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: 10791530
    Abstract: Provided is a flexible numerology configuration method for an NR. In particular, a method may be provided for transmitting a synchronization signal and system information for a user equipment in a new radio access network. The method may include defining one or more subcarrier spacings to transmit at least one synchronization signal and at least one system information transmission channel in a frequency band of the new radio access network, determining one of the one or more subcarrier spacings to transmit the at least one synchronization signal and the at least one system information transmission channel, and transmitting at least one of the at least one synchronization signal and the at least one system information transmission channel based on the determined subcarrier spacing.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: September 29, 2020
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Patent number: 10764099
    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: September 22, 2017
    Date of Patent: September 1, 2020
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Publication number: 20200267807
    Abstract: A wireless induction heating cooker includes a main body configured to receive and heat food objects therein, a lid configured to couple to an upper surface of the main body, and an inner pot configured to be accommodated in the main body and to be heated based on a magnetic field being generated by a heating coil of an induction heating device. The inner pot defines a heat conduction space that is surrounded by a bottom surface, an outer surface, and an inner surface of the inner pot.
    Type: Application
    Filed: February 7, 2020
    Publication date: August 20, 2020
    Inventors: Hyeunsik Nam, Wan Soo Kim, Woo Jin CHOI, Byungkyu Park
  • Patent number: 10742364
    Abstract: Provided area a method for establishing downlink (DL) HARQ-ACK timing, and an apparatus therefor. The method establishes downlink HARQ-ACK timing when a primary cell and a secondary cell having different duplex modes are established for a user equipment. The user equipment receives a DL signal on the secondary cell. The user equipment applies HARQ-ACK timing established to be used in the duplex mode of the primary cell as HARQ-ACK timing regarding the received downlink signal.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: August 11, 2020
    Assignee: KT CORPORATION
    Inventors: Minseok Noh, Woo-jin Choi
  • Patent number: 10736175
    Abstract: Provided are a method and apparatus for processing data by a terminal. The method ma include: receiving higher layer signaling including indication information requesting for configuring a terminal tunnel protocol entity for processing data transmitted/received through a WLAN carrier, configuring the terminal tunnel protocol entity on the basis of the indication information; and receiving bearer-specific user data and transmitting the bear-specific user data to a terminal user plane entity corresponding thereto.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: August 4, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10735967
    Abstract: Provided are a method and an apparatus for aggregating the WLAN with an E-UTRAN carrier at a radio access network (RAN) level and using the same to transmit and receive LTE-WLAN aggregation data. A method of a terminal for receiving data by aggregating a WLAN carrier may include transmitting WLAN MAC address information or IP address information which are configured in the terminal, receiving configuration information to configure a specific bearer through the WLAN carrier, receiving the data through the base station and the WLAN carrier, respectively, and transferring the specific bearer data received through the WLAN carrier to a PDCP entity of the specific bearer within the terminal.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: August 4, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10728693
    Abstract: Disclosed are a method and an apparatus for configuring a system information transmission resource for an MTC terminal. The method may include configuring a system bandwidth including two or more physical resource blocks with one or more subbands defined by two or more physical resource blocks to enable at least one remaining physical resource block to be located in a center of the system bandwidth and transmitting the system information to a predetermined user equipment (UE) using the subband.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: July 28, 2020
    Assignee: KT CORPORATION
    Inventors: Seunghyun Kang, Woo-jin Choi
  • Patent number: 10721118
    Abstract: Provided are a method and apparatus for configuring dual-connectivity by a terminal, The method may include: performing configuration by adding a secondary base station signaling radio bearer (SRB); receiving a radio resource control (RRC) message including radio resource configuration information associated with a secondary base station or a secondary cell group through the secondary base station SRB; and transmitting a failure information message to a master base station when it is not possible to comply with the radio resource configuration information included in the RRC message.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: July 21, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10721031
    Abstract: Disclosed is a method of transmitting and receiving a transmission block based on a code block group (CBG) in a 3GPP NR system. A method of a terminal may be provided for receiving a transmission block from a base station. The method may include receiving a transmission block composed of one or more code block groups (CBGs) from the base station, transmitting a HARQ ACK/NACK message for the transmission block to the base station, receiving a retransmission block configured based on the HARQ ACK/NACK message for the transmission block, and transmitting a HARQ ACK/NACK message for the retransmission block to the base station.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: July 21, 2020
    Assignee: KT CORPORATION
    Inventors: Ki-Hyeon Park, Woo-jin Choi
  • Publication number: 20200228223
    Abstract: Provided are a method and a device for selecting a channel of an unlicensed band in configuring carrier aggregation for a terminal using an unlicensed band cell which uses an unlicensed frequency band. The method may include: receiving, from a base station, channel candidate information of a secondary cell using an unlicensed frequency band; transmitting channel state information with respect to one or more channels generated using the channel candidate information; and adding, as the secondary cell, a channel selected on the basis of the channel state information by the base station; and a device.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Applicant: KT CORPORATION
