Patents by Inventor Jung-Sun Um

Jung-Sun Um 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: 20210360420
    Abstract: Provided is a method and apparatus for determining an operating condition for frequency coexistence and an operating condition determining method includes a method of calculating and transferring an inference-free available frequency and an output level to an existing radio station that operates and needs to be protected or a method of calculating a channel access parameter for sharing a frequency with a heterogeneous device, a network, or a system.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 18, 2021
    Inventors: Jung Sun UM, Bong-Su KIM, Igor KIM, Seung Keun PARK
  • Patent number: 11140690
    Abstract: A method for transmitting an uplink signal in an unlicensed band by a terminal is provided. The terminal receives first scheduling information that schedules one or more uplink subframes, from a base station in a first downlink subframe. The terminal receives second scheduling information that determines a transmission time point of the uplink signal, from the base station in a second downlink subframe after the first downlink subframe. The terminal transmits the uplink signal in a first uplink subframe corresponding to the transmission time point among the one or more uplink subframes.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: October 5, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Hoiyoon Jung, Sungjin Yoo, Seung Keun Park
  • Publication number: 20210274509
    Abstract: A method of generating shared information includes determining an attenuation effect on transmission power of a new radio station due to a reception mask of an existing radio station, calculating an interference effect of the existing radio station due to the new radio station using the attenuation effect, determining a protection domain of the existing radio station according to the interference effect, and generating shared information to be used by the new radio station based on the protection domain, wherein the protection domain is a domain in which a frequency available to the new radio station is restricted.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 2, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Bong-Su Kim, Igor Kim, Seung Keun Park
  • Patent number: 11050506
    Abstract: An apparatus for analyzing a frequency use status may obtain a candidate radio network temporary identifier (RNTI) using downlink control information (DCI), estimate an active RNTI from the candidate RNTI, and analyze a frequency use status using the active RNTI.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: June 29, 2021
    Assignee: Electronics and Telecommunications Research institute
    Inventors: Jung Sun Um, Igor Kim, Seung Keun Park, Hyeyeon Kwon, Yunbae Kim, Young Hwan Lee
  • Patent number: 11044747
    Abstract: Disclosed is a method for scheduling an uplink transmission in a communication network. A terminal operation method comprises the steps of: detecting a control channel of a subframe #n transmitted from a base station; receiving an uplink grant from the control channel; and transmitting, to the base station, a plurality of subframes scheduled by the uplink grant. Thus, the performance of the communication network may be improved.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: June 22, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Hoi Yoon Jung, Seung Keun Park, Sung Jin Yoo
  • Publication number: 20210168853
    Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.
    Type: Application
    Filed: February 15, 2021
    Publication date: June 3, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun UM, Hoiyoon JUNG, Seung Keun PARK, Sungjin YOO
  • Publication number: 20210127282
    Abstract: A resource usage measuring method and an apparatus performing the same. The resource usage measuring method includes measuring a resource usage in a frequency domain based on a demodulation reference signal (DM-RS) transmitted from a base station, and measuring a resource usage in a time domain based on the DM-RS.
    Type: Application
    Filed: October 16, 2020
    Publication date: April 29, 2021
    Inventors: Jung Sun UM, Seung Keun PARK, Bong-Su KIM, Igor KIM
  • Patent number: 10932294
    Abstract: The present invention relates to a method for transmitting uplink data in a spectrum sharing wireless communication system wherein, in order to enhance uplink transmission efficiency in an LTE-U service, clear channel assessment (CCA) is performed on a user terminal so as to consider the hidden node problem, and channel occupation based on an uplink signal of another terminal is considered, wherein applied are: a method for generating and transmitting a random backoff counter value at a base station so that all terminals can equally use a channel connection parameter needed for transmitting an uplink subframe in an unlicensed band; and a downlink controlling method for scheduling an uplink multi-subframe.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: February 23, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jung Sun Um, Sung Jin Yoo, Hoi Yoon Jung, Seung Keun Park
  • Patent number: 10925085
    Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: February 16, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Hoiyoon Jung, Seung Keun Park, Sungjin Yoo
  • Patent number: 10856328
    Abstract: Disclosed is a method for communicating in a network supporting licensed and unlicensed bands. A terminal operation method comprises the steps of: detecting a control channel of a subframe #n transmitted from a base station; obtaining, from the control channel, a DCI for an uplink grant; executing channel sensing on the basis of channel connection-related information included in the DCI; and transmitting, to the base station, a subframe #(n+1) if the result of executing channel sensing is an idle state. Thus, the performance of the communication network may be improved.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: December 1, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Hoi Yoon Jung, Seung Keun Park, Sung Jin Yoo
  • Patent number: 10727979
    Abstract: Disclosed are operation methods of a communication node in a network supporting licensed and unlicensed bands. An operation method of a user equipment (UE) may comprises receiving, from a base station, a physical downlink control channel (PDCCH) including downlink control information (DCI) in a subframe n?1 of an unlicensed band; decoding the DCI using a common radio network temporary identifier (RNTI); and identifying the number of symbols of the subframe n?1 or a subframe n based on the decoded DCI. Therefore, a performance of the network can be enhanced.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: July 28, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Hoi Yoon Jung, Sung Jin Yoo, Seung Keun Park
