Patents by Inventor Woojin AHN

Woojin AHN 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: 11445546
    Abstract: Provided are a wireless communication terminal including: a processor; and a communication unit, wherein the processor obtains a backoff counter for an OFDMA-based random access of the terminal, wherein the backoff counter is obtained within a range of a contention window for the uplink OFDMA-based random access, receives a trigger frame indicating an uplink multi-user transmission, when one or more resource unit(s) in which random access can be performed is indicated by the trigger frame, decrements the backoff counter based on a number of resource units(s) in which random access can be performed, and when the backoff counter is 0 or decremented to 0, performs an uplink multi-user transmission through a selected resource unit among the resource units(s) and a wireless communication method using the same.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: September 13, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Juhyung Son, Jinsam Kwak, Geonjung Ko
  • Publication number: 20220287081
    Abstract: Provided is a wireless communication terminal. The wireless communication terminal includes a transceiver; and a processor. The processor is configured to receive a signaling field of a first PLCP Protocol Data Unit (PPDU) through the transceiver, and access a channel based on information identifying a Basic Service Set (BSS) indicated by the signaling field.
    Type: Application
    Filed: May 27, 2022
    Publication date: September 8, 2022
    Inventors: Juhyung SON, Geonjung KO, Jinsam KWAK, Woojin AHN
  • Patent number: 11438840
    Abstract: A wireless communication terminal for wireless communicating includes a first wireless transceiver transmitting and receiving a signal through a first waveform, a second wireless receiver receiving a signal through a second waveform different from the first waveform, and a processor. The processor may be configured to start receiving a variable length Wake-Up frame through the second wireless receiver, from a base wireless communication terminal of a basic service set (BSS) to which the wireless communication terminal belongs, determine whether or not a Frame Body field of the Wake-Up frame includes an identifier of the wireless communication terminal, when an ID field of the Wake-Up frame indicates an identifier of a group including the wireless communication terminal, and wake up the first wireless transceiver based on the Wake-Up frame, when the Frame Body field of the Wake-Up frame includes the identifier of the wireless communication terminal.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: September 6, 2022
    Assignee: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
    Inventors: Woojin Ahn, Juhyung Son, Jinsam Kwak
  • Publication number: 20220279528
    Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling simultaneous uplink transmissions of a plurality of terminals. To this end, provided are a wireless communication terminal, the terminal including: a transceiver; and a processor, wherein the processor is configured to: generate an uplink packet, wherein a predetermined field of a MAC header of the uplink packet indicates information on uplink data of the terminal, and transmit the generated uplink packet to a base wireless communication terminal, and a wireless communication method using the same.
    Type: Application
    Filed: May 13, 2022
    Publication date: September 1, 2022
    Inventors: Woojin AHN, Yongho KIM, Jinsam KWAK, Juhyung SON
  • Publication number: 20220272772
    Abstract: Provided is a wireless communication terminal that wirelessly communicates with a base wireless communication terminal. The wireless communication terminal includes a transceiver, and a processor. The processor is configured to set an integer selected from a range of 0 to a value equal to or smaller than an OFDMA Contention Window (OCW) as a counter for random access, receive a trigger frame for triggering random access using one or more resource units (RUs) allocated for the random access from the base wireless communication terminal using the transceiver, decrement a value of the counter based on the one or more RUs allocated for the random access, randomly select one RU based on the one or more RUs allocated for the random access when the value of the counter is 0 or reaches 0, and attempt transmission to the base wireless communication terminal using the selected RU.
    Type: Application
    Filed: May 12, 2022
    Publication date: August 25, 2022
    Inventors: Geonjung KO, Juhyung SON, Woojin AHN, Jinsam KWAK
  • Patent number: 11405161
    Abstract: Provided is a wireless communication terminal that communicates wirelessly. The wireless communication terminal includes: a transceiver; and a processor. The processor receiving trigger information from a base wireless communication terminal using the transceiver, and transmits an Aggregate-MAC Protocol Data Unit (A-MPDU) to the base wireless communication terminal based on the trigger information.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: August 2, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Juhyung Son, Geonjung Ko, Jinsam Kwak
  • Publication number: 20220240310
    Abstract: The present invention relates to a wireless communication method and a wireless communication terminal using a determination of basic service set identification information of a received frame, and more particularly, to a wireless communication method and a wireless communication terminal for performing an operation according to a determination result whether the received frame is an intra-BSS frame or an inter-BSS frame.
