公开(公告)号：US20220109637A1

公开(公告)日：2022-04-07

申请号：US17551195

申请日：2021-12-15

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：US20220104067A1

公开(公告)日：2022-03-31

申请号：US17549869

申请日：2021-12-14

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

Inventor： Woojin AHN ,  Juhyung SON ,  Jinsam KWAK ,  Geonjung KO

IPC: H04W28/04 ,  H04W28/06 ,  H04L1/16 ,  H04L1/18 ,  H04W28/02 ,  H04W80/02

Abstract: Provided is a wireless communication terminal that communicates wirelessly. The terminal includes: a transceiver; and a processor. The processor is configured to transmit first information on a fragmentation level to be used for data to be transmitted to a recipient by using the transceiver in an add Block ACK (ADDBA) setup procedure.

公开(公告)号：US20210392365A1

公开(公告)日：2021-12-16

申请号：US17460117

申请日：2021-08-27

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: A video signal decoding device comprising a processor, wherein the processor is configured to: obtain reference samples corresponding to a first side of a current block and reference samples corresponding to a second side of the current block, obtain a direct current (DC) value for prediction of the current block based on a reference sample set comprising at least some of the reference samples corresponding to the first side and the reference samples corresponding to the second side, and reconstruct the current block based on the DC value.

公开(公告)号：US20210385876A1

公开(公告)日：2021-12-09

申请号：US17412219

申请日：2021-08-25

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

Inventor： Woojin AHN ,  Yongho KIM ,  Jinsam KWAK ,  Juhyung SON

IPC: H04W74/08 ,  H04W84/12 ,  H04W52/02 ,  H04W28/02 ,  H04W72/04

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 receives, through the transceiver, a trigger frame transmitted by a base wireless communication terminal, and performs a multi-user uplink transmission based on the received trigger frame, wherein the trigger frame includes a predetermined field indicating whether an additional trigger frame is present or not, and a wireless communication method using the same.

公开(公告)号：US20210352761A1

公开(公告)日：2021-11-11

申请号：US17383479

申请日：2021-07-23

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

Inventor： Woojin AHN ,  Juhyung SON ,  Geonjung KO ,  Jinsam KWAK

IPC: H04W80/02 ,  H04W74/00 ,  H04W84/12 ,  H04W74/08 ,  H04L5/00 ,  H04W28/02 ,  H04W40/24 ,  H04W72/04

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.

公开(公告)号：US20210289197A1

公开(公告)日：2021-09-16

申请号：US17333887

申请日：2021-05-28

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

Inventor： Geonjung KO ,  Dongcheol KIM ,  Juhyung SON ,  Jaehong JUNG ,  Jinsam KWAK

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/46 ,  H04N19/82 ,  H04N19/176

Abstract: A video signal processing method comprises: a step for deriving an intra prediction mode of a current block; a step for constructing a reference sample around the current block; a step for generating a prediction sample of the current block by using the reference sample on the basis of the intra prediction mode; and a step for restoring the current block on the basis of the prediction sample. The step for generating the prediction sample may comprise: a step for setting a filter flag value which specifies a filter coefficient of an interpolation filter applied to the reference sample on the basis of the width and height of the current block; and a step for performing filtering on the reference sample by using the interpolation filter having the filter coefficient specified by the filter flag.

公开(公告)号：US20210274548A1

公开(公告)日：2021-09-02

申请号：US17321435

申请日：2021-05-15

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

Inventor： Jinsoo AHN ,  Yongho KIM ,  Jinsam KWAK ,  Juhyung SON

IPC: H04W74/08 ,  H04W84/12 ,  H04W72/04

Abstract: Provided is a wireless communication terminal. The wireless communication terminal includes a transceiver and a processor. The processor performs a contention procedure based on a back-off counter, in each of a plurality of channel and accesses, by using the transceiver, at least one of the plurality of channels based on the contention procedure.

公开(公告)号：US20210266583A1

公开(公告)日：2021-08-26

申请号：US17314373

申请日：2021-05-07

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

Inventor： Jaehong JUNG ,  Dongcheol KIM ,  Geonjung KO ,  Juhyung SON ,  Jinsam KWAK

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176

Abstract: Disclosed is a video signal processing method comprising the steps of: acquiring a merge index which indicates a candidate for prediction of a current block among a plurality of candidates for the prediction of the current block, which are included in a merge candidate list; acquiring motion information of the current block on the basis of motion information corresponding to the candidate indicated by the merge index; when the motion information of the current block includes a plurality of motion vectors corresponding to a list of different reference pictures, comparing picture order count (POC) differences between each of the reference pictures corresponding to the plurality of motion vectors and the current picture including the current block; correcting the plurality of motion vectors on the basis of a result of the comparison; and reconstructing the current block on the basis of the plurality of corrected motion vectors.

公开(公告)号：US20210250622A1

公开(公告)日：2021-08-12

申请号：US17244083

申请日：2021-04-29

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

Inventor： Jaehong JUNG ,  Juhyung SON ,  Dongcheol KIM ,  Geonjung KO ,  Jinsam KWAK

IPC: H04N19/96 ,  H04N19/70 ,  H04N19/184 ,  H04N19/176

Abstract: A video signal processing method comprises: obtaining, from a bitstream, a skip parameter (cu_skip_flag) indicating whether a skip mode is applied to a current block; when the skip parameter indicates that a mode is not the skip mode, obtaining, from the bitstream, a merge parameter (merge_flag) indicating whether the current block is coded with a merge mode; and determining whether a coded block flag (CBF) parameter (cu_cbf), which indicates whether a syntax element related to transform is obtained from the bitstream, is obtained, according to a value of the merge parameter, wherein, when the value of the merge parameter indicates the merge mode, the CBF parameter is not obtained from the bitstream and is determined to be a preconfigured value.

公开(公告)号：US20210234741A1

公开(公告)日：2021-07-29

申请号：US17232147

申请日：2021-04-16

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

Inventor： Juhyung SON ,  Jinsam KWAK ,  Geonjung KO

IPC: H04L27/26 ,  H04L1/00 ,  H04L5/00 ,  H04W72/04

Abstract: A wireless communication terminal is disclosed. 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 obtains a signaling field from a physical frame including data to be transmitted from a base wireless communication terminal to each of a plurality of wireless communication terminals including the wireless communication terminal, and receives, from the physical frame based on the signaling field, the data having been transmitted from the base wireless communication terminal to the wireless communication terminal. The signaling field signals information about the plurality of wireless communication terminals. The base wireless communication terminal is any one wireless communication terminal different from the plurality of wireless communication terminals.