  • Patent number: 10701752
    Abstract: The present invention relates to a device and method for allocating a coexistence resource in an unlicensed band. The device according to the present invention comprises: a frame configuration unit for configuring a subframe in which data and a reference signal for a channel in an unlicensed band are allocated, and allocating a part of the symbols of the subframe as a coexistence resource; a signal detection unit for detecting a signal of another LTE system or Wi-Fi system during a transmission idle period where the coexistence resource is allocated; and a transmission processing unit which, when the signal of another system is detected during the transmission idle period, does not occupy a resource for the next subframe, and when the occupation of the coexistence resource by the another system has ended, occupies the resource for the next subframe.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: June 30, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Kyu Min Kang, Seung Keun Park, Jae Cheol Park, Sung Jin Yoo, Dong Hun Lee, Hoi Yoon Jung, Su Na Choi, Sung Hyun Hwang
  • Patent number: 10673576
    Abstract: An operating method of a communication node in a network supporting licensed and unlicensed bands is disclosed. An operation method of a base station comprises the steps of: transmitting a PDSCH to a UE in an unlicensed band; receiving an HARQ response to the PDSCH from the UE; and determining a size of a CW on the basis of a proportion of NACKs in HARQ responses. Therefore, a performance of a communication network can be improved.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: June 2, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Sung Jin Yoo, Hoi Yoon Jung, Seung Keun Park
  • Patent number: 10630440
    Abstract: A method and an apparatus for transmitting and receiving a signal in a communication network are disclosed. A method for operating UE supporting an unlicensed band comprises the steps of: receiving from a base station DMTC-related information including DMTC cycle and DMTC offset; checking DMTC section to which DRS is transmitted based on the DMTC-related information; and receiving from the base station the DRS using sub-frames apart from a sub-frame corresponding to the DRS cycle within the DMTC section. As a result, the performance of a communication network can be improved.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: April 21, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hoi Yoon Jung, Sung Jin Yoo, Jung Sun Um, Seung Keun Park
  • Publication number: 20200106548
    Abstract: An apparatus for analyzing a frequency use status may obtain a candidate radio network temporary identifier (RNTI) using downlink control information (DCI), estimate an active RNTI from the candidate RNTI, and analyze a frequency use status using the active RNTI.
    Type: Application
    Filed: February 13, 2019
    Publication date: April 2, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun UM, Igor KIM, Seung Keun PARK, Hyeyeon KWON, Yunbae KIM, Young Hwan LEE
  • Patent number: 10595335
    Abstract: A scheduling method for a communication network supporting an unlicensed band is disclosed. An operation method of UE comprises the steps of: receiving, from a base station, an unlicensed band burst including a plurality of subframes in an unlicensed band; acquiring control information from the unlicensed band burst; and acquiring data from the unlicensed band burst on the basis of the control information. Therefore, the performance of the communication network can be improved.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: March 17, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hoi Yoon Jung, Jung Sun Um, Sung Jin Yoo, Seung Keun Park
  • Publication number: 20190191418
    Abstract: Provided is a method and apparatus for obtaining control information. A control information obtaining apparatus may receive wireless signals corresponding to different center frequencies from a plurality of cells, may estimate scheduling information from the wireless signals; and may obtain control information about a downlink of the plurality of cells based on the scheduling information.
    Type: Application
    Filed: March 28, 2018
    Publication date: June 20, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun UM, Seung Keun PARK
  • Patent number: 10135594
    Abstract: Disclosed is a scheduling method for a communication network supporting an unlicensed band. An operation method of a user equipment (UE) may comprise obtaining a control channel from a partial subframe having a length of less than 1 millisecond in an unlicensed band; obtaining scheduling information from the control channel; and obtaining a data channel indicated by the scheduling information from the partial subframe. Therefore, performance of the communication network can be enhanced.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: November 20, 2018
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hoi Yoon Jung, Sung Jin Yoo, Jung Sun Um, Seung Keun Park
  • Publication number: 20180323917
    Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.
    Type: Application
    Filed: December 28, 2016
    Publication date: November 8, 2018
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun UM, Hoiyoon JUNG, Seung Keun PARK, Sungjin YOO
  • Publication number: 20180317244
    Abstract: A method for transmitting an uplink signal in an unlicensed band by a terminal is provided. The terminal receives first scheduling information that schedules one or more uplink subframes, from a base station in a first downlink subframe. The terminal receives second scheduling information that determines a transmission time point of the uplink signal, from the base station in a second downlink subframe after the first downlink subframe. The terminal transmits the uplink signal in a first uplink subframe corresponding to the transmission time point among the one or more uplink subframes.
    Type: Application
    Filed: January 26, 2017
    Publication date: November 1, 2018
    Applicant: Electronics And Telecommunications Research Institute
    Inventors: Jung Sun UM, Hoiyoon JUNG, Sungjin YOO, Seung Keun PARK