    Type: Application
    Filed: April 6, 2022
    Publication date: July 28, 2022
    Inventors: Geonjung KO, Juhyung SON, Jinsam KWAK, Woojin AHN
  • Publication number: 20220232632
    Abstract: Provided is a wireless communication terminal that communicates wirelessly. The wireless communication terminal includes: a transceiver; and a processor. The processor receives a first PLCP Protocol Data Unit (PPPU) through the transceiver, and transmits a second PPDU based on Basic Service Set (BSS) information indicated by the first PPDU.
    Type: Application
    Filed: April 7, 2022
    Publication date: July 21, 2022
    Inventors: Geonjung Ko, Juhyung Son, Jinsam Kwak, Woojin Ahn
  • Publication number: 20220232473
    Abstract: Provided is a wireless communication terminal that communicates wirelessly. The terminal includes: a wireless LAN (WLAN) transceiver configured to transmit and receive a WLAN signal; and a wake-up radio (WUR) receiver configured to receive a WUR signal. The WUR receiver is configured to receive a wake-up packet from a base wireless communication terminal and wakes-up the WLAN transceiver. A part of the WUR signal is transmitted by a modulation method different from a modulation method of the WLAN signal.
    Type: Application
    Filed: March 23, 2022
    Publication date: July 21, 2022
    Inventors: Juhyung Son, Jinsam Kwak, Geonjung Ko, Woojin Ahn
  • Publication number: 20220217780
    Abstract: The present invention relates to a wireless communication method for simultaneous data transmission and a wireless communication terminal using the same, and more particularly, a wireless communication method in which a plurality of terminals simultaneously transmit data for improving a data throughput in a high density environment, and a wireless communication terminal using the same. To this end, the present invention provides a wireless communication method for a terminal including transmitting a trigger frame indicating simultaneous uplink data transmission of multi-users, receiving uplink data transmitted by a plurality of terminals in response to the trigger frame, and transmitting a block acknowledgement for the plurality of terminals having transmitted the uplink data, and a wireless communication terminal using the same.
    Type: Application
    Filed: January 31, 2022
    Publication date: July 7, 2022
    Inventors: Woojin Ahn, Yongho Kim, Juhyung Son, Jinsam Kwak
  • Publication number: 20220217791
    Abstract: Provided is a wireless communication terminal that wirelessly communicates. the wireless communication terminal includes: a transceiver for transmitting and receiving a wireless signal; and a processor for processing the wireless signal. The processor is configured to perform a transmission based on a transmission opportunity (TXOP) limit which is a maximum value of a TXOP, which is a time interval in which a wireless communication terminal has a right to initiate a frame exchange sequence in a wireless medium.
