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).

  • WIRELESS COMMUNICATION TERMINAL AND WIRELESS COMMUNICATION METHOD FOR RANDOM ACCESS-BASED UPLINK MULTI-USER TRANSMISSION
    Publication number: 20210076423
    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: Application
    Filed: November 22, 2020
    Publication date: March 11, 2021
    Inventors: Woojin AHN, Juhyung SON, Jinsam KWAK, Geonjung KO
  • WIRELESS COMMUNICATION METHOD USING WAKE-UP RADIO AND WIRELESS COMMUNICATION TERMINAL THEREFOR
    Publication number: 20210068054
    Abstract: Disclosed is a wireless communication terminal for performing communication wirelessly. The wireless communication terminal includes: a first wireless transceiver, which transmits/receives a signal through a first waveform; a second wireless receiver, which receives a signal through a second waveform different from the first waveform; and a processor.
    Type: Application
    Filed: March 4, 2019
    Publication date: March 4, 2021
    Inventors: Woojin AHN, Juhyung SON, Jinsam KWAK
  • COCHLEAR EXTERNAL DEVICE WITH EXTERNAL MICROPHONE
    Publication number: 20210058718
    Abstract: A cochlear external device with an external microphone according to an embodiment of the present disclosure may include an external device body attached to a side of the head of a user, an internal microphone embedded in the external device body to collect sound, an external microphone located at the outside of the external device body to be attached around the ear of the user to collect sound, a connection cable configured to connect the external microphone and the external device body in a wired manner; and a control unit embedded in the external device body to generate an output signal based on the sound collected by at least one of the internal microphone and the external microphone and transmit the generated output signal to a cochlear implant transplanter.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 25, 2021
    Inventors: Kyou-Sik Min, Woojin Ahn
  • Aggregated-MPDU, method for transmitting response frame thereto, and wireless communication terminal using same
    Patent number: 10931396
    Abstract: The present invention relates to a method for transmitting an aggregate MPDU and a response frame thereto and a wireless communication terminal using the same, and more particularly, to a wireless communication method and a wireless communication terminal for setting various formats of the aggregate MPDU and the response frame thereto and performing an efficient data communication by using the same.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: February 23, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Juhyung Son, Geonjung Ko, Jinsam Kwak
  • Wireless communication method and wireless communication terminal
    Patent number: 10917189
    Abstract: Disclosed is a wireless communication terminal. The wireless communication terminal includes a transceiver transmitting/receiving a wireless signal; and a processor controlling an operation of the wireless communication terminal. The transceiver receives a first frame including information on a manner for accessing, by a plurality of wireless communication terminals including the wireless communication terminal, a base wireless communication terminal. The processor acquires a manner for accessing the base wireless communication terminal on a basis of the first frame. The transceiver accesses the base communication terminal on a basis of the manner for accessing the base wireless communication terminal. The base wireless communication terminal is any one communication terminal different from the plurality of wireless communication terminals.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: February 9, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Wireless communication terminal and wireless communication method for multi-user concurrent transmission
    Patent number: 10911186
    Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for efficiently managing simultaneous data transmissions of a plurality of terminals. To this end, provided are a base wireless communication terminal including: a transceiver configured to transmit and receive a wireless signal; and a processor configured to control an operation of the base wireless communication terminal, wherein the processor is configured to: transmit a trigger frame triggering a multi-user uplink transmission of a plurality of terminals, receive multi-user uplink data through resources allocated to the plurality of terminals, and transmit a block ACK through the resources in response to the received multi-user uplink data, wherein the transmission of the block ACK in each resource is terminated at the same time, and a wireless communication method using the same.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: February 2, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • WIRELESS COMMUNICATION METHOD FOR UPLINK MULTIPLE-USER TRANSMISSION SCHEDULE AND WIRELESS COMMUNICATION TERMINAL USING THE METHOD
    Publication number: 20210029722
    Abstract: The present invention relates to a wireless communication method for uplink multi-user transmission scheduling and a wireless communication terminal using the same. To this end, provided are a base wireless communication terminal comprising a processor and a transceiver, wherein the processor transmits a trigger frame soliciting an uplink multi-user transmission, determines whether the uplink multi-user transmission is successful based on received uplink multi-user data in response to the trigger frame, and retransmits the trigger frame when it is determined that the uplink multi-user transmission has failed and a wireless communication method using the same.
