公开(公告)号：US11153759B2

公开(公告)日：2021-10-19

申请号：US16813660

申请日：2020-03-09

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  SK TELECOM CO., LTD.

Inventor： Geonjung Ko ,  Juhyung Son ,  Jinsam Kwak ,  Woojin Ahn

IPC: H04W16/02 ,  H04W52/14 ,  H04W28/20 ,  H04W52/34 ,  H04W84/12 ,  H04W72/04 ,  H04W88/02 ,  H04W52/24 ,  H04W24/08

Abstract: The present invention relates to a wireless communication method and a wireless communication terminal for a spatial reuse operation of an overlapping basic service set, and more particularly, to 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 wireless communication terminal including: a processor; and a communication unit, wherein the processor receives a trigger frame indicating an uplink multi-user transmission, and transmits a trigger-based PHY protocol data unit (PPDU) in response to the received trigger frame, wherein the trigger-based PPDU comprises a spatial reuse parameter for spatial reuse operation of an overlapping basic service set (OBSS) terminal and a wireless communication method using the same.

公开(公告)号：US11122496B2

公开(公告)日：2021-09-14

申请号：US16792166

申请日：2020-02-14

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  SK TELECOM CO., LTD.

Inventor： Geonjung Ko ,  Juhyung Son ,  Jinsam Kwak ,  Woojin Ahn

IPC: H04W48/08 ,  H04L12/46 ,  H04W48/16 ,  H04W74/00 ,  H04W88/08 ,  H04W84/12 ,  H04W74/08 ,  H04W48/12 ,  H04W48/20

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.

公开(公告)号：US20210235448A1

公开(公告)日：2021-07-29

申请号：US17227289

申请日：2021-04-10

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  SK TELECOM CO., LTD.

Inventor： Geonjung KO ,  Juhyung Son ,  Woojin Ahn ,  Jinsam Kwak

IPC: H04W72/04 ,  H04W74/00 ,  H04W48/18

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.

公开(公告)号：US10966251B2

公开(公告)日：2021-03-30

申请号：US16361283

申请日：2019-03-22

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  SK TELECOM CO., LTD.

Inventor： Woojin Ahn ,  Juhyung Son ,  Jinsam Kwak ,  Geonjung Ko

IPC: H04W74/08 ,  H04W84/12 ,  H04W74/00 ,  H04B7/0452

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.

公开(公告)号：US10813139B2

公开(公告)日：2020-10-20

申请号：US16371898

申请日：2019-04-01

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  SK TELECOM CO., LTD.

Inventor： Woojin Ahn ,  Yongho Kim ,  Juhyung Son ,  Jinsam Kwak

IPC: H04W74/08 ,  H04L1/16 ,  H04W74/00 ,  H04W72/04 ,  H04W84/12 ,  H04W74/04

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.

公开(公告)号：US10779233B2

公开(公告)日：2020-09-15

申请号：US16138965

申请日：2018-09-21

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Woojin Ahn ,  Juhyung Son ,  Jinsam Kwak

IPC: H04W52/02 ,  H04B7/02 ,  H04L27/00 ,  H04W74/00 ,  H04L5/00 ,  H04W84/12

Abstract: Provided is a wireless communication terminal that communicates wirelessly. The wireless communication terminal includes: a first wireless transceiver for transmitting and receiving a signal modulated by a first modulation method; a second wireless receiver for receiving a signal modulated by a second modulation method different from the first modulation method; and a processor. The processor is configured to receive a wake-up radio frame (WUR frame) from a base wireless communication terminal through the second wireless receiver, and based on the WUR frame, wake-up the first wireless transceiver to receive a beacon frame from the base wireless communication terminal according to a predetermined first reception period through the first wireless transceiver.

公开(公告)号：US20200213860A1

公开(公告)日：2020-07-02

申请号：US16812375

申请日：2020-03-09

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  SK TELECOM CO., LTD.

Inventor： Geonjung Ko ,  Juhyung Son ,  Jinsam Kwak ,  Woojin Ahn

IPC: H04W16/02 ,  H04W52/14 ,  H04W28/20 ,  H04W52/34

Abstract: The present invention relates to a wireless communication method and a wireless communication terminal for a spatial reuse operation of an overlapping basic service set, and more particularly, to 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 wireless communication terminal including: a processor; and a communication unit, wherein the processor receives a trigger frame indicating an uplink multi-user transmission, and transmits a trigger-based PHY protocol data unit (PPDU) in response to the received trigger frame, wherein the trigger-based PPDU comprises a spatial reuse parameter for spatial reuse operation of an overlapping basic service set (OBSS) terminal and a wireless communication method using the same.

公开(公告)号：US10660139B2

公开(公告)日：2020-05-19

申请号：US16503486

申请日：2019-07-04

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  SK TELECOM CO., LTD.

Inventor： Woojin Ahn ,  Juhyung Son ,  Geonjung Ko ,  Jinsam Kwak

IPC: H04W4/00 ,  H04W74/08 ,  H04B7/0417 ,  H04B7/06 ,  H04W84/12

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.

公开(公告)号：US10582520B2

公开(公告)日：2020-03-03

申请号：US15638307

申请日：2017-06-29

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Woojin Ahn ,  Yongho Kim ,  Jinsam Kwak ,  Juhyung Son

IPC: H04W72/12 ,  H04W84/12 ,  H04W74/08

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.

公开(公告)号：US12279311B2

公开(公告)日：2025-04-15

申请号：US18372125

申请日：2023-09-24

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  SK TELECOM CO., LTD.

Inventor： Woojin Ahn ,  Juhyung Son ,  Jinsam Kwak ,  Geonjung Ko

IPC: H04W74/08 ,  H04W74/0816 ,  H04W74/0833 ,  H04W84/12 ,  H04W74/0808

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.