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).

  • Publication number: 20210282190
    Abstract: Provided is a method for a base station executing a multi-beam-based random access procedure in wireless communication, and a device therefor. The method may include: transmitting information associated with a RACH resource to a terminal; receiving a multi-RACH preamble from the terminal by a multi-beam; and transmitting a random access response to the terminal.
    Type: Application
    Filed: February 15, 2021
    Publication date: September 9, 2021
    Applicant: KT CORPORATION
    Inventors: Ki-tae KIM, Woo-jin CHOI
  • Patent number: 11115976
    Abstract: Provided is a method and a device for transmitting an Ack/Nack of sPUCCH in response to the reception of short TTI-based sPDSCH in a 3GPP LTE/LTE-Advanced system. A base station may set, for each terminal, an offset value for setting a link between sPDSCH and sPUCCH, and transmit the set offset value to the terminal through upper layer signaling (RRC signaling), thereby enabling a terminal to use the offset value to allocate sPUCCH resources for transmitting an Ack/Nack in response to the reception of sPDSCH.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: September 7, 2021
    Assignee: KT CORPORATION
    Inventors: Ki-tae Kim, Kyujin Park, Woo-jin Choi
  • Patent number: 11115157
    Abstract: The disclosure provides a method for scheduling an uplink control channel (PUCCH) in a next generation/5G wireless access network. The method of a terminal for scheduling a PUCCH may include: receiving, from a base station, timing relationship setting information between a downlink data channel (PDSCH) and a PUCCH; and scheduling the PUCCH on the basis of the timing relationship setting information.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: September 7, 2021
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Publication number: 20210266216
    Abstract: Provided are a configuration method and a transmission method of a new reference signal for frequency offset estimation in a novel wireless communication system. The method may include configuring a synchronization signal to be transmitted through a first bandwidth part of one or more bandwidth parts configured by dividing an entire bandwidth into one or more parts, allocating the one or more reference signals for estimating the frequency offset on one or more resources other than a resource for configuring the synchronization signal, and transmitting the one or more reference signals for estimating the frequency offset.
    Type: Application
    Filed: May 6, 2021
    Publication date: August 26, 2021
    Inventors: Ki-tae KIM, Woo-jin CHOI
  • Publication number: 20210267007
    Abstract: Provided are a method of a base station for controlling transmission and reception of data through a network slice. The method includes: receiving network slice request information from a terminal in which a network slice is configured; controlling so as to deliver the network slice request information to a core network entity; and receiving, from the core network entity, specific network slice information configured on the basis of the network slice request information.
    Type: Application
    Filed: May 7, 2021
    Publication date: August 26, 2021
    Inventors: Sung-pyo HONG, Woo-jin CHOI
  • Patent number: 11100206
    Abstract: The present invention provides an electronic device and method for controlling the activation of a camera module. An electronic device according to various examples comprises: a sensor module; a first camera module including a first camera and a light emitting part; a second camera module; and a processor electrically connected to the sensor module, the first camera module, and the second camera module, wherein the processor determines whether an object is positioned within a first distance through the sensor module, inactivates the light emitting part or the first camera and the light emitting part of the first camera module if the object is positioned within the first distance, determines the distance between the object and the electronic device by using the second camera module, activates the light emitting part or the first camera and the light emitting part if the determined distance is greater than or equal to a second distance, and can perform iris authentication by using the first camera module.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo-Yong Lee, Jun-Ho An, Hye-Jin Kang, Min-Sheok Choi, Jong-Hun Won, Ki-Huk Lee
  • Publication number: 20210259007
    Abstract: Provided is a method for designing downlink control channel for satisfying requirement of the different usage scenarios from each other in a next-generation/5G radio access network which has been discussed in the 3rd generation partnership project (3GPP). In particular, a method of a base station may be provided for transmitting/receiving data in a next-generation radio access network. The method may include configuring a time domain scheduling unit made up of at least one OFDM symbol for each user equipment, allocating a downlink data channel transmission resource with the time domain scheduling unit for a first user equipment, and puncturing a part of the downlink data channel transmission resource for the first user equipment and allocating the punctured resource to the downlink data channel transmission resource for a second user equipment.
    Type: Application
    Filed: May 4, 2021
    Publication date: August 19, 2021
    Inventors: Kyujin PARK, Woo-jin CHOI
  • Publication number: 20210258938
    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: May 4, 2021
    Publication date: August 19, 2021
    Inventors: Kyujin PARK, Woo-jin CHOI
  • Patent number: 11082957
    Abstract: Provided is a method for transmitting an uplink signal by a NarrowBand IoT (Internet of Things) UE and a device therefor. The method may include: receiving downlink data from a base station; generating HARQ ACK/NACK feedback information related to the downlink data; and transmitting the HARQ ACK/NACK feedback information to the base station through a Narrowband Physical Uplink Shared Channel (NPUSCH), wherein the NPUSCH is mapped to a resource unit configured by M subcarriers and K slots.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: August 3, 2021
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Patent number: 11044743
    Abstract: Provided is a method for designing downlink control channel for satisfying requirement of the different usage scenarios from each other in a next-generation/5G radio access network which has been discussed in the 3rd generation partnership project (3GPP). In particular, a method of a base station may be provided for transmitting/receiving data in a next-generation radio access network. The method may include configuring a time domain scheduling unit made up of at least one OFDM symbol for each user equipment, allocating a downlink data channel transmission resource with the time domain scheduling unit for a first user equipment, and puncturing a part of the downlink data channel transmission resource for the first user equipment and allocating the punctured resource to the downlink data channel transmission resource for a second user equipment.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: June 22, 2021
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Patent number: 11044777
    Abstract: Provided are a method of a base station for controlling transmission and reception of data through a network slice. The method includes: receiving network slice request information from a terminal in which a network slice is configured; controlling so as to deliver the network slice request information to a core network entity; and receiving, from the core network entity, specific network slice information configured on the basis of the network slice request information.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: June 22, 2021
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 11044718
    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: Grant
    Filed: February 17, 2020
    Date of Patent: June 22, 2021
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Publication number: 20210184807
    Abstract: Provided are a method of configuring resource block (RB) indexing information about a component carrier (CC) by a base station (BS). The method may include: configuring common RB indexing information about the CC; configuring one or more bandwidth parts (BWPs) based on the common RB indexing information; and transmitting the common RB indexing information and configuration information about the bandwidth parts to a terminal.
