitting, to the first UE, first DCI containing transmission information for the first UE and second DCI containing transmission information for at least one second UE among the UEs for multiuser superposition transmission, and transmitting a first downlink signal containing data for the first UE and a second downlink signal containing data for the second UE in a superposed manner on same resources.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: October 9, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chi-Woo Lim, Hyun-Kyu Yu, Jae-Won Kim, Woo-Myoung Park
  • Publication number: 20180284549
    Abstract: A display substrate includes an insulating substrate, a first gate line, a first lower electrode, a second lower electrode, a first upper electrode, and a second upper electrode. The insulating substrate includes a first pixel region and a second pixel region located at a first direction from the first pixel region. The first gate line extends in a second direction crossing the first direction on the insulating substrate. The first and the second lower electrodes are in the first and the second pixel regions, respectively. The first upper electrode overlaps the first lower electrode in the first pixel region and includes a first slit pattern extending in a third direction different from the first and the second directions. The second upper electrode overlaps the second lower electrode in the second pixel region and includes a second slit pattern extending in a fourth direction different from the first to the third directions.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 4, 2018
    Inventors: Seong-Jun Lee, Jin-Oh Park, Mu-Kyung Jeon, Yong-Kyu Jang, Dong-Hoon Lee, Chi-Woo Kim
  • Patent number: 10069665
    Abstract: Disclosed is a method and device for transmitting and receiving a signal by using modulation techniques in a wireless communication system. The method according to the present invention includes: selecting one of QAM and improved QAM according to at least one predefined criterion; encoding information bits to be transmitted according to a first encoding scheme and mapping encoded information bits to QAM symbols when the QAM is selected; encoding information bits to be transmitted according to a second encoding scheme and mapping encoded information bits to improved QAM symbols when the improved QAM is selected; and transmitting the QAM symbols or the improved QAM symbols through a given resource region.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: September 4, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Kyu Yu, Won-Il Roh, Jeong-Ho Park, Min Sagong, Ji-Yun Seol, Chi-Woo Lim, Kyung-Whoon Cheun, Jae-Weon Cho, Sung-Nam Hong
  • Publication number: 20180242343
    Abstract: A method for performing scheduling by a first base station over a wireless communication network, and an apparatus therefor are provided. The method includes receiving first channel status information (CSI) measured by at least one user equipment (UE) positioned in coverage of the first base station and second CSI, determining a first transmission rate for any one of the at least one UE positioned in the coverage of the first base station and a second transmission rate for any one of the at least one UE positioned in the coverage of the second base station, determining a third transmission rate for a first UE among the at least one UE positioned in the coverage of the first base station and a fourth transmission rate for a second UE among the at least one UE positioned in the coverage of the second base station, and performing scheduling.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 23, 2018
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Seok-Ki AHN, Kwang-Taik KIM, Young-Han KIM, Yong-Seok KIM, Chi-Woo LIM
  • Patent number: 10050820
    Abstract: A method for modulation in a transmitter for transmitting a signal in a wireless communication system according to an embodiment of the present invention comprises: a step for determining a modulation scheme; a step for, if the determined modulation scheme corresponds to a specific modulation scheme, converting encoded information bits to quadrature amplitude modulation (QAM) symbols in accordance with a predetermined QAM modulation order, selecting a sequence corresponding to an element of an integer vector in a predetermined sequence set, repeating the converted QAM symbols for a predetermined sequence length, and outputting signals by multiplying the repeated QAM symbols and the selected sequence; and a step for transmitting the outputted signals to a receiver.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: August 14, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Nam Hong, Woo-Myoung Park, Min Sagong, Seok-Ki Ahn, Chi-Woo Lim