    Type: Application
    Filed: October 14, 2020
    Publication date: January 28, 2021
    Inventors: Jinsoo AHN, Woojin Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Wireless communication method using OFDMA random access and wireless communication terminal using same
    Patent number: 10904927
    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: November 22, 2019
    Date of Patent: January 26, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Geonjung Ko, Juhyung Son, Woojin Ahn, Jinsam Kwak
  • Wireless communication terminal and wireless communication method for random access-based uplink multi-user transmission
    Patent number: 10880924
    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 12, 2018
    Date of Patent: December 29, 2020
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Juhyung Son, Jinsam Kwak, Geonjung Ko
  • WIRELESS COMMUNICATION METHOD FOR SIMULTANEOUS DATA TRANSMISSION, AND WIRELESS COMMUNICATION TERMINAL USING SAME
    Publication number: 20200404716
    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: September 8, 2020
    Publication date: December 24, 2020
    Inventors: Woojin AHN, Yongho KIM, Juhyung SON, Jinsam KWAK
  • Wireless communication method and wireless communication terminal for spatial reuse operation
    Patent number: 10873973
    Abstract: The present invention relates a wireless communication method and a wireless communication terminal for supporting a spatial reuse operation of an overlapping basic service set to efficiently use a wireless resource. To this end, provided are a base wireless communication terminal including: a processor; and a communication unit, wherein the processor receives a PHY protocol data unit (PPDU) through the communication unit, determines whether the PPDU contains an intra-BSS frame or contains an inter-BSS frame based on preamble information of the PPDU, and performs either a first operation or a second operation distinct from each other according to a determination result and a wireless communication method using the same.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: December 22, 2020
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Geonjung Ko, Juhyung Son, Woojin Ahn, Jinsam Kwak
  • WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL
    Publication number: 20200383124
    Abstract: Provided is a wireless communication terminal. The wireless communication terminal includes: a transceiver configured for transmitting/receiving a wireless signal; and a processor configured for controlling an operation of the wireless communication terminal. The transceiver receives a first frame indicating that there is data to be transmitted from a base wireless communication terminal to a plurality of wireless communication terminals including the wireless communication terminal and receives data based on the first frame. The base wireless communication terminal is any one wireless communication terminal different from the plurality of wireless communication terminals.
    Type: Application
    Filed: August 16, 2020
    Publication date: December 3, 2020
    Inventors: Woojin AHN, Yongho KIM, Jinsam KWAK, Juhyung SON
  • WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL
    Publication number: 20200383125
    Abstract: Provided is a wireless communication terminal. The wireless communication terminal includes: a transceiver configured for transmitting/receiving a wireless signal; and a processor configured for controlling an operation of the wireless communication terminal. The transceiver receives a first frame indicating that there is data to be transmitted from a base wireless communication terminal to a plurality of wireless communication terminals including the wireless communication terminal and receives data based on the first frame. The base wireless communication terminal is any one wireless communication terminal different from the plurality of wireless communication terminals.
    Type: Application
    Filed: August 16, 2020
    Publication date: December 3, 2020
    Inventors: Woojin AHN, Yongho Kim, Jinsam Kwak, Juhyung Son
  • WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL IN HIGH-DENSITY ENVIRONMENT INCLUDING OVERLAPPED BASIC SERVICE SET
    Publication number: 20200367281
    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: August 3, 2020
    Publication date: November 19, 2020
    Inventors: Juhyung SON, Geonjung KO, Jinsam KWAK, Woojin AHN
  • WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL IN HIGH-DENSITY ENVIRONMENT INCLUDING OVERLAPPED BASIC SERVICE SET
    Publication number: 20200367280
    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: August 3, 2020
    Publication date: November 19, 2020
    Inventors: Juhyung Son, Geonjung Ko, Jinsam Kwak, Woojin Ahn
  • Wireless communication method for uplink multiple-user transmission schedule and wireless communication terminal using the method
    Patent number: 10841931
    Abstract: The present invention relates to a wireless communication method for uplink multi-user transmission scheduling and a wireless communication terminal using the same. To this end, provided are a base wireless communication terminal comprising a processor and a transceiver, wherein the processor transmits a trigger frame soliciting an uplink multi-user transmission, determines whether the uplink multi-user transmission is successful based on received uplink multi-user data in response to the trigger frame, and retransmits the trigger frame when it is determined that the uplink multi-user transmission has failed and a wireless communication method using the same.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: November 17, 2020
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Jinsoo Ahn, Woojin Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL IN HIGH DENSITY ENVIRONMENT INCLUDING OVERLAPPED BASIC SERVICE SETS
    Publication number: 20200359417
    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: July 30, 2020
    Publication date: November 12, 2020
    Inventors: Geonjung KO, Juhyung Son, Jinsam Kwak, Woojin Ahn
  • WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL IN HIGH DENSITY ENVIRONMENT INCLUDING OVERLAPPED BASIC SERVICE SET
    Publication number: 20200359416
    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: July 30, 2020
    Publication date: November 12, 2020
    Inventors: Geonjung KO, Juhyung SON, Jinsam KWAK, Woojin AHN
  • WIRELESS COMMUNICATION METHOD USING TRIGGER INFORMATION, AND WIRELESS COMMUNICATION TERMINAL USING SAME
    Publication number: 20200351059
    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: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Inventors: Woojin AHN, Juhyung SON, Geonjung KO, Jinsam KWAK
  • MULTI-USER WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL USING SAME
    Publication number: 20200344645
    Abstract: Provided is a wireless communication terminal that communicates wirelessly. The terminal includes: a transceiver; and a processor. The processor is configured to receive a trigger frame for triggering that a frame for setting a link with a wireless communication terminal, which is an AP, is transmitted through UpLink Multi User (UL MU) transmission through the transmission/reception unit. The processor transmits the frame for setting the link through UL MU transmission based on the trigger frame.
    Type: Application
    Filed: July 14, 2020
    Publication date: October 29, 2020
    Inventors: Woojin Ahn, Juhyung Son, Jinsam Kwak, Geonjung Ko, Yongho Kim