Patents by Inventor Woo-Jin Choi

Woo-Jin Choi 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: 10925079
    Abstract: The present embodiments provide a method for scheduling an uplink signal and a downlink data channel in an NR, wherein one embodiment is a method by which a terminal schedules an uplink signal and a downlink data channel, the method comprising the steps of: receiving, from a base station, an uplink signal and downlink data channel scheduling information; and scheduling the uplink signal and the downlink data channel on the basis of the scheduling information.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: February 16, 2021
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Patent number: 10911942
    Abstract: The provided is a method and apparatus for adding a WLAN carrier to an E-UTRAN carrier at a radio access network (RAN) level to transmit and receive data. The method may include: receiving, from a base station, additional configuration indication information for additionally configuring a WLAN carrier; additionally configuring the WLAN carrier on the basis of the additional configuration indicating information; and attempting WLAN associating through the WLAN carrier using UE identification information, wherein a WLAN end transmits confirmation information for the WLAN association of the UE to the base station.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: February 2, 2021
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10897720
    Abstract: Provided is a method for transmitting and receiving downlink pre-emption indication data in a next generation/5G wireless access network. The method for a terminal for receiving downlink pre-emption indication data may include: receiving monitoring configuration data for downlink pre-emption indication data from a base station; and, on the basis of the monitoring configuration data, monitoring the downlink pre-emption indication data, wherein the monitoring configuration data comprises data for whether to monitor the downlink pre-emption indication data.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: January 19, 2021
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-Jin Choi
  • Publication number: 20210007531
    Abstract: A steam exhausting device coupled to a cover of an electric pressure cooker includes: a housing that has an upper surface defining a first opening and a lower surface defining a second opening; a steam pipe that is spaced apart from the second opening and that extends along a vertical line passing the second opening; a pressure member arranged in the housing along the vertical line and configured to move down to a discharge end of the steam pipe; a lever disposed in the housing and having a first end connected to the pressure member; a button connected to a second end of the lever and configured to move vertically along a vertical axis passing the first opening, where the button includes a magnetic body; and an electromagnet disposed at a bottom surface of the housing. The vertical axis passes the electromagnet.
    Type: Application
    Filed: February 19, 2020
    Publication date: January 14, 2021
    Inventors: Byungkyu PARK, Hyeunsik NAM, Wan Soo KIM, Woo Jin CHOI
  • Patent number: 10892867
    Abstract: Provided are an sTTI setting method for an sPUSCH in a short ITT frame structure and a specific operating method for an sPUSCH based on a shared DM-RS. In the method, a shared DM-RS within an SPUSCH is allocated only to a specific symbol included in a partial sTTI and is used in all sPUSCHs within a legacy TTI (=1 ms).
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: January 12, 2021
    Assignee: KT CORPORATION
    Inventors: Ki-tae Kim, Woo-jin Choi
  • Patent number: 10880222
    Abstract: A method of a terminal may be provided for transmitting an RLC status protocol data unit (PDU). The method may include receiving an RLC data unit from a base station, configuring the RLC status PDU indicating whether the RLC data unit is received, where the RLC status PDU includes at least one of a negative acknowledgement (NACK) sequence number field and a NACK range field; and transmitting the RLC status PDU to the base station.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: December 29, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10869174
    Abstract: Provided are a method of supporting Single Cell Point-to-Multi-point (SC-PTM) for a Bandwidth reduced Low complexity/Coverage Enhancement (BL/CE) terminal or an NB-IoT terminal, which are for a Machine Type Communication (MTC) application defined in a 3GPP LTE/LTE-A system. The method may include receiving configuration information relating to an NPDCCH search space from a base station wherein the NPDCCH search space is separately configured to receive scheduling control information for the multicasting control channel; receiving the scheduling control information for the multicasting control channel through the NPDCCH search space configured based on the configuration information; and receiving the multicasting control channel based on the scheduling control information, wherein the configuration information is received through higher layer signaling.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: December 15, 2020
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Patent number: 10869303
    Abstract: Provided is a method for monitoring, transmitting, and receiving downlink pre-emption indication information in a next-generation/5G radio access network. The method may include receiving monitoring configuration information for downlink pre-emption indication information from a base station; receiving configuration information on a control resource set (CORESET) for receiving the downlink pre-emption indication information from the base station; configuring reference downlink resources based on the configuration information on a control resource set; and monitoring the downlink pre-emption indication information for the reference downlink resources, wherein the downlink pre-emption indication information includes a bitmap indicating information on at least one of time-section resources and frequency-section resources in which pre-emption has occurred, among reference downlink resources.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: December 15, 2020
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Patent number: 10868702
    Abstract: The present embodiments relate to a method for configuring a cyclic prefix for a next generation/5G radio access network (referred to as new radio (NR)) about which 3GPP has begun discussions. According to the present embodiments, a base station configures cyclic prefix (CP) lengths for secondary numerology except for reference numerology and sets, through RRC signaling, the values of the CP lengths configured for the secondary numerology, thereby enabling a terminal to detect the CP lengths for the secondary numerology in a cell supporting mixed numerology.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: December 15, 2020
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Patent number: 10861685
    Abstract: The fluoro-based polymer composite target for sputtering according to the present invention is excellent in adhesion with a metal electrode to which a voltage is applied, can prevent bending, and is capable of stably forming plasma by imparting conductivity even with industrially widely used DC and MF power supply systems, thereby allowing a fluorinated polymer to be effectively deposited on an adherend by sputtering.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: December 8, 2020
