Patents by Inventor Il-Gyu Kim

Il-Gyu Kim 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: 20210143873
    Abstract: A wireless communication method and apparatus in a wireless local area network (WLAN) system are disclosed.
    Type: Application
    Filed: January 21, 2021
    Publication date: May 13, 2021
    Inventors: Yu Ro LEE, Jae Woo PARK, Jae Seung LEE, Jee Yon CHOI, Il Gyu KIM, Seung Chan BANG
  • Patent number: 10993434
    Abstract: The present invention relates to an exopolysaccharide derived from Pseudoalteromonas sp. strain CY01 (KCTC 12867BP) which is a novel strain living in the polar regions, and to a composition for cryoprotection of cells, which contains the exopolysaccharide. The exopolysaccharide of the present invention has an excellent ability to cryoprotect cells, and shows no cytotoxicity. Thus, the inventive exopolysaccharide can substitute for conventional cryoprotective agents that show cytotoxicity when used at high concentrations.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: May 4, 2021
    Assignee: Korea Institute of Ocean Science and Technology
    Inventors: Joung Han Yim, Il-Chan Kim, Se Jong Han, Ui Joung Youn, Hong Kum Lee, Sung Jin Kim, Pil-Sung Kang, Jung Eun Kim, Tai Kyoung Kim, Ha Ju Park, Jin Haeng Song, Min Ju Kim, Ju Mi Hong, Dong-Gyu Jo
  • Publication number: 20210105826
    Abstract: A random access method, performed by a first terminal in a communication system, includes receiving, from a base station, PRACH configuration information including information on RA resource(s) used for transmission and reception of RA preamble(s) and RAR configuration information used for transmission and reception of RAR(s); transmitting a first RA preamble to the base station based on the information on the RA resource(s); when the first RA preamble is transmitted, performing a monitoring operation for receiving a first RAR that is a response to the first RA preamble; and selecting the first RAR for the first terminal from one or multiple RARs using the RAR configuration information in the monitoring operation.
    Type: Application
    Filed: September 23, 2020
    Publication date: April 8, 2021
    Inventors: Ji Soo PARK, Il Gyu KIM, Nam Suk LEE
  • Publication number: 20210058798
    Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.
    Type: Application
    Filed: November 10, 2020
    Publication date: February 25, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yu Ro LEE, Jae Woo PARK, Jae Seung LEE, Jee Yon CHOI, Il Gyu KIM, Seung Chan BANG
  • Patent number: 10931336
    Abstract: A wireless communication method and apparatus in a wireless local area network (WLAN) system are disclosed. A wireless communication method according to one embodiment may include generating a high-efficiency Wi-Fi (HEW) frame including at least one of an HEW-SIG-A field and an HEW-SIG-B field which include channel information for communications according to an Orthogonal Frequency-Division Multiple Access (OFDMA) mode, and transmitting the generated HEW frame to a reception apparatus.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: February 23, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Yu Ro Lee, Jae Woo Park, Jae Seung Lee, Jee Yon Choi, Il Gyu Kim, Seung Chan Bang
  • Patent number: 10917877
    Abstract: When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: February 9, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
  • Patent number: 10880828
    Abstract: Provided is a wireless communication method performed at an access point to enhance the transmission efficiency in a wireless local area network (WLAN) system, the method including scheduling a transmission time of an enhanced traffic indicator map (TIM) frame based on a type of a station, and transmitting a second beacon including the enhanced TIM frame to the station at a point in time aside from a transmission point in time of a first beacon.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: December 29, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Il Gyu Kim, Yu Ro Lee, Jae Seung Lee, Jae Woo Park, Jee Yon Choi
  • Publication number: 20200404594
    Abstract: An operation method of a first terminal, performed in a communication system, may comprise receiving sidelink resource allocation information from a base station; receiving a first sidelink signal from a second terminal based on the sidelink resource allocation information; calculating a path loss experienced by the first sidelink signal based on the first sidelink signal; transmitting a second sidelink signal including information on the path loss experienced by the first sidelink signal to the second terminal; and receiving, from the second terminal, a third sidelink signal to which a sidelink transmit power determined based on the path loss is allocated.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 24, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Go San NOH, Seon Ae KIM, IL GYU KIM, Jun Hyeong KIM, Hee Sang CHUNG, Dae Soon CHO, Sung Woo CHOI, Seung Nam CHOI, Jung Pil CHOI
  • Patent number: 10869205
    Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: December 15, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yu Ro Lee, Jae Woo Park, Jae Seung Lee, Jee Yon Choi, Il Gyu Kim, Seung Chan Bang
  • Patent number: 10827530
    Abstract: A method for transmitting and receiving a message for a random access (RA) between user equipment (UE) and a base station in a multi beam system includes: transmitting a synchronization signal (SS) block including a synchronization signal by performing beam sweeping for a multi beam; receiving a message 1 of an RA procedure from the UE; determining an optimal transmission beam to be used to transmit a message 2 of the RA procedure based on information about an association mapping between the SS block and a physical random access channel (PRACH) which is used to transmit the message 1; and transmitting the message 2 by using the optimal transmission beam.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: November 3, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Bing Hui, Il Gyu Kim, Junhyeong Kim, Gosan Noh, Hee Sang Chung, Sung Woo Choi
  • Patent number: 10820355
    Abstract: A method and an apparatus for random access in a mobile communication system are provided. A terminal receives a synchronization signal block, obtains beam index information from the received synchronization signal block, and transmits a preamble message occupying a plurality of preamble resources including a preamble resource corresponding to the beam index information to a base station. A random access resource includes a plurality of preamble resources, and the synchronization signal block is specified for one beam and corresponds to one preamble resource of the random access resource.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: October 27, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Bing Hui, Il Gyu Kim, Junhyeong Kim, Gosan Noh, Hee Sang Chung, Sung Woo Choi
  • Publication number: 20200336261
    Abstract: Disclosed are a frame transmission method and a communication device performing the same. The communication device transmits a null data packet (NDP)-announcement (NDP-A) including information on a plurality of communication devices participating in interference alignment and transmits an NDP including a common signal field and a common training field commonly applied to the plurality of communication devices.
    Type: Application
    Filed: July 6, 2020
    Publication date: October 22, 2020
    Inventors: Yu Ro LEE, Jae Woo PARK, Jae Seung LEE, Jee Yon CHOI, Il Gyu KIM, Seung Chan BANG
  • Patent number: 10708026
    Abstract: Disclosed are a frame transmission method and a communication device performing the same. The communication device may transmit a null data packet (NDP)-announcement (NDP-A) including information on a plurality of communication devices participating in interference alignment and transmit an NDP including a common signal field and a common training field commonly applied to the plurality of communication devices.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: July 7, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Yu Ro Lee, Jae Woo Park, Jae Seung Lee, Jee Yon Choi, Il Gyu Kim, Seung Chan Bang
  • Publication number: 20200196216
    Abstract: Provided are a method and a device for triggering a beam failure recovery (BFR) procedure of a multibeam system by means of the steps of: detecting a beam failure by monitoring a wireless link connected with a base station; identifying a candidate transmission beam of the base station; and transmitting a BFR request to the base station when the candidate transmission beam of the base station is identified.
    Type: Application
    Filed: July 24, 2018
    Publication date: June 18, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Bing HUI, IL GYU KIM, Junhyeong KIM, Gosan NOH, Hee Sang CHUNG, Sung Woo CHOI
  • Patent number: 10687366
    Abstract: A method of performing, by a device, a random access procedure in a radio communication system includes: receiving from a base station RACH configuration information; and transmitting a first message based on the received RACH configuration information. Herein, a plurality of SSBs may be in association with a plurality of preambles, and the first message may be transmitted in a time domain through a plurality of RACH resources.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: June 16, 2020
    Assignee: ELECTRONICS AND TELCOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Bing Hui, Il Gyu Kim, Jun Hyeong Kim, Go San Noh, Hee Sang Chung, Sung Woo Choi
  • Publication number: 20200106500
    Abstract: A method for sidelink groupcast transmission, performed by a transmitting terminal, may comprise configuring a first feedback resource located at a first time point and a second feedback resource located at a later time point than the first time point; transmitting groupcast control information and groupcast data to a receiving terminal group; receiving first feedback information through the first feedback resource from at least one terminal belonging to a first subgroup of the receiving terminal group; and receiving second feedback information through the second feedback resource from at least one terminal belonging to a second subgroup of the receiving terminal group.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 2, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Go San NOH, IL GYU KIM, Jun Hyeong KIM, Ju Ho PARK, Jung Hoon LEE, Jun Hwan LEE, Hee Sang CHUNG
  • Patent number: 10609736
    Abstract: A method and an apparatus for transmitting a message used to access a base station (BS) in a random access (RA) procedure by user equipment (UE) are provided. The method includes: determining a first RA preamble resource corresponding to an SSB index which corresponds to a transmission beam among a plurality of transmission beams of BS; and transmitting a message 1 of the RA procedure by using a first RA preamble format which includes the first RA preamble resource and at least one second RA preamble resource which neighbors the first RA preamble resource.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: March 31, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Bing Hui, Il Gyu Kim, Junhyeong Kim, Gosan Noh, Hee Sang Chung, Sung Woo Choi
  • Publication number: 20200053576
    Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.
    Type: Application
    Filed: October 22, 2019
    Publication date: February 13, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yu Ro LEE, Jae Woo PARK, Jae Seung LEE, Jee Yon CHOI, Il Gyu KIM, Seung Chan BANG
  • Publication number: 20200053704
    Abstract: A sidelink communication method performed by a UE in a communication system may comprise receiving, from a base station, a message including configuration information of a subchannel which is a sensing unit of a resource pool; determining a size of the subchannel based on the configuration information; and performing a sensing operation in units of the subchannel in the resource pool. Therefore, the sidelink communication can be efficiently performed, and the performance of the communication system can be improved.
    Type: Application
    Filed: August 13, 2019
    Publication date: February 13, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jun Hyeong KIM, IL GYU KIM, Go San NOH, Ju Ho PARK, Jung Hoon LEE, Jun Hwan LEE, Hee Sang CHUNG
  • Patent number: RE47910
    Abstract: The present invention relates to a method for generating a downlink frame including generating a first short sequence and a second short sequence indicating cell group information, generating a first scrambling sequence determined by the first synchronization signal, generating a second scrambling sequence determined by the first short sequence, scrambling the first short sequence with the first scrambling sequence, scrambling the second short sequence with at least the second scrambling sequence, and mapping a second synchronization signal including the scrambled first short sequence and the scrambled second short sequence in the frequency domain.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 17, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok Chang, Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Hyo Seok Yi, Moon Sik Lee, Young Hoon Kim, Seung Chan Bang