    Inventors: Seunghyun KANG, Minseok NOH, Woo-jin CHOI, Kyujin PARK, KyungJun LEE
  • Patent number: 10715290
    Abstract: Provided is an apparatus and method for beam management based on a channel state indicator (CSI)-reference signal (RS). A method for a user equipment (UE) to receive a CSI-RS from a base station (BS) includes receiving configuration information of a CSI-RS resource set including one or more CSI-RS resources, and receiving a CSI-RS from a BS through CSI-RS resources included in the CSI-RS resource set. The configuration information of the CSI-RS resource set includes indication information indicating beam configurations for the respective CSI-RS resources included in the CSI-RS resource set.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: July 14, 2020
    Assignee: KT CORPORATION
    Inventors: Ki-tae Kim, Woo-jin Choi
  • Patent number: 10712910
    Abstract: A portable electronic device is provided. The portable electronic device includes a display, a memory to store a first set of applications and a second set of applications, the first set of applications and the second set of applications to be executed in a first operation mode and a second operation mode of a same operating system, respectively, and a processor.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: July 14, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyeon-mi Lee, Min Jang, Woo-jin Choi
  • Patent number: 10708893
    Abstract: Provided are a method and a device for transmitting channel state information by using a PUCCH of an SCell when providing carrier aggregation (CA) or dual connectivity (DC) in a E-UTRAN. The method may include: configuring a carrier aggregation by using one primary cell (PCell) and a plurality of secondary cells (SCells) controlled by a base station; receiving an upper layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function in at least one cell among the plurality of secondary cells; receiving, by using the configuration information, a MAC control element in which activation state indication information for a PUCCH SCell having an uplink control channel transmission function is included; and transmitting channel state information on the PUCCH SCell after the PUCCH SCell is activated according to the activation state indication information.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: July 7, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Kyujin Park, KyungJun Lee, Woo-jin Choi
  • Publication number: 20200204972
    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 3 GPP 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 to 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: Application
    Filed: March 5, 2020
    Publication date: June 25, 2020
    Applicant: KT CORPORATION
    Inventors: Kyujin PARK, Woo-jin CHOI
  • Publication number: 20200187069
    Abstract: Provided are a method and a device for performing a UE-based handover in a next generation wireless access network. The method of a UE may include receiving, from a source base station, an upper layer signaling including information on UE-based handover command and information on conditions for handover execution; storing a target cell configuration by using the information on conditions for handover execution; and determining whether to perform a handover procedure to a target cell, by determining whether predetermined conditions for handover are satisfied.
    Type: Application
    Filed: April 16, 2018
    Publication date: June 11, 2020
    Applicant: KT CORPORATION
    Inventors: Sung-pyo HONG, Woo-jin CHOI
  • Publication number: 20200187179
    Abstract: Provided are 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.
    Type: Application
    Filed: February 17, 2020
    Publication date: June 11, 2020
    Applicant: KT CORPORATION
    Inventors: Kyujin PARK, Woo-jin CHOI
  • Patent number: 10674530
    Abstract: Provided is a method for transmitting, by a terminal, a Buffer Status Report (BSR). The method includes: monitoring whether a regular BSR or a periodic BSR is triggered; determining that a BSR format is a long BSR when there is data available for uplink transmission in one or more Logical Channel Groups (LCGs); and transmitting, to a base station, a BSR for all LCGs having the data available for uplink transmission, which is configured in the long BSR format, when the regular BSR or the periodic BSR is triggered, and an apparatus thereof.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: June 2, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10667322
    Abstract: Provided are a method and apparatus for changing a connection state by user equipment in a light connection state using a paging message. The method of changing a connection state by user equipment may include receiving, from a base station, an radio resource control (RRC) message including instruction information for instructing state transition into a light connection state, configuring the connection state of the user equipment in the light connection state based on the instruction information, receiving a paging message for the user equipment, and determining to change the connection state of the user equipment based on a user equipment identifier included in the paging message.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: May 26, 2020
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 10644819
    Abstract: Provided are a method and a device for selecting a channel of an unlicensed band in configuring carrier aggregation for a terminal using an unlicensed band cell which uses an unlicensed frequency band. The method may include: receiving, from a base station, channel candidate information of a secondary cell using an unlicensed frequency band; transmitting channel state information with respect to one or more channels generated using the channel candidate information; and adding, as the secondary cell, a channel selected on the basis of the channel state information by the base station; and a device.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: May 5, 2020
    Assignee: KT CORPORATION
    Inventors: Seunghyun Kang, Minseok Noh, Woo-jin Choi, Kyujin Park, KyungJun Lee
  • Publication number: 20200128578
    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: Application
    Filed: October 27, 2017
    Publication date: April 23, 2020
    Applicant: KT CORPORATION
    Inventors: Kyujin PARK, Woo-jin CHOI