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: 11122495
    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 frame through the transceiver, determine whether the frame is classified into an Intra-Basic Service Set (BSS) frame or an Inter-BSS frame according to a BSS from which the frame is transmitted, and access a channel according to whether the frame is an Intra-BSS frame or an Inter-BSS frame.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: September 14, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Geonjung Ko, Juhyung Son, Jinsam Kwak, Woojin Ahn
  • Patent number: 11116035
    Abstract: Provided is a wireless communication terminal that communicates wirelessly. The wireless communication terminal includes a transceiver and a processor for processing a radio signal received through the transceiver or a radio signal to be transmitted through the transceiver. The processor accesses a channel according to according to a priority of data to be transmitted to the base communication terminal by the wireless communication terminal.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: September 7, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Juhyung Son, Geonjung Ko, Jinsam Kwak
  • Patent number: 11102778
    Abstract: Provided is a wireless communication terminal including a transceiver for transmitting/receiving a wireless signal and a processor for controlling an operation of the wireless communication terminal. The transceiver receives a first frame indicating information on a resource that a base wireless communication terminal allocates to a plurality of wireless communication terminals from the base wireless communication terminal, and transmits data to the base wireless communication terminal based on the first frame. The plurality of wireless communication terminals include the wireless communication terminal.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: August 24, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Patent number: 11095416
    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: October 8, 2019
    Date of Patent: August 17, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Juhyung Son, Geonjung Ko, Jinsam Kwak
  • Publication number: 20210235448
    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 frame through the transceiver, determine whether the frame is classified into an Intra-Basic Service Set (BSS) frame or an Inter-BSS frame according to a BSS from which the frame is transmitted, and access a channel according to whether the frame is an Intra-BSS frame or an Inter-BSS frame.
    Type: Application
    Filed: April 10, 2021
    Publication date: July 29, 2021
    Inventors: Geonjung KO, Juhyung Son, Woojin Ahn, Jinsam Kwak
  • Publication number: 20210211236
    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: Application
    Filed: January 11, 2021
    Publication date: July 8, 2021
    Inventors: Woojin AHN, Yongho KIM, Jinsam KWAK, Juhyung SON
  • Publication number: 20210195524
    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: Application
    Filed: March 22, 2019
    Publication date: June 24, 2021
    Inventors: Woojin AHN, Juhyung SON, Jinsam KWAK
  • Publication number: 20210185731
    Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for a multi-user EDCA operation, and more particularly, to a wireless communication terminal and a wireless communication method for performing a combination of a legacy EDCA operation and a multi-user EDCA operation. To this end, provided are a wireless communication terminal including: a communication unit; and a processor configured to control transmission and reception of a wireless signal through the communication unit, wherein the processor updates enhanced distributed channel access (EDCA) parameters for channel access, the EDCA parameters being updated based on an EDCA parameter set selected from a first EDCA parameter set and a second EDCA parameter set, and performs channel access based on the updated EDCA parameters and a wireless communication method using the same.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 17, 2021
    Inventors: Woojin Ahn, Juhyung Son, Jinsam Kwak, Geonjung Ko
  • Publication number: 20210185732
    Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for a multi-user EDCA operation, and more particularly, to a wireless communication terminal and a wireless communication method for performing a combination of a legacy EDCA operation and a multi-user EDCA operation. To this end, provided are a wireless communication terminal including: a communication unit; and a processor configured to control transmission and reception of a wireless signal through the communication unit, wherein the processor updates enhanced distributed channel access (EDCA) parameters for channel access, the EDCA parameters being updated based on an EDCA parameter set selected from a first EDCA parameter set and a second EDCA parameter set, and performs channel access based on the updated EDCA parameters and a wireless communication method using the same.
    Type: Application
    Filed: February 26, 2021
    Publication date: June 17, 2021
    Inventors: Woojin AHN, Juhyung SON, Jinsam KWAK, Geonjung KO
  • Publication number: 20210176799
    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: December 18, 2020
    Publication date: June 10, 2021
    Inventors: Geonjung KO, Juhyung SON, Woojin AHN, Jinsam KWAK
  • Publication number: 20210176770
    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: June 10, 2021
    Inventors: Jinsoo AHN, Woojin Ahn, Yongho Kim, Jinsam kwak, Juhyung Son
  • Publication number: 20210152276
    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: Application
    Filed: January 25, 2021
    Publication date: May 20, 2021
    Inventors: Woojin AHN, Juhyung SON, Geonjung KO, Jinsam KWAK
  • Publication number: 20210152275
    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: Application
    Filed: January 25, 2021
    Publication date: May 20, 2021
    Inventors: Woojin AHN, Juhyung Son, Geonjung Ko, Jinsam Kwak
  • Patent number: 11006434
    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: January 25, 2020
    Date of Patent: May 11, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Publication number: 20210126727
    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: Application
    Filed: December 31, 2020
    Publication date: April 29, 2021
    Inventors: Woojin AHN, Yongho KIM, Jinsam KWAK, Juhyung SON
  • Publication number: 20210119720
    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: Application
    Filed: December 31, 2020
    Publication date: April 22, 2021
    Inventors: Woojin AHN, Yongho Kim, Jinsam Kwak, Juhyung Son
  • Publication number: 20210105818
    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 23, 2020
    Publication date: April 8, 2021
    Inventors: Woojin AHN, Juhyung SON, Jinsam KWAK, Geonjung KO
  • Patent number: 10966251
    Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for a multi-user EDCA operation, and more particularly, to a wireless communication terminal and a wireless communication method for performing a combination of a legacy EDCA operation and a multi-user EDCA operation. To this end, provided are a wireless communication terminal including: a communication unit; and a processor configured to control transmission and reception of a wireless signal through the communication unit, wherein the processor updates enhanced distributed channel access (EDCA) parameters for channel access, the EDCA parameters being updated based on an EDCA parameter set selected from a first EDCA parameter set and a second EDCA parameter set, and performs channel access based on the updated EDCA parameters and a wireless communication method using the same.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: March 30, 2021
    Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., SK TELECOM CO., LTD.
    Inventors: Woojin Ahn, Juhyung Son, Jinsam Kwak, Geonjung Ko
  • Publication number: 20210092771
    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: Application
    Filed: December 5, 2020
    Publication date: March 25, 2021
    Inventors: Geonjung KO, Juhyung SON, Woojin AHN, Jinsam KWAK
  • Publication number: 20210092770
    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: Application
    Filed: December 5, 2020
    Publication date: March 25, 2021
    Inventors: Geonjung Ko, Juhyung Son, Woojin Ahn, Jinsam Kwak