公开(公告)号：US20200322974A1

公开(公告)日：2020-10-08

申请号：US16904556

申请日：2020-06-18

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok NOH ,  Jinsam KWAK ,  Juhyung SON

IPC: H04W72/12 ,  H04L5/00 ,  H04L27/26 ,  H04L5/14 ,  H04W84/12 ,  H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04W88/06

Abstract: Disclosed are a method, an apparatus, and a system for performing channel access. In detail, provided are a method including: receiving uplink scheduling information; and when the user equipment has stopped an uplink transmission during the uplink transmission being performed according to the uplink scheduling information, to resume the uplink transmission, performing a second type channel access when a channel sensed by the user equipment is continuously idle after the uplink transmission has been stopped, and performing a first type channel access when the channel sensed by the user equipment is not continuously idle after the uplink transmission has been stopped, wherein the first type channel access comprises performing a random backoff after a channel sensing, and the second type channel access only comprises performing a channel sensing and an apparatus and a system therefor.

公开(公告)号：US20190098658A1

公开(公告)日：2019-03-28

申请号：US16138936

申请日：2018-09-21

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok NOH ,  Jinsam KWAK ,  Juhyung SON

IPC: H04W72/14 ,  H04W74/08 ,  H04W72/04 ,  H04W16/14 ,  H04L1/18 ,  H04L5/00

Abstract: The present invention relates to a method for performing uplink transmission to a base station through an unlicensed cell in a wireless communication system. In particular, the invention provides a method including: receiving, from the base station, an uplink grant scheduling the uplink transmission on one or more subframes; and performing the uplink transmission on the one or more subframes using one of a first type channel access or a second type channel access indicated in the uplink grant, wherein a parameter for the first type channel access is determined according to a priority included in the uplink grant, and wherein when the uplink grant indicates the second type channel access, the priority is a priority used in a downlink channel access of the base station.

公开(公告)号：US20180160447A1

公开(公告)日：2018-06-07

申请号：US15872978

申请日：2018-01-16

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok NOH ,  Jinsam Kwak ,  Juhyung Son

IPC: H04W74/00 ,  H04W74/08 ,  H04W16/14 ,  H04L1/18 ,  H04L12/807 ,  H04W76/28

CPC classification number: H04W74/004 ,  H04L1/1812 ,  H04L1/1825 ,  H04L1/187 ,  H04L5/0055 ,  H04L47/27 ,  H04W16/14 ,  H04W72/042 ,  H04W74/08 ,  H04W74/0808 ,  H04W74/0866 ,  H04W76/27 ,  H04W76/28 ,  H04W88/08

Abstract: Disclosed are a method, an apparatus, and a system for adjusting a contention window size for performing channel access. In detail, the method includes: receiving a plurality of hybrid automatic repeat request acknowledgement (HARQ-ACK) responses for downlink channel(s) of the specific cell; generating a random number N (N≥0) in a contention window size; and performing the downlink transmission in the specific cell after standing by for N slots while the specific cell is idle, wherein when a ratio of negative acknowledgement (NACK) among the plurality of HARQ-ACK responses is equal to or more than a reference value, the contention window size becomes larger than a previous value, and when the ratio of the NACK among the plurality of HARQ-ACK responses is less than the reference value, the contention window size is reset to a minimum value.

公开(公告)号：US20170171883A1

公开(公告)日：2017-06-15

申请号：US15444239

申请日：2017-02-27

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok NOH ,  Jinsam KWAK ,  Juhyung SON

IPC: H04W74/00 ,  H04L12/807 ,  H04W16/14 ,  H04L1/18 ,  H04W74/08 ,  H04W76/04

CPC classification number: H04W74/004 ,  H04L1/18 ,  H04L1/1812 ,  H04L5/0055 ,  H04L47/27 ,  H04W16/14 ,  H04W72/042 ,  H04W74/08 ,  H04W74/0808 ,  H04W74/0866 ,  H04W76/27 ,  H04W76/28 ,  H04W88/08

Abstract: Disclosed are a method, an apparatus, and a system for adjusting a contention window size for performing channel access. In detail, the method includes: receiving a plurality of hybrid automatic repeat request acknowledgement (HARQ-ACK) responses for downlink channel(s) of the specific cell; generating a random number N (N≧0) in a contention window size; and performing the downlink transmission in the specific cell after standing by for N slots while the specific cell is idle, wherein when a ratio of negative acknowledgement (NACK) among the plurality of HARQ-ACK responses is equal to or more than a reference value, the contention window size becomes larger than a previous value, and when the ratio of the NACK among the plurality of HARQ-ACK responses is less than the reference value, the contention window size is reset to a minimum value.

公开(公告)号：US20250097924A1

公开(公告)日：2025-03-20

申请号：US18964350

申请日：2024-11-30

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok NOH ,  Kyungjun CHOI ,  Jinsam KWAK

IPC: H04W72/0453 ,  H04W16/14 ,  H04W72/23 ,  H04W72/56

Abstract: Disclosed is a base station of a wireless communication system. Each base station for wireless communication comprises: a communication module; and a processor. The processor can receive signaling about a bandwidth part (BWP) from the base station, determine, on the basis of the signaling, an activated BWP among one or more BWPs set in an unlicensed band, and monitor a physical downlink control channel (PDCCH) in the activated BWP.