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Sang Jin Lee, Jae Heung Lee, Woo Jin Choi, Cheol Hwan Kim, Sung Hyun Kim, Seong Geun Cho, Dong Seok Ham, Kwang Je Kim, Dong Soon Park, Jae Seong Park
  • Patent number: 10856201
    Abstract: Provided are a control method for decreasing a service interruption delay in a handover procedure of a mobile communication terminal, and a device therefor. The method of a source base station may include: transmitting, to a target base station, a handover request message including information indicating an improved handover mode for decreasing service interruption when handover of a terminal is determined; receiving a handover request confirmation message including the information indicating the improved handover mode from the target base station; transmitting a radio resource control (RRC) connection reestablishment message including mobility control information to the terminal; and maintaining connection to the UE and continually transmitting data to or receiving data from the terminal through the connection until the terminal transmits a first signal to a target cell of the target base station according to the improved handover mode.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: December 1, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10856307
    Abstract: Provided is a method for transmitting and receiving downlink pre-emption indication information using a bitmap in a next-generation/5G radio access network. The method may include: receiving monitoring configuration information for downlink pre-emption indication information from a base station; monitoring downlink pre-emption indication information based on the monitoring configuration information; and receiving the downlink pre-emption indication information from the base station, wherein the downlink pre-emption indication information includes a bitmap indicating information on at least one of time-section resources and frequency-section resources in which pre-emption has occurred, among reference downlink resources.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: December 1, 2020
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-Jin Choi
  • Patent number: 10855658
    Abstract: The present embodiment relates to a method and an apparatus for controlling a base station and a terminal to transmit ad/or receive specific user plane data through a WLAN carrier while transmitting the user plane data by adding the WLAN carrier to the E-UTRAN carrier in the RAN (Wireless Access Network) level. In particular, a method may be provided for transmitting and receiving data by a terminal. The method may include: receiving configuration information for transmitting and receiving data to and from a base station by using an IPsec (Internet Protocol Security) tunnel through a WLAN (wireless local area network) carrier, configuring the IPsec tunnel based on the configuration information and setting a data bearer by using the IPsec tunnel; and transmitting, to the base station, data that is received by using the IPsec tunnel from the upper layer in a tunnel entity of the terminal.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: December 1, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10849111
    Abstract: Provided are a method and an apparatus for transmitting, by a terminal, channel state information (CSI) in a frame structure of a short transmission time interval (sTTI).
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: November 24, 2020
    Assignee: KT CORPORATION
    Inventors: Ki-tae Kim, Woo-jin Choi
  • Publication number: 20200351134
    Abstract: The present embodiments relate to a method for configuring a cyclic prefix for a next generation/5G radio access network (referred to as new radio (NR)) about which 3GPP has begun discussions. According to the present embodiments, a base station configures cyclic prefix (CP) lengths for secondary numerology except for reference numerology and sets, through RRC signaling, the values of the CP lengths configured for the secondary numerology, thereby enabling a terminal to detect the CP lengths for the secondary numerology in a cell supporting mixed numerology.
    Type: Application
    Filed: July 15, 2020
    Publication date: November 5, 2020
    Applicant: KT CORPORATION
    Inventors: Kyujin PARK, Woo-jin CHOI
  • Publication number: 20200330532
    Abstract: Provided are a microorganism having an ability to degrade ethanol and acetaldehyde, and a composition and a kit each including the microorganism.
    Type: Application
    Filed: November 8, 2018
    Publication date: October 22, 2020
    Inventors: Young In KIM, Tai Hoon KIM, Hyei Jin DONG, Woo Jin CHOI, Hyun Uk JEONG, Seong Gon HONG, Dong Wook RYU
  • Patent number: 10813028
    Abstract: Provided are a method and an apparatus for a NarrowBand-Internet of Things (NB-IoT) terminal to perform a mobility process. The method may include: transmitting an RRC connection re-establishment request message to a base station when a pre-set event occurs; receiving an RRC connection re-establishment message from the base station; and resuming a signaling radio bearer on the basis of the RRC connection re-establishment message.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: October 20, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10805050
    Abstract: Provided is a method of requesting, by a terminal, retransmission of a TB. The method may include: receiving a TB configured with K code blocks (CBs) and M code block groups (CBGs) from a base station (BS); determining whether reception of the TB is successful; and transmitting retransmission information about the TB to the BS when it is determined that the reception of the TB fails.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: October 13, 2020
    Assignee: KT CORPORATION
    Inventors: Ki-Hyeon Park, Ki-Tae Kim, Kyujin Park, Woo-jin Choi
  • Patent number: 10805918
    Abstract: Provided are a method and apparatus for performing multicast communication in a communication system based on LTE or LTE-Advanced. The method of a UE includes receiving a Single Cell-Multicast Control CHannel (SC-MCCH) by monitoring a downlink channel based on a preset Downlink Control Information (DCI) format, determining a DCI format for receiving a Single Cell-Multicast Traffic CHannel (SC-MTCH) based on Coverage Enhanced Mode (CEMode) information included in the SC-MCCH, and receiving the SC-MTCH by monitoring the downlink channel based on the determined DCI format for receiving the SC-MTCH.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: October 13, 2020
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Patent number: 10798723
    Abstract: Provided are a method and apparatus for supporting mobile communication network-based vehicle to everything (V2X) communication. The method may include: transmitting, to a base station, terminal assistance information for semi-persistent scheduling (SPS) of radio resources for V2X communication; receiving, from the base station, SPS configuration information generated using the terminal assistance information; and performing V2X communication by using the SPS configuration information.
    Type: Grant
    Filed: January 2, 2017
    Date of Patent: October 6, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi