Patents by Inventor Min-Ho Cheong

Min-Ho Cheong 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: 11476988
    Abstract: Provided are a transmitter and a method for transmitting a data block in a wireless communication system. The method comprises the following steps: deciding the number of bits (s) and encoders (NES) to allocate to one axis of a signal constellation; encoding an information bit based on the s and the NES and generating a coded block; parsing the coded block based on the s and the NES and generating a plurality of frequency sub-blocks; and transmitting the plurality of frequency sub-blocks to a receiver.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: October 18, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jong Ee Oh, Min Ho Cheong, Sok Kyu Lee
  • Patent number: 11463293
    Abstract: An apparatus and method for orthogonal frequency division multiplexing (OFDM) transmission in a wireless local area network (WLAN) system is disclosed, in which the apparatus for OFDM transmission in the WLAN system includes a signal repetition unit to repeat an encoded signal based on a block unit and output the encoded signal and a repeated signal, an interleaver to interleave the encoded signal and the repeated signal and output an interleaved signal, a modulator to modulate the interleaved signal and output modulated symbols, and a phase rotation unit to phase shift the modulated symbol.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: October 4, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hee Jung Yu, Min Ho Cheong, Jae Seung Lee, Hyoung Jin Kwon, Sok Kyu Lee
  • Publication number: 20220231735
    Abstract: The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.
    Type: Application
    Filed: April 9, 2022
    Publication date: July 21, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jae Woo PARK, Jong Ee OH, Il-Gu LEE, Sok-Kyu LEE, Min Ho CHEONG, Jee Yon CHOI, Jae Seung LEE, Yun Joo KIM
  • Patent number: 11309945
    Abstract: The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: April 19, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Woo Park, Jong Ee Oh, Il-Gu Lee, Sok-Kyu Lee, Min Ho Cheong, Jee Yon Choi, Jae Seung Lee, Yun Joo Kim
  • Patent number: 11304186
    Abstract: A method for channel sounding in a wireless local area network (WLAN) system and apparatus for the same is disclosed. An access point (AP) to perform the method for channel sounding broadcasts information on a restricted access window (RAW) for channel sounding included in a beacon, and transmits null data packets (NDP) for channel estimation in the RAW to a station (STA). The STA estimates channel information based on the NDPs, and transmits the estimated channel information to the AP.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: April 12, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Min ho Cheong, Hyoung Jin Kwon, Jae Seung Lee, Sok Kyu Lee
  • Patent number: 11284345
    Abstract: An operating mode change method of a wireless local area network (WLAN) system according to an exemplary embodiment includes transmitting, by a station (STA) to an access point (AP), an operating mode change request frame comprising at least one of information on a change of a traffic indication map (TIM) mode, a request for a change of a power save parameter, and information on a change of a service type of the STA, receiving, from the AP, an operating mode change response frame comprising at least one of a TIM mode allowed by the AP, a reallocated association identification (AID), and information on a changed power save parameter, and performing at least one of the change of the TIM mode and the change of the power save parameter based on the information included in the operating mode change.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: March 22, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae Seung Lee, Hyoung Jin Kwon, Min ho Cheong, Hee Jung Yu, Sok Kyu Lee
  • Publication number: 20220030509
    Abstract: A scanning method in a wireless local area network (WLAN) system is provided. The scanning method includes transmitting, by a station, a probe request frame and receiving, by the station, a probe response frame from an access point (AP). The AP determines whether to transmit the probe response frame in response to the probe request frame using information indicated by the probe request frame.
    Type: Application
    Filed: October 8, 2021
    Publication date: January 27, 2022
    Inventors: Jae Seung LEE, Min ho CHEONG, Je Hun LEE, Ja Beom GU, Jae Woo PARK, Sok Kyu LEE
  • Patent number: 11219058
    Abstract: The present invention relates to a terminal for requesting and acquiring information relating to channel access in a wireless LAN, and to an apparatus for providing information relating to channel access in a wireless LAN. The terminal for requesting and acquiring information relating to channel access in a wireless LAN according to one embodiment of the invention verifies the reception of a beacon during a preset beacon interval, if it is verified that the beacon has not been received, transmits a group and slot information request signal, and receives, from an access point, a group and slot information response signal as a response to the group and slot information request signal.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: January 4, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyoung Jin Kwon, Jae Seung Lee, Min ho Cheong, Hee Jung Yu, Sok Kyu Lee
  • Patent number: 11218953
    Abstract: A scanning method performed by a station (STA) in a wireless LAN system is provided. The method comprises: transmitting a probe request frame; and receiving a short probe response frame from an access point (AP) as a response to the probe request frame. The short probe response frame includes service set ID (SSID) information or compressed SSID information of the AP.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: January 4, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae Seung Lee, Min Ho Cheong, Hyoung Jin Kwon, Hee Jung Yu, Sok Kyu Lee
  • Patent number: 11219038
    Abstract: Disclosed are a wireless communication method, and an access point and a station which perform the wireless communication method. A wireless communication method performed by an access point according to an embodiment may include performing channel sounding on a plurality of subchannels, identifying subchannels selected by stations among the subchannels, scheduling communications between the AP and the stations based on the selected subchannels, and transmitting a data frame to the stations through the subchannels based on a scheduling result.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: January 4, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyoung Jin Kwon, Sok Kyu Lee, Jae Seung Lee, Min ho Cheong
  • Patent number: 11172434