    Type: Application
    Filed: March 22, 2022
    Publication date: July 7, 2022
    Inventors: Woojin AHN, Juhyung SON, Geonjung KO, Jinsam KWAK
  • Patent number: 11382067
    Abstract: The present invention relates to a wireless communication method for simultaneous transmit and receive of data and a wireless communication terminal using the same, and more particularly, to a wireless communication method and an apparatus thereof which can efficiently perform simultaneous data transmission and reception even in an overlapped BSS environment. To this end, provided are a wireless communication method of a terminal, including: performing a backoff procedure for transmitting data; transmitting a first RTS frame when a backoff counter of the backoff procedure is expired; setting a transmission timer for waiting for transmitting the data when a second RTS frame is received in response to the transmitted first RTS frame; and waiting for transmitting the data based on the set transmission timer and a wireless communication terminal using the same.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: July 5, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Patent number: 11375537
    Abstract: Provided is a wireless communication terminal. The wireless communication terminal includes a transceiver; and a processor. The processor is configured to receive a signaling field of a first PLCP Protocol Data Unit (PPDU) through the transceiver, and access a channel based on information identifying a Basic Service Set (BSS) indicated by the signaling field.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: June 28, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Juhyung Son, Geonjung Ko, Jinsam Kwak, Woojin Ahn
  • Patent number: 11375538
    Abstract: Provided is a wireless communication terminal. The wireless communication terminal includes a transceiver; and a processor. The processor is configured to receive a signaling field of a first PLCP Protocol Data Unit (PPDU) through the transceiver, and access a channel based on information identifying a Basic Service Set (BSS) indicated by the signaling field.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: June 28, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Juhyung Son, Geonjung Ko, Jinsam Kwak, Woojin Ahn
  • Patent number: 11368987
    Abstract: Provided is a wireless communication terminal that wirelessly communicates with a base wireless communication terminal. The wireless communication terminal includes a transceiver, and a processor. The processor is configured to set an integer selected from a range of 0 to a value equal to or smaller than an OFDMA Contention Window (OCW) as a counter for random access, receive a trigger frame for triggering random access using one or more resource units (RUs) allocated for the random access from the base wireless communication terminal using the transceiver, decrement a value of the counter based on the one or more RUs allocated for the random access, randomly select one RU based on the one or more RUs allocated for the random access when the value of the counter is 0 or reaches 0, and attempt transmission to the base wireless communication terminal using the selected RU.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: June 21, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Geonjung Ko, Juhyung Son, Woojin Ahn, Jinsam Kwak
  • Patent number: 11363613
    Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling simultaneous uplink transmissions of a plurality of terminals. To this end, provided are a wireless communication terminal, the terminal including: a transceiver; and a processor, wherein the processor is configured to: generate an uplink packet, wherein a predetermined field of a MAC header of the uplink packet indicates information on uplink data of the terminal, and transmit the generated uplink packet to a base wireless communication terminal, and a wireless communication method using the same.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: June 14, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Patent number: 11356947
    Abstract: The present invention relates to a wireless communication method and a wireless communication terminal using a non-contiguous channel. To this end, provided are a wireless communication terminal including a processor and a transceiver, wherein the processor receives a wireless packet through the communication unit, obtains total bandwidth information indicated via a bandwidth field of HE-SIG-A of the received packet, obtains information of an unassigned resource unit via at least one of the bandwidth field of the HE-SIG-A and a subfield of HE-SIG-B of the received packet, and decodes the received packet based on the total bandwidth information and the information of the unassigned resource unit and a wireless communication method using the same.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: June 7, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Juhyung Son, Jinsam Kwak, Geonjung Ko, Woojin Ahn
  • Publication number: 20220167460
    Abstract: Provided is a wireless communication terminal that wirelessly communicates. The wireless communication terminal includes a transceiver configured to transmit and receive wireless signals; and a processor configured to process the wireless signals. The processor is configured to: generate a trigger frame for triggering uplink transmission based random access of at least one wireless communication terminal, and insert the trigger frame into a physical layer protocol data unit (PPDU) to transmit the PPDU.
    Type: Application
    Filed: February 11, 2022
    Publication date: May 26, 2022
    Inventors: Geonjung KO, Woojin AHN, Juhyung SON, Jinsam KWAK
  • Publication number: 20220167461
    Abstract: Provided is a wireless communication terminal that wirelessly communicates. The wireless communication terminal includes a transceiver configured to transmit and receive wireless signals; and a processor configured to process the wireless signals. The processor is configured to: generate a trigger frame for triggering uplink transmission based random access of at least one wireless communication terminal, and insert the trigger frame into a physical layer protocol data unit (PPDU) to transmit the PPDU.
    Type: Application
    Filed: February 12, 2022
    Publication date: May 26, 2022
    Inventors: Geonjung KO, Woojin AHN, Juhyung SON, Jinsam KWAK
  • Patent number: 11343859
    Abstract: Provided is a wireless communication terminal that wirelessly communicates. the wireless communication terminal includes: a transceiver for transmitting and receiving a wireless signal; and a processor for processing the wireless signal. The processor is configured to perform a transmission based on a transmission opportunity (TXOP) limit which is a maximum value of a TXOP, which is a time interval in which a wireless communication terminal has a right to initiate a frame exchange sequence in a wireless medium.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: May 24, 2022
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Juhyung Son, Geonjung Ko, Jinsam Kwak