公开(公告)号：US20250089049A1

公开(公告)日：2025-03-13

申请号：US18957480

申请日：2024-11-22

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Kyungjun CHOI ,  Minseok NOH ,  Jinsam KWAK

IPC: H04W72/1273 ,  H04L1/1812 ,  H04L5/00 ,  H04W24/08 ,  H04W72/21

Abstract: The present invention relates to a method, device, and system for downlink data reception and HARQ-ACK transmission in a wireless communication system. According to the present invention, in the method, device, and system for downlink data reception and HARQ-ACK transmission, a first physical downlink control channel (PDCCH) for scheduling of a first physical downlink shared channel (PDSCH) is received, and a second PDCCH for scheduling of a second PDSCH is received. Thereafter, uplink control information (UCI) including a hybrid automatic repeat request (HARQ)-acknowledge (ACK) codebook for the first PDSCH and the second PDSCH is transmitted to a base station.

公开(公告)号：US20240422037A1

公开(公告)日：2024-12-19

申请号：US18807878

申请日：2024-08-16

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok NOH ,  Jinsam KWAK ,  Kyungjun CHOI ,  Hyukmin SON

IPC: H04L27/26 ,  H04B7/08 ,  H04L1/1812 ,  H04L5/00 ,  H04L5/10 ,  H04W72/1268 ,  H04W72/21

Abstract: A UE in a wireless communication system is disclosed. The UE includes a communication module and a processor for controlling the communication module. The processor determines a first cyclic shift (CS) value based on hybrid automatic repeat request acknowledgment (HARQ-ACK) information representing a response to a downlink channel having been received from a base station, determines a CS offset based on request information representing a request to be transmitted from the UE to the base station, determines a second CS value representing a degree of cyclic-shifting a base sequence to be used in a physical uplink control channel (PUCCH) based on the first CS value and the CS offset, and transmits the PUCCH for simultaneous transmission of the request information and the HARQ-ACK information using a sequence generated by cyclic-shifting the base sequence based on the second CS value.

公开(公告)号：US20240407004A1

公开(公告)日：2024-12-05

申请号：US18803422

申请日：2024-08-13

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok NOH ,  Geunyoung SEOK ,  Juhyung SON ,  Jinsam KWAK

IPC: H04W74/0816 ,  H04W74/08 ,  H04W74/0833

Abstract: The present invention relates to a wireless communication system and, more specifically, to a method and a wireless device therefor, the method comprising the steps of: successfully accessing channels in one or more sensing beams before a channel occupancy (CO) starts, each sensing beam covering one or more transmission beams in the CO; and, after transmission using a first transmission beam in the CO, performing a channel access procedure on a sensing beam corresponding to a second transmission beam in order to perform transmission using the second transmission beam in the CO.

公开(公告)号：US20240324007A1

公开(公告)日：2024-09-26

申请号：US18648337

申请日：2024-04-27

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok NOH ,  Jinsam KWAK ,  Juhyung SON

IPC: H04W74/0808 ,  H04L5/00 ,  H04W74/00 ,  H04W76/11

CPC classification number: H04W74/0808 ,  H04L5/0082 ,  H04W74/006 ,  H04W76/11

Abstract: A user equipment of a wireless communication system is disclosed. The user equipment includes a communication module, and a processor. The processor is configured to perform a first type channel access, which is a channel access based on a random backoff, for an autonomous uplink (AUL) transmission when a predetermined condition is not satisfied, perform a second type channel access, in which channel sensing for a predetermined single time interval without backoff, for the AUL transmission when the predetermined condition is satisfied, and perform the AUL transmission based on a result of the first type channel access or a result of the second type channel access. The AUL transmission is performed by the user equipment without an uplink (UL) grant received from a base station.

公开(公告)号：US20240314797A1

公开(公告)日：2024-09-19

申请号：US18679315

申请日：2024-05-30

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok NOH ,  Kyungjun CHOI ,  Jinsam KWAK

IPC: H04W72/23 ,  H04W72/21 ,  H04W72/53 ,  H04W72/56 ,  H04W74/0808 ,  H04W74/0833

CPC classification number: H04W72/23 ,  H04W72/21 ,  H04W72/53 ,  H04W72/56 ,  H04W74/0808 ,  H04W74/0833

Abstract: A method for receiving downlink transmission by a terminal comprises the steps of: performing uplink transmission, which is related to channel occupancy shared between a base station and the terminal, to the base station; and receiving, from the base station, downlink transmission performed after a gap from a time point at which the base station has received the uplink transmission, wherein the downlink transmission is performed on the basis of channel access performed by the base station, the channel access is performed on the basis of the gap, and information included in the downlink transmission and a resource through which the downlink transmission is performed are determined on the basis of whether the base station has configured, for the terminal, a threshold value of energy detection for the channel occupancy.