    Abstract: A scanning method in a wireless local area network (WLAN) system is provided. The scanning method includes transmitting, by a station, a probe request frame and receiving, by the station, a probe response frame from an access point (AP). The AP determines whether to transmit the probe response frame in response to the probe request frame using information indicated by the probe request frame.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: November 9, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae Seung Lee, Min ho Cheong, Je Hun Lee, Ja Beom Gu, Jae Woo Park, Sok Kyu Lee
  • Patent number: 11172518
    Abstract: Provided is slot use control apparatus and method, including an access point (AP) to control a slotted channel access of a station (STA) in a wireless local area network (WLAN) includes generating a synchronization (synch) frame including an identification value indicating an STA allocated to a slot, and broadcasting the generated synch frame when a channel is in an idle state at a start point of the slot.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: November 9, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyoung Jin Kwon, Jae Seung Lee, Min Ho Cheong, Hee Jung Yu, Jae Woo Park, Sok Kyu Lee
  • Patent number: 11139863
    Abstract: Disclosed is a communication method using interference alignment in a wireless local area network (WLAN). An access point (AP) according to one embodiment may receive first channel information between a station associated with the AP and the AP and second channel information between the station and a neighboring AP to perform interference alignment in cooperation with the AP from the station, and perform interference alignment based on the first channel information and the second channel information.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: October 5, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Seung Lee, Jin Hyung Oh, Gwang Zeen Ko, Hyun Duk Kang, Hyoung Jin Kwon, Myung Sun Song, Sok Kyu Lee, Min Ho Cheong, Jae Ick Choi
  • Patent number: 11032846
    Abstract: Disclosed are a method and apparatus for an access point (AP) to control channel access of a station in a wireless local area network (WLAN) system. An AP according to one embodiment may determine resource allocation information for protecting a resource for a station not referring to traffic indication map (TIM) information. The determined resource allocation information is transmitted to a station referring to the TIM information, and the station referring to the TIM information does not conduct channel access in a time period specified in the resource allocation information.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: June 8, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyoung Jin Kwon, Hee Jung Yu, Sok Kyu Lee, Jae Seung Lee, Min Ho Cheong
  • Publication number: 20210135807
    Abstract: Provided are a transmitter and a method for transmitting a data block in a wireless communication system. The method comprises the following steps: deciding the number of bits (s) and encoders (NES) to allocate to one axis of a signal constellation; encoding an information bit based on the s and the NES and generating a coded block; parsing the coded block based on the s and the NES and generating a plurality of frequency sub-blocks; and transmitting the plurality of frequency sub-blocks to a receiver.
    Type: Application
    Filed: November 16, 2020
    Publication date: May 6, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jong Ee OH, Min Ho CHEONG, Sok Kyu LEE
  • Patent number: 10939452
    Abstract: Provided are a method of allocating resources in a wireless local area network (WLAN) system and the WLAN system including an access point (AP) to allocate a resource for communication between a relay and a station associated with the relay, the relay to allocate a restricted access window (RAW) or a slot for communication with a station based on the allocated resource, and the station to communicate with the relay based on the allocated RAW or the allocated slot.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: March 2, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae Seung Lee, Min ho Cheong, Hyoung Jin Kwon, Sok Kyu Lee, Wun Cheol Jeong, Chang Sub Shin, Cheol Sig Pyo
  • Patent number: 10897759
    Abstract: Provided is a method and apparatus for allocating resources in a wireless local area network (WLAN) system, the method including determining a restricted access bandwidth (RAB) interval based on at least a bandwidth or a partial bandwidth among a plurality of bandwidths, and setting a restricted access window (RAW) of a time domain based on the RAB interval.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: January 19, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Min ho Cheong, Hyoung Jin Kwon, Jae Seung Lee, Jae Woo Park, Sok Kyu Lee
  • Patent number: 10897736
    Abstract: Provided is a sector discovery apparatus and method, the method including setting, by an AP in a WLAN system, an omni-beacon interval for transmitting an omnidirectional beacon and sector beacon intervals for transmitting a sector beacon with respect to one of a plurality of sectors which are spatially divided, transmitting the sector beacon to a current sector among the plurality of sectors, transmitting, to the current sector, a transmission frame indicating sectorized transmission or a transmission frame indicating omnidirectional transmission, in a sector interval between the sector beacon intervals, and receiving, from a terminal located in the current sector, a response frame indicating an association performed by receiving the transmission frame indicating the sectorized transmission.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: January 19, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae Seung Lee, Min ho Cheong, Hyoung Jin Kwon, Jae Woo Park, Sok Kyu Lee
  • Publication number: 20200412593
    Abstract: An apparatus and method for orthogonal frequency division multiplexing (OFDM) transmission in a wireless local area network (WLAN) system is disclosed, in which the apparatus for OFDM transmission in the WLAN system includes a signal repetition unit to repeat an encoded signal based on a block unit and output the encoded signal and a repeated signal, an interleaver to interleave the encoded signal and the repeated signal and output an interleaved signal, a modulator to modulate the interleaved signal and output modulated symbols, and a phase rotation unit to phase shift the modulated symbol.
    Type: Application
    Filed: September 16, 2020
    Publication date: December 31, 2020
    Inventors: Hee Jung YU, Min Ho CHEONG, Jae Seung LEE, Hyoung Jin KWON, Sok Kyu LEE
  • Patent number: 10841056
    Abstract: Provided are a transmitter and a method for transmitting a data block in a wireless communication system. The method comprises the following steps: deciding the number of bits (s) and encoders (NES) to allocate to one axis of a signal constellation; encoding an information bit based on the s and the NES and generating a coded block; parsing the coded block based on the s and the NES and generating a plurality of frequency sub-blocks; and transmitting the plurality of frequency sub-blocks to a receiver.
    Type: Grant
    Filed: March 24, 2019
    Date of Patent: November 17, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jong Ee Oh, Min Ho Cheong, Sok Kyu Lee