    Type: Application
    Filed: February 22, 2021
    Publication date: June 17, 2021
    Applicant: KT CORPORATION
    Inventors: Kyujin PARK, Woo-jin CHOI
  • Patent number: 11038735
    Abstract: Provided are a configuration method and a transmission method of a new reference signal for frequency offset estimation in a novel wireless communication system. The method may include configuring a synchronization signal to be transmitted through a first bandwidth part of one or more bandwidth parts configured by dividing an entire bandwidth into one or more parts, allocating the one or more reference signals for estimating the frequency offset on one or more resources other than a resource for configuring the synchronization signal, and transmitting the one or more reference signals for estimating the frequency offset.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: June 15, 2021
    Assignee: KT CORPORATION
    Inventors: Ki-tae Kim, Woo-jin Choi
  • Publication number: 20210168785
    Abstract: Provided is s a method for a base station to allocate a time interval resource to transceive a downlink data channel (PDSCH) or an uplink data channel (PUSCH). The method include allocating a time interval resource for each OFDM symbol on the basis of a slot or a mini-slot, transmitting, to a terminal, time interval resource configuration information including OFDM symbol allocation data for OFDM symbols used for data channel transception in the slot or the mini-slot, and transmitting, to the terminal, control information selecting one of the symbol allocation data included in the time interval resource configuration information.
    Type: Application
    Filed: February 9, 2021
    Publication date: June 3, 2021
    Applicant: KT CORPORATION
    Inventors: Kyujin PARK, Woo-jin CHOI
  • Publication number: 20210167894
    Abstract: Provided is a method of transmitting and receiving a data channel for the next-generation/5G radio access network. The method may include: receiving setting information about a code block group (CBG) for retransmission of the data channel from a base station; and receiving downlink control information (DCI) including scheduling information about the data channel from the base station, wherein the DCI includes transmission direction information about the CBG.
    Type: Application
    Filed: February 10, 2021
    Publication date: June 3, 2021
    Applicant: KT CORPORATION
    Inventors: Kyujin PARK, Woo-jin CHOI
  • Patent number: 11009237
    Abstract: An air cleaning unit includes a suction part into which contaminated air flows, a transfer body coupled with the suction part to support the suction part and to be raised up and down with the suction part; an elevation part connected to the transfer body and raising up and down the transfer body, a pivoting part connected to the suction part to pivot the suction part, and a filtering part communicating with the suction part and cleaning the contaminated air introduced into the suction part.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 18, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Wan Soo Kim, Yangkyeong Kim, Woo Jin Choi
  • Patent number: 11006467
    Abstract: Provided is a method and apparatus for processing control plane data to enable an evolve Node B (eNB) and a User Equipment (UE) to transmit and/or receive user plane data through a WLAN carrier when the user plane data is transmitted by adding a WLAN radio resource to an E-UTRAN carrier in a radio access network (RAN) level. Particularly, provided is a method for a UE to transmit and receive data, the method including: receiving, from an eNB, wireless local area network (WLAN) cell configuration information which is for transmitting and receiving data using a WLAN radio resource; performing WLAN association based on the WLAN cell configuration information; transmitting a WLAN access confirmation message to the eNB; and receiving, from the eNB through a higher layer signaling, tunnel configuration information which is for the UE to set up a tunnel with the eNB through the WLAN radio resource.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: May 11, 2021
    Assignee: KT CORPORATION
    Inventors: Sung-pyo Hong, Woo-jin Choi
  • Patent number: 11002795
    Abstract: Provided is a charger with a battery diagnosis function and a control method thereof. The charger with a battery diagnosis function includes a DC-DC converter configured to operate in a charging mode to charge a battery or to operate in a diagnosing mode to apply a perturbation voltage to the battery when the battery is fully charged, and a digital signal processor configured to calculate an equivalent circuit model parameter of the battery according to an output response of the battery with respect to the perturbation voltage, to calculate a charging/discharging frequency of the battery by using an ohmic resistance value among the equivalent circuit model parameter of the battery, and to calculate a residual equivalent capacity of the battery by using the charging/discharging frequency of the battery.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: May 11, 2021
    Assignee: Foundation of Soongsil University-Industry Cooperation
    Inventors: Woo Jin Choi, Duck Min Kim
  • Publication number: 20210120522
    Abstract: Provided are methods and devices for performing positioning in a next-generation wireless network. The method of a UE for performing positioning include identifying configuration information for a transmission bandwidth of a positioning reference signal (PRS) configured per cell and receiving the positioning reference signal corresponding to each cell based on the configuration information for the transmission bandwidth.
    Type: Application
    Filed: April 8, 2019
    Publication date: April 22, 2021
    Applicant: KT CORPORATION
    Inventors: Ki-tae KIM, Woo-jin CHOI, KI-HYEON PARK