公开(公告)号：US20220232632A1

公开(公告)日：2022-07-21

申请号：US17715040

申请日：2022-04-07

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

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

IPC: H04W74/08 ,  H04W84/12 ,  H04W52/24 ,  H04B17/318

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.

公开(公告)号：US11375544B2

公开(公告)日：2022-06-28

申请号：US16899435

申请日：2020-06-11

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

Inventor： Juhyung Son ,  Jinsam Kwak ,  Geonjung Ko

IPC: H04W4/00 ,  H04W74/08 ,  H04W84/12 ,  H04W72/08 ,  H04B17/318

Abstract: A wireless communication terminal comprises a transceiver configured to transmit and receive a wireless signal; and a processor configured to control an operation of the terminal, wherein the processor is configured to: perform a backoff procedure of a channel for data transmission, suspend the backoff procedure when a wireless signal having a signal strength higher than a predetermined first clear channel assessment (CCA) threshold is received through the channel, identify whether the received wireless signal is a wireless signal of the same basic service set (BSS) as the terminal, and determine whether to resume the backoff procedure based on a CCA threshold determined according to the identification result and a wireless communication method for performing an efficient clear channel assessment for spatial reuse of a communication system use the same.

公开(公告)号：US11375537B2

公开(公告)日：2022-06-28

申请号：US16945934

申请日：2020-08-03

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

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

IPC: H04W74/00 ,  H04W84/12 ,  H04W74/08 ,  H04W28/04 ,  H04W28/06 ,  H04W24/02 ,  H04B7/26 ,  H04L27/26 ,  H04L69/22 ,  H04W52/50

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.

公开(公告)号：US11368987B2

公开(公告)日：2022-06-21

申请号：US17127008

申请日：2020-12-18

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

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

IPC: H04L5/00 ,  H04W72/04 ,  H04W84/12 ,  H04W74/00 ,  H04W74/08 ,  H04L27/26 ,  H04L1/00 ,  H04L1/16 ,  H04W28/06

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.

公开(公告)号：US11283570B2

公开(公告)日：2022-03-22

申请号：US16844817

申请日：2020-04-09

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

Inventor： Juhyung Son ,  Jinsam Kwak ,  Geonjung Ko

IPC: H04L5/00 ,  H04W72/04 ,  H04L27/26

Abstract: A wireless communication terminal is disclosed. The wireless communication terminal includes a transceiver configured to transmit/receive a wireless signal; and a processor configured to control an operation of the wireless communication terminal. The transceiver transmits a training signal to a base wireless communication terminal based on a sub-frequency band allocated from the base wireless communication terminal, and transmits data to the base wireless communication terminal through the sub-frequency band allocated from the base wireless communication terminal. The training signal is used, by the base wireless communication terminal, for receiving the data from the wireless communication terminal.

公开(公告)号：US11196513B2

公开(公告)日：2021-12-07

申请号：US16851078

申请日：2020-04-16

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

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

IPC: H04L1/16 ,  H04L1/00 ,  H04L1/18 ,  H04L29/06 ,  H04L5/00 ,  H04W84/12 ,  H04W72/12 ,  H04L1/06 ,  H04L29/08

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 Downlink Multi-User (DL MU) PPDU including information for an Uplink Multi-User (UL MU) transmission from a base wireless communication terminal by using the transceiver, and transmit the UL MU PPDU to the base wireless communication terminal based on the information for UL MU transmission.

公开(公告)号：US11166040B2

公开(公告)日：2021-11-02

申请号：US17113215

申请日：2020-12-07

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

Inventor： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC: H04N19/513 ,  H04N19/53 ,  H04N19/57

Abstract: An apparatus for decoding a video signal, the apparatus comprising a processor, wherein the processor is configured to: configure a Motion Vector Prediction (MVP) candidate list for motion compensation of a current block through one of a first method and a second method, acquire a motion vector predictor of the current block, based on the configured MVP candidate list, acquire a motion vector differential value indicating a difference between a motion vector of the current block and the motion vector predictor, modify the motion vector differential value, based on a resolution of the motion vector differential value of the current block, acquire the motion vector of the current block, based on the motion vector predictor and the modified motion vector differential value, and reconstruct the current block, based on the acquired motion vector.

公开(公告)号：US11140556B2

公开(公告)日：2021-10-05

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 ,  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：US10904927B2

公开(公告)日：2021-01-26

申请号：US16693203

申请日：2019-11-22

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

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

IPC: H04W74/08 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04L1/00 ,  H04L1/16 ,  H04W28/06 ,  H04W74/00 ,  H04W84/12

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.

公开(公告)号：US20200305196A1

公开(公告)日：2020-09-24

申请号：US16899435

申请日：2020-06-11

Applicant: Wilus Institute of Standards and Technology Inc. ,  SK TELECOM CO., LTD.

Inventor： Juhyung SON ,  Jinsam Kwak ,  Geonjung Ko

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

Abstract: The present invention relates to a wireless communication terminal and wireless communication method for clear channel assessment, and more particularly, to a wireless communication terminal and a wireless communication method for performing an efficient clear channel assessment for spatial reuse of a communication system.For this, provided are a wireless communication terminal comprising: a transceiver configured to transmit and receive a wireless signal; and a processor configured to control an operation of the terminal, wherein the processor is configured to: perform a backoff procedure of a channel for data transmission, suspend the backoff procedure when a wireless signal having a signal strength higher than a predetermined first clear channel assessment (CCA) threshold is received through the channel, identify whether the received wireless signal is a wireless signal of the same basic service set (BSS) as the terminal, and determine whether to resume the backoff procedure based on a CCA threshold determined according to the identification result and a wireless communication method using the same.