公开(公告)号：US20200322279A1

公开(公告)日：2020-10-08

申请号：US16908335

申请日：2020-06-22

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

Inventor： Jinsoo AHN ,  Yongho Kim ,  Jinsam Kwak ,  Juhyung Son

IPC: H04L12/873 ,  H04L1/18 ,  H04L1/16 ,  H04L12/869 ,  H04L12/865 ,  H04W74/00 ,  H04W74/08

Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling uplink multi-user transmission.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 transceiver, wherein the processor selects an access category for transmitting a trigger frame which solicits an uplink multi-user transmission, performs a backoff procedure for transmitting the trigger frame based on the selected access category, and transmits the trigger frame when a backoff counter of the backoff procedure expires and a wireless communication method using the same.

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.

公开(公告)号：US10771910B2

公开(公告)日：2020-09-08

申请号：US16395242

申请日：2019-04-26

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Hyunoh Oh ,  Taegyu Lee ,  Jinsam Kwak ,  Juhyung Son

IPC: H04S3/00 ,  G10L19/20

Abstract: The present invention relates to a method and an apparatus for processing an audio signal, and more particularly, to a method and an apparatus for processing an audio signal, which synthesize an object signal and a channel signal and effectively perform binaural rendering of the synthesized signal.To this end, provided are a method for processing an audio signal, which includes: receiving an input audio signal including a multi-channel signal; receiving truncated subband filter coefficients for filtering the input audio signal, the truncated subband filter coefficients being at least some of subband filter coefficients obtained from binaural room impulse response (BRIR) filter coefficients for binaural filtering of the input audio signal and the length of the truncated subband filter coefficients being determined based on filter order information obtained by at least partially using reverberation time information extracted from the corresponding subband filter coefficients; obtaining vector information indicating the BRIR filter coefficients corresponding to each channel of the input audio signal; and filtering each subband signal of the multi-channel signal by using the truncated subband filter coefficients corresponding to the relevant channel and subband based on the vector information and an apparatus for processing an audio signal by using the same.

公开(公告)号：US20200245375A1

公开(公告)日：2020-07-30

申请号：US16851108

申请日：2020-04-17

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

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

IPC: H04W74/08 ,  H04L27/00 ,  H04L5/00 ,  H04W72/12 ,  H04L1/18 ,  H04L1/00 ,  H04W28/26 ,  H04W74/00

Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling multi-user uplink transmission.To this end, provided are a wireless communication terminal, including: a transceiver; and a processor, wherein the processor is configured to: receive, by the transceiver, a trigger frame that triggers a multi-user uplink transmission, perform a multi-user uplink transmission in response to the received trigger frame, and receive, by the transceiver, an ACK for the multi-user uplink transmission, wherein when the multi-user uplink transmission is performed on a resource unit in which a temporary association identifier (AID) is assigned by the received trigger frame, the processor obtains ACK information for the terminal from the ACK for the multi-user uplink transmission based on the temporary AID and a wireless communication method using the same.

公开(公告)号：US20200244402A1

公开(公告)日：2020-07-30

申请号：US16851101

申请日：2020-04-17

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

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

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

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：US20200213861A1

公开(公告)日：2020-07-02

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

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：US20200178266A1

公开(公告)日：2020-06-04

申请号：US16787019

申请日：2020-02-11

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok Noh ,  Jinsam Kwak ,  Juhyung Son

IPC: H04W72/12 ,  H04W16/14 ,  H04L27/26 ,  H04W74/08 ,  H04L5/00

Abstract: A base station of a wireless communication system is disclosed. The base station comprise a communication module; and a processor. The processor is configured to transmit a radio frame divided into a plurality of subframes by using the communication module, wherein a duration of each of the plurality of subframes is 1 ms. When the base station transmits a partial subframe having a duration shorter than the duration of each of the plurality of subframes, the processor starts to transmit a control channel for scheduling data transmitted through the partial subframe at a symbol position for transmitting a reference signal.

公开(公告)号：US10667292B2

公开(公告)日：2020-05-26

申请号：US15523673

申请日：2015-11-02

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Yongho Kim ,  Jinsam Kwak ,  Juhyung Son

IPC: H04W74/00 ,  H04W72/04 ,  H04W52/02 ,  H04W84/12 ,  H04L5/00 ,  H04W74/08

Abstract: The present invention relates to a wireless communication method for power saving and a wireless communication terminal using the same, and more particularly, to a wireless communication method for efficiently operating data transmission/reception of each terminal in a high-density environment and a wireless communication terminal using the same.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 traffic indicator map (TIM) including identifier information of at least one station which is to receive downlink data, transmit a trigger frame triggering a PS-Poll transmission of the at least one station indicated by the TIM, receive at least one PS-Poll transmitted in response to the trigger frame, and transmit downlink data to a station that transmitted the PS-Poll and a wireless communication method using the same.

公开(公告)号：US10666405B2

公开(公告)日：2020-05-26

申请号：US15719547

申请日：2017-09-29

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

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：US20200163129A1

公开(公告)日：2020-05-21

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.