公开(公告)号：US20220346093A1

公开(公告)日：2022-10-27

申请号：US17857175

申请日：2022-07-05

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Kyungjun CHOI ,  Minseok Noh ,  Jinsam Kwak

IPC: H04W72/04 ,  H04L5/00 ,  H04W74/08

Abstract: The present invention relates to a transmission and reception method of a radio signal by a terminal in a wireless communication system. According to the present specification, disclosed is a method comprising the steps of: determining whether or not transmission of an uplink radio signal or reception of a downlink radio signal allocated to a terminal is possible on a slot configured to comprise at least one of one or more downlink symbols for downlink transmission, one or more flexible symbols and one or more uplink symbols for uplink transmission; and controlling the transmission of the uplink radio signal or the reception of the downlink radio signal on the basis of the determination. According to the present invention, the terminal can transmit the uplink radio signal even if the configuration of the slot is changed, and thus uplink radio signal transmission omission or unnecessary retransmission of the uplink radio signal can be prevented. And by means of defining valid timing of the uplink signal such as a physical random access channel, the frequency efficiency of the network can be increased and the energy consumption of the terminal can be reduced.

公开(公告)号：US11464035B2

公开(公告)日：2022-10-04

申请号：US17514157

申请日：2021-10-29

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Kyungjun Choi ,  Minseok Noh ,  Jinsam Kwak

IPC: H04W72/12 ,  H04W72/04

Abstract: In a method for transmitting and receiving a shared channel in a wireless communication system, the method performed by a terminal is characterized by comprising: a step for receiving, from a base station, first resource information for transmitting and receiving a shared channel; and a step for receiving, from the base station, the shared channel on a first resource determined on the basis of the first resource information or transmitting, to the base station, the shared channel on the first resource.

公开(公告)号：US11381369B2

公开(公告)日：2022-07-05

申请号：US16714596

申请日：2019-12-13

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Kyungjun Choi ,  Minseok Noh ,  Jinsam Kwak

IPC: H04L5/00 ,  H04W24/08 ,  H04W76/27

Abstract: A base station of a wireless communication system is disclosed. The base station of the wireless communication includes a communication module, and a processor. The processor generates a preemption indicator indicating a preempted resource. In this case, the resource indicated by the preemption indicator does not include an orthogonal frequency divisional multiplexing (OFDM) symbol configured as an uplink (UL) symbol by a radio resource control (RRC) signal. The processor is configured to transmit the preemption indicator to a user equipment of the wireless system based on a predetermined period.

公开(公告)号：US20220124698A1

公开(公告)日：2022-04-21

申请号：US17489729

申请日：2021-09-29

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok Noh ,  Kyungjun Choi ,  Jinsam Kwak

IPC: H04W72/04 ,  H04W72/10 ,  H04W72/12 ,  H04W74/08 ,  H04L1/16

Abstract: The present invention provides: a resource allocation method for uplink transmission onto an unlicensed band in a wireless communication system, particularly, in cellular wireless communication system; and a method, a device, and a system for transmitting scheduling information in a base station and for performing reception and transmission in a terminal. In addition, provided are: a method for efficiently transmitting a signal in a wireless communication system, particularly, in a cellular wireless communication system; and a device therefor, and another objective of the present invention is to provide: a method for efficiently sensing a channel and transmitting a signal/channel in a specific frequency band (for example, unlicensed band); a method for receiving the corresponding signal/channel; and a device therefor.

公开(公告)号：US20210058962A1

公开(公告)日：2021-02-25

申请号：US17015055

申请日：2020-09-08

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok Noh ,  Jinsam Kwak ,  Juhyung Son

IPC: H04W72/14 ,  H04L27/26 ,  H04W74/00 ,  H04L5/00 ,  H04L1/18 ,  H04W16/14 ,  H04W72/04 ,  H04W74/08

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：US10805950B2

公开(公告)日：2020-10-13

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 ,  H04L27/26 ,  H04W74/00 ,  H04L5/00 ,  H04L1/18 ,  H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04W84/12

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：US10728919B2

公开(公告)日：2020-07-28

申请号：US16255187

申请日：2019-01-23

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok Noh ,  Jinsam Kwak ,  Juhyung Son

IPC: H04L12/28 ,  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：US20200214006A1

公开(公告)日：2020-07-02

申请号：US16814856

申请日：2020-03-10

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Kyungjun CHOI ,  Minseok Noh ,  Jinsam Kwak

IPC: H04W72/04 ,  H04W74/08 ,  H04L5/00

Abstract: The present invention relates to a transmission and reception method of a radio signal by a terminal in a wireless communication system. According to the present specification, disclosed is a method comprising the steps of: determining whether or not transmission of an uplink radio signal or reception of a downlink radio signal allocated to a terminal is possible on a slot configured to comprise at least one of one or more downlink symbols for downlink transmission, one or more flexible symbols and one or more uplink symbols for uplink transmission; and controlling the transmission of the uplink radio signal or the reception of the downlink radio signal on the basis of the determination. According to the present invention, the terminal can transmit the uplink radio signal even if the configuration of the slot is changed, and thus uplink radio signal transmission omission or unnecessary retransmission of the uplink radio signal can be prevented. And by means of defining valid timing of the uplink signal such as a physical random access channel, the frequency efficiency of the network can be increased and the energy consumption of the terminal can be reduced.

公开(公告)号：US20200015094A1

公开(公告)日：2020-01-09

申请号：US16578246

申请日：2019-09-20

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Minseok Noh ,  Jinsam Kwak ,  Juhyung Son

IPC: H04W16/14 ,  H04W72/04 ,  H04W72/14 ,  H04W74/08

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 transmit a radio frame divided into a plurality of subframes through the communication module, and perform a UL transmission in a partial subframe having a duration shorter than one subframe duration to the base station based on at least one of an indication of a base station and a result of a channel access of the wireless communication system.

公开(公告)号：US10433181B2

公开(公告)日：2019-10-01

申请号：US16041721

申请日：2018-07-20

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Jinsam Kwak ,  Juhyung Son ,  Geonjung Ko ,  Minseok Noh

IPC: H04W16/14 ,  H04W74/08 ,  H04L5/00 ,  H04L27/26 ,  H04W84/04

Abstract: Disclosed relates to a method, device, and system for performing downlink transmission. Specifically, the disclosed relates to a method including when the downlink signal includes a physical downlink shared channel (PDSCH) and a channel in the specific cell is sensed to be idle for a first predefined interval, wherein the processor performs backoff after the second predefined time in order to perform the downlink transmission, and when the downlink transmission includes a Discovery Reference Signal (DRS) and the channel in the specific cell is sensed to be idle for a second predefined interval, performing the downlink transmission immediately after the second predefined interval, and a device and system therefor.